JPH0326877Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an elevating device that can improve the safety of elevating and lowering structures such as utility poles.

[Conventional technology]

Conventionally, for example, when going up and down from a telephone pole,
Methods that have been adopted include using scaffolding bolts installed on utility poles at equal intervals, or leaning a ladder against a utility pole and using this ladder.

[Problem that the invention attempts to solve]

However, in any of the above methods, when going up and down, move your hands and feet from the lower step to the upper step.
Alternatively, it is necessary to move from the upper shelf to the lower shelf, and there is a risk that a hand may slip or a foot may misstep during the transfer operation, leading to a fall accident. In addition, in the case of the method of using scaffolding bolts, since they are fixedly installed, the third
There was a problem that it could be used by anyone, which is not desirable in terms of crime prevention.

[Purpose of invention]

The present invention was developed to solve the above problems, and it is possible to improve the safety of climbing up and down structures such as utility poles, thereby preventing falls, and also preventing third parties from using the device. The purpose of this invention is to provide a device for lifting and lowering structures that can be used.

[Structure of the idea]

The lifting device according to the present invention includes a support that is detachably attached to a structure along the height direction thereof, and two pairs of lifting tools that are provided on the support that can be raised and lowered, Since the support column is detachable from the structure, when the elevating device is not required, it can be removed from the structure to prevent third parties from using it.

In addition, in order to ensure the safety of workers when ascending and descending, one pair of elevating tools includes a main body provided on a support that can be raised and lowered freely, a grip bar provided on this main body, and a main body. The grip has a rotatably provided grip part, and when the grip part is rotated in the direction of the grip bar, it is locked to the support part, and when the grip part is rotated in the direction away from the grip rod, the grip part is rotatably provided. The other pair of elevating tools includes a main body provided on the post so as to be movable up and down, a step bar provided on the main body, and a lock mechanism that releases the lock on the support. The main body has a rotatable step, and when the step rotates in the direction of the step stick, it is locked to the support column, and when it rotates in the direction away from the step stick. a locking mechanism that unlocks the support portion by movement;
The engaging portion is provided in an annular shape above the step stick and engages with the tip of the foot placed on the step stick. In the above configuration, the grip part is for holding in the hand and supporting the body weight, and the step part is for supporting the body weight by placing the foot with the tip of the foot engaged in the engaging part.

When going up and down using such a lifting device, the locking mechanisms of three of the four lifting devices are locked, and the locking mechanism of the remaining lifting device is released to perform the lifting. The other 3 in turn
Raise and lower two lifting devices. At this time, by rotating the grip while holding one of the lifting tools, the locking mechanism is locked and unlocked, and the lifting tool is raised and lowered while holding the grip. Regarding the other lifting device, by rotating the foot with the foot engaged in the engaging portion, the locking mechanism is locked and released, and the foot is engaged with the engaging portion. Raise and lower the lifting equipment while keeping the position in place. Therefore, it is possible to move up and down safely without the need to change limbs.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the attached FIGS. 1 to 11.

FIG. 1 is a diagram showing a column 1 of a lifting device according to the present invention and a utility pole A to which this column 1 is attached. As shown in FIG. 2, the support column 1 includes a trunk body 1a having an I-shaped cross section, and side plate portions provided along the longitudinal direction of the trunk body 1a on each side of one end of the trunk body 1a. 1b, and has a structure in which the upper and lower parts are divided into two parts at the center in the longitudinal direction and are rotatably joined by a hinge 2 for convenient carrying. And, this support section 1 is
It is attached to utility pole A by engaging hooks 3 and 4 attached to its upper and lower ends, respectively, to support fittings 5 and 6 attached to the upper and lower ends of utility pole A, respectively.

As shown in FIG. 3, a pair of elevating tools 7, 7 and another pair of elevating tools 8, 8 positioned below them are attached to the column 1 configured in this manner so as to be able to rise and fall freely. It is being

One of the lifting tools 7 is for a worker to hold in his/her hand to support his/her weight, and is constructed as shown in FIGS. 4 to 7. That is, in these figures, reference numeral 9 is a main body, and at the upper end of one side thereof, a pair of guide rollers 10,
Two pairs of rollers 10 are rotatably provided so as to sandwich one side and the other side of the side plate 1b, respectively, and a pair of guide rollers 11, 11 are attached to the side plate 1b in its width direction. It is rotatably provided so as to be held in place. Also, at the lower end of the main body part 9, two pairs of guide rollers 12, 12, 12, 12 and a pair of guide rollers 13, 13 are rotatably provided, respectively, similarly to the upper end thereof. As a result, the main body part 9 is connected to the side plate part 1b.
It is designed to be able to move smoothly in the vertical direction without deviating from it.

Further, a lock mechanism 16 consisting of a cam 14 and a grip portion 15 is provided at the center of the other side of the main body portion 1b. The cam 14 is for fixing the lifting tool 7 to the support column 1, and is rotatably provided on the main body 9. When rotated clockwise in FIG. 4, one side of the cam 14 is engaged with the side plate portion 1b and when rotated counterclockwise, the engagement with the side plate portion 1b is released. The cam 14 is always urged by a spring 17 to rotate clockwise, thereby fixing the elevating tool 7 to the support 1.

On the other hand, the grip part 15 is for rotating the cam 14, and one end thereof is fixed to the other side of the cam 14, and the other end is a grip bar fixed to the upper end part of the main body part 9. 18. When the grip portion 15 and the grip bar 18 are both gripped, the cam 14 rotates clockwise and the locking mechanism 16 is locked against the support portion 1.
When the grip portion 15 is rotated counterclockwise against the force of the spring 17, the lock mechanism 16 is unlocked.

Note that the reference numeral 19 in the figure is a retaining ring for securing a safety belt to prevent the worker from falling.

The other lifting device 8 is for the operator to place his or her feet on, and as shown in FIGS. It is similar to the elevator 7. That is, the reference numeral 20 indicates the main body, 21, 22, 23,
24 is a guide roller, 27 is a cam 25 and a stepping portion 2
6 is a lock mechanism, 28 is a spring, and 29 is a step stick. The tread portion 26 is connected to the grip portion 15.
In addition, the step sticks 29 correspond to the grip sticks 18, and with the step stick 29 placed on one side of the toe, the user can step on the step 25 with the other side of the toe to apply weight. As a result, the lock mechanism 27 can be brought into a locked state.

By the way, with only the above configuration, the foot 26 can be rotated counterclockwise.
Therefore, not only is it impossible to release the locked state of the lock mechanism 27, but also it is not possible to move the elevator 8 in the vertical direction. Therefore, in the lifting device of the present invention, an engaging portion 30 is attached to the step portion 26.

That is, metal fittings 31 and 32 that protrude upward are fixed to the step portion 26 and the step stick 29, respectively, and respective ends of a belt 33 are fixed to the upper ends of the metal fittings 31 and 32, respectively. An annular engaging portion 30 is formed by the step portion 26, the step stick 29, the metal fittings 31, 32, and the belt 33. By pushing the metal fitting 31 toward the support column 1 side with the tip of the foot inserted into the engaging portion 30, the foot
can be rotated counterclockwise, which in turn can unlock the lock mechanism 27, and by moving the feet up and down in this state, the elevator 8 can be moved up and down.

Therefore, the electric pole A is
When going up and down from the pole A,
Attach. Next, the lifting tool 7 is attached to the support part 1 by inserting the side plate part 1b between the guide rollers 10, 10, 11, 11, 12, 12, and 13, 13 from the lower end thereof. The other lifting tools 7, 8, 8 are similarly attached to the support column 1 and arranged as shown in FIG. Note that the lifting tools 7 and 8 may be attached to the support 1 in advance. When climbing up the utility pole A, the body weight is supported by the three lifting tools 7, 8, 8, and the remaining lifting tools 7 are unlocked, moved upward, and then locked. Thereafter, the three elevators 7, 8, 8 are sequentially moved upward, and by repeating this, the person can ascend. Note that the moving order of the elevators 7, 7, 8, and 8 is arbitrary and is not limited to the above procedure. Also, telephone pole A
If you want to go down from the top, just follow the steps in the opposite direction to go up.

Here, according to the above-mentioned elevating device, one pair of elevating tools 7, 7 can be moved in the vertical direction while always being held by hand, and the other pair of elevating tools 8, 8 can be moved vertically. can be moved in the vertical direction with the tip of the foot engaged with the engaging portion 30. Therefore, there is no need to perform a movement of changing hands and feet, and an accidental fall accident can be prevented.

In addition, in the above embodiment, the lock mechanism 1
The cam 14,
25, but the present invention is not limited thereto, by forming a large number of engagement recesses in the support column 1 along its longitudinal direction, and by forming the grip portions 15 (stepping It is also possible to provide an engagement shaft that engages and disengages from the engagement recess by rotating the portion 26).

[Effect of idea]

As explained above, the elevating device for a structure of the present invention has a column that is detachably attached to the structure along the height direction, and a lock mechanism, and is provided on the column so that it can be raised and lowered. Since the structure is equipped with two pairs of lifting equipment, it is possible to improve the safety of climbing up and down structures such as telephone poles, preventing falls of workers, and also preventing third parties from using the equipment. Effects such as being able to prevent this can be obtained.

[Brief explanation of the drawing]

The attached FIGS. 1 to 11 show an embodiment of the present invention, in which FIG. 1 is a perspective view showing a support and a utility pole to which it is attached, FIG. 2 is an enlarged sectional view of the support, and FIG. The figure is a partially omitted front view showing two pairs of lifting tools attached to the support column, and Figures 4 to 7.
The figures show one pair of lifting devices, FIG. 4 is a partially cutaway side view thereof, FIG. 5 is a partially cutaway front view thereof,
Figures 6 and 7 are the - line in Figure 4, respectively.
8 to 11, which are cross-sectional views taken along the line -, show the other pair of lifting devices and are similar to FIGS. 4, 5, 6, and 7, respectively. DESCRIPTION OF SYMBOLS 1... Strut part, 7... Lifting tool (one pair of lifting tools), 9... Main body part, 14... Cam, 15... Grip part, 16... Lock mechanism, 18... Grip bar, 2
0... Body part, 26... Stepping part, 27... Lock mechanism, 29... Stepping stick, 30... Engaging part, A...
Telephone pole (structure).

Claims (1)

[Scope of utility model registration request] The structure includes a support that is removably attached to the structure along the height direction thereof, and two pairs of lifting tools that are provided on the support that can be raised and lowered, and the one pair of lifting tools are connected to the support. It has a main body part that is movable up and down in the part, a grip bar that is provided on the main body part, and a grip part that is rotatably provided in the main body part, and the grip part is moved in the direction of the grip bar. a locking mechanism that locks the support column by rotation and releases the lock from the support column by rotation in a direction away from the grip bar; , a main body part provided on the pillar part so as to be freely raised and lowered, a step stick provided on the main body part, and a step part rotatably provided on the main body part, and the step stick of the step part. a locking mechanism that is locked to the support by rotating in a direction and unlocked to the support by rotation in a direction away from the step; and an upper side of the step. 1. A device for lifting and lowering a structure, comprising an engaging portion provided in an annular shape and engaging with a toe placed on the step bar.