CN216399488U

CN216399488U - Built-in blind hole bush dismounting device

Info

Publication number: CN216399488U
Application number: CN202220215111.4U
Authority: CN
Inventors: 李和平
Original assignee: Beijing Yangde Environmental Protection And Energy Technology Co ltd
Current assignee: Beijing Yangde Environmental Protection And Energy Technology Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-04-29
Anticipated expiration: 2032-01-26

Abstract

The utility model relates to a dismounting device for a built-in blind hole bushing, which comprises a supporting mechanism, a drawing mechanism and a clamping mechanism, wherein the supporting mechanism is arranged on the inner side of the blind hole bushing; the drawing mechanism is arranged on the supporting mechanism, the clamping mechanism is connected with the end of the drawing mechanism, the clamping mechanism is provided with at least two clamping hooks which are arranged in a back-to-back manner, and the drawing mechanism controls the clamping hooks to move upwards in a back-to-back manner. The utility model can rapidly remove the bushing in the blind hole, and has high operation efficiency.

Description

Built-in blind hole bush dismounting device

Technical Field

The utility model relates to the technical field of equipment manufacturing and maintenance, in particular to a dismounting device for a bushing with a built-in blind hole.

Background

In some mechanical equipment moving part structural designs, shafts are matched with holes, and in order to enable the shafts and the holes to achieve high movement precision, the mechanical equipment moving part structural design has high requirements on precision, roughness, wear resistance, sealing performance and the like of parts. It is common to use relatively wear resistant bushings, bearings, and the like, which are installed in the bore-like member by interference fit and provide lubrication to the surfaces.

In some use occasions, in order to ensure the sealing performance of the parts, the hole parts are designed into blind holes, and the bushings are pressed in the blind holes. If the bushing is worn or is not proper in size and needs to be replaced, the bushing is difficult or impossible to remove by a conventional tool because the thickness of the bushing is small and the bushing is arranged in the blind hole in an interference fit manner. Usually, destructive measures or direct scrapping are adopted for solving the problem, so that the maintenance cost is high, and the problems of time and labor waste and resource waste are solved.

Therefore, the technical personnel in the field are dedicated to develop a built-in blind hole bushing dismounting device which can quickly dismount the bushing in the blind hole and has high operation efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a dismounting device for a bushing with a built-in blind hole, which can quickly dismount the bushing in the blind hole and has high operation efficiency.

The technical scheme for solving the technical problems is as follows: a dismounting device for a bushing with a built-in blind hole comprises a supporting mechanism, a drawing mechanism and a clamping mechanism;

the drawing mechanism is arranged on the supporting mechanism, the clamping mechanism is connected with the end of the drawing mechanism, the clamping mechanism is provided with at least two clamping hooks which are arranged in a back-to-back manner, and the drawing mechanism controls the clamping hooks to move upwards in a back-to-back manner.

The utility model has the beneficial effects that: the supporting mechanism is used for supporting the drawing mechanism and the clamping mechanism, the drawing mechanism controls the clamping hooks to move back and forth so that the end portions of the clamping hooks clamp and fix the blind hole bushing, and the drawing mechanism integrally pulls the clamping mechanism to move upwards to pull out the blind hole bushing.

On the basis of the technical scheme, the utility model can be further improved as follows.

Further, the supporting mechanism comprises a supporting seat, the supporting seat is provided with a hollow cylinder, and at least two supporting arms are uniformly distributed on the side wall of the hollow cylinder;

the supporting mechanism further comprises a supporting column, a through hole is formed in the end portion of the supporting column, and one end of the supporting arm penetrates through the through hole.

The beneficial effect who adopts above-mentioned further scheme is that support arm and pillar swing joint can adjust the distance between a plurality of pillars according to actual conditions to improve dismounting device's commonality.

Further, the drawing mechanism comprises a screw rod, the screw rod penetrates through the center hole of the hollow cylinder and is connected with the clamping mechanism, and a screw rod nut matched with the screw rod is further arranged on the upper side of the supporting seat.

The beneficial effect who adopts above-mentioned further scheme is that the centre bore is used for the lead screw direction, thereby the lead screw shifts up and drives the whole upward movement of block mechanism in the lead screw nut rotation process, and then pulls out the blind hole bush of block on block mechanism, improves operating efficiency.

Further, the clamping mechanism comprises a clamping support, the clamping support is provided with a central cylinder, and the middle part of the central cylinder is provided with a screw rod through hole matched with the screw rod;

at least two clamping hook supporting arms are uniformly distributed on the side wall of the central cylinder, and the clamping hook supporting arms are hinged to the clamping hooks.

The screw rod moves or rotates to drive the clamping support to move upwards, so that the clamping mechanism is driven to move upwards; the clamping hook supporting arms are used for connecting the clamping hooks.

Furthermore, the clamping hook supporting arm is provided with a spare part, a strip-shaped groove is formed in the clamping hook supporting arm, and a pin passes through the strip-shaped groove to be connected with the clamping hook end part, so that the clamping hook end part is located in the spare part.

The beneficial effect who adopts above-mentioned further scheme is pin and bar groove clearance fit, and the pin of being convenient for removes in the bar inslot for the block colludes can remove along the bar inslot direction, is convenient for adjust the relative position that each block colluded, further improves dismounting device's commonality.

Further, the end part of the screw rod is also connected with a tip cone, the tip cone is provided with a conical surface, and the conical surface is abutted to the clamping hook.

The beneficial effect who adopts above-mentioned further scheme is that the tip cone is the taper shape, and the contact area that conical surface and block colluded through control conical surface and block colludes to the distance between a plurality of blocks collude is controlled, thereby does benefit to the blind hole bush of dismantling different diameters, improves dismounting device's commonality.

Further, the clamping hook comprises a first connecting part, a second connecting part and a third connecting part which are connected in sequence;

the first connecting portion is provided with a connecting hole through which the pin passes, the second connecting portion is provided with a butting surface which is in parallel butt joint with the conical surface, and the third connecting portion is fixedly connected with the second connecting portion.

The beneficial effect who adopts above-mentioned further scheme is through the area of contact of control circular conical surface and butt face to control a plurality of blocks and collude the distance between the room, thereby do benefit to and dismantle the blind hole bush of different diameters.

Furthermore, a clamping hook is arranged at the end part of the third connecting part, and the clamping hook is arc-shaped, and the end part of the clamping hook faces the supporting mechanism.

The beneficial effect who adopts above-mentioned further scheme is that the trip that is convex is favorable to fixing the blind hole bush block to be convenient for with blind hole bush tip block, and then do benefit to and dismantle the blind hole bush out.

Further, a handle is installed on one side, opposite to the tip cone, of the end portion of the screw rod.

The beneficial effect who adopts above-mentioned further scheme is that the lead screw tip has the handle, is convenient for rotate the lead screw to be convenient for control block mechanism and remove.

Further, the support arm and the stay are fastened by a bolt.

Adopt above-mentioned further scheme's beneficial effect be a plurality of pillars after adjusting to suitable position, fasten it through the bolt, prevent that the pillar from removing the influence and dismantling the process.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic top view of an embodiment of the present invention;

FIG. 3 is a schematic view of a supporting seat structure according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a fastening support structure according to an embodiment of the present invention;

fig. 5 is a schematic view of a hook structure according to an embodiment of the utility model.

In the drawings, the components represented by the respective reference numerals are listed below:

100. a support mechanism; 110. a supporting seat; 111. a hollow cylinder; 112. a support arm; 113. a central bore; 120. a pillar; 121. a through hole; 122. a bolt;

200. a drawing mechanism; 210. a screw rod; 220. a feed screw nut; 230. a handle;

300. a clamping mechanism; 310. a hook is clamped; 311. a first connection portion; 312. a second connecting portion; 313. a third connecting portion; 314. a hook is clamped; 315. connecting holes; 316. an abutting surface; 320. clamping a support; 321. a central cylinder; 322. a screw rod through hole; 323. the clamping hook supports the arm; 324. a vacant part; 325. a strip-shaped groove; 326. a pin; 330. a tip cone; 331. a conical surface.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and simplicity of description, and do not indicate or imply that the system or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, a device for removing a bushing with a built-in blind hole includes a supporting mechanism 100, a pulling mechanism 200 and a fastening mechanism 300, wherein the pulling mechanism 200 is disposed on the supporting mechanism 100, the fastening mechanism 300 is connected to an end of the pulling mechanism 200, the fastening mechanism 300 has at least two fastening hooks 310 disposed opposite to each other, and the pulling mechanism 200 controls the fastening hooks 310 to move back and forth and upward.

The supporting mechanism 100 is used for supporting the drawing mechanism 200 and the clamping mechanism 300, the drawing mechanism 200 controls the plurality of clamping hooks 310 to move back and forth, so that after the ends of the clamping hooks 310 clamp and fix the blind hole bushing, the whole drawing mechanism 200 pulls the clamping mechanism 300 to move upwards so as to pull out the blind hole bushing, and therefore the blind hole bushing dismounting device is high in operation efficiency and simple in structure.

In an embodiment, the supporting mechanism 100 includes a supporting base 110, the supporting base 110 has a hollow cylinder 111, the hollow cylinder 111 has a central hole 113 in the middle, and the central hole 113 is hollow and mainly used for the screw rod 210 to pass through and guide the screw rod 210. At least two supporting arms 112 are uniformly distributed on the side wall of the hollow cylinder 111, and in order to further balance the acting force of the hollow cylinder 111, in this embodiment, three supporting arms 112 are uniformly distributed on the side wall of the hollow cylinder 111, and the included angle between the supporting arms 112 is 120 °. The supporting mechanism 100 further includes a supporting column 120, and the supporting column 120 is mainly used for supporting the supporting arm 112 and the engaging mechanism 300. The end of the support post 120 is provided with a through hole 121, one end of the support arm 112 is arranged in the through hole 121 in a penetrating manner, so that the through hole 121 and the support arm 112 are in clearance fit, the distance between the support posts 120 can be adjusted according to different blind hole bushings, and therefore the blind hole bushings can be suitable for different types, and the universality of the dismounting device is improved. When the support post 120 is adjusted to a proper position, the support arm 112 and the support post 120 are fastened through the bolt 122, so that the support arm 112 and the support post 120 are fixedly connected, the relative displacement between the support arm 112 and the support post 120 in the dismounting process is prevented, and the dismounting efficiency is reduced.

In some embodiments, the drawing mechanism 200 includes a screw rod 210, the screw rod 210 is connected to the engaging mechanism 300 through the central hole 113 of the hollow cylinder 111, and the engaging mechanism 300 is pulled to move upward or downward by controlling the screw rod 210 to move upward or downward. The upper side of the supporting seat 110 is further provided with a lead screw nut 220 matched with the lead screw 210, the lead screw nut 220 is arranged on the supporting seat 110, and in another embodiment, in order to reduce the rotation friction force between the lead screw nut 220 and the supporting seat 110, a thrust bearing is arranged between the lead screw nut 220 and the supporting seat 110.

The clamping mechanism 300 comprises a clamping support 320, the clamping support 320 is provided with a central cylinder 321, the middle of the central cylinder 321 is provided with a screw rod through hole 322 matched with the screw rod 210, the screw rod through hole 322 is meshed with a screw thread on the screw rod 210, at least two clamping hook support arms 323 are uniformly distributed on the side wall of the central cylinder 321, in the embodiment, in order to balance the stress of the central cylinder 321, three clamping hook support arms 323 are arranged on the periphery of the central cylinder 321, and the clamping hook support arms 323 are hinged with the clamping hooks 310.

The hook support arm 323 has a free portion 324, and the free portion 324 is mainly used to provide a sufficient moving space for the hook 310. The clamping hook supporting arm 323 is provided with a strip-shaped groove 325, the strip-shaped groove 325 is positioned on two sides of the spare part 324, the pin 326 penetrates through the strip-shaped groove 325 to be connected with the end part of the clamping hook 310, so that the end part of the clamping hook 310 is positioned in the spare part 324, and the pin 326 is in clearance fit with the strip-shaped groove 325, so that the clamping hook 310 can move along the strip-shaped groove 325 conveniently. In one embodiment, after pin 326 passes through slot 325, pin 326 is secured within slot 325 by a cotter pin to prevent pin 326 from falling out.

The end of the screw rod 210 is further connected with an end cone 330, the end cone 330 includes a cylinder and a cone, in a specific embodiment, a threaded hole is formed in the cone, and the end of the screw rod 210 is connected with the threaded hole. The tip cone 330 has a conical surface 331, specifically a conical surface 331 on the cone, the conical surface 331 abuts against the engaging hooks 310, and the distance between the engaging hooks 310 is further controlled by controlling the contact area between the conical surface 331 and the engaging hooks 310. In order to facilitate the rotation of the screw rod 210 to pull the engaging mechanism 300 to move, a handle 230 is installed at one side of the end of the screw rod 210 opposite to the tip cone 330, an inner hexagonal hole may be further formed at the end of the screw rod 210, and the screw rod 210 is rotated by pulling a wrench.

The hook 310 includes a first connection portion 311, a second connection portion 312, and a third connection portion 313 connected in sequence, and the first connection portion 311, the second connection portion 312, and the third connection portion 313 are fixedly connected. The first connection portion 311 is provided with a connection hole 315 for passing the pin 326, and the pin 326 is in clearance fit with the connection hole 315. The second connecting portion 312 is provided with a contact surface 316 which is in parallel contact with the conical surface 331, and the distance between the engaging hooks 310 is controlled by controlling the contact area between the contact surface 316 and the conical surface 331. The third connecting portion 313 is fixedly connected to the second connecting portion 312, a hook 314 is disposed at an end of the third connecting portion 313, the hook 314 faces outward, specifically, the hook 314 is arc-shaped, and an end of the hook 314 faces the supporting mechanism 100.

The working principle of the utility model is as follows: the blind hole bushing is placed at a specified position, the screw rod 210 is rotated to enable the clamping hook 310 to extend into the blind hole, the screw rod 210 is continuously rotated to enable the conical surface 331 to abut against the abutting surface 316 and the clamping hook 314 to clamp the end part of the blind hole bushing, and then the handle 230 is rotated or the screw nut 220 is rotated to enable the screw rod 210 to move upwards so as to pull the clamping hook 310 to move upwards, so that the blind hole bushing is pulled out of the blind hole.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a built-in blind hole bush dismounting device which characterized in that: comprises a supporting mechanism (100), a drawing mechanism (200) and a clamping mechanism (300);

the drawing mechanism (200) is arranged on the supporting mechanism (100), the clamping mechanism (300) is connected with the end of the drawing mechanism (200), the clamping mechanism (300) is provided with at least two clamping hooks (310) which are arranged in a back-to-back mode, and the drawing mechanism (200) controls the clamping hooks (310) to move back-to-back and upwards.

2. The built-in blind hole bushing dismounting device according to claim 1, characterized in that: the supporting mechanism (100) comprises a supporting seat (110), the supporting seat (110) is provided with a hollow cylinder (111), and at least two supporting arms (112) are uniformly distributed on the side wall of the hollow cylinder (111);

the supporting mechanism (100) further comprises a supporting column (120), a through hole (121) is formed in the end portion of the supporting column (120), and one end of the supporting arm (112) penetrates through the through hole (121).

3. The built-in blind hole bushing dismounting device according to claim 2, characterized in that: the drawing mechanism (200) comprises a screw rod (210), the screw rod (210) penetrates through a center hole (113) of the hollow cylinder (111) and is connected with the clamping mechanism (300), and a screw rod nut (220) matched with the screw rod (210) is further arranged on the upper side of the supporting seat (110).

4. The built-in blind hole bushing dismounting device according to claim 3, characterized in that: the clamping mechanism (300) comprises a clamping support (320), the clamping support (320) is provided with a central cylinder (321), and the middle part of the central cylinder (321) is provided with a screw rod through hole (322) matched with the screw rod (210);

the side wall of the central cylinder (321) is uniformly distributed with at least two clamping hook supporting arms (323), and the clamping hook supporting arms (323) are hinged with the clamping hooks (310).

5. The built-in blind hole bushing dismounting device according to claim 4, characterized in that: the clamping hook supporting arm (323) is provided with a spare part (324), a strip-shaped groove (325) is formed in the clamping hook supporting arm (323), and a pin (326) penetrates through the strip-shaped groove (325) and is connected with the end of the clamping hook (310) to enable the end of the clamping hook (310) to be located in the spare part (324).

6. The built-in blind hole bushing dismounting device according to claim 5, characterized in that: the end part of the screw rod (210) is further connected with a tip cone (330), the tip cone (330) is provided with a conical surface (331), and the conical surface (331) is abutted to the clamping hook (310).

7. The built-in blind hole bushing dismounting device according to claim 6, characterized in that: the clamping hook (310) comprises a first connecting part (311), a second connecting part (312) and a third connecting part (313) which are connected in sequence;

the first connecting portion (311) is provided with a connecting hole (315) through which the pin (326) passes, the second connecting portion (312) is provided with an abutting surface (316) which is abutted to the conical surface (331) in parallel, and the third connecting portion (313) is fixedly connected with the second connecting portion (312).

8. The built-in blind hole bushing dismounting device according to claim 7, characterized in that: a clamping hook (314) is arranged at the end part of the third connecting part (313), the clamping hook (314) is arc-shaped, and the end part of the clamping hook (314) faces the supporting mechanism (100).

9. The built-in blind hole bushing dismounting device according to claim 7, characterized in that: and a handle (230) is arranged on one side of the end part of the screw rod (210) opposite to the tip cone (330).

10. The built-in blind hole bushing dismounting device according to claim 4, characterized in that: the support arm (112) is fastened to the strut (120) by a bolt (122).