JP2649261B2 - Bogie shock absorber - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a shock absorbing device for a bogie, and more particularly, to a shock absorbing device for a bogie that is moved by being drivingly connected to a drive transmission member of an assembly line and collides with an obstacle. The present invention relates to an impact damping device for a bogie, in which a drive connection is released simultaneously with damping an impact.

<Prior Art and its Defects> For example, in a copier assembly line, a plurality of work carts are moved from an assembly start area to a product unloading area through a plurality of assembly areas and adjustment areas along an endless movement path. .
In the assembly start area, a frame body of the copying machine (a frame body on which various components are not mounted) is placed on a carriage. Various parts are mounted on the frame body while the carriage is moved through each mounting area, and various parts are mounted on the frame body while the carriage is moved through each adjustment area. Various adjustments are performed. When the cart is moved to the product carrying-out area in this way, substantially all the components are assembled to the frame body on the cart, and the adjustment for the various components assembled is completed.
In the product unloading area, the copier as an assembled product is unloaded from the cart and packed in a packaging box as required.

In the assembly line as described above, when the working time in the assembly area and the adjustment area is relatively long, the carriage is intermittently moved instead of moving the carriage continuously. And, when the working time in the assembly area and the adjustment area is not constant, the drive release means is arranged corresponding to each of the assembly area and the adjustment area, and during the work, the movement of the bogie is stopped by the drive release means, After the work is completed, the bogie is connected again and moved. When the truck is moved in this manner, there is a risk that the subsequent truck will collide with the truck stopped in the assembly area or the adjustment area, and in such a collision, assembling or adjusting the copier as required. Difficult to do. Further, it is not preferable in terms of safety if the moving truck collides with the worker, and if the truck collides with an obstacle in the factory, the cart itself may be damaged.

Therefore, if the moving truck collides with an obstacle such as another bogie, the impact is buffered and the drive connection is released to stop the movement. Need to be prevented. For this purpose, it is desired to provide a bogie with an impact buffering device including a drive releasing means for stopping the movement thereof. However, it is strongly desired that the entire mechanism of the impact buffering device is simple and can be manufactured at relatively low cost. Requested.

<Object of the Invention> The present invention has been made based on the above facts, and the main object of the present invention is to buffer a shock when a moving trolley collides with an obstacle such as another trolley and to release the drive connection at the same time. It is an object of the present invention to provide a bogie shock absorbing device which can be manufactured at a relatively low cost and can be manufactured at a relatively low cost.

<Summary of the Invention> According to the present invention, there is provided a connecting member releasably connected to an engaging member fixed to a drive transmitting member that is provided on a bogie main body and that is moved in a predetermined direction. The revolving structure is provided on a revolving structure mounted on the bogie main body, and the revolving structure has a coupling position where the coupling member is drivingly coupled to the drive transmission member by the coupling member being located on a movement path of the engagement portion. The connecting member is pivotable between a release position where the driving connection of the connecting member to the drive transmitting member is released by moving the connecting member upward from the movement path of the engaging portion. A bumper member biased by means to project forward from the front end of the bogie main body, and mounted so as to be relatively movable with respect to the front end of the bogie main body against the urging force of the spring means. , The relative movement of the bumper member A transmission mechanism for transmitting to the revolving body, the transmission mechanism comprising: a shaft that rotates in conjunction with the relative movement of the bumper member; an operation lever fixed to the shaft; and a tip of the operation lever. Including a roller rotatably mounted on the
The impact damping of a bogie, wherein the relative movement of the bumper member causes the roller of the operating lever to act from below the revolving body to pivot the revolving body from the connection position to the release position. Device is provided.

In the above-described bogie shock absorbing device, when the bogie main body collides with an obstacle such as another bogie, the bumper member is relatively moved against the front end of the bogie main body against the urging force of the spring means. Due to such a relative movement of the bumper member, a roller rotatably mounted on the tip of the operating lever acts from below the revolving structure to rotate the revolving structure from the connection position to the release position. When the revolving structure is swung from the connection position to the release position, the drive connection of the connection member provided on the bogie main body to the drive transmission member is released, and the bogie main body stops. As a result, the impact when the truck collides with the obstacle can be buffered, and at the same time, the drive connection can be surely released and the truck can be stopped, so that it is possible to prevent adverse effects due to the occurrence of impact and the like. Moreover, the respective structures of the shock absorbing mechanism including the bumper member and the drive connection releasing mechanism are simple, so that the entire structure of the shock absorbing device is simple and can be manufactured at relatively low cost.

<Specific Example> Hereinafter, a detailed description will be given with reference to the accompanying drawings.

FIG. 1 shows a part of an assembly line using a bogie equipped with a specific example of an impact damping device according to the present invention (including a drive disconnection mechanism for stopping the movement of the bogie);
The illustrated assembly line is provided with guide means 2 extending as required, and a work cart indicated by reference numeral 4 is moved as required while being guided by the guide means 2. The trolley 4 includes a rectangular trolley main body 6, and a lift (not shown) is mounted on the trolley main body 6 via a lift mechanism (not shown) so as to be vertically movable. A work table 8 having a shape is rotatably mounted. A caster 12 having a rotatable roller 10 is mounted on the four corners at the bottom of the carriage body 6. These four casters 12 are composed of swivel casters which are rotatable around an axis extending in the vertical direction and are rotatable. Further, an operation unit 14 is mounted on a lift (not shown), and the operation unit 14 is provided with an operation panel 16 on which various operation switches are arranged. This trolley 2 is substantially the same as that disclosed in the specification and drawings of a patent application (name: work trolley) filed on July 20, 1988 by one of the applicants (Mita Kogyo Co., Ltd.). Therefore, see the above specification and drawings for details.

Further, the guide means 2 has a base plate 18 fixed to the floor of a factory or the like, and a pair of guide members 20 and 22 fixed to the upper surface of the base plate 18. Referring also to FIG. 6, in an embodiment, the guide members 20 and 22 include chain guide portions 20a and 22a extending substantially vertically upward from the upper surface of the base plate 18.
And roller guide portions 20b and 22b provided at the upper end portions of the chain guide portions 20a and 22a, and a guide groove having an open upper surface is defined therebetween.

A drive chain 24 (constituting a drive transmission member) for moving the carriage 4 is disposed between the pair of guide members 20 and 22. Referring to FIGS. 2 and 3 together with FIG. 6, the illustrated drive chain 24 is endless, and a pair of inner link plates 26 and a pair of outer link plates 28 are alternately connected. A pair of inner link plates 26 and a pair of outer link plates 28 adjacent to each other
A roller 32 is rotatably mounted with a pin 30 fitted between a pair of inner link plates 26 so as to be rotatable. Further, a plurality of specific pairs of outer link plates 28 (for example, outer link plates at intervals of five) are provided with an engagement claw 34 as an engagement member and a support roller 42. That is, an engaging claw 34 projecting upward is fixed to one of the upper sides of the pair of outer link plates 28 by means such as welding. The drive chain 24
An arrow 36 (first) is actuated by the action of a drive source such as an electric motor.
(FIG. 2, FIG. 2), and an arc-shaped concave portion 34a is formed on the front surface of the engaging claw 34 in the moving direction as viewed in the moving direction (FIG. 3). The concave portion 34a corresponds to the peripheral shape of the connecting pin described later, and acts so as to engage with the connecting pin and push in the direction indicated by the arrow 36. On the other side, which is located below the pair of outer link plates 28, a mounting block 38 projecting downward is fixed by means such as welding, and a support roller 42 is attached to the mounting block 38 via a pin 40. It is mounted rotatably. In such a drive chain 24, as shown in FIG.
When 24 moves between guide members 20 and 22, rollers 32
Is guided by the inner surfaces of the chain guides 20a and 22a and moves, and the support roller 42 moves in contact with the upper surface of the base plate 18.

The carriage 4 and the drive chain 24 are drivingly connected as follows. Referring to FIG. 4 to FIG.
A revolving body indicated by reference numeral 44 is provided at the front end of the bogie main body 6. The revolving superstructure 44 includes a pair of main body plates 46 and 48 arranged at intervals in the vertical direction, and an arm 50 arranged between the pair of main body plates 46 and 48. A block (not shown) is fixed between one end of the pair of body plates 46 and 48. On the other hand, a mounting bracket 52 is fixed to the left front end (upper right end in FIGS. 1 and 4) of the bogie main body 6, and is attached to the mounting bracket 52 in the width direction (vertical direction in FIGS. 1 and 4; A pair of bracket pieces 54 are provided at intervals in a direction perpendicular to the paper surface in FIG. 5 and in a left-right direction in FIG. 6, and between the bracket pieces 54 via a shaft member 56 between the main body plates 46 and 48. The provided block piece (not shown) is pivotally mounted. The arm 50 is provided with a pair of body plates 46 and 48.
Is pivotally connected to a middle portion in the longitudinal direction via a pin 58 extending in the vertical direction. As is clearly shown in FIG. 6, the arm 50 has a horizontal base 60a extending substantially horizontally from the main body plates 46 and 48, a vertical intermediate portion 60b extending substantially vertically upward from one end of the horizontal base 60a, and an upper end of the vertical intermediate portion 60b. Has a horizontal tip portion 60c extending substantially horizontally from the horizontal tip portion 6c.
A guided roller 66 and a connecting pin 68 (constituting a connecting member) are attached to 0c by bolts 62 and nuts 64. Guided roller 66 has spacer 70 on the lower surface of horizontal tip 60c.
The connecting pin 68 is disposed below the guided roller 66 and protrudes downward. The guided rollers 66 are disposed corresponding to the roller guide portions 20b and 22b of the guide means 2, and move while being guided by the inner surfaces of the roller guide portions 20b and 22b. The connecting pin 68 is engageable with a plurality of engaging claws 34 provided on the drive chain 24, and is driven by the drive chain 24 by releasably engaging with any of the engaging claws 34. Be linked.

On the front side and the rear side of the arm 50, buffer means 72 and 74 are provided. In a specific example, a rectangular projecting piece 76 is integrally provided at an intermediate portion of the arm 50, and one buffer means 72 is disposed in front of the projecting piece 76, and the other buffer means 74 is provided on the rear side. Are arranged. The buffer means 72 is constituted by a cylinder type shock absorber known per se, and is mounted on a mounting plate 78 mounted between the other end portions of the pair of main body plates 46 and 48. This shock absorbing means 72 acts on the above-mentioned protruding piece 76 when the impact in the direction shown by the arrow 80 (FIG. 4) acts on the arm 50 at the time of starting the carriage 4 or the like, thereby damping the impact. Further, the other buffering means 74 is formed of a rubber member which can be formed, for example, of synthetic rubber, and is attached to an attaching member 82 attached to the upper surface of one end of the main body plate 46. Such buffer means 74 is indicated by an arrow 84 (FIG. 4).
When the impact in the direction shown by the arrow acts on the arm 50, it acts on the protruding piece 76 to buffer the impact. A hanging piece 86 hanging downward is fixed to a vertical intermediate portion 60b of the arm 50, and a roller 90 is rotatably mounted on a lower end of the hanging piece 86 via a short axis 88.

The revolving unit 44 described above is moved in the width direction (that is, the guide unit 2).
Shaft member 56 extending in a direction substantially perpendicular to the guide groove of
1, 4 and 6 (the position shown by the solid line in FIG. 5) and the release position shown by the two-dot chain line in FIG. In the connection position, the connection pin provided on the arm 50 of the revolving unit 44
The reference numeral 68 is located in the guide groove of the guide means 2 and protrudes into the movement path of the engagement claw 34 of the drive chain 24. The movement of the drive chain 24 causes the engagement claw 34 and the connecting pin 68 to be releasably engaged.
In this connection position, the guided roller 66 is positioned between the roller guide portions 20b and 22b in the guide means 2. On the other hand, when the revolving unit 44 is moved to the release position, the guided roller 66 and the connecting pin 68 move upward, the proposed roller 66 comes off from the guide groove of the guiding means 2 and the connecting pin 68 engages with the driving chain 24. Retreats from the movement path of the dovetail 34, and the connecting pin
The engagement between 68 and the engagement claw 34 is released. At this time, the connecting pin 68 is located between the roller guide portions 20b and 22b without completely detaching from the guide groove of the guide means 2, and the carriage 4 does not move off the assembly line. In a specific example, the revolving superstructure 44 can be further revolved beyond the release position to an upper position shown by an arrow 92 (FIG. 5) to a detached position (not shown). In such a disengaged position, both the guided roller 66 and the connecting pin 68 provided on the revolving unit 44 are disengaged from the guide groove of the guide means 2.

In the specific example, a connection position holding means 94 for holding the revolving unit 44 at the connection position is provided. Referring mainly to FIG. 5, the illustrated connection position holding means 94 includes a first holding means 96 provided outside and a second holding means 98 provided inside. A support plate 100 is mounted on the front end of the bogie main body 6, and a mounting block piece 102 is fixed to the support plate 100. A first holding means 96 and a second holding means 98 are mounted on the mounting block piece 102. Have been. The first holding means 96 has a screw shaft 104 screwed to the mounting block piece 102 in a height-adjustable manner. A locking nut 106 is screwed to the screw shaft 104 to cover the tip of the screw shaft 104. Fit and lock nut 106 and body plate 4 of revolving unit 44
A coil spring 108 is interposed between the eight. Therefore, by changing the position of the locking nut 106, the biasing force of the coil spring 108 acting on the rotating body 44 can be adjusted.
Note that the nut 110 is for fixing. The second holding means 98 has a screw shaft 112 on which the mounting block piece 102 is screwed so as to be adjustable in height, and a rubber member 114 formed of, for example, synthetic rubber at the tip of the screw shaft 112. Is provided. Note that the nut 116 is also for fixing. The first holding means 96 (particularly the coil spring 108) and the second holding means 96
The holding means 98 (particularly the rubber member 114) acts on the lower surface of the revolving body 44, and as can be understood from FIG.
Function mainly as a buffer, and the second holding means 98
Functions mainly for positioning for holding the revolving unit 44 at the connection position. Further, as will be easily understood, the revolving body 44 pivots downward toward the connection position and the first
When it comes into contact with the holding means 96 and the second holding means 98, the impact due to such contact is buffered by the coil spring 108 and the rubber member 114.

In a specific example, a guided unit 118 is also provided at the rear end of the bogie main body 6 so that the bogie 4 is reliably moved along the guide groove of the guiding unit 2. Referring to FIG. 7 together with FIG. 1, the illustrated guided means 118 includes a first member 120 attached to the rear end of the bogie main body 6 and a pin 122 connected to a distal end of the first member 120. And a second member 124 mounted to be pivotable about an axis extending in the front-rear direction. A plate 126 is fixed to the lower surface of the distal end of the first member 120, and the plate 126 extends to the base of the second member 124.
A substantially triangular contact piece 128 is fixed to the upper surface of the base of the second member 124. Further, the distal end of the second member 124 is provided with a spacer 134 by a bolt 130 and a nut 132.
The guided roller 136 is rotatably mounted via the.
With this configuration, when the second member 124 is turned clockwise as indicated by arrow 138 to the operating position indicated by the solid line in FIG. 7, its base comes into contact with the upper surface of the plate piece 126, and thus the second The member 124 is held in the working position. In such an operative position, the second member 124 is the first member 1
The guide roller 136 extending substantially horizontally following the roller 20 is located between the roller guide portions 20b and 22b of the guide means 2 (at this time, the guide roller 136 is connected to the drive chain 24). Is located above the engagement claw 34 provided on the
34 does not engage). On the other hand, when the second member 124 is turned in the counterclockwise direction shown by the arrow 140 to the detached position shown by the two-dot chain line in FIG. 7, the contact piece 128 comes into contact with the upper surface of the first member 120, and The second member 124 is held at the detached position. In such a disengaged position, the second member
Reference numeral 124 extends inclining inward, and the guided roller 136 provided at the tip thereof is separated from the guide groove of the guide means 2. still,
Since the guided means 118 is disposed at the rear end of the bogie main body 6 (particularly at the rear end on the side opposite to the lower side in FIG. 1 where the worker is located), the worker Direct second
It is not easy to turn the member 124 to be positioned in the working position or the detached position. Therefore, it is desirable to move the second member 124 to the above-mentioned operation position or the above-mentioned separation position by using a bar-shaped tool having a bent front end portion, that is, a dedicated tool for line-out.

Referring to FIG. 1 again, the above-mentioned assembly line is provided with a power supply mechanism for supplying a current to the carriage 4 moving along the guide means 2. The illustrated power supply mechanism includes a power supply unit 142 provided along the guide unit 2 and a power collection unit 144 provided on the bogie main body 6. Power supply means 142
Has a power supply rail 146, and the power supply rail 146 is covered by a cover member 148 on the other surface except the surface facing the carriage 4. The current collecting means 144 is attached to the first arm 150 mounted on the bogie main body 6 and the front end of the first arm 150 so as to be pivotable in the front-rear direction around an axis extending in the vertical direction via a pin. A current collecting terminal 156 is attached to a distal end of the second arm 152 via a current collecting arm 154. When the second arm 152 is in the operating position shown in FIG.
When the second arm 152 is pivoted rearward as indicated by arrow 158 to a non-operating position (not shown), the electrical connection between the current collecting terminal 156 and the power supply rail 146 is released. You. This power supply mechanism is disclosed in the specification and drawings of a patent application (name: power supply mechanism in an assembly line) filed on July 12, 1988 by one of the present applicants (Mita Kogyo Co., Ltd.). Substantially the same, so refer to the above specification and drawings for details.

In a specific example, the drive release means 16 shown in FIGS. 8 and 9 correspond to a predetermined area in the assembly line, that is, a work area such as an assembly area or an adjustment area where the carriage 4 is temporarily stopped.
0 is provided. The drive release means 160 shown in FIG.
A release plate 164 is provided which extends in the direction of movement of the carriage 4 shown in FIG. 2 (FIGS. 1 and 8) (see also FIG. 4). The release plate 164 is disposed adjacent to the guide member 22, and is provided with an inclined guide portion 166a that is inclined upward and extends in a direction indicated by an arrow 162, and a horizontal action portion that extends substantially horizontally following the inclined guide portion 166a. 166b, and a blocking portion 166c extending substantially vertically upward at one end of the horizontal action portion 166b. As shown by a two-dot chain line in FIG. The section 166a and the horizontal action section 166b are moved.
One end (left end in FIGS. 8 and 9) of the release plate 164 is pivotally connected to the base 170 via a link member 168, and the other end (right end in FIGS. 8 and 9). Is pivotally connected to the base 170 via a link member 172. That is, one ends of the link members 168 and 172 are attached to the bracket 174 attached to the lower surface of the release plate 164.
And 176 are pivotally connected via pins, and the other ends thereof are pivotally connected via pins to brackets 178 and 180 mounted on the upper surface of the base 170. A cylinder mechanism 182 such as a pneumatic cylinder mechanism is further connected to one end of the release plate 164. In a specific example, the cylinder body 184 of the cylinder mechanism 182 is pivotally connected to a support member 186 fixed to the base 170 via a pin, and its output rod 187 is attached to a bracket 188 attached to the lower surface of the release plate 164. It is pivotally connected via a pin. With such a configuration, when the cylinder mechanism 182 is contracted, the release plate 164 is positioned at the raised position indicated by the solid line in FIG. 8 (the position also illustrated in FIG. 9). In this raised position, the release plate
The upper part of the inclined guide part 166a at 164, the horizontal action part 166b and the blocking part 166c protrude into the movement path of the roller 90 of the bogie 4.
On the other hand, when the cylinder mechanism 182 is extended, the link members 168 and 172 are pivoted clockwise in FIG. 8, and the release plate 164 is located at the lowered position shown by the two-dot chain line in FIG. In such a lowered position, the release plate 164
, Ie, the inclined guide portion 166a, the horizontal action portion 166b, and the blocking portion 166c retreat downward from the movement path of the roller 90, and thus the release plate 164 does not act on the roller 90.
In the specific example, as shown in FIG. 8, the link member 168 is longer than the other link member 172. Therefore, in the raised position, the horizontal action portion 166b of the release plate 164 is substantially In the lowered position, the horizontal action portion 166b of the release plate 164 extends downward from one end to the other end, whereby the blocking portion 166c is moved sufficiently downward, and the blocking portion 166c is moved downward. 166c rolls
Acting on the 90 is reliably prevented.

In a specific example, a downward movement preventing means for preventing the release plate 164 from moving downward beyond the above-mentioned downward position is provided. The illustrated downward movement preventing means is composed of a bolt 190 screwed to the base 170 and acts on the lower surface of the other end of the release plate 164 to prevent the release plate 164 from lowering. Note that the lowering position of the release plate 164 can be adjusted by changing the height of the bolt 190.

Below the release plate 164, a switch means 192 for extending the cylinder mechanism 182 is provided. The illustrated switch means 192 switches a switching valve for supplying a pressurized fluid such as compressed air to the cylinder mechanism 182 when activated, whereby the cylinder mechanism 182 is extended. The switch means 192 is mounted on the base 170. In addition, an operating member 196 is provided in association with the switch means 192. A pair of support members 198 and 200 are attached to both ends of the base 170. On the other hand, mounting blocks 202 and 204 are fixed to the upper ends of both ends of the action member 196, and these mounting blocks 202 and 204 are pivotally mounted on the support members 198 and 200 via a short axis. Therefore, as shown in FIG. 9, the operating member 196 is in the non-operating position indicated by the solid line about the short axis (in this non-operating position, the operating member 196 is connected to the detecting portion 194 of the switch means 192)
Does not act) and the action position indicated by the two-dot chain line (in such an action position, the action member 196 is connected to the switch means 1).
The detection unit 194 of the 92 is pressed to be in the operation state). In the specific example, in response to the horizontal operation portion 166b of the release plate 164 extending over a predetermined range, the operation member 196 also extends from substantially one end of the release plate 164 to substantially the other end thereof. Roller 90 release plate 164
The transmission lever described below acts on the operation member 196 at any position of the horizontal operation portion 166b.

As shown in FIG. 10, the carriage 4 is provided with an operation member 206 and a transmission means 208 for turning the operation member 196 toward the operation position. At the front end of the bogie main body 6, a front auxiliary frame 210 protruding forward is provided.
The front auxiliary frame 210 has walls 212 and 214 spaced apart in the front-rear direction, and these walls 212 and 214
(Connect one end of walls 212 and 214) and connecting member 218
And 220, and one wall 214 is fixed to the front surface of the bogie main body 6. The operating member 206 is provided at the other end of the walls 212 and 214, and mounting portions 224 provided at both ends of the operating portion 222 are pivotally connected to the walls 212 and 214 via a shaft member 226. The operation member 206 is disposed at the bottom of the bogie main body 6 at the right front end, so that the operator can step on the operation unit 222 with his / her feet. It is to be noted that the operation member may be arranged in the operation unit 14, for example, so that the operator can operate the operation unit by hand. The transmission means 208 includes a transmission wire 227 and a transmission lever 228. A projecting piece 230 is fixed to the outer surface of the wall 216 of the front auxiliary frame 210, and a transmission lever 228 is pivotally mounted on the projecting piece 230 via a pin 232. One end of the transmission lever 228 projects outward through an opening formed in the wall 216, and this one end acts on the operation member 196. The screw shaft 22 screwed to one end of the transmission lever 228 and the connecting member 218
A coil spring 231 is mounted between the coil spring 9 and the coil spring 9. The coil spring 231 biases the transmission lever 228 counterclockwise in FIG. 10, and holds the transmission lever 228 in the position shown in FIG. 10 by the other end abutting against the inner surface of the wall 216. The transmission wire 227 is composed of a metal wire covered by a holding tube, and one end of the metal wire is
(Specifically, a connecting member 233 mounted on one mounting portion 224)
And the other end is connected to the other end of the transmission lever 228 located in the front auxiliary frame 210.
With this configuration, when the operation portion 222 of the operation member 206 is stepped on with a foot, the transmission lever 228 is pivoted outward as indicated by an arrow 234 via the transmission wire 227 against the biasing action of the coil spring 231. It acts on the working member 196 in the non-working position.
In the specific example, the transmission wire 227 is appropriately fixed to the connection members 218 and 220 by a mounting band (not shown).

The cart 4 further includes an impact buffering mechanism as shown in FIGS. 10, 11 and 12, and a drive connection releasing mechanism (the revolving body 44, the arm 50, the connection pin 68, a first Axis 24
8, working lever 282, roller 284, etc.). The illustrated mechanism includes a bumper member 240 provided at the front end of the bogie main body 6. The bumper member 240 is formed of a rod-shaped member, extends over substantially the entire width of the bogie main body 6, and is preferably covered with an elastic member such as a rubber member to buffer an impact at the time of abutment. The bumper member 240 is mounted movably in the front-rear direction (vertical direction in FIG. 10, and left-right direction in FIGS. 11 and 12) of the bogie main body 6, and the relative movement of the bumper member 240
It is transmitted to the revolving superstructure 44 via 42. That is, in the specific example, a pair of support brackets 244 and 246 are provided on the upper surfaces of the connection members 218 and 220 at an interval in the front-rear direction, and a pair of support brackets 244 and 246 is provided between the front support brackets 244 and 246 via a bearing member. One shaft 248 is rotatably supported, and a second shaft 250 is rotatably supported between support brackets 244 and 246 on the rear side via a bearing member. First axis 2
48 and one end of the second shaft 250 (right end in FIG. 10)
Protrudes through the support bracket 246, and one end of link members 252 and 254 is pivotally attached to these protruding ends. One end of the link members 256 and 258 is also pivotally mounted on an intermediate portion (a portion between the support brackets 244 and 246) between the first shaft 248 and the second shaft 250.
On the other hand, a pair of connecting rods 260 and 262 are fixed to the bumper member 240 at intervals in the longitudinal direction, and the connecting rods 260 and 262 extend rearward. One connecting rod 260 is disposed corresponding to the link members 252 and 254, and is rotatably connected to the other end of the link members 252 and 254 via a pin (the other end of the connecting rod 260 has a concave portion). Is defined, and the connecting rod 260 is located in the recess.) The other connecting rod 262 is connected to the link member 256 and the link member 256.
The link members 256 and 258
Are rotatably connected to the other end of each of them via a pin (these other ends also have recesses defined therein, and the connecting rod 262 is located in the recesses). In connection with the connecting rods 260 and 262, rod stopping means 264 is provided. The rod stopping means 264 is provided on the wall 2 corresponding to the connecting rods 260 and 262.
12 has block pieces 266 and 268 fixed to the inner surface thereof, and a stop screw 270 is screwed to each block piece 266 and 268 (only the stop screw 270 screwed to the block piece 266 in FIG. 11). Is shown). Further, in a specific example, a pin member 272 is fixed to the other end of the link member 258, and a screw shaft 276 is screwed to the block piece 274 fixed to the inner surface of the wall 212.
Coil spring 278 constituting spring means between 2 and screw shaft 276
Is installed. This coil spring 278 is a link member 256
And 258 (further 252 and 254) are biased clockwise in FIGS. 11 and 12, in other words, the bumper member 240 is biased forward. With this configuration, the bumper member 240 is normally biased forward by the action of the coil spring 278, and is shown in FIGS. Is held at a protruding position shown by a solid line, and in such a protruding position, it is allowed to move backward as shown by an arrow 280 (FIG. 11). On the other hand, an obstacle (for example, another truck 4)
11), the bumper member 240 is moved rearward, the link members 252, 254, 256 and 258 are turned counterclockwise in FIG.
Abutment on the head of 270 prevents movement beyond the position shown in FIG. 12, thereby preventing bumper member 240 from colliding against wall 212. While the bumper member 240 moves from the projecting position to the position shown in FIG. 12, the connecting rods 260 and 262 move somewhat upward and then downward, thus permitting the above-described movement. The position of the bumper member 240 can be adjusted by rotating the stop screw 270.

In a specific example, one end of the first shaft 248 is
The working lever 282 is fixed to the protrusion. A roller 284 is rotatably attached to the tip of the operating lever 282 via a pin, and the roller 284
A portion of 44, specifically, a portion 286 indicated by a two-dot chain line in FIG. 4 can act from below. This roller 284
When the bumper member 240 is at the projecting position, it is located below and does not act on the revolving body 44 at the connection position, but when the bumper member 240 moves rearward as indicated by the arrow 280, it pivots upward. Acting on the part 286 of the revolving body 44 with the movement of the acting lever 282, the revolving body 44 is pivoted toward the release position.

The operating lever 282 and the roller 284 constitute operating lever means.

The carriage 4 is provided with brake means indicated by reference numeral 288. The illustrated brake means 288 includes a leaf spring member 292 that is pivotally mounted on a support member 290 fixed to the inner surface of the wall 212 via a pin. A brake member 294, which can be formed from urethane rubber, is provided. An attachment plate 296 is fixed to the connection member 220, and an adjustment screw extending downward toward the leaf spring member 292 is attached to the attachment plate 296.
298 is screwed. A bias spring (not shown) for biasing the leaf spring member 292 upward in the clockwise direction in FIG. 11 is also provided. Further, a pressing member 300 that can act on the leaf spring member 292 is fixed to an intermediate portion of the second shaft 250 (specifically, a portion above the leaf spring member 292). The roller 302 is rotatably mounted via the. With this configuration, the bumper member
When 240 is in the protruding position, the roller 30 of the pressing member 300
2 is located above the leaf spring member 292,
Does not act on In such a state, the leaf spring member 292 is biased upward by the action of a biasing spring (not shown), and a part thereof abuts on the lower end of the adjusting screw 298 to be held in the non-braking state shown in FIG. You. In this non-braking state, the brake member 294 is located above the floor and does not substantially act, and the carriage 4 is allowed to move. On the other hand, when the bumper member 240 is moved rearward as indicated by the arrow 280, the roller 302 of the pressing member 300
The leaf spring member 292 is moved downward with the movement of the bumper member 240. Then, when the bumper member 240 is moved to, for example, the position shown in FIG.
By the action of 0 and the roller 302, the leaf spring member 292 is held in the braking state shown in FIG. In such a braking state, the brake member 294 comes into frictional contact with the floor F through an opening (not shown) formed in the support plate 100 (12th).
Fig.) Thus, the truck 4 is operated by the action of the braking means 288.
Is reliably prevented from moving.

Referring to FIG. 1, in connection with the bumper member 240,
It is preferable to provide a carriage interval setting member 304 at the rear end of the carriage 4. The bogie interval setting member 304 can be formed of a rod-shaped member, and is mounted on the rear end of the bogie main body 6 so as to be able to adjust the amount of protrusion. The bogie interval setting member 304 is provided so as to act on the bumper member 240 of the succeeding bogie 4, and the interval between the bogies 4 can be maintained at a predetermined value by adjusting the amount of protrusion.

It is preferable that the above-described cart 4 is provided with a detachment position locking means 306 as shown in FIG. 13, for example. The illustrated detachment position locking means 306 has a pillar 308 fixed on the support plate 100, and a lock plate 310 is provided between the upper end of the pillar 308 and the upper surface of the support plate 100. The lock plate 310 has an inclined portion 312 and an inclined portion 312 which are inclined upward.
Lock horizontal portion 314 provided at the upper end of the lock and extending substantially horizontally
And a contact portion 316 protruding upward is provided at one end of the lock horizontal portion 314. Further, a bracket piece 318 is provided on the main body plate 48 on the lower side of the revolving unit 44, and an arm 320 is pivotally connected to the bracket piece 318. A roller 324 is rotatably mounted on the distal end of the arm 320 via a pin 322, and the roller 324 moves on the lock plate 310 from a position indicated by a two-dot chain line in FIG. 13 to a lock position indicated by a solid line. It is configured as follows. Also,
The arm 320 is provided with a spring member (not shown) for biasing the arm 320 counterclockwise in FIG. The use piece 326 is attached to the other end of the transmission lever 228 so as to act on the arm 320 of the release position locking means 306.
(Fig. 10) is provided. The action piece 326 acts on the arm 320 at the lock position when the transmission lever 228 is rotated in the direction shown by the arrow 234, and the arrow 328 (FIG. 13)
, Ie, clockwise in FIG. With this configuration, when the revolving unit 44 is at the connection position (shown by a two-dot chain line in FIG. 13), the arm 32
0 is inclined downward and the roller 324 is the lock plate 310
Is located on the inclined portion 312 of the. When the revolving body 44 is swung in the direction indicated by an arrow 92 beyond the release position to the detached position (the position indicated by a solid line in FIG. 13), the arm 320 extends substantially vertically, and the roller 324 extends to the lock plate 310. (The roller 324 abuts against the abutting portion 316, so that the movement beyond the locking horizontal portion 314 is reliably prevented), and thus the release position locking means 306 is locked. In this locked state, the roller 324 is held by the lock horizontal portion 314 by the action of the spring member (not shown), and pivots toward the disengaged position of the revolving body 44 (ie,
The turning movement in the direction opposite to the direction indicated by the arrow 92) is prevented.
Note that when the revolving unit 44 is at a position other than the detachment position (for example, at the release position or the like), the roller 324 is located on the inclined portion 312 of the lock plate 310, and thus the detachment position locking means 306 is in the unlocked state.

Referring mainly to FIGS. 1, 4, 5, 8, 10, and 11, in order to move the truck 4 along the assembly line, as shown in FIG. The revolving body 44 mounted on the main body 6 is moved to the connection position, and the second member 124 of the guided means 118 is moved to the operation position. Further, the power supply means 142 and the power collection means 1 provided on the carriage 4
44 is electrically connected. Thus, the engaging claw 34 (any one of the plurality of engaging claws 34) provided on the drive chain 24 moving in the direction indicated by the arrow 36 abuts on the connecting pin 68, and the engaging claw 34 and the connecting pin 68 The carriage 4 is thus moved in the direction shown by the arrow 162 by the pushing action of the drive chain 24 which moves in the direction shown by the arrow 36 (see also FIG. 6). During this movement, the guided roller 66 is located at the front portion of the bogie main body 6 and the roller guiding portions 20b and 2
2b is guided as required (FIG. 6), and a guided roller 1 attached to a second member 124 is provided at the rear of the bogie main body 6.
The guide 36 is guided by the roller guide portions 20b and 22b of the guide means 2 as required. Thus, the carriage 4 is reliably guided along the guide means 2 by the action of the pair of guided rollers 66 and 136.

When the carriage 4 is moved as described above to the work area (in other words, the area where the release plate 164 is provided), the roller 90 provided on the revolving unit 44 of the carriage 4 is moved to the release plate in the raised position. 164 contacts the upper surface of the
Moved up along 66a. Then, the rotating body 44
Is pivoted upward about the shaft member 56 in the direction shown by the arrow 92 (FIG. 5), and the roller 90 is thus released from the release plate.
When the revolving structure 44 is moved to the horizontal action portion 166b of the 164, the revolving structure 44 is held at the release position shown by a two-dot chain line in FIG. When positioned at such a release position, the connecting pin 68 (FIG. 6) provided on the revolving unit 44 is positioned above the movement path of the engaging claw 34 of the drive chain 24, and thus the connecting pin 68 and the drive chain 24 The drive connection is released, and the movement of the carriage 4 is stopped. Even when the drive connection between the engagement claw 34 and the connection pin 68 is released, the carriage 4 does not stop suddenly, but rather moves and stops due to its inertia force. The carriage 4 comes to a stop at a point located substantially at the center or the front end of the portion 166b in the longitudinal direction. When the roller 90 moves to the tip of the horizontal action portion 166b, it comes into contact with the blocking portion 166c, so that the movement of the roller 90 beyond the blocking portion 166c is prevented, so that the carriage 4 moves beyond the working area without a temporary stop. There is no. As described above, when the carriage 4 moves to the working area, the release plate 164 of the drive release means 160 is released.
Of the connecting pin 68 and the engaging claw 34 of the drive chain 24
And the drive connection is released, and the carriage 4 is stopped in the work area as required.

To remove the carriage 4 from the assembly line, the revolving unit 44 is moved to the arrow 92.
(FIGS. 5 and 13) and the second member 124 of the guided means 118 is turned in the direction shown by the arrow 140 (FIG. 7) by turning in the direction shown in FIG. (Shown by a two-dot chain line in FIG. 7). When the revolving superstructure 44 is pivoted to the release position, the
13 As shown in Fig. 13, the roller 324 is the inclined part of the lock plate 310.
The revolving structure 44 is moved to the lock horizontal portion 314 along the line 312, and thus the revolving unit 44 is releasably locked to the release position by the operation of the release position locking means 306. When the guide roller 66 is moved to the detached position, the guided roller 66 and the connecting pin 68 mounted on the revolving unit 44 are detached from the guide groove of the guide unit 2. In addition, when the second member 124 is moved to the detached position,
The guided roller 136 mounted on the member 124 is also separated from the guide groove of the guide means 2. Thus, the carriage 4 can be freely moved out of the assembly line. In order to move the carriage 4 removed from the assembly line along the line again as described above, the carriage 4 is positioned close to the guide means 2, and then the second member 124 is moved from the disengaged position to the above position. The operator is turned to the operation position, and the operation unit 222 of the operation member 206 is operated by stepping on the foot (FIG. 10). So,
The movement of the operation member 206 is performed by a transmission lever via a transmission wire 227.
The transmission lever 228 is rotated in the direction indicated by the arrow 234. Thus, the operating piece 326 acts on the arm 320 in the locked state as the transmission lever 228 rotates, causing the arm 320 to rotate clockwise in FIG.
Moves from the lock horizontal portion 314 to the inclined portion 312, and thus the locked state of the separation position locking means 306 is released. When the locked state is released, the revolving body 44 pivots downward by its own weight, and is positioned at the coupling position from the release position through the release position.

To move the carriage 4 stopped in the work area as described above, the operation section 222 of the operation member 206 may be stepped on with a foot (FIG. 10). Thus, similarly to the above, the movement of the operation member 206 is transmitted through the transmission wire 227 to the transmission lever 228.
The transmission lever 228 is pivoted in the direction shown by the arrow 234 (at this time, the release position locking means 30
6 is not held in the locked state, so that the operating piece 326 does not act on the arm 320 with the pivoting movement of the transmission lever 228). Thus, one end of the transmission lever 228 acts on the operating member 196 to move the operating member 196 from the non-operating position (the position shown in FIG. 8 and the solid line in FIG. 9) to the operating position (the ninth position). (The position indicated by the two-dot chain line in the figure)
The switch means 192 is activated. Thus, a pressure fluid such as compressed air is supplied to the extension side (cylinder side) of the cylinder mechanism 182, whereby the cylinder mechanism 182 is extended. When the cylinder mechanism 182 is extended, the link members 168 and 172
8, the release plate 164 is moved from the raised position (the position shown by the solid line in FIG. 8) to the lowered position (the position shown by the two-dot chain line in FIG. 8). By separating the revolving unit 44 from the roller 90, the revolving unit 44 is positioned from the release position to the connection position. Thus, when the engaging claw 34 of the drive chain 24 moving in the direction indicated by the arrow 36 abuts on the connecting pin 68, the two are driven and connected, and the carriage 4 is moved together with the drive chain 24. When the carriage 4 moves a predetermined distance, the cylinder mechanism 182 is contracted. Then, link member 1
8, 68 and 172 are pivoted in the counterclockwise direction in FIG. 8 so that the release plate 164 is positioned in the raised position, so that the subsequent carriage 4 is stopped as described above by the action of the release plate 164 in the raised position. .

When the trolley 4 moving along the assembly line hits an obstacle such as the trolley interval setting member 304 (FIG. 1), a part, or an operator in the preceding trolley 4, the trolley 4 stops moving as follows. Is done. That is, when the front end of the truck 4 and thus the bumper member 240 hits an obstacle, the bumper member 240 moves relative to the truck body 6 with the arrow 280 as the truck 4 moves.
(FIG. 11). Thus, the tenth
As can be understood from FIGS. 12 through 14, the relative movement of the bumper member 240 causes the link members 252, 254, 256 and 258 to move to the eleventh position.
In the figure, the first shaft 248 and the second shaft 250 are turned counterclockwise, and accordingly, the first shaft 248 and the second shaft 250 are also linked members 252, 254, 256 and 258.
And is rotated as required. When the first shaft 248 is rotated as shown in FIG. 12, the roller 284 at the distal end of the operating lever 282 provided at the other end acts on the portion 286 (FIG. 4) of the revolving body 44. The revolving body 44 is turned in the direction shown by the arrow 92 (FIG. 5), and the revolving body 44 is moved to the release position. Then, as described above, the drive connection between the connection pin 68 and the engagement claw 34 of the drive chain 24 is released, and the movement of the carriage 4 is stopped. When the second shaft 250 is rotated as shown in FIG. 12, the roller 302 at the distal end of the pressing member 300 provided at the intermediate portion acts on the leaf spring member 292 to pivot downward, The leaf spring member 292 is held in the braking state shown in FIG. When held in the braking state, the brake member 294 is opened by an opening (not shown) formed in the support plate 100.
The bogie main body 6 is suddenly stopped by the braking action of the brake member 294, and is held at the stopped position. As described above, when the advancing bogie 4 hits an obstacle, the shock is buffered by the bumper member 240, the coil spring 278, and the bogie body 6 and the drive chain.
24, the drive connection is released, and the movement of the carriage 4 is stopped, thereby avoiding the adverse effects of the occurrence of impact and the like.

Obstacle bumper member 240 by removing obstacles, etc.
When the operation of the bumper member 240 is released, the bumper member 240 is positioned at the projecting position indicated by the solid line in FIG. Thus, the rotation of the first shaft 248 causes the roller 284 at the tip of the operating lever 282 to be separated below the revolving body 44, and the revolving body 44 is positioned at the connection position by its own weight, and the connection pin 68 and the drive chain The 24 engagement claws 34 are drivingly connected. Further, the rotation of the second shaft 250 causes the roller 302 at the distal end of the pressing member 300 to be separated above the leaf spring member 292, and the leaf spring member 292 is brought into the non-braking state by the action of a biasing spring (not shown). And the brake member 294 does not act on the floor. Thus, the movement of the cart 4 is resumed, and the cart 4 is moved as required along the assembly line.

As mentioned above, although one specific example of the bogie shock absorbing device constituted according to the present invention has been described, the present invention is not limited to such specific example, and various modifications and corrections can be made without departing from the scope of the present invention. Is possible.

For example, in the illustrated example, the movement of the bumper member is transmitted to the shaft member via a link mechanism. However, the movement is transmitted to the shaft member via another known mechanism, for example, a mechanism comprising a combination of a rack and a pinion. You may make it.

<Effects of the Invention> According to the present invention, it is possible to buffer a shock when a moving truck collides with an obstacle such as another truck, and at the same time, release the drive connection. Can be prevented. Moreover, the entire mechanism is simple and can be manufactured at relatively low cost.

[Brief description of the drawings]

FIG. 1 is a plan view showing a part of an assembly line to which a specific example of a bogie shock absorber according to the present invention is applied. FIG. 2 is an enlarged front view showing a part of a drive chain in the assembly line of FIG. 1; FIG. 3 is an enlarged plan view showing a part of the drive chain in FIG. 2; FIG. 4 is a plan view showing a connecting portion between the drive chain and the bogie in the assembly line of FIG. FIG. 5 is a sectional view taken along line VV in FIG. FIG. 6 is a side view of a connecting portion between the drive chain and the bogie shown in FIG. FIG. 7 is a cross-sectional view showing the guided means provided on the bogie of FIG. 1 and its vicinity. FIG. 8 is a front view showing a drive release means provided in a work area. FIG. 9 is a plan view of the drive release means shown in FIG. FIG. 10 is a cross-sectional view showing a front end of the bogie. FIG. 11 is a sectional view taken along line XI-XI in FIG. FIG. 12 is a cross-sectional view corresponding to FIG. 11, showing a state when an obstacle acts on the bumper member. FIG. 13 is a sectional view showing a detachment position locking means provided on the truck of FIG. 1 and its vicinity. 2 ... Guiding means 4 ... Dolly 6 ... Dolly main body 24 ... Driving chain 34 ... Engaging claw 44 ... Revolving body 66 and 136 ... Guided roller 68 ... Connecting pin 72 and 74 ... Bumping means 90 Roller 118 Guided means 160 Drive release means 164 Release plate 182 Cylinder mechanism 192 Switch means 196 Working member 206 Operating member 208 Transmission means 240 Bumper Member 242: Transmission mechanism 252, 254, 256, and 258: Link member 282: Working lever 288: Brake means 300: Pressing member 306: Release position locking means

 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-62-125946 (JP, A) JP-A-58-144012 (JP, A)

Claims (2)

(57) [Claims] A connecting member provided on the bogie main body and releasably connected to an engaging member fixed to a drive transmitting member moved in a predetermined direction, wherein the connecting member is mounted on the bogie main body. A connecting position at which the connecting member is drivingly connected to the drive transmitting member by the connecting member being located on the movement path of the engaging portion; and By moving upward from the movement path of the engaging portion, the connecting member can be pivoted between a release position where the drive connection to the drive transmission member is released, and the bogie main body is moved by a spring means. A bumper member urged to protrude forward from the front end and mounted so as to be relatively movable with respect to the front end of the bogie body against the urging force of the spring means; Transmit relative movement to the revolving superstructure A transmission mechanism, wherein the transmission mechanism is configured to rotate in association with the relative movement of the bumper member, an operation lever fixed to the shaft, and rotatably mounted on a tip of the operation lever. The relative movement of the bumper member causes the roller of the operating lever to act from below the rotating body to rotate the rotating body from the connection position to the release position. Features a bogie shock absorber. 2. The truck body further includes brake means including a brake member which is brought into frictional contact with the floor in conjunction with the relative movement of the bumper member, wherein the brake means comprises The shock absorbing device for a bogie according to claim 1, wherein the member is brought into a braking state when the member is brought into frictional contact with the floor.