Bicycle maintenance elevator

Abstract

A bicycle maintenance lifter comprises a bottom frame and an operation table, a lifting air cylinder is arranged between the bottom frame and the operation table, a main supporting frame, a supporting frame connecting rod and a front fork fixing assembly used for clamping a front fork are rotationally arranged on one side of the operation table, and the front fork fixing assembly comprises a pointed column top head and a cylindrical top head. A middle-position supporting column and an auxiliary-position supporting column are rotationally connected to the operation table, contact brackets are movably connected to the middle-position supporting column and the auxiliary-position supporting column correspondingly, and buckling hooks used for clamping a hub are arranged on the supporting frame connecting rod and the auxiliary-position supporting column correspondingly. The main supporting frame is movably connected with a hub limiting jacking piece used for maintaining and fixing a hub. According to the utility model, bicycles in various forms can be erected and fixed in the checking and dismounting process, stable lifting of the operation position can be adjusted, various maintenance requirements are met, maintenance personnel can conveniently carry out maintenance work at the most suitable operation position, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle maintenance, in particular to a bicycle maintenance lift. Background Art

[0002] Bicycles can be used as an environmentally friendly means of transportation for travel and travel. More and more people use bicycles as fitness equipment for riding and traveling. After a long period of use, some parts of a bicycle will inevitably be damaged. In order to facilitate maintenance, maintenance personnel need to hang the bicycle up to a position suitable for their own operation. A bicycle maintenance lift is a structure that lifts and supports the bicycle during maintenance, allowing maintenance technicians to repair the bicycle more conveniently.

[0003] The existing Chinese patent is named a bicycle repair stand with a lifting function, and the patent number is CN209774578U, which includes a support rod, a lifting tube, a wing bolt, a lifting rod, a first connecting rod, a supporting hanging rod, a rotatable and adjustable hanging rod structure, a rotatable plug-in fixed tube structure, a movable fixed adsorption seat structure, a second connecting rod, a steering tube, a lighting switch, a lamp holder, a lamp bead and a lampshade. The upper end of the support rod is plugged into the middle position inside the lower end of the lifting tube; the wing bolt is threadedly connected to the middle position of the lower part of the front surface of the lifting tube; the lifting rod is respectively welded to the upper positions of the left and right sides of the lifting tube; the lower end of the first connecting rod is welded to the middle position of the upper end of the lifting tube; the upper end of the first connecting rod is welded to the middle position of the lower end of the supporting hanging rod; the rotatable and adjustable hanging rod structure is respectively installed on the outer walls of the left and right sides of the supporting hanging rod. The arrangement of the support rod, lifting tube, wing bolt and lifting rod in the above patent is conducive to adjusting the lifting tube and facilitating the lifting and lowering of the maintenance frame. The arrangement of the arc-shaped hanging rod, connecting plate and anti-drop rod is conducive to preventing the bicycle from falling off during the maintenance process and affecting the maintenance work.

[0004] Although the above existing patent can realize the lifting and lowering of the maintenance rack and prevent the bicycle from falling off during the maintenance process through the arc-shaped hanging rod, the bicycle structure is complicated. During the maintenance and inspection, various parts such as the front and rear tires or flywheels need to be disassembled, and different positions of the bicycle need to be clamped and fixed. Only using the above arc-shaped hanging rod for erection cannot meet the maintenance needs. At the same time, the above patent only uses the support rod, lifting tube, wing bolt and lifting rod for lifting, and cannot ensure the stability of the bicycle during the maintenance process. Therefore, the utility model provides a bicycle maintenance lift. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the above-mentioned traditional technology and provide a bicycle maintenance lift, which can set up and fix bicycles of various forms in the process of inspection and disassembly during maintenance, and can also adjust the stable lifting of the operating position to meet various maintenance needs, so as to facilitate maintenance personnel to perform maintenance work in the operating position that best suits them, thereby improving maintenance efficiency.

[0006] The purpose of this utility model is achieved through the following technical measures:

[0007] The bicycle maintenance lift comprises a base frame and an operating table, a lifting cylinder is arranged between the base frame and the operating table, and a lifting hand brake for controlling the extension and retraction of the lifting cylinder is arranged on the side of the operating table, and a main support frame, a support frame connecting rod and a front fork fixing assembly for clamping a front fork are rotatably arranged on one side of the operating table, the main support frame is rotatably connected to the side of the operating table, the support frame connecting rod is rotatably connected to the main support frame, the front fork fixing assembly comprises a pointed column head and a cylindrical head, the pointed column head and the cylindrical head are both movably connected to the main support frame, a middle support column and a secondary support column are rotatably connected to the operating table, the middle support column and the secondary support column are both movably connected to a contact bracket, the support frame connecting rod and the secondary support column are both provided with a fastening hook for clamping a hub, and the main support frame is movably connected with a hub limiting top piece for fixing and repairing a wheel hub.

[0008] According to further specific optimization, the middle support column and the auxiliary support column are hollow and have telescopic columns slidably arranged therein, and each of the telescopic columns is movably connected to a contact bracket for supporting a bicycle on the end away from the operating table and the connecting rod of the articulated frame, and the middle support column and the auxiliary support column are both threadedly connected with a limit knob, and the limit knob can interfere with the telescopic column.

[0009] Further specific optimization is that a U-shaped limit rod is fixedly connected to the side wall of the median support column and a limit slot is formed between the median support column, and a median limit rod is rotatably connected to the operating table, and an angle limit button is rotatably connected to the end of the median limit rod away from the operating table, and the angle limit button is rotatably engaged and limited in the limit slot.

[0010] Further specific optimization is that a rotating sleeve is fixedly connected to the side wall of the main support frame, an L-shaped limit rod is movably connected inside the rotating sleeve, the hub limit top piece is threadedly connected to the end of the L-shaped limit rod away from the rotating sleeve, and a sleeve limit knob is penetrated through and threadedly connected to the side wall of the rotating sleeve.

[0011] Further specific optimization is that the main support frame and the telescopic column located in the auxiliary support column are both movably connected with a V-shaped handle, a pull rod limit rod is fixedly connected inside the V-shaped handle, a connecting rod is vertically movably penetrated through the pull rod limit rod, one end of the connecting rod is fixedly connected with a tightening knob, the tightening hook is fixedly connected to the end of the connecting rod away from the tightening knob, a tensioning spring is sleeved on the connecting rod, and the tensioning spring is arranged between the pull rod limit rod and the tightening knob.

[0012] Further specific optimization is that two symmetrically arranged X-shaped articulated support frames are movably connected between the base frame and the operating table, a hinge point connecting rod and a plurality of articulated frame connecting rods are connected between the two X-shaped articulated support frames, and the telescopic end of the lifting cylinder is vertically connected to the hinge point connecting rod.

[0013] Further specific optimization is that a pedal connecting rod is rotatably connected to the base frame, the pedal connecting rod passes through the base frame and rotates horizontally and one end is fixedly connected to a foot pedal, an auxiliary push rod is fixedly connected in parallel to the pedal connecting rod, one end of the X-shaped hinged support frame close to the base frame is rotatably connected to the edge of the base frame, the other end of the X-shaped hinged support frame close to the base frame is horizontally slidably connected to the base frame, and the auxiliary push rod abuts against one side of the X-shaped hinged support frame rotatably connected to the base frame.

[0014] According to further specific optimization, the front fork fixing assembly also includes two adjusting L-shaped screws, which are horizontally threadedly connected to the main support frame, and the adjacent ends of the two adjusting L-shaped screws are fixedly connected with a clamping joint, and the pointed column head and the cylindrical head are clamped in the corresponding clamping joint.

[0015] According to further specific optimization, buffer blocks are fixedly connected to the four corners of the base frame, and each buffer block is provided with a rubber pad, which can contact the lower surface of the operating table.

[0016] Further specific optimization is that a sloped board is hinged on the side of the operating table facing away from the main support frame, a handle frame is fixedly connected to the upper part of the operating table, the lifting handbrake is connected to the handle frame, and a rectangular square groove for hiding the middle support column and the auxiliary support column is opened on the operating table, and each side of the rectangular square groove is rotatably connected with a covering flap.

[0017] Due to the adoption of the above technical solution, compared with the prior art, the advantages of the utility model are:

[0018] 1. By squeezing the lifting handbrake, the telescopic end of the lifting cylinder is controlled to extend or retract, thereby pushing the X-shaped articulated support frame to prop up. At the same time, step on the pedal to drive the pedal connecting rod to rotate, thereby driving the auxiliary push rod to support the X-shaped articulated support frame and assisting the lifting cylinder to open the X-shaped articulated support frame to realize the lifting and lowering of the operating table, which is convenient for maintenance personnel to perform maintenance work in the most suitable operating position for themselves and improve maintenance efficiency.

[0019] 2. Clamp and position the front wheel through the cylindrical top and the pointed top, lift the front wheel with the main support frame, pull the middle support column out of the rectangular square groove, drag the contact bracket to the appropriate position and press it against the middle position of the bicycle, fix it with the limit knob, adjust the angle of the middle support column, and then screw the angle limit knob into the limit slot to fix the angle, thereby lifting the bicycle for easy maintenance.

[0020] 3. When the front and rear tires are removed and the frame needs to be repaired, rotate the support frame connecting rod to horizontally place it on the main support frame. The hub fastening assembly can be installed or removed on the auxiliary support column. After the hubs of the front and rear wheels are placed on the main support frame and the auxiliary support column, pull the V-shaped handle upward to drive the fastening hook to move, hook the hub with the fastening hook, and then pull the V-shaped handle downward to squeeze the tensioning spring through the pull rod limit rod, so that the fastening hook tightly hooks the hub, ensuring the stability of the bicycle frame when it is erected for maintenance and meeting various maintenance needs.

[0021] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0023] Figure 2 It is a side view of the main support frame of the embodiment of the utility model.

[0024] Figure 3 It is a structural schematic diagram of a hub fastening assembly of an embodiment of the utility model.

[0025] Figure 4 It is a schematic structural diagram of an X-shaped hinged support frame and an auxiliary push rod according to an embodiment of the utility model.

[0026] Figure 5 It is a structural schematic diagram of an operating table according to an embodiment of the utility model.

[0027] Figure 6 It is a schematic diagram of the structure of a clamping joint and a cylindrical head in an embodiment of the utility model.

[0028] Figure 7 It is a schematic diagram of the structure of a clamping joint and a pointed column head according to an embodiment of the utility model.

[0029] Markings in the figure: 1, chassis; 2, operating platform; 3, X-shaped articulated support frame; 4, lifting handbrake; 41, lifting cylinder; 5, main support frame; 6, support frame connecting rod; 7, middle position support column; 8, secondary position support column; 9, telescopic column; 10, contact bracket; 11, limit knob; 12, U-shaped limit rod; 13, middle position limit rod; 14, angle limit knob; 15, fastening knob; 16, V-shaped handle; 17, fastening hook; 18, connecting pull rod; 19, tension spring; 20, rotating sleeve; 21, L-shaped limit rod; 22, hub limit top piece; 23, sleeve limit knob; 24, pedal connecting rod; 25, foot pedal; 26, auxiliary ejector rod; 27, L-shaped screw rod; 28, clamping joint; 29, pointed column top piece; 30, cylindrical top piece; 31, articulated point connecting rod; 32, articulated frame connecting rod; 33, buffer block; 34, rubber cushion block; 35, ramp boarding; 36, handle frame; 37, covering flap. Detailed implementation mode

[0030] In order to clearly and completely describe the purpose, technical solution of the present utility model and make the advantages more clearly understood, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0031] In the description of the present utility model, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0034] Example:

[0035] A bicycle maintenance lift comprises a base frame 1 and an operating platform 2, a lifting cylinder 41 is arranged between the base frame 1 and the operating platform 2, a lifting handbrake 4 for controlling the extension and retraction of the lifting cylinder 41 is arranged on the side of the operating platform 2, a main support frame 5, a support frame connecting rod 6 and a front fork fixing assembly for clamping a front fork are rotatably arranged on one side of the operating platform 2, the main support frame 5 is rotatably connected to the side of the operating platform 2, the support frame connecting rod 6 is rotatably connected to the main support frame 5, the front fork fixing assembly comprises a pointed column head 29 and a cylindrical head 30, the pointed column head 29 and the cylindrical head 30 are both movably connected to the main support frame 5, a middle support column 7 and a secondary support column 8 are rotatably connected to the operating platform 2, a contact bracket 10 is movably connected to the middle support column 7 and the secondary support column 8, a fastening hook 17 for clamping a hub is arranged on the support frame connecting rod 6 and the secondary support column 8, and a hub limiting top piece 22 for hub repair and fixation is movably connected to the main support frame 5.

[0036] The middle support column 7 and the auxiliary support column 8 are hollow and slidably provided with telescopic columns 9. A contact bracket 10 for supporting a bicycle is movably connected to the end of each telescopic column 9 away from the operating table 2 and the articulated frame connecting rod 32. The middle support column 7 and the auxiliary support column 8 are both threadedly connected with a limit knob 11, which can conflict with the telescopic column 9. The telescopic column 9 is slidable in the middle support column 7 and the auxiliary support column 8 to adjust the height of each contact bracket 10, so that maintenance personnel can perform maintenance work at the most suitable operating position for themselves, thereby improving maintenance efficiency.

[0037] A U-shaped limiting rod 12 is fixedly connected to the side wall of the middle support column 7, and a limiting slot is formed between the middle support column 7. A middle limiting rod 13 is rotatably connected to the operating table 2. An end of the middle limiting rod 13 away from the operating table 2 is rotatably connected to an angle limiting button 14, and the angle limiting button 14 is rotatably engaged and limited in the limiting slot. When the middle support column 7 needs to be erected, the middle limiting rod 13 is rotated on the operating table 2 to drive the angle limiting button 14 to move in the limiting slot. When the middle support column 7 is rotated to an appropriate angle, the angle limiting button 14 is rotated to fix the positions of the middle support column 7 and the middle limiting rod 13, thereby providing a stable support for the bicycle.

[0038] A rotating sleeve 20 is fixedly connected to the side wall of the main support frame 5, an L-shaped limit rod 21 is movably connected inside the rotating sleeve 20, a wheel hub limit top piece 22 is threadedly connected to the end of the L-shaped limit rod 21 away from the rotating sleeve 20, and a sleeve limit knob 23 is threadedly connected to the side wall of the rotating sleeve 20. When the tire needs to be inspected, after the front wheel is lifted up by the main support frame 5, the position of the L-shaped limit rod 21 away from the tire is adjusted, the L-shaped limit rod 21 is rotated so that the wheel hub limit top piece 22 at its end abuts against the wheel hub, and then the position of the L-shaped limit rod 21 is fixed by rotating the sleeve limit knob 23 on the sleeve 20, thereby fixing the wheel hub and completing the inspection of the tire and wheel hub.

[0039] The main support frame 5 and the telescopic column 9 located in the auxiliary support column 8 are both movably connected with a V-shaped handle 16, and a pull rod limit rod is fixedly connected inside the V-shaped handle 16. A connecting rod 18 is vertically and movably penetrated through the pull rod limit rod. One end of the connecting rod 18 is fixedly connected with a tightening knob 15, and a tightening hook 17 is fixedly connected to the end of the connecting rod 18 away from the tightening knob 15. A tensioning spring 19 is sleeved on the connecting rod 18, and the tensioning spring 19 is arranged between the pull rod limit rod and the tightening knob 15.

[0040] Through the above technical solution, when the front and rear tires are removed and the frame needs to be repaired, the support frame connecting rod 6 is rotated to horizontally set on the main support frame 5, and the V-shaped handle 16 and the fastening hook 17 can be installed or removed on the auxiliary support column 8. After the hubs of the front and rear wheels are set on the main support frame 5 and the auxiliary support column 8, the V-shaped handle 16 is pulled upward to drive the fastening hook 17 to move, so that the fastening hook 17 hooks the hub, and then the V-shaped handle 16 is pulled downward to squeeze the tension spring 19 through the pull rod limit rod. When the V-shaped handle 16 is straightened and stuck, the fastening hook 17 tightly hooks the hub, ensuring the stability of the bicycle frame when it is erected for maintenance, and improving the work efficiency of the maintenance personnel. When the fastening hook 17 on the auxiliary support column 8 is not needed, it can be removed and installed and used when needed.

[0041] Two symmetrically arranged X-shaped articulated support frames 3 are movably connected between the base frame 1 and the operating table 2. A hinge point connecting rod 31 and multiple articulated frame connecting rods 32 are connected between the two X-shaped articulated support frames 3. The telescopic end of the lifting cylinder 41 is vertically connected to the hinge point connecting rod 31.

[0042] A pedal connecting rod 24 is rotatably connected to the base frame 1. The pedal connecting rod 24 passes through the base frame 1 and rotates horizontally, and one end of the pedal connecting rod 24 is fixedly connected to a foot pedal 25. An auxiliary top rod 26 is fixedly connected in parallel to the pedal connecting rod 24. One end of the X-shaped hinged support frame 3 close to the base frame 1 is rotatably connected to the edge of the base frame 1, and the other end of the X-shaped hinged support frame 3 close to the base frame 1 is horizontally slidably connected to the base frame 1, and the auxiliary top rod 26 abuts against one side of the X-shaped hinged support frame 3 that is rotatably connected to the base frame 1.

[0043] Through the above technical scheme, when the operating platform 2 needs to be raised, the lifting handbrake 4 is squeezed to control the telescopic end of the lifting cylinder 41 to extend, thereby pushing the hinge point connecting rod 31 to move upward, and then driving the X-shaped articulated support frame 3 to be propped up, and at the same time, stepping on the pedal 25 to drive the pedal connecting rod 24 to rotate, thereby driving the auxiliary push rod 26 to be supported on the X-shaped articulated support frame 3 and assisting the lifting cylinder 41 to open the X-shaped articulated support frame 3, thereby realizing the rising of the operating platform 2. When the operating platform 2 needs to be lowered, the lifting handbrake 4 is squeezed to control the telescopic end of the lifting cylinder 41 to retract, and stepping on the pedal to make the auxiliary push rod 26 fall, thereby realizing the folding of the X-shaped articulated support frame 3 and completing the lowering process of the operating platform 2.

[0044] The front fork fixing assembly also includes two adjusting L-shaped screws 27, which are horizontally threadedly connected to the main support frame 5. The adjacent ends of the two adjusting L-shaped screws 27 are fixedly connected with a clamping joint 28, and the pointed column head 29 and the cylindrical head 30 are clamped in the corresponding clamping joint 28. When it is necessary to inspect the tire or other maintenance work that does not require the removal of the tire, the pointed column head 29 and the cylindrical head 30 are inserted into the corresponding clamping joint 28, and the clamping joint 28 is driven by the two L-shaped screws 27 to move until the pointed column head 29 and the cylindrical head 30 are inserted into the corresponding slots of the bicycle. After the L-shaped screws 27 are turned to make the clamping more stable, the main support frame 5 is lifted, and one wheel of the bicycle is lifted for easy maintenance.

[0045] The four corners of the base frame 1 are fixedly connected with buffer blocks 33, and each buffer block 33 is provided with a rubber pad 34, which can contact the lower surface of the operating table 2. After the operating table 2 is lowered to make the X-shaped articulated support frame 3 folded, the X-shaped articulated support frame 3 has a certain thickness. In order to prevent the X-shaped articulated support frame 3 from being squeezed and deformed and affecting its use, the buffer blocks 33 and the rubber pads 34 can leave a certain space between the base frame 1 and the operating table 2 for placing the folded components to avoid component damage.

[0046] A sloped slab 35 is hingedly connected to the side of the operating platform 2 away from the main support frame 5, and a handle frame 36 is fixedly connected to the upper part of the operating platform 2, and a lifting handbrake 4 is connected to the handle frame 36. When repairing a bicycle, the sloped slab 35 is set on the ground to facilitate pushing the bicycle to be repaired onto the operating platform 2, and then the lifting handbrake 4 on the handle frame 36 is pressed to control the operating platform 2 to rise and fall.

[0047] A rectangular square groove is provided on the operating table 2 for hiding the middle support column 7 and the auxiliary support column 8. The side of each rectangular square groove is rotatably connected with a covering flap 37, which can cover the rectangular square groove to keep the operating table 2 clean and tidy when not in use.

[0048] When a bicycle maintenance lift is in use, the sloped slab 35 is opened and set on the ground, and the bicycle to be repaired is pushed onto the operating table 2. The lifting handbrake 4 is squeezed to control the telescopic end of the lifting cylinder 41 to extend, thereby pushing the hinge point connecting rod 31 to move upward, thereby driving the X-shaped hinged support frame 3 to be propped up, and at the same time, the pedal 25 is stepped down to drive the pedal connecting rod 24 to rotate, thereby driving the auxiliary push rod 26 to be supported on the X-shaped hinged support frame 3 and assisting the lifting cylinder 41 to prop up the X-shaped hinged support frame 3, and lifting the operating table 2;

[0049] The front wheel is clamped and positioned by the cylindrical top 30 and the pointed top 29, and the front wheel is lifted up by the main support frame 5. The middle support column 7 is pulled out from the rectangular square groove, and the contact bracket 10 is dragged to a suitable position and pressed against the middle position of the bicycle. It is fixed by the limit knob 11, and after adjusting the angle of the middle support column 7, the angle limit knob 14 is screwed into the limit slot to fix the angle, thereby lifting the bicycle for easy maintenance.

[0050] When the front and rear tires are removed and the frame needs to be repaired, the support frame connecting rod 6 is rotated to horizontally place it on the main support frame 5, and the hub fastening assembly can be installed or removed on the auxiliary support column 8. After the hubs of the front and rear wheels are placed on the main support frame 5 and the auxiliary support column 8, the V-shaped handle 16 is pulled upward to drive the fastening hook 17 to move, so that the fastening hook 17 hooks the hub, and then the V-shaped handle 16 is pulled downward to squeeze the tensioning spring 19 through the pull rod limit rod. When the V-shaped handle 16 is straightened and stuck, the fastening hook 17 tightly hooks the hub, so that during maintenance, bicycles of various shapes in the inspection and disassembly process can be erected and fixed, and the stable lifting and lowering of the operating position can be adjusted to meet various maintenance needs, ensure the stability of the bicycle frame when it is erected for maintenance, and improve the work efficiency of maintenance personnel.

[0051] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0052] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A bicycle maintenance lift, comprising a base frame (1) and an operating platform (2), characterized in that: A lifting cylinder (41) is arranged between the base frame (1) and the operating platform (2); a lifting hand brake (4) for controlling the extension and retraction of the lifting cylinder (41) is arranged on the side of the operating platform (2); a main support frame (5), a support frame connecting rod (6) and a front fork fixing assembly for clamping the front fork are rotatably arranged on one side of the operating platform (2); the main support frame (5) is rotatably connected to the side of the operating platform (2); the support frame connecting rod (6) is rotatably connected to the main support frame (5); and the front fork fixing assembly includes a pointed column head (29) and a cylindrical head (30), the pointed column head (29) and the cylindrical head (30) are both movably connected to the main support frame (5), the operating table (2) is rotatably connected to a middle support column (7) and a secondary support column (8), the middle support column (7) and the secondary support column (8) are both movably connected to a contact bracket (10), the support frame connecting rod (6) and the secondary support column (8) are both provided with a fastening hook (17) for clamping the hub, and the main support frame (5) is movably connected to a hub limiting top piece (22) for repairing and fixing the hub.

2. A bicycle maintenance lift according to claim 1, characterized in that: The middle support column (7) and the auxiliary support column (8) are hollow and slidably provided with telescopic columns (9). A contact bracket (10) for supporting a bicycle is movably connected to one end of each telescopic column (9) away from the operating table (2) and the articulated frame connecting rod (32). The middle support column (7) and the auxiliary support column (8) are both threadedly connected with a limit knob (11), and the limit knob (11) can conflict with the telescopic column (9).

3. A bicycle maintenance lift according to claim 1, characterized in that: A U-shaped limiting rod (12) is fixedly connected to the side wall of the middle support column (7) and a limiting slot is formed between the middle support column (7); a middle limiting rod (13) is rotatably connected to the operating table (2); an end of the middle limiting rod (13) away from the operating table (2) is rotatably connected to an angle limiting button (14); the angle limiting button (14) is rotatably engaged and limited in the limiting slot.

4. A bicycle maintenance lift according to claim 1, characterized in that: A rotating sleeve (20) is fixedly connected to the side wall of the main support frame (5), an L-shaped limiting rod (21) is movably connected inside the rotating sleeve (20), the hub limiting top piece (22) is threadedly connected to an end of the L-shaped limiting rod (21) away from the rotating sleeve (20), and a sleeve limiting knob (23) passes through and is threadedly connected to the side wall of the rotating sleeve (20).

5. A bicycle maintenance lift according to claim 2, characterized in that: The main support frame (5) and the telescopic column (9) located in the auxiliary support column (8) are both movably connected with a V-shaped handle (16), and a pull rod limit rod is fixedly connected inside the V-shaped handle (16). A connecting rod (18) is vertically and movably passed through the pull rod limit rod, and one end of the connecting rod (18) is fixedly connected to a tightening knob (15), and the tightening hook (17) is fixedly connected to the end of the connecting rod (18) away from the tightening knob (15). A tensioning spring (19) is sleeved on the connecting rod (18), and the tensioning spring (19) is arranged between the pull rod limit rod and the tightening knob (15).

6. A bicycle maintenance lift according to claim 1, characterized in that: Two symmetrically arranged X-shaped articulated support frames (3) are movably connected between the base frame (1) and the operating table (2); a hinge point connecting rod (31) and a plurality of articulated frame connecting rods (32) are connected between the two X-shaped articulated support frames (3); and the telescopic end of the lifting cylinder (41) is vertically connected to the hinge point connecting rod (31).

7. A bicycle maintenance lift according to claim 6, characterized in that: The base frame (1) is rotatably connected to a pedal connecting rod (24), the pedal connecting rod (24) penetrates the base frame (1) and rotates horizontally and one end of the pedal connecting rod is fixedly connected to a pedal (25), an auxiliary push rod (26) is parallelly fixedly connected to the pedal connecting rod (24), one end of the X-shaped hinged support frame (3) close to the base frame (1) is rotatably connected to the edge of the base frame (1), and the other end of the X-shaped hinged support frame (3) close to the base frame (1) is horizontally slidably connected to the base frame (1), and the auxiliary push rod (26) abuts against the side of the X-shaped hinged support frame (3) rotatably connected to the base frame (1).

8. The bicycle maintenance lift according to claim 1, characterized in that: The front fork fixing assembly also includes two adjusting L-shaped screws (27), the two adjusting L-shaped screws (27) are horizontally threadedly connected to the main support frame (5), the adjacent ends of the two adjusting L-shaped screws (27) are fixedly connected with a clamping joint (28), and the pointed column head (29) and the cylindrical head (30) are clamped in the corresponding clamping joint (28).

9. A bicycle maintenance lift according to claim 1, characterized in that: The four corners of the base frame (1) are fixedly connected with buffer blocks (33), and each buffer block (33) is provided with a rubber pad (34), and the rubber pad (34) can contact the lower surface of the operating table (2).

10. The bicycle maintenance lift according to claim 1, characterized in that: A sloped plate (35) is hingedly connected to the side of the operating platform (2) facing away from the main support frame (5); a handle frame (36) is fixedly connected to the upper part of the operating platform (2); the lifting hand brake (4) is connected to the handle frame (36); a rectangular square groove for hiding the middle support column (7) and the auxiliary support column (8) is opened on the operating platform (2); and a covering flap (37) is rotatably connected to the side of each rectangular square groove.

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