Loading device for cargo vehicle-mounted transportation
By designing a loading device including a base, cargo bracket, slide rail assembly and lifting adjustment structure in the trunk of the vehicle, the complex and cost problems of existing vehicle-mounted wheelchair loading equipment are solved, and a simple, safe and economical wheelchair and cargo loading effect is achieved.
Patent Information
- Application Number
- CN202411822582.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-03-07
AI Technical Summary
The existing vehicle-mounted wheelchair loading equipment has problems such as power drive failure, complex structure, high cost and low usage frequency, making it difficult to load wheelchairs and other cargo safely and conveniently.
A loading device for cargo cart transportation is designed, including installing a base, cargo bracket, slide rail assembly, lifting adjustment structure and traction parts in the trunk of the cargo bracket. Through manpower operation of the slide rail assembly and lifting adjustment structure, the cargo bracket can be moved horizontally and lifted, making it easier to load and unload wheelchairs and other cargoes.
It realizes a loading device with a simple structure, manpower operation, safe and reliable, and no power supply, and takes up a small space and can easily load wheelchairs, cars and other goods, greatly facilitating the safe loading of manned wheelchairs.
Smart Images
Figure CN119564409A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of vehicle transportation, and in particular to a loading device for transporting goods on a vehicle. Background Art
[0002] Many elderly people, patients, and people with lower limb disabilities who have difficulty walking rely on wheelchairs. When they need to travel to distant places, visit relatives, or go to work, they have to sit in wheelchairs. Wheelchairs cannot be pushed over long distances and need to be transported by vehicle. Currently, vehicles on the market that facilitate disabled people to travel by vehicle are generally equipped with vehicle lifts. First, a wheelchair or a similar object is pushed to the surface of a lifting platform, and then the wheelchair is operated to enter the vehicle under the action of the vehicle lift, and the operator enters the vehicle to fix the wheelchair. This device is generally installed on a special vehicle.
[0003] There are other types of vehicle-mounted wheelchair loading equipment that can meet the needs of wheelchairs entering vehicles, but they are powered by electricity or use ramp lifting. If the electric drive encounters an electrical failure, there is a risk that the equipment will get stuck and the door will not be closed, which will make it difficult for the owner to close the door and leave the vehicle. Pushing up and down the ramp will make the wheelchair occupant feel uncomfortable and the vehicle may slip. In addition, the electric-driven loading device is difficult to carry other goods without a wheelchair. The equipment has a complex structure, many failure points, and requires power supply, which is costly, infrequently used, and has poor economic efficiency. Summary of the invention
[0004] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a loading device for transporting goods on a vehicle to greatly facilitate the safe loading of a wheelchair for a passenger.
[0005] A loading device for transporting goods on a vehicle, comprising a base installed in a trunk of the vehicle; the transport device also comprises: a cargo tray, which is placed in the base; Two sets of slide rail assemblies for driving the cargo bracket to move horizontally, which are fixedly mounted on the base; A lifting and lowering adjustment structure installed on two sets of slide rail assemblies, comprising a worm gear reduction box, a bearing seat bracket, a main shaft installed between the worm gear reduction box and the bearing seat bracket, two double-groove rope wheels fixedly sleeved on the main shaft, a front shaft arranged in parallel at a position corresponding to one side of the main shaft, and two rope wheels fixedly sleeved on the front shaft; and A traction member used to connect the cargo bracket and the lifting and adjusting structure.
[0006] As a further improvement of the above solution, the base is detachably mounted on the bottom plate of the car trunk by bolts, and the base is a frame structure; the longitudinal section of the base is concave, and both sides of the base are provided with notches for adapting to the raised parts of the wheels in the car trunk.
[0007] As a further improvement of the above solution, an extension plate is welded at a position corresponding to one side of the cargo bracket, and the extension plate is arranged tilted downward on the side facing away from the cargo bracket, and the lowest position of the extension plate is flush with the bottom surface of the cargo bracket.
[0008] Furthermore, when the cargo bracket is located in the base, the cargo bracket and the base are reinforced by four clamps, and the four clamps are evenly clamped at positions around the four sides.
[0009] As a further improvement of the above scheme, the slide rail assembly is arranged horizontally, and the two groups of slide rail assemblies are symmetrically distributed along the central axis of the base; each group of slide rail assemblies is composed of a fixed rail, an upper slide and a middle slide block, and a dividing pin is detachably installed between the fixed rail, the upper slide and the middle slide block.
[0010] As a further improvement of the above scheme, the fixed rail, the upper slide and the middle slide form an I-shaped structure, and the middle slide is slidably arranged between the fixed rail and the upper slide; the fixed rail and the cargo bracket are fixedly connected, the upper slide is located above the fixed rail, and a handle is fixedly installed on the top of the upper slide.
[0011] As a further improvement of the above scheme, the middle sliding block has an aluminum profile frame, an upper sliding block and a lower sliding block, and the fixed rail and the upper slide are both provided with sliding grooves embedded with polymer materials, and the upper sliding block moves linearly along the sliding groove in the upper slide, and the lower sliding block moves linearly along the sliding groove in the fixed rail.
[0012] As a further improvement of the above scheme, the worm gear reduction box is fixedly installed at a position on one side of the top of one of the upper slides, and the bearing seat bracket is fixedly installed at a position on one side of the top of the other upper slide; one end of the main shaft is vertically rotatably connected to the bearing seat bracket, and the other end of the main shaft is fixedly connected to the turbine shaft of the worm gear reduction box; the worm gear reduction box is externally provided with a rotating handle fixed to the worm, and the front shaft is fixedly installed between the other side of the top of the two upper slides through an axle seat.
[0013] Furthermore, the traction member is four steel ropes; two of the steel ropes are installed between the rope pulley on one side and the double-groove rope pulley, and the remaining two steel ropes are installed between the rope pulley on the other side and the double-groove rope pulley.
[0014] As a further improvement of the above scheme, the two steel ropes on the double-groove pulley are arranged in parallel, one end of one of the steel ropes is fixed to the double-groove pulley, and the other end passes around the double-groove pulley and is suspended above the cargo bracket, and one end of the remaining steel rope is fixed to the double-groove pulley, and the other end passes around the pulley and is suspended above the cargo bracket.
[0015] As a further improvement of the above solution, the ends of the four steel ropes facing the cargo bracket are located at the same height, and steel rope lifting eyes are fixedly installed at positions around the cargo bracket.
[0016] Compared with the prior art, the beneficial effects of the present invention are: simple structure, manual operation, safe and reliable, no need for power supply, the space occupied is mainly the frame of the carriage, it has little impact on the vehicle's cargo transportation, and wheelchairs, carts and more types of cargo can be easily loaded, and it greatly facilitates the safe loading of manned wheelchairs. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 Shown is a schematic structural diagram of a loading device for transporting goods on a vehicle provided by the present invention.
[0018] Figure 2 Shown Figure 1 Structural diagram of the middle base.
[0019] Figure 3 Shown is a schematic diagram of the loading device when the cargo bracket is on the ground.
[0020] Figure 4 Shown is a schematic diagram of the slide rail assembly in an initial state.
[0021] Figure 5 Shown Figure 4 Plan view at point A in the middle.
[0022] Figure 6 Shown is a schematic diagram of the slide rail assembly in the extended state.
[0023] Main component symbols 1. Base; 2. Cargo bracket; 3. Fixed rail; 4. Upper slide; 5. Middle slide; 6. Indexing pin; 7. Worm gear reducer; 8. Bearing seat bracket; 9. Main shaft; 10. Double-groove rope pulley; 11. Front shaft; 12. Rope pulley; 13. Wire rope.
[0024] The above description of the main component symbols is combined with the accompanying drawings and specific implementation methods to further illustrate the present invention in detail. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the embodiments. Additional aspects and advantages of the present invention will be given in part in the following description, and will become apparent from the following description, or will be understood through the practice of the present invention. It should be understood that the following description is only used to explain the present invention and is not intended to limit the present invention.
[0026] The specific embodiments of the present invention are described in detail below.
[0027] See also Figure 1 The present embodiment provides a loading device for transporting goods on a vehicle, which includes a base 1 installed in the trunk of the vehicle, a cargo bracket 2 placed in the base 1, two sets of slide rail assemblies for driving the cargo bracket 2 to move horizontally, a lifting and adjusting structure installed on the two sets of slide rail assemblies, and a traction member for connecting the cargo bracket 2 and the lifting and adjusting structure.
[0028] The base 1 is detachably mounted on the bottom plate of the trunk of the vehicle by bolts, and the base 1 is a frame structure, and the longitudinal section of the base 1 is concave. In this embodiment, when no cargo such as wheelchairs and transport carts are needed, the loading device can be removed by removing the bolts, thereby saving space in the trunk of the vehicle for carrying other cargo. Figure 2 In this embodiment, the base 1 has notches on both sides. The purpose of this design is to avoid the protrusions at the wheel position so that the base 1 can be well adapted to the trunk of the car.
[0029] An extension plate is welded at a position corresponding to one side of the cargo bracket 2, and the extension plate is arranged downwardly at a side facing away from the cargo bracket 2, and the lowest position of the extension plate is flush with the bottom surface of the cargo bracket 2. In this embodiment, the extension plate forms a slope on the cargo bracket 2, so as to facilitate the loading and unloading of goods such as wheelchairs and transport carts. When the cargo bracket 2 is located in the base 1, the cargo bracket 2 and the base 1 are reinforced by four clamps, and the four clamps are evenly clamped at the surrounding positions. In this embodiment, the cargo bracket 2 is stably placed on the base 1 by the clamps, so as to avoid the displacement of the cargo bracket 2 caused by the speed change of the vehicle when driving.
[0030] The slide rail assembly is fixedly mounted on the base 1, and the slide rail assembly is arranged horizontally, and the two sets of slide rail assemblies are symmetrically distributed along the central axis of the base 1. Figure 4-6 Each set of slide rail assemblies is composed of a fixed rail 3, an upper slide 4 and a middle slide 5. The fixed rail 3, the upper slide 4 and the middle slide 5 form an I-shaped structure, and the middle slide 5 is slidably disposed between the fixed rail 3 and the upper slide 4. The fixed rail 3 is fixedly connected to the cargo bracket 2, the upper slide 4 is located above the fixed rail 3, and a handle is fixedly installed on the top of the upper slide 4, which provides a fulcrum for pulling out or pushing in the cargo bracket 2.
[0031] The middle slider 5 has an aluminum profile frame, an upper slider and a lower slider. The fixed rail 3 and the upper slide 4 are both provided with a slide groove embedded with a polymer material, and the upper slider moves linearly along the slide groove in the upper slide 4, and the lower slider moves linearly along the slide groove in the fixed rail 3. This embodiment is described by taking the slide groove with an embedded polymer polyethylene layer as an example. Based on the above design, a sliding friction pair is formed between the upper slider and the corresponding polymer polyethylene layer, and between the lower slider and the corresponding polymer polyethylene layer, that is, only when the upper slide 4 or the middle slider 5 is subjected to a certain degree of horizontal force can it slide, limiting the five degrees of freedom of the moving parts, eliminating the possibility of failure due to the rolling pair, so that the horizontal operation of the slide rail assembly is safe and reliable, with good stability, and there will be no rapid movement caused by the loss of control of the rolling pair, reducing the probability of injury to people on the wheelchair or damage to the goods. It should be noted that in actual use, in order to avoid over-sliding, a mechanical travel stop member (not shown) is also provided on the middle slider 5, so as to limit the middle slider 5 when it is pulled out or pushed in to the moving end, so as to avoid the middle slider 5 from completely falling out.
[0032] An indexing pin 6 is detachably installed between the fixed rail 3, the upper slide 4 and the middle slide 5. In this embodiment, when the cargo bracket 2 is pushed out to a suitable position, the indexing pin 6 is screwed in to limit the position. At this time, the slide rail assembly is in a locked state, and the fixed rail 3, the upper slide 4 and the middle slide 5 cannot move relative to each other. The indexing pin 6 ensures the temporary positioning of the slide rail assembly when it is extended into place, avoids accidental extension and retraction, and ensures safety and reliability during loading and unloading.
[0033] The slide rail assembly provided in this embodiment is a cantilever with a three-layer structure. The middle slider 5 is slidably adjusted relative to the fixed rail 3, and the upper slide 4 is slidably adjusted relative to the middle slider 5, so that when the upper slide 4 carrying the cargo bracket 2 is fully extended out of the vehicle, the entire cantilever will not be too long, thereby greatly reducing the space, especially the space occupied in the front and rear directions. At the same time, a human-driven push-pull method is adopted to perform the translation function, which is safe and reliable and does not require power supply. It should be noted that in order to better perform distribution adjustment, a locking pin is screwed between the upper slide 4 and the middle slider 5. When the locking pin is installed between the upper slide 4 and the middle slider 5, the upper slide 4 and the middle slider 5 slide as a whole. After sliding to the appropriate position, the locking pin is unscrewed. At this time, the upper slide 4 can continue to slide, so as to achieve the effect that when the upper slide 4 is fully extended out of the vehicle, the entire cantilever will not be too long.
[0034] The lifting and lowering adjustment structure includes a worm gear reduction box 7, a bearing seat bracket 8, a main shaft 9 installed between the worm gear reduction box 7 and the bearing seat bracket 8, two double-groove rope wheels 10 fixedly sleeved on the main shaft 9, a front shaft 11 arranged in parallel at a position corresponding to one side of the main shaft 9, and two rope wheels 12 fixedly sleeved on the front shaft 11. When the carrier device of this embodiment is installed in the trunk of a car, it is placed in a direction in which the main shaft 9 faces outward and the front shaft 11 faces inward.
[0035] The worm gear reduction box 7 is fixedly installed at a position on one side of the top of one of the upper slideways 4, and the bearing seat bracket 8 is fixedly installed at a position on one side of the top of the other upper slideway 4. One end of the main shaft 9 is vertically rotatably connected to the bearing seat bracket 8, and the other end of the main shaft 9 is fixedly connected to the turbine shaft of the worm gear reduction box 7. In this embodiment, the self-locking function of the worm gear reduction box 7 is utilized to make the cargo bracket 2 rise and fall smoothly without slipping, which is safe and reliable. The worm gear reduction box 7 is externally provided with a rotating handle fixed to the worm. In order to reduce the occupied space, the rotating handle of this embodiment is a foldable structure, which can be folded back when not in use, reducing the probability of being damaged by bumps.
[0036] The front axle 11 is fixedly mounted between the other sides of the tops of the two upper slideways 4 through an axle seat, and the rope pulley 12 is fixed to the front axle 11 through a wheel frame. The traction member is four steel ropes 13. In other embodiments, a belt can also be used as a traction member, which will not be described in detail here.
[0037] Two of the steel wire ropes 13 are installed between the rope pulley 12 on one side and the double groove rope pulley 10, and the remaining two steel wire ropes 13 are installed between the rope pulley 12 on the other side and the double groove rope pulley 10. The two steel wire ropes 13 on the double groove rope pulley 10 are arranged in parallel, one end of one of the steel wire ropes 13 is fixed to the double groove rope pulley 10, the other end passes through the double groove rope pulley 10 and is suspended above the cargo bracket 2, and one end of the remaining steel wire rope 13 is fixed to the double groove rope pulley 10, the other end passes through the rope pulley 12 and is suspended above the cargo bracket 2. The rope pulley 12 of this embodiment plays the role of a fixed pulley.
[0038] The ends of the four steel wires 13 facing the cargo bracket 2 are located at the same height, and steel wire rope eyelets are fixedly installed at the four sides of the cargo bracket 2. In this embodiment, the ends of the steel wires 13 pass downward through the corresponding steel wire rope eyelets and return upward, and then are fixed with rope clamps to achieve the connection between the cargo bracket 2 and the steel wires 13, so as to lift and translate the cargo bracket 2 to achieve the purpose of loading the cargo, thereby carrying out the vehicle transportation of the cargo.
[0039] The lifting and lowering adjustment structure of this embodiment adopts a human-driven method to realize the smooth lifting / lowering of the cargo bracket 2. The specific operation is as follows: when the slide rail assembly drives the cargo bracket 2 to move outside the vehicle, the operating handle is rotated to make the worm and worm meshing transmission drive the main shaft 9 to rotate. At this time, the double-groove rope wheel 10 rotates and cooperates with the rope wheel 12 to drive the wire rope 13 to unwind, so as to realize the lowering of the cargo bracket 2 until the cargo bracket 2 is lowered to contact the ground. Please refer to Figure 3 , the operation can be stopped. After pushing items such as wheelchairs and transport carts onto the cargo bracket 2, the handle is rotated in the reverse direction to make the main shaft 9 rotate in the reverse direction. At this time, the wire rope 13 is wound up and drives the cargo bracket 2 to rise.
[0040] The process of using the loading device of this embodiment to load auxiliary tools such as vehicle-mounted wheelchairs, cargo carts, etc. into a vehicle compartment is as follows: First, open the rear door of the van, release the clamp, and pull out the indexing pin 6; Next, shake and rotate the handle to make the wire rope 13 pull the cargo bracket 2 to rise slightly, so that the bottom of the cargo bracket 2 is completely separated from the contact surface of the base 1, pull the upper slide 4 to drive the middle slide 5 to the set position, and screw in the indexing pin 6 to limit it, and then rotate the handle in the opposite direction to lower the cargo bracket 2 to the ground; Then, push the wheelchair / cargo trolley onto the cargo bracket 2 and bind it, shake and turn the handle to lift the cargo bracket 2 until the bottom surface of the cargo bracket 2 is higher than the floor of the carriage by a certain distance, pull out the indexing pin 6, and push the upper slide 4 and the middle slide 5 into the vehicle to return to the initial position; Finally, the indexing pin 6 is reset, the handle is shaken and turned to make the cargo bracket 2 fall into the base 1 and the wire rope 13 is no longer strained, the indexing pin 6 is inserted, and the clamp is operated to clamp the cargo bracket 2.
[0041] In summary, the loading device of this embodiment has the following advantages: simple structure, manual operation, safe and reliable, no need for power supply, the space occupied is mainly the frame of the carriage, and has little impact on the vehicle's cargo transportation. It can easily load wheelchairs, carts and more types of cargo, and greatly facilitates the safe loading of wheelchairs.
[0042] The above embodiments are merely preferred implementations of the present invention. Any simple modification, amendment and substitution of the above embodiments based on the technical essence of the present invention shall fall within the scope of the technical solution of the present invention.
Claims
1. A loading device for transporting goods on a vehicle, comprising a base (1) installed in a trunk of the vehicle; It is characterized in that The carrier also includes: A cargo bracket (2) placed in the base (1); Two sets of slide rail assemblies for driving the cargo bracket (2) to move horizontally, and fixedly mounted on the base (1); A lifting and lowering adjustment structure installed on two sets of slide rail assemblies, comprising a worm gear reduction box (7), a bearing seat bracket (8), a main shaft (9) installed between the worm gear reduction box (7) and the bearing seat bracket (8), two double-groove rope wheels (10) fixedly sleeved on the main shaft (9), a front shaft (11) arranged in parallel at a position corresponding to one side of the main shaft (9), and two rope wheels (12) fixedly sleeved on the front shaft (11); and A traction member used to connect the cargo bracket (2) and the lifting and lowering adjustment structure.
2. The loading device for transporting goods on a vehicle according to claim 1, characterized in that: The base (1) is detachably mounted on the bottom plate of the vehicle trunk by means of bolts, and the base (1) is a frame structure; The base (1) has a concave longitudinal cross-section, and both sides of the base (1) are provided with notches for fitting into the raised parts of the wheels of the vehicle trunk.
3. The loading device for transporting goods on a vehicle according to claim 1, characterized in that: An extension plate is welded at a position corresponding to one side of the cargo bracket (2), and the extension plate is arranged obliquely downward on the side facing away from the cargo bracket (2), and the lowest position of the extension plate is flush with the bottom surface of the cargo bracket (2).
4. The loading device for transporting goods on a vehicle according to claim 3, characterized in that: When the cargo bracket (2) is located in the base (1), the cargo bracket (2) and the base (1) are reinforced by four clamps, and the four clamps are evenly clamped at positions around the four sides.
5. The loading device for transporting goods on a vehicle according to claim 1, characterized in that: The slide rail assemblies are arranged transversely, and the two sets of slide rail assemblies are symmetrically distributed along the central axis of the base (1); Each set of slide rail assemblies is composed of a fixed rail (3), an upper slideway (4) and a middle slide block (5), and an indexing pin (6) is detachably mounted between the fixed rail (3), the upper slideway (4) and the middle slide block (5).
6. The loading device for transporting goods on a vehicle according to claim 5, characterized in that: The fixed rail (3), the upper slideway (4) and the middle slide block (5) form an I-shaped structure, and the middle slide block (5) is slidably arranged between the fixed rail (3) and the upper slideway (4); The fixed rail (3) and the cargo bracket (2) are fixedly connected, the upper slideway (4) is located above the fixed rail (3), and a handle is fixedly installed on the top of the upper slideway (4).
7. The loading device for transporting goods on a vehicle according to claim 6, characterized in that: The middle slide block (5) comprises an aluminum profile frame, an upper slide block and a lower slide block. The fixed rail (3) and the upper slideway (4) are both provided with a slide groove embedded with a polymer material. The upper slide block moves linearly along the slide groove in the upper slideway (4), and the lower slide block moves linearly along the slide groove in the fixed rail (3).
8. The loading device for transporting goods on a vehicle according to claim 1, characterized in that: The worm gear reduction box (7) is fixedly mounted on one side of the top of one of the upper slideways (4), and the bearing seat bracket (8) is fixedly mounted on one side of the top of the other upper slideway (4); one end of the main shaft (9) is vertically rotatably connected to the bearing seat bracket (8), and the other end of the main shaft (9) is fixedly connected to the turbine shaft of the worm gear reduction box (7); The worm gear reduction box (7) is externally provided with a rotating handle fixed to the worm, and the front shaft (11) is fixedly installed between the other sides of the tops of the two upper slideways (4) via a shaft seat.
9. The loading device for transporting goods on a vehicle according to claim 8, characterized in that: The traction member is four steel wire ropes (13); Two of the steel wire ropes (13) are installed between the rope wheel (12) on one side and the double-groove rope wheel (10), and the remaining two steel wire ropes (13) are installed between the rope wheel (12) on the other side and the double-groove rope wheel (10).
10. The loading device for transporting goods on a vehicle according to claim 9, characterized in that: Two steel wire ropes (13) on the double-groove rope pulley (10) are arranged in parallel, one end of one of the steel wire ropes (13) is fixed to the double-groove rope pulley (10), the other end of the steel wire rope passes around the double-groove rope pulley (10) and is suspended above the cargo bracket (2), and one end of the remaining steel wire rope (13) is fixed to the double-groove rope pulley (10), the other end of the steel wire rope passes around the rope pulley (12) and is suspended above the cargo bracket (2); The ends of the four steel wires (13) facing the cargo bracket (2) are located at the same height, and steel wire rope lifting rings are fixedly installed at positions around the cargo bracket (2).