CN106141988A - Pin removal - Google Patents

Abstract

The invention provides a pin puller, which belongs to the field of overhead power transmission lines, and includes a fixing part, a pin puller and a positioning part. The pin puller includes at least two pin puller rods arranged side by side. The outer side of the rod is covered with an insulating layer, the pin pulling rod is rotatably arranged on the fixing part, and the length direction of the positioning part is perpendicular to the length direction of the pin pulling rod. Through the positioning piece against the socket, one end of the pin puller rod extends into the locking pin, so that the pin puller forms a lever, and a certain force is applied to the end of the pin puller rod away from the locking pin, and the pin puller rod is locked against the lock. The locking pin exerts force and pulls it out. First, the principle of leverage is used to make the pulling out of the locking pin easier. Second, it is easier to apply force, and force can be applied to the end of the pin puller from different angles. , the operation is more convenient. Secondly, the pin puller can be operated with one hand to pull out the pin. The pin pulling process is safer and more reliable, and the power supply can be uninterrupted during the pin pulling process.

Description

Pin puller

technical field

The invention relates to the field of overhead power transmission lines, in particular to a pin puller.

Background technique

Insulator, commonly known as insulating porcelain bottle, is a device installed between conductors of different potentials or between conductors and ground potential components. It can withstand voltage and mechanical stress. It is a special insulation control that can be used in overhead transmission lines. play an important role.

Locking pins, commonly known as spring pins, are available in two types, R-shaped and W-shaped, and are important components of suspension insulator strings. With the development of the power transmission industry, the amount of insulators is increasing, and the amount of locking pins is also increasing. The weight of the locking pins is only about 1/250 of the insulator, but if the insulator string is not equipped with locking pins or the quality of the locking pins If it is unqualified or even improperly installed, the possible losses are immeasurable, and there is a great potential safety hazard.

When replacing the insulating porcelain bottle on the overhead transmission line, it is necessary to use wire pliers to manually pull out the pin, that is, the staff uses wire pliers to clamp the locking pin, and then pulls out the locking pin forcefully, because the pin is pulled out at high altitude. Operation, inconvenient operation, low safety, and because it is difficult to ensure that the direction of force applied when pulling out the pin is consistent with the pulling out direction of the locking pin, resulting in insufficient strength, the locking pin is not easy to be pulled out.

Contents of the invention

The present invention provides a pin puller, which improves the above problems.

The present invention is achieved like this:

A pin puller, comprising a fixing piece, a pin puller and a positioning piece, the pin puller includes at least two pin puller rods arranged side by side, the pin puller is a square rod, and the outer side of the pin puller includes Covered with an insulating layer, the pin pulling rod is rotatably arranged on the fixing part, and the length direction of the positioning part is perpendicular to the length direction of the pin pulling rod.

The fixing part is used to install the pin pulling part and the positioning part so that they can work normally. Taking the W-shaped locking pin as an example, the bottom end of the pin pulling rod is inserted into the locking pin, and the positioning part is against the socket. The socket is used for The components for installing the locking pin, the locking pin and the socket are not part of the present invention, and are only used to describe the positional relationship of other components.

When performing the pin pulling operation, pull the pin pulling lever and apply a certain force to the top of the pin pulling lever. The pin pulling lever can rotate in the plane. The axis direction of the rod is vertical. The positioning piece is against the socket all the time, and the pin puller forms a lever, and the bottom end of the pin puller exerts a certain active force on the locking pin to pull it out. According to needs, the length between the two ends of the pin pulling rod and the axis of rotation can be adjusted, so that the locking pin can be pulled out more easily.

The pin puller in the present invention is mainly suitable for W-shaped locking pins, of course, it is also possible to use it for R-shaped or other locking pins.

Further, the pin pulling rod is inserted into the locking pin, and there are at least two positioning members, and the positioning members can be close to or away from the socket and resist the socket for inserting the locking pin.

The distance between the end of the locking pin and the socket is not fixed. On the one hand, when the pin pulling rod of the pin puller is perpendicular to the pulling out direction of the locking pin, the bottom end of the pin pulling rod is aligned with the pulling out direction of the locking pin. The greater the component force, therefore, it is necessary to adjust the fulcrum of the positioning piece in order to reduce the labor intensity of the staff and facilitate the extraction of the locking pin. On the other hand, the fixed length of the positioning piece is difficult to adapt to different situations, that is, locking The distance between the end of the pin and the socket is indeterminate. If the pin puller cannot be pulled out even after the pin puller is rotated at a large angle, the pin puller cannot work normally. After the positioning piece can be adjusted, adjust the pin puller and The length between the sockets, even if the distance between the end of the locking pin and the socket is relatively large or small, the locating member can be pressed against the socket, and the application range is wider.

Further, the positioning part is screwed to the fixing part.

The position of the positioning member can be adjusted by screwing the positioning member, and then the length of the part of the positioning member located between the pin pulling rod and the socket can be adjusted, the operation method is relatively simple, and the manufacturing cost is low.

Further, two corresponding reverse synchronous structures are arranged in the fixing part, and there are two pin pulling rods, and the top ends of the two pin pulling rods are connected and fixed in a "U" shape by a first cross bar, The bottom end of the pin pulling rod is provided with a "U" shaped piece for clamping the locking pin, and the fixing piece is provided with a receiving groove for accommodating the locking pin;

Each of the reverse synchronous structures includes a parallel four-bar linkage mechanism, a first adjusting member and a second adjusting member, the first adjusting member and the second adjusting member are respectively located on both sides of the receiving groove, and the The parallel four-bar linkage structure is composed of the pin pulling rod, the second cross bar and the synchronizing rod, the synchronizing rod is two, the second cross bar is hinged to the pin pulling rod and the second cross bar is connected to the The synchronous rod is hinged, the synchronous rod is arranged in parallel with the pin pulling rod, and the bottom end of the synchronous rod is rotatably arranged on the fixing member;

The first adjusting member and the second adjusting member respectively include a first ratchet, a second ratchet, a ratchet, a gear and a rack, and the first ratchet of the first adjusting member is rotatably arranged on the pulling pin The first ratchet of the second adjusting member is rotatably arranged on the synchronous lever and resists the ratchet. The ratchet coincides with the wheel axis of the gear and moves synchronously. The gear and The racks are engaged, the racks are slidably arranged on the fixing member, one end of the racks extends into the receiving groove, and one of the racks is fixedly connected or integrally formed with the positioning member, so that The second ratchet resists the ratchet or the rack and is used to prevent the rack from moving when the pin is pulled out;

When the pin pulling lever is in the pin pulling state, the rack of the first adjusting member is against the socket and the position of the second adjusting member remains unchanged; when the pin pulling lever is in the reverse adjusting state, the The rack of the second adjustment member is against the socket, the length of the rack of the first adjustment member in the receiving groove increases, and the length of the rack of the second adjustment member decreases.

In the actual operation process, due to the high-altitude operation, it is often necessary to operate with one hand, and because the pulling-out length of the locking pin is uncertain, it is necessary to adjust the positioning part several times when adopting the above scheme. If it is removed and adjusted, Then the workload of the staff has been greatly increased. If one hand grasps the pin puller and the other hand adjusts, there will be certain potential safety hazards. After adopting this scheme, the accommodating groove is clamped on the socket, the rack and the locating member are against the socket, when the pin is pulled out, the pin pulling lever is pulled, the rack (or locating member) of the first adjusting member is stressed, and the second The rack of the adjustment member bears little force or basically no force, no force occurs between the first ratchet and the ratchet, the second ratchet resists the ratchet and makes it unable to rotate, the rack of the first adjustment member and the second ratchet The rack of the second adjustment part will not move, and the pin can be pulled out normally; when the pin puller is pulled in the opposite direction, the rack of the second adjustment part will be stressed, and the rack (or positioning part) of the first adjustment part will be stressed or basically Without force, the first ratchet drives the ratchet to rotate, and there is no force between the second ratchet and the ratchet, and the ratchet drives the gear to rotate, so that the rack (or positioning part) and the fixed part move relative to each other, and the position of the rack Keeping constant and against the socket all the time, the moving direction of the fixed piece and the locking pin is consistent, so that the length of the rack of the first adjusting piece located in the receiving groove is increased to realize the position adjustment of the positioning piece, and then reciprocate, Until the locking pin is pulled out, the pin puller with this structure can be operated with one hand, the operation method is simple and convenient, the operation process is safer and more reliable, and the potential safety hazard is effectively reduced. Since the force on the rack of the second adjusting member is relatively small during reverse rotation, the force can be ignored to cause the rack of the second adjusting member to move abnormally, and the sum of the lengths of the two racks in the accommodation groove can be basically Remain unchanged, here does not mean absolutely unchanged. The integral formation of the positioning piece and the rack can also be considered that the positioning piece is the rack, and the rack is the positioning piece.

Further, the fixing part includes a main part and an assembly part, the assembly part is detachably connected to the main part, and the number of the four assembly parts corresponds to the positions of the gears respectively;

A cavity is provided between the assembly and the main body, and a top plate is slidably embedded in the cavity, and a return spring is provided between the top plate and the bottom wall of the cavity. The two side walls of each are provided with a notch, the rack is passed through the notch, and the return spring pushes the top plate to mesh the rack with the gear;

The side wall of the assembly is provided with a through hole, the ratchet and the gear are synchronously moved through the first rotating shaft, the first rotating shaft is passed through the through hole, and the pin puller and the synchronous The rods are rotated on the fixing member through the second rotating shaft, the axis line of the second rotating shaft coincides with the axis line of the first rotating shaft, and the second rotating shaft passes through the first rotating shaft, so One end of the second rotating shaft is rigidly connected to the main body, the ratchet is located outside the cavity, the gear is located in the cavity, and the second ratchet is disposed on the outer wall of the assembly.

The assembly can be disassembled from the main body and used to install structures such as the top plate. The specific process of installation can be as follows: firstly, the first rotating shaft is passed through the through hole, and the ratchet and/or gear are installed. Between the ratchet and the first rotating shaft, Both the gear and the first rotating shaft can be detachably connected or fixedly connected. Of course, the three are integrally formed. side; then secure the return spring and the top plate to the main part and place the rack in the gap, at this time the return spring is compressed; then install the assembly on the main part, at this time, the second rotating shaft runs through the first rotating shaft, and the gear is in the Under the action of the return spring, it meshes with the rack; Finally, install the pin pulling rod or the synchronous rod, install the first cross bar between the pin pulling rod and the pin pulling rod, and install the second cross bar on the pin pulling rod between the sync rod. The above installation order can be changed, omitted, added, etc. After the installation is completed, the rack is pressed down as required, the return spring is compressed, the rack and the gear are disengaged, and the two racks are pressed against the socket and then released, the gear and the rack are meshed and can work normally.

Further, one end of the rack of the second adjustment member is provided with a stopper, the stopper is located in the receiving groove, and a limiting compression spring is arranged between the stopper and the main body, and the limiter The compression spring is sheathed on the outside of the rack.

The stopper is against the socket, and the limit pressure spring can counteract a part of the force when the pin puller rotates in reverse, so that the position control of the rack is more precise.

Further, the notch is a square through hole, and the vertical height of the square through hole is greater than the thickness of the rack.

The thickness of the directional through hole is such that the rack can move down, allowing the rack to disengage from the pinion for adjustment.

Further, a pressing plate is arranged in the cavity corresponding to the second adjusting member, the pressing plate is arranged at the bottom of the return spring, and a tightening bolt is arranged at the bottom of the cavity, and the tightening bolt penetrates The bottom of the cavity is against the pressing plate.

When the pin puller is reversely adjusted, because the rack of the second adjusting member moves under the action of external force, the gear rotates and the distance between the two racks increases, which affects the normal use of the pin puller. The jacking bolts are threadedly connected to the bottom of the cavity, and the length of the jacking bolts extending into the cavity can be adjusted by screwing the jacking bolts, so that the jacking bolts withstand the pressure plate, the pressure plate squeezes the return spring, and the top plate receives an upward force The greater the force, it is not easy to drop, the pressure exerted by the top plate on the rack increases, and the friction force increases accordingly, which can avoid the abnormal movement of the rack caused by the reverse adjustment of the pin plate, and effectively ensure the stability of the second adjustment member. Normal use.

Further, the assembly is in the shape of a plate, and the assembly is connected to the main body by a threaded fastener.

The connection method of threaded fasteners is relatively simple and reliable.

Further, the first crossbar is provided with a handle cover, and the handle cover is made of rubber material.

The handle glove makes the staff feel more comfortable. In addition, the handle glove can also be made of insulating material to improve safety performance.

Further, the first ratchet is correspondingly provided with a spring or a torsion spring for making the first ratchet against the ratchet, and the second ratchet is correspondingly provided with a spring or torsion spring for making the second ratchet against the ratchet. Ratchet spring or torsion spring.

The spring or torsion spring can ensure that the first ratchet and the second ratchet are always against the ratchet, so as to avoid abnormal rotation of the gear.

Compared with the prior art, the beneficial effect of the present invention is: through the positioning piece against the socket, one end of the pin puller rod extends into the locking pin, so that the pin puller forms a lever to lock the distance away from the pin puller rod. When a certain force is applied to one end of the pin, the pin puller will exert force on the locking pin and pull it out. First, the lever principle is used to make the locking pin easier to pull out. Second, it is easier to apply force. Forces can be applied to the end of the pin puller from different angles, and the operation is more convenient. Secondly, the pin puller can be operated with one hand to pull out the pin.

Description of drawings

Fig. 1 is a schematic diagram of a pin puller with a structure provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram of a pin puller with another structure provided by an embodiment of the present invention;

Fig. 3 is a side view of Fig. 2;

Fig. 4 is a schematic structural diagram of Fig. 2 after the assembly is removed;

Fig. 5 is a sectional view of Fig. 3;

Fig. 6 is a kind of schematic structural diagram of Fig. 2;

FIG. 7 is a partially enlarged schematic diagram of FIG. 5 .

Fixing part 101; pin pulling rod 102; positioning part 103; locking pin 104; socket 105; first cross bar 106; Adjusting member 111; second adjusting member 112; first ratchet 113; second ratchet 114; ratchet 115; gear 116; rack 117; main body 118; Notch 123; first shaft 124; second shaft 125; block 126; limit compression spring 127; pressure plate 128;

detailed description

When replacing the insulating porcelain bottle on the overhead transmission line, it is necessary to use wire pliers to manually pull out the pin, that is, the staff uses wire pliers to clamp the locking pin, and then pulls out the locking pin forcefully, because the pin is pulled out at high altitude. Operation, inconvenient operation, low safety, and because it is difficult to ensure that the direction of force applied when pulling out the pin is consistent with the pulling out direction of the locking pin, resulting in insufficient strength, the locking pin is not easy to be pulled out.

In order to improve the above problems, the present invention provides a pin puller, including a fixing piece, a pin pulling piece and a positioning piece, the pin pulling piece includes at least one pin pulling lever arranged side by side, the pin pulling lever is rotatably arranged on the fixing piece, The length direction of the positioning piece is perpendicular to the length direction of the pin pulling rod. Through the positioning piece against the socket, one end of the pin puller rod extends into the locking pin, so that the pin puller forms a lever, and a certain force is applied to the end of the pin puller rod away from the locking pin, and the pin puller rod is locked against the lock. The locking pin exerts force and pulls it out. First, the principle of leverage is used to make the pulling out of the locking pin easier. Second, it is easier to apply force, and force can be applied to the end of the pin puller from different angles. , the operation is more convenient, and secondly, the pin puller can be operated with one hand to pull out the pin, and the pin pulling process is safer and more reliable.

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the terms "first", "second", "third" and so on are only used to distinguish descriptions, and should not be understood as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Fig. 1 is a schematic diagram of a pin puller with a structure provided by an embodiment of the present invention; Fig. 2 is a schematic diagram of a pin puller with another structure provided by an embodiment of the present invention; Fig. 3 is a side view of Fig. 2; Fig. 4 is a diagram 2 is a schematic structural view after removing the assembly; FIG. 5 is a cross-sectional view of FIG. 3; FIG. 6 is a schematic structural view of FIG. 2; FIG. 7 is a partially enlarged schematic view of FIG.

As shown in Figures 1-7, Embodiment 1 of the present invention provides a pin puller, including a fixing part 101, a pin pulling part and a positioning part 103, and the pin pulling part includes at least two pin pulling rods 102 arranged side by side, The pin pulling rod 102 is a square rod, and the outer side of the pin pulling rod 102 is covered with an insulating layer. The insulating layer can be made of insulating rubber, insulating paint, etc. The pin pulling rod 102 is rotated and arranged on the fixing part 101, and the length direction of the positioning part 103 is in line with the pulling The length direction of the pin rod 102 is vertical, and the vertical here does not mean that the two are vertical at all times, but when the pin rod 102 reaches a certain position, the two can be vertical. The positioning piece 103 is preferably rod-shaped or strip-shaped. The number of positioning pieces 103 can be one or more than one. The preferred result is two. The structure is not too complicated, and the pin puller is not easy to shake when pulling out the pin.

The fixing part 101 is used to install the pin pulling part and the positioning part 103, so that both can work normally. Taking the W-shaped locking pin 104 as an example, the bottom end of the pin pulling rod 102 is inserted into the locking pin 104, and the positioning part 103 is against the locking pin 104. The socket 105, the socket 105 is a component for installing the locking pin 104, the locking pin 104 and the socket 105 are not part of the present invention, and are only used to describe the positional relationship of other components.

When carrying out the pin removal operation, pull the pin removal lever 102, apply certain force to the top of the pin removal lever 102, the pin removal lever 102 can rotate in the plane, for example if the pin removal lever 102 is columnar, the rotation of the pin removal lever 102 The direction may be perpendicular to the axial direction of the pin pulling lever 102 . The positioning part 103 is against the socket 105 all the time, and the pin puller forms a lever, and the bottom end of the pin puller rod 102 exerts a certain active force on the locking pin 104 to pull it out. According to needs, the length between the two ends of the pin pulling rod 102 and the axis of rotation can be adjusted, so that the locking pin 104 can be pulled out more easily.

The pin puller in the present invention is mainly suitable for the W-shaped locking pin 104 , of course, it is also possible to use it for the R-shaped or other locking pins 104 .

As a preferred solution of this embodiment, the pin pulling rod 102 is inserted into the locking pin 104, and there are at least two positioning members 103, preferably two in this embodiment, and the positioning members 103 can be close to or far away from the socket 105 and resist the The socket 105 into which the locking pin 104 is inserted.

The distance between the end of the locking pin 104 and the socket 105 is indefinite. On the one hand, when the pulling-out bar 102 of the pin puller is perpendicular to the pulling-out direction of the locking pin 104, the bottom end of the pin pulling bar 102 will The greater the force component in the pull-out direction of the locking pin 104 is, therefore, it is necessary to adjust the fulcrum of the positioning member 103 so as to reduce the labor intensity of the staff and facilitate the extraction of the locking pin 104. On the other hand, the length of the positioning member 103 is fixed. It is difficult to adapt to different situations, that is, the distance between the end of the locking pin 104 and the socket 105 is indefinite. If the pin puller 102 is rotated at a large angle, the pin puller cannot be pulled out. After the member 103 can be adjusted, adjust the length between the pin pulling rod 102 and the socket 105 as required, even if the distance between the end of the locking pin 104 and the socket 105 is relatively large or small, the positioning member 103 can be held against Socket 105, wider scope of application.

The positioning member 103 can be adjusted on the fixing member 101 in a variety of ways, for example, but not limited to the following schemes can be adopted:

In the first solution, the positioning member 103 is screwed to the fixing member 101 .

By screwing the positioning member 103, the position of the positioning member 103 can be adjusted, and then the length of the part of the positioning member 103 located between the pin pulling rod 102 and the socket 105 can be adjusted. The operation method is relatively simple and the manufacturing cost is low.

In the second solution, two corresponding reverse synchronous structures are arranged in the fixing part 101, and there are two pin pulling rods 102, and the top ends of the two pin pulling rods 102 are connected and fixed by the first cross bar 106 to form a "U". Shape, the bottom end of the pin pulling rod 102 is provided with a "U" shaped piece 107 for clamping the locking pin 104, and the fixing piece 101 is provided with a receiving groove 108 for accommodating the locking pin 104;

Each reverse synchronous structure includes a parallel four-bar linkage mechanism, a first adjustment member 111 and a second adjustment member 112, and the first adjustment member 111 and the second adjustment member 112 are respectively located on both sides of the receiving groove 108, and the parallel four-bar linkage structure It is composed of a pin puller 102, a second crossbar 109 and a synchronization rod 110. There are two synchronization rods 110. The second crossbar 109 is hinged with the pin puller 102 and the second crossbar 109 is hinged with the synchronization rod 110. The synchronization rod 110 It is arranged in parallel with the pin pulling rod 102, and the bottom end of the synchronization rod 110 is rotated and arranged on the fixing member 101;

The first adjusting part 111 and the second adjusting part 112 respectively comprise a first ratchet 113, a second ratchet 114, a ratchet 115, a gear 116 and a rack 117, and the first ratchet 113 of the first adjusting part 111 is rotatably arranged on the The pin rod 102 is against the ratchet 115, the first ratchet 113 of the second adjustment member 112 is rotated on the synchronous rod 110 and against the ratchet 115, the ratchet 115 coincides with the wheel axis of the gear 116 and moves synchronously, the gear 116 and the rack 117 meshes, the rack 117 is slidably arranged on the fixing member 101, one end of the rack 117 extends into the receiving groove 108, one of the racks 117 is fixedly connected or integrally formed with the positioning member 103, and the second ratchet 114 is against the ratchet 115 or The rack 117 is also used to prevent the rack 117 from moving when the pin is pulled out;

When the pin pulling lever 102 is in the pin pulling state, the rack 117 of the first adjusting member 111 is against the socket 105 and the position of the second adjusting member 112 remains unchanged. When the pin pulling lever 102 is in the reverse adjustment state, the second adjusting member The rack 117 of 112 is against the socket 105 , the length of the rack 117 of the first adjustment member 111 in the receiving groove 108 increases and the length of the rack 117 of the second adjustment member 112 decreases.

In the actual operation process, due to the high-altitude operation, it is often necessary to operate with one hand, and because the pulling-out length of the locking pin 104 is uncertain, it is necessary to adjust the positioning member 103 several times when the above-mentioned solution is adopted. Adjustment, then greatly increased the workload of the staff, if one hand grabs the pin puller 102, and the other hand adjusts, then there will be certain potential safety hazards. After adopting this scheme, the accommodating groove 108 is clamped on the socket 105, the rack 117 and the positioning member 103 are against the socket 105, and when the pin is pulled out, the pin pulling lever 102 is pulled, and the rack 117 of the first adjusting member 111 (or Positioning member 103) is stressed, the rack 117 of the second adjusting member 112 is under less force or substantially no force, no force occurs between the first ratchet 113 and the ratchet 115, and the second ratchet 114 is against the ratchet 115 And make it unable to rotate, the rack 117 of the first adjusting part 111 and the rack 117 of the second adjusting part 112 will not move, and the pin can be pulled out normally; The rack 117 is stressed, and the rack 117 (or positioning member 103) of the first adjusting part 111 is stressed or substantially unstressed. The first ratchet 113 drives the ratchet 115 to rotate, and there is no gap between the second ratchet 114 and the ratchet 115. When an active force occurs, the ratchet 115 drives the gear 116 to rotate, thereby making the rack 117 (or positioning member 103) move relative to the fixed member 101, the position of the rack 117 remains unchanged and always against the socket 105, and the fixed member 101 and the lock The direction of movement of the tight pin 104 is consistent, so that the length of the rack 117 of the first adjustment member 111 located in the receiving groove 108 is increased to realize the position adjustment of the positioning member 103, and then reciprocate until the locking pin 104 is pulled out , The pin puller with this structure can be operated with one hand, the operation method is simple and convenient, the operation process is safer and more reliable, and the potential safety hazard is effectively reduced. Since the force on the rack 117 of the second adjustment member 112 is relatively small during reverse rotation, the abnormal movement of the rack 117 of the second adjustment member 112 due to the force can be ignored, and the two racks 117 are located in the receiving groove 108 The sum of the lengths of can be basically kept constant, which does not mean absolutely constant here. The positioning member 103 and the rack 117 are integrally formed. It can also be considered that the positioning member 103 is the rack 117 , and the rack 117 is the positioning member 103 .

As a preferred solution of the second solution, the fixing part 101 includes a main part 118 and an assembly part 119, the assembly part 119 and the main part 118 are detachably connected, and the number of the assembly parts 119 is four and respectively corresponding to the position of the gear 116;

A cavity 120 is provided between the assembly 119 and the main body 118, and a top plate 121 is slidably embedded in the cavity 120. A return spring 122 is arranged between the top plate 121 and the bottom wall of the cavity 120. The opposite two sides of the cavity 120 Each side wall is provided with a notch 123, the rack 117 is pierced through the notch 123, and the return spring 122 pushes the top plate 121 to make the rack 117 mesh with the gear 116;

The side wall of the assembly 119 is provided with a through hole, the ratchet 115 and the gear 116 move synchronously through the first rotating shaft 124, the first rotating shaft 124 is penetrated in the through hole, and the pin pulling rod 102 and the synchronizing rod 110 respectively pass through the second rotating shaft 125 The rotation is arranged on the fixed part 101, the axis line of the second rotating shaft 125 coincides with the axis line of the first rotating shaft 124, the second rotating shaft 125 passes through the first rotating shaft 124, and one end of the second rotating shaft 125 is rigidly connected with the main body 118 , the ratchet 115 is located outside the cavity 120 , the gear 116 is located inside the cavity 120 , and the second ratchet 114 is disposed on the outer wall of the assembly 119 .

The assembly 119 can be disassembled from the main body 118 to install structures such as the top plate 121. The specific process of installation can be as follows: firstly, the first rotating shaft 124 is passed through the through hole, and the ratchet 115 and/or gear 116 are installed. The ratchet 115 Between the gear 116 and the first rotating shaft 124, between the gear 116 and the first rotating shaft 124 can be detachably connected or fixedly connected, of course, the three are also possible, but some improvements need to be made on the structure of the assembly 119, The ratchet 115 and the gear 116 can be installed on both sides of the assembly 119; then the return spring 122 and the top plate 121 are safely placed at the main body part 118 and the tooth bar 117 is placed in the gap 123, and the return spring 122 is compressed; then The assembly 119 is installed on the main body 118. At this time, the second rotating shaft 125 runs through the first rotating shaft 124, and the gear 116 meshes with the rack 117 under the action of the return spring 122; finally, the pin pulling lever 102 or the synchronizing lever 110 are installed , and the first cross bar 106 is installed between the pin pulling rod 102 and the pin pulling rod 102 , and the second cross bar 109 is installed between the pin pulling rod 102 and the synchronization rod 110 . The above installation order can be changed, omitted, added, etc. After the installation is complete, press the rack 117 downward as required, the return spring 122 is compressed, and the meshing between the rack 117 and the gear 116 is disengaged, and the two racks 117 are pressed against the socket 105 and released, and the gear 116 and the rack 117 is engaged and functioning properly.

As a preferred solution of this embodiment, one end of the rack 117 of the second adjusting member 112 is provided with a stopper 126, and the stopper 126 is located in the receiving groove 108, and a limiting compression spring 127 is arranged between the stopper 126 and the main body 118, The limiting compression spring 127 is sleeved on the outer side of the rack 117 .

The stopper 126 is against the socket 105, and the limit compression spring 127 can counteract a part of the active force when the pin puller 102 rotates in reverse, and the position control of the rack 117 is more precise.

As a preferred solution of this embodiment, the notch 123 is a square through hole, and the vertical height of the square through hole is greater than the thickness of the rack 117 .

The thickness of the direction through hole can ensure that the rack 117 can move downwards, so that the rack 117 can be disengaged from the gear 116 for adjustment.

As a preferred solution of this embodiment, a pressing plate 128 is arranged in the cavity 120 corresponding to the second adjusting member 112, and the pressing plate 128 is arranged at the bottom of the return spring 122, and the bottom of the cavity 120 is provided with a tightening bolt 129, and the tightening bolt 129 runs through the bottom of the cavity 120 and abuts against the pressing plate 128 .

When the pin puller 102 is reversely adjusted, because the rack 117 of the second adjustment member 112 moves under the action of an external force, the gear 116 rotates and the distance between the two racks 117 increases, which affects the normal operation of the pin puller. use. The tightening bolt 129 is threadedly connected with the bottom of the cavity 120, and the length of the tightening bolt 129 extending into the cavity 120 can be adjusted by screwing the tightening bolt 129, so that the tightening bolt 129 withstands the pressing plate 128, and the pressing plate 128 squeezes Press the return spring 122, the upward force on the top plate 121 becomes larger, and it is not easy to fall down. The pressure exerted by the top plate 121 on the rack 117 increases, and the friction force increases accordingly, which can avoid the friction caused by the reverse adjustment of the pin plate. The abnormal movement of the rack 117 effectively ensures the normal use of the second regulating member 112 .

As a preferred solution of this embodiment, the assembly 119 is in the shape of a plate, and the assembly 119 and the main body 118 are connected by threaded fasteners.

The connection method of threaded fasteners is relatively simple and reliable.

As a preferred solution of this embodiment, the first crossbar 106 is provided with a handle cover 130, and the handle cover 130 is made of rubber material.

The handle glove 130 makes the staff feel more comfortable. In addition, the handle glove 130 can also be made of insulating material to improve safety performance.

As a preferred solution of this embodiment, the first ratchet 113 is correspondingly provided with a spring or torsion spring for making the first ratchet 113 against the ratchet 115, and the second ratchet 114 is correspondingly provided with a spring or torsion spring for making the second ratchet 114 against The spring or torsion spring of ratchet 115.

The spring or torsion spring can ensure that the first ratchet 113 and the second ratchet 114 are always against the ratchet 115 to prevent the gear 116 from rotating abnormally.

It should be noted that, in the case of no conflict, the features in the embodiments of the present invention can be combined with each other.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a pin removal, it is characterised in that include fixture, pull pin part and keeper, described in part of pulling pin include at least two The bar of pulling pin being arranged side by side, described in bar of pulling pin be square pole, described in the pull pin outside of bar be coated with insulating barrier, described in bar of pulling pin turn Moving and be arranged at described fixture, the length direction of described keeper is vertical with the length direction of described bar of pulling pin.

Pin removal the most according to claim 1, it is characterised in that described in bar of pulling pin insert in locking pin, described keeper For at least two, described keeper can be closer or far from described socket and prop up the socket for plugging described locking pin.

Pin removal the most according to claim 2, it is characterised in that between described keeper and described fixture, screw thread is even Connect.

Pin removal the most according to claim 2, it is characterised in that be provided with in described fixture two corresponding reversely with Step structure, described in bar of pulling pin be two, the top of bar of pulling pin described in two connects fixing " U "-shaped by the first cross bar, described The pull pin bottom of bar is provided with " U " the type part setting described locking pin for card, and described fixture is provided with for accommodating described lock The holding tank of tight pin；

Each described reverse sync structure includes parallel four-bar linkage, the first regulating part and the second regulating part, and described first adjusts Joint part and described second regulating part lay respectively at the both sides of described holding tank, described parallel-ordinal shift structure by described bar of pulling pin, Second cross bar and synchronizing bar composition, described synchronizing bar is two, described second cross bar and described bar of pulling pin hinged and described second Cross bar is hinged with described synchronizing bar, and described synchronizing bar be arranged in parallel with described bar of pulling pin, and the bottom of described synchronizing bar rotates and arranges In described fixture；

Described first regulating part and described second regulating part include the first ratchet, the second ratchet, ratchet, gear and tooth bar respectively, First ratchet of described first regulating part rotate be arranged at described in pull pin bar and prop up described ratchet, the of described second regulating part One ratchet rotates and is arranged at described synchronizing bar and props up described ratchet, and described ratchet overlaps and Tong Bu with the wheel axis of described gear Motion, described gear engages with described tooth bar, and described tooth bar is slideably positioned in described fixture, and institute is stretched in one end of described tooth bar Stating in holding tank, one of them described tooth bar is fixing with described keeper to be connected or one-body molded, and described second ratchet props up institute State ratchet or described tooth bar and for preventing described tooth bar from moving when pulling pin state；

Described bar of pulling pin is in when pulling pin state, and the tooth bar of described first regulating part props up described socket and described second regulating part Position keep constant, described in bar of pulling pin when being in reverse adjustment state, the tooth bar of described second regulating part props up described socket, The tooth bar length of described first regulating part in described holding tank increases and the tooth bar length of described second regulating part reduces.

Pin removal the most according to claim 4, it is characterised in that described fixture includes main component and molectron, described Removably connecting between molectron and described main component, described molectron is four and corresponding with the position of described gear respectively；

Being provided with cavity between described molectron and described main component, sliding in described cavity is embedded with top board, described top board with Being provided with back-moving spring between the diapire of described cavity, relative two sidewall of described cavity is provided with breach, described tooth Bar is arranged in described breach, and described back-moving spring promotes described top board to make described tooth bar engage with described gear；

The sidewall of described molectron is provided with through hole, is synchronized with the movement by the first rotating shaft between described ratchet and described gear, institute State the first rotating shaft and be arranged in described through hole, described in pull pin bar and described synchronizing bar be arranged at described respectively by the second axis of rotation Fixture, the axial line of described second rotating shaft overlaps with the axial line of described first rotating shaft, and described second rotating shaft is arranged in described First rotating shaft, one end of described second rotating shaft is rigidly connected with described main component, and described ratchet is positioned at outside described cavity, described tooth Wheel is positioned at described cavity, and described second ratchet is arranged at the outer wall of described molectron.

Pin removal the most according to claim 5, it is characterised in that one end of the tooth bar of described second regulating part is provided with gear Block, described block is positioned at described holding tank, is provided with spacing compression spring, described spacing pressure between described block and described main component Spring is sheathed on outside described tooth bar.

Pin removal the most according to claim 5, it is characterised in that described breach is square through hole, described square through hole Vertical height is more than the thickness of described tooth bar.

8. according to the pin removal described in claim 5-7 any one, it is characterised in that the institute corresponding with described second regulating part Being provided with pressing plate in stating cavity, described pressing plate is arranged at the bottom of described back-moving spring, and the bottom of described cavity is provided with and holds out against Bolt, described puller bolt runs through the bottom of described cavity and props up described pressing plate.

9. according to the pin removal described in claim 4-7 any one, it is characterised in that described first cross bar is provided with handle Set, described handle sleeve uses elastomeric material to make.

10. according to the pin removal described in claim 4-7 any one, it is characterised in that described first ratchet is correspondingly arranged on For making described first ratchet prop up spring or the torsion spring of described ratchet, described second ratchet is correspondingly arranged on for making described Two ratchets prop up spring or the torsion spring of described ratchet.