Rear door hydraulic opening and locking structure
The rear door is rotated by a rack driven by a hydraulic cylinder, combined with a buffer structure, which solves the problems of laborious operation and safety hazards caused by the heavy weight of the rear door of a large transport vehicle, and realizes convenient and safe opening and closing.
Patent Information
- Application Number
- CN202520080835.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-01-14
AI Technical Summary
The rear doors of large transport vehicles are heavy, making them difficult to open or lock manually and difficult to control the opening angle, which can easily injure staff.
The system uses a hydraulic cylinder to drive the rack and pinion to extend and retract. The meshing action controls the rotation of the gears and the rotating rod, which in turn opens or closes the rear door. A buffer structure is also used to prevent injury from inertia.
It enables effortless opening and locking of the rear door, allows precise control of the opening angle, avoids injury from inertia, and improves operational convenience and safety.
Smart Images
Figure CN223805995U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the transport vehicle compartment technical field especially is rear door hydraulic pressure opening and locking structure. BACKGROUND
[0002] At present, the rear door of the compartment of large transport vehicle is mainly designed into double-leaf rotary swing doors, but this kind of swing door is mainly opened or locked by manpower, and due to the heavy weight of the door body of the compartment, more manpower is needed to make it rotate to open or lock in the process, and when the box door is rotated to open under the action of its own inertia, it is inconvenient to control the opening angle and easy to injure the staff standing around the tail of the vehicle.
[0003] Therefore, we propose the rear door hydraulic pressure opening and locking structure to solve the above problems. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at providing rear door hydraulic pressure opening and locking structure to solve the problems proposed in the background art.
[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0006] The rear door hydraulic pressure opening and locking structure comprises a shaft sleeve and a rotating rod which are connected in rotation, the shaft sleeve is fixed at the rear end port edge of a box body, the rotating rod is fixed with the inner wall of a rear box door through a connecting block, a gear is coaxially connected to the rotating rod, a rack is meshingly connected to the peripheral edge of the gear, a hydraulic cylinder is installed at the end of the rack away from the rear box door, the hydraulic cylinder is fixed with the top plate of the box body through a mounting frame, and the hydraulic cylinder drives the rack to stretch or retract, thereby controlling the gear and the rotating rod to drive the rear box door to rotate to open or lock.
[0007] In a further embodiment, a sliding block is fixed on the rack, and a straight rail is slidably penetrated in the sliding block, and the straight rail is fixed with the top plate of the box body.
[0008] In a further embodiment, the rack and the output end of the hydraulic cylinder are both provided with connecting discs, and the two connecting discs are locked and connected through a plurality of bolts and nuts.
[0009] In a further embodiment, an end plate is installed at the end of the rack close to the rear box door, a buffer plate is installed in front of the end plate through a spring and a guide rod, the spring is fixed between the buffer plate and the end plate, one end of the guide rod is fixed with the buffer plate, the other end is slidably penetrated in the front and rear surfaces of the end plate, and the guide rod penetrates the inside of the spring.
[0010] In a further embodiment, the spring and the guide rod are distributed in a quadrangular symmetry between the buffer plate and the end plate.
[0011] In a further embodiment, a buffer pad is connected to the front end surface of the buffer plate.
[0012] In further embodiments, the cushion abuts the inner wall of the tailgate when the tailgate is locked.
[0013] Compared with the prior art, the utility model has the beneficial effects that:
[0014] The utility model discloses a hydraulic cylinder drives rack telescoping, utilizes the meshing effect control gear and the rotation of the rotary lever, and then drives the rotation of the tailgate and opens or locks, so that the opening or locking of the tailgate can no longer only rely on manual operation, and it is more convenient to use, and through the telescopic length of the control rack, the angle of the rotation of the tailgate can be adjusted, and the surrounding staff can be prevented from being hurt by the inertia rotation of the tailgate. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 It is partial box body and the structure schematic view when installing the tailgate of the utility model;
[0016] Fig. 2 It is the structure schematic view when installing the partial box body and the tailgate of the utility model from the perspective;
[0017] Fig. 3 It is the front view schematic view of the main body structure of the utility model.
[0018] In the drawing: 1, box body;2, shaft sleeve;3, tailgate;4, connecting block;5, rotary lever;6, gear;7, rack;8, hydraulic cylinder;9, mounting frame;10, sliding block;11, straight rail;12, connecting disc;13, end plate;14, buffer plate;15, spring;16, guide rod;17, cushion. DETAILED DESCRIPTION
[0019] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0020] In the description of the utility model, it is necessary to explain that, unless there are explicit provisions and limitations, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or it can be detachable connection, or it can be integrally connected, it can be mechanical connection, or it can be electrical connection, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements.
[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.
[0022] Please refer to Figs. 1-3 , the back door hydraulic opening and locking structure, including shaft sleeve 2 and rotating rod 5, rotating rod 5 penetrates the inside of shaft sleeve 2, and can rotate in shaft sleeve 2, shaft sleeve 2 is fixed on the rear end of the edge of the box body 1, the connecting block 4 is fixed on the outer wall of the rotating rod 5, the shaft sleeve 2 is multi-section type, the connecting block 4 extends out of the shaft sleeve 2 and is fixed with the inner wall of the rear box door 3, so that when the rotating rod 5 rotates, the rear box door 3 is driven to rotate and open or lock, the gear 6 is coaxially connected on the rotating rod 5, the gear 6 is meshed with the rack 7 on the periphery edge, and the rack 7 is installed on the end away from the rear box door 3, the hydraulic cylinder 8 is fixed with the top plate of the box body 1 through the mounting bracket 9, when the hydraulic cylinder 8 drives the rack 7 to extend and retract, the rotation of the gear 6 and the rotating rod 5 is controlled by using the meshing effect, and then the rear box door 3 is driven to rotate and open or lock, which not only saves labor, but also avoids the rear box door 3 from being opened and hurt due to inertia.
[0023] The sliding block 10 is fixed on the rack 7, and the straight rail 11 is slidably penetrated in the sliding block 10, and the straight rail 11 is fixed with the top plate of the box body 1, when the rack 7 extends and moves, the sliding block 10 is driven to slide along the straight rail 11, and then the rack 7 is limited by using the sliding action between the sliding block 10 and the straight rail 11, the stability of the rack 7 is improved when extending and moving, and the deviation is prevented.
[0024] In order to facilitate the maintenance in the later period, the output ends of the rack 7 and the hydraulic cylinder 8 are provided with connecting discs 12, and the two connecting discs 12 are locked and connected through a plurality of bolts and nuts, so that the rack 7 and the hydraulic cylinder 8 can be disassembled.
[0025] Considering that the impact force on the rear box door 3 itself is large when the rear box door 3 is closed and directly buckled at the rear end of the box body 1, the rear box door 3 is easily deformed and damaged, therefore, the end plate 13 is installed at one end of the rack 7 close to the rear box door 3, and the buffer plate 14 is installed in front of the end plate 13 through the spring 15, the both ends of the spring 15 are fixed with the buffer plate 14 and the end plate 13 respectively, and the guide rod 16 is further penetrated in the spring 15, one end of the guide rod 16 is fixed with the buffer plate 14, and the other end is slidably penetrated through the front and rear surfaces of the end plate 13, so that when the rear box door 3 is closed, the buffer plate 14 is first contacted and extruded, the buffer plate 14 compresses the spring 15, and the rear box door 3 is further buffered.
[0026] Further, the spring 15 and the guide rod 16 are distributed in four corners between the buffer plate 14 and the end plate 13, so that the buffer distribution between the buffer plate 14 and the end plate 13 is more uniform, and the front end surface of the buffer plate 14 is connected with the buffer pad 17, the buffer pad 17 is made of elastic rubber material, so as to tightly adhere to the inner wall of the rear box door 3 when the rear box door 3 is locked, and further improve the buffering effect.
[0027] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.
[0028] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.
Claims
1. A hydraulic opening and locking structure of a rear door, comprising a shaft sleeve (2) and a rotating rod (5) connected in rotation, characterized in that: The shaft sleeve (2) is fixed on the rear end of the box (1), the rotating rod (5) is fixed on the inner wall of the rear box door (3) through the connecting block (4), the rotating rod (5) is coaxially connected with the gear (6), the gear (6) is connected with the rack (7) on the outer edge, the rack (7) is installed with the hydraulic cylinder (8) away from the rear box door (3), the hydraulic cylinder (8) is fixed on the top plate of the box (1) through the mounting bracket (9), when the hydraulic cylinder (8) drives the rack (7) to stretch out or retract, the gear (6) and the rotating rod (5) drive the rear box door (3) to rotate and open or lock.
2. The hydraulic opening and locking structure of a rear door according to claim 1, characterized in that: The sliding block (10) is fixed on the rack (7), and the straight rail (11) is slidably penetrated in the sliding block (10), and the straight rail (11) is fixed on the top plate of the box (1).
3. The hydraulic opening and locking structure of a rear door according to claim 1, characterized in that: The connecting disc (12) is arranged on the rack (7) and the output end of the hydraulic cylinder (8), and the two connecting discs (12) are connected by a plurality of bolts and nuts.
4. The hydraulic opening and locking structure of a rear door according to claim 1, characterized in that: The end plate (13) is installed on one end of the rack (7) close to the rear box door (3), the buffer plate (14) is installed in front of the end plate (13) through the spring (15) and the guide rod (16), the spring (15) is fixed between the buffer plate (14) and the end plate (13), one end of the guide rod (16) is fixed with the buffer plate (14), the other end is slidably penetrated through the front and rear surfaces of the end plate (13), and the guide rod (16) penetrates the inside of the spring (15).
5. The hydraulic opening and locking structure of a rear door according to claim 4, characterized in that: The spring (15) and the guide rod (16) are distributed symmetrically between the buffer plate (14) and the end plate (13).
6. The hydraulic opening and locking structure of a rear door according to claim 4, characterized in that: The buffer pad (17) is connected to the front end surface of the buffer plate (14).
7. The hydraulic opening and locking structure of a rear door according to claim 6, characterized in that: When the rear box door (3) is locked, the buffer pad (17) is tightly attached to the inner wall of the rear box door (3).