Maintenance support and bicycle maintenance device

Abstract

The utility model discloses a maintenance support and a bicycle maintenance device, belongs to the field of bicycle maintenance devices, solves the problem that an existing maintenance device is tedious in adjustment of a bicycle body, and adopts the technical scheme that the maintenance support comprises a base, a stand column, a sleeve and a clamping assembly, the sleeve is used for being connected to the outer side of a target piece in a sleeving mode and supporting the target piece, the sleeve is installed on the stand column, one end of the sleeve is provided with an opening so that at least part of the structure of the target piece can stretch into the sleeve through the opening of the sleeve, and the clamping assembly is used for clamping the target piece and installed on the sleeve and comprises a driving shaft, an upper clamping block and a lower clamping block. The driving shaft is used for driving the upper clamping block and the lower clamping block to be close to or away from each other, a notch is formed in the side wall of the sleeve, and the upper clamping block and the lower clamping block are arranged at the notch so that the upper clamping block and the lower clamping block can penetrate through the notch to clamp a target piece. The utility model is mainly used for enabling the adjustment of the vehicle body to be more convenient and quicker.

Description

Technical Field

[0001] The utility model shows a maintenance bracket and a bicycle maintenance device, belonging to the technical field of bicycle maintenance devices. Background Art

[0002] A bicycle repair device is a structure that lifts and supports a bicycle during repair, so that a repairman can repair the bicycle more conveniently. Existing bicycle repair devices usually include a base, a support column and a clamping mechanism, and the clamping mechanism is used to clamp and fix the body of the bicycle. However, the existing repair device can only control the lifting and lowering of the bicycle. During the repair process, multiple parts need to be assembled on the body, and the installation positions of the parts on the body are relatively scattered. During the installation process, the body needs to be flipped back and forth to adjust the body to a position suitable for installing the parts. During the adjustment of the body, some repair devices using fiber optics need to be manually flipped, and the tightness of the clamping mechanism needs to be frequently controlled, which leads to a high labor intensity in the repair process, cumbersome operation, and reduced repair efficiency. Utility Model Content

[0003] The utility model aims to solve the problem that the existing maintenance device is complicated to adjust the vehicle body, and for this purpose provides a maintenance bracket and a bicycle maintenance device, which makes the adjustment of the vehicle body more convenient and quick.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A maintenance bracket, comprising:

[0006] Base;

[0007] A column mounted on the base;

[0008] A sleeve, which is used to be sleeved on the outside of the target part and support the target part, the sleeve is installed on the column, and one end of the sleeve is open so that at least part of the structure of the target part can extend into the sleeve through the opening of the sleeve;

[0009] A clamping assembly is used to clamp a target part. The clamping assembly is installed on the sleeve. The clamping assembly includes a driving shaft, an upper clamping block and a lower clamping block. The driving shaft is used to drive the upper clamping block and the lower clamping block to move closer to or away from each other. A notch is provided on the side wall of the sleeve. The upper clamping block and the lower clamping block are arranged at the position of the notch so that the upper clamping block and the lower clamping block can pass through the notch to clamp the target part.

[0010] The beneficial effects of adopting the utility model are:

[0011] The maintenance bracket described in the utility model comprises a sleeve and a clamping assembly, wherein one end of the sleeve is opened so that part of the target part can extend into the sleeve through the opening, and the clamping assembly clamps and fixes the target part extending into the sleeve, thereby achieving fixation of the target part, and when the body of the bicycle needs to be adjusted, the clamping assembly releases the clamping of the target part, so that the target part can rotate freely in the sleeve, and the body of the bicycle can be adjusted by rotating the sleeve to meet the maintenance needs of the maintenance personnel. During the adjustment process, there is no need to manually flip the body, which can greatly reduce the labor intensity during the adjustment process, provide convenience for the maintenance personnel, and also improve the maintenance efficiency; in addition, the clamping assembly comprises an upper clamp The upper block and the lower clamping block, and the upper clamping block and the lower clamping block are moved closer to or farther away from each other to clamp or release the target part. After the clamping assembly releases the target part, the sleeve supports the target part, which can prevent the target part from directly detaching from the maintenance bracket, thereby eliminating the need for repeated installation of the target part and facilitating the adjustment of the target part. At the same time, the clamping assembly can realize rapid clamping and release of the target part, making the adjustment of the bicycle simpler and more convenient. Secondly, the clamping assembly and the sleeve cooperate with the target part to perform stepless adjustment, so that the body of the bicycle can be positioned at any rotation angle, allowing the maintenance personnel to maintain a more comfortable posture, reducing the burden on the body during the maintenance process, and helping to improve the user experience of the maintenance personnel.

[0012] Preferably, the clamping assembly also includes a mounting seat, a telescopic spring and a limit piece, the mounting seat is provided with a mounting cavity with an upper opening, the lower clamp block is threadedly connected to the driving shaft, the upper clamp block is sleeved on the driving shaft and is located above the lower clamp block, the upper clamp block can rotate relative to the driving shaft and can slide along the axial direction of the driving shaft, the telescopic spring is arranged between the upper clamp block and the lower clamp block to make the upper clamp block and the lower clamp block move away from each other, the limit piece is fixed to the driving shaft and is located above the upper clamp block, and is used to limit the upper clamp block, the upper clamp block and the lower clamp block are arranged in the mounting cavity and adapted to the mounting cavity, so that the upper clamp block and the lower clamp block can slide along the axial direction of the driving shaft in the mounting cavity, and can limit the upper clamp block and the lower clamp block from rotating relative to the mounting seat through the mounting cavity. By adopting the above-mentioned technical solution, the installation cavity can limit the circumferential rotation of the upper clamp block and the lower clamp block, thereby making the rotation of the drive shaft smoother and more labor-saving, while also ensuring relative rotation between the drive shaft and the lower clamp block to ensure the normal operation of the clamping assembly; in addition, the telescopic spring can support the upper clamp block to maintain the distance between the upper clamp block and the lower clamp block, so that the clamping assembly can quickly release the target part, which is conducive to simplifying the overall structure and operation method of the clamping assembly.

[0013] Preferably, the lower end of the installation cavity is open, and a support is installed at the bottom of the installation seat, and the support supports the lower clamping block. With the above technical solution, the upper and lower ends of the installation cavity both pass through the installation seat, which can reduce the difficulty and cost of manufacturing the installation seat; in addition, the support can form a support for the lower clamping block, thereby reducing the possibility of the lower clamping block detaching from the installation cavity, which is conducive to improving the stability of the overall structure of the clamping assembly.

[0014] Preferably, the clamping assembly further comprises a locking handle, and the locking handle is fixed to the drive shaft. With the above technical solution, the locking handle can make the rotation of the drive shaft more convenient and labor-saving, which is conducive to speeding up the clamping speed or release speed of the clamping assembly on the target part, thereby improving the maintenance speed of the maintenance personnel, and also helping to improve the user experience of the maintenance personnel.

[0015] Preferably, the upper clamp block is provided with a first contact curved surface, and the lower clamp block is provided with a second contact curved surface. By adopting the above-mentioned technical solution, the first contact curved surface and the second contact curved surface can increase the contact area of ​​the upper clamp block and the lower clamp block on the target part, thereby increasing the clamping strength of the upper clamp block and the lower clamp block on the target part, reducing the possibility of the target part loosening, and reducing the safety hazards in the maintenance process; in addition, the first contact curved surface and the second contact curved surface can better fit the outer surface of the target part, thereby reducing the damage to the target part caused by the clamping assembly, which is conducive to increasing the service life of the target part.

[0016] Preferably, the clamping assembly further comprises a mounting seat, the drive shaft is rotatably connected to the mounting seat, a mounting cavity is provided on the mounting seat, the upper clamp block and the lower clamp block are arranged in the mounting cavity and adapted to the mounting cavity, so that the upper clamp block and the lower clamp block can slide along the axial direction of the drive shaft in the mounting cavity, and the upper clamp block and the lower clamp block can be limited to rotate relative to the mounting seat through the mounting cavity, and the upper clamp block and the lower clamp block are respectively threadedly connected to the drive shaft, and the thread directions are opposite. With the above-mentioned technical solution, the rotation of the drive shaft can simultaneously control the upper clamp block and the lower clamp block to move relative to or away from each other, which can further speed up the clamping or releasing speed of the clamping assembly on the target part.

[0017] Preferably, the axis of the sleeve is arranged horizontally; or, the height of the opening end of the sleeve is higher than the end of the sleeve connected to the lifting column. The above technical solution can reduce the possibility of the target part automatically detaching from the sleeve, which is conducive to improving the connection stability between the target part and the sleeve, and can also reduce safety hazards during maintenance.

[0018] Preferably, the column is a lifting column with a lifting function, the upper part of the lifting column can be lifted relative to the base, and the sleeve is installed on the upper part of the lifting column. With the above technical solution, the lifting column can adjust the height of the sleeve so that the sleeve can be positioned at a suitable height, thereby meeting the maintenance needs of maintenance personnel, so that maintenance personnel can maintain a comfortable posture for maintenance, reduce the burden on the body during the maintenance process, and help improve the user experience of maintenance personnel.

[0019] Preferably, the lifting column comprises a lifting column and an electric drive assembly for driving the lifting column to be electrically lifted. By adopting the above technical solution, the lifting column is controlled by the electric drive assembly, which can save manual adjustment and further reduce manual labor. At the same time, the electric drive assembly can make the adjustment of the lifting column more precise, and can be positioned at a suitable height at one time, reducing the process of repeated adjustments, and can improve the adjustment efficiency of the lifting column.

[0020] The utility model also shows a bicycle maintenance device, including any of the above-mentioned maintenance brackets, wherein the target part is a fixing fixture, and the fixing fixture is provided with a mounting portion for connecting with the maintenance bracket, the mounting portion extends into the sleeve, and the clamping assembly clamps the mounting portion.

[0021] Other features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described below in conjunction with the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the sleeve and the clamping assembly in the first embodiment of the utility model;

[0025] Figure 3 It is a cross-sectional view of the sleeve and the clamping assembly in the first embodiment of the utility model;

[0026] Figure 4 for Figure 3 A partial enlarged view of part A;

[0027] Figure 5 This is a schematic diagram of the structure of the clamping assembly in the first embodiment of the utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the third embodiment of the present utility model;

[0029] Figure 7 It is a cross-sectional view of the target part in the third embodiment of the present utility model.

[0030] Figure numerals: 1 base, 2 column, 21 lifting column, 22 electric drive component, 3 sleeve, 31 opening, 32 notch, 4 clamping assembly, 41 mounting seat, 411 mounting cavity, 412 support member, 42 upper clamping block, 421 first contact curved surface, 43 lower clamping block, 431 second contact curved surface, 44 driving shaft, 45 telescopic spring, 46 locking handle, 47 limit member, 5 target member, 51 main body, 511 screw rod, 512 upper clamping piece, 513 lower clamping piece, 515 mounting part, 522 engaging member, 523 driving member, 524 unlocking switch, 531 upper connecting plate, 532 intermediate sliding shaft, 533 lower connecting plate, 534 second spring. DETAILED DESCRIPTION

[0031] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection 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.

[0035] Embodiment 1:

[0036] like Figures 1 to 5 As shown, this embodiment shows a maintenance bracket, including a base 1, a column 2, a sleeve 3 and a clamping assembly 4, wherein the column 2 is fixedly mounted on the base 1, the column 2 includes a lifting column 21 and an electric drive assembly 22 for driving the lifting column 21 to lift electrically, the sleeve 3 is fixed to the upper end of the column 2, and the end of the sleeve 3 away from the column 2 is provided with an opening 31 for allowing the target part 5 to extend into the sleeve 3, the clamping assembly 4 includes a driving shaft 44, an upper clamping block 42 and a lower clamping block 43, the driving shaft 44 is used to drive the upper clamping block 42 and the lower clamping block 43 to move closer to or away from each other, a notch 32 is provided on the side wall of the sleeve 3, the upper clamping block 42 and the lower clamping block 43 are arranged at the position of the notch 32, so that the upper clamping block 42 and the lower clamping block 43 can pass through the notch 32 to clamp the target part 5.

[0037] It should be noted that the electric drive component 22 described in this embodiment is installed at the top of the lifting column 21, and the driving component controls the lifting of the lifting column 21, thereby driving the sleeve 3 to be lifted and lowered, so that the sleeve 3 can be positioned at a suitable height, thereby meeting the maintenance needs of the maintenance personnel, so that the maintenance personnel can maintain a comfortable posture for maintenance, reduce the burden on the body during the maintenance process, and help improve the maintenance personnel's user experience; in addition, by controlling the lifting and lowering of the lifting column 2 through the electric drive component 22, manual adjustment can be omitted, further reducing manual labor. At the same time, the electric drive component 22 can make the adjustment of the lifting column 21 more precise, and can be positioned at a suitable height at one time, reducing the process of repeated adjustments, and improving the adjustment efficiency of the lifting column 21.

[0038] Of course, it is understandable that in other embodiments, the lifting column 21 may also be provided with a manual adjustment member, and the lifting column 21 may be controlled to be raised or lowered by the manual adjustment member.

[0039] like Figure 2 and Figure 3As shown, the axis of the sleeve 3 described in this embodiment is horizontally arranged, one end of the sleeve 3 is fixed to the column 2, and the other end is provided with an opening 31 for the target part 5 to extend into, the clamping assembly 4 also includes a mounting seat 41, the mounting seat 41 is fixed to the side of the sleeve 3, and a notch 32 is provided at the connection between the sleeve 3 and the mounting seat 41, so that the mounting cavity 411 inside the mounting seat 41 is kept in communication with the inside of the sleeve 3. In this embodiment, the sleeve 3 is placed horizontally to reduce the possibility of the target part 5 automatically detaching from the sleeve 3, which is beneficial to improve the connection stability between the target part 5 and the sleeve 3, and can also reduce the safety hazards during maintenance; of course, it can be understood that in other embodiments, the height of the opening 31 end of the sleeve 3 can also be higher than the end of the sleeve 3 connected to the lifting column 21. When the target part 5 is extended into the sleeve 3, under the guidance of the sleeve 3, the target part 5 can have a movement tendency to extend into the sleeve 3, which can further reduce the possibility of the target part 5 automatically detaching from the sleeve 3 and improve the support stability of the sleeve 3 for the target part 5.

[0040] The sleeve 3 described in this embodiment can support the target part 5 and also allow the target part 5 to rotate freely. The body of the bicycle can be adjusted by rotating the sleeve 3 to meet the maintenance needs of the maintenance personnel. There is no need to manually flip the body during the adjustment process, which can greatly reduce the labor intensity during the adjustment process, provide convenience for the maintenance personnel, and improve the maintenance efficiency; secondly, the clamping assembly 4 and the sleeve 3 cooperate with the target part 5 to perform stepless adjustment, so that the body of the bicycle can be positioned at any rotation angle, so that the maintenance personnel can maintain a more comfortable posture, reducing the burden on the body during the maintenance process, which is conducive to improving the maintenance personnel's user experience.

[0041] like Figure 3 and Figure 5 As shown, the clamping assembly 4 in this embodiment also includes a telescopic spring 45 and a limiter 47. The upper end of the mounting cavity 411 passes through the top of the mounting seat 41. The lower clamping block 43 is threadedly connected to the driving shaft 44. The upper clamping block 42 is sleeved on the driving shaft 44 and is located above the lower clamping block 43. The upper clamping block 42 can rotate relative to the driving shaft 44 and can slide along the axial direction of the driving shaft 44. The telescopic spring 45 is sleeved on the driving shaft 44 and is limited between the upper clamping block 42 and the lower clamping block 43. The two ends of the telescopic spring 45 act on the upper clamping block 42 and the lower clamping block 43 respectively. The clamp block 43 is provided to make the upper clamp block 42 and the lower clamp block 43 have a tendency to move away from each other, the limit member 47 is fixed to the drive shaft 44 and is located above the upper clamp block 42, and is used to limit the upper clamp block 42, the upper clamp block 42 and the lower clamp block 43 are arranged in the mounting cavity 411 and adapted to the mounting cavity 411, so that the upper clamp block 42 and the lower clamp block 43 can slide along the axial direction of the drive shaft 44 in the mounting cavity 411, and can limit the upper clamp block 42 and the lower clamp block 43 from rotating relative to the mounting seat 41 through the mounting cavity 411.

[0042] During use, after the target part 5 is partially extended into the sleeve 3, the drive shaft 44 is rotated to cause relative displacement between the drive shaft 44 and the lower clamping block 43, and the drive shaft 44 gradually moves downward under the action of the lower clamping block 43. At the same time, the limit member 47 moves downward synchronously with the drive shaft 44, and drives the upper clamping block 42 to move downward, and the telescopic spring 45 is gradually compressed until the upper clamping block 42 abuts against the outer surface of the target part 5; when the upper clamping block 42 abuts against the target part 5, the drive shaft 44 continues to be rotated. At this time, the drive shaft 44 cannot move downward under the action of the upper clamping block 42, so that the lower clamping block 43 moves upward with the rotation of the drive shaft 44 until the lower clamping block 43 The block 43 abuts against the target part 5, that is, the upper clamping block 42 and the lower clamping block 43 clamp the target part 4; in this embodiment, the installation cavity 411 can limit the circumferential rotation of the upper clamping block 42 and the lower clamping block 43, thereby making the rotation of the drive shaft 44 smoother and more labor-saving, and at the same time, it can also ensure the relative rotation between the drive shaft 44 and the lower clamping block 43 to ensure the normal operation of the clamping assembly 4; in addition, the telescopic spring 45 can support the upper clamping block 42 to maintain the distance between the upper clamping block 42 and the lower clamping block 43, so that the clamping assembly 4 can quickly release the target part 5, which is conducive to simplifying the overall structure and operation method of the clamping assembly 4.

[0043] like Figure 3 As shown, the clamping assembly 4 in this embodiment also includes a locking handle 46, which is fixed to the top end of the drive shaft 44. The locking handle 46 can make the rotation of the drive shaft 44 more convenient and labor-saving, which is beneficial to speed up the clamping speed or release speed of the clamping assembly 4 to the target part 5, thereby improving the maintenance speed of the maintenance personnel, and is also beneficial to improving the user experience of the maintenance personnel.

[0044] like Figure 3 and Figure 4 As shown, the lower end of the mounting cavity 411 described in the present embodiment passes through the mounting seat 41, and a support member 412 is provided at the bottom end of the mounting seat 41. The support member 412 abuts against the lower clamping block 43, thereby limiting the lower clamping block 43 from detaching from the bottom of the mounting seat 41. The mounting seat 41 described in the present embodiment is a square tube as a whole, and the mounting cavity 411 is automatically formed inside the square tube. The use of the square tube can reduce the difficulty and cost of making the mounting seat 41, and there is no need for additional processing of the mounting cavity 411; in addition, the support member 412 described in the present embodiment and the mounting seat 41 are an integrated structure, the support member 412 is at the bottom of the mounting seat 41, and the support member 412 is bent along the side wall of the mounting seat 41 toward the inside of the mounting cavity 411, thereby reducing the opening 31 at the lower end of the mounting seat 41 to limit the lower clamping block 43 from detaching from the mounting seat 41.

[0045] Of course, it is understandable that in other embodiments, the support member 412 may be fixedly connected or detachably connected to the mounting seat 41; in addition, the support member 412 may be such that a partial projection of the lower clamping block 43 is within the support member 412, or the projection of the lower clamping block 43 may be entirely within the support member 412, or the support member 412 may completely seal the bottom of the mounting seat 41.

[0046] like Figure 5 As shown, in this embodiment, the upper clamp block 42 is provided with a first contact surface 421, and the lower clamp block 43 is provided with a second contact surface 431. The first contact surface 421 and the second contact surface 431 can increase the contact area of ​​the upper clamp block 42 and the lower clamp block 43 on the target part 5, thereby increasing the clamping strength of the upper clamp block 42 and the lower clamp block 43 on the target part 5, reducing the possibility of loosening of the target part 5, and reducing the safety hazards during the maintenance process; in addition, the first contact surface 421 and the second contact surface 431 can better fit the outer surface of the target part 5, thereby reducing the damage to the target part 5 caused by the clamping of the clamping assembly 4, which is beneficial to increasing the service life of the target part 5.

[0047] Embodiment 2:

[0048] The main difference between this embodiment and the first embodiment is that: in this embodiment, the driving shaft 44 is provided with two sections of threads with opposite rotation directions, and the upper clamping block 42 and the lower clamping block 43 are both threadedly connected to the driving shaft 44 and are respectively connected to the two sections of threads. When the driving shaft 44 rotates, the upper clamping block 42 and the lower clamping block 43 simultaneously approach or move away from each other along the driving shaft 44, which can increase the adjustment efficiency of the upper clamping block 42 and the lower clamping block 43, and further speed up the clamping or release speed of the clamping assembly 4 on the target part 5.

[0049] The other structures of the second embodiment are the same as those of the first embodiment, and will not be described in detail again.

[0050] Embodiment three:

[0051] like Figure 6 and Figure 7 As shown, this embodiment shows a bicycle maintenance device, including a target part 5 and a maintenance bracket as described in Example 1 or Example 2, wherein the target part 5 is a fixing clamp, and the fixing clamp is provided with a mounting portion 515 for connecting with the maintenance bracket, the mounting portion 515 extends into the sleeve 3, and the clamping assembly 4 is clamped on the outer surface of the mounting portion 515.

[0052] The fixing fixture includes a main body 51, a screw rod 511, an upper clamping piece 512, a lower clamping piece 513, a sliding piece and a locking handle 46 installed on the screw rod 511, wherein the main body 51 is a cylindrical structure, and the sliding piece includes an upper connecting plate 513, an intermediate sliding shaft 532 and a lower connecting plate 533 connected in sequence, the lower connecting plate 533 is slidably connected to the inside of the main body 51, a second spring 534 is provided between the lower clamping plate and the main body 51, one end of the intermediate sliding shaft 532 is fixed to the lower connecting plate 533, and the other end extends to the outside of the main body 51 along the axial direction of the main body 51 and is fixedly connected to the upper connecting plate 513, the two ends of the screw rod 511 pass through the upper connecting plate 513 and the lower connecting plate 533 respectively, and are rotatably connected to the sliding piece, the locking handle is fixed to the end of the screw rod 511 close to the upper connecting plate 513, and the locking handle rotates to drive the rotation of the screw rod 511 The upper clamping piece 512 is fixedly installed on the upper connecting plate 513, and the lower clamping piece 513 is fixedly installed on the end of the main body 51. The sliding member moves along the axial direction of the main body 51 to control the upper clamping piece 512 to approach or move away from the lower clamping piece 513. A gearing 522 is slidably arranged in the main body 51, and the end of the gearing 522 facing the screw rod 511 is provided with a convex tooth engaged with the screw rod 511. A driving member 523 is provided on the main body 51. The gearing 522 and the main body 51 are relatively fixed in the axial direction of the screw rod 511, and the sliding direction of the gearing 522 remains perpendicular to the axial direction of the screw rod 511. The driving member 523 is threadedly connected with the gearing 522. When the driving member 523 rotates, it drives the gearing 522 to approach or move away from the screw rod 511 relatively, so that the gearing 522 can remain engaged with the screw rod 511 or disengage from the screw rod 511.

[0053] During use of this embodiment, the unlocking switch 524 is first used to control the rotation of the driving member 523, thereby driving the engaging member 522 away from the screw rod 511 until the convex teeth of the engaging member 522 are disengaged from the screw rod 511. At this time, the engaging member 522 releases the restriction on the screw rod 511, and under the action of the second spring 534, the sliding member as a whole slides axially along the main body 51, and the sliding member drives the screw rod 511 to move toward the end away from the main body 51. At the same time, the electric upper clamp 512 moves away from the lower clamp 513, thereby increasing the distance between the upper clamp 512 and the lower clamp 513, so as to facilitate placing the crossbar of the bicycle between the upper clamp 512 and the lower clamp 513.

[0054] Afterwards, the engaging member 522 is kept disengaged from the screw rod 511, and the sliding member is dragged to move the upper clamping piece 512 and the lower clamping piece 513 to approach each other until both the upper clamping piece 512 and the lower clamping piece 513 are against the bicycle crossbar, and the driving member 523 is controlled to rotate by the unlocking switch 524, thereby driving the engaging member 522 to approach the screw rod 511 until the convex teeth of the engaging member 522 are kept engaged with the screw rod 511. At this time, the engaging member 522 forms an axial limit for the screw rod 511, and then the locking handle is rotated to make the screw rod 511 rotate, and the upper clamping piece 512 is electrically driven to continue to approach the lower clamping piece 513, thereby increasing the clamping force of the upper clamping piece 512 and the lower clamping piece 513 on the bicycle crossbar, making the clamping of the bicycle more stable.

[0055] After the fixing clamp completes clamping the bicycle, the mounting portion 515 of the fixing clamp is extended into the sleeve 3 through the opening 31 of the sleeve 3. After the fixing clamp is adjusted to a suitable position, the driving shaft 44 is controlled to rotate by the locking handle 46, thereby driving the upper clamp block 42 and the lower clamp block 43 to approach each other, so that the upper clamp block 42 and the lower clamp block 43 clamp the fixing clamp, thereby limiting the rotation of the fixing clamp to facilitate maintenance personnel to perform maintenance; when it is necessary to adjust the bicycle body, the upper clamp block 42 and the lower clamp block 43 are controlled to separate by the locking handle 46, and the upper fixing clamp can rotate freely. After the adjustment is completed, the fixing clamp is clamped again by the upper clamp block 42 and the lower clamp block 43, and maintenance work can be carried out.

[0056] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A maintenance bracket, characterized in that: include: Base; A column mounted on the base; A sleeve, which is used to be sleeved on the outside of the target part and support the target part, the sleeve is installed on the column, and one end of the sleeve is open so that at least part of the structure of the target part can extend into the sleeve through the opening of the sleeve; A clamping assembly is used to clamp a target part. The clamping assembly is installed on the sleeve. The clamping assembly includes a driving shaft, an upper clamping block and a lower clamping block. The driving shaft is used to drive the upper clamping block and the lower clamping block to move closer to or away from each other. A notch is provided on the side wall of the sleeve. The upper clamping block and the lower clamping block are arranged at the position of the notch so that the upper clamping block and the lower clamping block can pass through the notch to clamp the target part.

2. A maintenance bracket according to claim 1, characterized in that: The clamping assembly also includes a mounting seat, a telescopic spring and a limit piece, the mounting seat is provided with a mounting cavity with an upper opening, the lower clamp block is threadedly connected to the driving shaft, the upper clamp block is sleeved on the driving shaft and is located above the lower clamp block, the upper clamp block can rotate relative to the driving shaft and can slide along the axial direction of the driving shaft, the telescopic spring is arranged between the upper clamp block and the lower clamp block to make the upper clamp block and the lower clamp block move away from each other, the limit piece is fixed to the driving shaft and is located above the upper clamp block, and is used to limit the upper clamp block, the upper clamp block and the lower clamp block are arranged in the mounting cavity and adapted to the mounting cavity, so that the upper clamp block and the lower clamp block can slide along the axial direction of the driving shaft in the mounting cavity, and can limit the upper clamp block and the lower clamp block from rotating relative to the mounting seat through the mounting cavity.

3. A maintenance bracket according to claim 2, characterized in that: The lower end of the installation cavity is open, and a support member is installed at the bottom of the installation seat, and the support member supports the lower clamping block.

4. A maintenance bracket according to claim 1, characterized in that: The clamping assembly also includes a locking handle, and the locking handle is fixed to the driving shaft.

5. A maintenance bracket according to claim 1, characterized in that: The upper clamping block is provided with a first contact curved surface, and the lower clamping block is provided with a second contact curved surface.

6. A maintenance bracket according to claim 1, characterized in that: The clamping assembly also includes a mounting seat, the drive shaft is rotatably connected to the mounting seat, the mounting seat is provided with a mounting cavity, the upper clamp block and the lower clamp block are arranged in the mounting cavity and adapted to the mounting cavity, so that the upper clamp block and the lower clamp block can slide along the axial direction of the drive shaft in the mounting cavity, and the upper clamp block and the lower clamp block can be limited by the mounting cavity to rotate relative to the mounting seat, the upper clamp block and the lower clamp block are respectively threadedly connected to the drive shaft, and the thread directions are opposite.

7. A maintenance bracket according to claim 1, characterized in that: The axis of the sleeve is arranged horizontally; or, the height of the opening end of the sleeve is higher than the end of the sleeve connected to the lifting column.

8. A maintenance bracket according to claim 1, characterized in that: The column is a lifting column with a lifting function, the upper part of the lifting column can be lifted and lowered relative to the base, and the sleeve is installed on the upper part of the lifting column.

9. A maintenance bracket according to claim 8, characterized in that: The lifting column comprises a lifting column and an electric drive component for driving the lifting column to lift electrically.

10. A bicycle maintenance device, characterized in that: It comprises the maintenance bracket according to any one of claims 1 to 9, wherein the target part is a fixing fixture, the fixing fixture is provided with a mounting portion for connecting with the maintenance bracket, the mounting portion extends into the sleeve, and the clamping assembly clamps the mounting portion.

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