Pneumatic cross arm type motorcycle frame lifting device

Abstract

The invention discloses a pneumatic cross arm type motorcycle frame lifting device, and relates to the technical field of lifters, the pneumatic cross arm type motorcycle frame lifting device comprises a base, a supporting table is arranged at the top of the base, fixing rods are fixedly connected to the opposite sides of two moving blocks, and parking front baffles are fixedly connected to the front sides of the two fixing rods; supporting crank arms are rotatably connected to the outer sides of the rotating plates, swing rods are hinged to the front sides of the interiors of the supporting crank arms, protective frames are fixedly connected to the front sides of the swing rods, protective plates are fixedly connected to the front ends of the supporting crank arms, fixing frames are arranged at the bottom of the supporting table, and first arc side plates are fixedly connected to the top ends of first arc toothed plates. According to the pneumatic cross arm type motorcycle frame lifting device, the stability of the frame in the lifting process is improved, the pneumatic cross arm type motorcycle frame lifting device is adaptive to the shapes of frames of motorcycles of different models, the frames are limited, the frames are prevented from deviating towards the two sides, and the frames are protected.

Description

Technical Field

[0001] The invention relates to the technical field of lifters, in particular to a pneumatic cross-arm type motorcycle frame lifting device. Background Art

[0002] With the rapid increase in the use of motorcycles, society has higher and higher performance requirements for motorcycle maintenance tools and equipment. Motorcycle maintenance is becoming more and more formalized, and various professional maintenance tools are constantly emerging, especially motorcycle maintenance workbenches. Since motorcycle maintenance lifting platforms have multiple functions such as lifting and hoisting, they can bring a lot of convenience to maintenance work.

[0003] The utility model patent with authorization announcement number CN222498537U discloses a motorcycle lift with a protective structure, including a supporting shell and a folding frame, a movable frame is slidably connected to the outside of the supporting shell, a fixed frame is overlapped on the supporting shell, limiting holes are provided on the front and back of the fixed frame, a rubber block is connected to the fixed frame, and a fixed tube is connected inside the fixed frame.

[0004] The above solution has problems such as poor adaptability and insufficient stability when used, and it is difficult to meet the support requirements of different models of motorcycles. It is impossible to effectively limit and support the front fenders, engine and both sides of the frame at the same time, and there is a lack of buffer mechanism during the lifting process, which can easily cause damage to the frame or tires due to impact force, increasing the complexity of maintenance operations and safety hazards. Summary of the invention

[0005] The object of the present invention is to provide a pneumatic cross-arm motorcycle frame lifting device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: A pneumatic cross-arm type motorcycle frame lifting device, including a base, a support platform is arranged on the top of the base, a moving rail is arranged on the top of the support platform, both sides inside the moving rail are slidably connected with moving blocks, fixed rods are fixedly connected to the opposite sides of the two moving blocks, front baffle plates before parking are fixedly connected to the front sides of the two fixed rods, the two front baffle plates before parking are arranged oppositely, support arms are fixedly connected to the opposite sides of the two fixed rods, a rotating sleeve is rotatably connected inside the support arm, a first threaded rod is slidably connected inside the rotating sleeve, a rotating plate is fixedly connected to the front end of the first threaded rod, a support curved arm is rotatably connected to the outside of the rotating plate, a coupling is fixedly connected to the end of the rotating plate located inside the support curved arm, a second threaded rod is fixedly connected to the front end of the coupling, a slider is slidably connected inside the support curved arm, the second threaded rod passes through the slider and is threadedly connected with the slider, a push rod is hinged to the front end of the slider, a swing rod is hinged to the front side inside the support curved arm, the front end of the push rod is hinged to the top end of the swing rod, a protective frame is fixedly connected to the front side of the swing rod, a protective plate is fixedly connected to the front end of the support curved arm, a fixed frame is arranged at the bottom of the support platform, a first arc-shaped toothed plate and a second arc-shaped toothed plate are respectively slidably connected to both sides inside the fixed frame, a first arc-shaped side plate is fixedly connected to the top end of the first arc-shaped toothed plate, and a second arc-shaped side plate is fixedly connected to the top end of the second arc-shaped toothed plate.

[0007] Preferably, a first motor is fixedly connected to the rear end of the support arm, the output end of the first motor is fixedly connected to the rear end of the rotating sleeve, a threaded sleeve is fixedly connected to the front end of the support arm, the first threaded rod passes through the threaded sleeve and is threadedly connected with the threaded sleeve, limiting grooves are formed on both sides of the first threaded rod, limiting plates are integrally formed on both sides inside the rotating sleeve, and the two limiting plates are respectively slidably connected inside the two limiting grooves and are adapted to the two limiting grooves. The first threaded rod is driven to rotate synchronously with the rotating sleeve by limiting the limiting grooves with the limiting plates.

[0008] Preferably, a sliding sleeve is fixedly connected to the bottom of the support arm, a sliding rod is slidably connected inside the sliding sleeve, a connecting block is fixedly connected to the front end of the sliding rod, and the connecting block is fixedly connected to the rear end of the bottom of the support curved arm. Cover plates are fixedly connected to the tops of the two support curved arms to limit the support curved arms and improve the stability of the support curved arms during movement.

[0009] Preferably, a bidirectional lead screw is rotatably connected inside the moving rail. The thread directions at both ends of the bidirectional lead screw are opposite. Two moving blocks are respectively threadedly connected to the outer sides of both ends of the bidirectional lead screw. One end of the moving rail is fixedly connected to a second motor. The output end of the second motor penetrates through the moving rail and is rotatably connected to the moving rail. The output end of the second motor is fixedly connected to the bidirectional lead screw. The front side of the moving rail is fixedly connected to a bottom plate. The bottom plate is arranged at the bottom of the front parking baffle and is adapted to the shape of the front parking baffle. The front parking baffle is supported by the bottom plate to improve the stability and support effect of the front parking baffle and prevent the front parking baffle from being deformed by the impact of the motorcycle tire.

[0010] Preferably, a cross arm is installed on the top of the base. One end of the top of the cross arm is hinged to the base. The other end of the top of the cross arm is slidably connected to the base. One end of the bottom of the cross arm is hinged to the base. The other end of the bottom of the cross arm is slidably connected to the base. A lifting cylinder is hinged to the top of the base. The output end of the lifting cylinder is hinged to one side of the cross arm, which is beneficial to lifting the support platform.

[0011] Preferably, four lifting cylinders are fixedly connected to the bottom of the support platform. The output ends of the lifting cylinders are fixedly connected to L-shaped plates. The four L-shaped plates are respectively fixedly connected to the two sides of the bottom of the fixing frame. Both ends of the fixing frame penetrate through the support platform and are slidably connected to the support platform. By starting the lifting cylinders, the fixing frame is driven to rise and extend upward from the inside of the support platform to support both sides of the motorcycle shell.

[0012] Preferably, a plurality of vertical plates are fixedly connected to the top of the fixing frame. The top ends of the vertical plates are fixedly connected to a frame support plate. Both the first arc-shaped side plate and the second arc-shaped side plate penetrate through the frame support plate and are slidably connected to the frame support plate, so that the fixing frame drives the frame support plate to lift synchronously to support the bottom of the frame.

[0013] Preferably, fixing plates are fixedly connected to both ends of the bottom of the frame support plate. Two rotating shafts are rotatably connected between the two fixing plates. A first guiding gear and a second guiding gear are respectively fixedly connected to the two rotating shafts. The first guiding gear is meshed with a first arc-shaped tooth plate. The second guiding gear is meshed with a second arc-shaped tooth plate. The second arc-shaped tooth plate is arranged in a staggered manner with the first arc-shaped tooth plate. One ends of the two rotating shafts are respectively fixedly connected to transmission gears. The two transmission gears are meshed with each other. One end of the fixing frame is hinged to a guiding cylinder. The output end of the guiding cylinder is fixedly connected to a hinge block. The hinge block is hinged to one side of the first arc-shaped tooth plate. By starting the guiding cylinder, the first arc-shaped tooth plate is pushed to slide inside the fixing frame, and the first arc-shaped tooth plate and the second arc-shaped tooth plate slide upward inside the frame support plate and extend out of the frame support plate synchronously, so as to support both sides of the frame.

[0014] Preferably, a parking tailgate is provided on the rear side of the frame support plate, a through groove is provided inside the base, one end of the parking tailgate is hinged inside the through groove, a push rod is fixedly connected to the rear side of the fixing frame, a piston cylinder is hinged on the top end of the push rod, a piston plate is slidably connected inside the piston cylinder, a round rod is fixedly connected to the top of the piston plate, the round rod passes through the top wall of the piston cylinder and is slidably connected to the piston cylinder, a push block is fixedly connected to the top end of the round rod, the push block is hinged to the bottom of the parking tailgate, a plurality of through holes are provided in an annular array inside the piston plate, a buffer solution is poured inside the piston cylinder, a spring is also provided on the outside of the round rod, both ends of the spring are respectively fitted with the piston cylinder and the push block, so that the parking tailgate is deflected upward, blocking the rear side of the front wheel to prevent wheel displacement.

[0015] Preferably, transverse grooves are provided on both sides inside the base, guide screws are rotatably connected inside the two transverse grooves, adjustment blocks are slidably connected inside the two transverse grooves of the base, two third motors are fixedly connected to the bottom of the base, and the output ends of the two third motors are respectively fixedly connected to the two guide screws, the two guide screws respectively pass through the two adjustment blocks and are threadedly connected to the two adjustment blocks, and the two adjustment blocks are respectively fixedly connected to the two sides of the bottom of the movable rail, driving the movable rail to move horizontally above the support platform.

[0016] Compared with the prior art, the present invention has the following beneficial effects: When the first and second handlebars are in a state of rotation and the first and second handlebars are in a state of rotation, the first and second handlebars are in a state of rotation and the first and second handlebars are in a state of rotation.

[0017] 2. The present application causes the first arc-shaped tooth plate and the second arc-shaped tooth plate to move in opposite directions, and the first arc-shaped tooth plate and the second arc-shaped tooth plate respectively drive the first arc-shaped side plate and the second arc-shaped side plate to move, and the first arc-shaped side plate and the second arc-shaped side plate extend from the inside of the frame support plate, thereby moving the first arc-shaped side plate and the second arc-shaped side plate to both sides of the frame, limiting the frame to prevent the frame from shifting to both sides, improving the stability of the frame during lifting and lowering, and protecting the frame.

[0018] 3. In this application, the parking rear baffle is lifted to contact the rear side of the front wheel, so that the parking rear baffle limits the front wheel of the motorcycle to prevent the vehicle from moving backward. At the same time, if the piston cylinder continues to move after the parking rear baffle contacts the wheel, the piston plate will slide inside the piston cylinder, and the buffer liquid inside the piston cylinder will pass through multiple through holes inside the piston plate to form a damping effect. Combining with the elastic force of the spring, it buffers the parking rear baffle, keeps the parking rear baffle in contact with the wheel, adapts to different tires, and can absorb part of the power when receiving the impact force of the wheel, improving safety. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the cross arm of the present invention; Figure 3 It is a schematic diagram of the bottom structure of the support platform of the present invention; Figure 4 It is a schematic diagram of the extended structure of the frame support plate of the present invention; Figure 5 It is a schematic diagram of the structure of the parking front baffle of the present invention; Figure 6 It is a schematic diagram of the structure of the fixing rod of the present invention; Figure 7 It is a schematic diagram of the structure of the rotating sleeve of the present invention; Figure 8 It is a schematic diagram of the structure of the support curved arm of the present invention; Figure 9 It is a schematic diagram of the structure of the swing rod of the present invention; Figure 10 It is a schematic diagram of the structure of the frame support plate of the present invention; Figure 11 It is a schematic diagram of the structure of the fixing bracket of the present invention; Figure 12 It is a schematic diagram of the structure of the arc-shaped toothed plate of the present invention; Figure 13 It is a schematic diagram of the structure of the rotating shaft of the present invention; Figure 14 It is a schematic diagram of the structure of the parking rear baffle of the present invention; Figure 15 It is a schematic diagram of the structure of the piston plate of the present invention.

[0020] Reference numerals in the figure: 1, base; 2, support platform; 3, moving track; 4, moving block; 5, fixed rod; 6, front parking baffle; 7, support arm; 8, rotating sleeve; 9, first threaded rod; 10, threaded sleeve; 11, support curved arm; 12, protective plate; 13, rotating plate; 14, slider; 15, coupling; 16, second threaded rod; 17, push rod; 18, swing rod; 19, protective frame; 20, connecting block; 21, sliding rod; 22, sliding sleeve; 23, cover plate; 24, limiting plate; 25, limiting groove; 26, first motor; 27, fixed frame; 28, vertical plate; 29, frame support plate; 30, first arc-shaped side plate; 31, first arc-shaped toothed plate; 32, second arc-shaped side plate; 33, second arc-shaped toothed plate; 34, fixing plate; 35, rotating shaft; 36, first guiding gear; 37, second guiding gear; 38, driving gear; 39, guiding cylinder; 40, hinge block; 41, L-shaped plate; 42, lifting cylinder; 43, ejector rod; 44, piston cylinder; 45, rear parking baffle; 46, piston plate; 47, round rod; 48, push block; 49, spring; 50, bidirectional lead screw; 51, second motor; 52, bottom plate; 53, guiding lead screw; 54, adjusting block; 55, third motor; 56, cross arm; 57, lifting cylinder. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment: As Figures 1 - 15 shown, the present invention provides a technical solution for a pneumatic cross-arm type motorcycle frame lifting device, including a base 1, a support platform 2 is arranged on the top of the base 1, a cross arm 56 is installed on the top of the base 1, one end of the top of the cross arm 56 is hinged to the base 1, the other end of the top of the cross arm 56 is slidably connected to the base 1, one end of the bottom of the cross arm 56 is hinged to the base 1, the other end of the bottom of the cross arm 56 is slidably connected to the base 1, a lifting cylinder 57 is hinged to the top of the base 1, and the output end of the lifting cylinder 57 is hinged to one side of the cross arm 56, which is beneficial to lift the support platform 2. Horizontal grooves are opened on both sides inside the base 1, guiding lead screws 53 are rotatably connected inside the two horizontal grooves, adjusting blocks 54 are slidably connected inside the two horizontal grooves of the base 1, two third motors 55 are fixedly connected to the bottom of the base 1, the output ends of the two third motors 55 are respectively fixedly connected to the two guiding lead screws 53, the two guiding lead screws 53 respectively penetrate through the two adjusting blocks 54 and are threadedly connected to the two adjusting blocks 54, and the two adjusting blocks 54 are respectively fixedly connected to both sides of the bottom of the moving track 3, driving the moving track 3 to perform horizontal movement above the support platform 2.

[0023] A moving rail 3 is provided at the top of the support platform 2. Both sides inside the moving rail 3 are slidably connected with moving blocks 4. Fixed rods 5 are fixedly connected to the opposite sides of the two moving blocks 4. Front baffle plates 6 for parking are fixedly connected to the front sides of the two fixed rods 5. The two front baffle plates 6 for parking are arranged oppositely. Support arms 7 are fixedly connected to the opposite sides of the two fixed rods 5. A rotating sleeve 8 is rotatably connected inside the support arm 7. A first threaded rod 9 is slidably connected inside the rotating sleeve 8. A first motor 26 is fixedly connected to the rear end of the support arm 7. The output end of the first motor 26 is fixedly connected to the rear end of the rotating sleeve 8. A threaded sleeve 10 is fixedly connected to the front end of the support arm 7. The first threaded rod 9 penetrates through the threaded sleeve 10 and is threadedly connected with the threaded sleeve 10. Limiting grooves 25 are formed on both sides of the first threaded rod 9. Limiting plates 24 are integrally formed on both sides inside the rotating sleeve 8. The two limiting plates 24 are respectively slidably connected inside the two limiting grooves 25 and are adapted to the two limiting grooves 25. The limiting plate 24 limits the limiting groove 25, and thereby drives the first threaded rod 9 to rotate synchronously with the rotating sleeve 8. A rotating plate 13 is fixedly connected to the front end of the first threaded rod 9. A support curved arm 11 is rotatably connected to the outside of the rotating plate 13. A coupling 15 is fixedly connected to the end of the rotating plate 13 located inside the support curved arm 11. A second threaded rod 16 is fixedly connected to the front end of the coupling 15. A slider 14 is slidably connected inside the support curved arm 11. The second threaded rod 16 penetrates through the slider 14 and is threadedly connected with the slider 14. A push rod 17 is hinged to the front end of the slider 14. A swing rod 18 is hinged to the front side inside the support curved arm 11. The front end of the push rod 17 is hinged to the top end of the swing rod 18. A protective frame 19 is fixedly connected to the front side of the swing rod 18. A protective plate 12 is fixedly connected to the front end of the support curved arm 11. A sliding sleeve 22 is fixedly connected to the bottom of the support arm 7. A sliding rod 21 is slidably connected inside the sliding sleeve 22. A connecting block 20 is fixedly connected to the front end of the sliding rod 21. The connecting block 20 is fixedly connected to the bottom rear end of the support curved arm 11. Cover plates 23 are fixedly connected to the tops of the two support curved arms 11 to limit the support curved arms 11 and improve the stability of the support curved arms 11 during movement.

[0024] A bidirectional lead screw 50 is rotatably connected inside the moving rail 3. The thread directions at both ends of the bidirectional lead screw 50 are opposite. The two moving blocks 4 are respectively threadedly connected to the outer sides of both ends of the bidirectional lead screw 50. A second motor 51 is fixedly connected to one end of the moving rail 3. The output end of the second motor 51 penetrates through the moving rail 3 and is rotatably connected with the moving rail 3. The output end of the second motor 51 is fixedly connected to the bidirectional lead screw 50. A bottom plate 52 is fixedly connected to the front side of the moving rail 3. The bottom plate 52 is arranged at the bottom of the front baffle plate 6 for parking and is adapted to the shape of the front baffle plate 6 for parking. The front baffle plate 6 for parking is supported by the bottom plate 52 to improve the stability and support effect of the front baffle plate 6 for parking and prevent the front baffle plate 6 for parking from being deformed by the impact of the motorcycle tire.

[0025] A fixing frame 27 is provided at the bottom of the supporting platform 2. The two sides inside the fixing frame 27 are respectively connected with a first arc-shaped tooth plate 31 and a second arc-shaped tooth plate 33 in a sliding manner. The top end of the first arc-shaped tooth plate 31 is fixedly connected with a first arc-shaped side plate 30, and the top end of the second arc-shaped tooth plate 33 is fixedly connected with a second arc-shaped side plate 32. Four lifting cylinders 42 are fixedly connected to the bottom of the supporting platform 2. The output ends of the lifting cylinders 42 are fixedly connected with L-shaped plates 41. The four L-shaped plates 41 are respectively fixedly connected to the two sides at the bottom of the fixing frame 27. Both ends of the fixing frame 27 penetrate through the supporting platform 2 and are slidably connected with the supporting platform 2. By starting the lifting cylinders 42, the fixing frame 27 is driven to rise and extend upward from inside the supporting platform 2 to support both sides of the motorcycle shell. A plurality of vertical plates 28 are fixedly connected to the top of the fixing frame 27, and the top ends of the vertical plates 28 are fixedly connected with a frame support plate 29. Both the first arc-shaped side plate 30 and the second arc-shaped side plate 32 penetrate through the frame support plate 29 and are slidably connected with the frame support plate 29, so that the fixing frame 27 drives the frame support plate 29 to lift synchronously to support the bottom of the frame. Fixed plates 34 are fixedly connected to both ends at the bottom of the frame support plate 29. Two rotating shafts 35 are rotatably connected between the two fixed plates 34. A first guiding gear 36 and a second guiding gear 37 are respectively fixedly connected to the two rotating shafts 35. The first guiding gear 36 is meshed and connected with the first arc-shaped tooth plate 31, and the second guiding gear 37 is meshed and connected with the second arc-shaped tooth plate 33. The second arc-shaped tooth plate 33 is arranged in a staggered manner with the first arc-shaped tooth plate 31. Transmission gears 38 are fixedly connected to one ends of the two rotating shafts 35. The two transmission gears 38 are meshed and connected. One end of the fixing frame 27 is hinged with a guiding cylinder 39. The output end of the guiding cylinder 39 is fixedly connected with a hinge block 40. The hinge block 40 is hinged to one side of the first arc-shaped tooth plate 31. By starting the guiding cylinder 39, the first arc-shaped tooth plate 31 is pushed to slide inside the fixing frame 27, and the first arc-shaped tooth plate 31 and the second arc-shaped tooth plate 33 slide upward inside the frame support plate 29 and extend out from inside the frame support plate 29 to support both sides of the frame.

[0026] A parking rear baffle 45 is arranged at the rear side of the frame support plate 29. A through groove is opened inside the base 1. One end of the parking rear baffle 45 is hinged inside the through groove. A top rod 43 is fixedly connected to the rear side of the fixing frame 27. A piston cylinder 44 is hinged to the top end of the top rod 43. A piston plate 46 is slidably connected inside the piston cylinder 44. A round rod 47 is fixedly connected to the top of the piston plate 46. The round rod 47 penetrates through the top wall of the piston cylinder 44 and is slidably connected with the piston cylinder 44. A push block 48 is fixedly connected to the top end of the round rod 47. The push block 48 is hinged to the bottom of the parking rear baffle 45. A plurality of through holes are arranged in an annular array inside the piston plate 46. A buffer liquid is filled inside the piston cylinder 44. A spring 49 is also arranged outside the round rod 47. Both ends of the spring 49 are respectively in contact with the piston cylinder 44 and the push block 48, so that the parking rear baffle 45 deflects upward to block the rear side of the front wheel and prevent the wheel from displacing.

[0027] When the present invention is in use, the base 1 can be buried in the ground to lower the overall height, push the motorcycle to the top of the support platform 2, and make the front wheel close to the moving rail 3. By adjusting the front and rear positions of the moving rail 3, different frames can be adapted. The second motor 51 is started to drive the bidirectional screw rod 50 to rotate, and the bidirectional screw rod 50 drives the two moving blocks 4 to move relative to each other, so that the two moving blocks 4 drive the two fixed rods 5 and the parking front baffle 6 to move relative to each other, so that the two parking front baffles 6 clamp the front wheel inside, so as to position and support the front wheel, prevent the vehicle from deviating and tilting, improve stability, and facilitate maintenance. The first motor 26 is started to drive the rotating sleeve 8 to rotate, and the limiting plate 24 inside the rotating sleeve 8 limits the limiting groove 25, so as to drive the first threaded rod 9 to rotate synchronously with the rotating sleeve 8. Because the first threaded rod 9 is threadedly connected to the threaded sleeve 10, the first threaded rod 9 moves under the limit of the threaded sleeve 10 when rotating, so that the first threaded rod 9 The first threaded rod 9 drives the supporting crank arm 11 to move forward, and the supporting crank arm 11 drives the protective plate 12 to move, so that the bent part of the supporting crank arm 11 is close to the front baffle rib of the frame. At the same time, the first threaded rod 9 drives the rotating plate 13 and the coupling 15 to rotate when rotating, and the coupling 15 drives the second threaded rod 16 to rotate when rotating. When the second threaded rod 16 rotates, it drives the slider 14 to slide forward inside the supporting crank arm 11. The slider 14 pushes the push rod 17 to move when moving, and the push rod 17 and the swing rod 18 hinge point pushes the swing rod 18 to deflect forward, so that the swing rod 18 drives the protective frame 19 to deflect and fit the front baffle rib of the frame, and the front baffle rib of the frame is limited, so as to improve the stability of the frame and adapt to the frame shape of different models of motorcycles. When the supporting crank arm 11 moves, it drives the protective plate 12 to move, so that the protective plate 12 is close to the engine position of the motorcycle for support. The protective plate 12 is fixed to the supporting crank arm 11 by bolts, and the protective plate 12 of the corresponding shape can be replaced according to the model of the motorcycle.

[0028] It is started by lifting cylinder 42, which drives L-shaped plate 41 to rise, and L-shaped plate 41 drives fixed frame 27 to rise. At the same time, fixed frame 27 drives vertical plate 28 and vehicle frame support plate 29 to rise, so that vehicle frame support plate 29 extends upward from inside support table 2 and contacts the bottom of the vehicle frame to support the vehicle frame. At the same time, guiding cylinder 39 is started, and the output end of guiding cylinder 39 pushes first arc-shaped toothed plate 31 to slide, so that first arc-shaped toothed plate 31 moves inside fixed frame 27. When first arc-shaped toothed plate 31 moves, it drives second guiding gear 37 to rotate. The rotation of second guiding gear 37 drives rotating shaft 35 to rotate, and through the transmission of transmission gear 38, two rotating shafts 35 rotate in opposite directions, thereby driving first guiding gear 36 to rotate and driving second arc-shaped toothed plate 33 to move, so that first arc-shaped toothed plate 31 and second arc-shaped toothed plate 33 move in opposite directions. First arc-shaped toothed plate 31 and second arc-shaped toothed plate 33 drive first arc-shaped side plate 30 and second arc-shaped side plate 32 to move respectively. First arc-shaped side plate 30 and second arc-shaped side plate 32 extend out from inside vehicle frame support plate 29, so that first arc-shaped side plate 30 and second arc-shaped side plate 32 move to both sides of the vehicle frame to limit the vehicle frame and prevent the vehicle frame from shifting to both sides, improving the stability of the vehicle frame during lifting and protecting the vehicle frame.

[0029] When fixed frame 27 moves upward, it drives ejector rod 43 to rise. Ejector rod 43 drives piston cylinder 44 to rise, and piston cylinder 44 drives spring 49 to rise. Thus, spring 49 pushes push block 48 and parking rear baffle 45 to deflect upward, so that parking rear baffle 45 is lifted to contact the rear side of the front wheel, and parking rear baffle 45 limits the front wheel of the motorcycle to prevent the vehicle from moving backward. At the same time, if piston cylinder 44 continues to move after parking rear baffle 45 contacts the wheel, piston plate 46 will slide inside piston cylinder 44, and the buffer liquid inside piston cylinder 44 will pass through multiple through holes inside piston plate 46 to form a damping effect, cooperating with the elastic force of spring 49 to buffer parking rear baffle 45, so that parking rear baffle 45 keeps fitting with the wheel, adapts to different tires, and can absorb part of the power when receiving the impact force of the wheel, improving safety.

[0030] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A pneumatic cross-arm type motorcycle frame lifting device, characterized in that: It includes a base (1), a support platform (2) is arranged on the top of the base (1), a moving rail (3) is arranged on the top of the support platform (2), both sides inside the moving rail (3) are slidably connected with moving blocks (4), fixing rods (5) are fixedly connected to the opposite sides of the two moving blocks (4), front baffle plates for parking (6) are fixedly connected to the front sides of the two fixing rods (5), the two front baffle plates for parking (6) are arranged oppositely, support arms (7) are fixedly connected to the opposite sides of the two fixing rods (5), a rotating sleeve (8) is rotatably connected inside the support arm (7), a first threaded rod (9) is slidably connected inside the rotating sleeve (8), a rotating plate (13) is fixedly connected to the front end of the first threaded rod (9), a support curved arm (11) is rotatably connected to the outside of the rotating plate (13), a coupling (15) is fixedly connected to the end of the rotating plate (13) located inside the support curved arm (11), a second threaded rod (16) is fixedly connected to the front end of the coupling (15), a slider (14) is slidably connected inside the support curved arm (11), the second threaded rod (16) penetrates through the slider (14) and is threadedly connected with the slider (14), a push rod (17) is hinged to the front end of the slider (14), a swing rod (18) is hinged to the front side inside the support curved arm (11), the front end of the push rod (17) is hinged to the top end of the swing rod (18), a protective frame (19) is fixedly connected to the front side of the swing rod (18), a protective plate (12) is fixedly connected to the front end of the support curved arm (11), a fixing frame (27) is arranged at the bottom of the support platform (2), a first arc-shaped tooth plate (31) and a second arc-shaped tooth plate (33) are respectively slidably connected to both sides inside the fixing frame (27), a first arc-shaped side plate (30) is fixedly connected to the top end of the first arc-shaped tooth plate (31), and a second arc-shaped side plate (32) is fixedly connected to the top end of the second arc-shaped tooth plate (33).

2. The pneumatic cross-arm type motorcycle frame lifting device according to claim 1, characterized in that: A first motor (26) is fixedly connected to the rear end of the support arm (7), the output end of the first motor (26) is fixedly connected to the rear end of the rotating sleeve (8), a threaded sleeve (10) is fixedly connected to the front end of the support arm (7), the first threaded rod (9) penetrates through the threaded sleeve (10) and is threadedly connected with the threaded sleeve (10), limiting grooves (25) are formed on both sides of the first threaded rod (9), limiting plates (24) are integrally formed on both sides inside the rotating sleeve (8), and the two limiting plates (24) are respectively slidably connected inside the two limiting grooves (25) and are adapted to the two limiting grooves (25).

3. The pneumatic cross-arm type motorcycle frame lifting device according to claim 1, characterized in that: A sliding sleeve (22) is fixedly connected to the bottom of the support arm (7), a sliding rod (21) is slidably connected inside the sliding sleeve (22), a connecting block (20) is fixedly connected to the front end of the sliding rod (21), the connecting block (20) is fixedly connected to the rear end of the bottom of the support curved arm (11), and cover plates (23) are fixedly connected to the tops of the two support curved arms (11).

4. A pneumatic cross-arm type motorcycle frame lifting device according to claim 1, characterized in that: A bidirectional lead screw (50) is rotatably connected inside the moving rail (3). The thread directions at both ends of the bidirectional lead screw (50) are opposite. Two moving blocks (4) are respectively threadedly connected to the outer sides of both ends of the bidirectional lead screw (50). One end of the moving rail (3) is fixedly connected to a second motor (51). The output end of the second motor (51) penetrates the moving rail (3) and is rotatably connected to the moving rail (3). The output end of the second motor (51) is fixedly connected to the bidirectional lead screw (50). A bottom plate (52) is fixedly connected to the front side of the moving rail (3). The bottom plate (52) is arranged at the bottom of the parking front baffle (6) and is adapted to the shape of the parking front baffle (6).

5. The pneumatic cross-arm type motorcycle frame lifting device according to claim 1, characterized in that: A cross arm (56) is installed on the top of the base (1). One end of the top of the cross arm (56) is hinged to the base (1). The other end of the top of the cross arm (56) is slidably connected to the base (1). One end of the bottom of the cross arm (56) is hinged to the base (1). The other end of the bottom of the cross arm (56) is slidably connected to the base (1). A lifting cylinder (57) is hinged to the top of the base (1). The output end of the lifting cylinder (57) is hinged to one side of the cross arm (56).

6. The pneumatic cross-arm type motorcycle frame lifting device according to claim 1, characterized in that: Four lifting cylinders (42) are fixedly connected to the bottom of the support platform (2). The output ends of the lifting cylinders (42) are fixedly connected to L-shaped plates (41). The four L-shaped plates (41) are respectively fixedly connected to both sides of the bottom of the fixing frame (27). Both ends of the fixing frame (27) penetrate the support platform (2) and are slidably connected to the support platform (2).

7. A pneumatic cross-arm type motorcycle frame lifting device according to claim 1, characterized in that: A plurality of vertical plates (28) are fixedly connected to the top of the fixing frame (27). The top ends of the vertical plates (28) are fixedly connected to a vehicle frame support plate (29). The first arc-shaped side plate (30) and the second arc-shaped side plate (32) both penetrate the vehicle frame support plate (29) and are slidably connected to the vehicle frame support plate (29).

8. The pneumatic cross-arm type motorcycle frame lifting device according to claim 7, wherein: Fixing plates (34) are fixedly connected to both ends of the bottom of the vehicle frame support plate (29). Two rotating shafts (35) are rotatably connected between the two fixing plates (34). A first guiding gear (36) and a second guiding gear (37) are respectively fixedly connected to the two rotating shafts (35). The first guiding gear (36) is meshed and connected with a first arc-shaped toothed plate (31). The second guiding gear (37) is meshed and connected with a second arc-shaped toothed plate (33). The second arc-shaped toothed plate (33) is arranged in a staggered manner with the first arc-shaped toothed plate (31). One ends of the two rotating shafts (35) are both fixedly connected to transmission gears (38). The two transmission gears (38) are meshed and connected. One end of the fixing frame (27) is hinged to a guiding cylinder (39). The output end of the guiding cylinder (39) is fixedly connected to a hinge block (40). The hinge block (40) is hinged to one side of the first arc-shaped toothed plate (31).

9. The pneumatic cross-arm type motorcycle frame lifting device according to claim 7, wherein: A parking rear baffle (45) is arranged at the rear side of the frame support plate (29). A through groove is formed inside the base (1). One end of the parking rear baffle (45) is hinged inside the through groove. A top rod (43) is fixedly connected to the rear side of the fixed frame (27). The top end of the top rod (43) is hinged to a piston cylinder (44). A piston plate (46) is slidably connected inside the piston cylinder (44). A round rod (47) is fixedly connected to the top of the piston plate (46). The round rod (47) penetrates through the top wall of the piston cylinder (44) and is slidably connected to the piston cylinder (44). A push block (48) is fixedly connected to the top end of the round rod (47). The push block (48) is hinged to the bottom of the parking rear baffle (45). A plurality of through holes are formed in the piston plate (46) in an annular array. A buffer liquid is filled inside the piston cylinder (44). A spring (49) is also arranged on the outer side of the round rod (47). Two ends of the spring (49) are respectively in contact with the piston cylinder (44) and the push block (48).

10. The pneumatic cross-arm type motorcycle frame lifting device according to claim 1, wherein: Transverse grooves are formed on both sides inside the base (1). Guide lead screws (53) are rotatably connected inside the two transverse grooves. Adjusting blocks (54) are slidably connected inside the two transverse grooves of the base (1). Two third motors (55) are fixedly connected to the bottom of the base (1). Output ends of the two third motors (55) are respectively fixedly connected to the two guide lead screws (53). The two guide lead screws (53) respectively penetrate through the two adjusting blocks (54) and are threadedly connected to the two adjusting blocks (54). The two adjusting blocks (54) are respectively fixedly connected to both sides of the bottom of the moving rail (3).

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