CN214118909U

CN214118909U - Eccentric type fixing and locking device

Info

Publication number: CN214118909U
Application number: CN202021517614.4U
Authority: CN
Inventors: 黄泽鹏; 黄杰
Original assignee: Zhuhai Junxing Electromechanical Co ltd
Current assignee: Zhuhai Junxing Electromechanical Co ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-09-03
Anticipated expiration: 2030-07-28

Abstract

The utility model provides an eccentric type locking device, place the end cover in the counter bore of a sleeve clamp, the lateral wall of the sleeve clamp is provided with a line cutting groove to make the sleeve clamp easy to deform, therefore, the pneumatic sleeve clamp seat is started to apply force to the sleeve clamp to make the sleeve clamp deform and compress, the edge of the counter bore can compress the end cover, the threaded end of a first threaded fastener and an eccentric fixing piece clamp together and pass through the mesoporous shaft sleeve of the ferrule, a torque wrench passes through a third through hole, the eccentric fixing piece is rotated along the direction of the contact point of the eccentric fixing piece and the shaft sleeve, the fixed eccentric piece can not continue to rotate along the hinge point because of being close to the shaft sleeve, at the moment, the fixed eccentric piece extrudes the shaft and transmits the acting force of the torque wrench to the shaft sleeve, the shaft sleeve rotates along the central axis, the shaft sleeve is suspended and screwed into the upper end cover, the locking of the shaft sleeve is completed, the mode is applicable to the shaft sleeve of various external diameter specifications, then the shaft sleeve can be loosened by reversely suspending and screwing the eccentric fixing piece, easy to disassemble.

Description

Eccentric type fixing and locking device

Technical Field

The utility model belongs to the technical field of the reduction gear assembly, concretely relates to eccentric formula solid locking device.

Background

The end cover and the axle sleeve of split type reduction gear are mostly the solid of revolution, threaded connection is passed through at the bottom of axle sleeve to the top of end cover, the viscose need be paintd in screw thread department simultaneously, if directly lock the axle sleeve through the spanner and come the axle sleeve to hang the mode of twisting to the end cover upper end and accomplish being connected of end cover and axle sleeve, the axle sleeve surface probably leads to the surface to be crushed or the scratch because of the direct contact with the tooth of spanner, lead to axle sleeve surface quality unqualified, prior art also has and locates the axle sleeve outside through the one-way bearing cover, it is rotatory to drive the axle sleeve through the mode of hanging wrong one-way bearing, make its threaded connection in the upper end of end cover, because of one-way bearing is the standard component, there is higher requirement to complex size of a dimension and dimensional accuracy, the axle sleeve of unconventional size does not have the one-way bearing of suitable specification, consequently, there is the unable situation that uses of one-way bearing formula solid lock tool.

SUMMERY OF THE UTILITY MODEL

Therefore, in order to solve the above problems, an object of the present invention is to provide an eccentric locking device, including an end cover fixing module and a shaft sleeve fixing module, where the end cover fixing module includes a collet chuck and a pneumatic collet chuck, the collet chuck is located inside the pneumatic collet chuck, the pneumatic collet chuck is used to fix the collet chuck, a first hole is vertically formed in the middle of the collet chuck, a linear slot is vertically formed in a sidewall of the collet chuck, the linear slot penetrates through the first hole and behind the collet chuck, a top of the linear slot extends to a top of the collet chuck, a counter bore for accommodating an end cover is formed in the top of the collet chuck, and a diameter of the counter bore is greater than a diameter of the first hole;

the shaft sleeve fixing module comprises a ferrule, an eccentric fixing piece and a first threaded fastener, a plurality of second through holes for the first threaded fastener to penetrate through are formed in the left end of the ferrule, the second through holes are in threaded fit with the first threaded fastener, the eccentric fixing piece is hinged to the ferrule, the eccentric fixing piece can rotate on the horizontal plane by taking the hinged point as a rotating shaft, and a third through hole used for being matched with the output end of the torque wrench is formed in the side face of the eccentric fixing piece.

Further, the shaft sleeve fixing module further comprises a second threaded fastener, the eccentric fixing piece is connected with the second threaded fastener through a spring, and the second threaded fastener is in threaded connection with the ferrule. The spring can provide eccentric stationary blade pretightning force, even make the hand leave eccentric stationary blade, eccentric stationary blade still can rotate under the spring force effect of spring to the extrusion axle sleeve, when avoiding hand or torque wrench to move, the cover barrel clamp loses the extrusion force of eccentric stationary blade after because of not enough loosening with the screw feed volume of end cover.

Further, the upper end in the outside that the cover barrel pressed from both sides is equipped with the awl profile, the awl profile with the upper end butt of the inside of pneumatic section of thick bamboo holder, the lower extreme of pneumatic section of thick bamboo holder is equipped with the cylinder, the upper end of cylinder is equipped with the pull rod, the pull rod is located the inside in first hole, the upper end of pull rod with the outside bottom that the cover barrel pressed from both sides all is equipped with matched with screw thread. The cover cylinder presss from both sides the bottom and connects in the top of the pull rod of pneumatic cover cylinder holder seat through the mode of screw thread, makes the cover cylinder press from both sides and can be fixed in accurately the top of pull rod through the mode of cylinder pulling pull rod, makes the cover cylinder press from both sides and moves down, because the tapered surface in the outside of cover cylinder clamp and the last port butt of pneumatic cover cylinder holder seat, along with the downstream of cover cylinder clamp, tapered surface cooperation position diminishes, thereby makes the cover cylinder clamp shrink press from both sides tight end cover, provides the support impetus for the end cover.

Further, the lower end of the wire cutting groove is provided with a wire cutting big hole. The collet chuck is better deformed and the stress is concentrated at the lower end of the wire cutting groove.

Furthermore, a copper block is arranged at one end of the thread of the first threaded fastener, and the copper block is embedded in the first threaded fastener. The shaft sleeve made of the iron alloy is contacted by the copper block, and the shaft sleeve can be further prevented from being damaged in the clamping process because the hardness of copper is lower than that of the iron alloy.

Further, the first threaded fastener and the second through hole are at least two. Through eccentric stationary blade and a plurality of threaded fastener countershaft cover tight, make the axle sleeve possess a plurality of stress points, can improve and press from both sides tight effect, make the axle sleeve atress more even simultaneously, further avoid the axle sleeve impaired at the clamping in-process.

Further, corner edges of the outer side of the sleeve clamp are rounded transitions. The fillet transition can avoid the stress of the sleeve clamp from being too concentrated in the use process.

Furthermore, the outer side of the sleeve clamp is provided with a guide convex groove in sliding fit with the edge of the first hole. With the edge sliding fit's of first hole just protruding groove leads can make the sleeve press from both sides the inside of getting preliminary location at pneumatic collet chuck, avoids the sleeve to press from both sides the inside skew at pneumatic collet chuck.

Furthermore, the number of the counter bores is at least two, and the at least two counter bores are sequentially and vertically arranged downwards from large to low according to the diameter. The counter bores with different diameters enable the same collet to be suitable for end covers with various diameter specifications.

The utility model discloses the beneficial effect who produces is: the end cover is placed in a counter bore of the sleeve clamp, a linear cutting groove is formed in the side wall of the sleeve clamp to enable the sleeve clamp to be easily deformed, therefore, a pneumatic sleeve clamp seat is started to apply force to the sleeve clamp to enable the sleeve clamp to be deformed and compressed, the edge of the counter bore can compress the end cover, a threaded end of a first threaded fastener and an eccentric fixing piece clamp a shaft sleeve penetrating through a middle hole of a ferrule together, a torque wrench penetrates through a third through hole, the eccentric fixing piece rotates in the direction of a contact point of the eccentric fixing piece and the shaft sleeve, the fixed eccentric piece cannot rotate continuously along a hinge point due to the fact that the fixed eccentric piece abuts against the shaft sleeve, at the moment, the fixed eccentric piece extrudes a shaft and transmits the acting force of the torque wrench to the shaft sleeve to enable the shaft sleeve to rotate along a central axis, the shaft sleeve is screwed into the upper end cover to complete locking of the shaft sleeve, the mode is suitable for shaft sleeves with various external diameter specifications, and then the shaft sleeve can be loosened by reversely screwing the eccentric fixing piece, easy to disassemble.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a front cross section of the present invention;

fig. 2 is a top view of the shaft sleeve fixing module of the present invention;

wherein, 1, a sleeve clamp; 11. a first hole; 12. cutting a groove by a line; 121. line cutting a large hole; 13. a counter bore; 14. round corners; 15. a guide convex groove; 16. a tapered surface; 2. a pneumatic cartridge holder; 21. a cylinder; 211. a pull rod; 3. a ferrule; 31. a second through hole; 32. a second threaded fastener; 321. a spring; 4. an eccentric fixing piece; 41. a hinge point; 42. a third through hole; 5. a first threaded fastener; 51. a copper block; 6. a torque wrench; 7. a shaft sleeve; 8. and (4) end covers.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings.

Fig. 1-2 show an eccentric locking device provided by the present invention, which comprises an end cover fixing module and a shaft sleeve fixing module, wherein the end cover fixing module comprises a collet 1 and a pneumatic collet holder 2, the collet 1 is located inside the pneumatic collet holder 2, the pneumatic collet holder 2 is used for fixing the collet 1, a first hole 11 is vertically arranged in the middle of the collet 1, a linear cutting groove 12 is vertically arranged on the side wall of the collet 1, the linear cutting groove 12 runs through the first hole 11 and the rear of the collet 1, the top of the linear cutting groove 12 extends to the top of the collet 1, a counter bore 13 for accommodating an end cover 8 is arranged at the top of the collet 1, and the diameter of the counter bore 13 is larger than that of the first hole 11;

the fixed module of axle sleeve includes lasso 3, eccentric stationary blade 4 and first threaded fastener 5, and the left end of lasso 3 is equipped with a plurality of second through-holes 31 that can supply first threaded fastener 5 to run through, and second through-

hole

31 and 5 screw-thread fit of first threaded fastener, and eccentric stationary blade 4 articulates in lasso 3, and eccentric stationary blade 4 can rotate on the horizontal plane for the pivot by pin joint 41, and the side of eccentric stationary blade 4 is equipped with and is used for the output complex third through-hole 42 with torque wrench 6.

The bushing 7 fixing module further comprises a second threaded fastener 32, the eccentric fixing piece 4 is connected with the second threaded fastener 32 through a spring 321, and the second threaded fastener 32 is screwed with the collar 3. The spring 321 can provide the pretightening force of the eccentric fixing piece 4, so that even if a hand leaves the eccentric fixing piece 4, the eccentric fixing piece 4 can still rotate under the elastic force action of the spring 321, thereby extruding the shaft sleeve 7, and avoiding that the sleeve clamp 1 is loosened due to insufficient thread feeding amount with the end cover 8 after losing the extrusion force of the eccentric fixing piece 4 when the hand or the torque wrench 6 is moved.

The upper end of the outer side of the collet chuck 1 is provided with a conical surface 16, the conical surface 16 is abutted to the upper end of the inner part of the pneumatic collet chuck base 2, the lower end of the pneumatic collet chuck base 2 is provided with a cylinder 21, the upper end of the cylinder 21 is provided with a pull rod 211, the pull rod 211 is positioned in the first hole 11, and the upper end of the pull rod 211 and the outer bottom of the collet chuck 1 are provided with matched threads. The top in the pull rod 211 of pneumatic collet holder 2 is connected through the mode of screw thread to collet holder 1 bottom, make collet holder 1 can be fixed in the top of pull rod 211 accurately, through the mode of cylinder 21 pulling pull rod 211, make collet holder 1 move down, because the conical surface 16 in the outside of collet holder 1 and the last port butt of pneumatic collet holder 2, along with the downstream of collet holder 1, conical surface 16 cooperation position diminishes, thereby make collet holder 1 shrink press from both sides tight end cover 8, provide the support impetus for end cover 8.

The lower end of the line cutting groove 12 is provided with a line cutting big hole 121. The collet 1 is deformed better and the lower end of the linear cut 12 is stress concentrated.

One end of the screw thread of the first screw thread fastener 5 is provided with a copper block 51, and the copper block 51 is embedded in the first screw thread fastener 5. The contact of the copper block 51 with the sleeve 7, which is made of an iron alloy, further prevents the sleeve 7 from being damaged during the clamping process, since the hardness of copper is lower than that of iron alloy.

At least two first threaded fasteners 5 and second through holes 31 are provided. Press from both sides tightly axle sleeve 7 through eccentric stationary blade 4 and a plurality of first threaded fastener 5, make axle sleeve 7 possess a plurality of stress points, can improve and press from both sides tight effect, make axle sleeve 7 atress more even simultaneously, further avoid axle sleeve 7 impaired at the clamping in-process.

The corner edges of the outer side of the sleeve clamp 1 are rounded 14 transitions. The transition of the rounded corners 14 prevents the collet 1 from being stressed too intensively during use.

The outside of the collet 1 is provided with a pilot tongue 15 which is in sliding engagement with the edge of the first aperture 11. The pilot tongue 15, which is slidably engaged with the edge of the first hole 11, allows the collet 1 to be preliminarily positioned inside the pneumatic collet holder 2, and prevents the collet 1 from being displaced inside the pneumatic collet holder 2.

At least two counter bores 13 are arranged, and the at least two counter bores 13 are arranged vertically downwards in sequence from large to low in diameter. Counterbores 13 of different diameters allow the same collet 1 to be used with end caps 8 of a variety of diameters.

The working mode is as follows: the end cover 8 is placed in a counter bore 13 of the sleeve clamp 1, the bottom of the sleeve clamp 1 is connected to the top of a pull rod 211 of a pneumatic sleeve clamp seat 2 in a threaded mode, so that the sleeve clamp 1 can be accurately fixed to the top of the pull rod 211, the sleeve clamp 1 moves downwards in a mode that a cylinder 21 pulls the pull rod 211, the sleeve clamp 1 is easy to deform due to the fact that a linear cutting groove 12 is formed in the side wall of the sleeve clamp 1, the conical surface 16 on the outer side of the sleeve clamp 1 is abutted to an upper end opening of the pneumatic sleeve clamp seat 2, and along with downward movement of the sleeve clamp 1, the matching position of the conical surface 16 is reduced, so that the sleeve clamp 1 contracts to clamp the end cover 8, and a supporting force application point is provided for the end cover 8;

the shaft sleeve 7 is passed through the central hole of the ferrule 3, so that the eccentric fixing piece 4 is tightly close to the shaft sleeve 7 under the action of the elastic force of the spring 321, the feeding amount of the first threaded fastener 5 is increased by screwing the first threaded fastener 5 in a suspending way, the copper block 51 and the eccentric fixing piece 4 are enabled to clamp the shaft sleeve 7 together, the external thread at the bottom of the shaft sleeve 7 is tightly close to the internal thread at the upper end of the end cover 8, the torque wrench 6 is passed through the third through hole 42, the eccentric fixing piece 4 is rotated along the action direction of the elastic force of the spring 321, the fixed eccentric piece cannot rotate along the hinge point 41 because of tightly abutting against the shaft sleeve 7, at the moment, the fixed eccentric piece extrudes the shaft and transmits the action force of the torque wrench 6 to the shaft sleeve 7, so that the shaft sleeve 7 rotates along the central axis, the shaft sleeve 7 is hung into the upper end cover 8 to complete the locking of the shaft sleeve 7, then the eccentric fixing piece 4 is reversely hung and screwed by the torque wrench 6, the eccentric fixing piece 4 reversely rotates along the hinge point 41, leaving contact with the sleeve 7, the ferrule 3 can now be removed from the sleeve 7.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "upper", "lower", "left", "right", "front", "rear", and the like as used herein are for illustrative purposes only.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. An eccentric type locking device is characterized by comprising an end cover fixing module and a shaft sleeve fixing module, wherein the end cover fixing module comprises a sleeve clamp and a pneumatic cylinder clamp seat, the sleeve clamp is located inside the pneumatic cylinder clamp seat, a first hole is vertically formed in the middle of the sleeve clamp, a line cutting groove is vertically formed in the side wall of the sleeve clamp, the line cutting groove penetrates through the rear portion of the first hole and the rear portion of the sleeve clamp, the top of the line cutting groove extends to the top of the sleeve clamp, a counter bore used for containing an end cover is formed in the top of the sleeve clamp, the diameter of the counter bore is larger than that of the first hole, a cone-shaped surface is arranged at the upper end of the outer side of the sleeve clamp, and the cone-shaped surface is abutted to the upper end of the inside of the pneumatic cylinder clamp seat;

the shaft sleeve fixing module comprises a ferrule, an eccentric fixing piece and a first threaded fastener, a plurality of second through holes for the first threaded fastener to penetrate through are formed in the left end of the ferrule, the second through holes are in threaded fit with the first threaded fastener, the eccentric fixing piece is hinged to the ferrule, the eccentric fixing piece can rotate on the horizontal plane by taking a hinged point as a rotating shaft, and a third through hole used for being matched with the output end of the torque wrench is formed in the side face of the eccentric fixing piece.

2. The eccentric locking device of claim 1, wherein the bushing securing module further comprises a second threaded fastener, the eccentric securing plate being connected to the second threaded fastener by a spring, the second threaded fastener being threaded to the collar.

3. The eccentric locking device according to claim 1, wherein the lower end of the pneumatic collet holder is provided with a cylinder, the upper end of the cylinder is provided with a pull rod, the pull rod is located inside the first hole, and the upper end of the pull rod and the outer bottom of the collet holder are provided with matching threads.

4. An eccentric locking device according to claim 1, wherein the lower end of the wire cut groove is provided with a wire cut large hole.

5. The eccentric locking device of claim 1 wherein the first threaded fastener has a copper slug at one end of its thread, the copper slug being embedded in the first threaded fastener.

6. The eccentric locking device of claim 1 wherein there are at least two of said first threaded fastener and said second through hole.

7. An eccentric locking device according to claim 1, characterized in that the corner edges of the outside of the collet chuck are rounded transitions.

8. An eccentric locking device according to claim 1, wherein the outside of the collet is provided with a pilot tongue which is a sliding fit with the edge of the first hole.

9. An eccentric locking device according to claim 1, wherein there are at least two counter bores, and at least two counter bores are arranged vertically downwards in sequence from large to small in diameter.