Carriage rear door opening and closing device

Abstract

The compartment rear door opening and closing device comprises two hook sheet plates with the same shape and size, the two hook sheet plates are welded and installed through a reinforcing plate, a front compartment end and a rear compartment end are arranged on the hook sheet plates, a first pin shaft is rotationally installed at the front compartment end of the two hook sheet plates, a second pin shaft is rotationally installed at the rear compartment end of the two hook sheet plates, and the first pin shaft and the second pin shaft are hinged to each other. A front compartment positioning block is rotationally installed on the first pin shaft, a rear door connecting block is rotationally installed on the second pin shaft, supporting positioning parts are arranged at the bottoms of the two hook sheet plates, and a supporting pin shaft is rotationally installed between the two supporting positioning parts. Automatic opening and closing of the compartment rear door are achieved, then grain loading and unloading are achieved, the safety of operators is guaranteed, and meanwhile the convenience of opening and closing of the compartment rear door of the grain dumper is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of opening and closing rear doors of a grain dump truck compartment, in particular to a compartment rear door opening and closing device. Background Art

[0002] When opening the rear door of an existing grain dump truck, manual unlocking of the lock is generally required, which cannot fully guarantee the safety of the operator. In addition, the opening and closing is inconvenient, and the automatic opening and closing of the rear door of the grain dump truck cannot be achieved.

[0003] Therefore, in view of the shortcomings of the existing technology, it is necessary to provide a vehicle rear door opening and closing device to solve the shortcomings of the existing technology. Utility Model Content

[0004] The purpose of the present utility model is to avoid the shortcomings of the existing technology and provide a vehicle compartment rear door opening and closing device, which drives two curved hook plates to rise and fall synchronously through the output of the hydraulic cylinder, and then drives the lifting of the rear door connecting block and the vehicle compartment rear door, thereby realizing the automatic opening and closing of the vehicle compartment rear door, and then realizing the loading and unloading of grain, ensuring the safety of operators, and at the same time improving the convenience of opening and closing the vehicle compartment rear door of the grain dump truck.

[0005] The above-mentioned purpose of the present invention is achieved through the following technical means.

[0006] Provided is a vehicle compartment rear door opening and closing device, which is installed on one end of the two vehicle compartment side walls of a dump truck near the rear door, and includes two curved hook plates of the same shape and size, which are welded and installed between the two curved hook plates via a reinforcing plate, and are provided with a front compartment end and a rear compartment end, the front compartment ends of the two curved hook plates are rotatably installed with a first pin shaft, and the rear compartment ends of the two curved hook plates are rotatably installed with a second pin shaft, a front compartment positioning block is rotatably installed on the first pin shaft, and a rear door connecting block is rotatably installed on the second pin shaft, and a support positioning portion is provided at the bottom of the two curved hook plates, and a support pin shaft is rotatably installed between the two support positioning portions.

[0007] A hydraulic cylinder is fixedly installed on the side wall of the carriage, and the output end of the hydraulic cylinder is rotatably installed on the support pin shaft. A side wall support column is also installed on the side wall of the carriage, and a front carriage positioning block is welded on the side wall support column. The rear door connecting block is fixedly installed on the top of the rear door of the carriage.

[0008] The bottom of the rear box end is inclined, and a positioning column is installed on the side wall of the carriage, and the positioning column is movably connected with the rear box end.

[0009] Any one end of the first pin shaft and the second pin shaft extends to the outer side wall of the bent hook plate and is fixedly welded to a limiting circular plate, a limiting vertical portion is provided on the limiting circular plate, and a limiting block is fixedly installed on the outer side wall of the bent hook plate, and the limiting block fits with the limiting vertical portion.

[0010] The utility model drives the synchronous lifting of two curved hook plates through the output of the hydraulic cylinder, and then drives the lifting of the rear door connecting block and the rear door of the carriage, realizing the automatic opening and closing of the rear door of the carriage, and then realizing the loading and unloading of grain, ensuring the safety of the operators, and at the same time improving the convenience of opening and closing the rear door of the grain dump truck. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention is further described with reference to the accompanying drawings, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0012] Figure 1 The utility model is a schematic diagram of the main structure of a vehicle rear door opening and closing device.

[0013] Figure 2 The utility model is a three-dimensional structural diagram of a vehicle compartment rear door opening and closing device installed on a dump truck compartment.

[0014] Figure 3 The utility model is a side view structural diagram of a vehicle rear door opening and closing device.

[0015] from Figures 1 to 3 Including:

[0016] 1. Carriage side wall;

[0017] 2. The rear door of the carriage;

[0018] 3. Hook plate;

[0019] 4. Reinforcement plate;

[0020] 5. Front compartment end;

[0021] 6. Rear box end;

[0022] 7. First pin;

[0023] 8. Second pin;

[0024] 9. Front compartment positioning block;

[0025] 10. Back door connection block;

[0026] 11. Support and positioning part;

[0027] 12. Support pin;

[0028] 13. Hydraulic cylinder;

[0029] 14. Side wall support column;

[0030] 15. Positioning column;

[0031] 16. Limiting circular plate;

[0032] 17. Limiting vertical part;

[0033] 18. Limit block. DETAILED DESCRIPTION

[0034] The present invention will be further described with reference to the following embodiments.

[0035] Example 1.

[0036] like Figure 1-3 As shown, a vehicle compartment rear door opening and closing device is installed on the two vehicle compartment side walls 1 of the dump truck near the rear door, including two curved hook plates 3 of the same shape and size, which are welded and installed by a reinforcing plate 4. The curved hook plates 3 are provided with a front compartment end 5 and a rear compartment end 6. The front compartment ends 5 of the two curved hook plates 3 are rotatably installed with a first pin shaft 7, and the rear compartment ends of the two curved hook plates 3 are rotatably installed with a second pin shaft 8. A front compartment positioning block 9 is rotatably installed on the first pin shaft 7, and a rear door connecting block 10 is rotatably installed on the second pin shaft 8. The bottoms of the two curved hook plates 3 are provided with support positioning parts 11, and a support pin shaft 12 is rotatably installed between the two support positioning parts 11.

[0037] The present application is used to realize the automatic opening and closing of the rear door of a grain dump truck. First, two curved hook plates 3 of the same shape and size are welded together through a reinforcing plate 4. A gap is left between the two curved hook plates 3 for the installation of other pin shafts. The two curved hook plates 3 are installed on the side wall 1 of the car body through the first pin shaft 7 and the front car positioning block 9. The two curved hook plates 3 are installed on the top of the rear door through the second pin shaft 8 and the rear door connecting block 10. The support positioning part 11 is provided at the bottom center position of the curved hook plate 3 to facilitate the application of stress.

[0038] A hydraulic cylinder 13 is fixedly installed on the side wall 1 of the carriage, and the output end of the hydraulic cylinder 13 is rotatably installed on the support pin 12. A side wall support column 14 is also installed on the side wall 1 of the carriage, and the front compartment positioning block 9 is welded and installed on the side wall support column 14. The rear door connecting block 10 is fixedly installed on the top of the rear door 2 of the carriage.

[0039] The output of the hydraulic cylinder 13 drives the support pin shaft 12 to rise and fall, and then drives the support positioning part 11 and the two bent hook plates 3 to rotate and rise around the first pin shaft 7. The front compartment positioning block 9 is fixedly installed on the side wall support column 14 to position the first pin shaft 7. The rear door connecting block 10 enables the bent hook plate 3 to drive the second pin shaft 8 to rise and fall, and then drive the rear door 2 of the compartment to rise and fall.

[0040] The bottom of the rear box end 6 is inclined, and a positioning column 15 is also installed on the side wall 1 of the carriage. The positioning column 15 is movably engaged with the rear box end 6.

[0041] The bottom of the rear box end 6 is inclined to facilitate the movable fit with the positioning column 15 to avoid right-angle jamming. At the same time, the positioning column 15 can provide support for the rear box end 6.

[0042] Any one end of the first pin shaft 7 and the second pin shaft 8 extends to the outer wall of the bent hook plate 3 and is fixedly welded to a limiting circular plate 16. A limiting vertical portion 17 is provided on the limiting circular plate 16. A limiting block 18 is fixedly installed on the outer wall of the bent hook plate 3, and the limiting block 18 is in contact with the limiting vertical portion 17.

[0043] The side wall of the limiting circular plate 16 is provided with a limiting vertical portion 17 which fits with the limiting block 18 to prevent the first pin 7 and the second pin 8 from rotating on their own.

[0044] The utility model drives the two hook plates 3 to rise and fall synchronously through the output of the hydraulic cylinder 13, and then drives the rear door connecting block 10 and the rear door 2 of the carriage to rise and fall, thereby realizing the automatic opening and closing of the rear door 2 of the carriage, and then realizing the loading and unloading of grain, ensuring the safety of the operators, and at the same time improving the convenience of opening and closing the rear door 2 of the grain dump truck.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A vehicle compartment rear door opening and closing device, which is mounted on one end of the two compartment side walls of a dump truck near the compartment rear door, and is characterized by: It includes two curved hook plates of the same shape and size, which are welded and installed by a reinforcing plate. The curved hook plates are provided with a front compartment end and a rear compartment end. The front compartment ends of the two curved hook plates are rotatably installed with a first pin shaft, and the rear compartment ends of the two curved hook plates are rotatably installed with a second pin shaft. A front compartment positioning block is rotatably installed on the first pin shaft, and a rear door connecting block is rotatably installed on the second pin shaft. The bottoms of the two curved hook plates are provided with support positioning parts, and a support pin shaft is rotatably installed between the two support positioning parts.

2. A vehicle rear door opening and closing device according to claim 1, characterized in that: A hydraulic cylinder is fixedly installed on the side wall of the carriage, and the output end of the hydraulic cylinder is rotatably installed on the support pin shaft. A side wall support column is also installed on the side wall of the carriage, and the front compartment positioning block is welded on the side wall support column. The rear door connecting block is fixedly installed on the top of the rear door of the carriage.

3. The vehicle rear door opening and closing device according to claim 2, characterized in that: The bottom of the rear box end is inclined, and a positioning column is installed on the side wall of the carriage, and the positioning column is movably engaged with the rear box end.

4. The vehicle rear door opening and closing device according to claim 3, characterized in that: Any one end of the first pin shaft and the second pin shaft extends to the outer side wall of the bent hook plate and is fixedly welded to a limiting circular plate, a limiting vertical portion is provided on the limiting circular plate, and a limiting block is fixedly installed on the outer side wall of the bent hook plate, and the limiting block is in contact with the limiting vertical portion.

Images