Thermal insulation carriage rear door limiting device and thermal insulation transport vehicle
By designing a thermal insulation car rear door limit device including hydraulic cylinders and limiting components, the problem of material leakage caused by lax rear door limits of traditional dump trucks is solved, and higher sealing and service life are achieved, and operation is simplified.
Patent Information
- Application Number
- CN202422120140.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-30
AI Technical Summary
When transporting hot asphalt mixture or other materials, the rear door limiting device of traditional dump trucks is difficult to effectively lock during road bumps, resulting in material leakage from the gap at the rear door, causing material waste and environmental pollution.
A thermal insulation car rear door limit device is designed, including a movable rear door, rear door hydraulic cylinder, limit hydraulic cylinder, limit plate and limit shaft. The limit plate is driven to rotate through the hydraulic cylinder to realize the matching limit slot and limit shaft or release the limit position, ensuring the sealing of the rear door.
The device enables more precise control of the position of the rear door, improves sealing performance, reduces wear of mechanical components, extends service life, and simplifies operation through the remote control and improves safety.
Smart Images
Figure CN222905391U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a rear door limiting device of a heat-insulating carriage and a heat-insulating transport vehicle, belonging to the field of road transport equipment. Background Art
[0002] When the insulated transport truck is transporting hot asphalt mixture or other materials, in order to prevent the materials from leaking out of the rear door during transportation, the traditional dump truck generally uses a connecting rod locking device for limiting. Due to road bumps and other conditions during transportation, some materials will still leak out from the gap at the rear door, which will cause material waste and environmental pollution during long-distance transportation. Summary of the invention
[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides a rear door limiting device of an insulated compartment and an insulated transport vehicle, which can effectively lock the rear door, is easy to operate, and has better sealing and safety.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts a thermal insulation compartment rear door limiting device, comprising:
[0005] car;
[0006] A movable rear door, the upper end of which is hinged at the rear end of the vehicle compartment, a rear door hydraulic cylinder is installed between the movable rear door and the vehicle compartment, and the rear door hydraulic cylinder is used to drive the movable rear door to open or close;
[0007] The limiting assembly includes a limiting hydraulic cylinder installed on the side of the vehicle body, a limiting plate rotatably installed on the side of the vehicle body, and a limiting shaft installed at the lower end of the movable rear door. One end of the limiting plate is hinged to the limiting hydraulic cylinder, and the other end is provided with a limiting groove that cooperates with the limiting shaft. The limiting hydraulic cylinder drives the limiting plate to rotate to achieve the cooperation between the limiting groove and the limiting shaft to limit or release the limit.
[0008] In some embodiments, a cylinder fixing seat is provided in the middle of the rear end of the vehicle body, a cylinder mounting seat is provided in the middle of the movable rear door, the cylinder barrel of the rear door hydraulic cylinder is hinged to the cylinder fixing seat, and the piston rod is hinged to the cylinder mounting seat.
[0009] In some embodiments, the limit plate is in an inverted T-shape, with a rotating shaft hole in the middle, and the limit plate is rotatably connected to the carriage via the rotating shaft.
[0010] In some embodiments, the limiting groove is a circular groove, and the diameter of the limiting groove is larger than the diameter of the limiting shaft.
[0011] In some embodiments, a smoothly transitioned protrusion is provided on the outer side of the limiting groove.
[0012] In some embodiments, one end of the limiting hydraulic cylinder is installed on the side of the carriage through a hydraulic cylinder seat, and the other end is hinged to the limiting plate through a pin shaft.
[0013] In some embodiments, the two limiting assemblies are symmetrically installed on both sides of the vehicle compartment.
[0014] In some embodiments, hinge shafts are provided on both sides of the upper end of the movable rear door, and hinge seats hinged to the hinge shafts are provided on both sides of the vehicle compartment.
[0015] In some embodiments, a remote controller for remotely controlling the movable rear door and / or the limiting assembly is also included.
[0016] A second aspect of the utility model provides a heat-insulating transport vehicle, on which the heat-insulating compartment rear door limiting device is installed.
[0017] Compared with the prior art, the insulated compartment rear door limit device of the utility model has more precise position control capability. The limit device can be adjusted to achieve accurate position control within the travel range of the hydraulic cylinder, thereby improving the sealing performance of the rear door, and having good sealing and stability. By controlling the travel range of mechanical parts, the limit device can reduce the wear and damage of mechanical parts, thereby extending their service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1 It is a structural schematic diagram of the utility model;
[0020] Figure 2 It is a side view of the utility model;
[0021] Figure 3 This is a schematic diagram of the limit assembly of the utility model in a locked state;
[0022] Figure 4 This is a schematic diagram of the limit assembly of the utility model in an open state;
[0023] In the figure: 1, carriage, 11, hydraulic cylinder seat, 12, pin shaft 1, 13, pin shaft 2, 14, rotating shaft, 2, movable rear door, 21, cylinder fixing seat, 22, pin shaft 3, 23, pin shaft 4, 24, cylinder mounting seat, 25, limiting shaft, 3, rear door hydraulic cylinder, 4, limiting hydraulic cylinder, 5, limiting plate, 51, rotating shaft hole, 52, limiting groove, 53, protrusion. DETAILED DESCRIPTION
[0024] In order to make the objectives, technical solutions and advantages of the present invention more clear, the technical solutions of the present application are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.
[0025] In the description of the present invention, it is necessary to understand that the terms "rear", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the protection content of the present invention.
[0026] like Figure 1-Figure 4 As shown, a rear door limiter for a heat-insulating carriage comprises a carriage 1, a movable rear door 2 movably mounted on the carriage 1, and a limiter assembly mounted between the carriage 1 and the movable rear door 2 for locking the rear door;
[0027] The upper end of the movable rear door 2 is hinged at the rear end of the carriage 1, and a rear door hydraulic cylinder 3 is installed between the movable rear door 2 and the carriage 1, and the rear door hydraulic cylinder 3 is used to drive the movable rear door 2 to open or close;
[0028] The limiting assembly includes a limiting hydraulic cylinder 4 installed on the side of the carriage 1, a limiting plate 5 rotatably installed on the side of the carriage 1, and a limiting shaft 25 installed at the lower end of the movable rear door 2. One end of the limiting plate 5 is hinged to the limiting hydraulic cylinder 4, and the other end is provided with a limiting groove 52 that cooperates with the limiting shaft 25. The limiting hydraulic cylinder 4 drives the limiting plate 5 to rotate to achieve the cooperation between the limiting groove 52 and the limiting shaft 25 to limit or release the limit.
[0029] In some embodiments, Figure 1As shown, a cylinder fixing seat 21 is provided in the middle of the rear end of the carriage 1, and a cylinder mounting seat 24 is provided in the middle of the movable rear door 2. The cylinder barrel of the rear door hydraulic cylinder 3 is hinged to the cylinder fixing seat 21 through a pin shaft 3 22, and the piston rod is hinged to the cylinder mounting seat 24 through a pin shaft 4 23, ensuring that the rear door hydraulic cylinder 3 can be smoothly extended or contracted, thereby controlling the closing or opening of the movable rear door 2.
[0030] In some embodiments, Figure 3 , Figure 4 As shown, the limit plate 5 is in an inverted T shape, and a rotating shaft hole 51 is opened in the protruding middle of the limit plate 5. A rotating shaft 14 is installed in the rotating shaft hole 51, and the limit plate 5 is rotatably connected to the carriage 1 through the rotating shaft 14. When the limit hydraulic cylinder 4 drives the limit plate 5, the limit plate 5 can rotate with the rotating shaft 14 as a fulcrum.
[0031] In some embodiments, Figure 3 , Figure 4 As shown, the limiting groove 52 is a circular groove, and the diameter of the limiting groove 52 is larger than the diameter of the limiting shaft 25, so as to ensure that the limiting shaft 25 can be effectively installed in the limiting groove 52 and play a locking effect.
[0032] In some embodiments, Figure 3 , Figure 4 As shown, a smoothly transitioning protrusion 53 is provided on the outer side of the limiting groove 52. When the movable rear door 2 is closed or opened, the limiting shaft 25 can slide along the protrusion 53 into the limiting groove 52 to avoid component damage caused by mechanical collision.
[0033] In some embodiments, Figure 1-Figure 4 As shown, the cylinder barrel of the limiting hydraulic cylinder 4 is hinged on the hydraulic cylinder seat 11 through a pin shaft 12, the hydraulic cylinder seat 11 is bolted to the side of the car body 1, and the piston rod of the limiting hydraulic cylinder 4 is hinged to the limiting plate 5 through a pin shaft 2 13. By extending and retracting the limiting hydraulic cylinder 4, the limiting plate 5 is controlled to rotate, so that the limiting shaft 25 enters or leaves the limiting groove 52, thereby realizing the opening and locking function of the movable rear door 2 by the limiting device.
[0034] In some embodiments, in order to improve the locking effect of the rear door, two limit assemblies may be used, and the two limit assemblies are symmetrically installed on both sides of the vehicle compartment 1.
[0035] In some embodiments, hinge shafts are provided on both sides of the upper end of the movable rear door 2, and hinge seats hinged to the hinge shafts are provided on both sides of the vehicle body 1 to ensure that the movable rear door 2 can be effectively hinged to the vehicle body 1.
[0036] In some embodiments, a remote controller is also included for remotely controlling the movable rear door 2 and / or the limiting assembly. The extension and retraction of the rear door hydraulic cylinder 3 and / or the limiting hydraulic cylinder 4 are controlled by the remote controller, thereby controlling the opening and closing of the movable rear door 2 and / or the movement of the limiting plate 5. The operation is simple, and the sealing and safety are better.
[0037] Finally, the utility model also provides a heat-insulating transport vehicle, on which the heat-insulating carriage rear door limiting device is installed.
[0038] When using:
[0039] During normal transportation and pulling, if Figure 1 and Figure 2 As shown, at this time, the rear door hydraulic cylinder 3 and the limit hydraulic cylinder 4 are both in a fully extended state, the limit plate 5 is in a horizontal state, and the limit shaft 25 of the movable rear door 2 is in the limit groove 52 of the limit plate 5. At this time, it is in a locked state, and the movable rear door 2 is completely locked and sealed against the rear end of the vehicle compartment 1, and cannot move;
[0040] When unloading, the remote controller can be operated in the cab or beside the vehicle compartment, and the piston rods of the limit hydraulic cylinder 4 and the rear door hydraulic cylinder 3 will slowly shrink under the control of the vehicle hydraulic system, and the limit shaft 25 of the movable rear door 2 will be disengaged from the limit groove 52 under the action of the shrinkage of the piston rod, and the movable rear door 2 will flip along the hinge shaft position at the upper end, and the movable rear door 2 will flip and open to the limit position. At this time, the limit hydraulic cylinder 4 and the rear door hydraulic cylinder 3 are in a fully retracted state;
[0041] When unloading is completed, the piston rods of the limit hydraulic cylinder 4 and the rear door hydraulic cylinder 3 can be slowly extended by operating the remote control in the cab or beside the carriage. Similarly, in contrast to the opening action of the movable rear door 2, the limit hydraulic cylinder 4 and the rear door hydraulic cylinder 3 are in a fully extended state, and the limit shaft 25 of the movable rear door 2 moves into the limit groove 52 of the limit plate 5, thereby achieving a completely locked state of the movable rear door 2, which is sealed against the rear end of the carriage 1 and cannot be moved.
[0042] The limit device for the rear door of the insulated compartment of the utility model has a more precise position control capability. The limit device can realize accurate position control within the travel range of the hydraulic cylinder through adjustment, thereby improving the sealing performance of the rear door, and having good sealing and stability. By controlling the travel range of mechanical parts, the limit device can reduce the wear and damage of mechanical parts, thereby extending their service life.
[0043] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present utility model and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by the present application.
Claims
1. A rear door limiter for a heat preservation compartment, characterized in that: include: Carriage (1); A movable rear door (2), the upper end of the movable rear door (2) being hinged to the rear end of the vehicle compartment (1), a rear door hydraulic cylinder (3) being installed between the movable rear door (2) and the vehicle compartment (1), the rear door hydraulic cylinder (3) being used to drive the movable rear door (2) to open or close; The limiting assembly comprises a limiting hydraulic oil cylinder (4) installed on the side of a vehicle body (1), a limiting plate (5) rotatably installed on the side of the vehicle body (1), and a limiting shaft (25) installed at the lower end of a movable rear door (2); one end of the limiting plate (5) is hinged to the limiting hydraulic oil cylinder (4), and the other end is provided with a limiting groove (52) matched with the limiting shaft (25); the limiting hydraulic oil cylinder (4) drives the limiting plate (5) to rotate, so as to achieve matching limiting or releasing of the limiting groove (52) and the limiting shaft (25).
2. The rear door limiter of a heat preservation compartment according to claim 1, characterized in that: A cylinder fixing seat (21) is provided in the middle of the rear end of the carriage (1), a cylinder mounting seat (24) is provided in the middle of the movable rear door (2), the cylinder barrel of the rear door hydraulic cylinder (3) is hinged to the cylinder fixing seat (21), and the piston rod is hinged to the cylinder mounting seat (24).
3. The rear door limiter of a heat preservation compartment according to claim 1, characterized in that: The limiting plate (5) is in an inverted T-shape, with a rotating shaft hole (51) opened in the middle, and the limiting plate (5) is rotatably connected to the carriage (1) via a rotating shaft (14).
4. A thermal insulation compartment rear door limiting device according to claim 1 or 3, characterized in that: The limiting groove (52) is a circular groove, and the diameter of the limiting groove (52) is greater than the diameter of the limiting shaft (25).
5. The rear door limit device of a heat preservation compartment according to claim 4, characterized in that: A smoothly transitioning protrusion (53) is provided on the outer side of the limiting groove (52).
6. A thermal insulation compartment rear door limiting device according to claim 1 or 3, characterized in that: One end of the limit hydraulic cylinder (4) is installed on the side of the carriage (1) through a hydraulic cylinder seat (11), and the other end is hinged to the limit plate (5) through a pin shaft.
7. The thermal insulation compartment rear door limiting device according to claim 1, characterized in that: The two limit assemblies are symmetrically mounted on both sides of the carriage (1).
8. The rear door limit device of a heat preservation compartment according to claim 1, characterized in that: Hinge shafts are provided on both sides of the upper end of the movable rear door (2), and hinge seats hingedly connected to the hinge shafts are provided on both sides of the carriage (1).
9. The thermal insulation compartment rear door limiting device according to claim 1, characterized in that: It also includes a remote controller for remotely controlling the movable rear door (2) and / or the limit assembly.
10. A heat preservation transport vehicle, characterized in that: The insulated transport vehicle is equipped with the insulated compartment rear door limiting device according to any one of claims 1 to 9.