Overhead line lifting device for power transmission line

Abstract

The invention relates to an overhead line lifting device for a power transmission line, which comprises an electric pole, a driving mechanism, a guide wheel group and a lifting mechanism, a cross arm is arranged at the upper part of the electric pole, and an insulator is arranged at the end part of the cross arm. During use, an overhead line is placed on the upper side of the bearing seat on the outer side of the supporting plate. The electric capstan is started, the electric capstan winds the twisted rope, the twisted rope pulls the supporting plate to move upwards through the guiding effect of the guide wheel set, and the supporting plate drives the inner plate, the bearing base and the overhead line placed on the bearing base to be lifted upwards together till the overhead line reaches the needed height. The whole construction process is free of manual operation, time-saving, labor-saving, safe and efficient.

Description

Technical Field

[0001] This invention belongs to the technical field of power line lifting equipment, specifically relating to an overhead line lifting device for power transmission lines. Background Technology

[0002] During the construction and renovation of power transmission lines, when overhead lines are being installed on insulators, it is difficult to lift them onto the insulators manually. In traditional overhead line construction and maintenance, lifting and securing conductors usually relies on manual labor using simple tools such as pulley blocks, ropes, and tensioners. These traditional methods have the following limitations: The operation process is cumbersome and highly dependent on manual labor. The lifting speed and position adjustment are slow, especially under heavy load or complex working conditions, resulting in low construction efficiency and high labor intensity for personnel. The horizontal position, height above the ground, and angle of the conductor are mainly adjusted manually based on experience, making it difficult to achieve accurate and stable positioning, which affects the installation quality. Traditional line lifting tools are simply designed, and may cause damage to the conductor insulation layer or metal surface layer due to concentrated pressure or unreasonable structure when fixing overhead lines. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and solve the problems mentioned in the above-mentioned technical background.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an overhead line lifting device for transmission lines, comprising a pole, a crossarm provided on the upper part of the pole, an insulator provided at the end of the crossarm, and further comprising: Drive mechanism: The drive mechanism includes a mobile vehicle with wheels at the bottom and an electric winch fixedly mounted on the upper side of the mobile vehicle, with a winch rope wound around the outside of the electric winch; Guide wheel assembly: The guide wheel assembly is placed on the upper side of the crossarm. The guide wheel assembly includes a buckle seat. Guide wheels are rotatably arranged on both the left and right sides of the buckle seat. A short vertical plate is fixedly arranged on the lower side of the buckle seat. A hook is movably arranged inside the short vertical plate. The hook is used to cooperate with the crossarm for fixation. Lifting mechanism: The lifting mechanism includes a support plate, and a collar is provided at one end of the support plate near the pole. The support plate is sleeved on the outside of the pole through the collar. Lifting rings are symmetrically fixed on the outside of the support plate. The winch rope is connected to the lifting rings after passing through the guide wheel assembly. An inner plate is movably provided at the end of the support plate away from the collar. A support seat is provided on the upper side of the inner plate. An overhead line is placed on the upper side of the support seat.

[0005] The short vertical plate has a sliding groove inside, and the hook is slidably engaged inside the sliding groove. A clamping spring is provided between the upper side of the hook and the sliding groove. The clamping spring drives the hook to move within the sliding groove, thereby engaging and fixing the hook to the side of the crossbeam.

[0006] The collar includes symmetrically arranged semi-rings, with one end of each semi-ring hinged together by a hinge pin. A fixing block is provided at the other end of each semi-ring, and ball bearings are provided on the inner surface of each semi-ring. The fixing blocks can be internally connected and fixed using fixing bolts.

[0007] A front groove is provided inside the semi-ring near the tray, and a positioning component is provided inside the front groove. The positioning component is fixedly connected to the tray.

[0008] The positioning component includes positioning holes and a surrounding block. The positioning holes are evenly distributed at the bottom of the front groove. A rod is movably disposed inside the surrounding block. The lower end of the rod passes through the surrounding block and cooperates with the positioning hole. A pull pin is provided at the upper end of the rod. A positioning spring is fixedly connected between the bottom of the pull pin and the surrounding block.

[0009] The inner plate is movably inserted into the tray, and a telescopic assembly is provided between the inner plate and the tray. The inner plate can telescopically move along the inside of the tray.

[0010] The telescopic assembly includes a telescopic screw and a screw sleeve. The telescopic screw is rotatably mounted on the upper side of the support plate and is connected to the output end of the drive element. The screw sleeve is fixedly mounted on the upper side of the inner plate and is screwed onto the outer side of the telescopic screw.

[0011] A steering assembly is provided between the inner plate and the support seat. The steering assembly includes a steering worm wheel and a steering worm. The steering worm wheel is rotatably disposed inside the inner plate. The upper side of the steering worm wheel is fixedly connected to the support seat. A steering worm is meshed on the outer side of the steering worm wheel. A handle is provided at the end of the steering worm.

[0012] Both ends of the support are equipped with wire clamping assemblies, which are used to clamp and limit the overhead line. Two wire clamping assemblies are provided to avoid stress concentration during the lifting of the overhead line.

[0013] The wire clamping assembly includes a base, a wire support, and clamps. The wire support is located in the middle of the upper side of the base. The clamps are symmetrically arranged on both sides of the base. An outer folding rod is hinged between the outer side of the base and the outer side of the clamps. An inner hinge rod is hinged between the inner side of the base and the inner side of the clamps. A top block is slidably arranged in the middle of the base. The upper side of the top block is fixedly connected to the wire support. Connecting rods are hinged between the two sides of the top block and the bottom ends of the two outer folding rods. A clamping spring is fixedly arranged between the lower side of the top block and the base.

[0014] This invention provides an overhead line lifting device for power transmission lines, which has the following advantages: The drive mechanism includes a mobile trolley with wheels at the bottom for easy movement of the device to the work site. The electric winch winds up and unwinds the rope, and guided by guide wheels, it easily raises or lowers the pallet and overhead lines. The electric winch provides stable power output, significantly saving manpower and improving lifting efficiency compared to manual lifting, while also allowing for better control of lifting speed and force, ensuring operational safety.

[0015] The guide wheel assembly's fastener is placed on the upper side of the crossbeam. The hooks inside the short vertical plate can slide along the groove and be fixed to the crossbeam under the action of the clamping spring. This allows the guide wheel assembly to be quickly installed onto the crossbeam, and the clamping spring provides a certain elastic force to ensure that the hooks are tightly fitted to the crossbeam. During the lifting process, the guide wheel assembly is not easy to shake or fall off, ensuring the overall stability of the device.

[0016] In the lifting mechanism, the support plate is fitted onto the outside of the pole via a collar consisting of two hinged semi-rings for easy installation and removal. The positioning assembly further enhances the stability of the support plate; the surrounding block can move within the front groove, and through the engagement of the insert rod with different positioning holes, the position of the support plate on the pole can be precisely adjusted and fixed according to actual needs. The inner plate is movably inserted into the support plate and its extension and retraction are adjusted via a telescopic assembly. The steering assembly adjusts the angle of the support seat through the meshing of a steering worm gear and a steering worm. Unlike the positioning assembly, the steering assembly allows for fine-tuning of the overhead line direction, making it more consistent with the overall line alignment and facilitating installation and fixation with insulators.

[0017] The clamping components at both ends of the bearing seat can effectively clamp and limit the overhead line, preventing it from shaking or falling off during lifting or use, thus ensuring the stability and safety of the overhead line. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the operation of an overhead line lifting device for power transmission lines according to the present invention.

[0019] Figure 2 This is a structural diagram of the guide wheel assembly of an overhead line lifting device for power transmission lines according to the present invention.

[0020] Figure 3 This is a structural diagram of the connection between the hook and the chute of an overhead line lifting device for power transmission lines according to the present invention.

[0021] Figure 4 This is a structural diagram of the lifting mechanism of an overhead line lifting device for power transmission lines according to the present invention.

[0022] Figure 5 This is a diagram of the collar structure of an overhead line lifting device for power transmission lines according to the present invention.

[0023] Figure 6This is a front grooving cross-sectional view of an overhead line lifting device for power transmission lines according to the present invention.

[0024] Figure 7 This is a cross-sectional view of the support plate of an overhead line lifting device for power transmission lines according to the present invention.

[0025] Figure 8 This is a top view of the internal steering assembly of an overhead line lifting device for power transmission lines according to the present invention.

[0026] Figure 9 This is an overall structural diagram of the clamping assembly of an overhead line lifting device for power transmission lines according to the present invention.

[0027] Figure 10 This is a diagram showing the internal structure of the clamping assembly of an overhead line lifting device for power transmission lines according to the present invention.

[0028] In the diagram: 1. Lifting mechanism; 101. Support plate; 102. Collar; 103. Lifting ring; 104. Inner plate; 105. Support seat; 110. Half ring; 111. Hinge shaft; 112. Fixing block; 113. Ball bearing; 114. Front side groove; 120. Positioning assembly; 121. Positioning hole; 122. Surrounding block; 123. Insert rod; 124. Pull pin; 125. Positioning spring; 130. Telescopic assembly; 131. Telescopic screw; 132. Drive element; 133. Screw sleeve; 140. Steering assembly; 141. Steering worm gear; 142. Steering worm. 1. Pole; 143. Handle; 150. Wire clamping assembly; 151. Base; 152. Wire support; 153. Clamp; 154. Outward folding rod; 155. Inward hinge rod; 156. Top block; 157. Connecting rod; 158. Wire clamping spring; 2. Guide wheel assembly; 201. Buckle seat; 202. Guide wheel; 203. Short vertical plate; 204. Hook; 205. Slide groove; 206. Clamping spring; 3. Drive mechanism; 301. Moving vehicle; 302. Wheel; 303. Electric winch; 304. Winch rope; 4. Pole; 5. Crossarm; 6. Insulator; 7. Overhead line. Detailed Implementation

[0029] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention. Example 1

[0030] Please see Figures 1 to 3 A lifting device for overhead power transmission lines includes a pole 4, a crossarm 5 mounted on the upper part of the pole 4, an insulator 6 mounted at the end of the crossarm 5, and further includes: Drive mechanism 3: The drive mechanism 3 includes a mobile vehicle 301, the bottom of which is provided with wheels 302, and an electric winch 303 is fixedly provided on the upper side of the mobile vehicle 301. A winch rope 304 is wound around the outside of the electric winch 303. Guide wheel assembly 2: The guide wheel assembly 2 is placed on the upper side of the crossbeam 5. The guide wheel assembly 2 includes a buckle 201. Guide wheels 202 are rotatably arranged on both the left and right sides of the buckle 201. A short vertical plate 203 is fixedly arranged on the lower side of the buckle 201. A hook 204 is movably arranged inside the short vertical plate 203. The hook 204 is used to cooperate with the crossbeam 5 for fixation. Lifting Mechanism 1: The lifting mechanism 1 includes a support plate 101. A collar 102 is provided at one end of the support plate 101 near the pole 4. The support plate 101 is sleeved on the outside of the pole 4 through the collar 102. Lifting rings 103 are symmetrically fixed on the outside of the support plate 101. The twisted rope 304 is connected to the lifting ring 103 after passing through the guide wheel group 2. An inner plate 104 is movably provided at one end of the support plate 101 away from the collar 102. A support seat 105 is provided on the upper side of the inner plate 104. An overhead line 7 is placed on the upper side of the support seat 105.

[0031] Furthermore, the short vertical plate 203 has a sliding groove 205 inside, and the hook 204 is slidably engaged inside the sliding groove 205. A clamping spring 206 is provided between the upper side of the hook 204 and the sliding groove 205. Under the action of the clamping spring 206, the hook 204 inside the short vertical plate 203 can slide along the sliding groove 205 and cooperate with the crossbeam 5 for fixation.

[0032] When using this device, the mobile cart 301 equipped with wheels 302 is moved to a suitable position, close to the pole 4, for convenient subsequent operation. The buckle 201 of the guide wheel assembly 2 is placed on the upper side of the crossarm 5. Under the action of the clamping spring 206, the hook 204 in the short vertical plate 203 can slide along the slide groove 205 and cooperate with and fix it to the crossarm 5, ensuring that the hook 204 is tightly fitted to the crossarm 5, and the guide wheel assembly 2 is not easy to shake or fall off during the lifting process. The collar 102 of the lifting mechanism 1 near the pole 4 is put on the outside of the pole 4.

[0033] When it is necessary to lift the overhead line 7, the rope 304 wound around the outside of the electric winch 303 is passed through the guide wheel 202 of the guide wheel group 2 and connected to the lifting ring 103 symmetrically fixed on the outside of the support plate 101. The overhead line 7 is placed on the support seat 105 on the outside of the support plate 101. The electric winch 303 is started, and the electric winch 303 winds up the rope 304. Guided by the guide wheel group 2, the rope 304 pulls the support plate 101 upward. The support plate 101 drives the inner plate 104, the support seat 105, and the overhead line 7 placed on the support seat 105 to rise together until the overhead line 7 reaches the required height. Example 2

[0034] Please see Figures 1 to 8 An overhead line lifting device for power transmission lines, comprising a pole 4, a crossarm 5 mounted on the upper part of the pole 4, an insulator 6 mounted at the end of the crossarm 5, and further comprising: Drive mechanism 3: The drive mechanism 3 includes a mobile vehicle 301, the bottom of which is provided with wheels 302, and an electric winch 303 is fixedly provided on the upper side of the mobile vehicle 301. A winch rope 304 is wound around the outside of the electric winch 303. Guide wheel assembly 2: The guide wheel assembly 2 is placed on the upper side of the crossbeam 5. The guide wheel assembly 2 includes a buckle 201. Guide wheels 202 are rotatably arranged on both the left and right sides of the buckle 201. A short vertical plate 203 is fixedly arranged on the lower side of the buckle 201. A hook 204 is movably arranged inside the short vertical plate 203. The hook 204 is used to cooperate with the crossbeam 5 for fixation. Lifting Mechanism 1: The lifting mechanism 1 includes a support plate 101. A collar 102 is provided at one end of the support plate 101 near the pole 4. The support plate 101 is sleeved on the outside of the pole 4 through the collar 102. Lifting rings 103 are symmetrically fixed on the outside of the support plate 101. The twisted rope 304 is connected to the lifting ring 103 after passing through the guide wheel group 2. An inner plate 104 is movably provided at one end of the support plate 101 away from the collar 102. A support seat 105 is provided on the upper side of the inner plate 104. An overhead line 7 is placed on the upper side of the support seat 105.

[0035] Furthermore, the short vertical plate 203 has a sliding groove 205 inside, and the hook 204 is slidably engaged inside the sliding groove 205. A clamping spring 206 is provided between the upper side of the hook 204 and the sliding groove 205. Under the action of the clamping spring 206, the hook 204 inside the short vertical plate 203 can slide along the sliding groove 205 and cooperate with the crossbeam 5 for fixation.

[0036] Furthermore, the collar 102 includes symmetrically arranged semi-rings 110, with one end of each semi-ring 110 hinged to the other end by a hinge pin 111. Each semi-ring 110 has a fixing block 112 at its other end, and each semi-ring 110 has ball bearings 113 on its inner surface. The ball bearings 113 on the inner surface of the semi-rings 110 reduce friction with the pole 4, allowing the collar 102 to move more smoothly on the pole 4.

[0037] Furthermore, a front groove 114 is provided inside the semi-ring 110 near the tray 101, and a positioning component 120 is provided inside the front groove 114.

[0038] Furthermore, the positioning component 120 includes positioning holes 121 and a surrounding block 122. The positioning holes 121 are evenly distributed at the bottom of the front groove 114. A rod 123 is movably disposed inside the surrounding block 122. The lower end of the rod 123 passes through the surrounding block 122 and cooperates with the positioning hole 121. A pull pin 124 is provided at the upper end of the rod 123. A positioning spring 125 is fixedly connected between the bottom of the pull pin 124 and the surrounding block 122. The cooperation between the rod 123 and the positioning hole 121 can precisely fix the device at any angle around the pole 4, meeting different operating position requirements.

[0039] Furthermore, the inner plate 104 is movably inserted into the tray 101, and a telescopic component 130 is provided between the inner plate 104 and the tray 101.

[0040] Furthermore, the telescopic assembly 130 includes a telescopic screw 131 and a screw sleeve 133. The telescopic screw 131 is rotatably disposed on the upper side of the support plate 101 and is connected to the output end of the drive element 132. The screw sleeve 133 is fixedly disposed on the upper side of the inner plate 104 and is screwed onto the outer side of the telescopic screw 131.

[0041] Furthermore, a steering assembly 140 is provided between the inner plate 104 and the support 105. The steering assembly 140 includes a steering worm gear 141 and a steering worm 142. The steering worm gear 141 is rotatably disposed inside the inner plate 104, and its upper side is fixedly connected to the support 105. The steering worm 142 is meshed with the outer side of the steering worm gear 141, and a handle 143 is provided at the end of the steering worm 142. By rotating the handle 143, the support 105 can be rotated horizontally, thereby precisely adjusting the laying angle or direction of the overhead line 7. The worm gear mechanism has self-locking properties and can maintain angle stability.

[0042] In another embodiment, the lifting mechanism 1 facilitates the adjustment of the device.

[0043] When adjusting the orientation of the tray 101 using the positioning component 120, the following steps are taken: pulling the pull pin 124 causes the insertion rod 123 to move upward, stretching the positioning spring 125. After moving the surrounding block 122 to a suitable position in the front groove 114, the pull pin 124 is released, and the insertion rod 123 is inserted into the corresponding positioning hole 121 under the action of the positioning spring 125, thus completing the initial positioning of the tray 101 on the pole 4.

[0044] The inner plate 104 is movably inserted into the tray 101 and its extension and retraction are adjusted via the telescopic assembly 130. Specifically, the drive element 132 is activated to rotate the telescopic screw 131. Since the screw sleeve 133 is fixed on the upper side of the inner plate 101 and screwed onto the outside of the telescopic screw 131, the rotation of the telescopic screw 131 will cause the screw sleeve 133 to move the inner plate 104 horizontally inside the tray 101, adjusting the length of the inner plate 104 extending out of the tray 101, thereby adjusting the horizontal position of the support 105.

[0045] The orientation of the support 105 can be finely adjusted via the steering assembly 140. Specifically, rotating the handle 143 at the end of the steering worm 142 causes the steering worm 142 to rotate. Because the steering worm wheel 141 meshes with the steering worm 142 and is rotatably disposed inside the inner plate 104, the rotation of the steering worm 142 will cause the steering worm wheel 141 to rotate, thereby causing the support 105, which is fixedly connected to the upper side of the steering worm wheel 141, to rotate.

[0046] In this embodiment, when the device is in use, the position and length of the crossarm 5 are first confirmed according to the actual situation. The orientation of the lifting mechanism 1 is adjusted by the positioning component 120 so that the support plate 101 is parallel to the crossarm 5. The extension length of the inner plate 104 is adjusted by the telescopic component 130 so that the support seat 105 is located on the outer side of the end of the crossarm 5. Then, the lifting mechanism 1 is moved upward along the pole 4 by the drive mechanism 3 until the lifting mechanism 1 is close to the crossarm 5, and the support seat 105 is located at the outer end of the crossarm 5 without contacting the crossarm 5. At this time, the overhead line 7 on the upper side of the support seat 105 has been lifted to be flush with the installation position of the insulator 6. Then, the inner plate 104 is retracted by the telescopic component 130, thereby moving the overhead line 7 closer to the insulator 6 until it reaches the predetermined installation position. During installation, the orientation of the overhead line 7 can be finely adjusted by the steering component 140. No manual operation is required throughout the construction process, saving time and effort, and ensuring safety and efficiency. Example 3

[0047] Please see Figures 1 to 10 A lifting device for overhead power transmission lines includes a pole 4, a crossarm 5 mounted on the upper part of the pole 4, an insulator 6 mounted at the end of the crossarm 5, and further includes: Drive mechanism 3: The drive mechanism 3 includes a mobile vehicle 301, the bottom of which is provided with wheels 302, and an electric winch 303 is fixedly provided on the upper side of the mobile vehicle 301. A winch rope 304 is wound around the outside of the electric winch 303. Guide wheel assembly 2: The guide wheel assembly 2 is placed on the upper side of the crossbeam 5. The guide wheel assembly 2 includes a buckle 201. Guide wheels 202 are rotatably arranged on both the left and right sides of the buckle 201. A short vertical plate 203 is fixedly arranged on the lower side of the buckle 201. A hook 204 is movably arranged inside the short vertical plate 203. The hook 204 is used to cooperate with the crossbeam 5 for fixation. Lifting Mechanism 1: The lifting mechanism 1 includes a support plate 101. A collar 102 is provided at one end of the support plate 101 near the pole 4. The support plate 101 is sleeved on the outside of the pole 4 through the collar 102. Lifting rings 103 are symmetrically fixed on the outside of the support plate 101. The twisted rope 304 is connected to the lifting ring 103 after passing through the guide wheel group 2. An inner plate 104 is movably provided at one end of the support plate 101 away from the collar 102. A support seat 105 is provided on the upper side of the inner plate 104. An overhead line 7 is placed on the upper side of the support seat 105.

[0048] Furthermore, the short vertical plate 203 has a sliding groove 205 inside, and the hook 204 is slidably engaged inside the sliding groove 205. A clamping spring 206 is provided between the upper side of the hook 204 and the sliding groove 205. Under the action of the clamping spring 206, the hook 204 inside the short vertical plate 203 can slide along the sliding groove 205 and cooperate with the crossbeam 5 for fixation.

[0049] Furthermore, the collar 102 includes symmetrically arranged semi-rings 110, with one end of each semi-ring 110 hinged to the other end by a hinge pin 111. Each semi-ring 110 has a fixing block 112 at its other end, and each semi-ring 110 has ball bearings 113 on its inner surface. The ball bearings 113 on the inner surface of the semi-rings 110 reduce friction with the pole 4, allowing the collar 102 to move more smoothly on the pole 4.

[0050] Furthermore, a front groove 114 is provided inside the semi-ring 110 near the tray 101, and a positioning component 120 is provided inside the front groove 114.

[0051] Furthermore, the positioning component 120 includes positioning holes 121 and a surrounding block 122. The positioning holes 121 are evenly distributed at the bottom of the front groove 114. A rod 123 is movably disposed inside the surrounding block 122. The lower end of the rod 123 passes through the surrounding block 122 and cooperates with the positioning hole 121. A pull pin 124 is provided at the upper end of the rod 123. A positioning spring 125 is fixedly connected between the bottom of the pull pin 124 and the surrounding block 122. The cooperation between the rod 123 and the positioning hole 121 can precisely fix the device at any angle around the pole 4, meeting different operating position requirements.

[0052] Furthermore, the inner plate 104 is movably inserted into the tray 101, and a telescopic component 130 is provided between the inner plate 104 and the tray 101.

[0053] Furthermore, the telescopic assembly 130 includes a telescopic screw 131 and a screw sleeve 133. The telescopic screw 131 is rotatably disposed on the upper side of the support plate 101 and is connected to the output end of the drive element 132. The screw sleeve 133 is fixedly disposed on the upper side of the inner plate 104 and is screwed onto the outer side of the telescopic screw 131.

[0054] Furthermore, a steering assembly 140 is provided between the inner plate 104 and the support 105. The steering assembly 140 includes a steering worm gear 141 and a steering worm 142. The steering worm gear 141 is rotatably disposed inside the inner plate 104, and its upper side is fixedly connected to the support 105. The steering worm 142 is meshed with the outer side of the steering worm gear 141, and a handle 143 is provided at the end of the steering worm 142. By rotating the handle 143, the support 105 can be rotated horizontally, thereby precisely adjusting the laying angle or direction of the overhead line 7. The worm gear mechanism has self-locking properties and can maintain angle stability.

[0055] Furthermore, the bearing seat 105 is provided with wire clamping components 150 at both ends, which are used to clamp and limit the overhead line 7.

[0056] Furthermore, the wire clamping assembly 150 includes a base 151, a wire support 152, and clamps 153. The wire support 152 is located in the middle of the upper side of the base 151. The clamps 153 are symmetrically arranged on both sides of the base 151. An outer bending rod 154 is hinged between the outer side of the base 151 and the outer side of the clamps 153. An inner hinge rod 155 is hinged between the inner side of the base 151 and the inner side of the clamps 153. A top block 153 is slidably arranged in the middle of the base 151. The upper side of the top block 153 is fixedly connected to the wire support 152. Connecting rods 157 are hinged between both sides of the top block 153 and the bottom ends of the two outer bending rods 154. A clamping spring 206 is fixedly arranged between the lower side of the top block 153 and the base 151. When the overhead line 7 is pressed into the line support 152, under the action of the clamping spring 206, the top block 156 descends and drives the two side claws 153 to retract inward simultaneously. This can effectively prevent the conductor from slipping or shifting during the lifting process, and also avoid damage to the conductor surface or insulation layer due to excessive rigid clamping force.

[0057] In another embodiment, to prevent the overhead line 7 from falling off during the lifting process, clamping components 150 are provided at both ends of the support 105.

[0058] In use, the overhead line 7 is placed on the line support 152 of the clamping assembly 150. The weight of the overhead line 7 presses down on the top block 156, causing the top block 156 to move downward and compress the clamping spring 158. Simultaneously, the connecting rods 157 on both sides of the top block 156 drive the bottom ends of the two outer bending rods 154 to move downward. Due to the hinge action of the outer bending rods 154 and the inner hinge rod 155, the two jaws 153 will move towards the middle, clamping the overhead line 7 placed on the line support 152. This achieves clamping and limiting of the overhead line 7, preventing it from shaking or falling off during lifting or use, and ensuring the stability and safety of the overhead line 7. After the overhead line 7 is installed on the insulator 6, its own weight is borne by the insulator 6. With the line support 152 no longer under pressure, the clamping spring 158 rebounds, causing the top block 156 to move upward, which in turn causes the jaws 153 on both sides to open, facilitating the separation of the clamping assembly 150 from the overhead line 7.

Claims

1. A lifting device for overhead lines of power transmission lines, comprising a pole, wherein a crossarm is provided on the upper part of the pole, and an insulator is provided at the end of the crossarm, characterized in that, Also includes: Drive mechanism: The drive mechanism includes a mobile vehicle with wheels at the bottom and an electric winch fixedly mounted on the upper side of the mobile vehicle, with a winch rope wound around the outside of the electric winch; Guide wheel assembly: The guide wheel assembly is placed on the upper side of the crossarm. The guide wheel assembly includes a buckle seat. Guide wheels are rotatably arranged on both the left and right sides of the buckle seat. A short vertical plate is fixedly arranged on the lower side of the buckle seat. A hook is movably arranged inside the short vertical plate. The hook is used to cooperate with the crossarm for fixation. Lifting mechanism: The lifting mechanism includes a support plate, and a collar is provided at one end of the support plate near the pole. The support plate is sleeved on the outside of the pole through the collar. Lifting rings are symmetrically fixed on the outside of the support plate. The winch rope is connected to the lifting rings after passing through the guide wheel assembly. An inner plate is movably provided at the end of the support plate away from the collar. A support seat is provided on the upper side of the inner plate. An overhead line is placed on the upper side of the support seat.

2. The overhead line lifting device for transmission lines as described in claim 1, characterized in that: The short vertical plate has a sliding groove inside, and the hook is slidably engaged inside the sliding groove. A clamping spring is provided between the upper side of the hook and the sliding groove.

3. The overhead line lifting device for transmission lines as described in claim 1, characterized in that: The collar includes symmetrically arranged semi-rings, with one end of the two semi-rings hinged together by a hinge shaft, and a fixing block provided at the other end of each of the two semi-rings. Ball bearings are provided on the inner surface of each of the two semi-rings.

4. The overhead line lifting device for transmission lines as described in claim 3, characterized in that: A front groove is provided inside the semi-ring near the tray, and a positioning component is provided inside the front groove.

5. The overhead line lifting device for transmission lines as described in claim 4, characterized in that: The positioning component includes positioning holes and a surrounding block. The positioning holes are evenly distributed at the bottom of the front groove. A rod is movably disposed inside the surrounding block. The lower end of the rod passes through the surrounding block and cooperates with the positioning hole. A pull pin is provided at the upper end of the rod. A positioning spring is fixedly connected between the bottom of the pull pin and the surrounding block.

6. The overhead line lifting device for transmission lines as described in claim 5, characterized in that: The inner plate is movably inserted into the tray, and a telescopic component is provided between the inner plate and the tray.

7. The overhead line lifting device for transmission lines as described in claim 6, characterized in that: The telescopic assembly includes a telescopic screw and a screw sleeve. The telescopic screw is rotatably mounted on the upper side of the support plate and is connected to the output end of the drive element. The screw sleeve is fixedly mounted on the upper side of the inner plate and is screwed onto the outer side of the telescopic screw.

8. The overhead line lifting device for transmission lines as described in claim 7, characterized in that: A steering assembly is provided between the inner plate and the support seat. The steering assembly includes a steering worm wheel and a steering worm. The steering worm wheel is rotatably disposed inside the inner plate. The upper side of the steering worm wheel is fixedly connected to the support seat. A steering worm is meshed on the outer side of the steering worm wheel. A handle is provided at the end of the steering worm.

9. The overhead line lifting device for transmission lines as described in claim 1, characterized in that: The bearing seat is provided with wire clamping components at both ends, which are used to clamp and limit the overhead line.

10. The overhead line lifting device for transmission lines as described in claim 9, characterized in that: The wire clamping assembly includes a base, a wire support, and clamps. The wire support is located in the middle of the upper side of the base. The clamps are symmetrically arranged on both sides of the base. An outer folding rod is hinged between the outer side of the base and the outer side of the clamps. An inner hinge rod is hinged between the inner side of the base and the inner side of the clamps. A top block is slidably arranged in the middle of the base. The upper side of the top block is fixedly connected to the wire support. Connecting rods are hinged between the two sides of the top block and the bottom ends of the two outer folding rods. A clamping spring is fixedly arranged between the lower side of the top block and the base.

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