Transformer lead mounting device and mounting method

Abstract

The invention discloses a transformer lead mounting device and method, and relates to the technical field of transformer lead connection, the transformer lead mounting device comprises a guide traction piece, the guide traction piece comprises a bracket and a rolling wheel, the rolling wheel is rotatably arranged on the opposite side walls of two vertical plates, and a supporting roller located on the lower side of the rolling wheel is rotatably arranged between the two vertical plates; the space between the rolling wheel and the supporting roller is a lead passing space; the side wall of the semi-major axis of the oval wheel is located in the vertical direction, the multiple protruding blocks move annularly along with the rolling wheel, the protruding blocks are pushed to be away from the radial side wall of the rolling wheel, the lead passing through the lead penetrating space is pressed downwards, static friction force is generated between the protruding blocks and the lead, and meanwhile the lead is bent and deformed. The device can assist a power constructor to pull a lead in one direction, once the lead is pulled and tensioned, the lead is prevented from sliding reversely and drooping downwards by utilizing static friction force, when the power constructor connects the lead with a wiring terminal, the power constructor does not need to consume large force to tension the lead, and potential safety hazards during installation are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer lead connection, in particular to a transformer lead installation device and an installation method. Background Art

[0002] Transformer lead installation is a crucial step in the transformer installation process. Its correctness and firmness are directly related to the transformer's operational safety and performance. Specifically, the transformer downconductor is a wire that is drawn down from the high-voltage wire on the transformer frame and then connected to the high-voltage side of the transformer. Similarly, the low-voltage downconductor is drawn from the low-voltage side of the transformer and connected to the low-voltage pole. Its primary function is to facilitate wiring and ensure that current can be smoothly transmitted from the high-voltage line to the transformer, or from the transformer to the low-voltage line.

[0003] Generally speaking, there are two main methods for downconducting transformer racks. One is direct downconducting, which is usually used when both poles on the transformer rack are straight poles; the other is the special-shaped T-connected downconducting method, which is used when the transformer rack pole serves as a terminal pole. Both of the above methods require the lead wire to be pulled to tighten and the wire ends to be stripped and connected to the terminal during the construction process. In actual power construction, the lead wire itself is heavy, and a temporary grounding wire is usually hung on the lead wire, making the lead wire heavier as a whole, resulting in a large tensile force on the lead wire. When using traditional methods to install the high-voltage lead wire of the equipment, the close cooperation of two workers is usually required: one worker needs to expend great effort to drag the heavy lead wire to the terminal block, while the other is responsible for tightening the screws to secure the lead wire during or after the process.

[0004] The heavy weight of the lead wires, coupled with the potential for temporary grounding wires, creates an additional burden. This immense strain can easily cause workers to lose their balance during the pulling process, potentially causing them to accidentally let go and be struck by the heavy wire, potentially injuring them. In this operating environment, workers also need to tension and strip the wires, further complicating the installation process. Summary of the Invention

[0005] The object of the present invention is to provide a transformer lead installation device and installation method to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a transformer lead installation device, comprising a guide traction member, the guide traction member comprising a bracket and a rolling wheel, the bottom wall of the bracket is rotatably provided with a door-shaped card seat, both sides of the bracket are bent upward to form vertical plates, the rolling wheel rotates on the opposite side walls of the two vertical plates, and the tangential direction of the rotation direction is consistent with the lead tensioning and pulling direction, a support roller located on the lower side of the rolling wheel is rotatably provided between the two vertical plates, and the space between the rolling wheel and the support roller is a space for the lead to pass through; A hollow cavity is provided in the rolling wheel, wherein a connecting rod extending to the hollow cavity is fixed to the side wall of one of the vertical plates, and an elliptical wheel is fixed to the end of the connecting rod, and the long semi-axis side wall of the elliptical wheel is located in the vertical direction, and a plurality of T-shaped sliders are slidably inserted on the radial side wall of the rolling wheel, one end of the T-shaped slider is located in the hollow cavity, and the other end extends outside the hollow cavity and is fixed with a protrusion, and the plurality of protrusions follow the rolling wheel to make a circular motion, and when the T-shaped slider is located at one end of the hollow cavity and rotates through the long semi-axis side wall of the elliptical wheel, the T-shaped slider slides to the side away from the center of the hollow cavity, thereby pushing the protrusion away from the radial side wall of the rolling wheel, pressing down the lead passing through the space, generating static friction between the protrusion and the lead, and at the same time the lead is bent and deformed.

[0007] In a further embodiment, two support rollers are provided, and a buffer gap is left between the two support rollers. When the bump presses down the lead, the portion of the lead located between the two support rollers bends downward and deforms.

[0008] In a further embodiment, a gear disc and a rotating rod are rotatably provided on the outer wall of a vertical plate on which a connecting rod is not installed, and the bottom wall of the end of the rotating rod is provided with helical teeth, and the axial side wall of the gear disc is connected with a pin shaft that passes through the corresponding vertical plate and is fixedly connected to the axial side wall of the rolling wheel, and the helical teeth are matched with the tooth gap on the gear disc and clamped.

[0009] In a further embodiment, a magnet block is embedded in the elliptical wheel, a roller is rotatably provided at one end of the T-shaped slider located in the hollow cavity, the pipeline is in rolling contact with the outer wall of the elliptical wheel, and the roller is an iron wheel.

[0010] In a further embodiment, the bracket further comprises a rotating sleeve rotatably arranged on the side thereof, wherein the axial space of the rotating sleeve is used for the lead wire to pass through; T-shaped columns are rotatably provided on the side walls of the two vertical plates and the bracket located in the same vertical plane. An enlarged end is radially provided at one axial end of the rotating sleeve. An annular rotating groove is provided on the end side wall of the enlarged end. The ends of the three T-shaped columns are rotatably clamped in the annular rotating groove.

[0011] In a further embodiment, a knife hole is opened on the radial side wall of the rotating sleeve, and a blade is inserted into the knife hole along the radial direction of the rotating sleeve. The blade can be adjusted in the knife hole to change the direction of the blade edge or the blade back.

[0012] In a further embodiment, rectangular rotating blocks are rotatably provided on the relative side walls of the knife hole, and rectangular sliding grooves are opened on the relative outer side plates of the blade. Two rectangular sliders are respectively slidably engaged in the two rectangular sliding grooves. The rectangular sliding groove of the blade can slide along the outer wall of the rectangular slider to adjust the depth of the blade embedded in the rotating sleeve. At the same time, the rectangular sliding groove of the blade can be flipped with the rectangular slider as the rotation center to adjust the direction of the blade or the back of the blade.

[0013] In a further embodiment, a pressure handle is rotatably provided on the radial side wall of the rotating sleeve, an arc-shaped extension end is fixed on the side wall of the pressure handle, a spherical block is fixed at the end of the arc-shaped extension end, and a knife groove is provided on the bottom wall of the spherical block; When the blade is located in the rotating sleeve, the spherical block is used to press down the back of the blade, pushing the blade edge toward the center of the rotating sleeve; When the blade back is located in the rotating sleeve, the blade groove of the spherical block is used to press down and clamp the outer side of the blade, pushing the blade back toward the center of the rotating sleeve.

[0014] In a further embodiment, the blade edge and the back of the blade are both arc-shaped structures, the arc-shaped blade edge is used to cut the outer insulating rubber layer of the lead, and the arc-shaped back of the blade is used to surround the terminal housing to form a shrinking binding ring.

[0015] Preferably, the installation method of the transformer lead installation device described above includes the following steps: A1. First, clamp the gate-shaped holder onto the crossarm. The starting end of the lead wire passes horizontally through the lead wire passage space. The upper and lower surfaces of the lead wire's rubber insulation layer contact the bumps on the side walls of the rolling wheel and the upper side walls of the support roller, respectively. When the lead wire is pulled, the rolling wheel and support roller roll synchronously due to the friction of the lead wire's rubber insulation layer. Multiple bumps follow the rolling wheel in a circular motion. When the T-shaped slider located at one end of the hollow cavity rotates past the long semi-axis side wall of the elliptical wheel, the T-shaped slider slides away from the center of the hollow cavity, pushing the bumps away from the radial side wall of the rolling wheel. This presses down on the lead wire passing through the lead wire passage space, generating static friction between the bumps and the lead wire, and simultaneously bending and deforming the lead wire. A2. The rolling wheel rotates in one direction, and the tangential direction of the rotation direction is consistent with the tensioning and pulling direction of the lead. The static friction between the bump and the lead is used to prevent the lead from sliding in the opposite direction and loosening. A3. Push the blade along the knife groove toward the center of the rotating sleeve. At the same time, the rotating sleeve makes a circular motion, driving the blade to make a circular cutting motion, cutting the rubber insulation layer at the beginning of the lead wire. When the cutting is completed, remove the cut rubber insulation layer. A4. Turn the blade over in the knife hole and push the blade back toward the center of the rotating sleeve. At the same time, the rotating sleeve makes a circular motion, driving the blade back to perform a circular rolling action, rolling the connecting terminal shell into a circle of shrinking binding ring, which is tightly wrapped around the outer wall of the lead harness.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention can assist electric power construction workers in unidirectional pulling of the lead wire. The rolling wheel rotates unidirectionally, and the tangential direction of the rotation direction is consistent with the direction of lead wire tensioning and pulling. Once the lead wire is pulled and tensioned, the static friction force generated between the protrusion and the lead wire is used to prevent the lead wire from sliding in the opposite direction and drooping downward. When connecting the lead wire to the terminal block, the electric power construction workers do not need to expend much effort to tension the lead wire, thereby reducing safety hazards during installation and reducing construction difficulty. After traction and tensioning, the lead wire is prevented from being too heavy and detached, and then the lead wire end is ring-cut and the rubber insulation layer is peeled off. The lead wire is connected to the terminal block, and a circle of shrinking binding ring is formed by rolling on the terminal block housing, which is tightly wrapped on the outer wall of the lead wire harness. The terminal block is connected to the pre-installed position of the transformer with bolts to achieve lead installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure assembly of the present invention; Figure 2 This is a schematic diagram of the split structure of the main structure of the present invention; Figure 3 This is a schematic structural diagram of the guide traction member of the present invention; Figure 4 It is a schematic diagram of the partial structure of the guide traction member of the present invention; Figure 5 It is a schematic diagram of the rolling wheel and two supporting rollers of the present invention; Figure 6 This is a schematic diagram of the assembly structure of the elliptical wheel, the bump and the roller of the present invention; Figure 7 This is a schematic diagram of the assembly structure of the rotating sleeve, the pressing handle and the blade of the present invention; Figure 8 and Figure 9 They are all schematic diagrams of the rotating sleeve structure of the present invention; Figure 10 This is a schematic diagram of the partial structure of the pressure handle of the present invention; Figure 11 A schematic diagram of the blade of the present invention cutting an insulating layer; Figure 12 This is a schematic diagram of the blade back of the blade of the present invention rolling the outer wall of the terminal.

[0018] In the figure: 1. bracket; 11. door-type card seat; 12. gear plate; 13. rotating rod; 14. T-shaped column; 15. support roller; 2. rotating sleeve; 21. enlarged end; 22. pressure handle; 23. blade; 24. rectangular slider; 25. spherical block; 3. rolling wheel; 31. bump; 32. T-shaped slider; 33. roller; 34. elliptical wheel; 35. magnet block. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0020] Embodiment: This embodiment provides a transformer lead installation device, including a guide traction member, which includes a bracket 1 and a rolling wheel 3. The bottom wall of the bracket 1 is rotatably provided with a door-shaped card seat 11, and both sides of the bracket 1 are bent upward to form vertical plates. The rolling wheel 3 rotates on the opposite side walls of the two vertical plates, and the tangential direction of the rotation direction is consistent with the lead tensioning and traction direction. A support roller 15 located on the lower side of the rolling wheel 3 is rotatably provided between the two vertical plates, and the space between the rolling wheel 3 and the support roller 15 is the space for the lead to pass through; Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, there are two support rollers 15 , with a buffer gap left between the two support rollers 15 . When the protrusion 31 presses down on the lead wire, the portion of the lead wire between the two support rollers 15 bends downward and deforms.

[0021] Specifically, the design purpose of the above structure is to Figure 5 and Figure 6 As shown, a hollow cavity is provided in the rolling wheel 3, in which a connecting rod extending to the hollow cavity is fixed on the side wall of one of the vertical plates, and an elliptical wheel 34 is fixed on the end of the connecting rod, and the long semi-axis side wall of the elliptical wheel 34 is located in the vertical direction, and a plurality of T-shaped sliders 32 are slidably inserted on the radial side wall of the rolling wheel 3, one end of the T-shaped slider 32 is located in the hollow cavity, and the other end extends outside the hollow cavity and is fixed with a protrusion 31, and the plurality of protrusions 31 follow the rolling wheel 3 to make a circular motion, and when the T-shaped slider 32 is located at one end of the hollow cavity and rotates through the long semi-axis side wall of the elliptical wheel 34, the T-shaped slider 32 slides to the side away from the center of the hollow cavity, thereby pushing the protrusion 31 away from the radial side wall of the rolling wheel 3, pressing down the lead passing through the space, generating static friction between the protrusion 31 and the lead, and at the same time the lead is bent and deformed. At the same time, it should be noted that the bump 31 is made of fluororubber, which has strong anti-slip properties, strong hardness, and is not easy to deform. It is the best choice as a medium in contact with the lead rubber insulation layer.

[0022] Here, the lowermost protrusion 31 has a vertical gap from the upper sidewall of the support roller 15. Only when the T-shaped slider 32 slides radially along the roller 3 can the protrusion 31 be pushed further downward against the outer wall of the lead wire's rubber insulation layer. In other words, when the lead wire is pulled to tension, the roller 3 does not need to be rolled, so the protrusion 31 does not change position. Therefore, when the lead wire is pulled through the space between the lead wires, it does not come into contact with the protrusion 31, thus eliminating friction and reducing the physical effort of the power construction workers. Once the lead is pulled and tensioned, the rolling wheel 3 is rolled, and the protrusion 31 follows the rolling wheel 3 to perform a circular motion. When the T-shaped slider 32 is located at one end of the hollow cavity and rotates through the long semi-axis side wall of the elliptical wheel 34, the T-shaped slider 32 slides to the side away from the center of the hollow cavity, thereby pushing the protrusion 31 away from the radial side wall of the rolling wheel 3, pressing down the lead passing through the space, and generating a large static friction force between the protrusion 31 and the lead, thereby using the friction force to relieve the physical output of the staff during tensioning and pulling.

[0023] Of course, when pushing the protrusion 31 away from the radial side wall of the rolling wheel 3 and pressing down the lead passing through the space, it is necessary to control the rotation direction of the rolling wheel 3, that is, the rolling wheel 3 can only roll in one direction, so that the position of the protrusion 31 will not change, thereby being able to use the greater static friction force between the protrusion 31 and the lead to alleviate the physical output of the staff during tensioning and traction.

[0024] Specifically, a toothed disc 12 and a rotating rod 13 are rotatably mounted on the outer wall of a vertical plate where a connecting rod is not installed. The bottom wall of the end of the rotating rod 13 is provided with helical teeth. The axial side wall of the toothed disc 12 is connected to a pin that passes through the corresponding vertical plate and is fixedly connected to the axial side wall of the rolling wheel 3. The helical teeth are matched with the tooth gap on the toothed disc 12 for engagement. The engagement position of the helical teeth and the toothed disc 12 is shown in FIG. Figure 3 and Figure 4 , or refer to the structural design of the ratchet pawl, such as the Chinese invention patent with publication number CN117780814A, named an automatic opening and closing pawl ratchet, which records the ratchet pawl structure, and its working principle is the same as the design principle of the helical teeth and toothed disc 12. When the lead wire passes through the space and passes through the lead wire, Figure 3The rotating sleeve 2 is shown protruding, that is, the direction of protrusion from the rotating sleeve 2 is the pulling direction of the lead wire. Therefore, the position where the helical teeth and the toothed disc 12 are engaged is on the side opposite to the pulling direction. When the lead wire is pulled, the rotating rod 13 is flipped upward and lifted, and the helical teeth are disengaged from the toothed disc 12. This does not affect the rolling of the rolling wheel 3 to transmit the lead wire. Once the lead wire is stopped, the rotating rod 13 is rotated in the opposite direction, and the helical teeth are again engaged in the tooth gap of the toothed disc 12. This prevents the toothed disc 12 from rotating in the opposite direction with the rolling wheel 3. As long as the rolling wheel 3 does not rotate, the position of the protrusion 31 does not change, and the position where the protrusion 31 rolls on the lead wire rubber insulation layer does not change. In this way, the rolling force of the protrusion 31 rolling on the surface wall of the lead wire rubber insulation layer, that is, the static friction, can be increased, which can greatly prevent the lead wire from sliding in the opposite direction and loosening.

[0025] In this embodiment, further, Figure 6 As shown, a magnet block 35 is embedded in the elliptical wheel 34. A roller 33 is rotatably mounted on one end of the T-shaped slider 32 located within the hollow cavity. The pipeline rolls against the outer wall of the elliptical wheel 34. The roller 33 is an iron wheel. The magnet block 35 can attract the iron wheel in real time, thus making the roller 33 roll in real time against the outer wall of the elliptical wheel 34 without causing the bump 31 to jump significantly.

[0026] like Figure 1 、 Figure 7 and Figure 9 As shown, there is also disclosed a rotating sleeve 2 that is rotatably arranged on the side of the bracket 1. The axial space of the rotating sleeve 2 is used for the wire to pass through. At the same time, T-shaped columns 14 are rotatably arranged on the two vertical plates and the side walls of the bracket 1 located in the same vertical plane. An enlarged end 21 is radially provided at one axial end of the rotating sleeve 2. An annular rotating groove is provided on the end side wall of the enlarged end 21. The ends of the three T-shaped columns 14 are all rotatably engaged in the annular rotating groove. The cross-section of the annular rotating groove is a T-shaped structure, so the T-shaped columns 14 are stuck in the annular rotating groove and will not fall out. A thrust is applied to the rotating sleeve 2 along the tangential direction of the radial side wall of the rotating sleeve 2, and the annular rotating groove of the enlarged end 21 and the multiple T-shaped columns 14 rotate outward.

[0027] When the lead wire is pulled and tensioned, the rubber insulation layer at its end needs to be peeled off. For this purpose, a knife hole is opened on the radial side wall of the rotating sleeve 2. A blade 23 is inserted into the knife hole along the radial direction of the rotating sleeve 2. The blade 23 can be adjusted in the knife hole to change the direction of the blade or the back of the knife. Figure 7 and Figure 8 shown.

[0028] Specifically, if Figure 7 and Figure 8As shown, rectangular rotating blocks are rotatably provided on the relative side walls of the knife hole, and rectangular sliding grooves are provided on the relative outer plates of the blade 23. Two rectangular sliders 24 are respectively slidably engaged in the two rectangular sliding grooves. The rectangular sliding groove of the blade 23 can slide along the outer wall of the rectangular slider 24 to adjust the depth of the blade 23 embedded in the rotating sleeve 2. At the same time, the rectangular sliding groove of the blade 23 can be flipped with the rectangular slider 24 as the rotation center to adjust the direction of the blade or the back of the blade.

[0029] A pressure handle 22 is rotatably provided on the radial side wall of the rotating sleeve 2. An arc-shaped extension end is fixed to the side wall of the pressure handle 22. A spherical block 25 is fixed to the end of the arc-shaped extension end. A knife groove is provided on the bottom wall of the spherical block 25. Figure 10 and Figure 11 As shown, when the blade is located in the rotating sleeve 2, the spherical block 25 is used to press down the back of the blade 23, pushing the blade 23 toward the center of the rotating sleeve 2. At the same time, the rotating sleeve 2 makes a circular motion, driving the blade 23 to make a circular cutting motion, cutting the rubber insulation layer at the beginning of the lead wire. When the cutting is completed, the rubber insulation layer after cutting is removed. Figure 12 As shown, when the blade back is located in the rotating sleeve 2, the blade groove of the spherical block 25 is used to press down and clamp the outer side of the blade, pushing the blade back of the blade 23 toward the center of the rotating sleeve 2. At the same time, the rotating sleeve 2 makes a circular motion, driving the blade back to perform a circular rolling action, rolling the connecting terminal housing to form a circle of shrinking binding ring, which is tightly sleeved on the outer wall of the lead harness. In this way, the connecting terminal and the lead harness are tightly sleeved together, and the line connection can be achieved by using a bolt to pass through the plug hole of the connecting terminal and connect it to the transformer connection.

[0030] Furthermore, as shown in the figure, the blade and the back of the blade 23 are both arc-shaped structures. The blade with the arc-shaped structure can fit the surface wall of the rubber insulation layer of the lead wire and is used to cut the outer insulating rubber layer of the lead wire. The back of the blade with the arc-shaped structure is used to surround the terminal housing to form a shrinking binding ring, which is tightly fitted on the outer wall of the lead wire harness. In this way, the connecting terminal and the lead wire harness are tightly fitted together.

[0031] In summary, the above structure can assist electric power construction personnel in unidirectional pulling of the lead wire. The rolling wheel 3 rotates unidirectionally, and the tangential direction of the rotation direction is consistent with the direction of lead wire tensioning and pulling. Once the lead wire is pulled and tensioned, the static friction force generated between the protrusion 31 and the lead wire is used to prevent the lead wire from sliding in the opposite direction and drooping downward. When connecting the lead wire to the terminal, the electric power construction personnel do not need to spend a lot of effort to tension the lead wire, which reduces the safety hazard during installation and reduces the difficulty of construction. The overall structure can prevent loosening after traction and tensioning, and prevent the lead wire from being too heavy and detaching. The end of the lead wire is then circumcised and the rubber insulation layer is peeled off. After the lead wire is connected to the terminal, a circle of shrinking binding ring is formed on the terminal housing and tightly fitted on the outer wall of the lead wire harness. The terminal is connected to the pre-installed position of the transformer with bolts to achieve lead installation.

[0032] The present invention also discloses a method for installing a transformer lead installation device, comprising the following steps: A1. First, clamp the door-shaped card holder 11 on the crossarm, and the starting end of the lead wire passes horizontally through the lead wire passage space. The upper and lower surfaces of the rubber insulation layer of the lead wire contact the protrusions 31 on the side walls of the rolling wheel 3 and the upper side walls of the support roller 15 respectively. When the lead wire is pulled, the rolling wheel 3 and the support roller 15 roll synchronously due to the friction of the rubber insulation layer of the lead wire. The multiple protrusions 31 follow the rolling wheel 3 in a circular motion. When the T-shaped slider 32 at one end of the hollow cavity rotates and passes the long semi-axis side wall of the elliptical wheel 34, the T-shaped slider 32 slides to the side away from the center of the hollow cavity, thereby pushing the protrusions 31 away from the radial side wall of the rolling wheel 3, pressing down on the lead wire passing through the lead wire passage space, generating static friction between the protrusions 31 and the lead wire, and at the same time the lead wire bends and deforms; A2. The rolling wheel 3 rotates unidirectionally, and the tangential direction of the rotation direction is consistent with the lead tensioning and pulling direction. The static friction force generated between the protrusion 31 and the lead prevents the lead from sliding in the opposite direction and loosening. In this way, the lead can only be pulled and tensioned in one direction within the space where the lead passes. After loosening, the static friction force prevents the lead from sliding in the opposite direction and drooping. Once the lead is pulled and tensioned, the power construction worker can free his hands to connect the terminal blocks later. A3. Push the blade 23 along the knife groove toward the center of the rotating sleeve 2. At the same time, the rotating sleeve 2 makes a circular motion, driving the blade 23 to make a circular cutting motion, cutting the rubber insulation layer at the starting end of the lead wire. When the cutting is completed, remove the cut rubber insulation layer. A4. Flip the blade 23 in the knife hole, push the knife back toward the center of the rotating sleeve 2, and at the same time, the rotating sleeve 2 makes a circular motion, driving the knife back to perform a circular rolling action, rolling the connecting terminal housing to form a circle of shrinking binding ring, tightly sleeved on the outer wall of the lead harness. In this way, the connecting terminal and the lead harness are tightly sleeved together, and the line connection can be achieved by passing the bolt through the plug hole of the connecting terminal and connecting it to the transformer connection.

[0033] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A transformer lead installation device, characterized in that: include: A guide traction member, comprising a bracket (1) and a rolling wheel (3), wherein a door-shaped card seat (11) is rotatably provided on the bottom wall of the bracket (1), both sides of the bracket (1) are bent upward to form vertical plates, the rolling wheel (3) rotates on the opposite side walls of the two vertical plates, a support roller (15) located on the lower side of the rolling wheel (3) is rotatably provided between the two vertical plates, and a space between the rolling wheel (3) and the support roller (15) is a space for the lead wire to pass through; The rolling wheel (3) is provided with a hollow cavity, wherein a connecting rod extending to the hollow cavity is fixed on one side wall of a vertical plate, and an elliptical wheel (34) is fixed on the end of the connecting rod, the long semi-axis side wall of the elliptical wheel (34) is located in the vertical direction, and a plurality of T-shaped sliders (32) are slidably inserted on the radial side wall of the rolling wheel (3), one end of the T-shaped slider (32) is located in the hollow cavity, and the other end extends outside the hollow cavity and is fixed with a protrusion (31), and the plurality of protrusions (31) follow the rolling wheel (3) to make a circular motion, and when the end of the T-shaped slider (32) located in the hollow cavity rotates and passes through the long semi-axis side wall of the elliptical wheel (34), the T-shaped slider (32) slides to the side away from the center of the hollow cavity, thereby pushing the protrusion (31) away from the radial side wall of the rolling wheel (3), pressing the lead passing through the space, generating static friction between the protrusion (31) and the lead, and at the same time the lead is bent and deformed.

2. The transformer lead installation device according to claim 1, characterized in that: Two support rollers (15) are provided, and a buffer gap is left between the two support rollers (15). When the protrusion (31) presses the lead wire downward, the portion of the lead wire located between the two support rollers (15) bends downward and deforms.

3. The transformer lead installation device according to claim 1, characterized in that: A toothed disc (12) and a rotating rod (13) are rotatably provided on the outer wall of a vertical plate on which a connecting rod is not installed. The bottom wall of the end of the rotating rod (13) is provided with helical teeth. The axial side wall of the toothed disc (12) is connected to a pin shaft that passes through the corresponding vertical plate and is fixedly connected to the axial side wall of the rolling wheel (3). The helical teeth are matched with the tooth gap on the toothed disc (12) and are clamped.

4. The transformer lead installation device according to claim 1, characterized in that: The elliptical wheel (34) is embedded with a magnet block (35), and one end of the T-shaped slider (32) located in the hollow cavity is rotatably provided with a roller (33), the pipeline is in rolling contact with the outer wall of the elliptical wheel (34), and the roller (33) is an iron wheel.

5. The transformer lead installation device according to claim 1, characterized in that: It also includes a rotating sleeve (2) rotatably arranged on the side of the bracket (1), and the axial space of the rotating sleeve (2) is used for the lead wire to pass through; T-shaped columns (14) are rotatably provided on the side walls of the two vertical plates and the bracket (1) located in the same vertical plane. An enlarged end (21) is radially provided at one axial end of the rotating sleeve (2). An annular rotating slot is provided on the side wall of the end of the enlarged end (21). The ends of the three T-shaped columns (14) are rotatably engaged in the annular rotating slot.

6. The transformer lead installation device according to claim 5, characterized in that: A knife hole is provided on the radial side wall of the rotating sleeve (2), and a blade (23) is inserted into the knife hole along the radial direction of the rotating sleeve (2). The blade (23) can be adjusted in the knife hole to change the direction of the blade edge or the blade back.

7. The transformer lead installation device according to claim 6, characterized in that: Rectangular rotating blocks are rotatably provided on the opposite side walls of the knife hole, and rectangular sliding grooves are provided on the opposite outer side plates of the blade (23). Two rectangular sliders (24) are respectively slidably engaged in the two rectangular sliding grooves. The rectangular sliding groove of the blade (23) can slide along the outer wall of the rectangular slider (24) to adjust the depth of the blade (23) embedded in the rotating sleeve (2). At the same time, the rectangular sliding groove of the blade (23) can be flipped with the rectangular slider (24) as the rotation center to adjust the direction of the blade or the back of the blade.

8. The transformer lead installation device according to claim 7, characterized in that: A pressure handle (22) is rotatably provided on the radial side wall of the rotating sleeve (2), an arc-shaped extension end is fixed on the side wall of the pressure handle (22), a spherical block (25) is fixed at the end of the arc-shaped extension end, and a knife groove is provided on the bottom wall of the spherical block (25); When the blade is located in the rotating sleeve (2), the spherical block (25) is used to press down the back of the blade (23) to push the blade (23) toward the center of the rotating sleeve (2); When the back of the blade is located in the rotating sleeve (2), the blade groove of the spherical block (25) is used to press down and clamp the outer side of the blade, pushing the back of the blade (23) toward the center of the rotating sleeve (2).

9. The transformer lead installation device according to claim 7, characterized in that: The blade (23) has an edge and a back of a blade in an arc shape. The edge of the arc shape is used for cutting the outer insulating rubber layer of the lead wire, and the back of the arc shape is used for surrounding the terminal housing to form a shrinking binding ring.

10. A method for installing a transformer lead installation device, using the transformer lead installation device according to any one of claims 1 to 9, characterized in that: The steps include: A1. First, the door-shaped holder (11) is clamped on the cross arm, and the starting end of the lead passes horizontally through the lead passing space. The upper and lower surfaces of the rubber insulation layer of the lead contact the protrusion (31) on the side wall of the rolling wheel (3) and the upper side wall of the support roller (15) respectively. When the lead is pulled, the rolling wheel (3) and the support roller (15) roll synchronously due to the friction of the rubber insulation layer of the lead. The multiple protrusions (31) follow the rolling wheel (3) to make a circular motion. When the T-shaped slider (32) at one end of the hollow cavity rotates through the long semi-axis side wall of the elliptical wheel (34), the T-shaped slider (32) slides to the side away from the center of the hollow cavity, thereby pushing the protrusion (31) away from the radial side wall of the rolling wheel (3), pressing down the lead passing through the lead passing space, generating static friction between the protrusion (31) and the lead, and at the same time the lead is bent and deformed; A2, the rolling wheel (3) rotates in one direction, and the tangential direction of the rotation direction is consistent with the tensioning and pulling direction of the lead wire, and the static friction force generated between the protrusion (31) and the lead wire is used to prevent the lead wire from sliding in the opposite direction and loosening; A3, pushing the blade of the blade (23) toward the center of the rotating sleeve (2) along the knife groove, while the rotating sleeve (2) makes a circular motion, driving the blade of the blade (23) to make a circular cutting motion, cutting the rubber insulation layer at the beginning of the lead wire, and pulling out the rubber insulation layer after the circular cutting; A4. Turn the blade (23) in the knife hole, push the back of the knife toward the center of the rotating sleeve (2), and at the same time, the rotating sleeve (2) makes a circular motion, driving the back of the knife to make a circular rolling action, rolling the connecting terminal shell to form a circle of shrinking binding ring, which is tightly wrapped on the outer wall of the lead wire harness.

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