JPH079681Y2 - Traction device in box-pallet carrier - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box pallet towing device for a box pallet carrier for loading and transporting postal items and other types of luggage.

[0002]

2. Description of the Related Art Conventionally, when a box pallet is towed by a carrier, a tractor hook is mounted on the carrier, a connecting metal fitting is provided on the box pallet side, and the towing hook is engaged with the connecting metal fitting. The carrier was pulling the box pallet.

[0003]

According to the above-mentioned conventional device, the box pallet must be provided with a connecting metal fitting for connecting with the carrier vehicle, which requires a delicate operation of the carrier vehicle during the connecting work. Therefore, a lot of time is required for the connection work. Also, since the box pallet and the carrier are connected via the hook and the connecting metal fitting, a tight and integral connection cannot be expected, and the box pallet easily swings at the connecting part, and the route direction of the box pallet is not determined when the carrier retreats. Absent.

The present invention has been proposed in view of the above problems of the prior art. The object of the present invention is to connect the box pallet to the box pallet carrier simply, quickly and surely. Another object of the present invention is to provide a towing device for a box pallet carrier vehicle in which the steering performance of the box pallet carrier vehicle in the connected state is improved.

[0005]

In order to achieve the above object, a traction device for a box pallet carrier vehicle according to the present invention comprises a traction member support frame disposed at a rear end portion of a traveling body of the box pallet carrier vehicle, and a support member for the tractor member support frame. An inclined guide member that is disposed in the frame and extends obliquely downward and rearward, a slide shifter that includes a hydraulic cylinder whose upper end is supported by the support frame, and a rod that is fitted in the cylinder so as to be movable back and forth, and an upper portion. A lower part of the inclined part has a box pallet traction member in which a lower horizontal part is continuously provided, and a guide part that slidably fits to the inclined guide member is provided on the upper sloping part of the traction member. The lower horizontal part is provided with a lock part that engages with and disengages from a connecting pin that is hung vertically on the bottom surface of the bogie end of the bogie pallet, and the lock part is mounted on the horizontal part. Done While being pivotally supported by the pivot, it is biased by a torsion spring mounted between the pivot and the upper surface of the horizontal piece so as to project to the upper surface of the horizontal piece. Both ends of the connecting pin are fixed, and a connecting pin restraint piece pivotally supported by a pivot mounted on the same semi-circular connecting frame is detachably fitted to the inner space of the same semicircular connecting frame, and the pivot and the restraining piece. By means of a torsion spring mounted between them, the restraint piece is always biased so as to fit into the semi-circular coupling frame, and the inner peripheral surface of the tip of the semi-circular coupling frame and the tip of the coupling pin restraining piece. It is characterized in that semicircular grooves are respectively provided over the surface facing the outer peripheral surface, and the engaging holes of the connecting pin are formed by the respective semicircular grooves.

[0006]

Since the present invention is constructed as described above,
When the center line of the box pallet carrier is aligned with the center line of the box pallet and the carrier is retracted, the connecting pin restraint located in the semicircular ring connecting frame projecting from the lower horizontal part of the box pallet traction member. One piece sneaks into the lower part of the connecting pin that is hung on the lower part of the trolley of the box pallet.

In this state, when the slide shifter is driven to retract the rod in the hydraulic cylinder of the shifter, the box pallet pulling member connected to the rod through the upper inclined piece is the upper inclined portion of the member. A guide pin provided on one piece and an inclined guide member arranged on the traction member support frame of the transport vehicle are used as guides to ascend, and a connecting pin restraining part of the pallet pulling member is hung from a box pallet. The pin is pressed down by the pin and pivots downward against the urging force of the urging member with respect to the lower horizontal portion, and the connecting pin enters the semicircular annular connecting frame.

By moving the transport vehicle in this state, the connecting pin is guided by the inner peripheral surface of the semi-annular connecting frame and fits into the semi-circular groove provided in the connecting frame. On the other hand, the connecting pin restraining portion piece released from the pressing force by the connecting pin is rotated upward by the urging force of the urging member and is fitted into the semicircular annular connecting frame again, and the semicircular annular connecting frame and The connecting pin engages over the respective semi-circular grooves provided on the front end facing surface of the connecting pin restraining portion, and thus the connecting pin is locked to the box pallet pulling member. As a result, the box pallet is integrally connected to the box pallet carrier by the connecting pin and the box pallet pulling member.

Contrary to the above, the rod of the syllab shifter is extended from the hydraulic cylinder, and the box pallet pulling member is lowered to disconnect the pulling member from the box pallet.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. A box pallet carrier is equipped with a traction member support frame 1 at the rear end of the body of the car, and a rod-shaped inclined guide member 2 is provided on the support frame 1 and extends obliquely rearward and downward. ing.

A slide shifter 3 has a hydraulic cylinder 3a whose upper end is pivotally supported 4 on the support frame 1, and a box pallet pulling member 5 is pivotally mounted on a lower end of a rod 3b fitted in the cylinder 3a so as to be movable back and forth. It is supported by 6.
Reference numeral 7 in the figure denotes a drive device for the slide shifter 3. The pulling member 5 includes an upper inclined portion piece 5a and a lower horizontal portion piece 5b, and a guide portion piece 8 slidably fitted to the inclined guide member 2 is attached to the upper inclined portion piece 5a. ,
A triangular locking piece 9 is rotatably supported on the upper surface of the tip of the lower horizontal piece 5b so as to be retractable. The locking piece 9 is mounted on a pivot (not shown) and has a torsion spring (not shown). Is always urged to project to the upper surface of the horizontal piece 5b.

[0012] The above is the realization flat 2-11 by the present inventors.
It is the same as that proposed by Japanese Patent No. 5706.
B is a box pallet, which has a mesh-shaped peripheral frame 10 on the traveling carriage.
Is provided upright, an opening / closing portion for loading and unloading luggage is provided in a part of the same peripheral frame as required, and a connecting pin 11 is vertically provided on the lower surface of the carriage.

The semi-annular connecting frame 12 is fixed to both sides of the base end of the lower horizontal part 5b having the locking portion 9 disposed on the upper surface thereof, and the semi-annular connecting frame 12 is also provided. The connecting pin restraint portion piece 13 is rotatably pivoted so as to be fitted into and out of, and a torsion spring 15 is mounted between the portion piece 13 and the pivot shaft 14, and the connection is made by the urging force of the spring 15. The pin restraint portion piece 13 is constructed so as to be fitted into the semicircular annular connecting frame 12 at all times, and the connecting frame 12 and the connecting pin restraining portion piece 13 have a semicircular shape for engaging the connecting pin 11 on the end facing surfaces thereof. Grooves 12a and 13a are provided.

The torsion spring 15 constitutes the urging member. Since the illustrated embodiment is configured as described above, the box pallet carrier A is retracted in line with the center line of the box pallet B, and the connecting pin restraining piece 13 is positioned below the connecting pin 11. (See FIG. 4) Then, the rod 3b of the slide shifter 3 is retracted, and the box pallet pulling member 5 is raised by using the guide portion piece 8 and the inclined guide member 2 as guides. , Is rotated downward against the biasing force of the spring 15,
The connecting pin 11 enters the semi-annular connecting frame 12.
(See FIG. 5) In this state, when the carrier A is moved in the direction of the arrow in FIG. 6, the connecting pin 11 is guided by the inner peripheral surface of the semicircular annular connecting frame 12 and guided into the semicircular groove 12a. When the connecting pin 11 is fitted into the semi-circular groove 12a in this way,
Since the pressing force of the connecting pin 11 is released, the connecting pin restraining portion piece 13 is rotated upward by the urging force of the spring 15 and fitted into the semi-annular connecting frame 12, so that the connecting frame 1
The pin 11 is locked between the two semicircular grooves 12a and the semicircular groove 13a of the connecting pin restraining piece 13.

When the connection between the box pallet transport vehicle A and the box pallet B is to be released, the box pallet pulling member 5 is lowered by the slide shifter and separated from the connecting pin 11. (Refer to FIG. 7) When a horizontal frame member is fixed to the lower surface of the bogie of the box pallet B instead of the connecting pin 11, the horizontal frame member can be operated by the operation described in Japanese Utility Model Laid-Open No. 2-115706. The locking piece 9 can be locked.

[0016]

As described above, according to the present invention, the box pallet traction member support frame provided at the rear end of the traveling vehicle body of the box pallet transport vehicle is vertically mounted.
A box-pallet locking member that engages and disengages with a connecting pin that hangs from the lower surface of the box pallet, and a semi-circular annular connecting frame that projects from the lower horizontal portion of the traction member, and is pivotally movable in the vertical direction on the horizontal portion. A connecting pin restraining piece that is supported and is inserted into and removed from the semi-circular connecting frame, and a semi-circular groove for engaging the connecting pin is formed on each of the facing portions of the restraining piece and the semi-circular connecting frame. The box pallet having the connecting pin hung vertically from the lower surface of the carriage is provided with a torsion spring for urging the connecting pin engaging portion to pivotally support the connecting pin engaging portion so as to always rotate the upper portion. It is possible to quickly and surely connect the above and the box pallet carrier with a simple operation, and the vehicle maneuvering performance after the connection is improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of a towing device in a box pallet carrier according to the present invention.

FIG. 2 is a plan view of a box pallet towing unit.

FIG. 3 is a side view of the box pallet towing unit.

FIG. 4 is a side view showing a state in which the box pallet carrier and the box pallet are ready for connection.

FIG. 5 is a side view showing a state in which the both are being connected.

FIG. 6 is a side view showing a state at the time of completion of connection between the both.

FIG. 7 is a side view showing a state in which the connection between the two is released.

[Explanation of symbols]

 A Box pallet carrier B Box pallet 1 Traction member support frame 2 Inclined guide member 3 Slide shifter 3a Hydraulic cylinder 3b Rod 5 Box pallet traction member 5a Upper inclined piece 5b Lower horizontal piece 8 Guide piece 12 Annular connection frame 12a Semicircular groove 13 Connecting pin restraining piece 13a Semi-circular groove 14 Axis 15 Torsion spring

Claims (1)

[Scope of utility model registration request] 1. A traction member support frame disposed at a rear end portion of a traveling body of a box pallet carrier, an inclined guide member disposed on the support frame and extending obliquely rearward and downward, and an upper end of the support frame. A slide shifter consisting of a supported hydraulic cylinder and a rod fitted in the cylinder so as to move back and forth, and a box pallet traction member in which a lower horizontal part is continuously connected from the lower end of the upper inclined part A guide portion piece slidably fitted to the inclined guide member is mounted on the upper inclined portion piece of the member, and a lower end of the lower horizontal portion is vertically attached to the lower surface of the bogie end of the bogie. The connecting pin is provided with a locking part that is disengaged, and the locking part is pivotally supported on a pivot mounted on the horizontal part,
By a torsion spring mounted between the same and the pivot, it is urged so as to project to the upper surface of the horizontal part, and both sides of the base end of the semi-annular coupling frame are fixed to both ends of the horizontal part. By means of a connecting pin restraint piece pivotally supported on a pivot mounted on the joint frame so that it can be freely inserted into and removed from the inner space of the semi-circular joint frame, and a torsion spring mounted between the pivot and the restraint piece. , The constraining portion piece is always biased so as to fit into the semi-circular connecting frame, and extends over the opposing surface between the tip inner peripheral surface of the semi-circular connecting frame and the tip outer peripheral surface of the connecting pin constraining portion piece. A semi-circular groove is provided for each of the connecting holes, and an engaging hole for the connecting pin is formed by each semi-circular groove.