Ground line lifter and lifting method

Abstract

The application provides a ground wire lifting device and a lifting method. The ground wire lifting device comprises a supporting base, a tightening device, a guide assembly and a traction member. The supporting base is detachably connected to a ground wire support and is provided with a heightening structure. At least two guide assemblies are arranged at two ends of the supporting base. The tightening device is arranged on the supporting base and between the at least two guide assemblies. The tightening device comprises a rotating body. At least two traction members are arranged around the rotating body and the corresponding guide assemblies and move synchronously under the drive of the rotating body. The ground wire to be lifted is connected to the traction members. The top end of the heightening structure and the bottom surface of the supporting base have a preset lifting interval. Compared with a hand-operated hoist, the device can effectively shorten the stroke, avoid the situation that the ground wire cannot be lifted to the right position due to the length of the device, complete the effective lifting of the ground wire in the case that the vertical clearance between the hanging point and the ground wire is limited, and has the advantages of simple operation, high work efficiency and low safety risk.

Description

Technical Field

[0001] This application belongs to the technical field of transmission line maintenance equipment, specifically relating to a ground wire lifting device and lifting method. Background Technology

[0002] During the maintenance of ground wires on power transmission lines, it is necessary to remove or lift the ground wire as required for the maintenance work. Currently, a traction device is commonly used in conjunction with a lever hoist for operation. During operation, the traction device is attached to the hanging point on the ground wire bracket, the upper hook of the lever hoist is connected to the rope loop, and the lower hook hooks the ground wire. By pulling the handle, the chain is shortened to lift the ground wire.

[0003] However, the lever hoist has a certain length, and with limited vertical clearance between the attachment point and the ground wire, the hoist's body occupies most of the space, leaving very little room for tightening. This makes it difficult to effectively tighten the traction component, preventing the ground wire from being raised to the target height. In this situation, operators need to repeatedly change the attachment point position or add multiple reverse pulleys, making the operation cumbersome, inefficient, and posing safety risks. Summary of the Invention

[0004] Therefore, the technical problem to be solved by this application is to provide a ground wire lifting device and lifting method, which can provide a lifting distance for tightening operation within the limited clearance between the hanging point and the ground wire, thereby achieving effective lifting of the ground wire.

[0005] To address the aforementioned issues, a first aspect of this application provides a ground wire lifting device, comprising: a support base, a tensioner, a guide assembly, and a traction member; the support base is detachably connected to a ground wire bracket and has an elevation structure thereon; at least two guide assemblies are respectively disposed at both ends of the support base; the tensioner is disposed on the support base and located between the at least two guide assemblies. The tightener includes a rotating body, and at least two traction members are respectively wound around the rotating body and the corresponding guide assembly, and move synchronously under the drive of the rotating body; the ground wire to be lifted is connected to the traction member; The top of the elevated structure and the bottom surface of the support base have a preset lifting distance.

[0006] Optionally, the rotating body includes a main shaft with staggered first and second holes; one of the traction members has its head end passing through the first hole and fixed, and its tail end passing through the guide assembly at one end and hanging down; the head end of the other traction member passes through the second hole and is fixed to the main shaft in the opposite direction, and its tail end passes through the guide assembly at the other end and hangs down.

[0007] Optionally, the rotating body includes a traction wheel, which has a protruding first winding area and a second winding area along its circumference; at least two of the traction members are connected to hooks at their ends, wherein one of the traction members is wound around the first winding area in a first direction of rotation, and its end passes through the guide assembly at one end to connect to the first connection point of the ground wire to be lifted; the other traction member is wound around the second winding area in a second direction of rotation, and its end passes through the guide assembly at the other end to connect to the second connection point of the ground wire to be lifted; wherein the first direction of rotation and the second direction of rotation are opposite.

[0008] Optionally, the traction wheel includes a double-groove pulley, the first winding area is a first annular groove formed on the outer edge of the double-groove pulley, and the second winding area is a second annular groove formed on the outer edge of the double-groove pulley, with the first annular groove and the second annular groove arranged side by side along the axial direction.

[0009] Optionally, the tightener further includes a ratchet and pawl mechanism and a handle; the ratchet and pawl mechanism includes a ratchet and a pawl, the ratchet is coaxially fixedly connected to the rotating body, and the pawl is hinged to the housing of the tightener and engages with the ratchet; the handle is connected to the rotating body and is used to drive the rotating body to rotate.

[0010] Optionally, the guide assembly includes a guide bracket and a pulley. The guide bracket is fixed to the support base, and the pulley is installed in the guide bracket by a pin. A third annular groove is formed on the outer edge of the pulley, and the traction member is embedded in the third annular groove.

[0011] Optionally, the ground wire lifting device further includes a clamp, one end of which is detachably connected to the support base and fixed by fasteners; the ground wire bracket is provided with a lifting hole, and the other end of the clamp passes through the lifting hole by a bolt and fixes the support base to the ground wire bracket.

[0012] Optionally, the support base includes a base body with a strip-shaped hole extending vertically. Fasteners pass through the strip-shaped hole to fix the support base to the grounding bracket. The vertical installation height of the support base relative to the grounding bracket can be changed by adjusting the fixing position of the fasteners within the strip-shaped hole.

[0013] Optionally, the elevated structure includes a crossbeam, which is disposed at the top of the support base, and the tensioner and the guide assembly are respectively fixed to the crossbeam by bolts or welding.

[0014] A second aspect of this application provides a ground wire lifting method using the aforementioned ground wire lifting device, the method comprising: The support base is installed on the ground wire bracket, so that the top of the raised structure and the bottom surface of the support base form the preset lifting distance; At least two of the traction members are respectively wound around the rotating body of the tensioner and the corresponding guide assembly, and the ground wire to be lifted is connected to the end of the traction member; The tightener drives at least two of the traction members to move synchronously, causing the ground wire to rise within the travel space formed by the preset lifting interval until the ground wire is lifted to the target position.

[0015] Beneficial effects The ground wire lifting device and method provided in the embodiments of this application utilize a raised structure mounted on a support base. A preset lifting gap is formed between the top of the raised structure and the bottom surface of the support base, providing travel space for the tightening operation. Even with limited vertical clearance between the hanging point and the ground wire, the ground wire can be effectively lifted in one go. The rotating body of the tightener synchronously drives at least two traction components, which, guided by guide components at both ends of the support base, lift the ground wire, improving operational stability. The detachable connection between the support base and the ground wire bracket allows for quick installation and fixation of the device, simplifying operation, increasing work efficiency, and minimizing safety risks. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the ground wire lifter according to an embodiment of this application. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the ground wire lifter according to an embodiment of this application. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the tightening device according to an embodiment of this application. Figure 1 ; Figure 4 This is a schematic diagram of the structure of the tightening device according to an embodiment of this application. Figure 2 ; Figure 5 Examples of embodiments of this application Figure 1 A schematic diagram of the local structure at point A in the middle.

[0017] The reference numerals in the attached figures are as follows: 1. Support base; 11. Base body; 12. Elevating structure; 2. Tensioner; 21. Main shaft; 211. First hole; 212. Second hole; 22. Traction wheel; 221. First winding area; 222. Second winding area; 23. Ratchet and pawl mechanism; 24. Handle; 3. Guide assembly; 4. Traction component; 5. Hook; 6. Clamp; 10. Ground wire bracket; 20. Ground wire. Detailed Implementation

[0018] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0022] like Figures 1 to 5 As shown, according to a first aspect of an embodiment of this application, a ground wire lifting device is provided, including a support base 1, a tensioner 2, a guide assembly 3, and a traction member 4. The support base 1 is detachably connected to a ground wire bracket 10, and a lifting structure 12 is provided on the support base 1; at least two guide assemblies 3 are respectively disposed at both ends of the support base 1, and the tensioner 2 is disposed on the support base 1 and located between the at least two guide assemblies 3. The tensioner 2 includes a rotating body, and at least two traction members 4 are respectively wound around the rotating body and the corresponding guide assembly 3, and move synchronously under the drive of the rotating body. The ground wire 20 to be lifted is connected to the traction member 4, and a preset lifting distance is formed between the top of the lifting structure 12 and the bottom surface of the support base 1.

[0023] By setting up the elevated structure 12, a preset lifting gap is formed between the top of the elevated structure 12 and the bottom surface of the support base 1, allowing for sufficient travel space during the tightening operation. This enables effective lifting of the ground wire 20 even with limited vertical clearance between the hanging point and the ground wire 20. The rotating body of the tightener 2 synchronously drives at least two traction components 4, which, guided by the guide components 3 at both ends of the support base 1, lift the ground wire 20, preventing skewness and twisting of the ground wire 20 due to unidirectional traction. The detachable connection between the support base 1 and the ground wire bracket 10 allows for quick installation and stable fixation of the device, significantly simplifying the operation process, improving work efficiency, and reducing safety risks associated with working at heights.

[0024] The tightening device 2 is located at the upper middle position of the support base 1, and at least two guide components 3 are fixed to the left and right edges of the support base 1, respectively. Taking two traction components 4 as an example, there are a first traction component and a second traction component. The first and second traction components are connected to the rotating body of the tightening device 2 at their beginning ends, and their end ends pass through the guide components 3 on the corresponding sides and hang down to connect to the ground wire 20 to be lifted. A preset vertical distance is formed between the top of the elevating structure 12 and the bottom surface of the support base 1. This vertical distance is greater than the outer diameter of the housing of the tightening device 2, thereby providing a tightening stroke for the tightening operation.

[0025] In one specific embodiment, the support base 1 is detachably connected to the ground wire bracket 10. For example... Figure 5 As shown, the support base 1 includes a base body 11, and the ground wire lifting device includes a clamp 6. The support base 1 and the ground wire bracket 10 are locked together by the clamp 6 to achieve rigid fixation. Specifically, one end of the clamp 6 is detachably connected to the base body 11 and fastened with bolts. The ground wire bracket 10 has a lifting hole, and the other end of the clamp 6 passes through the lifting hole with a bolt to fix the support base 1 to the ground wire bracket 10. When the bolts are tightened, the clamp 6 and the base body 11 form a clamping force on the ground wire bracket 10, making the device stable and not shaking during operation. This connection method, through the cooperation of the lifting hole and the clamp 6, achieves precise alignment of the force points between the device and the ground wire bracket 10, and is suitable for working conditions where the ground wire bracket 10 has a lifting hole.

[0026] Furthermore, based on the aforementioned clamp locking and fixing structure, a strip-shaped hole is provided on the base body 11, extending vertically. Bolts used to connect the clamp 6 and the base body 11 pass through this strip-shaped hole and are tightened. By adjusting the fixing position of the bolts within the strip-shaped hole, the relative position of the base body 11 with respect to the clamp 6 in the vertical direction is changed, thereby altering the installation height of the support base 1 relative to the ground wire bracket 10. When the bolt is fixed at the upper end of the strip-shaped hole, the overall installation height of the support base 1 decreases, and the preset lifting distance between the top of the elevating structure 12 and the bottom surface of the support base 1 decreases accordingly. When the bolt is fixed at the lower end of the strip-shaped hole, the overall installation height of the support base 1 increases, and the preset lifting distance increases accordingly. Therefore, operators can flexibly adjust the installation height of the support base 1 according to the clearance between the hanging point and the ground wire 20 in actual working conditions to adapt to different working distance requirements.

[0027] In one specific embodiment, the clamp 6 has an L-shaped structure and is installed on both sides of the bottom of the base body 11 in a split configuration. The support base 1 is placed on the top surface of the ground wire bracket 10, and the clamp 6 is fastened to the base body 11 by fasteners. In the L-shaped structure of the clamp 6, the vertical section fits against the side of the ground wire bracket 10, and the horizontal section fits against the bottom surface of the base body 11. When the fasteners are tightened, the clamp 6 tightens, forming a clamping force on the base body 11, thus connecting them as a whole. The horizontal section of the clamp 6 has a through hole, and the ground wire bracket 10 has a wire lifting hole. The bolt passes through the through hole and the wire lifting hole, exits from the other side, and is fastened by a nut.

[0028] The fasteners can be bolts, and at least two bolts are arranged side by side. The two bolts are arranged at intervals in the vertical direction to form a multi-point fixing structure, thereby restricting the rotation of the clamp 6 relative to the base body 11, avoiding shaking caused by single-point force during operation, and ensuring the overall stability of the device in the line lifting operation.

[0029] In one embodiment, the elevated structure 12 includes a crossbeam disposed at the top of the support base 1, and a tensioner 2 and a guide assembly 3 are respectively fixed to the crossbeam by bolts. The tensioner 2 is fixed at the middle position of the crossbeam, and the two guide assemblies 3 are respectively fixed at both ends of the crossbeam.

[0030] In one specific embodiment, the support base 1 straddles the ground wire bracket 10, and the lifting structure 12 extends upward from the top surface of the support base 1. The tensioner 2 is fixed to the top of the lifting structure 12. Thus, a vertical distance is formed between the top of the lifting structure 12 and the bottom surface of the support base 1. This distance is the preset lifting gap, denoted as H.

[0031] The preset lifting distance H is 1.5 to 2 times the outer diameter of the housing of the tensioner 2. For example, when the outer diameter of the housing of the tensioner 2 is 200 mm, the preset lifting distance H can be 300 mm to 400 mm.

[0032] The preset lifting distance H provides travel space for the rope winding operation of the tensioner 2. Specifically, the traction member 4 extends downward from the rotating body of the tensioner 2, is turned by the guide assembly 3, and then connects vertically downward to the ground wire 20. Each rotation of the tensioner 2 shortens the traction member 4 by the same amount, which is the height the ground wire 20 is raised. Because the tensioner 2 is supported at a high position by the elevating structure 12, the path of the traction member 4 from the rotating body to the guide assembly 3 is entirely within the space formed by the preset lifting distance H, and is not restricted by the narrow clearance between the ground wire support 10 and the ground wire 20.

[0033] In contrast, traditional lever hoists are directly suspended between the hanging point and the ground wire. Their body length (usually 300mm to 500mm) directly encroaches on the effective space between the hanging point and the ground wire. If the clearance between the hanging point and the ground wire is only 200mm, the body of the lever hoist exceeds this space, and the remaining stroke available for rope winding is zero or negative, making it impossible to complete effective tightening.

[0034] By adjusting the preset lifting distance H, the working position of the tensioner 2 is shifted from between the anchor point and the ground wire to above the anchor point, allowing the tensioner 2 to retract the rope entirely within an open space, unrestricted by the limited clearance between the anchor point and the ground wire. The lifting of the ground wire 20 is only limited by the shortening length of the traction member 4, and this shortening length is entirely within the travel space formed by the preset lifting distance H. Therefore, even when the clearance between the anchor point and the ground wire 20 is extremely small, the device of this embodiment can still lift the ground wire 20 to the target height in one go without repeatedly adjusting the anchor point position.

[0035] like Figure 3 As shown, in one specific embodiment of the rotating body, the rotating body includes a main shaft 21, on which are provided staggered first holes 211 and second holes 212. One traction member 4 has its head passing through the first hole 211 and fixed thereon, and its tail passing through a guide assembly 3 at one end and hanging downwards. The head of another traction member 4 passes through the second hole 212 and is fixed to the main shaft 21 in the opposite direction, and its tail passes through the guide assembly 3 at the other end and hangs downwards.

[0036] In this context, "fixed in opposite directions" means that the head end of one traction member 4 passes through the first hole 211 in a first insertion direction and is then fixed, while the head end of the other traction member 4 passes through the second hole 212 in a second insertion direction opposite to the first insertion direction and is then fixed. For example, if the head end of the first traction member passes through the first hole 211 from above the main shaft 21 and is fixed, then the head end of the second traction member passes through the second hole 212 from below the main shaft 21 and is fixed. Thus, when the main shaft 21 rotates in the same direction, the first traction member winds around the main shaft 21 in a first rotation direction, and the second traction member winds around the main shaft 21 in a second rotation direction opposite to the first rotation direction. The two traction members 4 are shortened synchronously and equally, achieving bidirectional synchronous traction.

[0037] like Figure 4 As shown, in another specific embodiment of the rotating body, the rotating body includes a traction wheel 22. The traction wheel 22 has a protruding first winding area 221 and a second winding area 222 along its circumference. At least two traction members 4 are connected to hooks 5 at their ends. One traction member 4 is wound around the first winding area 221 in a first direction of rotation, and its end passes through the guide component 3 at one end and is connected to the first connection point of the ground wire 20 to be lifted via the hook 5. The other traction member 4 is wound around the second winding area 222 in a second direction of rotation opposite to the first direction of rotation, and its end passes through the guide component 3 at the other end and is connected to the second connection point of the ground wire 20 to be lifted via the hook 5. When the traction wheel 22 rotates, the first and second traction members are shortened synchronously and equally, achieving bidirectional synchronous and stable traction.

[0038] Furthermore, the traction wheel 22 includes a double-groove pulley. The first winding area 221 is a first annular groove formed on the outer edge of the double-groove pulley, and the second winding area 222 is a second annular groove formed on the outer edge of the double-groove pulley. The first and second annular grooves are arranged side by side along the axial direction. The first end of one traction member 4 is fixed to the bottom of the first annular groove and wound in the first annular groove in a first direction of rotation. The first end of the other traction member 4 is fixed to the bottom of the second annular groove and wound in the second annular groove in a second direction of rotation.

[0039] Through the rotating body, the tensioner 2 can achieve bidirectional synchronous traction. When the operator rotates the rotating body, the left and right traction parts 4 are shortened synchronously and equally, generating equal traction force. The ground wire 20 is subjected to balanced force, and the lifting process is smooth.

[0040] In this configuration, the first and second rotation directions are opposite. Specifically, with the axis of the traction wheel 22 as a reference, the first traction member is wound clockwise around the outer circumference of the first winding area 221, and the second traction member is wound counterclockwise around the outer circumference of the second winding area 222. Alternatively, the first traction member is wound counterclockwise, and the second traction member is wound clockwise. Taking the clockwise winding of the first traction member and the counterclockwise winding of the second traction member as an example, the first end of the first traction member is fixed to the first winding area 221, and its rope is wound clockwise around the outer circumference of the first winding area 221. Its end is led out from below or above the first winding area 221 and passes through the guide component 3 at one end. The first end of the second traction member is fixed to the second winding area 222, and its rope is wound counterclockwise around the outer circumference of the second winding area 222. Its end is led out from below or above the second winding area 222 and passes through the guide component 3 at the other end. When the operator rotates handle 24 in one direction, traction wheel 22 rotates accordingly. The first winding zone 221 continues to wind the first traction member clockwise, while the second winding zone 222 continues to wind the second traction member counterclockwise. Thus, under the same rotational drive, the two traction members 4 are shortened synchronously and equally in opposite winding directions, generating equal and opposite traction forces, ensuring balanced force on the ground wire 20, and achieving bidirectional synchronous and stable traction.

[0041] The tensioner 2 also includes a ratchet and pawl mechanism 23 and a handle 24. The ratchet and pawl mechanism 23 includes a ratchet and a pawl. The ratchet is coaxially and fixedly connected to the rotating body, and the pawl is hinged to the housing of the tensioner 2 and engages with the ratchet. The handle 24 is connected to the rotating body and is used to drive the rotating body to rotate. After traction stops, the ratchet and pawl mechanism 23 automatically remains locked to prevent the traction component 4 from retracting, ensuring that the ground wire 20 is stably maintained in the lifted position without springing back or loosening.

[0042] The guide assembly 3 includes a guide bracket and a pulley. The guide bracket is fixed to the support base 1, and the pulley is mounted inside the guide bracket via a pin. An annular groove is formed on the outer edge of the pulley, and the traction member 4 is embedded in the annular groove. The two side walls of the annular groove provide lateral restraint for the traction member 4, preventing it from detaching from the pulley. The guide assembly 3 smoothly converts the horizontal traction force output by the tensioner 2 into a vertical lifting force, while simultaneously reducing the frictional resistance of the traction member 4 at turning points through the pulley structure.

[0043] According to a second aspect of the embodiments of this application, a ground wire lifting method is provided, using the ground wire lifter of the above embodiments, the method comprising: Install the support base 1 on the ground wire bracket 10 so that a preset lifting distance is formed between the top of the elevated structure 12 and the bottom surface of the support base 1. At least two traction members 4 are respectively wound around the rotating body of the tensioner 2 and the corresponding guide assembly 3, and the ground wire 20 to be lifted is connected to the end of the traction member 4. The tensioner 2 drives at least two traction members 4 to move synchronously, causing the ground wire 20 to rise within the travel space formed by the preset lifting distance until the ground wire 20 is lifted to the target position.

[0044] Example This embodiment provides a grounding wire lifting device, including a support base 1, a tensioner 2, guide components 3, a traction component 4, and a clamp 6. The support base 1 includes a base body 11. The clamp 6 has an L-shaped structure and is separately installed on both sides of the bottom of the base body 11, and is fastened to the base body 11 by bolts. The top of the base body 11 is provided with a support structure 12, which is a crossbeam fixed to the top of the base body 11. The tensioner 2 is fixed to the middle position of the crossbeam by bolts, and two guide components 3 are respectively fixed to the left and right ends of the crossbeam by bolts.

[0045] The tensioner 2 includes a rotating body, which is a main shaft 21. The main shaft 21 has staggered first holes 211 and second holes 212. The first traction member's head passes through the first hole 211 and is fixed, and is wound around the main shaft 21 in a first direction of rotation. Its end passes through the left guide assembly 3 and hangs downward. The second traction member's head passes through the second hole 212 and is fixed to the main shaft 21 in the opposite direction to the first traction member. It is wound around the main shaft 21 in a second direction of rotation, and its end passes through the right guide assembly 3 and hangs downward. Both the first and second traction members are steel wire ropes, and both are connected to hooks 5 at their ends.

[0046] The tightener 2 also includes a ratchet and pawl mechanism 23 and a handle 24. The ratchet is coaxially and fixedly connected to the main shaft 21, the pawl is hinged to the housing of the tightener 2 and meshes with the ratchet, and one end of the handle 24 is fixedly connected to the main shaft 21.

[0047] In one embodiment, the guide component 3 is a trolley, which includes a guide bracket and a pulley. The guide bracket is fixed to the crossbeam by bolts, and the pulley is installed in the guide bracket by a pin. The outer edge of the pulley is provided with an annular groove, and the traction member 4 is embedded in the annular groove.

[0048] When using this ground wire lifting device, the operator first straddles the support base 1 on the ground wire bracket 10, ensuring that the base body 11 is in contact with the top surface of the ground wire bracket 10. Install the clamp 6 and tighten the bolts to create a clamping force between the clamp 6 and the support base 1 on the ground wire bracket 10, thus securing the device firmly. Confirm that the tensioner 2 and guide assembly 3 are in good condition and that the traction component 4 winds smoothly.

[0049] The hook 5 at the end of the first traction component is connected to the first connection point of the ground wire 20, and the hook 5 at the end of the second traction component is connected to the second connection point of the ground wire 20. The operating handle 24 rotates the main shaft 21, which simultaneously retracts the first and second traction components. The ground wire 20 rises smoothly within the travel space formed by the preset lifting distance between the top of the elevated structure 12 and the bottom surface of the support base 1. After reaching the lifting position, the handle 24 is stopped, and the ratchet and pawl mechanism 23 automatically locks the main shaft 21 to prevent the traction component 4 from retracting. The ground wire 20 remains stably in the lifted position for subsequent operations.

[0050] After the operation is completed, release the pawl, reverse the handle 24 to release the traction component 4, remove the hook 5 from the ground wire 20, loosen the bolts of the clamp 6, and remove the device. The whole process is simple to operate, does not require repeated adjustment of the tool position, and can effectively lift the ground wire 20 in one go even when the vertical clearance between the hanging point and the ground wire 20 is limited.

[0051] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0052] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely implementation methods of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A ground wire lifting device, characterized in that, include: The support base, tensioner, guide assembly, and traction component are provided. The support base is detachably connected to the grounding bracket and has a raised structure. At least two guide assemblies are respectively disposed at both ends of the support base. The tensioner is disposed on the support base and is located between the at least two guide assemblies. The tightener includes a rotating body, and at least two traction members are respectively wound around the rotating body and the corresponding guide assembly, and move synchronously under the drive of the rotating body; the ground wire to be lifted is connected to the traction member; The top of the elevated structure and the bottom surface of the support base have a preset lifting distance.

2. The ground wire lifting device according to claim 1, characterized in that, The rotating body includes a main shaft with staggered first and second holes. One of the traction components has its head end passing through the first hole and fixed, and its tail end passing through the guide assembly at one end and hanging down. The head end of the other traction component passes through the second hole and is fixed to the main shaft in the opposite direction, and its tail end passes through the guide assembly at the other end and hangs down.

3. The ground wire lifting device according to claim 1, characterized in that, The rotating body includes a traction wheel, which has a first winding area and a second winding area protruding along its circumference; at least two traction members are connected to hooks at their ends, one of the traction members is wound around the first winding area in a first direction of rotation, and its end passes through the guide assembly at one end to connect to the first connection point of the ground wire to be lifted; the other traction member is wound around the second winding area in a second direction of rotation, and its end passes through the guide assembly at the other end to connect to the second connection point of the ground wire to be lifted; wherein the first direction of rotation and the second direction of rotation are opposite.

4. The ground wire lifting device according to claim 3, characterized in that, The traction wheel includes a double-groove pulley. The first winding area is a first annular groove formed on the outer edge of the double-groove pulley, and the second winding area is a second annular groove formed on the outer edge of the double-groove pulley. The first annular groove and the second annular groove are arranged side by side along the axial direction.

5. The ground wire lifting device according to claim 1, characterized in that, The tightener also includes a ratchet and pawl mechanism and a handle; the ratchet and pawl mechanism includes a ratchet and a pawl, the ratchet is coaxially fixedly connected to the rotating body, and the pawl is hinged to the housing of the tightener and engages with the ratchet; the handle is connected to the rotating body and is used to drive the rotating body to rotate.

6. The ground wire lifting device according to claim 1, characterized in that, The guiding assembly includes a guide bracket and a pulley. The guide bracket is fixed on the support base, and the pulley is installed in the guide bracket by a pin. The outer edge of the pulley is provided with a third annular groove, and the traction member is embedded in the third annular groove.

7. The ground wire lifting device according to claim 1, characterized in that, It also includes a clamp, one end of which is detachably connected to the support base and fixed by fasteners; the grounding bracket is provided with a cable lifting hole, and the other end of the clamp passes through the cable lifting hole by a bolt and fixes the support base to the grounding bracket.

8. The ground wire lifting device according to claim 7, characterized in that, The support base includes a base body with a strip-shaped hole extending vertically. Fasteners pass through the strip-shaped hole to fix the support base to the grounding bracket. The vertical installation height of the support base relative to the grounding bracket can be changed by adjusting the fixing position of the fasteners within the strip-shaped hole.

9. The ground wire lifting device according to claim 1, characterized in that, The elevated structure includes a crossbeam, which is located at the top of the support base. The tensioner and the guide assembly are fixed to the crossbeam by bolts or welding.

10. A ground wire lifting method, using a ground wire lifter as described in any one of claims 1 to 9, characterized in that, The method includes: The support base is installed on the ground wire bracket, so that the top of the raised structure and the bottom surface of the support base form the preset lifting distance; At least two of the traction members are respectively wound around the rotating body of the tensioner and the corresponding guide assembly, and the ground wire to be lifted is connected to the end of the traction member; The tightener drives at least two of the traction members to move synchronously, causing the ground wire to rise within the travel space formed by the preset lifting interval until the ground wire is lifted to the target position.

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