Lift Scooter

Abstract

The present invention relates to a lifting scooter, which belongs to a small lifting and transporting machine. The technical solution adopted by the present invention is: it includes a mobile chassis, a lifting frame with scissor forks is arranged on the mobile chassis, a hydraulic cylinder is arranged inside the lifting frame to drive the scissor forks of the lifting frame, and the top of the lifting frame is a lifting platform, which is characterized in that the mobile chassis is provided with foot platforms on both sides of the lifting frame, and the lower part of the foot platform is provided with a pneumatic rod, and the lower part of the pneumatic rod is fixed on the mobile chassis. The lower part of the mobile chassis is provided with two groups of guide devices, and the guide device moves along a single group of guide rails laid on the ground. The advantages of the present invention are: it can move along the track, which is suitable for the transportation of assembly line parts in large-scale factories; the lifting platform can rotate, which is suitable for angle adjustment of equipment during installation and transportation; a foot platform is provided at the edge position to facilitate foot-operated transportation of equipment; it is electrically driven and suitable for factory use.

Description

Technical Field

[0001] The invention relates to a lifting scooter, belonging to a small lifting and transporting machine. Background Art

[0002] For some large equipment production lines, it is often necessary to install various parts with equally large volume and weight. The traditional way is to use a forklift for transportation, and then use on-site lifting equipment to jack up and install, or use a sling for lifting. If a jacking device is used, or a transport trolley that does not require jacking is used for transportation and installation, there will also be problems with the need to adjust the installation angle of the parts. For example, some parts are wider than the width of the lift or transport vehicle, and the angle needs to be adjusted on site before installation. This has to be adjusted again with the help of a sling. Multiple transportation equipment needs to be uniformly deployed, affecting production progress.

[0003] At the production sites of some transportation equipment, various heavy parts need to be transported. For the transportation of batches of equipment parts at the production site, considering the safety requirements of the production site and the quality requirements during the equipment transportation process, the transportation of related equipment parts is standardized as much as possible to meet the quality production requirements.

[0004] The traditional method of transportation is to transport to the site by hoisting or transporting by a transport cart, but this method has high requirements for the transportation site and the quality of the operators.

[0005] At present, automatic transport carts along the conveying path have appeared in the market. They can move autonomously and transport equipment parts in batches along the specified path. This requires high control automation, such as using ground color markings for guided walking, or guided walking according to electromagnetic points on the ground. However, the above equipment has high production costs and high failure rates, which is not conducive to product promotion. Summary of the invention

[0006] The invention provides a lifting scooter, which is used for transporting parts and realizes the functions of the transport trolley moving along a guide rail, being able to be lifted and lowered, and assisting in going up and down.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] The lifting scooter comprises a mobile chassis, a lifting frame with scissor forks is arranged on the mobile chassis, a hydraulic cylinder is arranged inside the lifting frame to drive the scissor forks of the lifting frame, and the top of the lifting frame is a lifting platform. The feature is that the mobile chassis is provided with foot platforms on both sides of the lifting frame, a gas pressure rod is arranged at the lower part of the foot pressure platform, the lower part of the gas pressure rod is fixed on the mobile chassis, and two sets of guide devices are arranged at the lower part of the mobile chassis, and the guide devices move along a single set of guide rails laid on the ground.

[0009] Preferably, the lifting frame is provided with two sets of scissor fork structures, and the two sets of scissor forks are symmetrically arranged with respect to the middle line of the moving direction of the mobile chassis. The hinge shafts at the same height and the same direction of the two symmetrical scissor fork structures are shared, the cylinder body of the hydraulic cylinder is fixed at the middle position of the hinge shaft at the lower part of the scissor fork structure, and the extending piston of the hydraulic cylinder is fixed at the middle position of the hinge shaft at the lower part of the scissor fork structure.

[0010] Preferably, a lifting platform hinge shaft fixing pin hole is provided on the front or rear side of the bottom of the lifting platform, and the hinge shafts on one side of the top of the two symmetrical scissors fork structures pass through the above-mentioned lifting platform hinge shaft fixing pin hole, and two upper slide grooves symmetrical to the center line of the lifting platform are provided on the other side of the bottom of the lifting platform, and the upper slide grooves are arranged in the horizontal direction, and rollers are arranged at both ends of the hinge shafts on one side of the top of the two symmetrical scissors fork structures and placed in the upper slide grooves at the bottom of the lifting platform on the same side; a chassis hinge shaft fixing pin hole is also provided on the rear end or front end of the upper side surface of the mobile chassis, and the hinge shafts on one side of the lower part of the two symmetrical scissors fork structures pass through the above-mentioned chassis hinge shaft fixing pin hole, and two lower slide grooves symmetrical along the center line of the mobile chassis are provided on the other end of the upper side surface of the mobile chassis, and the lower slide grooves are arranged horizontally, and lower rollers are arranged at both ends of the hinge shafts on the other side of the lower part of the two symmetrical scissors fork structures and placed in the lower slide grooves.

[0011] Preferably, two pairs of moving wheels are provided at the lower part of the mobile chassis, and chain plates are respectively provided on the axles of the two pairs of moving wheels. The chain plates of the two axles are connected by chains, and the axles of one pair of moving wheels are connected to the output shaft of the driving motor through a synchronous transmission mechanism. The synchronous transmission mechanism passes through the mobile chassis to connect the output shaft and the axle of the driving motor, and the driving motor is arranged on the front side or rear side of the lifting frame on the mobile chassis.

[0012] Preferably, the guide device is arranged on the middle line of the lower side of the mobile chassis, with one at the front and one at the back. The guide device includes a pair of parallel guide rollers and a limiting roller perpendicular to the center line of the guide rollers. The two parallel guide rollers are vertically arranged, and the guide rail laid on the ground is placed between the two guide rollers. The two side surfaces of the guide rail are in contact with the guide rollers. The wheel axles of the guide rollers and the limiting rollers are simultaneously arranged on the guide wheel frame. The guide wheel frame is arranged on the mobile chassis through the guide shaft, and the guide wheel frame can rotate around the guide shaft.

[0013] Preferably, the guide shaft passes through a guide fixing hole provided on the mobile chassis, and a buffer spring is sleeved on the guide shaft, and the buffer spring keeps the guide wheel frame from contacting the bottom plate of the guide fixing hole provided on the conveying trolley.

[0014] Preferably, the lifting platform comprises a bottom platform, a middle rotating platform and an upper rotating platform. The lower side of the bottom platform is fixed to the top of the lifting frame. The bottom platform, the middle rotating platform and the upper rotating platform are connected in series through the middle central axis. The upper rotating platform can be removed and only the bottom platform and the middle rotating platform are retained. Evenly arranged rolling balls are provided on the upper side of the bottom platform and the lower side of the upper rotating platform. The lower side and the upper side of the middle rotating platform serve as contact surfaces for the rolling balls.

[0015] Preferably, the foot platform is a strip plate, and at least two groups of gas pressure rods are arranged below the foot platform. The foot platform is located below the edge of the lifting platform in the vertical direction near the inner edge. When the lifting platform descends to the lower part, it will press down the edge of the foot platform to drive the foot platform downward, and the foot platform compresses the gas pressure rod at this time.

[0016] Further preferably, a battery pack and a hydraulic station are also provided on the mobile chassis, the hydraulic station provides hydraulic power for the hydraulic cylinder, and the battery pack provides power for the drive motor.

[0017] Preferably, a scissor-fork structure support is provided below the footrest platform.

[0018] The advantages of the present invention are:

[0019] 1. The transport trolley can move along the track, which is suitable for the transportation of assembly line parts in large-scale factories;

[0020] 2. The lifting platform can be rotated, which is suitable for adjusting the angle of the equipment during installation and transportation;

[0021] 3. There is a pedal platform at the edge to facilitate the equipment to be transported by foot;

[0022] 4. Electric drive, suitable for factory use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an upper stereoscopic view of the present invention,

[0024] Figure 2 is a bottom stereoscopic view of the present invention;

[0025] Figure 3 is a side view of the present invention,

[0026] Figure 4 is a top view of the present invention,

[0027] Figure 5 yes Figure 4 In the A-direction view,

[0028] Figure 6 yes Figure 4 In the B-direction view,

[0029] Figure 7 is a structural diagram of the guide device of the present invention,

[0030] Reference numerals:

[0031] 1 mobile chassis 2 lifting frame 3 hydraulic cylinder 4 lifting platform 5 pedal platform 6 pneumatic rod 7 guide device 8 guide rail 9 hinge shaft 10 upper slide groove 11 upper roller 12 lower slide groove 13 lower roller 14 moving wheel 15 wheel axle 16 chain plate 17 driving motor 18 guide roller 19 guide wheel frame 20 limiting roller 21 bottom platform 22 middle rotating platform 23 upper rotating platform 24 guide shaft 25 middle shaft 26 pedal support 27 synchronous transmission mechanism. DETAILED DESCRIPTION

[0032] The specific mechanism of the present invention is further described below:

[0033] The lifting scooter of the present invention has a structure as shown in the figure, which includes a mobile chassis 1, a lifting frame 2 with a scissor fork is arranged on the mobile chassis 1, a hydraulic cylinder 3 is arranged in the lifting frame 2 to drive the scissor fork of the lifting frame 2, and the top of the lifting frame 2 is a lifting platform 4.

[0034] The specific structure of the lifting frame 2 is that it is provided with two sets of scissor fork structures symmetrically arranged along the center line of the mobile chassis. The hinge shaft 9 at the same height and the same direction of the two symmetrical scissor fork structures is shared, the cylinder body of the hydraulic cylinder 3 is fixed to the middle position of the hinge shaft 9 at the lower part of the scissor fork structure, and the extended piston of the hydraulic cylinder 3 is fixed to the middle position of the hinge shaft 9 at the lower part of the scissor fork structure.

[0035] The bottom front side of the lifting platform 4 is provided with a fixing pin hole for the lifting platform hinge shaft 9, and the hinge shaft 9 on one side of the top of the two symmetrical scissor fork structures passes through the fixing pin hole of the lifting platform hinge shaft 9. Two upper slide grooves 10 symmetrical to the center line of the lifting platform 4 are provided on the other side of the bottom of the lifting platform 4. The upper slide grooves 10 are arranged in the horizontal direction. Upper rollers 11 are arranged at both ends of the hinge shaft 9 on the other side of the top of the two symmetrical scissor fork structures and placed in the upper slide grooves 10. The front end of the upper side surface of the mobile chassis 1 is also provided with a fixing pin hole for the chassis hinge shaft 9, and the hinge shaft 9 on one side of the lower part of the two symmetrical scissor fork structures passes through the fixing pin hole of the chassis hinge shaft 9. Two lower slide grooves 12 symmetrical along the center line of the mobile chassis 1 are provided on the other end of the upper side surface of the mobile chassis 1. The lower slide grooves 12 are arranged horizontally, and lower rollers 13 are arranged at both ends of the hinge shaft 9 on the other side of the lower part of the two symmetrical scissor fork structures and placed in the lower slide grooves 12.

[0036] The hydraulic cylinder is extended and retracted to drive the scissor fork structure to compress in the horizontal plane and extend in the height direction to achieve the purpose of lifting. The lifting frame is raised and lowered in height to drive the lifting platform to rise and fall. The purpose of lifting the material to the installation height is achieved.

[0037] The mobile chassis 1 is provided with a pedal platform 5 on both sides of the lifting frame 2. The pedal platform 5 is a strip-shaped plate. Two groups of gas pressure rods 6 are provided at the lower part of the pedal platform 5. The lower part of the gas pressure rod 6 is fixed to the edge of the mobile chassis 1. The pedal platform 5 is located below the edge of the lifting platform 4 in the vertical direction near the inner edge. A pedal support with a scissor fork structure is also provided below the pedal platform 5. The upper end of the pedal support is fixed to the pedal platform 5, and the lower end is fixed to the mobile chassis 1. Specifically, a sliding device is provided on one side of the scissor fork mechanism of the pedal support to realize the change of the width of the two ends of the scissor fork mechanism when the scissor fork mechanism rises or falls. When the lifting platform 4 descends to the lower part, it will press down the edge of the pedal platform 5 to drive the pedal platform 5 downward, and the pedal platform 5 compresses the gas pressure rod 6 at this time.

[0038] The foot platform 5 can be used as the operator's footrest during use. As the lifting platform rises, the foot platform 5 pressed down by the lifting platform rises as the pneumatic rod recovers, and the operator standing on the foot platform rises accordingly, achieving the rise of the operator's footrest position, making it convenient to rise to a suitable height to adjust the angle of the equipment components of the lifting platform for installation.

[0039] The structure of the mobile platform is described below. Two pairs of mobile wheels 14 are provided at the lower part of the mobile chassis 1. The two pairs of mobile wheels 14 are arranged one in front and one behind at the bottom of the mobile chassis. The wheel axles of each pair of mobile wheels are fixed to the bottom of the mobile chassis through bearings and bearing seats. The wheel axles 15 of the two pairs of mobile wheels 14 are respectively provided with chain plates 16 on the same side of the mobile chassis, and the chain plates 16 of the two wheel axles 15 are connected by chains. The wheel axles 15 of the pair of mobile wheels 14 at the front end of the mobile chassis are connected to the output shaft of the drive motor 17 through a synchronous transmission mechanism. The synchronous transmission mechanism passes through the mobile chassis 1 to connect the output shaft and the wheel axles 15 of the drive motor 17. The drive motor 17 is arranged on the front side of the lifting frame 2 on the mobile chassis 1. A battery pack and a hydraulic station are also provided on the mobile chassis 1. The hydraulic station provides hydraulic power for the hydraulic cylinder 3, and the battery pack provides power for the drive motor 17.

[0040] Two sets of guide devices 7 are provided at the middle position of the lower side of the mobile chassis 1, one set at the front and one set at the back. The guide device 7 moves along a single set of guide rails 8 laid on the ground. The guide device 7 includes a pair of parallel guide rollers 18 and a limit roller 20 perpendicular to the center line of the guide rollers 18. The two parallel guide rollers 18 are vertically arranged. The guide rollers 18 are placed between the two guide rollers 18 on the guide rails 8 laid on the ground. The two sides of the guide rails 8 are in contact with the guide rollers 18. The axes of the guide rollers 18 and the limit rollers 20 are simultaneously arranged on the guide wheel frame 19. The guide wheel frame 19 is fixed to the lower section of the guide shaft 24. The guide shaft 24 is arranged in the guide hole of the mobile chassis 1, and the guide wheel frame 19 can rotate around the guide shaft 24. In order to adapt to the mobile chassis leaving the ground due to uneven ground, a buffer spring is arranged on the guide shaft. One end of the buffer spring is fixed to the lower end of the guide shaft 24, and the other end is fixed to the mobile chassis, so as to keep the distance between the guide wheel frame 19 and the mobile chassis. When the ground where the track is located is too low, the deadweight of the mobile chassis and the deadweight of the lifting frame and the lifting platform compresses the spring to prevent the moving wheel 14 from leaving the ground, and the limiting roller 20 applies force to the track.

[0041] The structure of the lifting platform 4 is described below. The lifting platform 4 includes a bottom platform 21, a middle rotating platform 22 and an upper rotating platform 23. The lower side of the bottom platform 21 is fixed to the top of the lifting frame 2. The bottom platform 21, the middle rotating platform 22 and the upper rotating platform 23 are connected in series through the middle axis 25. The upper rotating platform 23 can be removed to only retain the bottom platform 21 and the middle rotating platform 22. The upper side of the bottom platform 21 and the lower side of the upper rotating platform 23 are provided with evenly arranged rolling balls, and the lower side and lower side of the middle rotating platform 22 serve as the contact surface of the rolling balls. The upper side of the upper rotating platform 23 and the middle rotating platform are provided with shock-absorbing pads except for the contact position of the rolling balls, and the large parts and equipment are transported on the shock-absorbing pads. The middle axis and the upper rotating platform can be removed to facilitate the placement of parts and equipment on the middle rotating platform.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lifting scooter, comprising a mobile chassis (1), a lifting frame (2) with scissor forks arranged on the mobile chassis (1), a hydraulic cylinder (3) arranged in the lifting frame (2) to drive the scissor forks of the lifting frame (2), and a lifting platform (4) on the top of the lifting frame (2), wherein: The mobile chassis (1) is provided with foot platforms (5) on both sides of the lifting frame (2), and a pneumatic rod (6) is provided at the bottom of the foot platform (5). The bottom of the pneumatic rod (6) is fixed to the mobile chassis (1). The bottom of the mobile chassis (1) is provided with two sets of guide devices (7), and the guide devices (7) move along a single set of guide rails (8) laid on the ground. Two pairs of moving wheels (14) are provided at the bottom of the moving chassis (1), and chain plates (16) are respectively provided on the wheel axles (15) of the two pairs of moving wheels (14). The chain plates (16) of the two wheel axles (15) are connected by a chain. The wheel axles (15) of one pair of moving wheels (14) are connected to the output shaft of a driving motor (17) via a synchronous transmission mechanism. The synchronous transmission mechanism passes through the moving chassis (1) to connect the output shaft of the driving motor (17) and the wheel axle (15). The driving motor (17) is arranged on the front side or the rear side of the lifting frame (2) on the moving chassis (1); The guide device (7) is arranged on the middle line of the lower side surface of the mobile chassis (1), and one guide device (7) is arranged at the front and rear, respectively. The guide device (7) comprises a pair of parallel guide rollers (18) and a limit roller (20) perpendicular to the center line of the guide rollers (18). The two parallel guide rollers (18) are arranged vertically, and the guide rollers (18) are placed between the two guide rollers on a guide rail (8) laid on the ground. The two sides of the guide rail (8) are in contact with the guide rollers (18). The wheel shafts (15) of the guide rollers (18) and the limit rollers (20) are arranged on a guide wheel frame (19) at the same time. The guide wheel frame (19) is arranged on the mobile chassis (1) through a guide shaft (24), and the guide wheel frame (19) can rotate around the guide shaft (24). The guide shaft (24) passes through a guide fixing hole provided on the mobile chassis (1), and a buffer spring is sleeved on the guide shaft (24). The buffer spring keeps the guide wheel frame (19) from contacting the bottom plate of the guide fixing hole provided on the conveying trolley.

2. The lifting scooter according to claim 1, characterized in that: The lifting frame (2) is provided with two sets of scissor fork structures, the two sets of scissor forks are symmetrically arranged relative to the middle line of the moving direction of the moving chassis (1), the hinge shafts (9) at the same height and the same direction of the two symmetrical scissor fork structures are shared, the cylinder body of the hydraulic cylinder (3) is fixed at the middle position of the hinge shaft (9) at the bottom of the scissor fork structure, and the extended piston of the hydraulic cylinder (3) is fixed at the middle position of the hinge shaft (9) at the bottom of the scissor fork structure.

3. The lifting scooter according to claim 2, characterized in that: A lifting platform hinge shaft (9) fixing pin hole is provided on the front side or the rear side of the bottom of the lifting platform (4); a hinge shaft (9) on one side of the top of the two symmetrical scissor fork structures passes through the fixing pin hole of the lifting platform hinge shaft (9); two upper slide grooves (10) symmetrical with respect to the center line of the lifting platform (4) are provided on the other side of the bottom of the lifting platform (4); the upper slide grooves (10) are arranged in the horizontal direction; upper rollers (11) are provided at both ends of the hinge shaft (9) on one side of the top of the two symmetrical scissor fork structures and are placed on the upper slide grooves (11) at the bottom of the lifting platform (4) on the same side. 10); a chassis hinge shaft (9) fixing pin hole is also provided at the rear end or the front end on the upper side surface of the mobile chassis (1); a hinge shaft (9) on one side of the lower part of the two symmetrical scissor fork structures passes through the above-mentioned chassis hinge shaft (9) fixing pin hole; two lower slide grooves (12) symmetrical along the center line of the mobile chassis (1) are provided on the other end of the upper side surface of the mobile chassis (1); the lower slide grooves (12) are arranged horizontally; lower rollers (13) are provided at both ends of the hinge shaft (9) on the other side of the lower part of the two symmetrical scissor fork structures and are placed in the lower slide grooves (12).

4. The lifting scooter according to claim 1, characterized in that: The lifting platform (4) comprises a bottom platform (21), a middle rotating platform (22) and an upper rotating platform (23); the lower side of the bottom platform (21) is fixed to the top of the lifting frame (2); the bottom platform (21), the middle rotating platform (22) and the upper rotating platform (23) are connected in series via a central axis (25); the upper rotating platform (23) can be removed so that only the bottom platform (21) and the middle rotating platform (22) are retained; the upper side of the bottom platform (21) and the lower side of the upper rotating platform (23) are provided with rolling balls arranged evenly; the lower side and the lower side of the middle rotating platform (22) serve as contact surfaces for the rolling balls.

5. The lifting scooter according to claim 1, characterized in that: The pedal platform (5) is a strip-shaped plate. At least two groups of gas pressure rods (6) are arranged below the pedal platform (5). The pedal platform (5) is located below the edge of the lifting platform (4) in the vertical direction near the inner edge. When the lifting platform (4) descends to the bottom, it presses down the edge of the pedal platform (5) to drive the pedal platform (5) downward. At this time, the pedal platform (5) compresses the gas pressure rod (6).

6. The lifting scooter according to claim 1, characterized in that: A battery pack and a hydraulic station are also provided on the mobile chassis (1). The hydraulic station provides hydraulic power for the hydraulic cylinder (3), and the battery pack provides power for the drive motor (17).

7. The lifting scooter according to claim 5, characterized in that: A support of a scissor-fork structure is provided below the pedal platform (5).

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