Transport vehicle upstairs and downstairs structure and transport vehicle

Abstract

The utility model provides a transport vehicle upstairs and downstairs structure and a transport vehicle, and belongs to the field of transport equipment.The transport vehicle upstairs and downstairs structure comprises a driving motor, a speed reducer and an action mechanism which are installed on a bearing framework, the driving motor is in transmission connection with the speed reducer, and the action mechanism comprises a motion box arm, a swing rod, a supporting rod and a sliding assembly; a power input shaft sleeve is arranged at one end of the movement box arm, a movement output shaft is arranged at the other end of the movement box arm, the speed reducer is inserted into the power input shaft sleeve through a driving output shaft, the movement output shaft is rotationally connected with one end of the swing rod, and the swing rod is rotationally connected with the middle of the supporting rod. A sliding block in the sliding assembly is rotationally installed on the upper portion of the supporting rod. The motion mechanism drives the motion box arm to rotate and drives the swing rod, the supporting rod moves upstairs and downstairs under the constraint of the sliding assembly, the supporting rod can adapt to most stairs with different heights through simple adjustment of the inclination angle, and better environmental adaptability is achieved.

Description

Technical Field

[0001] The utility model relates to the field of transport machinery, in particular to an up-and-down stair structure of a transport vehicle and a transport vehicle. Background Art

[0002] There are many mechanical structures currently used for transport vehicles to go up and down stairs, the most common ones include the following:

[0003] 1. Planetary Wheel Intelligent Stair Transporter: This type of transporter uses planetary wheels to achieve arbitrary curved motion, including rotation, curved turns, and stair climbing. However, its adaptability to real-world scenarios is insufficient, and it may encounter adaptability issues in complex stair environments, resulting in limited universal applicability.

[0004] 2. Wheel-type stair climbing devices: These devices can put significant pressure on the stair edges when climbing, potentially damaging the stair structure. Furthermore, they create significant resistance when used on flat ground, making turning difficult, and can be unstable and subject to significant fluctuations in the center of gravity.

[0005] 3. Gear-and-Four-Bar Mechanism Handling Device: This device utilizes gears and a four-bar mechanism to move goods up and down stairs through the reciprocating motion of wheels. The connecting rod outputs a rotational motion, with adjustable angle and speed, improving handling efficiency and reducing labor intensity. However, current designs require complex control systems to ensure precise operation and are susceptible to damage.

[0006] 4. Tracked passenger stair climbers: Traditional tracked stair climbers are heavy and costly. New designs utilize a wheel-track hybrid mechanism, reducing the weight of the structure. The design includes a track drive mechanism, a wheel-switch mechanism, a wheelchair-mounting adjustment mechanism, and a motion control system. However, this structure is more complex, resulting in an increased failure rate and reduced reliability, while still being relatively heavy. Furthermore, the complex design of the hybrid mechanism increases maintenance difficulty and costs.

[0007] 5. Leverage-based auxiliary mechanical device: A lever-based "eagle claw" sliding sleeve design allows for smooth sliding around the bends of stair handrails, allowing heavy objects to be evenly dragged along the handrail's slope, improving handling efficiency and convenience. However, this requires the construction of a track and is ineffective for unsupported stairways.

[0008] In summary, the current stair climbing mechanical structures have their own advantages and disadvantages. In practical applications, a stair climbing device that is more optimized, simple in structure, can work reliably, and is easy to maintain is needed. Utility Model Content

[0009] The purpose of the present invention is to overcome the shortcomings of the above-mentioned traditional technology and provide a transport vehicle up and down stair structure and a transport vehicle to solve the technical problems of the above-mentioned complex climbing structure, heavy structure, difficult maintenance and poor reliability.

[0010] The purpose of this utility model is achieved through the following technical measures:

[0011] A transport vehicle up and downstairs structure includes a load-bearing frame, a drive motor, a reducer and an action mechanism installed on the load-bearing frame, and the drive motor is connected to the reducer in a transmission manner, characterized in that the action mechanism includes a motion box arm, a rocker arm, a strut and a sliding assembly, one end of the motion box arm has a power input shaft sleeve, the other end of the motion box arm is provided with a motion output shaft, the reducer has a drive output shaft, the drive output shaft is inserted into the power input shaft sleeve of the motion box arm, one end of the motion output shaft extends out of the motion box arm and is rotatably connected to one end of the rocker arm, and the other end of the rocker arm is rotatably connected to the middle of the strut, and the sliding assembly includes a slide bar and a slider, the slider is mounted on the slide bar and slidably matched, the two ends of the slide bar are fixedly placed on the load-bearing frame, one end of the slider is rotatably installed on the upper part of the strut, and the lower part of the strut is a load-bearing foot.

[0012] As a preferred solution, the motion box arm includes a motion box body and an internal transmission mechanism installed in the motion box body, the internal transmission mechanism includes a driving gear, a driven gear and a transmission chain, and the driving gear and the driven gear are connected through a transmission chain.

[0013] As a preferred solution, the motion box body includes a main box body and two gear cover plates, and the two gear cover plates are arranged opposite to each other and are installed on the main box body through a connecting shaft.

[0014] As a preferred solution, one side of the driving gear is fixedly connected to a gear mounting seat, and the gear mounting seat is fixedly mounted on the reducer. The driving output shaft of the reducer is coaxially arranged with the gear mounting seat and extends out of the gear mounting seat and the driving gear.

[0015] As a preferred solution, the power input shaft sleeve is arranged inside the main box body and is integrally arranged with or fixedly connected to the main box body.

[0016] As a preferred solution, the power input shaft sleeve is sleeved with a first bearing, and the driving gear is sleeved on the power input shaft sleeve through the first bearing.

[0017] As a preferred solution, the axis sleeve of the driven gear is provided with an output spline sleeve, the motion output shaft is inserted into the output spline sleeve, and both ends of the output spline sleeve are slidably mounted on the gear cover.

[0018] As a preferred solution, a cover plate mounting slot is provided on the main box body, and the length direction of the cover plate mounting slot is consistent with the length direction of the main box body. A mounting circular hole is provided on the gear cover plate that matches the cover plate mounting slot, and the connecting shaft passes through the mounting circular holes of the two gear cover plates and the cover plate mounting slot to connect the gear cover plate and the main box body; a tensioning adjustment base is provided in the middle position inside the main box body, an eccentric shaft mounting slot is provided in the middle of the tensioning adjustment base, an eccentric shaft is rotatably installed in the eccentric shaft mounting slot, an eccentric shaft hole is provided on the gear cover plate, and both ends of the eccentric shaft are rotatably installed in the eccentric shaft holes of the gear cover plate, and the eccentric shaft is rotated to make the gear cover plate move along the length direction of the cover plate mounting slot to adjust the distance between the gear cover plate and the driven gear and the driving gear, thereby realizing chain tension adjustment.

[0019] A transport vehicle comprises a vehicle body and running wheels installed at the lower part of the vehicle body, and is characterized in that the above-mentioned transport vehicle up and down stair structure and power supply system are installed on the vehicle body.

[0020] As a preferred solution, the vehicle body is integrated with the load-bearing frame of the upper and lower stair structures of the transport vehicle. The integrated arrangement of the vehicle body and the load-bearing frame reduces the weight of the overall structure, improves the carrying capacity, reduces the physical effort of transportation, and also increases the overall structural strength.

[0021] Due to the adoption of the above technical solution, compared with the prior art, the advantages of the present invention are:

[0022] The utility model discloses a stair climbing structure for a transport vehicle and a transport vehicle adopting the structure, wherein an action mechanism driven by a motor deceleration is used to perform the stair climbing action, the action mechanism adopts a motor to drive a motion box arm to rotate, and then drives a swing rod to rotate, and the swing rod rotates to drive a strut to realize the strut climbing action under the constraint of a sliding component, that is, all components work together to convert the rotation of the swing rod into an up and down, front and back cyclical climbing action, and the lower part of the strut is used to realize the action of stepping up the stairs or stepping down the stairs step by step like a human foot. The climbing action of the utility model is close to that of a person, and the transport vehicle can adapt to most stairs of different heights by adjusting the inclination angle of the transport vehicle on the stairs, thereby having better environmental adaptability, and solving the technical problems of complex climbing structure, heavy structure, difficult maintenance and poor reliability.

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Attachment Figure 1 It is a schematic diagram of the exploded structure of the upstairs and downstairs structure of the transport vehicle of the utility model.

[0025] Attachment Figure 2 It is a partial structural diagram of the moving box body in the upstairs and downstairs structure of the transport vehicle of the utility model.

[0026] Attachment Figure 3 It is a schematic diagram of the exploded structure of the moving box body in the upstairs and downstairs structure of the transport vehicle of the utility model.

[0027] Attachment Figure 4 It is a structural schematic diagram of the eccentric shaft in the upstairs and downstairs structure of the transport vehicle of the utility model.

[0028] In the figure: 1. reducer; 2. motion box arm; 20. motion box body; 21. main box body; 22. gear cover; 3. rocker arm; 4. strut; 5. sliding assembly; 51. slide bar; 52. slider; 6. power input shaft sleeve; 7. motion output shaft; 8. drive output shaft; 9. rocker arm shaft; 10. rocker arm shaft hole; 11. load-bearing foot; 12. drive gear; 13. driven gear; 14. transmission chain; 15. gear mounting seat; 16. first bearing; 17. output spline sleeve; 18. cover mounting slot; 19. mounting circular hole; 23. tensioning adjustment base; 24. eccentric shaft mounting slot; 25. eccentric shaft; 26. eccentric shaft hole; 27. second bearing. DETAILED DESCRIPTION

[0029] Example 1: Figures 1 to 4 As shown, a transport vehicle up and down the stairs structure includes a load-bearing frame, on which a drive motor, a reducer 1 and an action mechanism are installed. The drive motor is connected to the reducer 1 in a transmission manner. The action mechanism includes a motion box arm 2, a rocker 3, a strut 4 and a sliding assembly 5. One end of the motion box arm 2 has a power input shaft sleeve 6, and the other end of the motion box arm 2 is provided with a motion output shaft 7. The reducer 1 has a drive output shaft 8, which is inserted into the power input shaft sleeve 6 of the motion box arm 2. The drive output shaft 8 is connected to the power input shaft sleeve 6 of the motion box arm 2. The input shaft sleeve 6 is splined; one end of the motion output shaft 7 extends out of the motion box arm 2 and is rotationally connected to one end of the rocker arm 3. The other end of the rocker arm 3 is rotationally connected to the rocker arm shaft hole 10 in the middle of the support rod 4 via the rocker arm shaft 9. The sliding assembly 5 includes a slide bar 51 and a slider 52. The slider 52 is mounted on the slide bar 51 and slides in engagement. The two ends of the slide bar 51 are fixedly mounted on the load-bearing frame. One end of the slider 52 is rotationally mounted in the slider shaft hole in the upper portion of the support rod 4 via a rotating shaft. The lower portion of the support rod 4 serves as a load-bearing foot 11. The load-bearing frame is used to mount the sliding assembly. In the product, it is the same structure as the transport vehicle body. It can have various adaptable designs depending on the appearance of the transport vehicle and is not shown in the accompanying drawings. The transport vehicle's stair-climbing structure of this application is driven by the output of the reducer on both sides, driving the mirrored structures on both sides to perform the same movement or to perform alternating stepping and lifting movements. Therefore, only one side is shown in the accompanying drawings; the other side is a symmetrical mirrored structure. The drive motor is set according to the required load capacity. There are many commercially available products, which are not shown in the accompanying drawings.

[0030] like Figures 1 to 3As shown, the motion box arm 2 includes a motion box body 20 and an internal transmission mechanism installed in the motion box body 20, the internal transmission mechanism includes a driving gear 12, a driven gear 13 and a transmission chain 14, and the driving gear 12 and the driven gear 13 are connected to each other through the transmission chain 14.

[0031] The motion box body 20 includes a main box body 21 and two gear cover plates 22 . The two gear cover plates 22 are arranged opposite to each other and are mounted on the main box body 21 through a connecting shaft.

[0032] One side of the driving gear 12 is fixedly connected to a gear mounting seat 15 , and the gear mounting seat 15 is fixedly mounted on the reducer 1 . The driving output shaft 8 of the reducer 1 is coaxially arranged with the gear mounting seat 15 and extends out of the gear mounting seat 15 and the driving gear 12 .

[0033] The power input shaft sleeve 6 is disposed inside the main box body 21 and is integrally disposed with or fixedly connected to the main box body 21 .

[0034] The power input shaft sleeve 6 is sleeved with a first bearing 16 , and the driving gear 12 is sleeved on the power input shaft sleeve 6 through the first bearing 16 .

[0035] The output spline sleeve 17 is mounted on the axis of the driven gear 13 , and the motion output shaft 7 is inserted into the output spline sleeve 17 . Both ends of the output spline sleeve 17 are slidably mounted on the gear cover plate 22 via second bearings 27 .

[0036] like Figures 1 to 4 As shown, the main box body 21 is provided with a cover plate mounting slot 18, the length direction of the cover plate mounting slot 18 is consistent with the length direction of the main box body 21, the gear cover plate 22 is provided with a mounting circular hole 19 that matches the cover plate mounting slot 18, and the connecting shaft passes through the mounting circular holes 19 and the cover plate mounting slot 18 of the two gear cover plates 22 to connect the gear cover plate 22 and the main box body 21 as a whole; the middle position inside the main box body 21 is provided with a tensioning adjustment base 23, An eccentric shaft mounting groove 24 is provided in the middle of the tensioning adjustment base 23, and an eccentric shaft 25 is rotatably mounted in the eccentric shaft mounting groove 24. An eccentric shaft hole 26 is provided on the gear cover plate, and both ends of the eccentric shaft 25 are rotatably mounted in the eccentric shaft holes 26 of the gear cover plate 22. The eccentric shaft 25 is rotated to make the gear cover plate 22 move along the length direction of the cover plate mounting groove hole 18 to adjust the distance between the gear cover plate 22 and the driven gear 13 and the driving gear 12, thereby realizing the tension adjustment of the transmission chain 14.

[0037] In this application, the up and down stairs action is achieved by the following motion mode: Take the up stairs as an example, the driving motor drives the action mechanism on both sides through the reducer 1, the drive output shaft 8 of the reducer 1 is inserted into the power input shaft sleeve 6 of the main box body 21 through the spline, the drive output shaft 8 drives the motion box body 20 to rotate, the driven gear 13 is mounted on the main box 21 by the bearing 27 and the gear cover 22, the driven gear 13 rotates together with the motion box 20. At the same time, since the driven gear 13 is connected to the driving gear 12 by the chain 14, the driving gear 12 is driven by the gear Mounting base 15 is fixedly mounted on reducer 1. Driven gear 13, driven by chain 14, drives gear 12, which in turn rotates. Driven gear 13, via splined motion output shaft 7, drives rocker arm 3 to rotate. Rocker arm 3, via rocker arm shaft 9, drives strut 4. Because one end of strut 4 is restricted by slider 52 and can only move up and down along slide bar 51, the lower end of strut 4 is lifted, extended, lowered, and retracted repeatedly, creating a circular motion trajectory, mimicking the human motion of climbing stairs. The motor can be driven in the reverse direction for descending stairs.

[0038] Example 2: A transport vehicle comprises a vehicle body and running wheels installed at the lower part of the vehicle body, and the above-mentioned transport vehicle up and down structure and power supply system are installed on the vehicle body.

[0039] The vehicle body is integrated with the load-bearing frame in the upper and lower floors of the transport vehicle. The integrated arrangement of the vehicle body and the load-bearing frame reduces the weight of the overall structure, improves the carrying capacity, reduces the physical effort of transportation, and also increases the overall structural strength.

[0040] The up-and-down structure of the transport vehicle disclosed in the present application can be applied to a variety of equipment that needs to move up and down, and can lift goods step by step. Its movements are similar to those of humans walking, and it has strong environmental adaptability and can be applied to most equipment that needs to be lifted step by step.

Claims

1. A transport vehicle up and down stairs structure, comprising a load-bearing frame, on which a drive motor, a reducer and an action mechanism are mounted, wherein the drive motor is in transmission connection with the reducer, and is characterized in that: The action mechanism includes a motion box arm, a rocker arm, a strut and a sliding assembly, one end of the motion box arm has a power input sleeve, the other end of the motion box arm is provided with a motion output shaft, the reducer has a drive output shaft, the drive output shaft is inserted into the power input sleeve of the motion box arm, one end of the motion output shaft extends out of the motion box arm and is rotatably connected to one end of the rocker arm, the other end of the rocker arm is rotatably connected to the middle part of the strut, the sliding assembly includes a slide bar and a slider, the slider is mounted on the slide bar and slidably matched, the two ends of the slide bar are fixedly placed on the load-bearing frame, one end of the slider is rotatably installed on the upper part of the strut, and the lower part of the strut is a load-bearing foot.

2. The transport vehicle up and down stairs structure according to claim 1, characterized in that: The motion box arm includes a motion box body and an internal transmission mechanism installed in the motion box body. The internal transmission mechanism includes a driving gear, a driven gear and a transmission chain. The driving gear and the driven gear are connected through the transmission chain.

3. The transport vehicle up and down stairs structure according to claim 2, characterized in that: The motion box body comprises a main box body and two gear cover plates, and the two gear cover plates are arranged opposite to each other and are mounted on the main box body through a connecting shaft.

4. The transport vehicle up and down stairs structure according to claim 3, characterized in that: One side of the driving gear is fixedly connected to a gear mounting seat, and the gear mounting seat is fixedly mounted on the reducer. The driving output shaft of the reducer is coaxially arranged with the gear mounting seat and extends out of the gear mounting seat and the driving gear.

5. The transport vehicle up and down stairs structure according to claim 4, characterized in that: The power input shaft sleeve is arranged inside the main box body and is integrally arranged with or fixedly connected to the main box body.

6. The transport vehicle up and down stairs structure according to claim 5, characterized in that: The power input shaft sleeve is sleeved with a first bearing, and the driving gear is sleeved on the power input shaft sleeve through the first bearing.

7. The transport vehicle up and down stairs structure according to claim 2, characterized in that: The axis sleeve of the driven gear is provided with an output spline sleeve, the motion output shaft is inserted into the output spline sleeve, and both ends of the output spline sleeve are slidably mounted on the gear cover plate.

8. The transport vehicle up and down stairs structure according to claim 3, characterized in that: The main box body is provided with a cover plate mounting slot, the length direction of the cover plate mounting slot is consistent with the length direction of the main box body, the gear cover is provided with a mounting circular hole that matches the cover plate mounting slot, and the connecting shaft passes through the mounting circular holes of the two gear cover plates and the cover plate mounting slot to connect the gear cover plate and the main box body; the middle position inside the main box body is provided with a tensioning adjustment base, the middle part of the tensioning adjustment base is provided with an eccentric shaft mounting slot, an eccentric shaft is rotatably installed in the eccentric shaft mounting slot, an eccentric shaft hole is provided on the gear cover plate, both ends of the eccentric shaft are rotatably installed in the eccentric shaft holes of the gear cover plate, and the eccentric shaft is rotated to make the gear cover plate move along the length direction of the cover plate mounting slot to adjust the distance between the gear cover plate and the driven gear and the driving gear, thereby realizing chain tension adjustment.

9. A transport vehicle comprising a vehicle body and running wheels mounted on the lower portion of the vehicle body, characterized in that: The vehicle body is equipped with the transport vehicle up and down stairs structure and power supply system as described in any one of claims 1-8.

10. The transport vehicle according to claim 9, characterized in that: The vehicle body is integrated with the load-bearing frame in the upper and lower stair structures of the transport vehicle.

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