CN110240077A - A kind of engineering survey at the uniform velocity hoist engine and application method - Google Patents

Abstract

The invention discloses a kind of engineering survey at the uniform velocity hoist engines and application method, under hoist engine unwrapping wire and take-up operating condition, the change procedure for reducing with outside barrel diameter and increasing, pass through dead block runner radius, motor runner radius is adjusted by certain functional relation, the even level of hoist engine unwrapping wire and take-up speed is improved, realizes the at the uniform velocity measurement of engineering distribution formula monitoring.The at the uniform velocity hoist engine can be reduced measurement error, improve computational accuracy, to improve the precision of measurement result.

Description

A uniform speed hoist for engineering measurement and using method

technical field

The invention relates to the field of winches, in particular to a constant-speed winch for engineering measurement requiring relatively stable or constant speed and a method of using the same.

Background technique

In the distributed monitoring of dam deformation, it is necessary to determine the position of the measurement carrier, and some also need to calculate the dam deformation value by measuring the velocity value. The interference principle can measure the Sagnac phase shift change, and after conversion, the value of the rotational speed Ω is obtained, which is proportional to the panel deflection or the dam settlement under the uniform motion of the fiber optic gyroscope, and the measured value is obtained. Of course, speed or position information can also be obtained by tachometer or displacement meter, but such devices are often realized by friction between various rotors, wheels or gears and the measurement track. If the rotor or wheel slips, it will cause measurement errors. The existing encoder technology can also obtain position information, but the time corresponding to each position needs to be recorded, which is often inconvenient when measuring in the field.

In actual measurement, the hoist is often regarded as moving at a constant speed, and a speed value is given to calculate the position and measurement value, but the hoist traction line will change the outer diameter of the reel during the retracting and unwinding process. In the case of , the speed of the traction line is also changing, so that the calculation result of the position is wrong, and the measured value obtained by using the speed value is also wrong, and its error value will have a cumulative effect, which is far from satisfying the precision measurement. requirements.

SUMMARY OF THE INVENTION

The first object of the present invention is to provide a uniform hoist for engineering measurement, in which a hoist bracket, a motor, a bobbin, a belt, a protective cover, a small power motor, a small belt, a belt adjuster, a small belt row are arranged in the uniform hoist The combination of rope device, small power motor, small belt and small belt rope arranger is used to solve the problem that the diameter of the drum of the ordinary winch changes with the pay-off and take-up of the winch, resulting in the uneven speed of pay-off and take-up.

The second object of the present invention is to provide a method of using a constant-speed hoist for engineering measurement, which can make the components of the constant-speed hoist work in harmony according to design requirements, and improve the uniformity of the pay-off and take-up speeds of the hoist, Provide more accurate uniform velocity for measurement, reduce measurement error, improve calculation accuracy, and ultimately improve the accuracy of measurement results.

The first object of the present invention is achieved in this way:

A uniform speed winch for engineering measurement is characterized in that: a winch bracket, a motor, a bobbin, a belt, a protective cover, a small power motor, a small belt, a belt adjuster, a small belt rope arranger, a motor, The small belt rope arranging device, the low-power motor, the belt adjuster, and the spool are sequentially fixed on the hoist bracket; one end of the motor is provided with a motor runner, the spool is parallel to the motor runner, and the spool is along one end of the motor runner. Placed, the end of the spool close to the motor runner is provided with a spool runner, the motor runner and the spool runner are connected by a closed-loop belt, between the motor runner and the spool runner, and close to the motor runner. There is a low-power motor on the side, and the low-power motor runner is connected to the motor runner through a small belt of a single line; the centers of the runners of the motor, the low-power motor and the spool are on the same straight line, and the low-power motor runner passes through the single-line. The small belt is connected with the motor runner; the small belt rotates smoothly between the motor runner and the low-power motor runner through the guidance of the small belt rope arrangement;

The belt adjuster is fixed on the hoist bracket through the adjuster support, and is located between the low-power motor runner and the spool runner, close to the side of the spool runner, and a protective cover is provided on the runner side of the constant-speed hoist; One end of the belt is fixed in the low-power motor runner, and the other end of the small belt is fixed in the motor runner. The small belt is wound from the bottom of the motor runner to the rope guide of the small-belt rope arrangement, and then wound to the low-power the top of the motor runner;

The belt adjuster is provided with an adjuster support, a horizontal axis of the adjuster, a pulley of the adjuster, an outer frame of the pulley of the adjuster, and hooks are arranged at the bottoms of both ends of the support of the adjuster;

The belt is limited by the outer frame of the adjuster pulley, and the belt is close to the adjuster pulley and passes through the belt adjuster; The pulley is fixed on the adjuster support, and the horizontal axis of the adjuster also functions as a bolt;

There is an adjusting slideway between the two sides of the adjuster support, and the width of the adjusting slideway is the same as the outer diameter of the horizontal shaft of the adjuster; the lower part of the adjusting slideway is provided with an arc type larger than the external diameter of the horizontal shaft of the adjuster A spring hook is installed just below the arc-shaped hole, the width of the adjusting slide is the same as the outer diameter of the spring hook, and the two ends of the spring hook are respectively connected with the hook and the horizontal axis of the adjuster;

The spring hook expands and contracts according to the magnitude of the force, and at the same time, the horizontal axis of the adjuster slides up and down smoothly in the adjustment slideway, so that the belt keeps a compact rotating state.

When the motor runner is the factory diameter D ₁ , the spool has been wound with the power line, and the diameter of the spool is D' at this time _; The size relationship is

The relationship between the measurement length S and the adjustment length s of the small belt, the inner width L of the bobbin, the inner width b of the motor runner, the radius R of the power line, and the radius r of the small belt are:

The diameter D ₁ of the motor runner is a multiple of the diameter d of the low-power motor runner, take D ₁ =2d; the measurement length S refers to the allowable measurement range of the uniform speed hoist, which requires S≤450m, corresponding to the adjustment length of the small belt s≤ 50m.

When the low-power motor is not energized, the runner of the low-power motor can rotate freely in the clockwise or counterclockwise direction; after the low-power motor is energized, the runner of the low-power motor rotates to the spool runner side with variable frequency speed change; The pulling force of the motor ranges from 0.008 to 0.015KN.

The inner width of the motor runner is the same as the inner width of the low-power motor runner. Under the intelligent adjustment of the small belt rope arrangement, the small belt is retracted or placed in the motor runner for one turn, and the low-power motor runner is released or released accordingly. Retract two turns so that the small belts are neatly arranged in the motor runner and the low-power motor runner.

The small belt is a single line, the cross section of the small belt is circular and the length is greater than the adjustment length s, the small belt is wound on the low-power motor wheel before each measurement.

The spool is paid out clockwise, the low-power motor does not work, the small belt wraps around the main shaft of the motor under the traction of the motor, and is neatly arranged in the motor runner through the small belt rope puller; the spool is taken up counterclockwise. , The low-power motor works synchronously and rotates clockwise. With the assistance of the small-belt rope arrangement, the low-power motor neatly retracts the small belt from the motor runner to the low-power motor runner.

When the spool measures the pay-off, the force of the belt on the horizontal axis of the adjuster increases, so that the horizontal axis of the adjuster moves up slowly along the adjustment slide; The horizontal axis of the device moves slowly downward toward the adjustment slideway.

When the horizontal axis of the adjuster is at the top of the adjusting slide, the diameter of the motor wheel is D ₁ '; when the horizontal axis of the adjuster is at the bottom of the adjusting slide, the diameter of the motor wheel is D ₁ ; when the belt adjuster is working, the diameter of the adjuster is D 1 . The outer frame of the pulley allows the belt to rotate against the adjuster pulley.

The length of the adjustment slide is k(D ₁ '-D ₁ ), and each constant speed winch has a fixed constant k value.

Preferably, the small belt is wound to the bottom of the low-power motor runner through the rope guide, and the low-power motor runner can rotate freely in the clockwise or counterclockwise direction when it is not energized.

The second object of the present invention is achieved as follows:

A method of using a constant-speed hoist for engineering measurement, characterized in that it comprises the following steps:

A. Fix the head of the small linear belt in the low-power motor runner, then wrap the small belt neatly into the low-power motor runner, and finally fix the tail of the small belt in the motor runner to adjust the low-power The motor runner makes the small belt tightly connect the low-power motor runner and the motor runner;

B. Make the oval belt pass through the outer frame of the adjuster pulley, close to the adjuster pulley, and then install the belt adjuster on the winch bracket; then connect the motor wheel and the spool wheel with the belt;

C. After the constant speed winch is connected, turn the third gear switch to the reverse gear, so that the power line is neatly wound into the spool, then connect the measuring instrument with the head of the power line, and place the measuring instrument on the measuring track to prepare for measurement ;

D. Set the third gear switch to the positive gear, and the spool will pay out clockwise under the driving of the motor, and the small belt will circle along the main shaft of the motor under the traction of the motor, so that the inner diameter of the motor runner will increase. When the measuring instrument reaches the end of the measurement , put the third gear switch to the middle gear, stop the measurement;

E. Set the third gear switch to the reverse gear, the motor drives the spool to take up the thread counterclockwise, so that the measuring instrument returns to the starting measurement point from the end point. Decrease, when the measuring instrument reaches the starting point of measurement, put the third gear switch to the middle gear and stop the measurement.

Compared with the prior art, the above technical solutions proposed by the present invention have the following advantages:

1. By functionalizing the diameter of the motor runner and the diameter of the bobbin before and after the measurement in the hoist, the adjustment length of the small belt and the width of the reel, the width of the motor runner, the radius of the power line, and the radius of the small belt can be functionalized. The dimensions of the parts should correspond to each other;

2. The length of the adjustment slideway in the belt adjuster is preset, which is proportional to the change of the diameter of the motor runner before and after the measurement, so that the horizontal axis of the adjuster slides within the range of the adjustment slideway to adjust the tightness of the belt and make the hoist at a constant speed. smooth rotation;

3. The structure of the invention is simple and convenient. By fixing the radius of the reel runner, the inner diameter of the motor runner is adjusted according to a certain function relationship, so as to improve the uniform level of the pay-off and take-up speeds of the hoist, provide a more accurate uniform speed for measurement, and realize distributed engineering. Monitored uniform measurements.

In a word, the constant speed winch can reduce the measurement error and improve the calculation accuracy, thereby improving the accuracy of the measurement result.

Description of drawings

Figure 1 is a schematic diagram of the structure of a constant speed hoist.

Figure 2 is a structural diagram of the connection between the runner and each belt of the constant speed hoist.

Figure 3 Schematic diagram of each belt winding method of the uniform hoist.

Figure 4 is a front view of the structure of the belt adjuster.

Figure 5 is a side view of the structure of the belt adjuster.

Figure 6 Adjuster pulley frame.

Figure 7 is a diagram of the layout of the preset measurement track on the surface to be measured.

Figure 8. The layout of the monitoring system on the surface of the measured building with a slope.

Figure 9. Cross-sectional view of the gauge running on the surface being measured.

Figure 10 is a schematic diagram of the layout of the internal preset measurement track under test.

Figure 11 Layout of the monitoring system inside the measured building with a slope.

Figure 12 Layout of the monitoring system inside the low-slope measured building.

Figure 13 is a structural diagram of the measuring instrument inside the building to be measured.

Figure 14 is a schematic diagram of the structure of the hand-cranked reel;

In the figure: constant speed winch 1, constant speed winch bracket 2, motor 3, motor 30, motor wheel 31, motor spindle 32, spool 4, spool wheel 40, spool spindle 41, belt 5, protective cover 6, small Power motor 7, small power motor runner 70, small belt 8, belt adjuster 9, adjuster support 90, adjuster horizontal shaft 91, adjuster slideway 92, adjuster pulley 93, adjuster pulley frame 94, spring Hook 95, hook 96, arc hole 97, small belt rope arrangement 10, rope guide 11, power line 12, dam 13, measuring track 14, measuring instrument 15, hand drum 16, three-speed switch 17 .

Detailed ways

The present invention will be further described below in conjunction with the embodiments and with reference to the accompanying drawings.

A uniform speed winch for engineering measurement, as shown in Figure 1 and Figure 2, is provided with a winch bracket 2, a motor 3, a bobbin 4, a belt 5, a protective cover 6, a small power motor 7, and a small belt 8 in the uniform speed winch 1. , belt adjuster 9, small belt rope arranging device 10; motor 3, small belt rope arranging device 10, low power motor 7, belt adjuster 9, bobbin 4 are sequentially fixed on the hoist bracket 2; in the motor 3 of the motor 30 One end is provided with a motor runner 31; the spool 4 is placed in parallel with the motor runner 64 and the spool 7 is placed along one end of the motor runner 64, on the spool 4, one end close to the motor runner 31 is provided with a spool runner 40 , the motor runner 31 and the spool runner 40 are connected by a closed-loop belt 5, between the motor runner 31 and the spool runner 40, close to the motor runner 31 side is provided with a low-power motor 7, the low-power motor runner 70 is connected to the motor runner 31 through a single-line small belt 8 .

The centers of the runners of the motor 3, the low-power motor 7 and the bobbin 4 are on the same straight line, and the low-power motor runner 70 is connected to the motor runner 31 through a single-line small belt 8; The small belt 8 is smoothly rotated between the motor runner 31 and the low-power motor runner 70 .

As shown in FIG. 1 , the belt adjuster 9 is fixed on the hoist bracket 2 through the adjuster support 90, and is located between the low-power motor runner 70 and the spool runner 40 near the spool runner 40 side, the uniform speed hoist 1 A protective cover 6 is provided on the side of the runner.

As shown in FIG. 3 , one end of the small belt 8 is fixed in the low-power motor runner 70 , and the other end of the small belt 8 is fixed in the motor runner 31 , and the small belt is wound from the bottom of the motor runner 31 to the small belt. The small belt 8 can also be wound to the bottom of the low-power motor runner 70 through the rope guide 11 . The low-power motor runner 70 can freely rotate clockwise or counterclockwise when it is not energized, and rotate to the side of the spool runner 40 after energization, and the frequency can be changed;

The motor 3, the low-power motor 7 and the small belt rope arrangement 10 share a third-gear switch 17, and the third-gear is respectively positive, middle, and reverse; when the third-gear switch 17 is set to The motor runner 70 is not energized, and can rotate freely in the clockwise or counterclockwise direction; when the third gear switch 17 is set to the middle gear, the circuit is in a power-off state; when the third gear switch 17 is set to the reverse gear, the motor 3 rotates counterclockwise, The low-power motor 7 is energized and rotates counterclockwise with variable frequency and variable speed; the pulling force of the low-power motor 7 ranges from 0.008 to 0.015KN.

As shown in FIG. 4 , the belt adjuster 9 is provided with an adjuster support 90 , the adjuster horizontal shaft 91 , the adjuster pulley 93 , and the adjuster pulley outer frame 94 ; 96.

As shown in FIG. 5 , the adjuster support 90 of the belt adjuster 9 is fixed on the hoist bracket 2 , the belt 5 is limited by the adjuster pulley frame 94 , and the belt 5 is close to the adjuster pulley 93 and passes through the belt adjuster 9 The adjuster horizontal axis 91 passes through the round hole of the adjuster pulley outer frame 94 and the adjuster pulley 93, so that the adjuster pulley frame 94 and the adjuster pulley 93 are fixed on the adjuster support 90, and the adjuster horizontal axis 91 is also Has the function of bolts;

The middle of the two sides of the adjuster support 90 is provided with an adjusting slideway 92, and the width of the adjusting slideway 92 is the same as the outer diameter of the adjuster horizontal shaft 91; A large arc-shaped hole 97; a spring hook 95 is installed just below the arc-shaped hole 97, the width of the spring hook 95 is the same as the outer diameter of the spring hook 95, and the two ends of the spring hook 95 are respectively connected with the hook 96 and the adjuster. The horizontal axis 91 is connected.

As shown in FIG. 2 and FIG. 4 , the spring hook 95 expands and contracts according to the magnitude of the force, while the horizontal shaft 94 of the adjuster slides smoothly up and down in the adjusting slideway 92 .

As shown in Figure 1, Figure 2, Figure 3, when the factory diameter of the motor runner 31 is D1, the spool 4 has been wound with the power line 12, and the diameter of the spool 4 is D' at this time; after the spool 4 is paid off , the diameter of the bobbin 4 is D, and the diameter of the motor runner 31 is D1'. Defined parameters: the maximum measurement length of the constant speed winch 1 is S, the adjustment length of the small belt 8 is s, the inner width of the bobbin 4 is L, the inner width of the motor wheel 31 is b, the radius of the power line 12 is R, and the small The radius of the belt 8 is r.

As shown in FIG. 3 , the inner width of the motor runner 31 is the same as the inner width of the low-power motor runner 70 , and under the adjustment of the small belt rope arrangement 10 , the small belt 8 is wound or placed in the motor runner 31 once. , correspondingly, the low-power motor runner 70 is released or retracted twice, so that the small belt 8 is neatly arranged in the motor runner 31 and the low-power motor runner 70 .

As shown in FIG. 2 , the small belt 8 is a single line. The cross section of the small belt 8 is circular and its length is greater than the adjustment length s. The small belt 8 is wound on the low-power motor runner 70 before each measurement. The inner width of the motor runner 31 is the same as the inner width of the low-power motor runner 70. Under the intelligent adjustment of the small belt rope arrangement 10, the small belt 8 is wound or placed in the motor runner 31 once, and the low-power motor runner is correspondingly adjusted. 70 is paid out or retracted twice, so that the small belts 8 are neatly arranged in the motor runner 31 and the low-power motor runner 70 .

As shown in FIG. 2 , when the spool 4 is paid out clockwise, the low-power motor 7 does not work, and the small belt 8 circles along the main shaft 32 of the motor under the traction of the motor 3, and is neatly arranged on the Inside the motor runner 31; when the spool 4 takes up the thread counterclockwise, the low-power motor 7 works synchronously and rotates clockwise. 31 neatly retracted into the low-power motor runner 70.

As shown in Figures 2 and 5, the spool 4 measures the pay-off, and the force of the belt 5 on the horizontal shaft 91 of the adjuster increases, so that the horizontal shaft 91 of the adjuster moves upward slowly toward the adjustment slideway 92; the spool 4 measures the take-up , the force of the belt 5 on the horizontal shaft 91 of the adjuster is reduced, so that the horizontal shaft 91 of the adjuster slowly moves downward toward the adjusting slideway 92 . When the horizontal axis 91 of the adjuster is at the top of the adjusting slideway 92, the diameter of the motor wheel 31 is D1'; when the horizontal axis 91 of the regulator is at the bottom of the adjusting slideway 92, the diameter of the motor wheel 31 is D1; as shown in Figure 6, when the belt is adjusted During the operation of the regulator 9 , the outer frame 94 of the regulator pulley makes the belt 5 rotate against the regulator pulley 93 .

The main technical indicators of the constant speed winch in this example:

The relationship between the diameter of the bobbin 4 and the diameter of the motor wheel 31 is:

The relationship between the measured length S and the adjustment length s of the small belt 8 is:

The diameter D ₁ of the motor runner 31 is a multiple of the diameter d of the low-power motor runner, and D ₁ =2d is taken.

The measurement length S refers to the allowable measurement range of the constant speed hoist 1 or the maximum measurement length S≤450m, corresponding to the adjustment length s≤50m of the small belt 8.

The length of the adjustment slideway 92 is k(D ₁ '-D ₁ ), and for each constant speed hoist, k is a fixed constant value.

As shown in FIG. 3 , preferably, the small belt 8 is wound to the bottom of the low-power motor runner 70 through the rope guide 11, and the low-power motor runner 70 is free to rotate in the clockwise or counterclockwise direction without being energized, but rotates toward the motor after being energized. The wheel 31 side rotates and the variable frequency shift is performed.

A method for using a constant-speed hoist for engineering measurement, comprising the following steps:

A. Fix the head of the small linear belt 8 in the low-power motor runner 70, then wrap the small belt 8 neatly into the low-power motor runner 70, and finally fix the tail of the small belt 8 on the motor runner In 31, adjust the low-power motor runner 70 so that the small belt 8 tightly connects the low-power motor runner 70 and the motor runner 31;

B. Make the oval belt 5 pass through the outer frame of the adjuster pulley 94, close to the adjuster pulley 93, and then install the belt adjuster 9 on the hoist bracket 2; then use the belt 5 to connect the motor runner 31 and the spool runner 40;

C. After the constant speed winch 1 is connected, the third gear switch 17 is placed in the reverse gear, so that the power line 12 is neatly wound into the spool 4, and then the head of the power line 12 is used to connect the measuring instrument 15, and the measuring instrument 15 Placed on the measuring track 14, ready to measure;

D. The third gear switch 17 is placed in the positive gear, the spool 4 is driven clockwise by the motor 3, and the small belt 8 is surrounded by the motor shaft 32 under the traction of the motor 3, so that the inner diameter of the motor wheel 31 is increased, When the measuring instrument 15 reaches the measurement end point, the third gear switch 17 is placed in the middle gear, and the measurement is stopped;

E. Put the third gear switch 17 in the reverse gear, the motor 3 drives the spool 4 to take up the line counterclockwise, so that the measuring instrument 15 returns to the starting measurement point from the end point, and the small belt 8 is driven by the small power motor 7 along the small power The main shaft of the motor 7 surrounds, and the inner diameter decreases. When the measuring instrument 15 reaches the starting point of the measurement, the third gear switch 17 is set to the middle gear, and the measurement is stopped.

Taking the measurement of the measuring instrument on the surface of the measured building with a slope as an example, it is explained that the constant speed hoist is used for the monitoring of the internal or external appearance of the project. The details are as follows:

1. When the constant speed winch is used to measure the appearance of the dam, as shown in Figures 7, 8 and 9, a preset measurement track 14 is installed on the surface of the dam 13, and the measuring instrument 15 is placed at the head end of the measurement track 14. At this time, the horizontal axis 91 of the adjuster is located in the circular arc hole 97 at the bottom end of the adjustment slideway, and the adjustment length s of the small belt 8 has been wound in the small power motor wheel 70 .

Turn on the switch of the constant speed winch 1 in the forward direction, the motor 3 is energized, the small belt rope arrangement 10 is energized, and the low-power motor 7 is not energized; the spool 4 releases the power line 11 clockwise, and the measuring instrument 15 starts to the dam under the traction of the counterweight The bottom of 13 moves, the diameter of the spool 4 is reduced by D', and the small belt 8 is circled clockwise along the motor wheel 31, so that the inner diameter of the motor wheel 31 is increased by D ₁ ; at this time, the small belt 8 along the motor wheel 31 A row circles one circle, corresponding to the low-power motor wheel 70, two small belts 8 are released in a certain row; due to the increase of the inner diameter of the motor wheel 31, the force of the belt 5 on the horizontal axis 91 of the regulator increases, due to the balancing effect of the force , the horizontal shaft 91 of the adjuster slides up slowly on the adjusting slideway 92 to make the belt 5 rotate smoothly. When the measuring instrument 15 reaches the position of the maximum measuring length S, the diameter of the spool 4 is reduced to D after pay-off, the adjusted length s of the small belt 8 has been fully wrapped into the motor wheel 31, and the inner diameter of the motor wheel 31 is increased to D ₁ . ', at this time, the horizontal axis 91 of the adjuster is located at the top of the adjusting slideway 92, and the switch of the constant speed hoist 1 is turned off.

Turn on the switch of the constant speed winch 1 in the reverse direction, the motor 3 is energized, the small belt rope arrangement 10 is energized, and the low power motor 7 is energized; the spool 4 retracts the power line 11 counterclockwise, and the measuring instrument 15 starts to the dam 13 under the traction of the constant speed winch The top of the bobbin 4 moves, the diameter of the spool 4 is increased by D, the small power motor 7 pulls the small belt 8 to surround the small power motor wheel 70, so that the inner diameter of the motor wheel 31 is reduced by D ₁ '; The bottom of the track 92 moves slowly; when the measuring instrument 15 returns to the top, the switch of the constant speed winch 1 is turned off, and the adjusted length s of the small belt 8 has been wound back into the small power motor runner 70 at this time.

2. When the measuring instrument measures the interior view of a building with a slope, as shown in Figure 10, the measurement track 14 is embedded at the bottom of the panel, and the measurement method is carried out as shown in Figure 11. The measurement track 14 is a pre-buried flexible pipeline, except The working principle of the measuring track 14 is the same as above, except for the difference.

3. When the measuring instrument measures the interior view of a low-slope or horizontal building, as shown in Figure 7 and Figure 10, the measurement track 14 is embedded in the dam body, and the measurement method is carried out according to Figure 12. The power line 12, the bottom power line 12 is connected to the head of the measuring instrument 15, and the upper power line 12 is connected to the tail of the measuring instrument 15; as an optional way, the upper constant speed winch 1 can be replaced with a common winch or a hand-cranked drum 16.

By including a constant speed winch 1, a measuring instrument 15, a measuring track 14, and an attitude calculation chip; the measuring instrument 15 includes a three-axis fiber optic gyroscope and an attitude measuring instrument. attitude angle. The attitude is determined by the attitude measuring instrument. Under the condition of constant speed, the attitude value is a function of the deflection of the dam face or the settlement of the dam body, and the monitoring value of any position along the measurement track can be obtained.

The above-mentioned embodiments are only the preferred technical solutions of the present invention, and should not be regarded as limitations of the present invention. The protection scope of the present invention should be based on the technical solutions recorded in the claims, including the equivalents of the technical features in the technical solutions recorded in the claims. The alternative is protection scope. That is, equivalent replacements and improvements within this scope are also within the protection scope of the present invention.

Claims (5)

1. a uniform hoist for engineering measurement, characterized in that: in the uniform hoist, a hoist bracket, a motor, a bobbin, a belt, a protective cover, a low-power motor, a small belt, a belt adjuster, a small belt rope arrangement are provided in the uniform hoist , the electric motor, the small belt rope arrangement, the small power motor, the belt adjuster, and the spool are fixed on the hoist bracket in turn; one end of the motor is provided with a motor runner, the spool is parallel to the motor runner, and the spool rotates along the motor. One end of the wheel is placed, and the end of the spool close to the motor runner is provided with a spool runner. The motor runner and the spool runner are connected by a closed-loop belt. Between the motor runner and the spool runner, close to the motor One side of the wheel is provided with a low-power motor, and the low-power motor runner is connected to the motor runner through a single-line small belt; The centers of the runners of the motor, the low-power motor and the spool are on the same straight line, and the low-power motor runner is connected to the motor runner through a single-line small belt; It rotates smoothly with the small power motor runner; The belt adjuster is fixed on the hoist bracket through the adjuster support, and is located between the low-power motor runner and the spool runner, close to the side of the spool runner, and a protective cover is provided on the runner side of the constant-speed hoist; One end of the small belt is fixed in the small power motor runner, and the other end of the small belt is fixed in the motor runner. The top of the power motor runner. 2. The constant-speed hoist for engineering measurement according to claim 1, wherein the belt adjuster is provided with a regulator support, a regulator horizontal axis, a regulator pulley, and an outer frame of the regulator pulley. There are hooks at the bottom of both ends; The belt is limited by the outer frame of the adjuster pulley, and the belt is close to the adjuster pulley and passes through the belt adjuster; The pulley is fixed on the adjuster support, and the horizontal axis of the adjuster also functions as a bolt; There is an adjusting slideway between the two sides of the adjuster support, and the width of the adjusting slideway is the same as the outer diameter of the horizontal shaft of the adjuster; the lower part of the adjusting slideway is provided with an arc type larger than the external diameter of the horizontal shaft of the adjuster A spring hook is installed just below the arc-shaped hole, the width of the adjusting slide is the same as the outer diameter of the spring hook, and the two ends of the spring hook are respectively connected with the hook and the horizontal axis of the adjuster; The spring hook expands and contracts according to the magnitude of the force, and at the same time, the horizontal axis of the adjuster slides up and down smoothly in the adjustment slideway, so that the belt keeps a compact rotating state. 3. The constant-speed hoist for engineering measurement according to claim 1, is characterized in that: when the motor runner is the factory diameter D ₁ , the bobbin has been wound around the power line, and the bobbin diameter is D' at this moment; The diameter after the line is completed is D, and the diameter of the motor runner is D ₁ ′ at this time, and their dimensional relationship is The relationship between the measurement length S and the adjustment length s of the small belt, the inner width L of the bobbin, the inner width b of the motor runner, the radius R of the power line, and the radius r of the small belt are: The diameter D ₁ of the motor runner is a multiple of the diameter d of the low-power motor runner, take D ₁ =2d; the measurement length S refers to the allowable measurement range of the uniform speed hoist, which requires S≤450m, corresponding to the adjustment length of the small belt s≤ 50m. 4. The constant speed hoist for engineering measurement according to claim 1, is characterized in that: the small belt is a single line, and the cross section of the small belt is circular and the length is greater than the adjustment length s, and the small belt is wound around before each measurement. On the low-power motor runner; the inner width of the motor runner is the same as the inner width of the low-power motor runner. Under the adjustment of the small belt rope arrangement, the small belt is wound or placed in the motor runner. The runner is released or retracted twice, so that the small belts are neatly arranged in the motor runner and the low-power motor runner. 5. a using method of a constant speed hoist for engineering measurement, is characterized in that: comprise the following steps, A. Fix the head of the small linear belt in the low-power motor runner, then wrap the small belt neatly into the low-power motor runner, and finally fix the tail of the small belt in the motor runner to adjust the low-power The motor runner makes the small belt tightly connect the low-power motor runner and the motor runner; B. Make the oval belt pass through the outer frame of the adjuster pulley, close to the adjuster pulley, and then install the belt adjuster on the winch bracket; then connect the motor wheel and the spool wheel with the belt; C. After the constant speed winch is connected, turn the third gear switch to the reverse gear, so that the power line is neatly wound into the spool, then connect the measuring instrument with the head of the power line, and place the measuring instrument on the measuring track to prepare for measurement ; D. Set the third gear switch to the positive gear, and the spool will pay out clockwise under the driving of the motor, and the small belt will circle along the main shaft of the motor under the traction of the motor, so that the inner diameter of the motor runner will increase. When the measuring instrument reaches the end of the measurement , put the third gear switch to the middle gear, stop the measurement; E. Set the third gear switch to the reverse gear, the motor drives the spool to take up the thread counterclockwise, so that the measuring instrument returns to the starting measurement point from the end point. Decrease, when the measuring instrument reaches the starting point of measurement, put the third gear switch to the middle gear and stop the measurement.