CN215433482U - Puller - Google Patents

Abstract

The utility model relates to a puller, including two at least claw arms, puller seat and ejector pin, the one end of claw arm with the puller seat is connected, be provided with spacing portion on the other end of claw arm, spacing portion is used for carrying on spacingly to first work piece, the ejector pin sets up on the puller seat, and can follow ejector pin length direction reciprocating motion, the ejector pin is used for being connected with the second work piece, and drives second work piece synchronous motion, in order to realize first work piece with assembly and dismantlement between the second work piece. Utilize the horse that draws that this disclosure provided, can be through a clamping, accomplish the assembly and the dismantlement process of first work piece and second work piece, improved work efficiency.

Description

Puller

Technical Field

The utility model relates to a dismouting equipment technical field specifically, relates to a puller.

Background

The puller is a tool frequently used in mechanical maintenance and is mainly used for disassembling parts such as gears or bearings which are arranged on a shaft in an interference fit manner. At present, the puller released in the market mainly takes the disassembly of workpieces as a main part, and for some workpieces with special shapes and structures, when two workpieces are assembled, the stressed workpiece cannot be directly placed at the corresponding installation position, secondary clamping is needed, the assembly process and operation time are increased, the efficiency is low, and the operation is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a puller, this puller can be through a clamping, accomplishes the assembly and the dismantlement process of first work piece and second work piece, and convenient operation can improve the work efficiency of assembly and dismantlement.

In order to achieve the above purpose, the present disclosure provides a puller, including at least two claw arms, puller seat and ejector pin, the one end of claw arm with the puller seat is connected, be provided with spacing portion on the other end of claw arm, spacing portion is used for spacing first work piece, the ejector pin sets up on the puller seat, and can follow ejector pin length direction reciprocating motion, the ejector pin is used for being connected with the second work piece, and drives second work piece synchronous motion, in order to realize first work piece with assembly and dismantlement between the second work piece.

Optionally, the limiting part comprises at least two limiting protrusions, and the at least two limiting protrusions are arranged on the claw arm at intervals.

Optionally, the ejector rod comprises an ejector rod main body and a connecting piece, the connecting piece is arranged on the ejector rod main body, and the connecting piece is used for being detachably connected with the second workpiece.

Optionally, the ejector rod main part is a lead screw, the ejector rod main part is threaded on the puller seat, and the connecting piece is rotatably arranged on the ejector rod main part.

Optionally, the connecting piece is a fixture block structure, and the fixture block structure is used for being connected with the second workpiece in a clamping manner.

Optionally, the connecting piece includes connecting portion and block portion of interval arrangement, block portion is used for being connected with the second work piece block, the tip of ejector pin main part is provided with the dog, the ejector pin main part is through seting up in the via hole on the connecting portion runs through connecting portion, the dog is located connecting portion with in the interval space between the block portion, just the ejector pin main part with via hole clearance fit, the size of dog is greater than the size of via hole.

Optionally, a plurality of mounting frames for mounting the claw arm are uniformly distributed on the puller seat in the circumferential direction, a plurality of mounting holes are arranged on each mounting frame at intervals, and the claw arm is configured to be capable of being connected to any one of the plurality of mounting holes.

Optionally, the claw arm is hinged with the puller seat.

Optionally, an operating rod is arranged on the top rod main body, and the operating rod is configured to enable the top rod main body to rotate by operating the operating rod.

Optionally, the main body of the ejector rod is a hydraulic telescopic rod.

Through the technical scheme, in the method, the puller can complete the assembling and disassembling processes of the first workpiece and the second workpiece through one-time clamping, the operation is convenient, the assembling and disassembling efficiency can be improved, the limiting part can limit the first workpiece, the ejector rod can drive the second workpiece to synchronously reciprocate, and the assembling and disassembling between the first workpiece and the second workpiece are realized.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic structural diagram of a puller according to an embodiment provided by the present disclosure;

fig. 2 is a schematic working diagram of a puller according to an embodiment of the present disclosure, in which a first workpiece and a second workpiece are shown;

fig. 3 is a schematic structural diagram of a connector according to an embodiment provided by the present disclosure.

Description of the reference numerals

10-puller;

11-claw arm; 111-first stage; 113-a second segment;

13-a puller seat;

15-a mandril; 151-ejector pin body; 153-connecting piece; 1531-a linker; 1533-a fastening portion;

17-a limiting part; 171-a first stop protrusion; 173-a second stop lug;

19-a first workpiece;

21-a second workpiece;

23-operating lever.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, the terms "upper and lower" are generally defined based on the direction of the drawing of the drawings. The term "inner and outer" refers to the inner and outer parts of the relevant component. Furthermore, the terms "first," "second," and the like, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 and 2, the present disclosure provides a puller 10, where the puller 10 includes at least two claw arms 11, a puller seat 13 and a mandril 15, one end of the claw arm 11 is connected with the puller seat 13, the other end of the claw arm 11 is provided with a limiting portion 17, the limiting portion 17 is used for limiting a first workpiece 19, the mandril 15 is arranged on the puller seat 13 and can reciprocate along the length direction of the mandril 15, and the mandril 15 is used for connecting with a second workpiece 21 and driving the second workpiece 21 to move synchronously, so as to implement assembly and disassembly between the second workpiece 21 and the first workpiece 19.

Through the technical scheme, when the second workpiece 21 and the first workpiece 19 are assembled or disassembled, the ejector rod 15 can be connected with the second workpiece 21. Because the limiting part 17 can limit the first workpiece 19, the first workpiece 19 is fixed in the process that the ejector rod 15 reciprocates along the length direction of the ejector rod. Therefore, during the reciprocating movement of the carrier rod 15, the engagement and disengagement between the first workpiece 19 and the second workpiece 21 can be achieved, thereby achieving the assembly and disassembly of the two. The puller 10 is convenient to operate and simple in structure, and the working efficiency of assembling and disassembling the second workpiece 21 and the first workpiece 19 can be improved.

The present disclosure does not limit the specific structure of the stopper portion 17. Alternatively, as shown in fig. 1 and 2, in one embodiment of the present disclosure, the limiting portion 17 includes at least two limiting protrusions, and the at least two limiting protrusions are provided at intervals on one side of the claw arm 11 for clamping the first workpiece 19.

During assembly and disassembly, referring to fig. 2, a first workpiece 19 can be placed in the space defined by the four stopper protrusions between the two claw arms 11, and a second workpiece 21 can be placed between the ejector pin 15 and the first workpiece 19, with the end of the second workpiece 21 near the ejector pin 15 being connected to the ejector pin 15. In this way, the first workpiece 19 is limited by the two limiting protrusions on each claw arm 11, so that the first workpiece 19 is fixed when the ejector rod 15 moves along the length direction of the ejector rod, and thus, the first workpiece 19 can be jointed with or separated from the second workpiece 21, and the assembly and disassembly of the second workpiece 21 and the first workpiece 19 can be realized.

In addition, it will be appreciated that in another embodiment of the present disclosure, not shown, the stop portion 17 may include only one stop projection as described above. In this embodiment, during the assembly of the second workpiece 21 and the first workpiece 19, the first workpiece 19 may be placed on the side of the stopper projection facing the ejector pin 15, and the second workpiece 21 may be placed between the ejector pin 15 and the first workpiece 19. During the disassembly, the first workpiece 19 can be placed on the side of the limiting projection facing away from the ejector pin 15, and the second workpiece 21 can be placed between the ejector pin 15 and the first workpiece 19. Since the processes of disassembling and assembling the second workpiece 21 and the first workpiece 19 in this embodiment are similar to those of the above-described embodiment, detailed description thereof will be omitted.

In addition, it is understood that in another not shown embodiment of the present disclosure, the stopper portion 17 includes a stopper groove into which the first workpiece 19 can be snapped, by which the first workpiece 19 is stopped.

In addition, it is understood that, in another embodiment of the present disclosure, which is not shown, the limiting portion 17 includes a telescopic rod, a fixed end of which is fixed on one side of the claw arm 11 for clamping the first workpiece 19, and a telescopic end of which is extended to limit the first workpiece 19.

In addition, it is understood that only two claw arms 11 are shown in fig. 1 and 2, and in other embodiments not shown in the present disclosure, a plurality of claw arms 11 other than two may be provided.

For example, in an embodiment of the present disclosure, which is not shown, the number of the claw arms 11 is three, the three claw arms are uniformly distributed on the puller seat 13 around the axis of the push rod, and the three claw arms 11 are clamped more firmly and reliably.

The present disclosure is also not limited to a specific shape of the claw arm 11. Alternatively, as shown in fig. 1 and 2, in an embodiment of the present disclosure, the claw arms 11 are formed by bending and forming an L-shaped structure, the L-shaped structure includes a first section 111 and a second section 113 which are connected, ends of the first sections 111 of the two claw arms 11 are respectively connected with the puller seat 13, and the second sections 113 of the two claw arms 11 are arranged opposite to each other and are parallel to each other. The push rod 15 is wholly or partially positioned between the second sections 113 of the two claw arms 11 and is parallel to the second sections 113 of the claw arms 11, and the limiting protrusions are respectively oppositely arranged on one sides of the second sections 113 of the two claw arms 11 facing to the central axis of the push rod 15. The stop projections are provided on the second section 113 and the stop projections on the two claw arms 11 extend towards each other.

Alternatively, as shown in fig. 1 and 2, the two limit protrusions on each claw arm 11 are a first limit protrusion 171 and a second limit protrusion 173, respectively, the first limit protrusion 171 is disposed at an end of the second section 113 of the claw arm 11 away from the first section 111, and the second limit protrusion 173 is disposed at any suitable position on the second section 113 of the claw arm 11, for example, at the middle of the second section. The spacing between the two stop protrusions can be designed according to the size of the first workpiece 19.

It can be understood that the limiting protrusion and the claw arm 11 may be separate structures or may be an integral structure. For example, the stopper projection is fixed to the claw arm 11 with a fastener, or the stopper projection is integrally formed on the claw arm 11. Alternatively, in one embodiment of the present disclosure, the claw arm 11 and the stopper protrusion may be integrally formed by machining to simplify the structure and the installation process.

As shown in fig. 1 and 2, in one disclosed embodiment, the lift pin 15 may include a lift pin body 151 and a connecting member 153, the connecting member 153 being disposed on the lift pin body 151, the connecting member 153 being adapted to be detachably connected to the second workpiece 21. The connecting member 153 is detachably connected to the second workpiece 21, so that the connecting member 153 and the second workpiece 21 can be quickly mounted and separated before and after being detached or assembled, and the working efficiency can be improved. In addition, since the push rod 15 is provided as a separate structure of the push rod main body 151 and the connecting member 153, the connecting member 153 suitable for fitting with the second workpiece 21 can be selected when corresponding to the second workpiece 21 having a different structure. Thus, the versatility of the jack 15 can be increased.

In the present disclosure, the connecting member 153 is detachably connected to the second workpiece 21, and includes but is not limited to a threaded connection, a snap connection, and the like.

Alternatively, as shown in fig. 1 and 2, in an embodiment of the present disclosure, the connecting member 153 has a latch structure, and the latch structure is used for being in snap-fit connection with the second workpiece 21. The clamping block structure is connected with the second workpiece 21 in a clamping mode, and the connection and the disassembly are convenient and quick.

The present disclosure does not limit the specific structure of the connection member 153. As shown in fig. 1 to 3, in an embodiment of the present disclosure, the connecting member 153 may include a connecting portion 1531 and a fastening portion 1533 arranged at an interval, the fastening portion 1533 is configured to be fastened to the second workpiece 21, a stopper is disposed at an end of the rod main body 151, the rod main body 151 penetrates through the connecting portion 1531 through a via hole formed in the connecting portion 1531, the stopper is located in a space between the connecting portion 1531 and the fastening portion 1533, and the rod main body 151 is in clearance fit with the via hole, and the size of the stopper is greater than that of the via hole to prevent the rod main body 151 from being removed from the connecting member 153.

The post rod main body 151 is in clearance fit with the via hole, so that the connecting part 1531 is kept fixed during the rotation of the post rod main body 151. The space between the connection part 1531 and the engagement part 1533 provides a space for the stopper to rotate. The stopper prevents the rod body 151 from being separated from the coupling portion 1531 and from coming off the coupling member 153.

In the present embodiment, the second workpiece 21 may be provided with a slot to be engaged with the engaging portion 1533. In operation, the engaging portion 1533 extends into the slot to achieve engaging connection between the engaging portion 1533 and the slot, thereby achieving connection between the rod 15 and the second workpiece 21.

As shown in fig. 1 and 2, in an embodiment of the present disclosure, the rod main body 151 may be a screw rod, the rod main body 151 is threaded through the puller seat 13, and the connecting member 153 is rotatably disposed on the rod main body 151.

In this respect, in the present embodiment, the jack main body 151 is threaded into the puller seat 13, and the jack main body 151 can reciprocate in the longitudinal direction thereof during rotation. Because the connecting member 153 is rotatably disposed on the rod main body 151, the connecting member 153 can be kept stationary during the forward and backward rotation of the rod main body 151, so that the connecting member 153 does not affect the rotation of the rod main body 151 after being connected to the second workpiece 21. Specifically, when the ejector rod main body 151 rotates positively, pressure is applied to the second workpiece 21, the first limiting protrusion 171 limits the first workpiece 19, and the second workpiece 21 extrudes the first workpiece 19 to complete assembly. When the ejector rod main body 151 rotates reversely, a pulling force is applied to the second workpiece 21, the second limiting protrusion 173 limits the first workpiece 19, and the second workpiece 21 pulls the first workpiece 19 to finish the disassembly.

In another embodiment of the present disclosure, the ram body 151 may also be a hydraulic telescopic rod. The second workpiece 21 can be driven to reciprocate through the telescopic motion of the hydraulic telescopic rod, and the degree of automation is high.

To facilitate installation of more claw arms 11, optionally, in one embodiment of the present disclosure, a plurality of mounting brackets (not shown) are uniformly distributed on the puller seat 13 in the circumferential direction, and the mounting brackets may protrude from the puller seat, for example, to extend away from the push rod 15 in a direction perpendicular to the axis of the push rod 15. In the extending direction of the mounting bracket, a plurality of mounting holes may be provided at intervals on each mounting bracket, and the claw arm 11 is configured to be able to be connected to any one of the plurality of mounting holes.

Because a plurality of mounting holes are formed in each mounting frame at intervals, according to the sizes of the first workpiece 19 and the second workpiece 21, the proper claw arms 11 and the positions matched with the mounting holes are reasonably selected, and the size of the space between the plurality of claw arms 11 and the mounting frames for clamping the workpieces is adjusted, so that products with different sizes can be assembled, the puller does not need to be replaced, and the practicability is better.

In the present disclosure, the claw arm 11 and the puller seat 13 may be fixedly connected or movably connected, which is not limited in the present disclosure.

In the embodiment in which the two gripper arms 11 are fixedly connected to the puller seat 13, the workpiece can be pulled on from the lower or side of the puller 10 during operation. When the workpiece is put in place, the connecting member 153 is engaged with the second workpiece 21, and then the ejector main body 151 is rotated to perform a corresponding operation.

Alternatively, in one embodiment of the present disclosure, the claw arm 11 may be hinged with the puller seat 13 through a hinge shaft. For example, the claw arm 11 can be hinged to any one of a plurality of mounting holes on the puller seat 13 through a hinge shaft, the claw arm 11 is hinged to the puller seat 13, the angle between the claw arm 11 and the puller seat 13 can be flexibly adjusted, and the operation is more convenient.

In another embodiment, one of the two claw arms 11, is fixedly connected to the puller seat 13, and the other claw arm 11 is hinged to the puller seat 13, so that the two claw arms can rotate flexibly. The claw arm 11 hinged to the puller seat 13 is supported by one hand, the claw arm 11 is limited, and the phenomenon that the claw arm 11 rotates in the operation process and cannot limit the second workpiece 21 is avoided.

In order to facilitate the rotation of the jack 15, as shown in fig. 1 and 2, in one embodiment of the present disclosure, an operating rod 23 is provided on the jack main body 151, and the operating rod 23 is configured to enable the rotation of the jack main body 151 by operating the operating rod 23.

As shown in fig. 1 and 2, the operating rod 23 may be alternatively disposed at an end of the push rod main body 151 away from the connecting member 153, and perpendicular to the push rod main body 151 to construct a cross-shaped structure, so as to further facilitate the operator to rotate the push rod main body 151.

The present disclosure does not limit the specific material of the puller 10. Optionally, in one embodiment, the claw arm 11 is made of aluminum for protecting the product. The puller seat 13 and the mandril 15 are made of 45# steel materials due to high use frequency.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. The utility model provides a puller, its characterized in that includes two at least claw arms (11), puller seat (13) and ejector pin (15), the one end of claw arm (11) with puller seat (13) are connected, be provided with spacing portion (17) on the other end of claw arm (11), spacing portion (17) are used for spacing first work piece (19), ejector pin (15) set up on puller seat (13), and can follow ejector pin (15) length direction reciprocating motion, ejector pin (15) are used for being connected with second work piece (21), and drive second work piece (21) synchronous motion, in order to realize assembly and dismantlement between first work piece (19) and second work piece (21).

2. The puller according to claim 1, wherein said limiting portion (17) comprises at least two limiting protrusions, at least two limiting protrusions being provided at intervals on said claw arm (11).

3. The puller according to claim 1, wherein said ram (15) comprises a ram body (151) and a connecting member (153), said connecting member (153) being disposed on said ram body (151), said connecting member (153) being adapted for detachable connection to said second workpiece (21).

4. The puller according to claim 3, wherein the jack body (151) is a lead screw, the jack body (151) is threaded on the puller seat (13), and the connecting piece (153) is rotatably arranged on the jack body (151).

5. Puller as in claim 4, wherein said connecting member (153) is a snap-fit structure for snap-fit connection with said second workpiece (21).

6. The puller according to claim 5, wherein the connecting member (153) comprises a connecting portion (1531) and a clamping portion (1533) arranged at intervals, the clamping portion (1533) is used for clamping connection with a second workpiece (21), a stopper is arranged at an end of the ejector rod main body (151), the ejector rod main body (151) penetrates through the connecting portion (1531) through a via hole formed on the connecting portion (1531), the stopper is located in a space between the connecting portion (1531) and the clamping portion (1533), the ejector rod (15) main body is in clearance fit with the via hole, and the stopper is larger than the via hole.

7. The puller according to claim 1, wherein a plurality of mounting frames for mounting the claw arm (11) are uniformly distributed on the puller seat (13) in the circumferential direction, a plurality of mounting holes are arranged on each mounting frame at intervals, and the claw arm (11) is configured to be capable of being connected to any one of the plurality of mounting holes.

8. The puller according to claim 1 or 7, characterized in that said claw arm (11) is hinged with said puller seat (13).

9. The puller according to claim 4, characterized in that the top rod main body (151) is provided with an operating rod (23), the operating rod (23) is configured to enable the top rod main body (151) to rotate by operating the operating rod (23).

10. The puller according to claim 3, wherein the ram body (151) is a hydraulic telescopic rod.

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