A general-purpose integrated arm insulator replacement device

Abstract

The utility model discloses a general integral type wrist arm insulator replacement device, including base pedestal subassembly, screw rod telescopic subassembly and hoop clamping subassembly, the base pedestal subassembly with screw rod telescopic subassembly one end is hinged, the other end of screw rod telescopic subassembly with hoop clamping subassembly is hinged. The utility model's hoop clamping subassembly not only can adapt to the inclination change formed in the wrist arm pipe rotation process, realizes reliable axial connection, and through the displacement and tolerance cooperation of the bolt with hole of hexagonal head screw rod in arc hole, has effectively enhanced the bending stiffness of connecting position, has reduced stress concentration significantly, thereby has comprehensively promoted the safety reliability and operating stability of device. The utility model's base pedestal subassembly has realized the general connection of replacement device and different specifications support. The utility model's hoop clamping subassembly also effectively solves the connection compatibility problem of different models wrist arm.

Description

Technical Field

[0001] This utility model relates to the field of replacement technology for cantilever insulators of electrified railway contact networks, specifically to a universal integrated cantilever insulator replacement device. Background Technology

[0002] Currently, the replacement of insulators on the overhead contact line of electrified railways in China typically involves removing the load suspension of the contact line, using fir poles for support, or adding top poles to the track maintenance vehicle platform to unload the entire contact line before replacing the insulators. The current replacement equipment has the following main drawbacks:

[0003] 1. Regarding the connection structure, the existing replacement device uses a rigid connection or a single hinge connection between the lead screw and the cantilever arm side component, which is difficult to adapt to angle changes during operation. When the cantilever arm rotates around the base of another cantilever arm to form an angle, the rigid connection will cause the device to bear excessive bending moment, resulting in structural deformation; while the single hinge connection allows a certain amount of rotation, it will generate a large lateral bending moment at the axle pin under compressive stress, forming stress concentration, which may lead to component deformation or even fracture, endangering operational safety.

[0004] 2. The main problem with existing cantilever replacement devices lies in the diverse types of overhead contact line supports, including H-shaped steel columns, circular steel columns, horizontal web supports, and lattice steel columns, among others. This makes it difficult to standardize the fixing methods between the existing replacement devices and the supports, requiring various types of specialized connecting components. During on-site operations, operators must replace the corresponding components according to the type of support, which not only increases the burden of carrying materials and labor costs for outdoor operations but also seriously affects replacement efficiency, making it difficult to achieve device universality.

[0005] 3. Regarding the versatility of the connecting components on the cantilever arm side, the existing replacement device's connecting mechanism is not compatible with cantilever arm structures of different specifications. It is difficult to use the same set of clamping components to achieve reliable connection with both 60mm diameter steel pipe cantilever arms and 70mm diameter aluminum alloy cantilever arms at the same time. This results in the need to frequently replace special components when facing replacement tasks for insulators of different models of cantilever arms, which reduces work efficiency. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the present invention aims to provide a universal integrated cantilever insulator replacement device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A universal integrated cantilever insulator replacement device includes a base assembly, a screw telescopic assembly, and a clamping assembly; one end of the base assembly and the screw telescopic assembly are connected, and the other end of the screw telescopic assembly is connected to the clamping assembly.

[0009] The clamping assembly includes a clamping base, a clamping cover plate, a combination pin, a fixing pin, a fastening assembly, a clamping reinforcement cover, and a hexagonal head bolt with holes. The clamping cover plate is located at one end of the clamping base, and one side of the clamping base and the clamping cover plate are hinged by the combination pin. The other side of the clamping base and the clamping cover plate are detachably connected by the fastening assembly. The clamping reinforcement cover is installed at the other end of the clamping base. The opposite sides of the clamping base and the clamping cover plate are both symmetrical arc surfaces. The two sides of the clamping reinforcement cover... Both sides are provided with pin holes and arc-shaped holes. The pin holes and bolt holes of the lead screw telescopic assembly and the clamp reinforcement cover are respectively provided at the corresponding positions. The fixing pin passes through the pin hole on the lead screw telescopic assembly and the pin holes on both sides of the clamp reinforcement cover. The clamp reinforcement cover can rotate up and down around the fixing pin. The hexagonal head screw with hole bolt passes through the bolt hole on the lead screw telescopic assembly and the arc-shaped holes on both sides of the clamp reinforcement cover. When the clamp reinforcement cover rotates up and down, the two ends of the hexagonal head screw with hole bolt move in the arc-shaped holes on both sides of the clamp reinforcement cover.

[0010] Furthermore, the clamping assembly also includes a bushing, which comprises two symmetrical arc-shaped plates. The two arc-shaped plates are symmetrically and detachably mounted on the arc surfaces of the clamping base and the clamping cover plate by screws.

[0011] Furthermore, the base assembly includes an upper clamp, a lower clamp, a T-shaped fastening assembly, rotating lugs, and a pivot; the upper clamp and the lower clamp are locked together by the T-shaped fastening assembly, forming a clamping mechanism for holding the rotating pin of the wrist arm base; the top of the upper clamp is provided with a pivot mounting seat, the pivot is vertically disposed inside the pivot mounting seat, one end of the rotating lugs is connected to the pivot and can swing back and forth around the pivot; the left-hand lead screw of the lead screw extension assembly is rotatably connected to the other end of the rotating lugs via a connecting pin.

[0012] Furthermore, the lead screw telescopic assembly includes a first sleeve, a second sleeve, a left-hand lead screw nut, a right-hand lead screw nut, a left-hand lead screw, a right-hand lead screw, a ratchet shaft, and a double-ended ratchet; the ratchet shaft is connected to one end of the first sleeve and one end of the second sleeve via internal splines, and the double-ended ratchet is sleeved and installed in the middle of the ratchet shaft; the left-hand lead screw nut is installed at the other end of the first sleeve and cooperates with the left-hand lead screw, and the right-hand lead screw nut is installed at the other end of the second sleeve and cooperates with the right-hand lead screw; the thread directions of the left-hand lead screw and the right-hand lead screw are opposite; the right-hand lead screw has a pin hole and a bolt hole at positions corresponding to the pin hole and the arc hole of the clamp reinforcing cover, respectively.

[0013] Furthermore, the fastening assembly includes a pin, a hinge bolt, and a fastening nut that matches the hinge bolt; the pin is connected through the top and bottom of the other side of the clamp base, one end of the hinge bolt is provided with a socket hole and is sleeved on the pin through the socket hole, the other side of the clamp cover plate is provided with a connection hole corresponding to the hinge bolt, and the other end of the hinge bolt passes through the connection hole and is fastened by a fastening nut.

[0014] Furthermore, the inner cavity formed by the clamp base and clamp cover plate is adapted to the 70mm diameter arm tube, and the inner cavity formed by the two arc plates of the bushing is adapted to the 60mm diameter arm tube.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. This utility model employs a double-hinge connection structure between the lead screw telescopic assembly and the clamping assembly. The clamping reinforcement cover is connected to the pin hole at the other end of the lead screw telescopic assembly via the fixed pin, forming a rotation axis. The clamping reinforcement cover can rotate up and down around the fixed pin. The other end of the lead screw telescopic assembly is connected to the arc-shaped hole on the side of the clamping reinforcement cover via a hexagonal head bolt with a hole, forming a movable connection that can slide along the arc-shaped hole. This not only adapts to the tilt angle changes formed during the rotation of the wrist arm tube, achieving a reliable axial connection, but also effectively enhances the bending stiffness of the connection part and significantly reduces stress concentration through the displacement and tolerance matching of the hexagonal head bolt with a hole in the arc-shaped hole, thereby comprehensively improving the safety, reliability, and operational stability of the device.

[0017] 2. This utility model innovatively utilizes the vertical slewing pin common to the cantilever base structure that is uniformly fixed on various types of supports as the connection point between the cantilever base and the replacement device. The upper and lower clamps are used to achieve a reliable connection between the replacement device and the support. It is not only safe and reliable and easy to operate, but also universal. It can effectively overcome the adaptation problem caused by the difference in support types and realize the universal connection between the replacement device and supports of different specifications.

[0018] 3. In this utility model, the base and cover plate of the clamp are adapted to a diameter of 70mm. With the addition of a replaceable adapter bushing, the clamp clamping assembly can be adapted to a diameter of 60mm steel pipe cantilever arm by simply adding a bushing, thereby effectively solving the connection compatibility problem of different models of cantilever arms. Attached Figure Description

[0019] Figure 1 This is a side view of the general-purpose integrated cantilever insulator replacement device in this embodiment of the utility model;

[0020] Figure 2This is a perspective view of the general-purpose integrated cantilever insulator replacement device in the embodiments of this utility model;

[0021] Figure 3 This is a back view schematic diagram of the general-purpose integrated cantilever insulator replacement device in the embodiments of this utility model;

[0022] Figure 4 This is a detailed structural diagram of the clamping assembly in an embodiment of the present utility model;

[0023] Figure 5 This is a side view of the clamp reinforcement cover in an embodiment of the present utility model. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings. It should be noted that this embodiment is based on the present technical solution and provides detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to this embodiment.

[0025] This embodiment provides a universal integrated cantilever insulator replacement device, such as... Figure 1-5 As shown, it includes a base assembly 1, a lead screw telescopic assembly 2, and a clamping assembly 3; one end of the base assembly 1 and the lead screw telescopic assembly 2 are connected, and the other end of the lead screw telescopic assembly 2 is connected to the clamping assembly 3.

[0026] In this embodiment, the base assembly 1 includes an upper clamp 11, a lower clamp 12, a T-shaped fastening assembly 13, rotating double ears 14, and a rotating shaft 15. The upper clamp 11 and the lower clamp 12 are locked together by the T-shaped fastening assembly 13, forming a clamping mechanism for holding the rotating pin of the wrist arm base. The top of the upper clamp 11 is provided with a rotating shaft mounting seat 16, and the rotating shaft 15 is vertically arranged inside the rotating shaft mounting seat 16. One end of the rotating double ears 14 is connected to the rotating shaft 15 and can swing back and forth around the rotating shaft 15. The left-hand screw 25 of the screw telescopic assembly 2 is rotatably connected to the other end of the rotating double ears 14 through a connecting pin, thereby realizing the up-and-down rotation and back-and-forth swing of the screw telescopic assembly 2 relative to the base assembly 1.

[0027] In this embodiment, the lead screw telescopic assembly 2 includes a first sleeve 21, a second sleeve 22, a left-hand lead screw nut 23, a right-hand lead screw nut 24, a left-hand lead screw 25, a right-hand lead screw 26, a ratchet shaft 27, and a double-ended ratchet 28. The ratchet shaft 27 is connected to one end of the first sleeve 21 and the second sleeve 22 respectively via internal splines. The double-ended ratchet 28 is sleeved and installed on the outside of the ratchet shaft 27. The left-hand lead screw nut 23 is installed on the other end of the first sleeve 21 and cooperates with the left-hand lead screw 25. The right-hand lead screw nut 24 is installed on the other end of the second sleeve 22 and cooperates with the right-hand lead screw 26. The thread directions of the left-hand lead screw 25 and the right-hand lead screw 26 are opposite. When the bidirectional ratchet 28 is driven to rotate, it can further drive the ratchet shaft 27 to rotate synchronously together with sleeve 1 21 and sleeve 22, thereby driving the left-hand screw nut 23 and the right-hand screw nut 24 to rotate respectively, so that the left-hand screw 25 and the right-hand screw 26 can achieve synchronous linear motion in opposite directions.

[0028] In this embodiment, the clamping assembly 3 includes a clamping base 31, a clamping cover plate 32, a combination pin 33, a fixing pin 34, a fastening assembly, a clamping reinforcement cover 36, a hexagonal head screw with holes 37, and a bushing 38. The clamping cover plate 32 is disposed at one end of the clamping base 31. The clamping base 31 and one side of the clamping cover plate 32 are hinged by the combination pin 33, and the other side of the clamping base 31 and the clamping cover plate 32 are detachably connected by the fastening assembly. The clamping reinforcement cover 36 is installed at the other end of the clamping base 31. The opposite sides of the clamping base 31 and the clamping cover plate 32 are both symmetrical arc surfaces. The bushing 38 includes two symmetrical arc plates, which are respectively connected symmetrically by screws. It is detachably installed on the arc surface of the clamp base 31 and the clamp cover plate 32; both sides of the clamp reinforcing cover 36 are provided with pin holes 361 and arc holes 362. The right-hand screw 26 is provided with pin holes and bolt holes at positions corresponding to the pin holes 361 and arc holes 362, respectively. The fixing pin 34 passes through the pin hole on the right-hand screw 26 and the pin holes 361 on both sides of the clamp reinforcing cover 36. The clamp reinforcing cover 36 can rotate up and down around the fixing pin 34; the hexagonal head screw with hole bolt 37 passes through the bolt hole on the right-hand screw 26 and the arc holes 362 on both sides of the clamp reinforcing cover 36. When the clamp reinforcing cover 36 rotates up and down, the two ends of the hexagonal head screw with hole bolt 37 move within the arc holes 362 on both sides of the clamp reinforcing cover 36. This allows for an adjustable angle connection between the clamp clamping assembly 3 and the screw telescopic assembly 2, and the rotation angle is controlled and limited by the arc holes.

[0029] Furthermore, in this embodiment, the fastening assembly includes a pin 35, a hinge bolt 38, and a fastening nut 310 that matches the hinge bolt 39; the pin 35 is connected through the top and bottom of the other side of the clamp base 31, one end of the hinge bolt 39 is provided with a socket hole and is sleeved on the pin 25 through the socket hole, the other side of the clamp cover plate 32 is provided with a connection hole corresponding to the hinge bolt 39, and the other end of the hinge bolt 39 is fastened by the fastening nut 310 after passing through the connection hole.

[0030] It should be noted that in the above-mentioned clamping assembly 3, the inner cavity formed by the clamping base 31 and the clamping cover plate 32 is adapted to a 70mm diameter culvert tube. With the bushing installed, the inner cavity formed by the two arc-shaped plates is adapted to a 60mm diameter culvert tube. Therefore, by installing and removing the bushing on the clamping base 31 and the clamping cover plate 32, the clamping assembly 3 can be adapted to culvert tubes with diameters of 60mm and 70mm.

[0031] The above-mentioned general-purpose integrated cantilever insulator replacement device is used as follows:

[0032] During implementation, firstly, the mounting slots of the upper clamp 11 and lower clamp 12 of the base base assembly 1 are respectively inserted into the upper and lower parts of the slewing pin of the cantilever base. By tightening the T-type fastening assembly 13, the base base assembly 1 is firmly fixed to the slewing pin of the cantilever base. Subsequently, if the cantilever tube is 60mm in diameter, two arc-shaped plates of bushing 38 are installed on the opposite side of the clamp base 31 and clamp cover plate 32. Then, the arc-shaped plates on the clamp base 31 are first made to fit against the cantilever tube, and then the clamp cover plate 32 is flipped so that the other arc-shaped plate on the clamp cover plate 32 also fits against the cantilever tube. If the cantilever tube is 70mm in diameter, the bushing 38 does not need to be installed. Then, the fastening assembly between the other side of the clamp cover plate 32 and the other side of the clamp base 31 is pre-tightened (the hinge bolt 39 is passed through the connecting hole on the other side of the clamp cover plate 32 and pre-tightened with the fastening nut 310).

[0033] Operate the bidirectional ratchet 28 to drive the ratchet shaft 27, along with sleeves 21 and 22, to rotate. Since the threads of the left-hand screw 25 and right-hand screw 26 are opposite, they will move in opposite directions (shortening) or extend, thus adjusting the length of the entire screw extension assembly 2. This maintains a 50mm-80mm gap between the clamping assembly 3 and the insulator cap. Then, fully tighten the fastening assembly on the other side of the clamp cover plate 32 and the other side of the clamp base 31. Remove the original clamping parts on the insulator cap. Operate the bidirectional ratchet 28 to drive the left-hand screw 25 and right-hand screw 26 to extend synchronously, smoothly pushing the cantilever tube out of the insulator cap. Remove the fixing pin connecting the insulator to separate the insulator from the cantilever, allowing for the removal of the old insulator and the installation of the new one. Align the steel cap of the new insulator with the cantilever tube, and reverse the bidirectional ratchet 28 to simultaneously shorten the left-hand screw 25 and the right-hand screw 26, slowly pushing the cantilever tube into the steel cap of the new insulator until it is in place. Finally, install the clamping assembly of the insulator steel cap, and after confirming that the installation is secure, disassemble the clamping assembly 3 and the base assembly in sequence to complete the entire replacement operation.

[0034] For those skilled in the art, various corresponding changes and modifications can be made based on the above technical solutions and concepts, and all such changes and modifications should be included within the protection scope of the claims of this utility model.

Claims

1. A universal integrated cantilever insulator replacement device, characterized in that, It includes a base assembly, a lead screw telescopic assembly, and a clamping assembly; one end of the base assembly and the lead screw telescopic assembly are connected, and the other end of the lead screw telescopic assembly is connected to the clamping assembly. The clamping assembly includes a clamping base, a clamping cover plate, a combination pin, a fixing pin, a fastening assembly, a clamping reinforcement cover, and a hexagonal head bolt with holes. The clamping cover plate is located at one end of the clamping base, and one side of the clamping base and the clamping cover plate are hinged by the combination pin. The other side of the clamping base and the clamping cover plate are detachably connected by the fastening assembly. The clamping reinforcement cover is installed at the other end of the clamping base. The opposite sides of the clamping base and the clamping cover plate are both symmetrical arc surfaces. The two sides of the clamping reinforcement cover... Both sides are provided with pin holes and arc-shaped holes. The pin holes and bolt holes of the lead screw telescopic assembly and the clamp reinforcement cover are respectively provided at the corresponding positions. The fixing pin passes through the pin hole on the lead screw telescopic assembly and the pin holes on both sides of the clamp reinforcement cover. The clamp reinforcement cover can rotate up and down around the fixing pin. The hexagonal head screw with hole bolt passes through the bolt hole on the lead screw telescopic assembly and the arc-shaped holes on both sides of the clamp reinforcement cover. When the clamp reinforcement cover rotates up and down, the two ends of the hexagonal head screw with hole bolt move in the arc-shaped holes on both sides of the clamp reinforcement cover.

2. The universal integrated cantilever insulator replacement device according to claim 1, characterized in that, The clamping assembly also includes a bushing, which comprises two symmetrical arc-shaped plates. The two arc-shaped plates are symmetrically and detachably mounted on the arc surfaces of the clamp base and the clamp cover plate by screws.

3. The universal integrated cantilever insulator replacement device according to claim 1, characterized in that, The basic base assembly includes an upper clamp, a lower clamp, a T-shaped fastening assembly, rotating lugs, and a rotating shaft. The upper clamp and the lower clamp are locked together by the T-shaped fastening assembly, forming a clamping mechanism for holding the rotating pin of the wrist arm base. The top of the upper clamp is provided with a rotating shaft mounting seat, and the rotating shaft is vertically disposed inside the rotating shaft mounting seat. One end of the rotating lugs is connected to the rotating shaft and can swing back and forth around the rotating shaft. The left-hand lead screw of the lead screw extension assembly is rotatably connected to the other end of the rotating lugs via a connecting pin.

4. The universal integrated cantilever insulator replacement device according to claim 1, characterized in that, The lead screw telescopic assembly includes a first sleeve, a second sleeve, a left-hand lead screw nut, a right-hand lead screw nut, a left-hand lead screw, a right-hand lead screw, a ratchet shaft, and a double-ended ratchet. The ratchet shaft is connected to one end of the first sleeve and one end of the second sleeve via internal splines. The double-ended ratchet is sleeved and installed in the middle of the ratchet shaft. The left-hand lead screw nut is installed at the other end of the first sleeve and cooperates with the left-hand lead screw. The right-hand lead screw nut is installed at the other end of the second sleeve and cooperates with the right-hand lead screw. The thread directions of the left-hand lead screw and the right-hand lead screw are opposite. The right-hand lead screw has a pin hole and a bolt hole at positions corresponding to the pin hole and the arc hole of the clamp reinforcing cover, respectively.

5. The universal integrated cantilever insulator replacement device according to claim 1, characterized in that, The fastening assembly includes a pin, a hinge bolt, and a fastening nut that matches the hinge bolt. The pin is connected through the top and bottom of the other side of the clamp base. One end of the hinge bolt is provided with a socket hole and is sleeved onto the pin through the socket hole. The other side of the clamp cover plate is provided with a connection hole corresponding to the hinge bolt. The other end of the hinge bolt passes through the connection hole and is fastened with a fastening nut.

6. The universal integrated cantilever insulator replacement device according to claim 2, characterized in that, The inner cavity formed by the clamp base and clamp cover plate is adapted to the 70mm diameter of the arm tube, and the inner cavity formed by the two arc plates of the bushing is adapted to the 60mm diameter of the arm tube.

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