Pin puller

Abstract

The invention relates to a pin puller which comprises a guide rod. The pin pulling head comprises a connecting part and a hook part, the connecting part is connected with the end of the guide rod, the hook part is connected with and protrudes out of the side wall of the connecting part, and the hook part is arranged to be matched with the pin to pull out the pin when external force is applied to the hook part through the guide rod and the connecting part; the first limiting part is connected with and protrudes out of the side wall of the guide rod; the guide rod is sleeved with the sliding block, the sliding block is located on the side, away from the pin pulling head, of the first limiting part, and the sliding block is arranged to move in the extending direction of the guide rod under the action of external force and impact the first limiting part, so that force is applied to the guide rod and the connecting part through the first limiting part, and then force is applied to the pin through the connecting part so that the pin can be inserted. The pin puller can meet the requirement for a small operation space, the dismounting and mounting efficiency of the insulator pin can be improved, and the problems of insulator spontaneous explosion and high-altitude object falling risks caused by the fact that the pin puller touches the insulator by mistake can be effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of tools for replacing insulator pins, and in particular to a pin puller. Background Art

[0002] In the replacement of transmission line insulators, a pin puller is often used to pull out or insert insulator pins to remove and install the insulator. Specifically, after the pin is pulled out by the pin puller, the operator can manually replace the insulator, and then insert the pin with the assistance of the pin puller to complete the installation and fixation of the insulator.

[0003] In the related art, during the pin insertion process, an operator is generally required to hold a pin puller and swing the pin puller to use the weight of the pin puller to knock the top of the pin to insert the pin and achieve the installation and resetting of the pin.

[0004] However, for some types of insulators, such as anti-pollution insulators, the inner umbrella skirt of the insulator protrudes and blocks the pins, so the operating space for the pin puller to strike the pins is limited, affecting the efficiency of disassembly and assembly of the insulator pins. In addition, there is a risk of accidental contact leading to insulator self-explosion and falling objects from high altitude during the replacement of the insulator. Summary of the invention

[0005] Based on this, it is necessary to provide a pin puller to address the problems of low efficiency in disassembly and assembly of insulator pins, and the risk of insulator self-explosion and falling objects due to accidental contact.

[0006] A pin puller comprises: a guide rod; a pin pulling head, the pin pulling head comprising a connecting portion and a hook portion, the connecting portion being connected to the end of the guide rod, the hook portion being connected to and protruding from the side wall of the connecting portion, the hook portion being configured to cooperate with a pin to pull out the pin when an external force is applied to the hook portion through the guide rod and the connecting portion; a first limiting portion being connected to and protruding from the side wall of the guide rod; and a sliding block being sleeved outside the guide rod and located on a side of the first limiting portion away from the pin pulling head, the sliding block being configured to be able to move along the extension direction of the guide rod and hit the first limiting portion under the action of an external force, so as to achieve the application of force to the guide rod and the connecting portion through the first limiting portion, and then to apply force to the pin through the connecting portion to insert the pin.

[0007] In one of the embodiments, a positioning groove is provided on the end surface of the connecting portion away from the guide rod, and the positioning groove is used to cooperate with the pin so as to apply force to the pin through the connecting portion.

[0008] In one of the embodiments, a first connecting groove is provided on the end surface of the connecting portion close to the guide rod; one end of the guide rod close to the connecting portion extends into the first connecting groove and is connected to the connecting portion through at least one first pin shaft.

[0009] In one embodiment, the connecting portion and the guide rod extend along the same straight line; and / or one end of the hook portion is connected to the connecting portion, and the other end of the hook portion protrudes from the outer wall of the connecting portion and is bent toward the first limiting portion; and / or the hook portion is gradually reduced in distance from the connecting portion from near to far; and / or the guide rod and / or the slider are made of titanium alloy material.

[0010] In one embodiment, the pin puller further includes a second limiting portion, which is connected to and protrudes from a side wall of the guide rod, and is located on a side of the slider away from the first limiting portion, so as to limit the slider.

[0011] In one embodiment, the pin puller further includes a nut clamp, one end of which is connected to an end of the guide rod away from the pin pulling head, and the other end of the nut clamp is provided with a nut hole, which is used to cooperate with a bolt to disassemble and assemble the bolt.

[0012] In one of the embodiments, the nut clamp protrudes from the side wall of the guide rod in the radial direction of the guide rod to limit the sliding block.

[0013] In one of the embodiments, a second connecting groove is provided on the end surface of the nut clamp close to the guide rod; one end of the guide rod close to the nut clamp extends into the second connecting groove and is connected to the nut clamp through at least one second pin shaft.

[0014] In one of the embodiments, the second pin shaft protrudes from the side wall of the guide rod in the radial direction of the guide rod to limit the sliding block.

[0015] In one embodiment, the pin puller further comprises a rope ring, wherein the rope ring is connected to the slider and the rope ring is formed with a rope threading hole.

[0016] The pin puller provided in the embodiment of the present application includes a guide rod, a pin puller head, a first limiter and a slider, the pin puller head is arranged at one end of the guide rod, the pin puller head includes a connection part connected to the guide rod and a hook part connected to the connection part, the first limiter protrudes from the side wall of the guide rod, and the slider is sleeved outside the guide rod and is located on the side of the first limiter away from the pin puller head. In the process of replacing the transmission line insulator using the above pin puller, when it is necessary to pull out the insulator pin, the hook part is engaged with the top of the pin, and then the operator bends the guide rod, and uses the lever principle to apply force to the connection part and the hook part, so that the pin can be pried to realize the function of pulling out the pin. When it is necessary to insert the insulator pin, the connection part is against the top of the pin, and then the operator moves the slider so that the slider slides along the guide rod, and the slider hits the first limiter, at this time, the first limiter can sequentially transmit the impact force from the slider to the guide rod and the connection part, and finally apply force to the pin through the connection part, so that the pin can be inserted into the corresponding part of the insulator to realize the function of installing the pin. Therefore, the pin puller of the embodiment of the present application can not only effectively pull out the pins, but also when inserting the pins, it is only necessary to align the connecting part of the pin puller with the top of the pin, and then move the slider to make it hit the first limit part, without swinging the entire pin puller to hit the pin. It can be seen that the above-mentioned pin puller can adapt to the needs of a smaller operating space, which is beneficial to improving the efficiency of disassembly and assembly of insulator pins, and can effectively avoid the problem of the pin puller accidentally touching the insulator, resulting in the risk of insulator self-explosion and falling objects from high altitude. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a schematic diagram of the overall structure of a pin puller provided in an embodiment of the present application.

[0018] FIG. 2 is a schematic diagram of the connection structure of the guide rod, the first limiting portion and the sliding block provided in an embodiment of the present application.

[0019] Figure 3 This is a schematic diagram of the front structural view of the pin pulling head provided in an embodiment of the present application.

[0020] Figure 4 A schematic side structural diagram of a pin pulling head provided in an embodiment of the present application.

[0021] Figure 5 This is a schematic diagram of the front view structure of the nut clamp provided in an embodiment of the present application.

[0022] Figure 6 A schematic diagram of the top view of the nut clamp provided in an embodiment of the present application.

[0023] Figure 7 This is a schematic diagram of the overall structure of a pin puller provided in another embodiment of the present application.

[0024] Figure Number:

[0025] 10. Pin puller;

[0026] 100, guide rod; 110, main body section; 120, first connecting section; 121, first connecting hole; 130, second connecting section; 131, second connecting hole;

[0027] 200, pin pulling head; 210, connecting portion; 211, positioning groove; 212, first connecting groove; 213, third connecting hole; 220, hook portion;

[0028] 300, a first limiting portion;

[0029] 400, slider; 410, mounting hole;

[0030] 500, second limiting portion;

[0031] 600, nut clamp; 610, nut hole; 620, second connecting groove; 630, fourth connecting hole;

[0032] 700, rope ring; 710, rope threading hole;

[0033] 800, first pin;

[0034] 900. Second pin shaft. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0036] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does 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 therefore cannot be understood as a limitation on the present application.

[0037] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0039] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0041] Pin pullers are commonly used auxiliary tools in the replacement of transmission line tension monolithic insulators, mainly used to pull out or insert insulator pins. For some types of insulators such as anti-pollution insulators, the inner shed skirt of the insulator is more prominent, which will block the pins, resulting in limited operating space for pulling out or inserting the pins, low operating efficiency, and even the inability to knock the inserted pins through the pin puller to achieve the installation and reset function of the pins.

[0042] In order to solve at least part of the above technical problems, an embodiment of the present application provides a pin puller, which has the functions of pulling out and installing and resetting insulator pins, and can be applied to the pin pulling and insertion operations of various types of insulators including anti-pollution insulators.

[0043] Fig. 1 is a schematic diagram showing the overall structure of the pin puller provided in an embodiment of the present application. Fig. 2 is a schematic diagram showing the connection structure of the guide rod, the first limiting part and the sliding block provided in an embodiment of the present application. Figure 3 A front view structural schematic diagram of a pin pulling head provided in an embodiment of the present application is shown. Figure 4 A side structural schematic diagram of a pin pulling head provided in an embodiment of the present application is shown. Figure 5 The front view of the nut clamp provided in the embodiment of the present application is shown. Figure 6 As shown, a pin puller 10 provided in one embodiment of the present application includes a guide rod 100 , a pin pulling head 200 , a first limiting portion 300 and a sliding block 400 .

[0044] The guide rod 100 is the main structure of the pin puller 10, which is used to bear the main mechanical load and guide the movement of the slider 400. For example, the guide rod 100 is a cylindrical structure, and the extension direction of the guide rod 100 is the centerline direction of the guide rod 100, that is, the axial direction of the guide rod 100. It should be noted that the radial direction of the guide rod 100 herein is the direction perpendicular to the axial direction of the guide rod 100.

[0045] It should be understood that the shape of the guide rod 100 is not limited to a cylindrical structure. For example, in other optional embodiments, the guide rod 100 can also be set to a triangular prism structure, a rectangular structure, or the like, as long as it can be socketed with the slider 400 and allow the slider 400 to move along the guide rod 100.

[0046] The pin pulling head 200 includes a connecting portion 210 and a hook portion 220. The connecting portion 210 is connected to the end of the guide rod 100. The hook portion 220 is connected to and protrudes from the side wall of the connecting portion 210. The hook portion 220 is configured to cooperate with the pin to pull out the pin when an external force is applied to the hook portion 220 through the guide rod 100 and the connecting portion 210. Specifically, since the hook portion 220 protrudes outward from the side wall of the connecting portion 210, an angle is formed between the hook portion 220, the connecting portion 210 and the guide rod 100. When the insulator pin needs to be pulled out, the top of the pin is connected through the hook portion 220, and then the operator bends the guide rod 100. At this time, the guide rod 100 can apply force to the pin through the connecting portion 210 and the hook portion 220 to pry the pin, thereby realizing the function of pulling out the pin using the lever principle.

[0047] The first limiting portion 300 is connected to and protrudes from the side wall of the guide rod 100. Specifically, the first limiting portion 300 extends outward from the outer surface of the guide rod 100, and is used to block the movement of the slider 400 and transmit the impact force from the slider 400 to the guide rod 100. Exemplarily, the first limiting portion 300 can be set in a cylindrical structure, the first limiting portion 300 is penetrated in the guide rod 100, and both ends of the first limiting portion 300 protrude from the side wall of the guide rod 100, so that both ends of the first limiting portion 300 can block the slider 400. At this time, the first limiting portion 300 is subjected to the impact force of the slider 400 more evenly, which is conducive to reducing the force transmission loss and more conducive to the efficient installation of the pin.

[0048] It should be understood that the first position-limiting portion 300 may also be configured in other structural forms. For example, the first position-limiting portion 300 may be configured such that only one end of the first position-limiting portion 300 protrudes from the side wall of the guide rod 100, while the other end is hidden inside the guide rod 100; or the first position-limiting portion 300 may be configured as a protruding structure connected to the outer surface of the guide rod 100, in which case the first position-limiting portion 300 can also effectively block and limit the slider 400.

[0049] The slider 400 is sleeved outside the guide rod 100 and is located on the side of the first limiting portion 300 away from the pin pulling head 200. The slider 400 is configured to move along the extension direction of the guide rod 100 and hit the first limiting portion 300 under the action of external force, so as to apply force to the guide rod 100 and the connecting portion 210 through the first limiting portion 300, and then apply force to the pin through the connecting portion 210 to insert the pin. Specifically, a through hole is provided inside the slider 400, and the slider 400 is sleeved outside the guide rod 100 through the through hole, so that the slider 400 can reciprocate along the guide rod 100 under the action of external force and hit the first limiting portion 300. In addition, the inner diameter of the through hole is slightly larger than the outer diameter of the guide rod 100, so that the slider 400 can be prevented from shaking in the radial direction of the guide rod 100 when sliding along the guide rod 100, thereby dispersing the impact force of the slider 400 on the first limiting portion 300, thereby avoiding the loss of impact force. When it is necessary to insert the insulator pin, the connecting portion 210 is pressed against the top of the pin, and then the operator moves the slider 400 so that the slider 400 moves away from the first limiting portion 300, and then releases the slider 400 so that it slides along the guide rod 100 under its own weight and hits the first limiting portion 300, or the operator manually pushes the slider 400 to hit the first limiting portion 300. At this time, the first limiting portion 300 can transfer the impact force from the slider 400 to the guide rod 100 and the connecting portion 210 in sequence, and finally apply force to the pin through the connecting portion 210, so as to insert the pin into the corresponding position of the insulator to realize the installation and reset function of the pin.

[0050] Through the above structural design, the pin puller 10 of the embodiment of the present application can not only effectively pull out the pin by utilizing the cooperation of the hook portion 220 with the connecting portion 210 and the guide rod 100, but also only needs to align the connecting portion 210 of the pin puller 10 with the top of the pin when inserting the pin, and then move the slider 400 so that the slider 400 hits the first limit portion 300. During the operation, there is no need to swing the entire pin puller 10 to knock the pin, which can meet the needs of a smaller operating space. Therefore, the pin puller 10 of the embodiment of the present application has the functions of pulling out and inserting the insulator pins at the same time, and can solve the problem of small operating space and inconvenient knocking of the traditional pin puller 10 during the installation and reset process of the anti-fouling insulator pins, which is conducive to improving the removal and installation efficiency of the insulator pins, and reducing the risk of self-explosion of the insulator and falling objects from high altitude caused by accidental contact when replacing the insulator.

[0051] Combined with Figure 1, Figure 3 to Figure 4 As shown, a schematic diagram of the structure of the pin pulling head 200 in an embodiment of the present application is shown. In some embodiments, the end surface of the connecting portion 210 away from the guide rod 100 is provided with a positioning groove 211, and the positioning groove 211 is used to cooperate with the pin so as to apply force to the pin through the connecting portion 210. Specifically, when the pin needs to be inserted, the positioning groove 211 on the connecting portion 210 is abutted against the top of the pin, so that the connecting portion 210 and the pin are more easily aligned, and it is convenient to provide a precise impact force to the top of the pin through the connecting portion 210, so that the pin is accurately reset, thereby solving the problems of the insulator pin having a tricky installation angle and a small operating space.

[0052] Exemplarily, when the top of the pin is hemispherical, the positioning groove 211 can be a hemispherical concave structure recessed in the end surface of the connecting portion 210 to facilitate cooperation with the top of the pin and prevent the pin from deviating when impacted by the connecting portion 210.

[0053] In some embodiments, the end surface of the connecting portion 210 close to the guide rod 100 is provided with a first connecting groove 212; one end of the guide rod 100 close to the connecting portion 210 extends into the first connecting groove 212 and is connected to the connecting portion 210 through at least one first pin 800. Exemplarily, the number of the first pins 800 can be one, two, three or more. The guide rod 100 is connected to the connecting portion 210 through the first pin 800, so that the connecting portion 210 and the guide rod 100 can be manufactured and formed separately, so that it is convenient to process the hook portion 220 connected to the connecting portion 210 separately, with higher manufacturing efficiency and lower cost.

[0054] See Figures 2 to Figure 4As shown, in some embodiments, the guide rod 100 includes a main body section 110 and a first connecting section 120 connected in sequence, a first stopper 300 is provided on the main body section 110, and a slider 400 is sleeved outside the main body section 110. The size of the first connecting section 120 is smaller than that of the main body section 110, and is used to cooperate with the first connecting groove 212 of the connecting portion 210. The first connecting section 120 is provided with a first connecting hole 121, and the connecting portion 210 is provided with a third connecting hole 213. When the first connecting section 120 extends into the first connecting groove 212 until the first connecting hole 121 and the third connecting hole 213 are aligned, the first pin 800 is passed through the third connecting hole 213 and the first connecting hole 121 to achieve the connection and fixation of the guide rod 100 and the connecting portion 210. This connection method can ensure that the guide rod 100 and the connecting portion 210 are firmly connected. Exemplarily, the first pin 800 can be a rivet pin.

[0055] In some embodiments, the connecting portion 210 and the guide rod 100 are extended along the same straight line. Referring to FIG. 1 , the connecting portion 210 and the guide rod 100 are configured as coaxial cylindrical structures, and the two have the same outer diameter and extend in the same direction, so that the impact force from the slider 400 is easily transmitted to the connecting portion 210 via the first limit portion 300 and the guide rod 100, and finally the force is accurately transmitted to the pin via the connecting portion 210, so that the pin is efficiently inserted.

[0056] In some embodiments, one end of the hook portion 220 is connected to the connecting portion 210, and the other end of the hook portion 220 protrudes from the outer wall of the connecting portion 210 and is bent toward the first limiting portion 300. Figure 3 As shown, the hook portion 220 is bent toward the first limiting portion 300. On the one hand, it is convenient for the hook portion 220 to extend into the vicinity of the top of the insulator pin and connect with the top of the pin. On the other hand, when the operator bends the guide rod 100, the end of the hook portion 220 away from the connecting portion 210 is more likely to pry up the pin, that is, the guide rod 100 only needs to move a small amplitude to drive the hook portion 220 to move and thereby pry up the pin, which is beneficial to saving operating space and improving the efficiency of pulling out the pin.

[0057] In some embodiments, the hook portion 220 is gradually reduced from the near end to the far end of the connecting portion 210. The gradually reduced setting means that the cross-sectional area of ​​the hook portion 220 gradually decreases from the near end to the far end of the connecting portion 210, so that the end of the hook portion 220 away from the connecting portion 210 is in a hook-shaped structure with a smaller size, so that it is convenient to extend the end of the hook portion 220 away from the connecting portion 210 into a narrow space, for example, into the inner shed of the anti-pollution insulator to engage with the top of the pin, which is conducive to prying the pin and pulling it out.

[0058] In some embodiments, the guide rod 100 and / or the slider 400 are made of titanium alloy material, which is beneficial to strengthen the structural strength of the pin puller 10, improve the anti-corrosion performance, prevent the pin puller 10 from rusting, and reduce the weight of the pin puller 10, thereby reducing the load of high-altitude operations.

[0059] Exemplarily, in some embodiments, the guide rod 100 can be made of a TC4 titanium alloy material with a diameter of 10-20 mm and is used to bear the main mechanical load; the slider 400 is made of a TC4 titanium alloy material with an outer diameter of 30-50 mm, an internal through hole diameter of 10-20 mm, a length of 60-100 mm, and is a concentric cylinder with the guide rod 100. The slider 400 can reciprocate along the guide rod 100 to provide the impact force required for the pin installation reset.

[0060] In some embodiments, the pin puller 10 further includes a second limiting portion 500, which is connected to and protrudes from the side wall of the guide rod 100, and is located on the side of the slider 400 away from the first limiting portion 300, so as to limit the slider 400. Specifically, the second limiting portion 500 extends outward from the outer surface of the guide rod 100, and when the slider 400 moves along the guide rod 100, the first limiting portion 300 limits one end of the slider 400 and transmits the impact force from the slider 400, and the second limiting portion 500 is used to block and limit the other end of the slider 400, so as to prevent the slider 400 from escaping from the end of the guide rod 100 away from the pin pulling head 200 when the slider 400 moves along the guide rod 100.

[0061] Exemplarily, referring to FIG. 1 , the second limiting portion 500 can be configured as a cylindrical structure, a corresponding opening is provided in the guide rod 100, the second limiting portion 500 is passed through the opening and is arranged in the guide rod 100, and both ends of the second limiting portion 500 protrude from the side wall of the guide rod 100, so that both ends of the second limiting portion 500 can form a blockage for the slider 400.

[0062] It should be understood that the second position-limiting portion 500 may also be configured in other structural forms. For example, the second position-limiting portion 500 may be configured in a structural form in which only one end protrudes from the side wall of the guide rod 100, and the other end is hidden inside the guide rod 100; or the second position-limiting portion 500 may be configured in a convex structural form connected to the outer surface of the guide rod 100, in which case the second position-limiting portion 500 can also effectively block and limit the slider 400.

[0063] In some embodiments, the pin puller 10 further includes a nut clamp 600, one end of which is connected to the end of the guide rod 100 away from the pin puller 200, and the other end of the nut clamp 600 is provided with a nut hole 610, which is used to cooperate with the bolt to disassemble and assemble the bolt. Specifically, the nut hole 610 is set to a shape that matches the nut of the bolt, and the nut clamp 600 is used to be sleeved on the nut of the bolt through the nut hole 610 and tighten the bolt by twisting the nut. See FIG. 1, Figure 5 and Figure 6 As shown, the nut hole 610 is exemplarily set as a plum blossom-shaped hole. It should be understood that in other optional embodiments, the nut clamp 600 can be customized in different models according to the bolt models involved in the operation process, and the corresponding nut hole 610 can also be set in different shapes to improve applicability.

[0064] Combination Figure 7 FIG. 1 is a schematic diagram showing the overall structure of a pin puller 10 in another embodiment of the present invention. Figure 7 As shown, in some embodiments, the nut clamp 600 protrudes from the side wall of the guide rod 100 in the radial direction of the guide rod 100 to limit the slider 400. Therefore, the slider 400 can be prevented from coming out from the end of the guide rod 100 away from the first limiting portion 300 by blocking and limiting the movement of the slider 400 by the nut clamp 600. In addition, since there is no need to set a separate limiting component between the slider 400 and the nut clamp 600, the movement stroke of the slider 400 along the guide rod 100 is longer, and the slider 400 can move toward the first limiting portion 300 at a position farther from the first limiting portion 300 and hit the first limiting portion 300, which is conducive to increasing the impact force of the slider 400 on the first limiting portion 300, thereby facilitating the transmission of a greater impact force to the pin through the guide rod 100 and the connecting portion 210, so that the pin is inserted into the corresponding part of the insulator more quickly, thereby improving the installation efficiency of the pin.

[0065] In some embodiments, the end surface of the nut clamp 600 close to the guide rod 100 is provided with a second connection groove 620; one end of the guide rod 100 close to the nut clamp 600 extends into the second connection groove 620 and is connected to the nut clamp 600 through at least one second pin 900. Exemplarily, the number of the second pins 900 can be one, two, three or more. The guide rod 100 is connected to the nut clamp 600 through the second pin 900, so that the nut clamp 600 and the guide rod 100 can be manufactured and formed separately, which is convenient for separate processing of the nut clamp 600 and the guide rod 100, with higher manufacturing efficiency and lower cost.

[0066] See Figures 1 to Figure 7As shown, in some embodiments, the guide rod 100 includes a second connecting section 130 and a main section 110 connected in sequence, a first limiting portion 300 is provided on the main section 110, and a slider 400 is sleeved outside the main section 110. The size of the second connecting section 130 is smaller than that of the main section 110, and the second connecting section 130 is used to cooperate with the second connecting groove 620 of the nut clamp 600. The second connecting section 130 is provided with a second connecting hole 131, and the nut clamp 600 is provided with a fourth connecting hole 630. When the second connecting section 130 extends into the second connecting groove 620 until the second connecting hole 131 and the fourth connecting hole 630 are aligned, the second pin 900 is passed through the fourth connecting hole 630 and the second connecting hole 131 to achieve the connection and fixation of the guide rod 100 and the nut clamp 600. This connection method can ensure that the guide rod 100 and the nut clamp 600 are firmly connected. Exemplarily, the second pin 900 can be a rivet pin.

[0067] In some embodiments, the second pin 900 protrudes from the side wall of the guide rod 100 in the radial direction of the guide rod 100 to limit the slider 400. Referring to FIG. 1 , the second pin 900 extends outward from the outer surface of the guide rod 100. When the slider 400 moves along the guide rod 100, the first limiting portion 300 limits one end of the slider 400 and transmits the impact force from the slider 400. The second pin 900 is used to block and limit the other end of the slider 400 to prevent the slider 400 from being disengaged from the end of the guide rod 100 away from the pin puller 200 when the slider 400 moves along the guide rod 100. In this embodiment, the second pin 900 can be used to realize the function of connecting the guide rod 100 and the nut clamp 600, and the second pin 900 can also be used to cooperate with the first limiting portion 300 to limit the slider 400. There is no need to set a separate limiting component between the nut clamp 600 and the slider 400, and the structure is simple.

[0068] It can be understood that the second pin shaft 900 can be of the same structural form as the second limiting portion 500 in the aforementioned embodiment.

[0069] In some embodiments, the pin puller 10 further includes a rope ring 700, which is connected to the slider 400 and is formed with a rope threading hole 710. Since the pin puller 10 is generally used to pull out and insert insulator pins during aerial work, in this embodiment, a hand rope can be worn through the rope threading hole 710 to avoid the risk of the pin puller 10 dropping objects during aerial work.

[0070] Exemplarily, referring to FIG. 1 and FIG. 2 , the rope ring 700 has an annular structure and a connecting column protruding from the annular structure, the annular structure is surrounded by a circular rope threading hole 710, and the outer surface of the connecting column is provided with an external thread. Correspondingly, the surface of the slider 400 is provided with a mounting hole 410, and the inner wall of the mounting hole 410 is provided with an internal thread that cooperates with the connecting column, so that the rope ring 700 and the slider 400 can be threadedly connected through the connecting column and the mounting hole 410, so as to facilitate disassembly and installation. In addition, the rope threading hole 710 can be used to install and connect a hand rope. Specifically, one end of the hand rope is connected to the rope threading hole 710, and the other end is connected to the operator's limbs, operating clothes or operating equipment in the operating scene, such as a power transmission line, so as to avoid the risk of falling objects from high altitude caused by the pin puller 10 slipping out of the hand during use.

[0071] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A pin puller, characterized in that: include: Guide rod; A pin pulling head, the pin pulling head comprising a connecting portion and a hook portion, the connecting portion being connected to the end of the guide rod, the hook portion being connected to and protruding from a side wall of the connecting portion, the hook portion being configured to cooperate with a pin to pull out the pin when an external force is applied to the hook portion through the guide rod and the connecting portion; A first limiting portion connected to and protruding from a side wall of the guide rod; and A slider is sleeved outside the guide rod and is located on a side of the first limiting portion away from the pin pulling head. The slider is configured to move along the extension direction of the guide rod and hit the first limiting portion under the action of an external force, so as to apply force to the guide rod and the connecting portion through the first limiting portion, and then apply force to the pin through the connecting portion to insert the pin.

2. The pin puller according to claim 1, characterized in that: The end surface of the connecting portion away from the guide rod is provided with a positioning groove, and the positioning groove is used to cooperate with the pin so as to apply force to the pin through the connecting portion.

3. The pin puller according to claim 1, characterized in that: The end surface of the connecting portion close to the guide rod is provided with a first connecting groove; One end of the guide rod close to the connecting portion extends into the first connecting groove and is connected to the connecting portion through at least one first pin.

4. The pin puller according to claim 1, characterized in that: The connecting portion and the guide rod are arranged to extend along the same straight line; and / or One end of the hook portion is connected to the connecting portion, and the other end of the hook portion protrudes from the outer wall of the connecting portion and is bent toward the first limiting portion; and / or The hook portion is arranged to be gradually reduced in distance from the connecting portion from near to far; and / or The guide rod and / or sliding block are made of titanium alloy material.

5. The pin puller according to any one of claims 1 to 4, characterized in that: The pin puller further includes a second limiting portion, which is connected to and protrudes from the side wall of the guide rod. The second limiting portion is located on a side of the slider away from the first limiting portion, so as to limit the slider.

6. The pin puller according to any one of claims 1 to 4, characterized in that: The pin puller also includes a nut clamp, one end of which is connected to an end of the guide rod away from the pin pulling head, and the other end of the nut clamp is provided with a nut hole, which is used to cooperate with the bolt to disassemble and assemble the bolt.

7. The pin puller according to claim 6, characterized in that: The nut clamp protrudes from the side wall of the guide rod in the radial direction of the guide rod to limit the sliding block.

8. The pin puller according to claim 6, characterized in that: The end surface of the nut clamp close to the guide rod is provided with a second connecting groove; One end of the guide rod close to the nut clamp extends into the second connecting groove and is connected to the nut clamp through at least one second pin.

9. The pin puller according to claim 8, characterized in that: The second pin shaft protrudes from the side wall of the guide rod in the radial direction of the guide rod to limit the sliding block.

10. The pin puller according to claim 1, characterized in that: The pin puller further comprises a rope ring, which is connected to the slider and is provided with a rope threading hole.

Images