JP2007210405A - Wire rope operation mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily carry out locking/unlocking at the time of pulling up of a wire rope. <P>SOLUTION: In the wire rope operation mechanism, a slide pin 201 and a fulcrum pin 202 inserted in an operating lever 120 are inserted in a slide groove 111 and a fulcrum groove 112 formed on a plate 110. If the operating lever 120 is rotated from an upper side to a lower side, the slide pin 201 moves in the slide groove 111, and the fulcrum pin 202 moves from a right end to a left end and returns to the right end again, in the fulcrum groove 112. The operating lever 120 is pushed down to raise the slide pin 201, thereby pulling up an inner wire rope 41b. A lock pin 203 equipped to a lock bar 130 is energized by a spring, and fitted in a locking recessed portion 114 to be locked when the operating lever 120 reaches the lower end. If an operating rod 140 is pulled out, the operating rod 140 is engaged with the lock bar 130 to pull out the lock bar 130 and the lock pin 203, thereby releasing locking. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wire rope operation mechanism, for example, a drive unit of a drive unit (portion provided with a drive wheel) provided in a simple automatic guided vehicle can be easily lifted upward from a floor surface. It is devised so that it can be easily locked and unlocked in the state.

  There is a simple automatic guided vehicle as a kind of automatic guided vehicle. This simple automatic guided vehicle is configured by including a drive unit, a control unit, and the like on a cart (for example, a “handcart”). Here, with reference to FIG. 7 which is a side view and FIG. 8 which is a rear view, a recently developed simplified automatic guided vehicle will be described.

  As shown in FIGS. 7 and 8, in the handcart 10 of the simple automatic guided vehicle 1, a loading frame 11 and a handwheel handle 12 are configured by assembling a pipe frame. A pair of universal caster wheels 13 are attached to the bottom surface of the loading platform 11 and a pair of fixed caster wheels 14 are attached to the rear side thereof.

  Further, a drive unit 20 is disposed at the bottom of the loading platform 11. A battery 30, a control unit 31, an operation switch panel 32, and a drive wheel lifting / lowering device 40 are attached to the hand handle 12.

  Next, the detailed structure of the drive unit 20 will be described with reference to FIG. 9 which is a side view and FIG. 10 which is a rear view.

As shown in FIGS. 9 and 10, the upper frame 21 of the drive unit 20 is fixed to the bottom of the loading platform 11 of the handcart 10. The lower frame 22 is connected to the upper frame 21 through a pantograph connection mechanism 23 so as to be vertically movable. In this way, the upper limit movement position and the lower limit movement position of the lower frame 22 arranged below the upper frame 21 are regulated by the pantograph type coupling mechanism 23.
A compression coil spring 24 is interposed between the upper frame 21 and the lower frame 22, and the lower frame 22 is urged downward by the compression coil spring 24.

The drive unit 25 is coupled to the lower portion of the lower frame 22 so as to be rotatable (steering is rotatable) within a horizontal plane. The drive unit 25 has a pair of drive wheels 26. The drive unit 25 incorporates two drive motor mechanisms (not shown), and the drive force generated from each drive motor mechanism is individually transmitted to the drive wheels 26 via the sprocket 27, the chain 28, and the sprocket 29. It has come to be.
Therefore, the right drive wheel 26 and the left drive wheel 26 are driven to rotate by separate drive motor mechanisms. Thus, the simple automatic guided vehicle 1 travels by driving the pair of drive wheels 26 to rotate. Further, steering can be performed by changing the rotational speeds of the right and left drive wheels 26.

Furthermore, as shown in FIG. 9, one end of an outer wire rope 41 is connected to the lower frame 22. The other end of the outer-attached wire rope 41 is connected to the drive wheel lifting / lowering device 40.
The outer wire rope 41 is obtained by inserting an inner wire rope into the outer sleeve.

Although details will be described later, by pulling the inner wire rope of the outer-attached wire rope 41 by the drive wheel lifting / lowering device 40, the lower frame 22 and the drive unit 25 are lifted upward, and the drive wheel 26 is floated from the floor surface. be able to.
On the contrary, by pushing back the inner wire rope from the drive wheel lifting / lowering device 40, the lower frame 22 and the drive unit 25 are lowered, and further, the drive wheel 26 is brought to the floor by being urged by the spring force of the compression coil spring 24. Pressed.

  Next, the detailed structure of the drive wheel lifting / lowering device 40 will be described with reference to FIG. As shown in FIG. 11, the bracket 42 of the driving wheel elevating device 40 is attached to the handwheel handle 12 of the handcart 10. An outer sleeve 41 a is fixedly supported by a bracket 42 on the other end side of the outer-attached wire rope 41 (on the driving wheel lifting / lowering device 40 side), and an inner wire rope 41 b is connected to the connecting fitting 43.

  The nut bracket 44 is fixed to the bracket 42, and a screw shaft 45 is screwed to the nut bracket 44. A rotation handle 46 is attached to the top of the screw shaft 45. In addition, a connection fitting 43 is rotatably connected to the lower portion of the screw shaft 45.

  When the rotary handle 46 is rotated in one direction (for example, clockwise), the screw shaft 45 moves upward while rotating in one direction, and the inner wire rope 41b connected to the connection fitting 43 is pulled upward. When the inner wire rope 41b is pulled up in this way, the lower frame 22 and the drive unit 25 can be lifted upward, and the drive wheel 26 can be floated from the floor surface.

When the driving wheel 26 is lifted off the floor, the simple automatic guided vehicle 1 can be easily moved by being pushed by a human.
Therefore, when the simple automatic guided vehicle 1 deviates from the guidance route (when it has gone out of the course), when the human pushes the simple automatic guided vehicle 1 to move to the guidance route, The rotary handle 46 is rotated in one direction, and the driving wheel 26 is lifted from the floor surface.

When the rotary handle 46 is rotated in the other direction (for example, counterclockwise), the screw shaft 45 moves downward while rotating in the other direction, and pushes back the inner wire rope 41b connected to the connection fitting 43 downward. When the inner wire rope 41b is pushed back in this way, the lower frame 22 and the drive unit 25 descend, and further, the drive wheel 26 is pressed against the floor surface by being urged by the spring force of the compression coil spring 24.
When the simple automatic guided vehicle 1 is guided along the guide route, the inner wire rope 41b is pushed back to lower the lower frame 22 and the drive unit 25 downward, and the drive wheel 25 is moved to the floor by the compression coil spring 24. Keep pressed against the surface.

JP2004-249895 JP-A-7-33027 Reality 4-8064

  By the way, in order to lift the lower frame 22 and the drive unit 25 upward and to float the drive wheel 26 from the floor surface, the rotation handle 46 is rotated in one direction (for example, clockwise rotation). It was troublesome.

  As the lower frame 22 is pulled upward, the spring force that the compression coil spring 24 urges the lower frame 22 downward gradually increases. For this reason, as the lower frame 22 moves upward (as the lift height of the driving wheel 26 increases), the force acting downward on the lower frame 22 gradually increases, and the drag acting on the rotary handle 46 gradually increases. It becomes. Therefore, the force for rotating the rotary handle 46 is light in the initial period of rotation, but becomes heavy in the final period of rotation.

  An object of the present invention is to provide a wire rope operating mechanism capable of pulling up a wire rope with a simple operation and easily locking / unlocking in the pulled-up state.

The configuration of the present invention for solving the above problems is as follows.
A wire rope operating mechanism in which one end is connected to the other end of the wire rope connected to the operation target and performs pulling operation and pushing back operation on the wire rope,
It is arrange | positioned at the other end side of the said wire rope, It has a slide groove extended linearly along the pull-out direction of the said wire rope, and a fulcrum groove | channel extended along the direction which cross | intersects the extension direction of this slide groove And a plate having a contour curve periphery and a locking recess connected to the contour curve periphery on the periphery,
A slide pin inserted into the slide groove and slidably movable in the slide groove, and connected to the other end of the wire rope;
A fulcrum pin inserted into the fulcrum groove and slidably movable in the fulcrum groove;
An operation lever that is pivotally supported by the slide pin and the fulcrum pin, and has a lock pin long hole formed at a position opposite to the slide pin with the fulcrum pin interposed therebetween,
A lock bar slidably attached to the operation lever;
A spring interposed between the operation lever and the lock bar to urge the lock bar toward the plate;
Inserted into the lock bar and inserted into the lock pin long hole, and when the operation lever swings around the fulcrum pin, the slide pin has one groove end in the slide groove. A lock pin that rolls into contact with the contour curve periphery of the plate when positioned at a portion other than the plate, and that fits into the locking recess of the plate when the slide pin is positioned at one end of the slide groove;
It is slidably attached to the operation lever and the lock bar, and when pulled out in a direction away from the plate, by engaging the lock bar and pulling out the lock bar in a direction away from the plate, And an operating rod that can be extracted from the locking recess.

The configuration of the present invention is as follows.
An upper frame fixed to the cart of the automatic guided vehicle;
A drive unit having drive wheels;
A coupling mechanism that couples the drive unit to the upper frame in a state in which the drive unit is vertically movable while disposing the drive unit below the upper frame;
A wire rope operation mechanism for raising and lowering the drive unit in preparation for an automated guided vehicle having a spring that biases the drive unit downward,
An outer wire rope with one end of the inner wire rope connected to the drive unit;
A slide groove that is arranged on the other end side of the inner wire rope and extends linearly along the drawing direction of the inner wire rope, and a fulcrum groove that extends along a direction intersecting the extension direction of the slide groove And a plate having a contour curve periphery and a recess for locking connected to the contour curve periphery on the periphery,
A slide pin inserted into the slide groove and slidably movable in the slide groove, and connected to the other end of the wire rope;
A fulcrum pin inserted into the fulcrum groove and slidably movable in the fulcrum groove;
An operation lever that is pivotally supported by the slide pin and the fulcrum pin, and has a lock pin long hole formed at a position opposite to the slide pin with the fulcrum pin interposed therebetween,
A lock bar slidably attached to the operation lever;
A spring interposed between the operation lever and the lock bar to urge the lock bar toward the plate;
Inserted into the lock bar and inserted into the lock pin long hole, and when the operation lever swings around the fulcrum pin, the slide pin has one groove end in the slide groove. A lock pin that rolls into contact with the contour curve periphery of the plate when positioned at a portion other than the plate, and that fits into the locking recess of the plate when the slide pin is positioned at one end of the slide groove;
It is slidably attached to the operation lever and the lock bar, and when pulled out in a direction away from the plate, by engaging the lock bar and pulling out the lock bar in a direction away from the plate, And an operating rod that can be extracted from the locking recess.

In the present invention, when the lock pin provided on the spring-biased lock bar is fitted into the lock recess formed in the plate, the lock pin is automatically locked and the wire rope pulling state can be restrained.
By pulling out the operating rod in this locked state, it is possible to pull out the lock bar and thus the lock pin, so that the lock pin can be pulled out of the locking recess to easily release the locked state. And unlocking operation becomes extremely easy.

  The best mode for carrying out the present invention will be described below in detail based on examples.

  1 to 3 show a wire rope operating mechanism 100 according to an embodiment of the present invention. FIG. 1 shows a state in which the wire rope operating mechanism 100 is pushed down to the lowest end and the inner wire rope 41b is pulled out. FIG. 3 shows a state where the wire rope operation mechanism 100 is being pushed down, and FIG. 3 shows a state where the wire rope operation mechanism 100 is pulled up and the inner wire rope 41b is pushed back.

4A is a longitudinal sectional view of the wire rope operating mechanism (driving wheel lifting / lowering device) 100, and FIG. 4B is a sectional view taken along line XX in FIG. 4A.
FIG. 5 is an exploded view showing members of each part of the wire rope operating mechanism 100 in an exploded manner.

  The wire rope mechanism 100 according to the present embodiment is a simplified automatic guided vehicle 1 provided with a drive unit 20 as shown in FIGS. 7 to 10. The wire rope mechanism 41 has an outer wire rope 41 and a drive unit 25 via a lower frame 22. The present invention is applied to a driving wheel lifting / lowering device that pulls up.

  As shown in FIGS. 4A and 4B, the wire rope operation mechanism 100 of the present embodiment includes a pair of plates 110, a pair of operation levers 120, a single lock bar 130, and a pair of operation rods 140. And a pair of tension coil springs 150, one slide pin 201, one fulcrum pin 202, one lock pin 203, and two rod pins 204 and 205.

A slide groove 111 and a fulcrum groove 112 are formed in the plate 110 (see FIG. 5).
The plate 110 is attached to the hand handle 12 (see FIG. 7) of the simplified automatic guided vehicle 1 via the attachment member 300 (see FIG. 4A), and the slide groove 111 faces in the vertical direction. It becomes. In other words, the slide groove 111 extends in a straight line along the drawing direction of the inner wire rope 41b of the outer wire rope 41.

  The fulcrum groove 112 extends in an intersecting direction (substantially horizontal direction) with respect to the extending direction (vertical direction) of the slide groove 111. The groove shape of the fulcrum groove 112 does not extend linearly in the horizontal direction, but curves downward (toward the groove end 111a side of the slide groove 111) as it approaches the groove end 112a from the groove end 112b. Yes. The fulcrum groove 112 is curved downward as it approaches the groove end 112a from the groove end 112b, but may be bent downward as it approaches the groove end 112a from the groove end 112b.

  Further, a contour curve periphery 113 and a locking recess 114 connected to the contour curve periphery 113 are formed on the periphery of the plate 110.

  The operation lever 120 is formed with a slide pin hole 121, a fulcrum pin hole 122, a lock pin long hole 123, and a lever long hole 124 (see FIG. 5). The lock pin long hole 123 is formed at a position opposite to the slide pin hole 121 with the fulcrum pin hole 122 therebetween.

  The lock bar 130 has a lock pin hole 131 and a lock bar long hole 132 (see FIG. 5).

  The operation rod 140 is formed with rod holes 141 and 142 and a handle 143 (see FIG. 5).

  The tension coil spring 150 is interposed between the operation lever 120 and the lock bar 130, and urges the lock bar 130 toward the plate 110 (see FIG. 4B).

As shown in FIG. 4A, the slide pin 201 is inserted into the slide groove 111 of the plate 110 through the slide pin hole 121 of the operation lever 120. Rings 201a and 201b for retaining are attached to both ends of the slide pin 201.
In this way, the operation lever 120 is pivotally supported by the slide pin 201, and the slide pin 201 is slidable within the slide groove 111.
The other end of the inner wire rope 41b of the outer-attached wire rope 41 is connected to the slide pin 201. The other end of the outer sleeve 41a is fixedly supported by the plate 110.

As shown in FIG. 4A, the fulcrum pin 202 is inserted into the fulcrum groove 112 of the plate 110 through the fulcrum pin hole 122 of the operation lever 120. Rings 202 a and 202 b for retaining are attached to both ends of the fulcrum pin 202.
In this manner, the operation lever 120 is pivotally supported by the fulcrum pin 202, and the fulcrum pin 202 is slidable within the fulcrum groove 112.

As shown in FIG. 4A, the lock pin 203 is inserted into the lock pin long hole 123 of the operation lever 120 through the lock pin hole 131 of the lock bar 130. Bearings 203 a and 203 b are attached to both ends of the lock pin 203.
The lock pin 203 can be brought into rolling contact with the contour curve peripheral edge 113 of the plate 110 via the bearings 203a and 203b and can be fitted into the lock recess 114.

  The lock bar 130 slides on the operation lever 120 while allowing the lock pin 203 to move along the longitudinal direction in the lock pin long hole 123 of the operation lever 120 while allowing the slide to move. It is attached freely.

  The rod pins 204 and 205 are inserted into the rod pin holes 141 and 142 of the operation rod 140 and inserted into the lock bar long hole 132 of the lock bar 132 and the lever long hole 124 of the operation lever 120. Bearings 206a, 206b, 207a, and 207b are attached to both ends of the rod pins 204 and 205. The bearings 206a, 206b, 207a, and 207b are inserted into the lever long holes 124 and rotate.

  The operation rod 140 is allowed to slide in a range in which the rod pins 204 and 205 can move along the longitudinal direction in the long hole 132 of the lock bar 130 and the lever long hole 124 of the operation lever 120. 120 is slidably attached.

The operation state of the wire rope operation mechanism 100 configured as described above will be described.
When the drive unit 25 is raised and the drive wheel 26 is lifted from the floor, the wire rope operating mechanism 100 is pushed down and the inner wire rope 41b is pulled out (pulled up) as shown in FIG. Further, when the drive unit 25 is lowered and the drive wheel 26 is brought into contact with the floor surface, the wire rope operating mechanism 100 is pulled up and the inner wire rope 41b is pushed back as shown in FIG.

Here, the slide movement state of the slide pin 201 and the fulcrum pin 202 accompanying the swinging (pressing down, pulling up) operation of the wire rope operating mechanism 100 will be described.
(1) As shown in FIG. 3, when the wire rope operation mechanism 100 is pulled up to the upper limit position, the slide pin 201 is positioned at the groove end portion 111 a on the lower side of the slide groove 111, and the fulcrum pin 202 is , Located at the groove end 112 a on the right side of the fulcrum groove 112.
(2) When the wire rope operating mechanism 100 is swung from the upper limit position to the horizontal position, the slide pin 201 slides from the position of the groove end portion 111a on the lower side of the slide groove 111 to the position of the groove center. At the same time, the fulcrum pin 202 slides from the position of the right groove end 112a of the fulcrum groove 112 to the position of the left groove end 112b.
(3) When the wire rope operating mechanism 100 is swung from the horizontal position to the lower limit position, the slide pin 201 slides from the groove center position of the slide groove 111 to the upper groove end portion 111b. The fulcrum pin 202 slides from the position of the left groove end 112b of the fulcrum groove 112 to the position of the right groove end 112a to be in the state shown in FIG.
(4) When the wire rope operation mechanism 100 is swung from the lower limit position to the upper limit position, the slide pin 201 slides in the slide groove 111 and the fulcrum pin 202 moves to the fulcrum groove 112, as described above. Slide inside.

  When the drive unit 25 is raised to lift the drive wheel 26 from the floor surface, the operator holds the handle 143 of the operation rod 140 with his hand and pushes down the wire rope operation mechanism 100 in the state shown in FIG. . At this time, as shown by a dotted line in FIG. 3, the operation rod 140 is pulled out from the operation lever 120 and the lock bar 130, and the wire rope operation mechanism 100 is lengthened and pushed down.

  When the wire rope operating mechanism 100 is pushed down in this way (when it is swung downward), the lock pin 203 moves downward while rolling on the contour curve peripheral edge 113 of the plate 110 via the bearings 203a and 203b. Go to.

When the wire rope operating mechanism 100 is pushed down in this way, the fulcrum pin 203 starts from the right groove end 112a and reaches the left groove end 112b in the fulcrum groove 112 as described above. The groove end 112b moves toward the right groove end 112a.
At this time, the slide pin 201 moves in the slide groove 111 from the lower groove end portion 111a toward the upper groove end portion 111b.

  In the period during which the fulcrum pin 202 moves from the left groove end 112b toward the right groove end 112a in the fulcrum groove 112 (period in the state shown in FIG. 2), the pulling force acting on the inner wire rope 41b. F1 increases as the compression coil spring 24 contracts. The pull-down force F1 is a force F2 acting on the operation lever 120 along the longitudinal direction of the operation lever 120 from the slide pin 201 side toward the fulcrum pin 202 side.

This force F2 acts on the fulcrum pin 202 as a force F3 that pushes the fulcrum pin 202 back in the direction toward the left groove end 112b.
If the fulcrum pin 202 slips to the left groove end 112b side by the force F3, the tip of the operation rod 140 becomes a force F4 that rotates the operation rod 140 upward, and the drag of the force that the operator pushes down. And it takes a great deal of force to push it down.

In this embodiment, since the fulcrum groove 112 is curved, the force F2 acting in the longitudinal direction of the operation lever 120 is supported by the curved portion of the fulcrum groove 112, so that the force F3 hardly occurs. As a result, the force F4 serving as the drag of the operator is not generated.
As a result, even in the final period in which the drive unit 25 is pulled up, the force that pushes down the operation lever 120 is the force that pulls up the inner wire rope 41b as it is, and does not become a useless force component. Accordingly, even in the final period in which the drive unit 25 is lifted up, the force for pushing down the operation lever 120 may be almost the same as that in the initial period in which the drive unit 25 is lifted up. That is, even in the final period in which the inner wire rope 41b is pulled up, the inner wire rope 41b can be pulled up with a large operating force by simply depressing the operating rod 140 and the operating lever 120.

  If the fulcrum groove 112 is not curved and has a shape extending linearly along the horizontal direction, the fulcrum pin 202 easily slips due to the force F3, and a large drag F4 is generated. A large force is required to push down the operation rod 140.

Eventually, since the fulcrum groove 112 is curved, most of the force F2 is supported by the fulcrum groove 112, and almost no drag force F4 is generated.
As shown in FIG. 6, the fulcrum groove 112 may be bent. In this way, the force F2 is completely supported by the bent portion of the fulcrum groove 112, and the drag F4 is not generated at all.

  The operation rod 140 is further pushed down from the state shown in FIG. 2, and when the operation rod 140 reaches the lower limit position as shown in FIG. 3, the lock pin 203 is fitted into the locking recess 114 of the plate 110. This is because the lock bar 130 is urged to the plate 110 side by the tension coil spring 150, so that the lock pin 203 inserted through the lock bar 130 is fitted into the locking recess 114 by the spring force. .

When the lock pin 203 is thus fitted into the locking recess 114, the operation rod 140 and the operation lever 120 are restrained in this locked position.
Therefore, the state where the drive unit 25 is pulled up and the drive wheel 26 is floated from the floor surface can be reliably ensured.

In order to lower the driving wheel 26 that has been lifted from the floor surface, it is first necessary to release the above-described locked state. To release the locked state, the operating rod 140 is pulled out in the direction away from the plate 110 along its longitudinal direction.
When the operation rod 140 is pulled out in this way, the rod pin 205 inserted through the operation rod 140 abuts and engages with one groove end portion (the groove end portion on the operation rod side) of the lock bar long hole 132 of the lock bar 130. The lock bar 130 can be pulled out in a direction away from the plate 110. As a result, the lock pin 203 is pulled out from the lock pin recess 114.

  Thus, the locked state can be released by a simple operation of pulling out the operating rod 140, and the operation for unlocking is easy.

  When the locked state is released, the operating rod 140 can be lifted upward and returned to the state of FIG. 1 through the state of FIG. By returning from the state of FIG. 3 to the state of FIG. 1, the inner wire rope 41b is pushed back, the drive unit 25 is lowered, and the drive wheel 26 is grounded to the floor surface.

  In the above embodiment, the wire rope operation mechanism of the present invention is used as a driving wheel lifting device of a simple automatic guided vehicle. However, the wire rope operation mechanism of the present invention is a wire rope whose one end is connected to an operation object. It is connected to the other end, and can be employed in various devices as an operation mechanism that pulls and pushes back the wire rope.

The block diagram which shows the wire rope operation mechanism which concerns on the Example of this invention. The block diagram which shows the wire rope operation mechanism which concerns on the Example of this invention. The block diagram which shows the wire rope operation mechanism which concerns on the Example of this invention. Sectional drawing which shows the wire rope operation mechanism which concerns on the Example of this invention. The exploded view which shows the components which comprise the wire rope operation mechanism which concerns on the Example of this invention. The block diagram which shows the modification of a fulcrum groove | channel. The side view which shows a simplified automatic guided vehicle. The rear view which shows a simplified automatic guided vehicle. The side view which shows a drive unit. The rear view which shows a drive unit. The block diagram which shows the conventional driving wheel raising / lowering apparatus.

Explanation of symbols

41 Wire Rope with Outer 41a Outer Sleeve 41b Inner Wire Rope 100 Wire Rope Operating Mechanism (Drive Wheel Vertical Device)
110 plate 111 slide groove 111a, 111b groove end 112 fulcrum groove 112a, 112b groove end 113 contour peripheral edge 114 locking recess 120 operation lever 121 slide pin hole 122 fulcrum pin hole 123 lock pin hole 124 lever long hole 130 lock Bar 131 Lock pin hole 132 Lock bar long hole 140 Operation rod 141, 142 Rod pin hole 143 Handle 150 Tensile coil spring 201 Slide pin 201a, 201b Ring 202 Support pin 202a, 202b Ring 203 Lock pin 203a, 203b Bearing 204, 205 Rod pin 206a, 206b, 207a, 207b Bearing 300 Mounting member

Claims (2)

A wire rope operating mechanism in which one end is connected to the other end of the wire rope connected to the operation target and performs pulling operation and pushing back operation on the wire rope,
It is arrange | positioned at the other end side of the said wire rope, It has a slide groove extended linearly along the pull-out direction of the said wire rope, and a fulcrum groove | channel extended along the direction which cross | intersects the extension direction of this slide groove And a plate having a contour curve periphery and a locking recess connected to the contour curve periphery on the periphery,
A slide pin inserted into the slide groove and slidably movable in the slide groove, and connected to the other end of the wire rope;
A fulcrum pin inserted into the fulcrum groove and slidably movable in the fulcrum groove;
An operation lever that is pivotally supported by the slide pin and the fulcrum pin, and has a lock pin long hole formed at a position opposite to the slide pin with the fulcrum pin interposed therebetween,
A lock bar slidably attached to the operation lever;
A spring interposed between the operation lever and the lock bar to urge the lock bar toward the plate;
Inserted into the lock bar and inserted into the lock pin long hole, and when the operation lever swings around the fulcrum pin, the slide pin has one groove end in the slide groove. A lock pin that rolls into contact with the contour curve periphery of the plate when positioned at a portion other than the plate, and that fits into the locking recess of the plate when the slide pin is positioned at one end of the slide groove;
It is slidably attached to the operation lever and the lock bar, and when pulled out in a direction away from the plate, by engaging the lock bar and pulling out the lock bar in a direction away from the plate, A wire rope operation mechanism comprising: an operation rod capable of extracting the lock pin from the locking recess. An upper frame fixed to the cart of the automatic guided vehicle;
A drive unit having drive wheels;
A coupling mechanism that couples the drive unit to the upper frame in a state in which the drive unit is vertically movable while disposing the drive unit below the upper frame;
A wire rope operation mechanism for raising and lowering the drive unit in preparation for an automated guided vehicle having a spring that biases the drive unit downward,
An outer wire rope with one end of the inner wire rope connected to the drive unit;
A slide groove that is arranged on the other end side of the inner wire rope and extends linearly along the drawing direction of the inner wire rope, and a fulcrum groove that extends along a direction intersecting the extension direction of the slide groove And a plate having a contour curve periphery and a recess for locking connected to the contour curve periphery on the periphery,
A slide pin inserted into the slide groove and slidably movable in the slide groove, and connected to the other end of the wire rope;
A fulcrum pin inserted into the fulcrum groove and slidably movable in the fulcrum groove;
An operation lever that is pivotally supported by the slide pin and the fulcrum pin, and has a lock pin long hole formed at a position opposite to the slide pin with the fulcrum pin interposed therebetween,
A lock bar slidably attached to the operation lever;
A spring interposed between the operation lever and the lock bar to urge the lock bar toward the plate;
Inserted into the lock bar and inserted into the lock pin long hole, and when the operation lever swings around the fulcrum pin, the slide pin has one groove end in the slide groove. A lock pin that rolls into contact with the contour curve periphery of the plate when positioned at a portion other than the plate, and that fits into the locking recess of the plate when the slide pin is positioned at one end of the slide groove;
It is slidably attached to the operation lever and the lock bar, and when pulled out in a direction away from the plate, by engaging the lock bar and pulling out the lock bar in a direction away from the plate, A wire rope operation mechanism comprising: an operation rod capable of extracting the lock pin from the locking recess.

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