Outdoor disconnecting link contact dismounting device

Abstract

The utility model relates to the technical field of electrical switch devices, in particular to an outdoor disconnecting link contact dismounting device. The outdoor disconnecting link contact disassembling and assembling device comprises a fixed seat, two shaft seats which are oppositely arranged at intervals are arranged on the fixed seat, a bidirectional screw rod is installed through the shaft seats, two opposite clamping jaws are assembled on the fixed seat in a guiding mode in the direction parallel to the bidirectional screw rod, and the two clamping jaws are matched with a positive thread and a negative thread of the bidirectional screw rod respectively. A disconnecting link contact supporting seat is arranged between the two clamping jaws on the fixing seat and provided with a connector supporting table used for supporting a contact finger connector of the disconnecting link contact in an opening of the disconnecting link contact, and the two clamping jaws form a contact finger used for compressing the disconnecting link contact on the connector supporting table. And the tail part of the contact finger is opened by taking the edge of the corresponding side of the supporting table as a fulcrum. According to the utility model, the problems that the disconnecting link contact structure is loose and the spring tension is large, so that parts cannot be dismounted and replaced are solved, the working efficiency is improved, and the resource waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical switch devices, in particular to a device for disassembling and assembling outdoor knife-switch contacts. Background Art

[0002] The disconnecting switch is the core equipment of a substation and also the equipment with the largest quantity in the substation. Its operating conditions directly determine whether the power grid can operate safely and stably; the accidents caused by the faults of the disconnecting switch are the most, and among them, the overheating of the knife-switch contacts of the disconnecting switch accounts for more than 90% of the faults of the disconnecting switch.

[0003] The main body of the knife-switch contact of the disconnecting switch is a finger seat, which includes a box-shaped finger connecting body and a conductive tube arranged on the finger connecting body. Fingers are arranged on opposite sides of the finger connecting body, and an opening for the knife-switch of the disconnecting switch to cut in is defined between the fingers on both sides. Among them, the fingers on both sides are installed on the finger connecting body through the cooperation of a retaining pin and a clamping spring. Specifically, the rear end of the finger fits on the corresponding outer surface of the finger connecting body, and the outer peripheral surface of the retaining pin presses the rear end of the finger on the finger connecting body, and the pressure is provided by the clamping spring connected between the retaining pins on both sides.

[0004] During operation, the knife-switch of the disconnecting switch overcomes the elastic force of the fingers and the pulling force of the clamping spring on the fingers to open the opening, and the fingers clamp the knife-switch under the action of the clamping spring and make reliable contact with it. After long-term use, due to frequent opening and closing and long-term stretching, the clamping spring will show fatigue, resulting in poor contact between the fingers and the knife-switch. As a result, the resistance at the contact position will increase, leading to overheating and severely burning the fingers in severe cases.

[0005] In the prior art, regular maintenance is mostly used to ensure the normal operation of the disconnecting switch. However, since even after fatigue occurs, the clamping spring still has a large elastic force, and replacing the fingers requires stretching the clamping spring. Coupled with the fact that the maintenance of the disconnecting switch is mostly high-altitude work, the above problems make it extremely difficult to replace the fingers alone. Therefore, at present, the maintenance of the disconnecting switch is to replace the entire knife-switch contact, and the probability of damage to the finger connecting body and conductive tube of the knife-switch contact is extremely small. Replacing the entire knife-switch contact causes a waste of a large amount of resources. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a device for disassembling and assembling outdoor knife-switch contacts to solve the problem that it is difficult to disassemble and assemble the knife-switch contacts of the disconnecting switch.

[0007] To solve the above problems, the device for disassembling and assembling outdoor knife-switch contacts of the utility model adopts the following technical solutions:

[0008] An outdoor disconnect switch contact disassembly and assembly device includes a fixed seat. On the fixed seat, there are two spaced-apart shaft seats. A bidirectional lead screw is installed through the shaft seats. On the fixed seat, two opposite jaws are also assembled in a guiding manner along a direction parallel to the bidirectional lead screw. The two jaws are respectively in threaded engagement with the positive and negative threads of the bidirectional lead screw. On the fixed seat, between the two jaws, there is a disconnect switch contact support seat. The disconnect switch contact support seat has a connecting body support platform for supporting the finger connecting body of the disconnect switch contact within the opening of the disconnect switch contact. The two jaws form a structure for compressing the fingers of the disconnect switch contact on the connecting body support platform, so that the fingers open the tails with the corresponding side edges of the support platform as the fulcrums.

[0009] Further, on the inner side surface of the jaw, there is a card slot for cooperating with the fingertips of the finger.

[0010] Further, between the two shaft seats of the fixed seat, a guiding rod is connected. The jaw is installed on the fixed seat through the guiding rod.

[0011] Further, there are at least two guiding rods, and they are arranged in parallel at intervals.

[0012] Further, the jaw includes an upper part, a lower part, and a connecting part connected between the upper and lower parts. The upper and lower parts and the connecting part form an "I" - shaped structure. The connecting part is located between adjacent two guiding rods and is in guiding cooperation with the guiding rods.

[0013] Further, the bidirectional lead screw is located below the guiding rod, and the jaw cooperates with the bidirectional lead screw through its lower part.

[0014] Further, the disconnect switch contact support seat is installed on the guiding rod through a base platform provided at its bottom.

[0015] Further, the connecting body support platform is installed on the base platform through a support rod.

[0016] Further, on the fixed seat, there is a clamping device for fixing on a utility pole.

[0017] Further, the clamping device is a hoop, and an adjustable buckle is provided on the hoop.

[0018] Further, the fixed seat is composed of a U - shaped plate. The shaft seats are composed of the two vertical walls of the U - shaped plate. The clamping device is connected to the bottom wall of the U - shaped plate.

[0019] Further, at least one end of the bidirectional lead screw extends beyond the corresponding shaft seat and is provided with a wrench interface.

[0020] Further, the fixed seat is composed of a U - shaped plate. The shaft seats are composed of the two vertical walls of the U - shaped plate.

[0021] Beneficial effects: The outdoor knife-switch contact disassembly and assembly device of the present utility model is a pioneering invention. Through this solution, when replacing the finger or spring of the contact, during disassembly, the finger of the knife-switch contact is placed between the two jaws, and the connecting body of the knife-switch contact is supported on the support platform of the knife-switch contact support seat. Rotate the bidirectional screw rod, and the bidirectional screw rod drives the two jaws to move towards each other, forming extrusion on the finger of the knife-switch contact. The finger opens its tail with the corresponding side edge of the support platform as the fulcrum, so that the tail of the finger of the knife-switch contact opens, and the finger of the knife-switch contact can be removed. During installation, place the finger of the knife-switch contact between the two jaws, and the connecting body of the knife-switch contact is supported at the knife-switch contact support seat. Rotate the bidirectional screw rod, and the bidirectional screw rod makes the two jaws move towards each other, forming extrusion on the finger of the knife-switch contact. The finger opens its tail with the corresponding side edge of the support platform as the fulcrum, and then align the finger of the knife-switch contact with the installation position. Rotate the bidirectional screw rod in the reverse direction, and the extrusion of the two jaws on the finger of the knife-switch contact is cancelled, and the installation of the finger of the knife-switch contact can be completed. The bidirectional screw rod adopted by the present utility model utilizes its self-locking function and labor-saving characteristics during installation or disassembly to drive the jaws to clamp the finger, replacing the clamping spring to exert force, keeping the knife-switch contact in an open state, and avoiding the problem that it is impossible to install or disassemble manually due to the loose structure of the finger of the knife-switch contact and the large spring tension during the disassembly and assembly process. The knife-switch contact support seat of the present utility model provides a stable fixed point for the disassembly, installation and assembly of the finger of the knife-switch contact. The present utility model simplifies the disassembly and assembly process of the finger of the knife-switch contact, facilitates the replacement of the finger alone, improves work efficiency, and reduces the waste of human and material resources. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the use state of an embodiment of the outdoor knife-switch contact disassembly and assembly device of the present utility model.

[0023] In the figure: 1 - fixed seat; 2 - guide rod; 3 - left jaw; 31 - left jaw card slot; 4 - right jaw; 41 - right jaw card slot; 5 - knife-switch contact support seat; 51 - contact connecting body support platform; 52 - support rod; 53 - support seat base; 6 - electric wrench; 7 - knife-switch contact; 71 - finger of the knife-switch contact; 72 - contact connecting body; 8 - bidirectional screw rod; 9 - adjustable buckle; 10 - anti-slip rubber ring. Detailed Implementation Modes

[0024] The following further describes the features and performance of the present utility model in detail in combination with embodiments.

[0025] The bidirectional screw rod adopted by the present utility model drives the jaws to clamp the finger during installation or disassembly, replacing the clamping spring to exert force, and utilizes its self-locking function to keep the knife-switch contact in an open state, avoiding the problem that it is impossible to install or disassemble manually due to the loose structure of the finger of the knife-switch contact and the large spring tension during the disassembly and assembly process.

[0026] As a basic solution, the components of the outdoor knife switch contact disassembly and assembly device of the utility model include a fixing seat, a left clamping claw, a right clamping claw, a bidirectional screw rod and a knife switch contact support seat. Figure 1 As shown, the fixed seat 1 is used as the basis of the whole device, and the bidirectional screw rod 8 and the left clamping jaw 3 and the right clamping jaw 4 are integrated on the fixed seat 1. Therefore, it is necessary to ensure that the fixed seat 1 has a certain strength. At the same time, in order to install the bidirectional screw rod 8, it is necessary to arrange shaft seats on it at intervals to cooperate with the two ends of the bidirectional screw rod 8 respectively. Since it is often used in high altitudes, in order to have a certain degree of portability, in a preferred embodiment, the fixed seat is set as a U-shaped plate structure, and the two vertical walls of the U-shaped plate are used as two shaft seats respectively. The function of the clamping jaw is to clamp the two side contact fingers 71 of the knife switch contact 7 so that the tail parts of the two side contact fingers 71 are separated and the tail ends of the contact fingers 71 are stretched. The function of the knife switch contact support seat 5 is to realize the positioning of the knife switch contact 7 to be disassembled and assembled, so it is arranged between the two clamping jaws, and the distance from the two clamping jaws is equal. The function of the bidirectional screw rod 8 is to drive the two clamping jaws to move toward or away from each other to clamp and release the contact fingers, so it is threadedly matched with the two clamping jaws.

[0027] As a preferred embodiment, the fingertips of the knife switch contact fingers 71 are attached to the inner side surfaces of the clamping jaws 3 and 4, and the tails are supported by the support platform 51 of the knife switch contact support 5 as a fulcrum. The fingers are easy to fall off when the clamping jaws 3 and 4 are driven by the bidirectional screw 8. Therefore, the inner side surfaces of the clamping jaws are provided with slots 31 and 41 to limit the installation position of the fingers 71, which can better fix the fingers 71 when the bidirectional screw 8 squeezes the fingers 71, so that the fingers 71 are not easy to fall off when squeezed by the clamping jaws.

[0028] As a preferred embodiment, a guide rod 2 is provided between the two shaft seats of the fixed seat 1, and the guide rod 2 is in guiding cooperation with the clamping jaws 3 and 4, and a knife switch contact support seat 5 is also fixed between the two clamping jaws on the guide rod 2. The guide rod 2 provides a track for the movement of the clamping jaws 3 and 4 in the process of the clamping jaws 3 and 4 squeezing the contact fingers 71 and limits the movement direction of the clamping jaws 3 and 4 to only left and right translation.

[0029] As a preferred embodiment, at least two guide rods 2 are provided and arranged in parallel and spaced apart. With long-term use, the knife switch contact support seat 5 fixed on the guide rod and the guide rod 2 will become loose, and the knife switch contact support seat 5 will be offset. In order to avoid this situation, two guide rods 2 are provided and arranged in parallel and spaced apart, so that the knife switch contact support seat 5 is fixed by two guide rods at the same time. Compared with the knife switch contact support seat 5 being fixed by one guide rod, the knife switch contact support seat 5 fixed by two guide rods will be more stable and reliable. Even if the fit is loose, it will have little effect on the use effect of the overall device. In the process of the clamping jaws 3 and 4 squeezing the contact finger 71, the two guide rods limit the movement track of the clamping jaws.

[0030] As a preferred embodiment, the clamping jaws 3 and 4 include an upper part, a lower part, and a connecting part connecting the upper and lower parts. In order to better guide and cooperate with the guide rod 2 and to better stabilize the card slot part without deviation during the process of the clamping jaws squeezing the contact fingers, therefore, without affecting the use effect, a part of both ends of the connecting part is removed, so that the upper and lower parts and the connecting part form a "work" - shaped structure.

[0031] As a preferred embodiment, during the process of the bidirectional lead screw 8 rotating to drive the clamping jaws 3 and 4 to apply force to the contact fingers 71, the clamping jaws are in threaded cooperation with the bidirectional lead screw 8. In order to have enough space for placing the contact finger support seat 5 and the contact finger connecting body 72, the threaded holes of the clamping jaws cooperating with the bidirectional lead screw 8 are opened in the lower part of the clamping jaws. The upper part of the clamping jaws is in contact with the tips of the contact fingers, and the middle connecting part is in guiding cooperation with the guide rod 2. Therefore, in terms of spatial position, the bidirectional lead screw 8 needs to be located below the guide rod 2.

[0032] As a preferred embodiment, the knife - switch contact support seat 5 is installed on the guide rod 2 through the base 53 provided at its bottom. The knife - switch contact support seat 5 provides a stable support for the disassembly and assembly process of the knife - switch contact 7. Therefore, the knife - switch contact support seat 5 needs to be fixed on the fixed seat 1. Directly fixing the knife - switch contact support seat 5 on the fixed seat 1 will affect the transmission between the bidirectional lead screw 8 and the clamping jaws 3 and 4. Therefore, the base 53 at the bottom of the knife - switch contact support seat 5 is fixed on the guide rod 2 between the two clamping jaws.

[0033] As a preferred embodiment, the connecting body support platform 51 is installed on the base 53 provided at the bottom of the knife - switch contact support seat 5 through the support rod 52. The tail of the knife - switch contact finger 71 needs to be fixed on the knife - switch contact connecting body 72. In order to place the connecting body 72 at the same height as the tail of the contact finger 71, the connecting body support platform 51 needs to have a certain thickness. By setting the support rod 52 on the base 53 at the bottom of the support seat 5 and installing the connecting body support platform 51 on the base 53 provided at the bottom of the knife - switch contact support seat 5 through the support rod 52, the connecting body support platform 51 can be relatively thinner on the premise of meeting its usage requirements, which can reduce the material consumption to a certain extent and save costs.

[0034] As a preferred embodiment, the knife - switch contacts disassembled and assembled by the outdoor knife - switch contact disassembly and assembly device of the present utility model are usually the knife - switch contacts of the disconnecting switch on the electric pole. Originally, when replacing the contact fingers, it was necessary to remove the knife - switch contact and take it below the electric pole for disassembly and replacement, and then carry the contact onto the electric pole for installation. Since the fixed seat is connected with a clamping device for fixing on the electric pole, the contact fingers can be replaced once when going up the pole, avoiding going up and down the pole multiple times, saving time and improving work efficiency.

[0035] As a preferred embodiment, the clamping device is a hoop, and an adjustable buckle 11 is arranged on the hoop. The hoop generally includes two semi-circular hoop rings, which can withstand large pressure and friction after processing and can fix the whole device on the electric pole well. However, the size of the hoop ring is fixed, and it is not easy to adjust the clamping force of the hoop on the electric pole when locking the hoop ring on the electric pole. By arranging an adjustable buckle on the hoop, the fixing force of the hoop on the electric pole can be adjusted, and the hoop can also adapt to electric poles with different diameters.

[0036] As a preferred embodiment, at least one end of the bidirectional screw rod 8 extends beyond the corresponding shaft seat for facilitating the cooperation with the corresponding wrenching tool. That is, a wrench interface is arranged at the end of the bidirectional screw rod 8 extending beyond the shaft seat, which can cooperate better with the wrench, saving time and effort.

[0037] The implementation principle of this embodiment is as follows: During disassembly, first fix the fixed seat 1 on the electric pole through the hoop, use the adjustable buckle 9 to adjust the hoop to a proper state of clamping the electric pole, and the anti-slip rubber ring 10 plays a role in anti-slip, making the knife-switch contact support seat 5 fixed on the guide rod 2 of the fixed seat 1 stable and reliable. Place the knife-switch contact 7 on the contact connecting body support platform 51 of the knife-switch contact support seat 5, and insert the finger 71 of the knife-switch contact 7 between the left clamp 3 and the right clamp 4. The left clamp groove 31 and the right clamp groove 41 on the upper part of the clamp hold the finger in the groove. The contact connecting body support platform 51 of the knife-switch contact support seat 5 supports the contact connecting body 72 of the knife-switch contact 7. Rotate the bidirectional screw rod 8 with the electric wrench 6, and the rotation of the bidirectional screw rod 8 drives the two clamps threadedly connected with the bidirectional screw rod 8 to move towards each other along the track restricted by the two guide rods 2. The two clamps drive the groove to apply force to the finger, so that the finger 71 opens the tail with the corresponding side edge of the support platform 52 as the fulcrum, and the knife-switch contact finger can be removed.

[0038] During installation, place the knife-switch contact 7 on the support platform 51 of the knife-switch contact support seat 5. Then, put the finger 71 of the knife-switch contact 7 between the left jaw 3 and the right jaw 4, and snap the fingertip of the finger into the clamping grooves 31 and 41 at the upper parts of the two jaws. The support platform 51 of the knife-switch contact support seat 5 supports at the contact connecting body 72 of the knife-switch contact 7. In this way, the left jaw clamping groove 31 and the right jaw clamping groove 41 on the two jaws firmly fix the finger in the clamping groove, and the knife-switch contact support seat 5 stabilizes the connecting body 72 of the knife-switch contact 7 at the contact connecting body support platform 51. Start the electric wrench 6 in the low-speed gear. The electric wrench 6 drives the bidirectional lead screw 8 to rotate. The rotation of the bidirectional lead screw 8 drives the two jaws that are threadedly connected to the bidirectional lead screw 8 to move towards each other. The jaws 3 and 4 drive the clamping grooves 31 and 41 on them to apply force to the finger 71, causing the finger 71 to open its tail with the corresponding side edge of the support platform 51 as the fulcrum. Then, align the finger 71 of the knife-switch contact 7 with the installation position. The electric wrench 6 rotates the bidirectional lead screw 8 in the reverse direction, and the force applied by the two jaws to the finger through the clamping grooves is withdrawn. The extrusion of the finger 71 of the knife-switch contact 7 is withdrawn, and the installation of the finger 71 of the knife-switch contact 7 is completed.

[0039] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. The patent protection scope of the present utility model is subject to the claims. Any equivalent structural changes made by using the description and drawings of the present utility model should, by the same token, be included in the protection scope of the present utility model.

Claims

1. An outdoor disconnecting switch contact disassembly and assembly device, characterized in that, It includes a fixed seat, on which there are two relatively spaced shaft seats. A bidirectional lead screw is installed through the shaft seats. On the fixed seat, two opposite jaws are also assembled in a guiding manner along a direction parallel to the bidirectional lead screw. The two jaws are respectively in threaded engagement with the positive and reverse threads of the bidirectional lead screw. A knife-switch contact support seat is arranged between the two jaws on the fixed seat. The knife-switch contact support seat has a connecting body support platform for supporting the finger connecting body of the knife-switch contact within the opening of the knife-switch contact. The two jaws form fingers for compressing the knife-switch contact on the connecting body support platform, so that the fingers open their tails with the corresponding side edges of the support platform as the fulcrums.

2. The outdoor knife-switch contact disassembly and assembly device according to claim 1, characterized in that, On the inner side surface of the jaw, there is a clamping groove for cooperating with the fingertips of the fingers.

3. The outdoor knife-switch contact disassembly and assembly device according to claim 1, characterized in that, A guiding rod is connected between the two shaft seats of the fixed seat, and the jaw is installed on the fixed seat through the guiding rod.

4. The outdoor disconnecting switch contact disassembly and assembly device according to claim 3, characterized in that, There are at least two guiding rods, and they are arranged in parallel at intervals.

5. The outdoor disconnecting switch contact disassembly and assembly device according to claim 4, wherein, The jaw includes an upper part, a lower part and a connecting part connected between the upper and lower parts. The upper and lower parts and the connecting part form an "I" - shaped structure. The connecting part is located between adjacent two guiding rods and is in guiding cooperation with the guiding rods.

6. The outdoor disconnecting switch contact disassembly and assembly device according to claim 5, characterized in that, The bidirectional lead screw is located below the guiding rod, and the jaw cooperates with the bidirectional lead screw through its lower part.

7. The outdoor knife-switch contact disassembly and assembly device according to claim 4, characterized in that, The knife-switch contact support seat is installed on the guiding rod through a base provided at its bottom.

8. The outdoor knife-switch contact disassembly and assembly device according to claim 7, characterized in that, The connecting body support platform is installed on the base through a support rod.

9. The outdoor disconnecting switch contact disassembly and assembly device according to any one of claims 1-8, characterized in that, A clamping device for fixing on an electric pole is connected to the fixed seat.

10. The outdoor knife-switch contact disassembly and assembly device according to claim 9, characterized in that, The clamping device is a hoop, and an adjustable buckle is provided on the hoop.

11. The outdoor knife-switch contact disassembly and assembly device according to claim 10, wherein, The fixed seat is composed of a U - shaped plate. The shaft seats are composed of the two vertical walls of the U - shaped plate. The clamping device is connected to the bottom wall of the U - shaped plate.

12. The outdoor disconnecting switch contact disassembly and assembly device according to any one of claims 1-8, characterized in that, At least one end of the bidirectional lead screw extends beyond the corresponding shaft seat and is provided with a wrench interface.

13. The outdoor disconnecting switch contact disassembly and assembly device according to any one of claims 1-8, characterized in that, The fixed seat is composed of a U - shaped plate. The shaft seats are composed of the two vertical walls of the U - shaped plate.

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