A carrier vehicle
By introducing a hand-cranked transmission device and an electric motor-driven lifting module into the transport vehicle, combined with a tiltable barrier bar and an optimized cargo door sill structure, the problems of sealing, safety, and cumbersome operation during loading and unloading of the transport vehicle are solved. This achieves automatic tilting of the tailgate and a flat trolley path, improving transportation efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HENGYANG TELLHOW COMM MOTOR CO LTD
- Filing Date
- 2023-12-04
- Publication Date
- 2026-06-05
AI Technical Summary
Existing transport vehicles have problems such as insufficient cargo compartment sealing performance, poor safety performance, lack of easy-to-store enclosure structure, inability of the tailgate to automatically tilt, unclear marking of the tailgate and cargo compartment position, easy generation of gaps and grooves during loading and unloading, risk of goods rolling off when pushing the vehicle in and out, and cumbersome operation.
A transport vehicle comprising a body, cargo compartment, drive module, and lifting module was designed. The tailgate is lifted using a hand-cranked transmission device and an electric motor. It features a flip-up barrier and transition frame, optimized cargo compartment threshold structure, automatic tailgate flipping and position calibration, a flat trolley path, and a pass-through hole when the tailgate is closed for tool transfer.
It improves the sealing and security of the cargo hold, realizes the automatic flipping and position marking of the tail panel, reduces gaps during loading and unloading, ensures the smooth passage of the trolley, reduces the complexity of operation, and enhances the safety and efficiency of loading and unloading.
Smart Images
Figure CN117416271B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of work vehicles, and more specifically to a transport vehicle. Background Technology
[0002] During vehicle operations and transportation, ordinary goods are commonly transported, but special-purpose vehicles also transport more important materials and documents, requiring loading and unloading during transport. A vehicle tailgate is a loading and unloading device installed at the rear or side of a vehicle. It provides stable, safe, fast, and efficient loading and unloading services, and can be used in conjunction with forklifts, handcarts, and other equipment to further save manpower.
[0003] However, in actual engineering practice, the following problems still exist:
[0004] First, the existing work vehicles have insufficient sealing and safety performance in transporting important materials and documents.
[0005] Second, existing vehicles do not have a convenient storage enclosure structure on the tailgate when loading and unloading goods.
[0006] Third, the tailgate of existing vehicles cannot automatically tilt during loading and unloading.
[0007] Fourth, when loading and unloading goods on existing vehicles, the relative position between the tailgate and the cargo compartment is either simplistic or lacks a clear and effective calibration method.
[0008] Fifth, when loading and unloading goods on existing vehicles, the gaps and grooves between the tailgate and the cargo compartment are not conducive to the flat transport of goods or trolleys, and the goods are easily tripped by the grooves.
[0009] VI. When loading and unloading goods using existing vehicles, if trolleys are used to enter and exit the warehouse, a flat path is required. However, in some cases, there is a risk of goods rolling out of the warehouse or falling out of the warehouse.
[0010] 7. When existing work vehicles are transporting important materials and documents, personnel may be selected to accompany the vehicle to guard the goods in some cases. If there are many additional parts in the cargo compartment, opening the cargo door is cumbersome. When there is no need to load or unload goods and only the transfer of small tools is required, it is obviously cumbersome to open all the parts such as the tailgate and cargo door. Summary of the Invention
[0011] To overcome the above problems, the present invention proposes a solution that addresses multiple problems simultaneously.
[0012] The technical solution adopted by this invention to solve its technical problem is as follows: a transport vehicle, including a vehicle body, wheels, a cargo compartment, a drive module, and a lifting module; the cargo compartment is provided on the vehicle body, and wheels are provided below the vehicle body; the drive module includes a hand crank, a hand crank transmission device, a reducer, a motor, a drive shaft, sprockets, chains, and a mounting base; the mounting base is equipped with the housing of the hand crank transmission device and the housing of the reducer; the lifting module includes a lifting frame, a lifting beam, a horizontal plate, a tail plate, a vertical plate, a retaining bar, a hinged seat, a roller frame, rollers, a transition frame, and a stop block; the output end of the hand crank is connected to the hand crank transmission device, the output end of the motor is connected to the reducer, the hand crank transmission device or the reducer outputs power to the input end of the drive shaft, the drive shaft is provided with two sprockets, each sprocket is provided with a chain, the chain is provided with a connecting block, the connecting block is connected to the lifting beam, thereby driving the lifting beam to rise and fall;
[0013] The rear of the warehouse includes an outer wall and an inner wall. A first door is provided on the outer wall, and a second door is provided on the inner wall. An outer threshold is provided below the first door, and an inner threshold is provided below the second door. The lifting frame is provided on the outer wall. The lifting beam can move up and down in the lifting frame. A vertical plate is installed on the lifting beam. The lower end of the vertical plate is pivotally connected to a horizontal plate. The horizontal plate is fixedly connected to the tail plate. The tail plate includes a horizontal surface and an inclined surface.
[0014] The tail plate is provided with a hinge seat, one end of the barrier rod is hinged to the hinge seat, and the other end of the barrier rod is provided with a roller frame, in which a roller is provided; in the first state, the roller of the barrier rod is located above the tail plate, and in the second state, the roller of the barrier rod is located behind the tail plate; the inner side of the lifting frame is provided with the stop block, and the stop block is connected to the lifting frame through a detachable connector, and the stop block can be installed at different positions on the lifting frame through the detachable connector; the lower end of the stop block is provided with an arc surface, and the arc surface extends upward to connect with a vertical surface of the stop block; in the second state, the barrier rod lifts the lifting beam, and the roller moves to contact the arc surface and moves upward along the arc surface, thereby realizing the flipping of the tail plate, after which the roller fits against the vertical surface;
[0015] The transition frame is provided below the outer wall. The transition frame includes a transition surface located between the tail plate and the outer sill. A transfer hole is formed in the middle of the transition surface. The outer sill and the inner sill can be rotated and collapsed. The outer sill can be rotated and collapsed to cover the transfer hole.
[0016] Preferably, when the horizontal plate pivots around the vertical plate to a predetermined position, the pivotal connection between the two can be fixed, thereby achieving positional fixation between the vertical plate and the horizontal plate.
[0017] Preferably, the first door and the second door are the same size.
[0018] Preferably, the outer wall dimension is larger than the inner wall dimension.
[0019] Preferably, the outer threshold and the inner threshold have the same height.
[0020] Preferably, a protrusion is provided at the end of the horizontal plate that connects to the vertical plate.
[0021] Preferably, the lower end of the vertical plate is provided with a connector to connect to the horizontal plate.
[0022] Preferably, the lifting frame and the lifting beam are fitted in two sets.
[0023] Preferably, each lifting beam has two vertical plates at its lower part.
[0024] Preferably, a horizontal plate is sandwiched between two vertical plates.
[0025] The beneficial effects of this invention are:
[0026] First, in response to the first point raised in the background technology, an integrated warehouse was designed. The rear door of the warehouse is smaller than that of a common truck, and a second door panel was designed to improve confidentiality and protection.
[0027] Second, in response to the second point raised in the background technology, a pivotable and retractable rod structure is provided on both sides of the tail plate as a barrier rod.
[0028] Thirdly, regarding the third point raised in the background technology, the lifting beam can move up and down in the lifting frame, and the lifting beam can drive the tail plate to rise and fall. The tail plate and the lifting beam are connected in an L-shape pivot. Rollers are set at the ends of the aforementioned guardrails, and a stop block is set on the inner side of the lifting frame. The stop block has an arc surface. When the tail plate is lifted and the roller contacts the arc surface, the reaction force generated by the lifting force produces a torque to rotate the tail plate. As the lifting beam is lifted, the roller will also move along the arc surface, eventually moving to the vertical surface of the stop block. The tail plate becomes vertical, completes the flipping, and finally completes the lifting and falling.
[0029] Fourthly, regarding the fourth point raised in the background technology, the preferred method is to make the position of the stop block adjustable. The stop block is connected to the lifting frame through a detachable connector. The different positions of the stop block on the lifting frame clearly and intuitively mark the different positions of the tail plate. For example, when the trolley is transporting, the tail plate is flush with the bottom wall of the warehouse in the first position, which makes it easy to push the trolley into the warehouse. Or, for example, when the trolley is transporting, the tail plate is lower than the bottom wall of the warehouse in the second position, which makes it easy for people on the tail plate to lift the goods. The bottom wall of the warehouse is exactly corresponding to the lower body position of the people, and the people can directly place the goods that have been moved to below the waist into the warehouse without having to bend over to put the goods down a second time.
[0030] Fifth, in response to the fifth point raised in the background technology, a transition frame is set between the cargo compartment and the tail panel. The transition frame has a transition surface corresponding to the position of the trolley rollers to facilitate the trolley to pass smoothly.
[0031] VI. Regarding the sixth point raised in the background technology, a threshold is installed below the inner and outer doors to prevent goods from accidentally falling out. At the same time, the threshold can rotate and tilt to facilitate the passage of carts, thereby improving adaptability.
[0032] VII. In response to point 7 in the background art, a transfer hole is provided between the transition surfaces of the transition frame, so that the tool can still be transferred through the transfer hole even when the tail plate is closed;
[0033] In addition, if the transfer hole does indeed affect the movement of the cart and cause a ditch, the threshold under the outer door can be tilted outward to cover the transfer hole and form a flat path. Attached Figure Description
[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0035] Figure 1 This is an overall diagram of the tilting lifting tailgate system of the present invention.
[0036] Figure 2 This is a three-dimensional diagram of the unfolded lifting tailplate of the present invention.
[0037] Figure 3 This is a 3D diagram of the retracted tailgate of the present invention.
[0038] Figure 4 A three-dimensional view of the pivot position of the lifting tailgate of the present invention.
[0039] Figure 5 This is a three-dimensional diagram of the lifting tailplate pivot structure of the present invention.
[0040] Figure 6 This is a three-dimensional diagram of the enclosure bar in its retracted state according to the present invention.
[0041] Figure 7 This is a three-dimensional diagram of the enclosure state of the enclosure poles according to the present invention.
[0042] Figure 8 Detailed diagram of the transition frame and stop block of the present invention.
[0043] Figure 9 The tailplate flipping process of this invention Figure 1
[0044] Figure 10 The tailplate flipping process of this invention Figure 2
[0045] Figure 11 Detailed diagram of the tail plate flipping and transfer hole of the present invention.
[0046] Figure 12 This is a rear view of the vehicle used in this invention.
[0047] The reference numerals in the figure are as follows:
[0048] 1. Warehouse, 2. Outer wall, 3. Inner wall, 4. Lifting frame, 5. Lifting beam, 6. Horizontal plate, 7. Tail plate, 8. Vertical plate, 9. Enclosure bar, 10. Hinge seat, 11. Protrusion, 12. Roller frame, 13. Roller, 14. Inner sill, 15. Outer sill, 16. Transition frame, 17. Transition surface, 18. Stop block, 19. Mounting hole, 20. Transmission hole, 21. Hand crank, 22. Hand crank transmission device, 23. Reducer, 24. Electric motor, 25. Drive shaft, 26. Sprocket, 27. Mounting seat. Detailed Implementation
[0049] As shown in the figure: a transport vehicle includes a vehicle body, wheels, a cargo compartment, a drive module, and a lifting module; the cargo compartment is provided on the vehicle body, and wheels are provided below the vehicle body; the drive module includes a hand crank, a hand crank transmission device, a reducer, a motor, a drive shaft, sprockets, chains, and a mounting base; the mounting base is equipped with the housing of the hand crank transmission device and the housing of the reducer; the lifting module includes a lifting frame, a lifting beam, a horizontal plate, a tail plate, a vertical plate, a retaining bar, a hinged seat, a roller frame, rollers, a transition frame, and a stop block; the output end of the hand crank is connected to the hand crank transmission device, and the output end of the motor is connected to the reducer; the hand crank transmission device or the reducer outputs power to the input end of the drive shaft; the drive shaft is provided with two sprockets, each sprocket is provided with a chain, and the chain is provided with a connecting block; the connecting block is connected to the lifting beam, thereby driving the lifting beam to lift and lower;
[0050] The rear of the warehouse includes an outer wall and an inner wall. A first door is provided on the outer wall, and a second door is provided on the inner wall. An outer threshold is provided below the first door, and an inner threshold is provided below the second door. The lifting frame is provided on the outer wall. The lifting beam can move up and down in the lifting frame. A vertical plate is installed on the lifting beam. The lower end of the vertical plate is pivotally connected to a horizontal plate. The horizontal plate is fixedly connected to the tail plate. The tail plate includes a horizontal surface and an inclined surface.
[0051] The tail plate is provided with a hinge seat, one end of the barrier rod is hinged to the hinge seat, and the other end of the barrier rod is provided with a roller frame, in which a roller is provided; in the first state, the roller of the barrier rod is located above the tail plate, and in the second state, the roller of the barrier rod is located behind the tail plate; the inner side of the lifting frame is provided with the stop block, and the stop block is connected to the lifting frame through a detachable connector, and the stop block can be installed at different positions on the lifting frame through the detachable connector; the lower end of the stop block is provided with an arc surface, and the arc surface extends upward to connect with a vertical surface of the stop block; in the second state, the barrier rod lifts the lifting beam, and the roller moves to contact the arc surface and moves upward along the arc surface, thereby realizing the flipping of the tail plate, after which the roller fits against the vertical surface;
[0052] The transition frame is provided below the outer wall. The transition frame includes a transition surface located between the tail plate and the outer sill. A transfer hole is formed in the middle of the transition surface. The outer sill and the inner sill can be rotated and collapsed. The outer sill can be rotated and collapsed to cover the transfer hole.
[0053] As shown in the figure: When the horizontal plate pivots around the vertical plate to a predetermined position, the pivotal connection between the two can be fixed, thereby fixing the position between the vertical plate and the horizontal plate. The first door and the second door have the same dimensions. The outer wall dimension is larger than the inner wall dimension. The outer threshold and the inner threshold have the same height. A protrusion is provided at the upper end of the horizontal plate that connects to the vertical plate. A connector is provided at the lower end of the vertical plate to connect to the horizontal plate. There are two sets of cooperation between the lifting frame and the lifting beam. Two vertical plates are provided at the lower part of each lifting beam. A horizontal plate is sandwiched between the two vertical plates. The hand-cranked transmission device and the reducer are common transmission structures. A simple solution includes a gear set with bevel gear transmission, and the input end of the transmission shaft includes a bevel gear, thereby changing the direction of rotation; a more preferred solution is to drive the transmission shaft to rotate through a worm gear transmission device, which can utilize its self-locking characteristics.
[0054] The different opening sizes of the first and second doors in the attached diagram are to more clearly show the positional relationship between the inner and outer walls. In actual design, it is advisable for the two doors to have the same opening size, so that those skilled in the art can use conventional technical knowledge to make the inner and outer doors open outwards or inwards simultaneously without interfering with each other. Since common solutions are not shown, the tailgate can be opened or closed using hydraulic, electric, or manual power.
[0055] The above detailed description is a specific description of feasible embodiments of the present invention. These embodiments are not intended to limit the patent scope of the present invention. All equivalent implementations or modifications that do not depart from the present invention should be included in the patent scope of this case.
Claims
1. A transport vehicle, characterized in that: The system includes a vehicle body, wheels, a cargo compartment, a drive module, and a lifting module. The cargo compartment is mounted on the vehicle body, and wheels are located beneath the vehicle body. The drive module includes a hand crank, a hand-cranked transmission device, a reducer, a motor, a drive shaft, sprockets, chains, and a mounting base. The mounting base houses the housings of the hand-cranked transmission device and the reducer. The lifting module includes a lifting frame, a lifting beam, a horizontal plate, a tail plate, a vertical plate, a retaining bar, a hinged seat, a roller frame, rollers, a transition frame, and stops. The output end of the hand crank is connected to the hand-cranked transmission device, and the output end of the motor is connected to the reducer. The hand-cranked transmission device or the reducer outputs power to the input end of the drive shaft. The drive shaft has two sprockets, each with a chain. A connecting block is attached to the chain, and the connecting block connects to the lifting beam, thereby driving the lifting beam to rise and fall. The rear of the warehouse includes an outer wall and an inner wall. A first door is provided on the outer wall, and a second door is provided on the inner wall. An outer threshold is provided below the first door, and an inner threshold is provided below the second door. The lifting frame is provided on the outer wall. The lifting beam moves up and down in the lifting frame. A vertical plate is installed on the lifting beam. The lower end of the vertical plate is pivotally connected to a horizontal plate. The horizontal plate is fixedly connected to the tail plate. The tail plate includes a horizontal surface and an inclined surface. The tail plate is provided with a hinge seat, one end of the barrier rod is hinged to the hinge seat, and the other end of the barrier rod is provided with a roller frame, in which a roller is provided; in the first state, the roller of the barrier rod is located above the tail plate, and in the second state, the roller of the barrier rod is located behind the tail plate; the inner side of the lifting frame is provided with the stop block, which is connected to the lifting frame through a detachable connector, and the stop block is installed at different positions on the lifting frame through the detachable connector; the lower end of the stop block is provided with an arc surface, which extends upward to connect to a vertical surface of the stop block; in the second state, the barrier rod lifts the lifting beam, and the roller moves to contact the arc surface and moves upward along the arc surface. The reaction force generated by the lifting force produces a torque that rotates the tail plate. As the lifting beam is lifted, the roller also moves along the arc surface, thereby realizing the flipping of the tail plate. After flipping, the roller is in contact with the vertical surface; The transition frame is provided below the outer wall. The transition frame includes a transition surface located between the tail plate and the outer sill. A transfer hole is formed in the middle of the transition surface. The outer sill and the inner sill can rotate and fall down. The outer sill rotates and falls down to cover the transfer hole.
2. A transport vehicle according to claim 1, characterized in that: When the horizontal plate pivots around the vertical plate to a predetermined position, the pivotal connection between the two can be fixed, thereby achieving positional fixation between the vertical plate and the horizontal plate.
3. A transport vehicle according to claim 1, characterized in that: The first door and the second door are the same size.
4. A transport vehicle according to claim 1, characterized in that: The outer wall dimension is larger than the inner wall dimension.
5. A transport vehicle according to claim 1, characterized in that: The outer threshold and the inner threshold have the same height.
6. A transport vehicle according to claim 1, characterized in that: A protrusion is provided on the upper end of the horizontal plate that connects to the vertical plate.
7. A transport vehicle according to claim 1, characterized in that: The lower end of the vertical plate is provided with a connector to connect to the horizontal plate.
8. A transport vehicle according to claim 1, characterized in that: There are two sets of connections between the lifting frame and the lifting beam.
9. A transport vehicle according to claim 8, characterized in that: Each lifting beam has two vertical plates at its bottom.
10. A transport vehicle according to claim 9, characterized in that: A horizontal board is sandwiched between two vertical boards.