JPH0113002Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention can be used, for example, in an automobile manufacturing line.
The present invention relates to a suspended conveyance device used to support and convey an automobile body.

Further details of the present invention include: a trolley device guided by a trolley guide rail; and a trolley drive device guided by a trolley drive device rail disposed above the trolley guide rail; The trolley device has a front trolley at the front end and a rear trolley at the rear end, and the front trolley includes a passive dog that can be engaged with and detached from the drive protrusion from the trolley drive device by lifting and lowering it, and the passive dog has a An interlocking operating lever capable of vertically swinging and a hold dog for preventing runaway disposed rearward of the passive dog so as to be swingable back and forth are provided, and the other rear trolley is provided with a cam tail for moving the operating lever upward. The present invention relates to a hanging conveyance device.

First, an example of a conventional hanging conveyance device is shown in Figure 1~
This will be explained based on FIG. Reference numeral 1 denotes a hanging conveyance device, which includes a trolley guide rail 2, a trolley drive device rail 3 installed above the trolley guide rail 2, a trolley device 4 guided by the trolley guide rail 2, and a trolley device 4 attached to the trolley device 4. a conveyed object support device 5;
A trolley drive device (such as a chain conveyor) 6 is guided by the trolley drive device rail 3. The trolley device 4 includes a front trolley 7
, a pair of front and rear free trolleys 8, 9 and a rear trolley 10, connecting rods 11, 12 that connect between the front trolley 7 and free trolley 8, and between free trolley 9 and rear trolley 10, and both free trolleys 8. , 9, the trunnion pin 13,
14 and a connecting frame 15 that connects the two.
The conveyed object supporting device 5 includes C-necks 16 and 1 attached to the lower ends of the trunnion pins 13 and 14.
7, an arm rod 18 attached between the lower ends of these C-necks 16, 17 and extending in the direction of trolley movement, and an upwardly extending portion provided on inwardly curved portions 19, 20 formed at the front and rear ends of this arm rod 18. Support parts 21, 22
It consists of. 23 indicates an object to be transported. Each of the trolleys 7, 8, 9, 10 has guiding wheels 24, 2.
5, 26, 27 and wheels 28, 2 for preventing lateral vibration
9, 30, and 31, respectively. The front trolley 7 has a passive dog 33 which is movable up and down and which can be engaged with and detached from the drive protrusion 32 from the trolley drive device 6, and has a horizontal shaft 34 in the middle thereof.
The operation lever 35 is attached to be able to swing up and down via the
is extended to the front. The rear end of the operating lever 35 and the lower end of the passive dog 33 are connected via a pin 36. Therefore, the operating lever 35 and the passive dog 33 are interlocked so that when the operating lever 35 moves upward, the passive dog 33 descends. At this time, the vertical movement of the passive dog 33 is guided by a cylindrical body 37 attached to the guide wheel shaft and a guide body 38 provided on the front trolley 7. Normally, the passive dog 33 is raised by the biasing of a weight on the distal end side of the operating lever 35, and the upper limit of the upward movement is regulated by the base end side of the operating lever 35 coming into contact with the stopper 39. The front trolley 7 has a contact member 40 located below the operating lever 35, and at the rear of the upper end.
It has a hold dog 41 located behind the passive dog 33. This hold dog 41 is configured to be able to swing back and forth via a pin 42, and normally its upper end is biased by a weight so as to enter the moving path of the drive protrusion 32, and in such a state, the hold dog 41 is It is maintained by the lower end coming into contact with the stopper 43 on the front trolley 7 side from the rear. The other rear trolley 10 has a cam tail 44 extending rearward that moves the operation lever 35 upward, and a contact portion 45 with which the contact member 40 can contact is formed at the lower part of the cam tail 44. has been done.

In such a conventional configuration, normally the trolley device 4
Traveling is carried out by the driving protrusion 32 engaging the passive dog 33, as shown by solid lines in FIGS. 1 and 2. At this time, the front end of the operating lever 35 is moving downward. When the trolley device 4 tries to run out of control during such running, the hold dog 41 comes into contact with the drive protrusion 32.
That runaway behavior will be prevented. When stopping the trolley device 4 at a predetermined stop position, the stopper plate 46 is inserted above the trolley guide rail 2, as shown by the imaginary line in FIG. As a result, the passive dog 33 descends and enters under the stopper plate 46, which disengages the drive protrusion 32, and the trolley device 4
becomes a non-driving state, and the hold dog 41 comes into contact with the stopper plate 46, stopping further travel. Furthermore, when the trolley device 4 that is running following approaches the trolley device 4 that is stopping in advance, the operating lever 35 of the following trolley device 4 is first moved to the position of the preceding trolley device 4, as shown by the solid line in FIG. The passive dog 33 rides on the cam tail 44, and in conjunction with the upward movement of the operating lever 35, the passive dog 33 descends and is removed from the drive protrusion 32. As a result, the driving force from the trolley drive device 6 side is cut off from the succeeding trolley device 4. Then, the abutting member 40 comes into contact with the abutted portion 45, and the subsequent trolley device 4 is stopped.

According to the conventional example of such a configuration and operation, the third
In the storage state shown in the figure, each time the drive protrusion 32 on the continuously driven trolley drive device 6 side passes over the stopped front trolley 7, it is pushed into the hold dog 41 from behind as shown by the imaginary line in FIG. The vehicle collides with the vehicle, causing the hold dog 41 to swing forward as it passes. Therefore, in the storage section, noise is generated intermittently due to the collision of the drive protrusion 32 with the hold dog 41 and the collision of the lower end of the hold dog 41 with the stopper 43 when it automatically returns after swinging forward. will occur. Moreover, the above-mentioned repeated collisions will damage the hold dog 41 and its attachment portion.

SUMMARY OF THE INVENTION An object of the present invention is to provide a suspended conveyance device that can prevent the drive protrusion from colliding with the hold dog in the storage section.

In order to achieve the above object, the hanging conveyance device according to the present invention is constructed by interlocking a passive dog and a hold dog with a certain clearance in the vertical direction.

According to the configuration of the present invention, the length of the vertical clearance is set constant in accordance with the amount of descent of the passive dog that is lowered by the action of the stopper plate, so that when the stopper plate is applied, the length of the clearance in the vertical direction is set constant. The hold dog can be brought into reliable contact with the plate. When the subsequent operation lever is applied to the cam tail that is stopped in advance to lower the passive dog significantly, that is, in the storage state, the amount of descent is greater than the amount of vertical clearance, so the hold dog is can be swung forward and positioned below the movement path of the drive protrusion.
As a result, it is possible to completely eliminate the drive protrusion from colliding with the hold dog in the storage section, thereby minimizing the generation of noise, and also preventing damage to the hold dog and its attachment portion.

An embodiment of the present invention will be described below based on FIGS. 4 to 6. In addition, conventional examples (Figures 1 to 3)
The same reference numerals indicate the same or almost the same components. A long hole 47 in the vertical direction is formed in the passive dog 33, and the pin 4 fits into this long hole 47.
8 is attached to the arm rod 49 on the hold dog 41 side. Here, the length of the elongated hole 47 in the vertical direction, that is, the constant clearance L, is set to be approximately equal to the amount of descent of the passive dog 33 when the stopper plate 46 is operated.

FIG. 4 shows a normal running condition. That is, the passive dog 33 has risen the most and is engaged with the driving protrusion 32, and the pin 48 is located at the bottom of the elongated hole 47. FIG. 5 shows a stopped state in which the stopper plate 46 is activated and the hold dog 41 is brought into contact with the stopper plate 46. At this time, the passive dog 33 has descended and is located below the stopper plate 46, but since the amount of descent is approximately equal to the clearance L of the elongated hole 47, the pin 48 is
It will be located at the top of the That is, due to such lowering of the passive dog 33, the hold dog 4
1 is securely locked to the stopper plate 46 without any interference. FIG. 6 shows a state in which the succeeding operating lever 35 rides on the cam tail 44 which is stopped in advance. At this time, the passive dog 35 further descends from the state shown in FIG. 5 and pushes down the pin 48. This will cause hold dog 4
1 falls forward (swings) around the pin 42 and escapes downward from the movement path of the drive protrusion 32. Therefore, the drive protrusion 32 on the trolley drive device 6 side, which is continuously driven, passes through the storage section without colliding with the hold dog 41.

FIG. 7 shows another embodiment. That is, a locking piece 50 is provided continuously from the upper end of the passive dog 33 to the rear, and the locking piece 5 is connected from the hold dog 41 to the rear.
The locking pieces 51 facing each other are arranged in a row with a certain clearance L placed below with respect to 0.

[Brief explanation of the drawing]

Figures 1 to 3 show a conventional example, Figure 1 is a side view, Figures 2 and 3 are side views of main parts showing the operating state, and Figures 4 to 6 are examples of the present invention. Examples are shown;
FIG. 7 is a side view showing the respective operating states, and FIG. 7 is a side view showing another embodiment. DESCRIPTION OF SYMBOLS 1... Hanging conveyance device, 2... Trolley guide rail, 3... Trolley drive device rail, 4... Trolley device, 5... Transported object support device, 6... Trolley drive device, 7... Front trolley, 10... Rear trolley, 23... Object to be transported, 32... Drive protrusion, 33... Passive dog, 35... Operating lever,
40...Abutment member, 41...Hold dog, 4
4...Cam tail, 45...Abutted part, 46...
Stopper plate, 47... Long hole, 48... Pin, 49
... Arm rod, 50 ... Locking piece, 51 ... Locked piece.

Claims (1)

[Scope of utility model registration request] The trolley device includes a trolley device guided by a trolley guide rail, and a trolley drive device guided by a trolley drive device rail disposed above the trolley guide rail, and the trolley device has a front trolley at its front end. It also has a rear trolley at the rear end,
The front trolley includes a passive dog that can be engaged and disengaged by raising and lowering the drive protrusion from the trolley drive device, an operating lever that can swing vertically in conjunction with the passive dog, and a lever that can swing back and forth behind the passive dog. In a suspended conveyance device, the passive dog and the hold dog are fixed in the vertical direction, and the other rear trolley is provided with a cam tail for moving the operating lever upward. A suspended conveyance device characterized by interlocking with a clearance of .