A means of transport for stairs

Abstract

The present invention relates to a transport vehicle for stairs, comprising a ramp conveyor frame and a transport trolley, wherein the ramp conveyor frame is fixedly arranged along the slope of the stairs, and the transport trolley moves along the ramp conveyor frame. The ramp conveyor frame comprises a telescopic conveyor frame and a plurality of fixed conveyor frames arranged in a straight line from top to bottom, wherein the fixed conveyor frame comprises two fixed frames arranged in parallel, wherein the upper surfaces of the two fixed frames are fixedly provided with fixed rails and fixed chains along their lengths, and the telescopic conveyor frame comprises two telescopic outer frames arranged in parallel, wherein telescopic inner frames are slidably provided within the two telescopic outer frames, wherein the upper surfaces of the two telescopic outer frames are fixedly provided with telescopic outer rails and telescopic chains along their lengths. The purpose of the present invention is to solve or at least alleviate the problem that a trolley is prone to tipping over or losing control when moving along a guide rail laid on the stairs, and the problem that the guide rail has low applicability, and to provide a transport vehicle for stairs.

Description

Technical Field

[0001] The present invention belongs to the technical field of material transportation, and in particular relates to a transportation tool for stairs. Background Art

[0002] Equipment and materials are often transported within buildings using cranes and other lifting equipment. However, some loose equipment and materials cannot be packaged as a whole. Hoisting would affect parameters such as equipment size, installation accuracy, shape accuracy, and relative position. While hoisting is permitted for some small equipment, it is restricted and impacted at construction sites operating in small spaces or at sites subject to municipal regulations. Therefore, conventional material transportation methods—manual handling—are required in these situations.

[0003] However, manual handling often has some adverse consequences. First, it can easily cause equipment damage, economic losses, and project delays. When moving loose parts and equipment, more manpower is required, and multiple workers must move the same item in a coordinated manner. Due to abnormal walking, it is very easy to lose control and instability on the stairs, causing equipment to fall over and damage, resulting in not only economic losses but also extended construction time. At the same time, labor costs increase, resulting in increased construction costs. During the handling process, workers repeatedly go up and down the stairs, and the work they do is several times more than normal handling on flat roads. As the handling continues, the workers' physical strength decreases, making it easy for them to slack off.

[0004] To avoid this, rails are laid along the stairways during transportation. Equipment and materials are placed on trolleys, which are then pulled or pushed along the rails to the top of the stairs. However, the rails can slip or tilt on the stairs, causing the trolleys to topple over or lose control. Furthermore, different stairways have varying heights and lengths, making conventional rails inadequate. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art, solve or at least alleviate the problems of the trolley being prone to tipping over and losing control when moving along the guide rails laid on the stairs, and the low applicability of the guide rails, and to provide a means of transport for stairs.

[0006] The present invention is achieved through the following technical solutions:

[0007] A transport tool for stairs, the transport tool is arranged along the stairs, the transport tool comprises a slope conveying frame and a conveying vehicle, the slope conveying frame is fixedly arranged along the slope of the stairs, and the conveying vehicle moves along the slope conveying frame;

[0008] The slope conveyor frame includes a telescopic conveyor frame and a plurality of fixed conveyor frames arranged in a straight line from top to bottom. The lower end of the telescopic conveyor frame is detachably connected to the upper end of the adjacent fixed conveyor frame, and any two adjacent fixed conveyor frames are detachably connected.

[0009] The fixed conveyor frame includes two fixed frame bodies arranged in parallel, and the upper surfaces of the two fixed frame bodies are fixedly provided with fixed rails and fixed chains along their length directions. The corresponding fixed frame bodies of two adjacent fixed conveyor frames are detachably connected, and the corresponding fixed rails and fixed chains of the two adjacent fixed conveyor frames are connected;

[0010] The two wheels are fixedly mounted on the two extension rails, and the two extension rails are connected to each other with a pair of locks, and the locks are fixed on the two extension rails.

[0011] The transport vehicle includes a vehicle body, and travel wheels are rotatably arranged at the four corners of the vehicle body. The travel wheels are rollingly arranged in a fixed track, a telescopic outer track or a telescopic inner track. Travel sprockets are arranged on both sides of the rear of the vehicle body, and the travel sprockets are engaged with a fixed chain or a telescopic chain.

[0012] In order to further realize the present invention, the following technical solutions may be preferably used:

[0013] Preferably, the lower surfaces of the fixed frame and the telescopic outer frame are both provided with positioning components along their length directions, and the positioning components include a positioning plate, one end of the positioning plate is hinged to the fixed frame or the telescopic outer frame, and a telescopic adjustment rod is provided between the other end and the fixed frame or the telescopic outer frame, the lower end of the telescopic adjustment rod is hinged to the positioning plate, and the upper end is hinged to the fixed frame or the telescopic outer frame, and the positioning plate is arranged on the step plane of the stair slope.

[0014] Preferably, a tightening assembly is provided on both sides of the fixed frame and the telescopic outer frame, and the tightening assembly includes a tightening telescopic rod, the fixed end of the tightening telescopic rod is fixedly provided on the side of the fixed frame or the telescopic outer frame, and the telescopic end of the tightening telescopic rod extends laterally outward.

[0015] The sliding block is screwed on the inner side of the telescopic frame and is screwed on the slider sleeve, and the slider sleeve is screwed on the inner side of the telescopic frame, and the slider sleeve is screwed on the outer side of the telescopic frame, and the slider sleeve is screwed on the slider sleeve, and the slider sleeve is screwed on the slider sleeve along its length.

[0016] Preferably, the outer circumferential wall of the slider rotating rod located in a section of the telescopic outer frame is fixedly provided with a convex sliding key along its length direction, and the inner circumferential wall of the slider screw sleeve is provided with a concave sliding groove along its length direction, and the sliding groove is slidably fitted on the sliding key along the length direction of the sliding key.

[0017] Preferably, the telescopic adjustment assembly also includes a frame gear and a slider gear, which are respectively fixedly fitted on the frame screw and the slider rotating rod extending out of the telescopic outer frame close to one end of the fixed conveyor frame, the frame gear and the slider gear are meshed with each other, and the number of teeth of the frame gear is twice the number of teeth of the slider gear.

[0018] Preferably, a lifting plate is provided on the rear side of the vehicle body for sliding along its height direction, a sprocket shaft is provided on the lifting plate for horizontal rotation, the two traveling sprockets are respectively solidly fitted on both ends of the sprocket shaft, a traveling motor is fixedly provided on the lifting plate, and the output shaft of the traveling motor is transmission-connected to the sprocket shaft.

[0019] Preferably, a shape adjustment mechanism is provided on the front side of the vehicle body, and the shape adjustment mechanism includes a lifting screw, a worm gear sleeve, an adjustment shaft and an adjustment motor. The two lifting screws are respectively vertically arranged on both sides of the vehicle body and are both rotatably and slidingly connected to the vehicle body. The two walking wheels are respectively arranged at the lower ends of the two lifting screws, and the worm gear sleeve is fixedly rotatably arranged on the vehicle body. The two worm gear sleeves are respectively threadedly fitted on the two lifting screws, and the adjustment shaft is laterally rotatably arranged on the vehicle body. Two worms are respectively fixedly provided at both ends of the adjustment shaft, and the two worms are respectively meshed with the two worm gear sleeves for transmission. The adjustment motor is fixedly arranged on the vehicle body and its output shaft is transmission-connected to the adjustment shaft.

[0020] Preferably, the transport vehicle further includes a backstop assembly, the backstop assembly includes a backstop plate, the fixed conveyor frame and the telescopic conveyor frame are both provided with the backstop plate, the backstop plate is longitudinally slidably arranged on the fixed conveyor frame or the telescopic conveyor frame and is located under the vehicle body, a spring is provided between the backstop plate and the fixed conveyor frame or the telescopic conveyor frame, the spring drives the backstop plate to move upward, a plurality of backstop blocks are equidistantly arranged in an array along the length direction of the backstop plate, the backstop blocks are in the form of a right-angled triangle with a high front and a low back, a plurality of backstop grooves are equidistantly arranged on the bottom surface of the vehicle body along the length direction thereof, and the distance between adjacent backstop grooves is equal to the distance between adjacent backstop blocks;

[0021] When the anti-retraction groove moves to above the anti-retraction block, the anti-retraction block is embedded in the anti-retraction groove.

[0022] Preferably, a cross beam is provided between the two fixed frames of the fixed conveyor frame and between the two telescopic outer frames of the telescopic conveyor frame, and the two ends of the cross beam are respectively fixedly connected to the two fixed frames or the two telescopic outer frames, and a guide rod is fixedly provided longitudinally on the lower surface of the backstop plate, and the guide rod is longitudinally slidably fitted on the cross beam, and the spring is slidably fitted on the guide rod, and the upper and lower ends of the spring respectively abut against the backstop plate and the cross beam, and the lower end of the guide rod extends out of the cross beam and is fixedly provided with a limit plate, and when the upper surface of the limit plate is in contact with the lower surface of the cross beam, the upper surface of the backstop plate slides and fits the lower surface of the vehicle body.

[0023] Through the above technical solution, the beneficial effects of the present invention are:

[0024] The slope conveying frame of the present invention comprises a telescopic conveying frame and a fixed conveying frame. By arranging different numbers of fixed conveying frames and adjusting the length of the telescopic conveying frame, the slope conveying frame can be applied to stairs of different heights and lengths, thereby greatly improving applicability.

[0025] The present invention is provided with a fixed chain and a telescopic chain, both of which are arranged parallel to the guide rail. At the same time, the running wheels and the running sprockets of the conveyor vehicle move along the guide rail and the chain respectively, which greatly increases the stability and reliability of the vehicle during movement.

[0026] The present invention is equipped with a positioning assembly and a tightening assembly. The angle of the positioning plate is adjusted to position it on the stair step surface, and the length of the tightening telescopic rod is adjusted to ensure it contacts the wall. This not only prevents the guide rail from sliding or tilting on the stairs, but also allows for adaptation to stairs of varying angles, increasing applicability.

[0027] The telescopic conveyor frame of the present invention is provided with a telescopic adjustment component, through which the telescopic inner frame and the slider move simultaneously and in the same direction, and the movement speed of the slider is twice the movement speed of the telescopic inner frame, thereby ensuring the stability and reliability of the telescopic conveyor frame during adjustment and operation.

[0028] The present invention is provided with a retreat-stopping component, so that when the conveying vehicle moves upward on the slope conveying frame, a large stroke will not slide down, thereby ensuring safety during transportation.

[0029] The vehicle body of the present invention is equipped with a lifting plate that can adjust the height of the running sprocket. When the transport vehicle is pushed on the ground, the running sprocket rises to prevent interference with the ground. After the transport vehicle enters the sloped conveyor frame, the running sprocket descends to facilitate engagement with the fixed chain and the telescopic chain.

[0030] The front portion of the transport vehicle of the present invention is provided with a shape adjustment mechanism. When the transport vehicle moves to the top of the inclined conveyor frame and the front end of the transport vehicle extends out of the inclined conveyor frame, the lifting screw and the running wheel at its lower end gradually extend downward. The running wheel rolls and fits the plane at the top of the stairs, maintaining the transport vehicle in a stable shape and preventing the transport vehicle from tilting and overturning. At the same time, the running sprocket at the rear of the transport vehicle is ensured to reliably engage with the telescopic chain. When the transport vehicle continues to move upward, the running sprocket disengages the telescopic chain, and the running wheel at the rear of the transport vehicle also rolls and fits the plane at the top of the stairs, the lifting screw and the running wheel at its lower end gradually retract upward, maintaining the transport vehicle in a horizontal shape. This ensures the stability and reliability of the transport vehicle as it enters the upper landing of the stairs from the stair ramp. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 is a side view of the present invention;

[0033] Figure 3 It is a structural schematic diagram of the fixed conveyor frame of the present invention;

[0034] Figure 4 It is a structural schematic diagram of the telescopic conveyor frame of the present invention;

[0035] Figure 5 This is one of the structural schematic diagrams of the telescopic conveyor frame of the present invention;

[0036] Figure 6 This is the second structural diagram of the telescopic conveyor frame of the present invention;

[0037] Figure 7 It is a structural schematic diagram of the telescopic inner frame and the telescopic inner track of the present invention;

[0038] Figure 8 This is one of the structural schematic diagrams of the transport vehicle of the present invention;

[0039] Figure 9 This is the second structural diagram of the transport vehicle of the present invention;

[0040] Figure 10 For the present invention Figure 5 Enlarged view of point A in the middle;

[0041] Figure 11 For the present invention Figure 5 Enlarged view of point B in the middle;

[0042] Figure 12 For the present invention Figure 5 Enlarged view of point C in the middle;

[0043] Figure 13 For the present invention Figure 6 Enlarged view of point D in the middle;

[0044] Figure 14 For the present invention Figure 6 Enlarged view of point E in the middle;

[0045] Among them: 1-fixed frame; 2-fixed track; 3-fixed chain; 4-telescopic outer frame; 5-telescopic inner frame; 6-telescopic outer track; 7-telescopic inner track; 8-telescopic chain; 9-flip sprocket; 10-slider; 11-car body; 12-travel wheel; 13-travel sprocket; 14-positioning plate; 15-telescopic adjustment rod; 16-tightening telescopic rod; 17-frame screw; 18-slider rotating rod; 19-slider nut sleeve; 20-lifting plate; 21-sprocket shaft; 22-travel motor; 23-lifting screw; 24-worm gear nut sleeve; 25-adjusting shaft; 26-adjusting motor; 27-stop plate; 28-stop block; 29-guide rod; 30-crossbeam. DETAILED DESCRIPTION

[0046] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0048] Example 1:

[0049] like Figures 1-14As shown, a transport tool for stairs is arranged along the stairs, and the transport tool includes a slope conveying frame and a transport vehicle. The slope conveying frame is fixedly arranged along the slope of the stairs, and the transport vehicle moves along the slope conveying frame;

[0050] The slope conveyor frame includes a telescopic conveyor frame and several fixed conveyor frames arranged in a straight line from top to bottom. The lower end of the telescopic conveyor frame is detachably connected to the upper end of the adjacent fixed conveyor frame, and any two adjacent fixed conveyor frames are detachably connected.

[0051] The fixed conveyor frame includes two parallel fixed frame bodies 1, and the upper surfaces of the two fixed frame bodies 1 are fixedly provided with fixed rails 2 and fixed chains 3 along their length directions. The corresponding fixed frame bodies 1 of two adjacent fixed conveyor frames are detachably connected, and the corresponding fixed rails 2 and fixed chains 3 of the two adjacent fixed conveyor frames are connected.

[0052] The telescopic conveyor frame includes two parallel telescopic outer frames 4, each of which is slidably provided with a telescopic inner frame 5, and the upper surfaces of the two telescopic outer frames 4 are fixedly provided with a telescopic outer rail 6 and a telescopic chain 8 along their length directions. The upper surfaces of the two telescopic inner frames 5 are fixedly provided with a telescopic inner rail 7 along their length directions, and the telescopic inner rail 7 is fixedly connected to the telescopic inner frame 5 at one end away from the telescopic outer frame 4, and the telescopic inner rail 7 is slidingly provided in the telescopic outer rail 6 near the telescopic outer frame 4. The end of the telescopic inner frame 5 away from the telescopic outer frame 4 is rotatably provided with a flip sprocket 9, and a slider 10 is provided on the lower side of the telescopic inner frame 5 for sliding along its length direction. One end of the telescopic chain 8 is fixedly connected to the telescopic outer frame 4 and is connected to the fixed chain 3 of the fixed conveyor frame adjacent to the telescopic conveyor frame. The other end of the telescopic chain 8 is first laid along the upper surface of the telescopic inner frame 5, and after being flipped downward by the flip sprocket 9, it is laid along the lower surface of the telescopic inner frame 5 and fixedly connected to the slider 10;

[0053] The transport vehicle includes a vehicle body 11, and running wheels 12 are rotatably provided at the four corners of the vehicle body 11. The running wheels 12 are rollingly set in the fixed track 2, the telescopic outer track 6 or the telescopic inner track 7. Running sprockets 13 are provided on both sides of the rear part of the vehicle body 11, and the running sprockets 13 are engaged with the fixed chain 3 or the telescopic chain 8.

[0054] In order to prevent the slope conveyor frame from sliding and to be suitable for stairs with different angles, positioning components are provided on the lower surfaces of the fixed frame 1 and the telescopic outer frame 4 along their length directions. The positioning components include a positioning plate 14, one end of the positioning plate 14 is hinged to the fixed frame 1 or the telescopic outer frame 4, and a telescopic adjustment rod 15 is provided between the other end and the fixed frame 1 or the telescopic outer frame 4. The lower end of the telescopic adjustment rod 15 is hinged to the positioning plate 14, and the upper end is hinged to the fixed frame 1 or the telescopic outer frame 4. The positioning plate 14 is arranged on the step plane of the stair slope; the telescopic adjustment rod 15 includes an upper sleeve, a lower sleeve and positive and negative thread screws. The lower end of the lower sleeve is hinged to the positioning plate 14, and the upper end of the upper sleeve is hinged to the fixed frame 1 or the telescopic outer frame 4. The two ends of the positive and negative thread screws are positive thread threads and negative thread threads respectively, and are threadedly fitted on the upper sleeve and the lower sleeve respectively.

[0055] In order to prevent the slope conveyor frame from tilting, a tightening assembly is provided on both sides of the fixed frame 1 and the telescopic outer frame 4. The tightening assembly includes a tightening telescopic rod 16. The fixed end of the tightening telescopic rod 16 is fixedly arranged on the side of the fixed frame 1 or the telescopic outer frame 4, and the telescopic end of the tightening telescopic rod 16 extends laterally outward.

[0056] The telescopic conveyor frame also includes a telescopic adjustment component, which includes a frame screw 17, a slider rotating rod 18 and a slider screw sleeve 19. The frame screw 17 and the slider rotating rod 18 are both rotatably arranged in the telescopic outer frame 4. The end of the frame screw 17 and the slider rotating rod 18 away from the fixed conveyor frame is flush with the end of the telescopic outer frame 4 away from the fixed conveyor frame. The end of the frame screw 17 and the slider rotating rod 18 close to the fixed conveyor frame is rotatably arranged at the end of the telescopic outer frame 4 close to the fixed conveyor frame. The slider screw sleeve 19 is arranged along the telescopic inner frame 4. The frame body 5 is arranged in the telescopic inner frame body 5 in the length direction, and the two ends of the slider screw sleeve 19 are respectively fixed and rotatably arranged at the two ends of the telescopic inner frame body 5. The outer side surface of the telescopic inner frame body 5 slides and fits on the inner side surface of the telescopic outer frame body 4. The end of the telescopic inner frame body 5 close to the telescopic outer frame body 4 is threadedly fitted on the frame body screw 17, and the slider 10 slides and fits on the inner side surface of the telescopic inner frame body 5 and is threadedly fitted on the slider screw sleeve 19. The slider screw sleeve 19 slides and fits on the slider rotating rod 18 along its length direction, and the slider rotating rod 18 drives the slider screw sleeve 19 to rotate.

[0057] In order to make the slider screw sleeve 19 slide along the slider rotating rod 18 and rotate with the slider rotating rod 18, the outer wall of the slider rotating rod 18 located in a section inside the telescopic outer frame 4 is fixed with a convex sliding key along its length direction, and the inner wall of the slider screw sleeve 19 is provided with a concave sliding groove along its length direction, and the sliding groove slides and fits on the sliding key along the length direction of the sliding key.

[0058] In order to enable the telescopic adjustment component to make the telescopic inner frame 5 and the slider 10 move simultaneously and in the same direction, and the movement speed of the slider 10 is twice the movement speed of the telescopic inner frame 5, to ensure the stability and reliability of the telescopic conveyor frame during adjustment and operation, the telescopic adjustment component also includes a frame gear and a slider gear, which are respectively fixedly fitted on the frame screw 17 and the slider rotating rod 18, extending out of the telescopic outer frame 4 near one end of the fixed conveyor frame, and the frame gear and the slider gear are engaged with each other, and the number of teeth of the frame gear is twice the number of teeth of the slider gear.

[0059] A lifting platform 20 is mounted on the rear side of the vehicle body 11, sliding along its height. A sprocket shaft 21 is mounted on the lifting platform 20 for transverse rotation. Two running sprockets 13 are respectively fitted onto the ends of the sprocket shafts 21. A running motor 22 is fixedly mounted on the lifting platform 20, and the output shaft of the running motor 22 is in driving connection with the sprocket shafts 21. The lifting platform 20 can adjust the height of the running sprockets 13. When the transport vehicle is pushed on the ground, the running sprockets 13 rise to prevent interference with the ground. After the transport vehicle enters the inclined conveyor frame, the running sprockets 13 descend to facilitate engagement with the fixed chain 3 and the telescopic chain 8.

[0060] A shape adjustment mechanism is provided on the front side of the vehicle body 11, and the shape adjustment mechanism includes a lifting screw 23, a worm gear sleeve 24, an adjustment shaft 25 and an adjustment motor 26. The two lifting screws 23 are respectively vertically arranged on both sides of the vehicle body 11 and are both rotatably and slidingly connected to the vehicle body 11. The two walking wheels 12 are respectively arranged at the lower ends of the two lifting screws 23, and the worm gear sleeve 24 is fixedly rotatably arranged on the vehicle body 11. The two worm gear sleeves 24 are respectively threadedly fitted on the two lifting screws 23, and the adjustment shaft 25 is laterally rotatably arranged on the vehicle body 11. Two worms are respectively fixedly provided at both ends of the adjustment shaft 25, and the two worms are respectively engaged with the two worm gear sleeves 24 for transmission. The adjustment motor 26 is fixedly provided on the vehicle body 11 and its output shaft is transmission-connected to the adjustment shaft 25.

[0061] The upper part of the traveling wheel 12 located below the lifting screw 23 is rotatably connected to the lower end of the lifting screw 23, and the upper part of the traveling wheel 12 located at the rear of the vehicle body 11 is rotatably connected to the vehicle body 11. A battery is provided on the vehicle body 11, and the battery provides power for the traveling motor 22 and the adjustment motor 26.

[0062] When the transport vehicle reaches the top of the ramp and its front end extends out of the ramp, the lifting screw 23 and the running wheel 12 at its lower end gradually extend downward. The running wheel 12 rolls against the flat surface at the top of the stairs, maintaining the transport vehicle in a stable position and preventing it from tilting or overturning. This also ensures that the running sprocket 13 at the rear of the transport vehicle is securely engaged with the telescopic chain 8. As the transport vehicle continues to move upward, the running sprocket 13 disengages from the telescopic chain 8, and the running wheel 12 at the rear of the transport vehicle also rolls against the flat surface at the top of the stairs. The lifting screw 23 and the running wheel 12 at its lower end gradually retract upward, maintaining the transport vehicle in a horizontal position. This ensures the stability and reliability of the transport vehicle as it descends the stair ramp to the upper landing.

[0063] The present invention is provided with a backstop assembly, so that when the transport vehicle moves upward on the slope conveyor frame, it will not slide down a large distance, thereby ensuring safety during transportation. The transport vehicle also includes a backstop assembly, which includes a backstop plate 27. Both the fixed conveyor frame and the telescopic conveyor frame are provided with a backstop plate 27. The backstop plate 27 is longitudinally slidably arranged on the fixed conveyor frame or the telescopic conveyor frame and is located below the vehicle body 11. A spring is provided between the backstop plate 27 and the fixed conveyor frame or the telescopic conveyor frame, and the spring drives the backstop plate 27 to move upward. The upper surface of the backstop plate 27 is provided with a plurality of backstop blocks 28 in an equidistant array along its length. The backstop blocks 28 are in the form of a right triangle with a high front and a low back. The bottom surface of the vehicle body 11 is provided with a plurality of backstop grooves in an equidistant array along its length. The distance between adjacent backstop grooves is equal to the distance between adjacent backstop blocks 28.

[0064] When the anti-retraction groove moves to above the anti-retraction block 28, the anti-retraction block 28 is embedded in the anti-retraction groove.

[0065] In order to ensure the stability of the anti-recognition plate 27 when it is raised and lowered, a cross beam 30 is provided between the two fixed frames 1 of the fixed conveyor frame and between the two telescopic outer frames 4 of the telescopic conveyor frame. The two ends of the cross beam 30 are respectively fixedly connected to the two fixed frames 1 or the two telescopic outer frames 4. A guide rod 29 is fixedly provided on the lower surface of the anti-recognition plate 27 in the longitudinal direction. The guide rod 29 slides longitudinally on the cross beam 30, and the spring slides on the guide rod 29. The upper and lower ends of the spring respectively touch the anti-recognition plate 27 and the cross beam 30. The lower end of the guide rod 29 extends out of the cross beam 30 and is fixedly provided with a limit plate. When the upper surface of the limit plate is in contact with the lower surface of the cross beam 30, the upper surface of the anti-recognition plate 27 slides in contact with the lower surface of the vehicle body 11.

[0066] The slope conveying frame of the present invention comprises a telescopic conveying frame and a fixed conveying frame. By arranging different numbers of fixed conveying frames and adjusting the length of the telescopic conveying frame, the slope conveying frame can be applied to stairs of different heights and lengths, thereby greatly improving applicability.

[0067] The present invention is provided with a fixed chain 3 and a telescopic chain 8, both of which are arranged parallel to the guide rail. At the same time, the running wheels 12 and the running sprockets 13 of the conveyor vehicle move along the guide rail and the chain respectively, which greatly increases the stability and reliability of the vehicle during movement.

[0068] The present invention is equipped with a positioning assembly and a tightening assembly. The angle of the positioning plate 14 is adjusted so that it is placed on the step plane of the stair slope, and the length of the tightening telescopic rod 16 is adjusted so that it contacts the wall. This not only prevents the guide rail from sliding and tilting on the stairs, but also adapts to stairs of different angles, increasing its applicability.

[0069] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A transport vehicle for stairs, the transport vehicle being arranged along the stairs, characterized in that: The transport means includes a slope conveying frame and a conveying vehicle, wherein the slope conveying frame is fixedly arranged along the slope of the stairs, and the conveying vehicle moves along the slope conveying frame; The slope conveyor frame includes a telescopic conveyor frame and a plurality of fixed conveyor frames arranged in a straight line from top to bottom. The lower end of the telescopic conveyor frame is detachably connected to the upper end of the adjacent fixed conveyor frame, and any two adjacent fixed conveyor frames are detachably connected. The fixed conveying frame comprises two fixed frames (1) arranged in parallel, and the upper surfaces of the two fixed frames (1) are fixedly provided with fixed rails (2) and fixed chains (3) along the length direction thereof, and the corresponding fixed frames (1) of the two adjacent fixed conveying frames are detachably connected, and the corresponding fixed rails (2) and fixed chains (3) of the two adjacent fixed conveying frames are connected; The telescopic conveying frame comprises two parallel telescopic outer frames (4), a telescopic inner frame (5) is slidably arranged in each of the two telescopic outer frames (4), a telescopic outer rail (6) and a telescopic chain (8) are fixedly arranged on the upper surfaces of the two telescopic outer frames (4) along their length direction, a telescopic inner rail (7) is fixedly arranged on the upper surfaces of the two telescopic inner frames (5) along their length direction, one end of the telescopic inner rail (7) away from the telescopic outer frame (4) is fixedly connected to the telescopic inner frame (5), and a section of the telescopic inner rail (7) close to the telescopic outer frame (4) is slidably arranged on the telescopic outer frame (6) and the telescopic chain (8) are fixedly arranged on the upper surfaces of the two telescopic inner frames (5) along their length direction. In the outer track (6), the telescopic inner frame (5) is rotatably provided with a flip sprocket (9) at one end thereof away from the telescopic outer frame (4), and a slider (10) is slidably provided on the lower side of the telescopic inner frame (5) along its length direction. One end of the telescopic chain (8) is fixedly connected to the telescopic outer frame (4) and is connected to the fixed chain (3) of the fixed conveying frame adjacent to the telescopic conveying frame. The other end of the telescopic chain (8) is first laid along the upper surface of the telescopic inner frame (5), and after being flipped downward by the flip sprocket (9), is laid along the lower surface of the telescopic inner frame (5) and fixedly connected to the slider (10). The transport vehicle comprises a vehicle body (11), wherein the vehicle body (11) is provided with travel wheels (12) at four corners thereof for rotation, wherein the travel wheels (12) are arranged to roll on a fixed track (2), a telescopic outer track (6) or a telescopic inner track (7), and travel sprockets (13) are provided on both sides of the rear portion of the vehicle body (11), wherein the travel sprockets (13) are engaged with a fixed chain (3) or a telescopic chain (8); The telescopic conveying frame also includes a telescopic adjustment component, which includes a frame screw (17), a slider rotating rod (18) and a slider screw sleeve (19). The frame screw (17) and the slider rotating rod (18) are both rotatably arranged in the telescopic outer frame (4). The end of the frame screw (17) and the slider rotating rod (18) away from the fixed conveying frame is flush with the end of the telescopic outer frame (4) away from the fixed conveying frame. The end of the frame screw (17) and the slider rotating rod (18) close to the fixed conveying frame is rotatably arranged on the end of the telescopic outer frame (4) close to the fixed conveying frame. The slider screw sleeve (19) is arranged along the telescopic inner frame. The body (5) is arranged in the telescopic inner frame (5) in the length direction, and the two ends of the slider screw sleeve (19) are respectively fixed and rotatably arranged at the two ends of the telescopic inner frame (5). The outer side surface of the telescopic inner frame (5) is slidably fitted on the inner side surface of the telescopic outer frame (4), and one end of the telescopic inner frame (5) close to the telescopic outer frame (4) is threadedly fitted on the frame screw (17). The slider (10) is slidably fitted on the inner side surface of the telescopic inner frame (5) and threadedly fitted on the slider screw sleeve (19). The slider screw sleeve (19) is slidably fitted on the slider rotating rod (18) along its length direction, and the slider rotating rod (18) drives the slider screw sleeve (19) to rotate.

2. A transport vehicle for stairs according to claim 1, characterized in that: The lower surfaces of the fixed frame (1) and the telescopic outer frame (4) are both provided with positioning components along their length direction, and the positioning components include a positioning plate (14), one end of the positioning plate (14) is hinged to the fixed frame (1) or the telescopic outer frame (4), and a telescopic adjustment rod (15) is provided between the other end and the fixed frame (1) or the telescopic outer frame (4), the lower end of the telescopic adjustment rod (15) is hinged to the positioning plate (14), and the upper end is hinged to the fixed frame (1) or the telescopic outer frame (4), and the positioning plate (14) is arranged on the step plane of the stair slope.

3. A transport vehicle for stairs according to claim 2, characterized in that: Both sides of the fixed frame (1) and the telescopic outer frame (4) are provided with a tightening assembly, and the tightening assembly includes a tightening telescopic rod (16), the fixed end of the tightening telescopic rod (16) is fixedly arranged on the side of the fixed frame (1) or the telescopic outer frame (4), and the telescopic end of the tightening telescopic rod (16) extends outward laterally.

4. A transport vehicle for stairs according to claim 1, characterized in that: The slider rotating rod (18) is located in a section of the telescopic outer frame (4) and is fixedly provided with an outward convex sliding key along its length direction. The slider screw sleeve (19) is provided with an inward concave sliding groove along its length direction. The sliding groove is slidably fitted on the sliding key along the length direction of the sliding key.

5. A transportation tool for stairs according to claim 1, characterized in that: The telescopic adjustment assembly further comprises a frame gear and a slider gear, wherein the frame gear and the slider gear are respectively fixedly fitted on the frame screw (17) and the slider rotating rod (18) extending out of a section of the telescopic outer frame (4) close to one end of the fixed conveying frame, the frame gear and the slider gear are meshed with each other, and the number of teeth of the frame gear is twice the number of teeth of the slider gear.

6. A transportation tool for stairs according to claim 1, characterized in that: A lifting plate (20) is provided on the rear side of the vehicle body (11) for sliding along its height direction. A sprocket shaft (21) is provided on the lifting plate (20) for transverse rotation. The two traveling sprockets (13) are respectively solidly fitted on both ends of the sprocket shaft (21). A traveling motor (22) is fixedly provided on the lifting plate (20). The output shaft of the traveling motor (22) is in transmission connection with the sprocket shaft (21).

7. A transportation tool for stairs according to claim 1, characterized in that: The front side of the vehicle body (11) is provided with a shape adjustment mechanism, which includes a lifting screw (23), a worm gear sleeve (24), an adjustment shaft (25) and an adjustment motor (26). The two lifting screws (23) are respectively vertically arranged on both sides of the vehicle body (11) and are both rotatably and slidingly connected to the vehicle body (11). The two running wheels (12) are respectively arranged at the lower ends of the two lifting screws (23). The worm gear sleeve (24) is fixedly rotatably arranged on the vehicle body (11). The two worm gear sleeves (24) are respectively threadedly sleeved on the two lifting screws (23). The adjustment shaft (25) is rotatably arranged on the vehicle body (11). Two worms are respectively fixedly arranged at both ends of the adjustment shaft (25). The two worms are respectively meshed with the two worm gear sleeves (24) for transmission. The adjustment motor (26) is fixedly arranged on the vehicle body (11) and its output shaft is transmission-connected to the adjustment shaft (25).

8. The transport vehicle for stairs according to claim 1, characterized in that: The transport vehicle also includes a backstop assembly, the backstop assembly includes a backstop plate (27), the fixed conveying frame and the telescopic conveying frame are both provided with the backstop plate (27), the backstop plate (27) is longitudinally slidably arranged on the fixed conveying frame or the telescopic conveying frame and is located below the vehicle body (11), a spring is provided between the backstop plate (27) and the fixed conveying frame or the telescopic conveying frame, the spring drives the backstop plate (27) to move upward, a plurality of backstop blocks (28) are provided on the upper surface of the backstop plate (27) along its length in an equidistant array, the backstop blocks (28) are in the shape of a right triangle with a high front and a low back, a plurality of backstop grooves are provided on the bottom surface of the vehicle body (11) along its length in an equidistant array, and the distance between adjacent backstop grooves is equal to the distance between adjacent backstop blocks (28); When the anti-retraction groove moves to above the anti-retraction block (28), the anti-retraction block (28) is embedded in the anti-retraction groove.

9. A transportation tool for stairs according to claim 8, characterized in that: A crossbeam (30) is provided between the two fixed frames (1) of the fixed conveyor frame and between the two telescopic outer frames (4) of the telescopic conveyor frame. The two ends of the crossbeam (30) are respectively fixedly connected to the two fixed frames (1) or the two telescopic outer frames (4). A guide rod (29) is fixedly provided on the lower surface of the stop plate (27) in the longitudinal direction. The guide rod (29) is longitudinally slidably fitted on the crossbeam (30). The spring is slidably fitted on the guide rod (29). The upper and lower ends of the spring respectively abut against the stop plate (27) and the crossbeam (30). The lower end of the guide rod (29) extends out of the crossbeam (30) and is fixedly provided with a limit plate. When the upper surface of the limit plate is in contact with the lower surface of the crossbeam (30), the upper surface of the stop plate (27) is slidably fitted on the lower surface of the vehicle body (11).

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