Active opening mechanism for rear door of dumper

Abstract

The utility model discloses a dumper rear door active opening mechanism, which relates to the technical field of dumper door opening, and comprises a dumper rear door and a carriage tail bracket for bearing the dumper rear door, a hydraulic cylinder A is arranged between the dumper rear door and the carriage tail bracket, and the hydraulic cylinder A is used for driving the top of the dumper rear door to rotate around the fixed point position of the outer wall of the carriage tail bracket; an inwards-concave mounting groove is formed in the front face of the vehicle rear door, a hydraulic cylinder A is arranged in the mounting groove, and the hydraulic cylinder A is used for automatically locking the position between the vehicle rear door and the carriage tail frame. The locking structure arranged in the mounting groove of the vehicle rear door can achieve automatic locking limiting or unlocking between the vehicle rear door and the carriage tail frame, the hydraulic cylinder A is matched to drive the top of the vehicle rear door to automatically rotate around the top of the carriage tail frame, and driving of automatic rotating opening or closing locking of the vehicle rear door is achieved. Tedious manual operation and potential safety hazards are eliminated, so that the working efficiency and the safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle door opening, in particular to an active opening mechanism for a rear door of a dump truck. Background Art

[0002] A self-unloading vehicle is a type of truck that can unload cargo by itself through hydraulic or mechanical lifting. It is commonly known as a rear eight-wheel truck. The carriage on the truck can be lifted to a tilted position by a lifting mechanism for unloading.

[0003] In the prior art, a truck has a detachable tailgate at the rear of its compartment. Before the compartment is tilted to unload, the tailgate on the compartment needs to be opened first. Currently, the tailgate on the compartment is generally opened or closed manually. In actual use, due to the high body of the truck, the height of the tailgate is high, making manual disassembly difficult. At the same time, when too much cargo is loaded in the compartment, the cargo will be directly discharged when the tailgate is opened, resulting in a high risk in the tailgate opening process. Therefore, an active opening mechanism for the rear door of a dump truck is proposed. Utility Model Content

[0004] The utility model aims to provide an active opening mechanism for the rear door of a dump truck to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dump truck rear door active opening mechanism, comprising a rear door and a car body tail frame for carrying the rear door, a hydraulic cylinder A is provided between the rear door and the car body tail frame, and the hydraulic cylinder A is used to drive the top of the rear door to rotate around a fixed point position on the outer wall of the car body tail frame;

[0006] The front of the rear door is provided with an inwardly recessed mounting groove, and a locking structure is provided in the mounting groove. The locking structure is used for automatically locking the position between the rear door and the tail frame of the vehicle.

[0007] Preferably, a hinge is fixedly installed between the top end of the rear door and the outer wall of the tail frame of the vehicle body, and the hinge is multiple and arranged at intervals.

[0008] Preferably, both ends of the hydraulic cylinder A are fixedly connected with round head blocks, the middle part of the round head block is inserted with a limit pin, the external movable sleeve of the round head block is provided with a hinge seat, and the two ends of the limit pin are respectively movably inserted with the side walls of the hinge seat, the outer wall of the hinge seat located at one end of the hydraulic cylinder A is fixedly connected to the top of the front side of the tail frame of the car, and the outer wall of the hinge seat located at the other end of the hydraulic cylinder A is fixedly connected to the bottom of the outer wall of the rear door of the car.

[0009] Preferably, the locking structure is provided with two groups and is symmetrically arranged on both sides of the hydraulic cylinder A. The locking structure includes a plug-in structure and a driving mechanism arranged between the rear door and the tail frame of the vehicle. The driving mechanism is used to drive the plug-in structure to plug in and lock or pull out and unlock.

[0010] Preferably, the plug-in structure is in two groups and is respectively arranged on the side wall and bottom of the rear door of the vehicle. The plug-in structure includes a locking pin that is movably plugged with the outer wall of the rear door of the vehicle. One end of the locking pin extends into the interior of the mounting groove. One side and the bottom of the front side of the tail frame of the vehicle are fixedly connected with a locking socket. One end of the locking pin can be movably plugged with the inner side of the locking socket at the corresponding position.

[0011] Preferably, the driving mechanism includes a vertical hydraulic cylinder B and a horizontal hydraulic cylinder B fixedly arranged on the inner side of the mounting groove, and the telescopic ends of the vertical hydraulic cylinder B and the horizontal hydraulic cylinder B are respectively fixedly connected to one end of a locking pin at a corresponding position.

[0012] Technical effects and advantages of the utility model:

[0013] The utility model can realize automatic locking, limiting or unlocking between the rear door and the tail frame of the vehicle through the locking structure arranged in the mounting groove of the rear door, and then cooperate with the hydraulic cylinder A to drive the top of the rear door to automatically rotate around the top of the tail frame of the vehicle, so as to achieve the driving of the rear door to automatically rotate, open or close the locking, eliminating the cumbersome manual operation and the existing safety hazards, thereby improving work efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model when the rear door of the vehicle is closed.

[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model when the rear door of the vehicle is opened.

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the rear door and the tail frame of the vehicle of the utility model.

[0017] Figure 4 For this utility model Figure 3 Schematic diagram of the local enlarged structure at A.

[0018] Figure 5 For this utility model Figure 3 Schematic diagram of the local enlarged structure at point B.

[0019] In the figure: 100, rear door; 101, mounting groove; 200, tail frame of the carriage; 201, hinge; 300, hydraulic cylinder A; 301, round head block; 302, hinge seat; 303, limit pin; 400, locking structure; 401, vertical hydraulic cylinder B; 402, horizontal hydraulic cylinder B; 403, locking pin; 404, locking socket. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides Figure 1-5The active opening mechanism of the rear door of a dump truck shown in the figure comprises a rear door 100 and a tail frame 200 for carrying the rear door 100. A hinge 201 is fixedly installed between the top of the rear door 100 and the outer wall of the tail frame 200. The hinges 201 are multiple and arranged at intervals. The arrangement of the hinges 201 can realize the connection between the tail frame 200 and the top of the rear door 100. At the same time, the top of the rear door 100 can be rotated on the top of the tail frame 200 through the hinge 201, so that the rear door 100 can open or close the port at the rear of the car by rotating, so as to facilitate the opening of the car. During the unloading or closed transportation of the goods in the vehicle, a hydraulic cylinder A300 is arranged between the rear door 100 and the tail frame 200 of the vehicle. The hydraulic cylinder A300 is used to drive the top of the rear door 100 to rotate around the fixed position of the outer wall of the tail frame 200 of the vehicle. The chassis power take-off on the truck drives the gear pump to rotate, and the hydraulic cylinder A300 is controlled to extend or shorten through the multi-way valve and the hydraulic oil pipe (wherein the hydraulic cylinder A300 is in the initial position when extended, and the rear door 100 is in the closed state at this time). During the shortening process of the hydraulic cylinder A300, the rear door 100 is driven to rotate upward through the hinge 201 to open the rear door 100, and vice versa. The rear door 100 is closed and the rear door 100 is automatically opened or closed. The staff only needs to operate the handle or button externally, and there is no need to perform manual operation at the rear door 100 position. The work is efficient and convenient, and the safety hazard in the opening process of the rear door 100 is eliminated. Preferably, both ends of the hydraulic cylinder A300 are fixedly connected with a round head block 301, and the middle part of the round head block 301 is plugged with a limit pin 303. The outer movable sleeve of the round head block 301 is provided with a hinge seat 302, and the two ends of the limit pin 303 are respectively movably plugged with the side walls of the hinge seat 302, which is located at one end of the hydraulic cylinder A300. The outer wall of the hinged seat 302 at the position is fixedly connected to the top front face of the car tail frame 200, and the outer wall of the hinged seat 302 at the other end of the hydraulic cylinder A300 is fixedly connected to the bottom outer wall of the rear door 100. By using the round head block 301, the limit pin shaft 303 and the hinged seat 302 in coordination, the two ends of the hydraulic cylinder A300 can be connected to the outer walls of the rear door 100 and the car tail frame 200 respectively, and at the same time, the two ends of the hydraulic cylinder A300 can be rotated at the positions of the outer walls of the rear door 100 and the car tail frame 200, so that the hydraulic cylinder A300 can drive the rear door 100 to rotate by telescopic driving.

[0022] The front of the rear door 100 is provided with an inwardly recessed mounting groove 101, and a locking structure 400 is provided in the mounting groove 101. The locking structure 400 is used for automatically locking the position between the rear door 100 and the tail frame 200 of the vehicle. The locking structure 400 locks the two sides and the bottom between the rear door 100 and the tail frame 200 of the vehicle, so that the rear door 100 and the tail frame 200 are kept fixed and cannot be opened and closed by rotation. In this way, the stability of the rear door 100 after closing on the tail frame 200 of the vehicle can be enhanced; in a preferred embodiment, the locking structure 400 is provided with two groups and symmetrical The two sets of locking structures 400 are arranged on both sides of the hydraulic cylinder A300, and can realize double locking of the bottom corners on both sides of the rear door 100, thereby enhancing the firmness of the locking. The locking structure 400 includes a plug-in structure and a driving mechanism arranged between the rear door 100 and the tail frame 200 of the vehicle, and the driving mechanism is used to drive the plug-in structure to plug in and lock or pull out and unlock; wherein, the plug-in structure is two sets and is respectively arranged on the side wall and the bottom position of the rear door 100 of the vehicle, and the plug-in structure includes a locking pin 403 that is movably plugged with the outer wall of the rear door 100 of the vehicle, and one end of the locking pin 403 extends to the mounting groove 10 1, one side and the bottom of the front of the car tail frame 200 are fixedly connected with a locking socket 404, one end of the locking pin 403 can be movably plugged with the inner side of the locking socket 404 at the corresponding position, and the locking pin 403 is driven by the driving mechanism to extend from the outer wall of the rear door 100, so that the end of the locking pin 403 is inserted into the inner side of the locking socket 404 on the car tail frame 200, so that the purpose of limiting can be achieved, so that the rear door 100 and the car tail frame 200; further, the driving mechanism includes a vertical hydraulic cylinder B401 and a horizontal hydraulic cylinder B402 fixedly arranged on the inner side of the mounting groove 101 The telescopic ends of the vertical hydraulic cylinder B401 and the horizontal hydraulic cylinder B402 are respectively fixedly connected to one end of the locking pin 403 at the corresponding position. The vertical hydraulic cylinder B401 and the horizontal hydraulic cylinder B402 drive the gear pump to rotate through the chassis power take-off on the truck. The vertical hydraulic cylinder B401 and the horizontal hydraulic cylinder B402 are controlled by the multi-way valve and the hydraulic oil pipe to extend or shorten the vertical hydraulic cylinder B401 and the horizontal hydraulic cylinder B402. In this way, the end of the locking pin 403 can be inserted into the inner side of the locking socket 404 at the corresponding position or withdrawn from the inner side of the locking socket 404, so as to lock or unlock the position between the rear door 100 and the tail frame 200 of the vehicle.

[0023] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dump truck rear door active opening mechanism, comprising a rear door (100) and a vehicle tail frame (200) for supporting the rear door (100), characterized in that: A hydraulic cylinder A (300) is provided between the rear door (100) and the tail frame (200), and the hydraulic cylinder A (300) is used to drive the top of the rear door (100) to rotate around a fixed point on the outer wall of the tail frame (200); The front of the vehicle rear door (100) is provided with an inwardly recessed installation groove (101), and a locking structure (400) is provided in the installation groove (101). The locking structure (400) is used for automatically locking the position between the vehicle rear door (100) and the vehicle tail frame (200).

2. The active opening mechanism for the rear door of a dump truck according to claim 1, characterized in that: A hinge (201) is fixedly installed between the top end of the vehicle rear door (100) and the outer wall of the vehicle tail frame (200), and the hinges (201) are multiple and arranged at intervals.

3. The active opening mechanism for the rear door of a dump truck according to claim 1, characterized in that: Both ends of the hydraulic cylinder A (300) are fixedly connected with round head blocks (301), a limit pin shaft (303) is inserted in the middle of the round head block (301), an external movable sleeve of the round head block (301) is provided with a hinge seat (302), and both ends of the limit pin shaft (303) are respectively movably inserted with the side walls of the hinge seat (302), the outer wall of the hinge seat (302) located at one end of the hydraulic cylinder A (300) is fixedly connected to the top of the front face of the car tail frame (200), and the outer wall of the hinge seat (302) located at the other end of the hydraulic cylinder A (300) is fixedly connected to the bottom of the outer wall of the rear door (100).

4. The active opening mechanism for the rear door of a dump truck according to claim 1, characterized in that: The locking structure (400) is provided with two groups and is symmetrically arranged at two sides of the hydraulic cylinder A (300). The locking structure (400) comprises a plug-in structure and a driving mechanism arranged between the rear door (100) and the tail frame (200). The driving mechanism is used to drive the plug-in structure to be plugged in and locked or pulled out and unlocked.

5. The active opening mechanism for the rear door of a dump truck according to claim 4, characterized in that: The plug-in structure comprises two groups and is respectively arranged at the side wall and the bottom of the vehicle rear door (100), the plug-in structure comprises a locking pin (403) movably plugged with the outer wall of the vehicle rear door (100), one end of the locking pin (403) extends into the interior of the installation groove (101), one side and the bottom of the front side of the vehicle tail frame (200) are fixedly connected with a locking socket (404), and one end of the locking pin (403) can be movably plugged with the inner side of the locking socket (404) at a corresponding position.

6. The active opening mechanism for the rear door of a dump truck according to claim 5, characterized in that: The driving mechanism comprises a vertical hydraulic cylinder B (401) and a horizontal hydraulic cylinder B (402) fixedly arranged inside the mounting groove (101), wherein the telescopic ends of the vertical hydraulic cylinder B (401) and the horizontal hydraulic cylinder B (402) are respectively fixedly connected to one end of a locking latch (403) at a corresponding position.

Images