CN217572728U - Auxiliary device for repairing gearbox - Google Patents

Abstract

The utility model provides an auxiliary device for gearbox restoration, it is including the base that is used for vertical placing the gear shaft, set up in the base and be used for keeping the vertical centre gripping subassembly of gear shaft and set up in the base draw the clamp mechanism, draw the clamp mechanism to include many vertical settings and lower extreme and rotate the many horizontal telescopic links of connecting in the vertical telescopic link of base, one end fixed connection in vertical telescopic link upper end and be used for driving the drive assembly that many vertical telescopic links are flexible simultaneously, many three and circumference equipartitions in the base are no less than to vertical telescopic link, the other end butt of horizontal telescopic link is in the radial side of gear shaft to the butt is in the upside of gear or bearing. The utility model discloses have and improve the mode that utilizes local to strike among the prior art and when gear and bearing assembly in the gear shaft, have the effect that easily causes the problem of gear, bearing or gear shaft damage.

Description

Auxiliary device for repairing gearbox

Technical Field

The utility model relates to a gearbox technical field especially relates to a gearbox is restoreed and is used auxiliary device.

Background

The gear box is a device used on automobiles, tractors, ships, machine tools and various machines, aims to change the rotating speed ratio and the moving direction, and is used for changing the torque, the rotating speed and the moving direction transmitted from a driving shaft to a driven shaft according to different working conditions; generally, the gearbox comprises a gear shaft, a plurality of gears and a plurality of bearings, wherein part of the gears and/or the bearings are in interference fit with the gear shaft, the gears are in meshing transmission, and the gears are different in size.

In the prior art, a part of gears are connected with a gear shaft and the gear shaft is connected with a bearing in an interference fit mode, and in a long-term use process, parts of the whole box body need to be detached due to abrasion of any parts in the gear box and can be reassembled for use after being repaired. In a steam repair plant, particularly a small and medium-sized steam repair plant, when a repaired gear box is assembled and a gear and a bearing are assembled on a gear shaft, one end of the gear shaft is usually placed on a cushion block to realize the vertical direction of the gear shaft, then the gear or the inner ring of the bearing is locally knocked by utilizing a mode of combining a hammer and a partition plate to realize the installation of the gear or the inner ring of the bearing, and so on, and the installation of a plurality of gears and bearings can be completed. When the diameter of one end of the gear shaft is larger, the vertical direction of the gear shaft can be directly realized; when gear shaft one end diameter is less, need adopt lathe or other auxiliary member to push up in the mode of gear shaft other end just can keep the vertical of gear shaft, the purchase of lathe forms economic pressure to the vapour repair factory.

When the gear or the bearing is installed in the mode, the bearing or the gear is locally stressed when the gear or the bearing is installed in the local knocking mode, and the surface of the gear, the bearing or the gear shaft is easily damaged.

SUMMERY OF THE UTILITY MODEL

To exist not enough among the prior art, the utility model provides a gearbox auxiliary device for restoration, it can improve among the prior art and utilize the mode of local striking to assemble gear and bearing when the gear shaft, has the problem that easily causes gear, bearing or gear shaft to damage.

According to the utility model discloses an embodiment, auxiliary device for gearbox restoration, it is including the base that is used for vertical placing the gear shaft, set up in the base and be used for keeping the vertical centre gripping subassembly of gear shaft and set up in the clamp mechanism that draws of base, draw and press from both sides the mechanism and include many vertical settings and lower extreme rotate the many horizontal telescopic links of connecting in the vertical telescopic link of base, one end fixed connection in vertical telescopic link upper end and be used for driving many vertical telescopic link drive assembly that stretches out and draws back simultaneously, many three and circumference equipartition in the base are no less than to vertical telescopic link, the other end butt of horizontal telescopic link is in the radial side of gear shaft to the butt is in the upside of gear or bearing.

Preferably, the vertical telescopic rod comprises a sleeve, a screw rod and a fixing rod for preventing the screw rod from rotating, the sleeve and the screw rod are both vertically arranged, the lower end of the sleeve is T-shaped and is rotatably connected to the base, the sleeve is provided with a threaded hole in a penetrating manner, and the driving assembly is used for driving the sleeve to rotate; the lower extreme threaded connection of screw rod is in the sleeve pipe, and the upper end is fixed in horizontal telescopic link, the dovetail has been seted up along length direction to the screw rod, the one end of dead lever is fixed in the base, other end adaptation and sliding connection in dovetail.

Preferably, the horizontal telescopic link includes loop bar, slide bar and releases the spring, the one end of loop bar is fixed in the screw rod, and the shoulder hole has been seted up to the other end, the one end of slide bar is "T" form and sliding connection in the loop bar, other end butt in the radial side of gear shaft to the butt in the upside of gear or bearing, it sets up in the shoulder hole of loop bar to release the spring, and both ends are fixed in loop bar and slide bar respectively.

Preferably, the driving assembly comprises a driving motor, a driving gear coaxially fixed at the driving end of the driving motor, a gear ring meshed with the driving gear, and a plurality of driven gears meshed with the gear ring, and the plurality of driven gears are respectively fixed on the plurality of sleeves.

Preferably, the base includes many stabilizer blades, is fixed in the base plate of many stabilizer blades simultaneously and is fixed in the basal disc of base plate upside, the vertical placing in basal disc of gear shaft.

Preferably, the diameter of the basal disc is smaller than the diameter of the base plate, the sleeve pipe is rotatably connected to the base plate and is smaller than the basal disc in height, the base plate penetrates through a through hole formed in a threaded hole of the communicating sleeve pipe, the diameter of the through hole is larger than the diameter of the screw rod, and the length of the screw rod is smaller than the distance from the upper end of the sleeve pipe to the ground.

Preferably, the upper side of the base is provided with a clamping hole for the end part of the gear shaft to extend into; the centre gripping subassembly includes a plurality of along horizontal direction sliding connection in the grip block of base, be used for driving a plurality of grip blocks and slide simultaneously and centre gripping in the driving piece of gear shaft, make the grip block centre gripping all the time in the locating part of gear shaft and a plurality of reset that are used for driving grip block reverse slip, it is a plurality of the center line equipartition that the grip block is no less than three and uses the centre gripping hole is on the base, the grip block centre gripping is the cambered surface in one side of gear shaft.

Preferably, one side of the clamping block is provided with an inclined plane; the driving piece comprises a driving ring which is rotationally connected with the base by taking the central line of the clamping hole as an axis and a handle for driving the driving ring to rotate; the driving ring is provided with a plurality of driving holes for the clamping blocks to extend into, and the hole wall of each driving hole is in contact with the inclined surface and enables the clamping blocks to horizontally slide towards the center line of each clamping hole; one end of the handle is fixed on the driving ring, and the other end extends out of the base and rotates along with the rotation of the driving ring.

Preferably, the locating part is including the limiting plate that is fixed in the base and the gag lever post of threaded connection in limiting plate, a plurality of screws have been seted up to the limiting plate, and the screw hole is to the slope, the lower extreme butt of gag lever post in the lateral wall of handle, the lateral wall be with handle rotation direction opposite side.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the clamping device is characterized in that a base plate provided with a clamping hole is arranged, a plurality of clamping blocks which can be driven by a rotating driving ring to slide are arranged on the clamping plate, so that the gear shaft is vertically placed in the clamping hole, and the clamping effect on the gear shaft is formed by the plurality of clamping blocks, so that the plurality of clamping blocks keep a clamping state on the gear shaft under the indirect limiting effect of a limiting piece, and the vertical direction of the gear shaft is kept; furthermore, by arranging the vertical telescopic rod, the transverse telescopic rod and the driving component for driving the vertical telescopic rod to stretch vertically, under the driving action of the driving component, the transverse telescopic rod abutted against the upper side of the gear or the bearing moves downwards under the action of shortening the vertical telescopic rod, so that the gear or the bearing is driven to move downwards, and the installation of the gear or the bearing is completed; in the whole installation process, an installer only needs to clamp the gear shaft through the clamping assembly and place a gear or a bearing to be installed at the top end of the gear shaft, and compared with the mode that a lathe or other auxiliary parts are needed to keep the gear shaft static in the prior art, the method is relatively low in danger and relatively more convenient to operate; meanwhile, at least three transverse telescopic rods act on the gear or the bearing at the same time, and the acting force is average, so that compared with the prior art that the gear and the bearing are assembled on the gear shaft in a local knocking mode, the problem that the gear, the bearing or the gear shaft is easy to damage is solved;

2. in-process through many horizontal telescopic links with gear or the downward pulling of axial, many slide bars butt in the gear shaft all the time to under the combined action of a plurality of centre gripping subassemblies, make the gear shaft keep vertical stability's effect better.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic view of a partial cross-sectional structure of an embodiment of the present invention;

fig. 3 is a schematic view of a partial cross-sectional structure of a base plate according to an embodiment of the present invention;

FIG. 4 is an enlarged view of the portion A of FIG. 2;

FIG. 5 is an enlarged schematic view of the portion B of FIG. 2;

fig. 6 is an enlarged schematic view of the portion C in fig. 2.

In the above drawings: 1. a gear shaft; 2. a base; 21. a support leg; 22. a substrate; 221. a through hole; 23. a base plate; 231. a clamping hole; 232. a ring groove; 233. a chute; 234. a rotating groove; 3. a clamping assembly; 31. a clamping block; 311. a bevel; 32. a drive member; 321. a drive ring; 3211. a drive aperture; 322. a handle; 33. a stopper; 331. a limiting plate; 332. a limiting rod; 34. a reset member; 4. a vertical telescopic rod; 41. a sleeve; 42. a screw; 421. a dovetail groove; 43. fixing the rod; 5. a transverse telescopic rod; 51. a loop bar; 52. a slide bar; 53. a push-out spring; 6. a drive assembly; 61. a drive motor; 62. a driving gear; 63. a toothed ring; 64. a driven gear.

Detailed Description

The present invention will be further described with reference to fig. 1-6.

Referring to fig. 1 and 2, an embodiment of the present invention provides an auxiliary device for gearbox repair, including a base 2, a clamping assembly 3 and a pulling and clamping mechanism, wherein the base 2 is placed on the ground for vertically placing a gear shaft 1, so as to support the gear shaft 1; the clamping assembly 3 is arranged on the base 2 to clamp the gear shaft 1 vertically placed on the base 2 and keep the gear shaft 1 vertical; the pulling and clamping mechanism is used for pulling and clamping the gear or the bearing placed at the top end of the gear shaft 1, so that the gear or the bearing slides downwards relative to the gear shaft 1, and the installation of the gear or the bearing is completed.

The pulling and clamping mechanism comprises a plurality of vertical telescopic rods 4, a plurality of transverse telescopic rods 5 and a driving assembly 6; the number of the vertical telescopic rods 4 is not less than three, and the vertical telescopic rods are circumferentially and uniformly distributed on the base 2 and can be 3, 4 or 5, wherein the vertical telescopic rods 4 are vertically arranged, and the lower ends of the vertical telescopic rods are rotatably connected to the base 2; the quantity of many horizontal telescopic links 5 equals with the quantity of many vertical telescopic links 4, and many horizontal telescopic links 5 transversely are fixed in the upper end of vertical telescopic link 4 one by one, and the other end butt of horizontal telescopic link 5 is in the radial side of gear shaft 1 to the butt is in the upside of gear or bearing. The driving assembly 6 is used for driving the plurality of vertical telescopic rods 4 to be shortened or lengthened simultaneously.

When the clamping device is used, the gear shaft 1 is vertically placed on the base 2, the clamping component 3 is used for clamping the lower end of the gear shaft 1 to keep the gear shaft 1 vertical, and the problem that in the prior art, a lathe and other machine tools are possibly needed to clamp the gear shaft 1 to keep the economic pressure caused by the vertical direction of the gear shaft 1 is solved; then, a gear or a bearing to be installed is placed at the upper end of the gear shaft 1; then, the driving assembly 6 drives the vertical telescopic rod 4 to extend until the horizontal telescopic rod 5 and the gear (or the bearing) are positioned on the same plane; when the tip butt of a plurality of horizontal telescopic link 5 was in the upside of gear or bearing, can shorten through many vertical telescopic link 4 of drive assembly 6 drive, drive horizontal telescopic link 5 downstream to drive gear or bearing and descend required height. In the whole installation process, an installer only needs to clamp the gear shaft 1 through the clamping assembly 3 and place a gear or a bearing to be installed at the top end of the gear shaft 1, and compared with the mode that a lathe or other auxiliary parts are needed to keep the gear shaft 1 static in the prior art, the method is relatively low in danger and relatively more convenient to operate; simultaneously, be no less than three horizontal telescopic link 5 simultaneous action gear or bearing, and the effort is average, when needing to utilize the mode of local strike with gear and bearing assembly in the gear shaft among the prior art, has improved and has had the problem that exists and easily cause gear, bearing or gear shaft damage.

Referring to fig. 2 and 3, in particular, the base 2 includes a plurality of support legs 21, a base plate 22 and a base plate 23, the support legs 21 stand on the ground, and the base plate 22 is fixed on the plurality of support legs 21 at the same time; the substrate 22 is disc-shaped, and a plurality of through holes 221 are formed through the substrate 22, and the plurality of through holes 221 are not less than three and are circumferentially and uniformly distributed on the substrate 22 along the central axis. The base plate 23 is fixed on the upper side of the base plate 22, the diameter of the base plate 23 is smaller than that of the position of the through hole 221 on the base plate 22, a clamping hole 231 is formed in the upper side of the base plate 23, the clamping hole 231 is a circular hole, and the central axis of the clamping hole and the central axis of the base plate 23 are axial lines, so that the end portion of the gear shaft 1 can extend into the clamping hole.

The base disc 23 is also internally provided with a ring groove 232 taking the central axis of the base disc 23 as the axial lead, the hole wall of the clamping hole 231 is circumferentially provided with a plurality of sliding grooves 233 communicated with the ring groove 232, and the plurality of sliding grooves 233 are not less than three and are uniformly distributed on the base disc 23; a rotating groove 234 communicating with the sliding groove 233 is further opened at an outer side of the base plate 23.

Referring to fig. 2 to 5, the clamping assembly 3 includes a plurality of clamping blocks 31, a driving member 32, a limiting member 33, and a plurality of resetting members 34. The clamping blocks 31 are not less than three and are uniformly distributed on the base plate 23 by the central lines of the clamping holes 231, the number of the clamping blocks is equal to that of the sliding grooves 233, one ends of the clamping blocks 31 are matched and horizontally connected with the sliding grooves 233 in a sliding manner, the other ends of the clamping blocks extend out of the clamping holes 231, and the side faces are cambered surfaces so as to be matched with the outer cambered surfaces of the gear shaft 1; one end of the clamping block 31, which extends towards the clamping hole 231, is in a T shape, and one side of the other end is further provided with an inclined surface 311.

The driving member 32 for driving the plurality of clamping blocks 31 while sliding toward the central axis of the clamping hole 231 includes a driving ring 321 and a handle 322; the driving ring 321 is adapted and slidably connected to the annular groove 232, the driving ring 321 is provided with a plurality of driving holes 3211 for the plurality of clamping blocks 31 to extend into one by one, and one hole wall of the driving hole 3211 can contact the inclined surface 311, so that the clamping blocks 31 can slide. The handle 322 has one end fixed to the drive ring 321 and the other end protruding from the rotation groove 234 and rotates in the rotation groove 234 with the rotation of the drive ring 321.

The position limiting member 33 includes a position limiting plate 331 and a position limiting rod 332, the position limiting plate 331 is fixed on the outer side of the base plate 23 and is located on the upper side of the rotating groove 234, a plurality of screw holes are spaced on the position limiting plate 331, and the holes of the screw holes are inclined. The limiting rod 332 is formed with an external thread to be connected to the screw hole of the limiting plate 331 by a thread, and the lower end of the limiting rod 332 abuts against the sidewall of the handle 322, which is the side opposite to the rotation direction of the handle 322.

After the driving ring 321 is rotated by applying a force to the handle 322, and the plurality of clamping blocks 31 are slid and clamped at the lower end of the gear shaft 1, the limiting rod 332 is screwed to the limiting plate 331, and the limiting rod 332 abuts against the sidewall of the handle 322 to prevent the reverse rotation of the driving ring 321 and the reverse sliding of the clamping blocks 31, so that the clamping blocks 31 are always clamped at the gear shaft 1.

In the embodiment of the present invention, the size of the sliding groove 233 communicating with one end of the clamping hole 231 is larger than the other end, so that the T-shaped end of the clamping block 31 can be recovered. The reset piece 34 is a spring sleeved on the clamping block 31, and two ends of the spring are respectively fixed on the T-shaped end of the clamping block 31 and the groove bottom of the sliding groove 233. When the clamping block 31 is clamped on the gear shaft 1, the reset piece 34 extends, and after the limiting action of the limiting rod 332 on the handle 322 is cancelled, the clamping block 31 slides reversely under the resilience action of the reset piece 34.

Referring to fig. 1, 2 and 6, the vertical telescopic rod 4 comprises a sleeve 41, a screw rod 42 and a fixing rod 43, wherein the sleeve 41 and the screw rod 42 are vertical; wherein, the lower end of the sleeve 41 is in a T shape and is rotatably connected to the substrate 22, and the sleeve 41 is provided with a threaded hole in a penetrating way, and the threaded hole is communicated with the through hole 221; the lower end of the screw rod 42 is screwed to the bushing 41 and has a diameter smaller than that of the through hole 221 so that a dovetail groove 421 is formed outside the screw rod 42 in the longitudinal direction through the base plate 22. One end of the fixing rod 43 is fixed to the base plate 23, and the other end is fitted and slidably connected to the dovetail groove 421.

The transverse telescopic rod 5 comprises a loop bar 51, a slide bar 52 and a push-out spring 53, one end of the loop bar 51 is fixed at the upper end of the screw rod 42, and the other end is provided with a stepped hole; one end of the sliding rod 52 is in a T shape and is connected with the stepped hole of the loop bar 51 in a sliding way, and the other end is abutted against the radial side of the gear shaft 1 and the upper side of the gear or the bearing; the push-out spring 53 is disposed in the stepped hole of the loop bar 51, and both ends of the push-out spring 53 are fixed to the loop bar 51 and the slide bar 52, respectively, and when the push-out spring 53 is in a natural state, the slide bar 52 is pushed out, so that the transverse expansion link 5 is in an extended state.

The driving assembly 6 comprises a driving motor 61, a driving gear 62, a gear ring 63 and a plurality of driven gears 64; the driving motor 61 is fixed on the substrate 22, and the driving gear 62 is coaxially fixed on the output shaft of the driving motor 61 and is rotatably connected to the substrate 22; the toothed ring 63 is provided with external teeth to be meshed with the driving gear 62, a support rod supported on the base plate 22 is fixed on the lower side of the toothed ring 63, and the lower end of the support rod is matched and connected in a limiting ring groove of the base plate 22 in a sliding mode to fix the toothed ring 63 and keep the horizontal height of the toothed ring 63. The driven gears 64 are coaxially fixed to the sleeves 41 one by one and engaged with the internal teeth of the ring gear 63.

After the vertical direction of the gear shaft 1 is maintained by the clamping assembly 3, the gear or the bearing is sleeved on the gear shaft 1, and the sliding rod 52 abuts against the upper side of the gear or the bearing; then, the driving motor 61 is started, the driving gear 62, the toothed ring 63 and the plurality of driven gears 64 sequentially rotate to drive the plurality of sleeves 41 to rotate, so that the screw rod 42 moves downwards under the limiting action of the fixing rod 43 to drive the transverse telescopic rod 5 to move downwards, and the gears or the bearings are driven to fall to the required height.

In the embodiment of the present invention, the height of the sleeve 41 is less than the height of the base plate 23, and the length of the screw rod 42 is less than the distance from the upper end of the sleeve 41 to the ground, so as to ensure that the gear or the bearing reaches the lower end of the gear shaft 1 as much as possible under the pulling of the transverse telescopic rod 5.

In another embodiment, the transverse expansion link 5 may be inclined such that one end of the sliding rod 52 is lower than the loop bar 51, while an inclined strut is provided between the transverse expansion link 5 and the screw rod 42 to ensure that the gear or the bearing is smoothly pressed down by the transverse expansion link 5. Furthermore, the number of the vertical telescopic rods 4 and the number of corresponding parts can be increased according to the friction force between the gear or the bearing and the gear shaft 1, so that the phenomenon of wire sliding between the sleeve 41 and the screw rod 42 is prevented, and the smooth pressing of the gear or the bearing is ensured.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (9)

1. An auxiliary device for repairing a gearbox is characterized in that: including be used for vertical base (2) of placing gear shaft (1), set up in base (2) and be used for keeping vertical centre gripping subassembly (3) of gear shaft (1) and set up in pulling of base (2) and press from both sides the mechanism, it includes many vertical settings and lower extreme rotation and connects in many horizontal telescopic link (5) of vertical telescopic link (4) upper end, one end fixed connection in vertical telescopic link (4) and be used for driving many vertical telescopic link (4) drive assembly (6) that stretch out and draw back simultaneously, many vertical telescopic link (4) are no less than three and circumference equipartitions in base (2), the other end butt of horizontal telescopic link (5) is in the radial side of gear shaft (1) to the butt is in the upside of gear or bearing.

2. The auxiliary device for repairing a transmission according to claim 1, wherein: the vertical telescopic rod (4) comprises a sleeve (41), a screw rod (42) and a fixing rod (43) for preventing the screw rod (42) from rotating, the sleeve (41) and the screw rod (42) are both vertically arranged, the lower end of the sleeve (41) is T-shaped and is rotatably connected to the base (2), the sleeve (41) penetrates through a threaded hole, and the driving assembly (6) is used for driving the sleeve (41) to rotate; the lower end of the screw rod (42) is in threaded connection with the sleeve (41), the upper end of the screw rod is fixed on the transverse telescopic rod (5), the screw rod (42) is provided with a dovetail groove (421) along the length direction, one end of the fixing rod (43) is fixed on the base (2), and the other end of the fixing rod is matched and connected with the dovetail groove (421) in a sliding mode.

3. An auxiliary device for repairing a transmission according to claim 2, wherein: horizontal telescopic link (5) are including loop bar (51), slide bar (52) and release spring (53), the one end of loop bar (51) is fixed in screw rod (42), and the shoulder hole has been seted up to the other end, the one end of slide bar (52) is "T" form and sliding connection in loop bar (51), and the other end butt is in the radial side of gear shaft (1) to the butt in the upside of gear or bearing, release spring (53) and set up in the shoulder hole of loop bar (51), and both ends are fixed in loop bar (51) and slide bar (52) respectively.

4. An auxiliary device for repairing a transmission according to claim 2, wherein: the driving assembly (6) comprises a driving motor (61), a driving gear (62) coaxially fixed at the driving end of the driving motor (61), a gear ring (63) meshed with the driving gear (62) and a plurality of driven gears (64) meshed with the gear ring (63), wherein the driven gears (64) are respectively fixed on the sleeves (41).

5. The auxiliary device for repairing a transmission according to claim 2, wherein: the base (2) comprises a plurality of support legs (21), a base plate (22) fixed on the support legs (21) and a base plate (23) fixed on the upper side of the base plate (22), and the gear shaft (1) is vertically placed on the base plate (23).

6. An auxiliary device for repairing a transmission according to claim 5, wherein: the diameter of the base plate (23) is smaller than that of the base plate (22), the sleeve (41) is rotatably connected to the base plate (22) and is smaller than the base plate (23), the base plate (22) penetrates through a through hole (221) provided with a threaded hole communicated with the sleeve (41), the diameter of the through hole (221) is larger than that of the screw rod (42), and the length of the screw rod (42) is smaller than the distance from the upper end of the sleeve (41) to the ground.

7. The auxiliary device for repairing a transmission according to claim 1, wherein: a clamping hole (231) for the end part of the gear shaft (1) to extend into is formed in the upper side of the base (2); the clamping assembly (3) comprises a plurality of clamping blocks (31) which are connected to the base (2) in a sliding mode in the horizontal direction, a driving piece (32) which is used for driving the plurality of clamping blocks (31) to slide simultaneously and clamp the gear shaft (1), a limiting piece (33) which is used for enabling the clamping blocks (31) to always clamp the gear shaft (1), and a reset piece (34) which is used for driving the clamping blocks (31) to slide reversely, the clamping blocks (31) are not less than three, and are evenly distributed on the base (2) through the center lines of the clamping holes (231), and one side, clamped on the gear shaft (1), of each clamping block (31) is an arc surface.

8. The auxiliary device for repairing a transmission according to claim 7, wherein: an inclined surface (311) is arranged on one side of the clamping block (31); the driving piece (32) comprises a driving ring (321) which is rotationally connected with the base (2) by taking the central line of the clamping hole (231) as an axis and a handle (322) for driving the driving ring (321) to rotate; the driving ring (321) is provided with a plurality of driving holes (3211) for the clamping blocks (31) to extend into, and the hole wall of each driving hole (3211) is in contact with the inclined surface (311) and enables the clamping blocks (31) to horizontally slide towards the center line of the clamping hole (231); one end of the handle (322) is fixed on the driving ring (321), and the other end extends out of the base (2) and rotates along with the rotation of the driving ring (321).

9. The auxiliary device for repairing a transmission according to claim 7, wherein: the limiting part (33) comprises a limiting plate (331) fixed on the base (2) and a limiting rod (332) in threaded connection with the limiting plate (331), the limiting plate (331) is provided with a plurality of screw holes, the screw holes are inclined, the lower end of the limiting rod (332) is abutted to the side wall of the handle (322), and the side wall is the side opposite to the rotation direction of the handle (322).

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