A carriage with a rear door two-way opening device and a dump truck
Patent Information
- Application Number
- CN202522374018.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-11-10
AI Technical Summary
[0004]本实用新型提供一种具有后门双向开启装置的车厢及自卸车，具有后门双向开启装置的车厢旨在能够解决现有技术中在向自卸车上装载物料的过程中，后门无法自动开启并保持开启状态而导致的操作繁琐的问题
[0014]本实用新型提供的一种具有后门双向开启装置的车厢的有益效果在于：与现有技术相比，车斗尾部具有侧开口，在侧开口处设有后门，用于封堵侧开口。在车斗的侧开口处设有转接件，且转接件位于车斗顶部。转接件具有转接安装部，转接安装部的轴线沿竖直方向设置。第一连接结构设置在转接安装部上，且第一连接结构供后门的一端转动连接。沿车斗的宽度方向，第二连接结构与第一连接结构间隔设置，且第二连接结构设置在车斗上，第二连接结构供后门的另一端可拆卸转动连接。从而当后门与第一连接结构及第二连接结构均连接时，可向上旋转后门将其打开。在将车斗上的货物卸下的过程中，车斗会举升，在重力作用下后门打开一定的角度卸货。当后门仅与第一连接结构连接时，可侧向旋转打开后门，此时可通过侧开口向车斗上装载货物，此过程无需外力车门即可保持开启状态，省时省力，操作便捷。
Smart Images
Figure CN224898679U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of dump truck manufacturing technology, specifically relating to a dump truck and a cargo box with a two-way opening device for the rear door. Background Technology
[0002] Dump trucks are vehicles that unload goods themselves using hydraulic or mechanical lifting; they are also known as tipper trucks. They consist of a truck chassis, a hydraulic lifting mechanism, a cargo box, and a rear door. Dump trucks are mainly used for transporting soil, sand, coal, and long, thin objects (such as wood).
[0003] In existing technology, materials are unloaded from a dump truck by opening its rear door. The rear door is connected to the truck bed via hinges, and a locking hook is installed at the lower end of the rear door to lock it in place. During lifting, the locking hook is removed, and the rear door opens to a certain angle under gravity for unloading. However, when loading materials onto the truck, the rear door cannot open automatically, and opening it requires external force and tools to support it, making the operation cumbersome, time-consuming, and labor-intensive, resulting in poor practicality. Utility Model Content
[0004] This utility model provides a truck body and a dump truck with a rear door bidirectional opening device. The purpose of the truck body with the rear door bidirectional opening device is to solve the problem of cumbersome operation caused by the rear door not being able to open automatically and remain open during the loading of materials onto the dump truck in the prior art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a truck body and a dump truck with a rear door bidirectional opening device, wherein the truck body with the rear door bidirectional opening device includes: The truck bed has an open-ended receiving cavity, and the rear of the truck bed has a side opening; The rear door is located at the side opening; An adapter is provided on the top of the truck bed and located at the side opening. The adapter has an adapter mounting portion with its axis arranged in a vertical direction. A first connecting structure is provided on the adapter mounting part for rotatably connecting one end of the rear door; The second connecting structure is spaced apart from the first connecting structure along the width direction of the truck bed and is disposed on the truck bed, allowing the other end of the rear door to be detachably and rotatably connected. The rear door is horizontally positioned relative to the rotation axis of the first connecting structure and / or the second connecting structure, and perpendicular to the rotation axis of the adapter mounting portion.
[0006] In one possible implementation, the adapter includes: An upper fixing seat is fixedly connected to the truck bed, and the upper fixing seat has mounting holes; A rotating shaft is rotatably disposed in the mounting hole, and the axis of rotation of the rotating shaft is arranged in the vertical direction; the rotating shaft is the adapter mounting part. The connecting rod is fixedly connected to the rotating shaft.
[0007] In one possible implementation, the adapter further includes: Two limiting plates are provided, and the two limiting plates are fixedly installed on the truck bed. The two limiting plates are spaced apart in the vertical direction. A fixing pin is detachably connected to the two limiting plates and is used to connect the rear door to the limiting plates. The rear door is provided with an insert block installed between the two limiting plates. The insert block has a pin hole for the fixing pin to pass through, and the rear door is rotatably connected to the fixing pin.
[0008] In one possible implementation, the first connection structure includes a fixed shaft connected to the connecting rod, the fixed shaft being used for rotatable connection of the rear door, and the central axis of the fixed shaft being arranged along the width direction of the truck bed; The rear door is provided with a plug hole that is adapted to the fixed shaft.
[0009] In one possible implementation, the second connection structure includes: A card holder is fixedly mounted on the truck bed, and the card holder is provided with a slot. A limiting post is detachably connected to the card seat, and the limiting post and the card seat together form an installation slot; The card holder is provided with a limiting hole for mounting the limiting post.
[0010] In one possible implementation, the rear door is provided with a locking post, which is rotatably disposed in the mounting slot; the rotation axis of the locking post is arranged along the width direction of the truck bed.
[0011] In one possible implementation, the rear door is provided with a handle.
[0012] In one possible implementation, the carriage with the rear door bidirectional opening device further includes a plug bar; the rear door is provided with a first plug hole adapted to the plug bar, and the cargo bed is provided with a second plug hole corresponding to the first plug hole; When the rear door is opened to the side, it is locked onto the truck bed by the insert rod.
[0013] Another object of this utility model is to provide a dump truck with a rear door bidirectional opening device, including the cargo box with a rear door bidirectional opening device as described above.
[0014] The advantages of this utility model regarding a truck bed with a bidirectional rear door opening device are as follows: Compared with the prior art, the rear of the truck bed has a side opening, and a rear door is provided at the side opening to seal it. A connecting component is provided at the side opening of the truck bed, and the connecting component is located at the top of the truck bed. The connecting component has a connecting mounting part, the axis of which is arranged vertically. A first connecting structure is provided on the connecting mounting part, and one end of the rear door is rotatably connected to the first connecting structure. Along the width direction of the truck bed, a second connecting structure is spaced apart from the first connecting structure, and the second connecting structure is provided on the truck bed, allowing the other end of the rear door to be detachably rotatably connected. Therefore, when the rear door is connected to both the first and second connecting structures, it can be rotated upwards to open. During the unloading process, the truck bed is lifted, and the rear door opens at a certain angle under gravity for unloading. When the rear door is only connected to the first connecting structure, it can be rotated to the side to open. At this time, goods can be loaded onto the truck bed through the side opening. The door can remain open without external force, which saves time and effort and is easy to operate. Attached Figure Description
[0015] Figure 1 A schematic diagram of the structure of a carriage with a two-way rear door opening device provided for an embodiment of this utility model. Figure 1 ; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 A schematic diagram of the structure of a carriage with a two-way rear door opening device provided for an embodiment of this utility model. Figure 2 ; Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 A schematic diagram of the structure of a carriage with a two-way rear door opening device provided for an embodiment of this utility model. Figure 3 ; Figure 6 for Figure 5 Enlarged view of point C in the middle; Figure 7 for Figure 5 Enlarged diagram of point D in the middle.
[0016] Explanation of reference numerals in the attached figures: 10. Truck bed; 20. Rear door; 21. Locking post; 30. Adapter; 31. Upper fixed seat; 32. Rotating shaft; 33. Connecting rod; 34. Limiting plate; 35. Fixing pin; 40. First connecting structure; 41. Fixed shaft; 50. Second connecting structure; 51. Locking seat; 52. Limiting post. Detailed Implementation
[0017] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0018] It should be noted that the terms "length", "width", "height", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", and "tail" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0019] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Additionally, "multiple" and "several" mean two or more, unless otherwise explicitly specified.
[0021] Please refer to the following: Figures 1 to 7This invention provides a truck body and dump truck with a bidirectional rear door opening device. The truck body includes a truck bed 10, a rear door 20, a connector 30, a first connecting structure 40, and a second connecting structure 50. The truck bed 10 has an open-ended receiving cavity and a side opening at its rear. The rear door 20 is located at the side opening. The connector 30 is disposed on the top of the truck bed 10 and located at the side opening. The connector 30 has a connecting mounting portion with its axis vertically aligned. The first connecting structure 40 is disposed on the connecting mounting portion for rotatably connecting one end of the rear door 20. The second connecting structure 50 is spaced apart from the first connecting structure 40 along the width direction of the truck bed 10 and is disposed on the truck bed 10 for detachably rotatably connecting the other end of the rear door 20. The rotation axes of the rear door 20 and the first connecting structure 40 and / or the second connecting structure 50 are horizontally aligned and perpendicular to the rotation axis of the connecting mounting portion.
[0022] In this embodiment, the truck bed 10 has an open receiving cavity and a side opening at its rear. A rear door 20 is provided at the side opening of the truck bed 10, specifically, the rear door 20 is used to block the side opening. A connector 30 is provided at the top of the truck bed 10, and the connector 30 is located at the side opening. The connector 30 has a connector mounting part, the axis of which is arranged vertically. A first connecting structure 40 is provided on the connector mounting part, allowing one end of the rear door 20 to be rotatably connected. A second connecting structure 50 is provided on the truck bed 10, and is spaced apart from the first connecting structure 40 along the width direction of the truck bed 10. The other end of the rear door 20 is detachably connected to the second connecting structure 50. The rotation axis of the rear door 20 and the first connecting structure 40 is horizontally arranged and perpendicular to the rotation axis of the connector mounting part. Alternatively, the rotation axes of the rear door 20, the first connecting structure 40, and the second connecting structure 50 are horizontally arranged and perpendicular to the rotation axis of the connector mounting part.
[0023] Specifically, the rear door 20 of this application can be opened by rotating upwards or rotating to the side. When the rear door 20 is connected to both the first connecting structure 40 and the second connecting structure 50, it can be opened by rotating upwards. When unloading goods from the truck bed 10, the truck bed 10 will be lifted, and the rear door 20 will open at a certain angle under the action of gravity for unloading. When the rear door 20 is only connected to the first connecting structure 40, the rear door 20 can be opened by rotating to the side, at which time goods can be loaded onto the truck bed 10 through the side opening, which is convenient to operate.
[0024] This utility model provides a vehicle compartment with a two-way rear door opening device. Compared with the prior art, the rear of the cargo compartment 10 has a side opening, and a rear door 20 is provided at the side opening to seal it. A connector 30 is provided at the side opening of the cargo compartment 10, and the connector 30 is located at the top of the cargo compartment 10. The connector 30 has a connector mounting part, the axis of which is arranged vertically. A first connecting structure 40 is provided on the connector mounting part, and one end of the rear door 20 is rotatably connected to the first connecting structure 40. Along the width direction of the cargo compartment 10, a second connecting structure 50 is spaced apart from the first connecting structure 40, and the second connecting structure 50 is provided on the cargo compartment 10. The other end of the rear door 20 is detachably rotatably connected to the second connecting structure 50. Therefore, when the rear door 20 is connected to both the first connecting structure 40 and the second connecting structure 50, the rear door 20 can be rotated upwards to open it. During the unloading process, the truck bed 10 will be lifted, and the rear door 20 will open at a certain angle under the action of gravity to unload the goods. When the rear door 20 is only connected to the first connecting structure 40, the rear door 20 can be opened by rotating it to the side. At this time, goods can be loaded onto the truck bed 10 through the side opening. This process does not require external force to keep the door open, which saves time and effort and is convenient to operate.
[0025] Specifically, when the dump truck is loaded with goods, or while the dump truck is in motion, the rear door 20 remains locked.
[0026] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 6 The adapter 30 includes an upper fixed seat 31, a rotating shaft 32, and a connecting rod 33. The upper fixed seat 31 is fixedly connected to the truck bed 10 and has a mounting hole. The rotating shaft 32 is rotatably disposed in the mounting hole, and the axis of rotation of the rotating shaft 32 is arranged in the vertical direction. The rotating shaft 32 is the adapter mounting part. The connecting rod 33 is fixedly connected to the rotating shaft 32. In this embodiment, the upper fixed seat 31 is fixedly connected to the truck bed 10 and has a mounting hole. The rotating shaft 32 is rotatably disposed in the mounting hole, and the axis of rotation of the rotating shaft 32 is arranged in the vertical direction. The rotating shaft 32 is the adapter mounting part, so that the first connecting structure 40 is connected to the rotating shaft 32, and the rotating shaft 32 can drive the first connecting structure 40 to rotate. When the rear door 20 is only connected to the first connecting structure 40, the rotating shaft 32 drives the first connecting structure 40 and the rear door 20 to rotate so that the rear door 20 can be opened or closed laterally.
[0027] In some embodiments, please refer to Figure 5 and Figure 7The adapter 30 also includes a limiting plate 34 and a fixing shaft 41. Two limiting plates 34 are provided, fixedly mounted on the truck bed 10, and spaced apart vertically. A fixing pin 35 is detachably connected to the two limiting plates 34, used to connect the rear door 20 to the limiting plates 34. The rear door 20 has a block installed between the two limiting plates 34, with a pin hole for the fixing pin 35 to pass through, allowing the rear door 20 to be rotatably connected to the fixing pin 35. In this embodiment, two limiting plates 34 are fixedly mounted on the truck bed 10, spaced apart vertically. The fixing pin 35 is detachably connected to the two limiting plates 34, and the rear door 20 has a block installed between the two limiting plates 34, with a pin hole for the fixing pin 35 to pass through, thus allowing the fixing pin 35 to be detachably connected to the block. The fixing pin 35 is used to connect the rear door 20 and the limiting plates 34. When the rear door 20 is only connected to the first connecting structure 40, the insert of the rear door 20 is installed between the two limiting plates 34, and the rear door 20 is connected to the limiting plates 34 by the fixing pin 35. The rear door 20 is rotatably connected to the fixing pin 35, so that the rear door 20 can be rotated laterally to open or close laterally. When the rear door 20 is connected to both the first connecting structure 40 and the second connecting structure 50, there is no connection between the rear door 20 and the limiting plate 34.
[0028] In some embodiments, please refer to Figure 2 and Figure 6 The first connecting structure 40 includes a fixed shaft 41, which is connected to a connecting rod 33. The fixed shaft 41 is used for the rotatable connection of the rear door 20, and its central axis is arranged along the width direction of the truck bed 10. The rear door 20 has a insertion hole adapted to the fixed shaft 41. In this embodiment, the fixed shaft 41 is connected to the connecting rod 33, and the rear door 20 has a insertion hole adapted to the fixed shaft 41, so that the fixed shaft 41 is installed in the insertion hole. During the upward opening of the rear door 20, the rotation axis of the rear door 20 coincides with the central axis of the fixed shaft 41.
[0029] In some embodiments, please refer to Figure 4 The second connecting structure 50 includes a mounting base 51 and a limiting post 52. The mounting base 51 is fixedly mounted on the truck bed 10 and has a slot. The limiting post 52 is detachably connected to the mounting base 51, and the limiting post 52 and the mounting base 51 enclose a downwardly mounted slot. The mounting base 51 has a limiting hole for the installation of the limiting post 52. In this embodiment, the mounting base 51 is fixedly mounted on the truck bed 10, and the mounting base 51 has a slot. The limiting post 52 and the mounting base 51 enclose a downwardly mounted slot, and the limiting post 52 and the mounting base 51 are detachably connected. Thus, during the upward opening of the rear door 20, the rear door 20 is rotatably connected to the mounting base 51, and the limiting post 52 limits the movement of the rear door 20. Specifically, the bottom surface of the mounting slot is an inclined surface.
[0030] In some embodiments, please refer to Figure 3 and Figure 4 The rear door 20 is provided with a locking post 21, which is rotatably mounted in a mounting slot. The rotation axis of the locking post 21 is set along the width direction of the truck bed 10. In this embodiment, the locking post 21 on the rear door 20 is rotatably mounted in the mounting slot, and the limiting post 52 is used to limit the locking post 21.
[0031] In some embodiments, the rear door 20 is provided with a handle, which makes it easy for the operator to hold and operate the rear door 20 during opening or closing.
[0032] In some embodiments, the carriage with a two-way rear door opening device provided in this utility model embodiment further includes a plug rod. The rear door 20 has a first plug hole adapted to the plug rod, and the cargo bed 10 has a second plug hole corresponding to the first plug hole. When the rear door 20 is opened to the side, the plug rod locks the rear door 20 onto the cargo bed 10. In this embodiment, the rear door 20 has a first plug hole, and the cargo bed 10 has a second plug hole. The second plug hole corresponds to the first plug hole, and the plug rod is adapted to both the first and second plug holes. Therefore, when the rear door 20 is opened to the side, the plug rod is inserted into the first and second plug holes, locking the rear door 20 onto the cargo bed 10 and keeping the rear door 20 in the open state.
[0033] Based on the same inventive concept, this application also provides a dump truck with a rear door bidirectional opening device, including the cargo box with a rear door bidirectional opening device as described in the above embodiments. Because the dump truck with a rear door bidirectional opening device provided in this utility model embodiment includes the cargo box with a rear door bidirectional opening device as described in the above embodiments, it possesses all the beneficial effects of the aforementioned cargo box with a rear door bidirectional opening device.
[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A carriage with a rear door bidirectional opening device, characterized in that, include: The truck bed has an open-ended receiving cavity, and the rear of the truck bed has a side opening; The rear door is located at the side opening; An adapter is provided on the top of the truck bed and located at the side opening. The adapter has an adapter mounting portion with its axis arranged in a vertical direction. A first connecting structure is provided on the adapter mounting part for rotatably connecting one end of the rear door; The second connecting structure is spaced apart from the first connecting structure along the width direction of the truck bed and is disposed on the truck bed, allowing the other end of the rear door to be detachably and rotatably connected. The rear door is horizontally positioned relative to the rotation axis of the first connecting structure and / or the second connecting structure, and perpendicular to the rotation axis of the adapter mounting portion.
2. A carriage with a rear door bidirectional opening device as described in claim 1, characterized in that, The adapter includes: An upper fixing seat is fixedly connected to the truck bed, and the upper fixing seat has mounting holes; A rotating shaft is rotatably disposed in the mounting hole, and the axis of rotation of the rotating shaft is arranged in the vertical direction; the rotating shaft is the adapter mounting part. The connecting rod is fixedly connected to the rotating shaft.
3. A carriage with a two-way rear door opening device as described in claim 2, characterized in that, The adapter also includes: Two limiting plates are provided, and the two limiting plates are fixedly installed on the truck bed. The two limiting plates are spaced apart in the vertical direction. A fixing pin is detachably connected to the two limiting plates and is used to connect the rear door to the limiting plates. The rear door is provided with an insert block installed between the two limiting plates. The insert block has a pin hole for the fixing pin to pass through, and the rear door is rotatably connected to the fixing pin.
4. A carriage with a rear door bidirectional opening device as described in claim 2, characterized in that, The first connecting structure includes a fixed shaft connected to the connecting rod, the fixed shaft being used for rotatable connection of the rear door, and the central axis of the fixed shaft being arranged along the width direction of the truck bed; The rear door is provided with a plug hole that is adapted to the fixed shaft.
5. A carriage with a two-way rear door opening device as described in claim 2, characterized in that, The second connection structure includes: A card holder is fixedly mounted on the truck bed, and the card holder is provided with a slot. A limiting post is detachably connected to the card seat, and the limiting post and the card seat together form an installation slot; The card holder is provided with a limiting hole for mounting the limiting post.
6. A carriage with a two-way rear door opening device as described in claim 5, characterized in that, The rear door is provided with a locking post, which is rotatably mounted in the mounting slot; the rotation axis of the locking post is set along the width direction of the truck bed.
7. A carriage with a rear door bidirectional opening device as described in claim 1, characterized in that, The rear door is equipped with a handle.
8. A carriage with a rear door bidirectional opening device as described in claim 1, characterized in that, The carriage with a rear door bidirectional opening device also includes a plug bar; the rear door is provided with a first plug hole adapted to the plug bar, and the cargo bed is provided with a second plug hole corresponding to the first plug hole; When the rear door is opened to the side, it is locked onto the truck bed by the insert rod.
9. A dump truck with a rear door bidirectional opening device, characterized in that, The carriage includes a rear door bidirectional opening device as described in any one of claims 1-8.