CN212115090U - Positioning workpiece for motor maintenance - Google Patents

Abstract

The utility model discloses a positioning workpiece for motor maintenance, which comprises a bearing plate and is characterized in that two chutes are symmetrically and fixedly connected to the left side of the top end of the bearing plate, one end of a lead screw is rotatably connected with the right wall of the inner side of each chute, and the other end of the lead screw is rotatably communicated with the left wall of each chute; an angle adjusting mechanism is arranged above the lead screw, the lower end of the angle adjusting mechanism penetrates through the left side and the right side and is provided with a threaded hole matched with the lead screw, and the lead screw can rotatably penetrate through the threaded hole; the right end of the angle adjusting mechanism is hinged with the left end of the motor barrel; a fastening assembly is arranged on the right side of the top end of the bearing plate, the center of the right end of the fastening assembly is rotatably connected with the upper end of the fixed seat, and the lower end of the fixed seat is fixedly connected with the bearing plate; the utility model discloses the effectual motor positioner for the maintenance that has solved can not satisfy the motor of different models, the motor is fixed firm inadequately, can not effectively the pivoted problem during motor maintenance.

Description

Positioning workpiece for motor maintenance

Technical Field

The utility model relates to a motor maintenance appurtenance field, in particular to motor maintenance is with location work piece.

Background

The motor is commonly called as a motor and is an electromagnetic device for realizing electric energy conversion or transmission according to the law of electromagnetic induction; the motor is represented by a letter M (old standard is represented by D) in a circuit, the motor is mainly used for generating driving torque and serving as a power source of electrical appliances or various machines, the generator is represented by a letter G in the circuit, and the generator is mainly used for converting mechanical energy into electric energy; because the motor is used continuously for a long time, in addition, the operation of a user is improper, motor faults can occur frequently, and at the moment, most people can select to maintain the motor so as to improve the utilization rate of the motor.

However, the existing motor positioning device for maintenance has the following problems: firstly, most of the existing motor positioning devices for maintenance cannot meet the requirements of motors with different models, and motor maintenance factories just maintain motors with various models; secondly, the existing motor positioning device for maintenance is not firm enough for fixing the motor, so that the time consumption of a disassembly process before the motor maintenance is very long; third, current maintenance can not effectively rotate the motor when the motor is maintained with motor positioner, consequently needs the maintenance personal to fix the motor angle of readjustment once more, and is comparatively troublesome, wastes time and energy and has reduced the work efficiency of motor maintenance.

Disclosure of Invention

An object of the utility model is to provide a motor maintenance is with location work piece can effectively solve the problem of mentioning in the above-mentioned background art.

The utility model adopts the technical scheme as follows: a positioning workpiece for motor maintenance comprises a bearing plate and is characterized in that two sliding chutes are symmetrically and fixedly connected to the left side of the top end of the bearing plate, one end of a lead screw is rotatably connected with the right wall of the inner side of each sliding chute, and the other end of the lead screw is rotatably communicated with the left wall of each sliding chute; an angle adjusting mechanism is arranged above the lead screw, the lower end of the angle adjusting mechanism penetrates through the left side and the right side and is provided with a threaded hole matched with the lead screw, and the lead screw can rotatably penetrate through the threaded hole; the right end of the angle adjusting mechanism is hinged with the left end of the motor barrel; the right side of the top end of the bearing plate is provided with a fastening assembly, the center of the right end of the fastening assembly is rotatably connected with the upper end of the fixing seat, and the lower end of the fixing seat is fixedly connected with the bearing plate.

Further, the lead screw can be directly replaced by a pneumatic telescopic rod or an electric telescopic rod.

Further, the angle adjusting mechanism comprises vertical beams, cross beams, double-thread screw rods, sleeves, limiting blocks and hinge rods, wherein the left side and the right side of the lower end of each vertical beam are provided with threaded holes matched with the screw rods, the screw rods can rotatably penetrate through the threaded holes, the double-thread screw rods are arranged on the upper side between the two vertical beams, and two ends of each double-thread screw rod are rotatably connected with the inner walls of the two vertical beams respectively; the two ends of the double-thread screw are symmetrically provided with threads with opposite rotation directions, the threads at the two ends are respectively rotatably sleeved with a sleeve, the lower end of the sleeve is fixedly connected with a limiting block, the lower end of the limiting block is in sliding fit with a sliding groove arranged at the upper end of a cross beam, the cross beam is arranged at the lower side of the double-thread screw, and the two ends of the cross beam are respectively fixedly connected with the inner walls of the two vertical beams; the outer wall of the right side of the sleeve is rotatably connected with a hinged rod, and the free ends of the hinged rods arranged on the front side and the rear side are rotatably connected with the lower side of the left end and the upper side of the left end of the motor barrel.

Further, the fastening assembly comprises a shell, an inner cylinder, a worm, a first worm gear, a second worm gear, a first main gear, a second main gear, a first driven gear, a second driven gear, a third driven gear, a first conical gear, a second conical gear, a telescopic assembly and a limiting cylinder; the shell is of a columnar cavity structure, one end of the inner cylinder penetrates through the center of the shell and is fixedly connected with the bottom end of the inner side of the shell, and the diameter of the inner cylinder is smaller than that of the shell; the upper end of the inner cylinder on the inner side of the shell is provided with a worm, one end of the worm is rotatably connected with the rear side of the inner wall of the shell, the other end of the worm can rotatably penetrate through the rear wall of the shell, the front side and the rear side of the lower end of the worm are respectively and symmetrically provided with a first worm wheel and a second worm wheel, the first worm wheel and the second worm wheel are respectively and rotatably connected with the right side of the inner cavity of the shell through rotating shafts, and the left sides of the first worm wheel and the second worm wheel are respectively and concentrically connected with a first main; the first master gear and the second master gear are meshed with a first slave gear in a matched manner, the outer side ends of the first master gear and the second master gear are meshed with a second slave gear and a third slave gear in a matched manner, and the first slave gear, the second slave gear and the third slave gear are rotatably connected with the right wall of the inner side of the shell through rotating shafts; the left sides of the first driven gear, the second driven gear and the third driven gear are all concentrically connected with a first conical gear, the lower end tooth surface of the first conical gear is meshed with a second conical gear in a mutually matched mode, a telescopic assembly is welded to the back of the first conical gear, the telescopic assembly is matched with the inner chute of the limiting cylinder in a sliding mode, and the free end of the limiting cylinder is detachably communicated with the side wall of the inner cylinder and is arranged in the inner cavity of the inner cylinder.

Furthermore, an elastic part is welded at the free end of the inner cylinder.

Furthermore, the telescopic assembly comprises a screw rod, a threaded cylinder and a positioning block, the screw rod is fixedly connected with the back of the second conical gear in a concentric mode, the screw rod and the threaded cylinder are rotatably assembled, the positioning block is arranged at the symmetrical side end of the threaded cylinder, and the positioning block is matched with a sliding groove in the inner cylinder.

Furthermore, the upper end of the motor is provided with a threaded hole matched with the fastening bolt, and the tail end of the fastening bolt penetrates through the threaded hole and abuts against the motor in the motor barrel.

Furthermore, the free ends of the lead screw, the double-thread lead screw and the worm are all welded with a rotary hand valve.

Furthermore, a supporting table is arranged on the lower side of the motor barrel and the positioning barrel arranged at the outer end of the shell, an arc-shaped groove is arranged on the supporting table, and the arc-shaped groove is matched with the lower end faces of the outer walls of the motor barrel and the inner barrel in a rotating mode.

The beneficial effects of the utility model reside in that:

the utility model discloses a combine angle adjustment mechanism, fastening components, effectually solved current motor positioner for the maintenance can not satisfy the motor of different models, the motor is fixed firm inadequately, can not effectively the pivoted problem during motor maintenance.

The utility model discloses in, through angle adjustment mechanism, can effectually rotate the motor that is in the maintenance state to be convenient for maintenance personal maintains the motor of motor section of thick bamboo inside through the maintenance groove, saved maintenance personal and carried out the loaded down with trivial details step of fixing once more after adjusting the angle again with the motor, effectively improved the work efficiency of motor maintenance, saved a large amount of time.

The utility model discloses in, can effectually firmly fix the motor through being provided with fastening components, avoid rotating the motor when maintenance personal work and influence the staff and continue work, cause the health injury to maintenance personal when the motor rotates suddenly even, simultaneously, the benefit that is provided with fastening components lies in the motor that can effectual adaptation different specifications, has increased the practicality that the repacking was put, and the motor of having avoided using different specifications still need change different positioner, wastes time and energy and the consumptive material is serious.

The utility model discloses in, can effectually laminate fastening components and motor completely through being provided with the elastic component, make the motor fixed more firm, simultaneously, elastic component's benefit lies in can effectually preventing the wearing and tearing of motor, the life of extension motor.

Drawings

Fig. 1 is a schematic view of a front-end three-dimensional structure of the present invention.

Fig. 2 is a schematic view of the side three-dimensional structure of the present invention.

Fig. 3 is a perspective view of the fastening assembly.

Fig. 4 is a schematic view of an internal mounting perspective of the fastening assembly.

Fig. 5 is a partial perspective view of the fastening assembly.

Fig. 6 is a schematic exploded perspective view of the telescoping assembly.

In the figure: the device comprises a bearing plate 1, a chute 2, a lead screw 3, an angle adjusting mechanism 4, a vertical beam 4-1, a cross beam 4-2, a double-thread screw 4-3, a sleeve 4-4, a limiting block 4-5, a hinge rod 4-6, a motor barrel 5, a fastening assembly 6, a shell 6-1, an inner barrel 6-2, a worm 6-3, a first worm gear 6-4, a second worm gear 6-5, a first main gear 6-6, a second main gear 6-7, a first slave gear 6-8, a second slave gear 6-9, a third slave gear 6-10, a first conical gear 6-11, a second conical gear 6-12, a telescopic assembly 6-13, a screw 6-13-1, a threaded barrel 6-13-2, a positioning block 6-13-3, a limiting barrel 6-14, a positioning barrel 6-13, Fastening bolt 7, elastic component 8, rotation hand valve 9, supporting bench 10, fixing base 11.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings, which are only used for illustrating the technical solutions of the present invention and are not limited.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated; thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

With reference to fig. 1 to 6, a positioning workpiece for motor maintenance is illustrated, which includes a bearing plate 1, two sliding chutes 2 are symmetrically welded on the left side of the top end of the bearing plate 1, a screw rod 3 is arranged in the sliding chute 2, one end of the screw rod 3 is rotatably connected with the right wall of the inner side of the sliding chute 2, and the other end of the screw rod 3 rotatably penetrates through the left wall of the sliding chute 2; an angle adjusting mechanism 4 is arranged above the screw rod 3, the angle adjusting mechanism 4 comprises vertical beams 4-1, cross beams 4-2, double-thread screw rods 4-3, sleeves 4-4, limiting blocks 4-5 and hinge rods 4-6, threaded holes matched with the screw rod 3 are formed in the left side and the right side of the lower end of each vertical beam 4-1, the screw rod 3 can penetrate through the threaded holes in a rotating mode, the angle mechanism can be moved left and right by rotating the screw rod 3, when maintenance is needed, a motor can be conveniently placed into a motor positioning workpiece, the double-thread screw rods 4-3 are arranged on the upper side between the two vertical beams 4-1, and two ends of each double-thread screw rod 4-3 are rotatably connected with the inner walls of the two vertical beams 4-1 respectively; the two ends of the double-thread screw rod 4-3 are symmetrically provided with threads with opposite rotation directions, the threads at the two ends are respectively rotatably sleeved with a sleeve 4-4, the lower end of the sleeve 4-4 is welded with a limiting block 4-5, the lower end of the limiting block 4-5 is in sliding fit with a sliding groove 2 arranged at the upper end of a cross beam 4-2, the cross beam 4-2 is arranged at the lower side of the double-thread screw rod 4-3, and the two ends of the cross beam 4-2 are respectively welded with the inner walls of two vertical beams 4-1; the outer wall of the right side of the sleeve 4-4 is connected with a hinged rod 4-6 through a rotating shaft, the free end of the hinged rod 4-6 arranged on the rear side is rotatably connected with the upper side of the left end of the motor barrel through the rotating shaft, the free end of the hinged rod 4-6 arranged on the front side is rotatably connected with the lower side of the left end of the motor barrel 5 through the rotating shaft, and the motor in a maintenance state can be effectively rotated through the angle adjusting mechanism 4, so that a maintenance worker can conveniently maintain the motor in the motor barrel through the maintenance groove, the working efficiency of motor maintenance is effectively improved, and a large amount of time is saved; a fastening assembly 6 is arranged on the right side of the top end of the bearing plate 1, and the fastening assembly 6 comprises a shell 6-1, an inner cylinder 6-2, a worm 6-3, a first worm gear 6-4, a second worm gear 6-5, a first main gear 6-6, a second main gear 6-7, a first driven gear 6-8, a second driven gear 6-9, a third driven gear 6-10, a first conical gear 6-11, a second conical gear 6-12, a telescopic assembly 6-13 and a limiting cylinder 6-14; the shell 6-1 is of a columnar cavity structure, one end of the inner cylinder 6-2 penetrates through the center of the shell 6-1 and is welded with the bottom end of the inner side of the shell 6-1, and the diameter of the inner cylinder 6-2 is smaller than that of the shell 6-1; the upper end of the inner cylinder 6-2 on the inner side of the shell 6-1 is provided with a worm 6-3, one end of the worm 6-3 is rotatably connected with the rear side of the inner wall of the shell, the other end of the worm 6-3 is rotatably communicated with the rear wall of the shell, the front side and the rear side of the lower end of the worm 6-3 are respectively and symmetrically provided with a first worm wheel 6-4 and a second worm wheel 6-5, the first worm wheel 6-4 and the second worm wheel 6-5 are respectively and rotatably connected with the right side of the inner cavity of the shell through rotating shafts, and the left sides of the first worm wheel 6-4 and the second worm wheel 6-5 are respectively and concentrically connected with a first main gear 6-6 and a second; the first master gear 6-6 and the second master gear 6-7 are engaged with a first slave gear 6-8 in a matching manner, the outer ends of the first master gear 6-6 and the second master gear 6-7 are engaged with a second slave gear 6-9 and a third slave gear 6-10 in a matching manner, and the first slave gear 6-8, the second slave gear 6-9 and the third slave gear 6-10 are rotatably connected with the right wall of the inner side of the shell through rotating shafts; the left sides of the first driven gears 6-8, the second driven gears 6-9 and the third driven gears 6-10 are concentrically connected with first conical gears 6-11, the lower end tooth surfaces of the first conical gears 6-11 are engaged with second conical gears 6-12 in a mutually matched mode, telescopic components 6-13 are welded at the back of the first conical gears 6-11, the telescopic components 6-13 are in sliding fit with the inner chute 2 of the limiting cylinders 6-14, the free ends of the limiting cylinders 6-14 detachably penetrate through the side wall of the inner cylinder 6-2 and are arranged in the inner cavity of the inner cylinder 6-2, elastic members 8 (such as rubber pads and the like) are welded at the free ends of the inner cylinder 6-2, the fastening components 6 can be effectively and completely attached to the motor through the elastic members 8, and the motor is fixed more firmly, meanwhile, the elastic component has the advantages that the abrasion of the motor can be effectively prevented, and the service life of the motor is prolonged; the fastening assembly 6 can effectively and firmly fix the motor, so that the situation that the motor rotates to influence the continuous work of a worker when a maintenance worker works is avoided, even the maintenance worker is injured by the body when the motor rotates suddenly, meanwhile, the fastening assembly 6 has the advantages that the motor can effectively adapt to the motors with different specifications, the practicability of the device is improved, the situation that the motors with different specifications need to be replaced by different positioning devices is avoided, time and labor are wasted, and the material consumption is serious; the outer wall right-hand member center of shell is rotated through 11 upper ends of pivot fixing base and is connected, and the lower extreme of fixing base 11 passes through bolted connection with loading board 1. The motor that will wait to overhaul is fixed through motor section of thick bamboo 5 and fastening components 6, through control angle regulation structure, makes the motor section of thick bamboo rotate, because fastening components 6 are rotatable structure, consequently, can reach the motor in the maintenance and carry out pivoted effect, has saved the loaded down with trivial details step of fixing once more after maintenance personal readjusts the angle with the motor.

Preferably, lead screw 3 can directly carry out direct replacement with pneumatic telescopic link or electric telescopic handle, and simple structure avoids rotating lead screw 3 through the manpower and takes time hard.

Preferably, the upper end of the motor is provided with a threaded hole matched with the fastening bolt 7, the tail end of the fastening bolt 7 penetrates through the threaded hole to abut against the motor in the motor barrel, the motor arranged in the motor barrel can be effectively fixed through the fastening bolt 7, furthermore, the tail end of the fastening bolt 7 is welded with an elastic piece 8, and the damage of the fastening bolt 7 to the motor is avoided through the elastic piece 8.

Preferably, the free ends of the screw rod 3, the double-thread screw rod 4-3 and the worm 6-3 are all welded with a rotary hand valve 9, and the rotary hand valve 9 is arranged to enable maintenance personnel to rotate the device more conveniently.

Preferably, a supporting table 10 is arranged on the lower side of the motor cylinder and the positioning cylinder arranged at the outer end of the shell, an arc-shaped groove is arranged on the supporting table 10, and the arc-shaped groove is matched with the lower end face of the outer wall of the motor cylinder and the inner cylinder 6-2 in a rotating mode. Through being equipped with brace table 10, can effectually support fixedly to motor barrel, inner tube 6-2 in the work, prevent that motor barrel, inner tube 6-2 from being less than the gravity of motor to the holding power of motor and causing motor barrel, inner tube 6-2 to sink downwards, reduced the utility model discloses a life.

Preferably, the telescopic assembly 6-13 comprises a screw rod 6-13-1, a threaded cylinder 6-13-2 and a positioning block 6-13-3, the screw rod 6-13-1 is concentrically welded to the back of the second conical gear 6-12, the screw rod 6-13-1 and the threaded cylinder 6-13-2 are rotatably assembled, the positioning block 6-13-3 is arranged at the symmetrical side end of the threaded cylinder 6-13-2, and the positioning block 6-13-3 is matched with the sliding chute 2 in the inner cylinder 6-2. When the second conical gear 6-12 rotates, the threaded cylinder 6-13-2 is lifted or lowered due to the common limitation of the chute 2 in the limiting cylinder 6-14 and the positioning block 6-13-3 on the threaded cylinder 6-13-2, and further the motor in the inner cavity of the inner cylinder 6-2 is effectively fixed.

The working process of the device is as follows: when in use, firstly, the rotating hand valve 9 on the screw rod 3 is rotated, the angle adjusting mechanism 4 arranged on the screw rod 3 and the motor cylinder are moved left and right, when the motor is placed in a proper position, the rotating knob on the screw rod 3 is continuously rotated, the other end of the motor in the motor cylinder is placed in the inner cylinder 6-2, the rotating valve on the worm 6-3 is rotated, the worm 6-3 drives the lower end turbine to effectively rotate, the coaxial first main gear 6-6 and second main gear 6-7 are further rotated, the first main gear 6-6 and second main gear 6-7 further drive the first slave gear 6-8, the second slave gear 6-9, the third slave gear 6-10, the first slave gear 6-8, the second slave gear 6-9 and the first conical gear 6-11 on the third slave gear 6-10 to rotate, the first conical gear 6-11 further drives the second conical gear 6-12 to effectively rotate, finally, a telescopic component 6-13 arranged at the lower end of the second conical gear 6-12 performs telescopic motion under the limitation of a limiting cylinder 6-14, further the motor in the inner cylinder 6-2 is fastened, and a fastening bolt 7 is screwed to fix the motor in the motor cylinder; then, according to the maintenance requirement of a maintenance person, the motor cylinder, the inner cylinder 6-2 and the shell are rotated through the rotating hand valve 9 on the double-thread screw 4-3, and therefore it is guaranteed that the motors in the motor cylinder and the inner cylinder 6-2 rotate to the positions required by the maintenance person.

Although the present invention has been described in detail with reference to the foregoing examples, it will be apparent to those skilled in the art that various changes and modifications can be made in the embodiments described above, or equivalent changes and modifications can be made to some of the technical features of the embodiments described above, and any changes, equivalents, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. A positioning workpiece for motor maintenance comprises a bearing plate and is characterized in that two sliding chutes are symmetrically and fixedly connected to the left side of the top end of the bearing plate, one end of a lead screw is rotatably connected with the right wall of the inner side of each sliding chute, and the other end of the lead screw is rotatably communicated with the left wall of each sliding chute; an angle adjusting mechanism is arranged above the lead screw, the lower end of the angle adjusting mechanism penetrates through the left side and the right side and is provided with a threaded hole matched with the lead screw, and the lead screw can rotatably penetrate through the threaded hole; the right end of the angle adjusting mechanism is hinged with the left end of the motor barrel; the right side of the top end of the bearing plate is provided with a fastening assembly, the center of the right end of the fastening assembly is rotatably connected with the upper end of the fixing seat, and the lower end of the fixing seat is fixedly connected with the bearing plate.

2. The positioning workpiece for motor maintenance according to claim 1, wherein: the lead screw can be directly replaced by a pneumatic telescopic rod or an electric telescopic rod.

3. The positioning workpiece for motor maintenance according to claim 1, wherein: the angle adjusting mechanism comprises vertical beams, a cross beam, double-thread screw rods, sleeves, limiting blocks and hinge rods, wherein the left side and the right side of the lower end of each vertical beam are provided with threaded holes matched with the screw rods, the screw rods can rotatably penetrate through the threaded holes, the double-thread screw rods are arranged on the upper side between the two vertical beams, and two ends of each double-thread screw rod are respectively rotatably connected with the inner walls of the two vertical beams; the two ends of the double-thread screw are symmetrically provided with threads with opposite rotation directions, the threads at the two ends are respectively rotatably sleeved with a sleeve, the lower end of the sleeve is fixedly connected with a limiting block, the lower end of the limiting block is in sliding fit with a sliding groove arranged at the upper end of a cross beam, the cross beam is arranged at the lower side of the double-thread screw, and the two ends of the cross beam are respectively fixedly connected with the inner walls of the two vertical beams; the outer wall of the right side of the sleeve is rotatably connected with a hinged rod, and the free ends of the hinged rods arranged on the front side and the rear side are rotatably connected with the lower side of the left end and the upper side of the left end of the motor barrel.

4. The positioning workpiece for motor maintenance according to claim 1, wherein: the fastening assembly comprises a shell, an inner cylinder, a worm, a first worm wheel, a second worm wheel, a first main gear, a second main gear, a first driven gear, a second driven gear, a third driven gear, a first conical gear, a second conical gear, a telescopic assembly and a limiting cylinder; the shell is of a columnar cavity structure, one end of the inner cylinder penetrates through the center of the shell and is fixedly connected with the bottom end of the inner side of the shell, and the diameter of the inner cylinder is smaller than that of the shell; the upper end of the inner cylinder on the inner side of the shell is provided with a worm, one end of the worm is rotatably connected with the rear side of the inner wall of the shell, the other end of the worm can rotatably penetrate through the rear wall of the shell, the front side and the rear side of the lower end of the worm are respectively and symmetrically provided with a first worm wheel and a second worm wheel, the first worm wheel and the second worm wheel are respectively and rotatably connected with the right side of the inner cavity of the shell through rotating shafts, and the left sides of the first worm wheel and the second worm wheel are respectively and concentrically connected with a first main; the first master gear and the second master gear are meshed with a first slave gear in a matched manner, the outer side ends of the first master gear and the second master gear are meshed with a second slave gear and a third slave gear in a matched manner, and the first slave gear, the second slave gear and the third slave gear are rotatably connected with the right wall of the inner side of the shell through rotating shafts; the left sides of the first driven gear, the second driven gear and the third driven gear are all concentrically connected with a first conical gear, the lower end tooth surface of the first conical gear is meshed with a second conical gear in a mutually matched mode, a telescopic assembly is welded to the back of the first conical gear, the telescopic assembly is matched with the inner chute of the limiting cylinder in a sliding mode, and the free end of the limiting cylinder is detachably communicated with the side wall of the inner cylinder and is arranged in the inner cavity of the inner cylinder.

5. The positioning workpiece for motor maintenance according to claim 4, wherein: the telescopic assembly comprises a screw rod, a threaded cylinder and a positioning block, the screw rod is fixedly connected with the back of the second conical gear in a concentric mode, the screw rod and the threaded cylinder are rotatably assembled, the positioning block is arranged at the symmetrical side end of the threaded cylinder, and the positioning block is matched with a sliding groove in the inner cylinder.

6. The positioning workpiece for motor maintenance according to claim 1, wherein: the upper end of the motor is provided with a threaded hole matched with the fastening bolt, and the tail end of the fastening bolt penetrates through the threaded hole to abut against the motor in the motor barrel.

7. The positioning workpiece for motor maintenance according to claim 4, wherein: elastic parts are fixedly connected to the free end of the inner cylinder and the tail end of the fastening bolt.

8. The positioning workpiece for motor maintenance according to claim 1, wherein: and the free ends of the screw rod, the double-thread screw rod and the worm are all welded with a rotary hand valve.

9. The positioning workpiece for motor maintenance according to claim 1, wherein: a supporting table is arranged on the lower side of the motor cylinder and the positioning cylinder arranged at the outer end of the shell, an arc-shaped groove is arranged on the supporting table, and the arc-shaped groove is matched with the lower end faces of the outer walls of the motor cylinder and the inner cylinder in a rotating mode.

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