JPH0427735Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention relates to a transportation mechanism for transporting cut wood, etc. by placing a pulley on a cable.

<Conventional technology> Conventionally, as a means of transporting cut lumber etc. to a logging area, a transportation cable is stretched between the logging area and the logging area, and the wire is passed through a single pulley with a hook on the bottom. There are those that suspend timber from the above-mentioned cable, connect a separate loop-shaped wire to the pulley, and pull it in one direction with a winch to collect timber, and those that run on a single track. There was a monorail that transported lumber.

<Problems that the invention aims to solve> However, with conventional equipment, it is necessary to install a separate traction wire and winch, which requires additional costs and labor, and the traction resistance is large when the transportation distance is long. However, it is difficult to use this method in cases where the route frequently bends. On the other hand, traction wires hang down significantly, so they cannot be used if there are obstacles such as power transmission lines in the way of the transportation cable, and it is not possible to install multiple track cables and switch between them at any time. There were flaws.

In addition, although it is possible to switch the route of a single-track monorail to another track, it cannot be installed if there is a large valley or river crossing on the way.
Another problem was that the equipment was expensive and time consuming.

<Means for Solving the Problems> The present invention for solving the above-mentioned problems involves constructing a cable 3 and suspending an object to be transported on a transporter 5 having a pulley that moves on the cable 3. In equipment for lowering and transporting, hanging balls 1 are fixedly disposed on the cable 3 at regular intervals, a drive device is provided for driving a running pulley 31, and a groove 31a on the circumferential surface of the running pulley 31 is engaged with the cable. The above-mentioned engager 3
It is characterized in that engaging recesses 31b into which the hanging balls 1 engage are provided at the same intervals as the set intervals of the hanging balls 1.

<Function> The present invention is for transporting wood, etc. without using a traction wire by a transporter 5 that is self-propelled on a cable 3 installed.
By this and the engagement recess 31b provided in the traveling pulley 31, stable and efficient conveyance is performed.

<Example> As shown in FIG. 1, the present invention is composed of a track cable 3 on which hanging balls 1 are fixed at regular intervals, and a transport machine 5 that runs on the cable 3. . Each embodiment will be described below.

[1] Track cables and cable installation equipment Figure 2 shows the disassembly of hanging balls 1 that are successively fixed to cables at regular intervals () (see Figure 1) used in conventional cable-type lumber collection equipment. FIG.

The hanging ball 1 is constructed by fitting a pair of half balls 1a of the same shape together, and an engaging groove 1b for engaging the wire 7 constituting the cable 3 runs through the center line of the circular plane of the half ball 1a. A gasket 9 made of plastic, rubber, etc. is housed inside.

An insertion hole 13 through which the bolt 11 is inserted or screwed into the hemisphere 1a and a screw hole 15 are formed at positions symmetrical to the engagement groove 1b of the circular plane of the hemisphere 1a. A notch 17 is formed in the insertion opening on the spherical side of the insertion hole 13 to prevent the bolt head from protruding onto the spherical surface.

The pair of hemispheres 1a constructed as described above are stacked one on top of the other with the wire 7 sandwiched between the engagement grooves 1b, and are fastened and fixed by bolts 11 inserted through the two insertion holes 13. Here, the packing 9 serves to securely fix the fixed hanging ball 1 so that it does not slide on the wire 7, and to prevent corrosion of the wire 7 inside the hanging ball 1 due to seepage of rainwater, etc. .

As described above, the cable 3, in which the hanging balls 1 are fixed to the wire 7 at regular intervals, is installed on an arbitrary track by support columns 19 provided at arbitrary intervals on the ground. 3, 4, and 5 are for explaining the structure of the cable holding portion 23 attached to the support column 19. FIG.

An overhead wire support 21 having a ring 21a that is fitted and fixed to the circumferential surface of the support 19 is attached to the support 19, and the support 21 has a crank-shaped arm 21b and a holding part provided at the tip thereof. It consists of 23. The tip of the crank-shaped arm 21b is bent horizontally, and there are two bolt holes 21c at the tip.
The plate-shaped holding part 23 is vertically fastened and fixed by fixing bolts 21d.
The holding part 23 is made up of a pair of rectangular plate members 23a to which half balls 1a are fixed at the four corners, and a hole 23b corresponding to the bolt hole 21c is bored in the center of the plate member 23a. The length is the same as the interval at which the hanging balls 1 are fixed. The upper side has a wire groove 23d for engaging the wire 7.
is provided. Also, a hinge portion 23c for rotatably supporting the triangular plate 25 is provided at the vertical side.
is provided. The length of the vertical side must be at least twice the depth of the groove 31a of the running pulley 31 in order to allow the running pulley 31 and the clamping pulley 33, which will be described later, to pass smoothly.

When fixing the holding part 23 to the arm part 21b, the half balls 1a at both ends of the upper sides of the pair of plate members 23a sandwich the wire 7 so that the wire 7 passes through the upper side of the holding part 23, and at the same time, the hinge part 23c A rotation shaft 25a provided on one side of a triangular plate 25, which will be described later, is clamped and fastened with a fixing bolt 21d.

As described above, the triangular plate 25 is rotatably attached to the left and right ends of the holding part 23. A half ball 1a is attached to the apex of the most acute angle of the triangular plate 25, and a wire 7 is inserted through the aforementioned holding part 23.
are held on the same straight line, and a wire groove 25b is provided on the upper side similarly to the holding part 23. A rotation shaft 25a is vertically provided on the vertical side of the triangular plate 25 that engages with the hinge portion 23c of the holding portion 23 so as to rotatably support the triangular plate 25.

As a result of this configuration, the holding part that supports the cable 3 can be bent at any angle, so the conveyance track can be set in any shape, and the load on the cable 3 at the bend in the route is reduced. Less is needed.

The cable 3 set as described above can switch its trajectory at the point 27. The point 27 consists of a vertical plate 26 (see FIG. 6B) having the same crank-shaped vertical cross section as the support 21 attached to the support column 19 described above, and a sector-shaped vertical plate erected across the front and rear ends. horizontal plate 29 (see A in the same figure). At the upper end of the vertical plate 26, a switching rail 26a is attached in parallel to the vertical plate 26 with bolts or the like, and the upper and lower ends thereof are provided with projections having the same shape as the hanging balls 1 at regular intervals. A moving mechanism 27a such as casters is attached to the lower side of the horizontal plate 29, and the point 27 is configured to rotate around a fan-shaped center point 27b. One end of a plurality of cables 3 is connected to the moving end of the point 27, and by rotating the point 27, an arbitrary cable 3 can be connected.
The cable 3 connected to the center end of the point is connected via a switching route 26a.

[2] Self-propelled transport machine Next, the self-propelled transport machine 5 that runs on the cable 3 will be described based on FIGS. 1, 7, and 8. As shown in FIG. 8, the transporter 5 includes a frame-shaped main body 35 whose front and rear surfaces and one side are open to allow the support 21 and the holding part 23 to pass through, and a pair of frame-shaped main bodies 35 housed therein. It consists of a traveling pulley 31, a clamping pulley 33, etc.

The main body 35 has a floor section 35 on which a loading platform 37 is suspended.
a, a ceiling part 35b, and a pair of side pillars 35c that vertically connect these parts, and one side is used to allow the arm part 21b of the support 21 to pass through when the transporter 5 passes through each pillar 19. It is opened in the form of a slit, and the front and rear surfaces are opened for the insertion of the holding part 23 and the cable 3.

As shown in FIG. 7A, a pair of running pulleys 31 are rotatably supported in the upper part of the main body 35 so that the shaft spacing is n+/2 (n is an integer of 4 or more, as described above). .

A groove 31a with a V-shaped cross section for engaging the wire 7 is provided on the circumferential surface of the traveling pulley 31, and engaging recesses 31b for engaging the hanging ball 1 are provided on the circumferential surface at intervals of . There are multiple locations. The depth H of the engagement recess 31b is determined by the following formula: H= The target is d+R(1-COS(θ/2).In addition to this, the distance between the axes is set to ``n'' as described above.
+/2", the engagement recess 31 of at least one of the pair of traveling pulleys 31
b is always engaged with the hanging ball 1, so that the running pulley 31 does not slip and stable running can be achieved at all times.

FIG. 7B is a plan sectional view showing the bearing portion of the traveling pulley 31. FIG. The traveling pulley 31 is fixed to the center of a rotating shaft 31c having a length B, and both ends of the rotating shaft 31c are rotatably held by bearings 39 fixed to a side post 35c.

The inside of the bearing 39 has an arc shape that curves inward with a radius of B/2, and the center of the arc is the same point as the rotation center of the traveling pulley 31. Rotating shaft 31c
Both ends of can slide along the arc, and as a result, the traveling pulley 31 can freely rotate in the vertical direction. As a result, the running pulley 31 rotates along the curve of the cable 3, and stable running is achieved.

A chain gear 31d that rotates integrally with the traveling pulley 31 is provided coaxially with the traveling pulley 31. The drive chain 32 wraps around the chain gear 31d of each traveling pulley 31 and a drive chain gear 34a driven by a hydraulic motor 34 attached to the floor 35a, and transmits the driving force of the drive chain gear 34a to each traveling pulley 31. are doing. The drive chain 32 is a tension pulley 3 provided in the middle.
6, a constant tension is maintained. The tension pulley 36 is pivotally supported by a support rod 38 fixedly suspended from the ceiling 35b so as to be able to move up and down within a certain range, and is biased by a spring 38a in the direction of applying tension to the drive chain 34a. There is.

Furthermore, a clamping pulley 33 is engaged from below between the pair of traveling pulleys 31, so that the cable 3 is securely held. The clamping pulley 33 is the traveling pulley 3
Same shape as 1, but no driving force is transmitted and cable 3
rotates freely as it passes. Clamping pulley 33
is pivotally supported by one end of the rotating shaft 33a, and a balance weight 41 for maintaining the overall balance of the transporter 5 is joined to the other end in a protruding state on one side of the main body 35.

The rotating shaft 33a is rotatably supported by an elevating rod 42, and the lower end of the elevating rod 42 is connected to the main body 35.
Hydraulic cylinder 43 attached to the floor 35a of
The clamping pulley 33, which is connected to the lift rod 42 and pivotally supported by the lift rod 42, is controlled to rise and fall by a hydraulic control mechanism which will be described later.

Further, a travel pressure regulating valve 45 is provided on the floor portion 35a, and an operating lever 47 is bent and protrudes laterally from the upper portion thereof. A hydraulic pump 51 and a motor 49 for driving the pump 51 are disposed at the lower portion of the opposite side from which the balance weight 41 protrudes, and together with the balance weight 41 maintains the balance of the main body 35. On the other hand, a search bar 52 is rotatably attached to the front and rear ends of the main body 35, the tip of which is always in contact with the cable 3, and as the cable 3 moves up and down, a limit switch provided at the rotation fulcrum of the search bar 52 is activated. Ls-L and Ls-R
It is designed to perform on/off operations.

Next, the hydraulic control mechanism of the transporter 5 will be explained. FIG. 9 is a circuit diagram of hydraulic equipment.

The oil sent out at a constant pressure from the oil reservoir 50 to the hydraulic pump 51 flows into the hydraulic motor 34 through the travel pressure distribution valve 45 that controls the direction of the oil flowing into the hydraulic motor 34. On the other hand, pressure is applied to the hydraulic cylinder 43 through an electromagnetic pressure distribution valve 53 that simultaneously controls oil supply and oil discharge to the hydraulic cylinder 43. The oil pressure applied to the circuit is controlled by an automatic oil pressure adjustment mechanism 56 provided in parallel with the circuit.

To explain the operation of this hydraulic circuit, the driving direction of the hydraulic motor 34 that drives the traveling pulley 31 is determined by the flow direction of oil sent by the hydraulic pump 51, and by applying hydraulic pressure to the hydraulic cylinder 43. Then, the lifting rod 42 is raised and lowered as the oil pressure decreases due to the drained oil. The traveling pressure regulating valve 45 regulates the direction of oil flowing into the hydraulic motor 34 by raising and lowering the port using the operating lever 47. The electromagnetic pressure distribution valve 53 raises and lowers the port 53a using a solenoid coil, and the oil pressure in the hydraulic cylinder 43 is electrically controlled. The solid line in FIG. 9 shows that the port 53a is set in the oil supply state, and in the case of the imaginary line, the oil in the cylinder is discharged by pressure due to the weight of the clamping pulley 33 and the like. Further, by closing the cock 58, the pressure inside the hydraulic cylinder 43 can be kept constant regardless of the operation of the electromagnetic pressure distribution valve 53, and the position of the clamping pulley 33 can be maintained at a constant location.

Such a hydraulic mechanism has the advantage that by driving a single hydraulic pump 51, it is possible to simultaneously drive the hydraulic motor 34 back and forth and control the lifting and lowering of the clamping pulley 33, and the circuit becomes simple. Since the medium is used as a medium, the load applied to the running pulley 31 is not directly applied to the prime mover 49, and stable running is always achieved.

FIG. 10 shows a holding part 23 that holds the cable 3.
is an electric circuit diagram for controlling the hydraulic pressure for raising and lowering the clamping pulley 33 according to the travel of the transporter 5 when the transport mechanism 5 passes through the transporter 5.

Sw is an operating lever 4 that operates the traveling pressure distribution valve 45
7, and is connected to terminals S-L and S-R when the operating lever 47 is operated forward or backward, respectively. RY-L, RY-R and
RY-O is a relay, and contacts a ₁ , b ₂ ,
Contacts _A3 , _A4 and _A5 are connected. Ls−L, Ls
-R is a limit switch that is linked to the rotation of the search bar 52. Further, Z is a solenoid coil of the electromagnetic pressure distribution valve 53.

When the operating lever 47 is connected in the forward direction, the transporter 5 travels in the forward direction by the drive of the hydraulic motor 34, and at the same time, the terminal SL is connected. As the transporter 5 advances and approaches the holding part 23 holding the cable 3, the cable 3 gradually tilts upward and the search bar 52 on the traveling direction side rotates upward. As a result, contact _c1 of limit switch Ls-L is connected, relay RY-L, switch Sw,
Power is supplied through the circuit of power supply B and limit switch Ls-L, and relay RY-L connects contacts _a1 and _a2 . By connecting contact a ₁ , current will always flow to relay RY-L via normally closed contact c ₄ of limit switch Ls-R, even if the limit switch
Even if the contact c ₁ of Ls-L is broken, current flows through the relay RY-L until the contact c ₄ is broken, biasing the contact a ₂ in the connection direction. Connection of contact _a2 causes relay RY-O to pass current to connect contact _a5 , which energizes solenoid coil Z and moves the port of electromagnetic pressure distribution valve 53 to the oil drain side.

At this point, no pressure is applied to the hydraulic cylinder 43, and the clamping pulley 33 descends due to its own weight and the weight of the balance weight 41, and the oil in the hydraulic cylinder 43 is also discharged.

The above-described state of the circuit is maintained until the transporter 5 passes through the holding part 23. That is, since the cable 3 on the rear side of the transporter 5 is tilted upward after passing through the holding part 23, the upward rotation of the search bar 52 rotating along the cable 3 causes the contact point of the limit switch Ls-R to c ₄ is disconnected, and the energization of the above circuit is stopped. As a result, the electromagnetic pressure distribution valve 5, which had been switched to the oil drain side by the solenoid coil,
The port No. 3 is moved to the pressure oil side by a biasing spring etc. built into the electromagnetic pressure distribution valve 53, and oil pressure is again applied to the hydraulic cylinder 43, and the clamping pulley 3
3 rises to engage cable 3.

If it is now retracted, a similar circuit is connected and operates in the same manner as described above.

The timber collection equipment configured by the track cable 3, cable installation equipment, and self-propelled transporter 5 as described above suspends wood by wire or the like below the loading platform 37 and transports the transporter 5 automatically. When the cable 3 is moved, the running pulley 31 having the engagement recess 31b engages with the hanging ball 1 provided on the cable 3.
1 does not idle or derail, and engager 3
When passing through the holding part 23 of the transporter 5, the clamping pulley 33 is raised and lowered by the above-mentioned hydraulic control mechanism etc. to maintain stability and smooth running of the transporter 5, and to efficiently move the material to the collecting area. It is now possible to collect wood.

<Effects of the Invention> As a result of the present invention being constructed as described above, the installation of a traction wire and the equipment and energy for moving it are not necessary. In addition, there is no need to consider transportation distance or topography such as valleys or rivers, and the most efficient transportation route can be freely determined, and multiple routes can be set up and used by switching between them at any time. This has the effect of allowing efficient wood collection.

[Brief explanation of the drawing]

Figure 1 is a side cross-sectional view showing the usage condition when the transporter is placed on a cable with a hanging ball, Figure 2 is an exploded perspective view showing how the hanging ball is attached, and Figure 3 is a state where it is attached to a support. Cross-sectional view of the support of FIG. 4A,
B and C are a plan view, a side view, and a front sectional view of the holding part;
Fig. 5 is a partial enlarged view showing the attachment part of the triangular plate, Fig. 6 is a plan view and front view of the point, and Fig. 7 A, B is a partial side view showing the relationship between the axes of the traveling pulley. A cross-sectional view and a partial plan view of the shaft support of the rotating shaft, Figures 8A and B are a plane sectional view and a side sectional view of the transporter showing the arrangement and movement of each component of the transporter, and Figure 9 is a hydraulic diagram. FIG. 10 is a circuit diagram of hydraulic equipment representing the control mechanism, and is an electric circuit diagram for controlling the lifting and lowering of the clamping pulley. 1... Hanging ball, 3... Cable, 5... Transporter,
19...Strut, 21...Support, 23...Holding part, 31...Travel pulley, 31a...Groove, 31b...
...Engagement recess, 34...Hydraulic motor, 43...Hydraulic cylinder, 45...Traveling pressure distribution valve, 53...Electromagnetic pressure distribution valve.

Claims (1)

[Scope of utility model registration request] In a facility in which a cable 3 is constructed and objects to be transported are suspended and transported by a transporter 5 having a pulley that moves on the cable 3, hanging balls 1 are fixedly arranged on the cable 3 at regular intervals, and the cable 3 is moved. A drive device for driving the pulley 31 is provided, and a groove 31a on the circumferential surface of the traveling pulley 31 in which the cable engages is provided with the cable 3.
This material collection equipment includes a self-propelled transporting machine provided with engaging recesses 31b in which the hanging balls 1 are engaged at the same intervals as the set intervals of the hanging balls 1.