CN212794816U

CN212794816U - Pin puller

Info

Publication number: CN212794816U
Application number: CN202021864706.XU
Authority: CN
Inventors: 何能辉
Original assignee: Hunan Sany Medium Lifting Machinery Co Ltd
Current assignee: Hunan Sany Medium Lifting Machinery Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-03-26
Anticipated expiration: 2030-08-31

Abstract

The utility model provides a pin puller relates to mechanical equipment dismouting technical field, the utility model provides a pin puller includes bolt mechanism and coupling mechanism, and bolt mechanism includes first round pin axle and connecting block, and the connecting block is equipped with the recess, and the lateral wall of recess is equipped with the through-hole, and first round pin axle passes the through-hole and is connected with the connecting block, and the connecting block is connected with coupling mechanism. The utility model discloses a having solved the technical problem of pin puller dismouting difficulty among the prior art, having realized the quick installation and the dismantlement to pin puller and locating pin, labour saving and time saving improves pin puller efficiency.

Description

Pin puller

Technical Field

The utility model belongs to the technical field of mechanical equipment dismouting technique and specifically relates to a pin puller is related to.

Background

The installation of parts with position accuracy requirements in mechanical equipment usually adopts cylindrical pins or conical pins to accurately position, so as to ensure the position accuracy of the installation of the parts or restore the original accuracy of the equipment after maintenance. The mounting holes of the positioning pins are all hinged holes with high precision roundness and surface roughness, and the positioning pins and the mounting holes of the connecting parts are connected in an interference fit mode. To facilitate removal of the dowel pins, a pin puller, which is a tool used to pull out cotter pins in fittings or hardware, is commonly used.

Pin puller among the prior art includes the overhead gage usually and rather than fixed connection's connecting rod, connecting rod one end has the external screw thread, be used for with the interior screw-thread fit of locating pin axle, lean on the manpower to screw the screw thread moreover, waste time and energy during the dismouting, the problem that exists because operating personnel error, screw locking distance is not enough and lead to drawing bad pin puller screw thread, pin puller fracture to pop out, in addition, the screw thread is screwed in and is unscrewed repeatedly, still there is the problem of smooth silk, make connecting rod life shorten. When the pin puller is used by an operator, the working efficiency is low, and potential safety hazards also exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pin puller to alleviate the technical problem of pin puller dismouting difficulty among the correlation technique.

In order to solve the technical problem, the utility model discloses the technical means who takes does:

the utility model provides a pair of pin puller includes: a latch mechanism and a connecting mechanism;

the bolt mechanism comprises a first pin shaft and a connecting block, the connecting block is provided with a groove, the side wall of the groove is provided with a through hole, the first pin shaft penetrates through the through hole to be connected with the connecting block, and the connecting block is connected with the connecting mechanism.

As a further technical solution, the latch mechanism includes a first clamp pin, and the first clamp pin is connected to the first pin shaft.

As a further technical scheme, one end, far away from the first clamping pin, of the first pin shaft is provided with a first boss.

As a further technical scheme, coupling mechanism includes coupling assembling and dog, coupling assembling's one end with the connecting block is connected, the other end with the dog is connected.

As a further technical scheme, a second boss is arranged on the outer circumference of the connecting end of the stop block and the connecting component.

As a further technical solution, the connecting assembly includes a screw and a flexible connecting member;

one end of the screw rod is connected with the connecting block, the other end of the screw rod is connected with the flexible connecting piece, and one end of the flexible connecting piece, which is far away from the screw rod, is connected with the stop block.

As a further technical scheme, the screw rod and the connecting block can be connected through threads.

As a further technical scheme, the screw rod and the connecting block can be connected in a welding mode.

As a further technical solution, the flexible connecting member may include a steel wire rope, one end of the steel wire rope is connected to the screw, and the other end of the steel wire rope is connected to the stopper.

As a further technical solution, the flexible connecting member may include a chain, one end of the chain is connected to the screw, and the other end is connected to the stopper.

Compared with the prior art, the utility model provides a pair of the technical advantage that pin puller has does:

the utility model provides a pair of pin puller, including bolt mechanism and coupling mechanism, wherein, bolt mechanism includes first round pin axle and connecting block, and the connecting block is equipped with the recess, and the lateral wall of recess is equipped with the through-hole, and first round pin axle passes the through-hole and can dismantle with the connecting block and be connected, and the connecting block is connected with coupling mechanism.

The utility model provides a pair of pin puller has an advantage:

when the pin puller is used, the first pin shaft penetrates through the positioning pin to be pulled out, the first pin shaft is movably connected into the groove of the connecting block, the connecting mechanism is fixed on relevant mechanical equipment, after the installation is confirmed, the connecting mechanism is moved, the pin mechanism can be driven to pull out the positioning pin, after the installation is finished, the first pin shaft is moved, the positioning pin can be detached from the pin puller, and the pin puller is simple, fast, time-saving and labor-saving in installation and detachment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly introduced below, and it is obvious that the drawings in the following description are 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 structural diagram of a pin puller according to an embodiment of the present invention;

fig. 2 is a front view of the pin remover according to the embodiment of the present invention;

fig. 3 is a side view of a pin puller according to an embodiment of the present invention;

fig. 4 is an installation front view of the pin remover according to the embodiment of the present invention;

fig. 5 is a top view of the pin remover according to the embodiment of the present invention;

fig. 6 is an operation schematic diagram of a pin puller according to an embodiment of the present invention;

fig. 7 is an enlarged view of a first pin connection of the pin remover according to the embodiment of the present invention;

fig. 8 is a block fixing enlarged view of the pin remover according to the embodiment of the present invention.

Icon:

100-a first pin; 200-a first clamp pin; 300-connecting block; 400-screw rod; 500-steel wire rope; 600-a stop block;

700-knuckle arm; 710-a base arm; 720-two-section arm; 730-three section arm;

800-big arm support; 900-a second clamp pin; 1000-second pin; 1100-a guide seat; 1200-Superlift base.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.

The pin puller provided by the embodiment comprises a pin mechanism and a connecting mechanism, wherein the pin mechanism comprises a first pin shaft 100 and a connecting block 300, the connecting block 300 is provided with a groove, the side wall of the groove is provided with a through hole, the first pin shaft 100 penetrates through the through hole to be connected with the connecting block 300, and the connecting block 300 is connected with the connecting mechanism.

In this embodiment, the positioning pin to be pulled out by the pin puller is detachably connected to the pin mechanism of the pin puller, as shown in fig. 1, the pin mechanism is located at one end of the pin puller and is fixedly connected to the connecting mechanism, the first pin 100 of the pin mechanism is used to pass through the positioning pin and be connected to the connecting block 300, and the positioning pin passes through the groove of the connecting block 300 and is located in the connecting block 300. It should be noted that the connection mode of the first pin 100 and the connection block 300 may be designed to be a detachable connection mode, in which the first pin 100 passes through the through hole to be detachably connected with the positioning pin; the first pin 100 may also be designed as a telescopic structure, one end of which is fixed on the sidewall, and the other end of which can freely extend and contract to pass through the groove and the through hole to be detachably connected with the positioning pin. In specific application, with reference to fig. 4 and 5, when the positioning pin to be pulled out, i.e., the second pin 1000, passes through the guide seat 1100 and the super lift base 1200 and is movably connected with the knuckle arm 700, and the first pin 100 is connected with the second pin 1000, as shown in fig. 7, a through hole adapted to the first pin 100 is formed in the bottom end of the second pin 1000, the first pin 100 passes through the through hole to connect the second pin 1000 to the connection block 300, and when the connection mechanism of the pin puller is fixed to the large arm support 800, with reference to fig. 4 and 8, the bottom end of the connection mechanism passes through the side groove in the large arm support 800 and fastens the side groove through the second clamp pin 900, so that the connection mechanism of the pin puller is firmly clamped on the large arm support 800, and thus the installation of the pin puller is completed. As shown in fig. 4, the arm 700 includes a basic arm 710, a second arm 720 and a third arm 730, and has a reciprocating telescopic function, the arm support 800 is fixed on the side of the third arm 730, and when pulling out the pin, the third arm 730 extends out as shown in fig. 6, the arm support 800 drives the connecting mechanism of the pin puller to move downwards, so that the second pin 1000 connected with the pin mechanism is pulled out along the guide seat 1100 from the super base 1200, the first pin 100 is detached to separate the second pin 1000 from the connecting block 300, and a pin pulling operation is completed. In the whole process, the bolt mechanism is connected with the second pin shaft 1000, and the connecting mechanism is fixed with the large arm support 800, so that the operation is simple, and time and labor are saved; the second pin 1000 is simple in the process of pulling out and separating, and easy to operate.

Further, in addition to the above, the pin puller pin design also increases its operating range. Generally, in the current assembly work process, the cylindrical pins are the most commonly used positioning pins, but the cylindrical pins have different sizes in application, namely standard cylindrical pins such as psi 6, psi 10, psi 16 and psi 20, and various non-standard cylindrical pins. When various cylindrical pins are pulled out, a connecting rod which is suitable for the size of the cylindrical pin needs to be equipped in the pin pulling device in the prior art, the cylindrical pins are various in types, and the connecting rods matched with the cylindrical pins also need to be various, so that the waste of parts and the increase of cost are caused. And the emergence of above-mentioned problem has been avoided in the design of bolt mechanism, and first round pin axle 100 can be connected with the cylindric lock of various sizes, and the recess of connecting block 300 can hold the cylindric lock of different specifications, has reduced the variety of pin puller structure, has saved the cost.

In an alternative embodiment of this embodiment, the latch mechanism includes a first clamping pin 200, and the first clamping pin 200 is connected to the first pin 100.

In the present embodiment, as shown in fig. 2 and 3, a through hole is provided at one end of the first pin 100, and the first clamping pin 200 is inserted through the through hole to define the first pin 100 in the through hole of the connecting block 300. During specific application, as shown in fig. 7, the first pin 100 passes through the second pin 1000 and is limited in the groove of the connecting block 300, and at this time, the first clamping pin 200 is used to prevent the first pin 100 from being separated from the through hole due to excessive displacement in the through hole, so that the second pin 1000 fails to be connected. It should be noted that the limitation of the first pin 100 is not limited to the through hole of the first pin 100 matching with the first clamping pin 200, but other limitation methods may also be used, for example, an external thread is provided at one end of the first pin 100, and the limitation is performed by connecting a nut matching with the external thread.

In an optional technical solution of this embodiment, a first boss is disposed at an end of the first pin 100 away from the first clamp pin 200.

Specifically, as shown in fig. 2, after the first pin 100 passes through the through hole of the connecting block 300, the design of the first boss limits the distance that the first pin 100 can pass through the through hole, and in combination with the first clamping pin 200 connected to the other end of the first pin 100, the first boss and the first clamping pin 200 act together to limit the first pin 100, so as to ensure that the position of the bottom end of the second pin 1000 is always within the allowable range of the groove of the connecting block 300 after the first pin 100 is connected to the second pin 1000, and the phenomenon that the first pin 100 is separated from the second pin 1000 when the pin puller is used will not occur. It should be pointed out here that, spacing between first round pin axle 100 and the connecting block 300 through-hole is not restricted to the first boss structure of design, and in reasonable scope, can change first boss into the external screw thread, connects soon with the nut of external screw thread cooperation, carries on spacingly. In combination with the working property of the first pin 100, the nut is always connected to the first pin 100 after the pin puller is installed or the pin pulling work is completed, and the nut does not need to be dismounted, so that the design does not affect the efficiency of the pin pulling work.

In the optional technical scheme of this embodiment, coupling mechanism includes coupling assembling and dog 600, and coupling assembling's one end is connected with connecting block 300, and the other end is connected with dog 600.

Specifically, as shown in fig. 3, the connecting assembly is located at the middle position of the pin puller, and the stopper 600 and the pin pulling mechanism are respectively located at the two ends of the pin puller. When in use, as shown in fig. 8, the connecting assembly passes through the side groove on the large arm support 800, the side groove is provided with a through hole, the second clamping pin 900 passes through the through hole to fasten the side groove, so that the connecting assembly of the pin puller is firmly clamped on the large arm support 800, the stopper 600 is located at the bottom of the large arm support 800, and the end surface of the stopper 600 connected with the connecting assembly is abutted against the bottom surface of the large arm support 800. When the pin puller works, as shown in fig. 6, the three-section arm 730 extends out to drive the large arm support 800 to move, the stop block 600 moves along with the large arm support 800 and drives the connecting component connected with the large arm support to move, and then the pin mechanism drives the second pin shaft 1000 to move and pull out.

In the optional technical scheme of this embodiment, the outer circumference of the connecting end of the stop 600 and the connecting assembly is provided with a second boss.

Specifically, as shown in fig. 3 and 8, the upper end of the second boss abuts against the bottom surface of the large arm support 800, and when the large arm support 800 moves, the second boss is designed to ensure that the stopper 600 moves synchronously with the large arm support 800, so that the stopper 600 does not pass through the lateral groove of the large arm support 800 and separate from the knuckle arm 700 when the pin puller pulls the pin under stress, and the pin puller is ensured to be in a normal working state.

In the optional technical scheme of this embodiment, coupling assembling includes screw rod 400 and flexible connectors, and the one end of screw rod 400 is connected in connecting block 300, and the other end is connected with flexible connectors, and flexible connectors's the one end of keeping away from screw rod 400 is connected with dog 600.

Specifically, as shown in fig. 3, the screw 400 and the flexible connector indirectly connect the latch mechanism to the stop 600. When the pin puller is installed, as shown in fig. 4, the pin mechanism at one end of the pin puller is connected with the second pin shaft 1000, and the stop block 600 at the other end is fixed and limited with the large arm support 800, it needs to be considered that the distance between the second pin shaft 1000 and the large arm support 800 is different from the distance between two connecting position points of the pin puller, and a flexible connecting piece is needed to eliminate the difference between the two distances, thereby ensuring that the pin puller is installed smoothly. When the pin puller works, as shown in fig. 6, the pin mechanism is connected with the second pin shaft 1000, the flexible connecting piece penetrates through the side groove of the large arm support 800 and is clamped in the side groove, the second boss on the stop block 600 is supported at the bottom of the side groove, the three sections of arms 730 extend out, the stop block 600 drives the flexible connecting piece to stretch straight, and the pin mechanism is driven by the tensile force of the flexible connecting piece to pull out the second pin shaft 1000.

In an optional technical solution of this embodiment, the screw 400 and the connecting block 300 may be connected by a thread.

As shown in fig. 3, the screw 400 is fixedly connected with the connecting block 300, and in this embodiment, the screw 400 is preferably fixed with the connecting block 300 by a screw thread. Specifically, one end of the connecting block 300, which is far away from the first pin 100, is provided with an internal thread, and the corresponding part of the screw 400 is provided with an external thread, so that the two parts form a detachable fixed connection. According to the use property of the screw rod 400, the connection with the connecting block 300 does not need to be disassembled under the general condition, and the screw rod 400 can be used all the time after one-time connection, so that the screw rod 400 does not need to be repeatedly screwed in and out, the problem of wire sliding is avoided, and meanwhile, the problem that the screw rod 400 is separated from the connecting block 300 when the pin is pulled out due to insufficient thread locking distance does not exist.

In an optional technical solution of this embodiment, the screw 400 and the connecting block 300 may be connected by welding.

Specifically, as mentioned above, the screw 400 and the connecting block 300 are fixedly connected, and the pin remover does not need to be separated during installation and after the pin remover is completed, so that the fixed connection of the screw and the pin remover is not limited to threaded connection, and welding can be used. When the flexible connecting piece stretches to exert a pulling force towards the extending direction of the three-section arm 730 on the screw rod 400, the two are firmly connected by welding and fixing, and the pulling force in a wider range can be borne.

In an optional technical solution of this embodiment, the flexible connection member may include a steel wire rope 500, one end of the steel wire rope 500 is connected with the screw 400, and the other end is connected with the stopper 600.

As shown in fig. 3, the flexible connector serves as a connector for connecting the screw 400 and the stopper 600 in series, as a gap-eliminating member for facilitating the installation of the pin puller, and as a tension member for pulling the latch mechanism to pull out the second pin 1000 when the pin puller is used, and in this embodiment, preferably, a steel wire rope 500 is used. The steel wire rope 500 is high in strength, capable of bearing pulling force generated during pin pulling, light in dead weight and free from influence on use feeling caused by overweight of the pin puller.

In an optional technical solution of this embodiment, the flexible connection member may include a chain, one end of the chain is connected with the screw 400, and the other end is connected with the stopper 600.

Specifically, the chain may also be used as a flexible connecting member for connecting the screw 400 and the stopper 600, and the chain is used as a traction chain to connect the screw 400 and the stopper 600, bear a pulling force, and pull the latch mechanism to pull out the second pin 1000.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made on the technical solutions described in the foregoing embodiments, or some or all of the technical features of the present invention may be replaced by other technical features of the present invention without departing from the scope of the technical solutions of the present invention.

Claims

1. A pin puller, comprising: a latch mechanism and a connecting mechanism;

the bolt mechanism comprises a first pin shaft (100) and a connecting block (300), the connecting block (300) is provided with a groove, the side wall of the groove is provided with a through hole, the first pin shaft (100) penetrates through the through hole to be connected with the connecting block (300), and the connecting block (300) is connected with the connecting mechanism.

2. The pin puller according to claim 1, wherein the latch mechanism comprises a first clamping pin (200), the first clamping pin (200) being connected to the first pin shaft (100).

3. The pin puller according to claim 2, wherein the first pin (100) is provided with a first boss at an end thereof remote from the first clamping pin (200).

4. The pin puller according to claim 1, wherein the connecting mechanism comprises a connecting assembly and a stopper (600), the connecting assembly being connected to the connecting block (300) at one end and to the stopper (600) at the other end.

5. The pin puller according to claim 4, wherein a second boss is provided on an outer circumference of the stopper (600) and the connecting end of the connecting member.

6. The pin puller according to claim 4, wherein the connection assembly comprises a screw (400) and a flexible connection;

one end of the screw rod (400) is connected to the connecting block (300), the other end of the screw rod is connected to the flexible connecting piece, and one end of the flexible connecting piece, which is far away from the screw rod (400), is connected to the stop block (600).

7. The pin puller according to claim 6, wherein the screw (400) and the connecting block (300) are threadably connected.

8. The pin puller according to claim 6, wherein the screw (400) and the connecting block (300) are connectable by welding.

9. The pin puller according to claim 6, wherein the flexible connection member comprises a wire rope (500), one end of the wire rope (500) is connected with the screw (400) and the other end is connected with the stopper (600).

10. The pin puller according to claim 6, wherein said flexible connection member comprises a chain, one end of said chain being connected to said screw (400) and the other end being connected to said block (600).