CN117613634A - A cold-pressed connection device for tap changer leads - Google Patents

Abstract

The utility model discloses a cold-pressing connection device for tapping switch leads, which relates to the technical field of tapping switch lead connection and comprises a supporting component, a cutting component and a cold-pressing component, wherein the supporting component comprises a top seat and a base, the top seat and the base are respectively provided with a lead groove and a first through groove, the top seat is provided with a second through groove and a third through groove, the base is provided with a fourth through groove and a cold-pressing groove, the second through groove is positioned above the fourth through groove, and the third through groove is positioned above the cold-pressing groove; through driving first slider, second slider and cold pressing head removal, cut the insulating layer on the lead to drive the cutter and move down, cut off the part that is close to the port of lead wire, repair the lead wire port, be convenient for lead wire and copper pipe are connected, and when avoiding artifical manual cold pressing simultaneously, the strength size is different when different people press-joint, is favorable to improving cold pressing quality, and it is more convenient to cold press the lead wire of split joint switch and connect.

Description

A cold-pressed connection device for tap changer leads

Technical field

The invention relates to the technical field of tap-changer lead connection, and in particular to a tap-changer lead cold-press connection device.

Background technique

Currently on the market, the connection between the tubular contacts and the leads of disk or strip tap changers uses manual crimping pliers to crimp the switch and tap leads. This operation method is relatively primitive and requires a lot of work during the operation. 2 to 3 people perform coordinated operations. During the crimping process, different people use different forces when crimping. It is impossible to guarantee whether the crimping is reliable. If the force is small, there will be no compression; if the force is large, the tap lead will be pressed. If worn, product quality cannot be guaranteed.

In related technology, the utility model with application number 201521036725.2 discloses a cold pressing device for switch tap leads of a distribution transformer, which clamps the side of the switch copper tube between the upper pressure joint and the lower pressure joint; the pump head of the hydraulic system Located on the lead crimping table, the pump head of the hydraulic system is in contact with the bottom of the other side of the lower pressing piece to complete the cold-pressed connection. In order to ensure the contact between the lead and the copper tube, the port of the lead needs to be trimmed, and then Cut off a part of the insulation layer. In the related art, when performing cold-pressed connection of the leads, it is necessary to manually cut off the insulation layer of the leads and trim the ports of the leads, which is not convenient to use.

Contents of the invention

The technical problem to be solved by the present invention is that in the related art, when cold-pressing the leads, it is necessary to manually cut off the insulation layer of the leads and trim the ports of the leads, which is not convenient enough to use.

In order to solve the above technical problems, the present invention provides the following technical solution: a cold-pressed connection device for tap changer leads, including a support component, a cutting component and a cold-pressure component. The support component includes a top base and a base. The top base and The base is provided with lead grooves and first through grooves respectively, the top base is provided with second through grooves and third through grooves, the base is provided with fourth through grooves and cold pressing grooves, and the second through grooves are located above the fourth through grooves. , the third through groove is located above the cold pressing groove; the cutting assembly includes a first slide block, an arc-shaped knife, a second slide block and a cutting knife. The first slide block and the arc-shaped knife are provided in two groups and are symmetrical It is set that the first slider is slidingly connected to the inner wall of the first through-slot, the second slider is slidingly connected to the inner wall of the second through-slot, and the bottom of the second slider is fixedly connected to the cutter; the cold-pressing assembly includes a cold-pressing head, and the cold-pressing The head is slidably connected to the inner wall of the third channel.

As a preferred solution of the cold-pressed connection device for tap changer leads of the present invention, a drop chute is provided on the base.

As a preferred solution of the tap changer lead cold-pressed connection device of the present invention, the bottom of the cutter is inclined.

As a preferred solution of the tap-changer lead cold-pressed connection device of the present invention, a fifth through-slot is provided on the base, and the inner wall of the fifth through-slot is slidably connected to a limiting block.

As a preferred solution of the tap-changer lead cold-pressed connection device of the present invention, the support assembly further includes a fixing rod, and two fixing rods are provided to fixedly connect the top base and both sides of the base respectively.

As a preferred solution of the tap changer lead cold-pressed connection device of the present invention, the support assembly further includes a first shell and a second shell, and the first shell is fixedly connected to the upper surface of the top base, The second shell is fixedly connected to the lower surface of the base.

As a preferred solution of the cold-pressed connection device for tap changer leads of the present invention, a movable door is hingedly connected to the second housing.

As a preferred solution of the tap changer lead cold pressing connection device of the present invention, it also includes a driving assembly, and the driving assembly includes a first telescopic rod, a second telescopic rod, a third telescopic rod, and a fourth telescopic rod. and a fifth telescopic rod. One end of the first telescopic rod is fixedly connected to the inner wall of the first housing. The other end of the first telescopic rod is fixedly connected to the first slider on the top base. One end of the second telescopic rod is fixedly connected to the inner wall of the second housing. , the other end of the second telescopic rod is fixedly connected to the first slider on the base, one end of the third telescopic rod is fixedly connected to the inner wall of the first housing, the other end of the third telescopic rod is fixedly connected to the second slider, and one end of the fourth telescopic rod is fixedly connected The inner wall of the first housing, the other end of the fourth telescopic rod is fixedly connected to the cold press head, one end of the fifth telescopic rod is fixedly connected to the inner wall of the second housing, and the other end of the fifth telescopic rod is fixedly connected to the limiting block.

As a preferred solution of the tap changer lead cold-pressed connection device of the present invention, the driving assembly further includes a control part, and the control part includes a first connecting pipe, a second connecting pipe, a third connecting pipe, The fourth connecting pipe, the fifth connecting pipe, the control tube and the movable rod. One end of the control tube is fixedly connected to one end of the first connecting pipe, the second connecting pipe, the third connecting pipe and the fifth connecting pipe respectively. The other end of the first connecting pipe One end is fixedly connected to the first telescopic rod, the other end of the second connecting pipe is fixedly connected to the second telescopic rod, the other end of the third connecting pipe is fixedly connected to the third telescopic rod, the other end of the fifth connecting pipe is fixedly connected to the fifth telescopic rod, and the control tube is fixedly connected to the first telescopic rod. One end of the fourth connecting pipe is fixedly connected to one end of the fourth connecting pipe, the other end of the fourth connecting pipe is fixedly connected to the fourth telescopic rod, and the inner wall of the control tube is slidably connected to the movable rod.

As a preferred solution of the tap changer lead cold-pressed connection device of the present invention, the control cylinder is provided with a sixth through slot, the movable rod is fixedly connected to the driving block, and the driving block is slidingly connected to the inner wall of the sixth through slot, The driving block is threadedly connected to the screw rod, and one end of the screw rod is fixedly connected to the motor.

Beneficial effects of the present invention: The present invention cuts the insulation layer on the lead by driving the first slider, the second slider and the cold crimp head to move, and drives the cutter to move downward to cut off the part of the lead close to the port, and The lead port is trimmed to facilitate the connection between the lead and the copper tube. At the same time, it avoids the different force of different people during manual cold pressing, which is beneficial to improving the quality of cold pressing and making the cold pressing connection of the tap changer lead more convenient. .

Description of drawings

Figure 1 is a schematic diagram of the overall structure in an embodiment of the present disclosure.

Figure 2 is a schematic structural diagram of the top base and the base in the embodiment of the present disclosure.

Figure 3 is a cross-sectional view of the top seat and the base in an embodiment of the present disclosure.

Figure 4 is a cross-sectional view of the first housing and the second housing in the embodiment of the present disclosure.

Figure 5 is a schematic diagram of the internal structures of the first housing and the second housing in the embodiment of the present disclosure.

Figure 6 is a schematic structural diagram of a control cylinder in an embodiment of the present disclosure.

Figure 7 is a cross-sectional view of the control cylinder in the embodiment of the present disclosure.

Reference signs: support component 1, top base 11, lead slot 111, first slot 112, second slot 113, third slot 114, base 12, fourth slot 121, cold pressing slot 122, blanking Slot 123, fifth through slot 124, limit block 125, fixed rod 13, first housing 14, second housing 15, movable door 151, cutting assembly 2, first slider 21, arc-shaped knife 22, Two slide blocks 23, cutter 24, cold pressing assembly 3, cold pressing head 31, driving assembly 4, first telescopic rod 41, second telescopic rod 42, third telescopic rod 43, fourth telescopic rod 44, fifth telescopic rod Rod 45, control piece 46, first connecting pipe 461, second connecting pipe 462, third connecting pipe 463, fourth connecting pipe 464, fifth connecting pipe 465, control tube 466, sixth channel 4661, movable lever 467 , drive block 47, screw rod 48, motor 49.

Detailed ways

In order to make the above objects, features and advantages of the present invention more obvious and understandable, the specific implementation modes of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

Referring to Figures 1-3, this embodiment provides a cold-pressed connection device for tap changer leads, including a support component 1, a cutting component 2, and a cold-pressure component 3. The support component 1 includes a top base 11 and a base 12, The top base 11 and the base 12 are respectively provided with lead slots 111 and first through slots 112. The top base 11 is provided with second through slots 113 and third through slots 114, and the base 12 is provided with fourth through slots 121 and 112. The cold pressing groove 122, the second through groove 113 is located above the fourth through groove 121, and the third through groove 114 is located above the cold pressing groove 122.

Preferably in this embodiment, the lead wires and copper tubes can be put into the lead wire grooves 111, and the lead wires and copper tubes can be guided by the lead wires 111 to avoid lateral deviation of the lead wires and copper tubes.

The cutting assembly 2 includes a first slide block 21, an arc-shaped knife 22, a second slide block 23 and a cutting knife 24. The first slide block 21 and the arc-shaped knife 22 are provided in two groups and are arranged symmetrically. The slider 21 is slidably connected to the inner wall of the first through-slot 112 , the second slider 23 is slidably connected to the inner wall of the second through-slot 113 , and the bottom of the second slider 23 is fixedly connected to the cutter 24 .

Preferably in this embodiment, the first slider 21 can slide on the inner wall of the first through-slot 112. When the first slider 21 slides, it can drive the arc-shaped knife 22 to move. When the first through-slot on the top base 11 and the base 12 When the first sliders 21 on the inner wall of 112 are close to each other, the two first sliders 21 drive the arc-shaped knives 22 to be close to each other, which can cut the insulation layer on the lead, and the second slider 23 can slide on the inner wall of the second through-slot 113 , the second slider 23 slides downward, which can drive the cutter 24 to move downward, cut off the part of the lead close to the port, and trim the lead port to facilitate the connection of the lead and the copper tube. The fourth through slot 121 facilitates the cutting knife 24 to fall when the second slide block 23 slides downward, thereby preventing the cutter 24 from hitting the base 12 and causing damage to the cutter 24 .

The cold pressing assembly 3 includes a cold pressing head 31 , and the cold pressing head 31 is slidably connected to the inner wall of the third channel 114 .

Preferably in this embodiment, the cold pressing head 31 can slide on the inner wall of the third channel 114, and a groove is provided at the bottom of the cold pressing head 31 to prevent the copper pipe from rolling during cold pressing. The cold pressing head 31 moves downward to squeeze the copper tube, and cooperates with the cold pressing tank 122 to complete the cold pressing connection of the tap changer lead. The operation is simple, and a hydraulic cylinder can be used to drive the first slider 21, the second slider 23 and the cold press. The pressure head 31 moves to cut the insulation layer on the lead, and drives the cutter 24 to move downward, cutting off the part of the lead close to the port, and trimming the lead port to facilitate the connection between the lead and the copper tube, while avoiding manual cold pressing. Different people have different strength when crimping, which is beneficial to improving the quality of cold pressing.

Example 2

Referring to Figures 1 to 7, this embodiment is based on the previous embodiment, and is different from the previous embodiment.

Referring to FIG. 3 , a blanking chute 123 is provided on the base 12 .

Preferably in this embodiment, the part of the lead close to the port after cutting can fall from the blanking chute 123 to remove waste materials.

Referring to Figure 3, the bottom of the cutter 24 is inclined.

Preferably in this embodiment, it is convenient to cut the lead wire when the cutter 24 moves downward.

Referring to FIG. 3 , the base 12 is provided with a fifth through slot 124 , and the inner wall of the fifth through slot 124 is slidably connected to the limiting block 125 .

Preferably in this embodiment, the limiting block 125 can slide on the inner wall of the fifth through groove 124 .

Referring to Figure 4, the support assembly 1 also includes a fixed rod 13. There are two fixed rods 13, which are fixedly connected to both sides of the top base 11 and the base 12 respectively.

Preferably in this embodiment, the fixing rod 13 can fix the positions of the top base 11 and the base 12 .

Referring to FIG. 4 , the support assembly 1 further includes a first housing 14 and a second housing 15 . The first housing 14 is fixedly connected to the upper surface of the top base 11 , and the second housing 15 is fixedly connected to the lower surface of the base 12 .

Preferably in this embodiment, the outer walls of the first housing 14 and the second housing 15 are fixedly connected to the fixing rod 13, which is beneficial to improving the structural strength.

Referring to FIG. 1 , a movable door 151 is hingedly connected to the second housing 15 .

Preferably in this embodiment, the part of the lead close to the port after cutting can fall from the blanking chute 123 and fall inside the second housing 15 for collection. The inside of the second housing 15 can be taken out by opening the movable door 151. Collect the portion of the cut lead near the port.

Referring to FIG. 4 , a driving assembly 4 is also included. The driving assembly 4 includes a first telescopic rod 41 , a second telescopic rod 42 , a third telescopic rod 43 , a fourth telescopic rod 44 and a fifth telescopic rod 45 . One end of the telescopic rod 41 is fixedly connected to the inner wall of the first housing 14. The other end of the first telescopic rod 41 is fixedly connected to the first slider 21 on the top base 11. One end of the second telescopic rod 42 is fixedly connected to the inner wall of the second housing 15. The other end of the telescopic rod 42 is fixedly connected to the first slider 21 on the base 12, one end of the third telescopic rod 43 is fixedly connected to the inner wall of the first housing 14, the other end of the third telescopic rod 43 is fixedly connected to the second slider 23, and the fourth telescopic rod 43 is fixedly connected to the inner wall of the first housing 14. One end of the rod 44 is fixedly connected to the inner wall of the first housing 14, the other end of the fourth telescopic rod 44 is fixedly connected to the cold pressing head 31, one end of the fifth telescopic rod 45 is fixedly connected to the inner wall of the second housing 15, and the other end of the fifth telescopic rod 45 is fixedly connected. Limiting block 125.

Preferably in this embodiment, when the first telescopic rod 41 performs a telescopic movement, it can drive the first slider 21 on the top base 11 to move up and down, and when the second telescopic rod 42 performs a telescopic movement, it can drive the first slider 21 on the base 12 . The slider 21 moves up and down. When the third telescopic rod 43 performs a telescopic motion, it can drive the second slider 23 to move up and down. When the fifth telescopic rod 45 performs a telescopic motion, it can drive the limiting block 125 to move up and down.

Referring to Figures 4-7, the driving assembly 4 also includes a control member 46, which includes a first connecting pipe 461, a second connecting pipe 462, a third connecting pipe 463, a fourth connecting pipe 464, a fifth The connecting tube 465, the control tube 466 and the movable rod 467. One end of the control tube 466 is fixedly connected to the first connecting tube 461, the second connecting tube 462, the third connecting tube 463 and the fifth connecting tube 465. The first connecting tube The other end of 461 is fixedly connected to the first telescopic rod 41, the other end of the second connecting pipe 462 is fixedly connected to the second telescopic rod 42, the other end of the third connecting pipe 463 is fixedly connected to the third telescopic rod 43, and the other end of the fifth connecting pipe 465 is fixedly connected. The fifth telescopic rod 45 and the other end of the control tube 466 are fixedly connected to one end of the fourth connecting pipe 464. The other end of the fourth connecting pipe 464 is fixedly connected to the fourth telescopic rod 44. The inner wall of the control tube 466 is slidingly connected to the movable rod 467.

Preferably in this embodiment, the hydraulic oil inside the control cylinder 466 can enter the first telescopic rod 41 through the first connecting pipe 461 to control the first telescopic rod 41 to perform telescopic movement, and the hydraulic oil inside the control cylinder 466 can pass through the second telescopic rod 461 . The connecting pipe 462 enters the second telescopic rod 42 to control the second telescopic rod 42 to telescopically move. The hydraulic oil inside the control tube 466 can enter the third telescopic rod 43 through the third connecting pipe 463 to control the third telescopic rod 43 to telescopically move. movement, the hydraulic oil inside the control cylinder 466 can enter the fourth telescopic rod 44 through the fourth connecting pipe 464, and the fourth telescopic rod 44 is controlled to perform telescopic movement. The hydraulic oil inside the control cylinder 466 can enter the fourth telescopic rod 44 through the fifth connecting pipe 465. Among the five telescopic rods 45, the fifth telescopic rod 45 is controlled to perform telescopic movement, and the movable rod 467 can slide on the inner wall of the control tube 466. When the movable rod 467 moves to the left side in Figure 7, the hydraulic oil inside the control tube 466 is Entering the first connecting pipe 461, the second connecting pipe 462, the third connecting pipe 463 and the fifth connecting pipe 465, when the movable rod 467 moves to the right in Figure 7, the hydraulic oil inside the control tube 466 enters. In the fourth connecting pipe 464, sealing rings are preferably installed at both ends of the movable rod 467, which is beneficial to improving the sealing between the movable rod 467 and the inner wall of the control cylinder 466.

The control cylinder 466 is provided with a sixth through slot 4661, the movable rod 467 is fixedly connected to the driving block 47, the driving block 47 is slidingly connected to the inner wall of the sixth through slot 4661, the driving block 47 is threadedly connected to the screw rod 48, and one end of the screw rod 48 is fixedly connected. Electric motor 49.

Preferably in this embodiment, the motor 49 is fixedly connected to the inner wall of the first housing 14 through the motor base, which plays a role in fixing the position of the motor 49. When the motor 49 is working, it can drive the screw rod 48 to rotate, and the screw rod 48 rotates under the action of the thread. The driving block 47 is driven to move, and the driving block 47 drives the movable rod 467 to slide on the inner wall of the control tube 466.

During use, first put the leads and copper tubes into the lead groove 111. At this time, the top of the limit block 125 is located in the lead groove 111. The end of the lead resists the limit block 125. The limit block 125 can limit the position of the lead. , at this time, the motor 49 starts to work, the motor 49 rotates forward, the motor 49 drives the screw rod 48 to rotate forward, the screw rod 48 drives the driving block 47 to move to the left side in Figure 7 under the action of the thread, and the driving block 47 drives the movement The rod 467 moves to the left in FIG. 7 , and at this time, the hydraulic oil inside the control tube 466 enters the first connecting pipe 461 , the second connecting pipe 462 , the third connecting pipe 463 and the fifth connecting pipe 465 .

At this time, the hydraulic oil in the first connecting pipe 461 enters the first telescopic rod 41, the first telescopic rod 41 extends, the hydraulic oil in the second connecting pipe 462 enters the second telescopic rod 42, and the second telescopic rod 42 extends. Long, the first telescopic rod 41 and the second telescopic rod 42 respectively drive the first slide blocks 21 on the inner walls of the first slot 112 on the top base 11 and the base 12 to approach each other, and the two first slide blocks 21 drive the arc-shaped knife 22 Being close to each other, the insulation layer on the lead can be cut, and the copper core part of the lead passes through the middle of the arc-shaped knife 22. At the same time, the hydraulic oil in the third connecting pipe 463 enters the third telescopic rod 43, and the third telescopic rod 43 When extended, the third telescopic rod 43 drives the second slider 23 to slide downward, and can drive the cutter 24 to move downward.

The cutter 24 cuts off the part of the lead close to the port, and trims the lead port to facilitate the connection between the lead and the copper pipe. At this time, the hydraulic oil in the fifth connecting pipe 465 enters the fifth telescopic rod 45, but the fifth telescopic rod 45 It is already at the elongation limit, so the fifth telescopic rod 45 no longer extends. At this time, the lead is pulled from the left. The arc-shaped knife 22 catches the insulation layer on the lead, pulls off the insulation layer cut on the lead, and removes the lead. Cut-away insulation for easy cold-press connection of leads.

Then the motor 49 is controlled to rotate in the reverse direction. The motor 49 drives the screw rod 48 to rotate in the opposite direction. The screw rod 48 drives the driving block 47 to move to the right in Figure 7 under the action of the thread. The driving block 47 drives the movable rod 467 to move to the right in Figure 7 move to the right, at this time, the hydraulic oil in the first connecting pipe 461, the second connecting pipe 462, the third connecting pipe 463 and the fifth connecting pipe 465 enters the inside of the control tube 466. At this time, the first telescopic rod 41, the second The telescopic rod 42, the third telescopic rod 43 and the fifth telescopic rod 45 retract, and the limit block 125 moves below the lead slot 111 to avoid blocking the lead. At this time, push it to the right of the lead slot 111, and the cut insulation layer and the lead are close to each other. The portion of the port falls from the dropping chute 123 and falls into the inside of the second housing 15 for collection.

Continue to control the motor 49 to rotate in the reverse direction. The motor 49 drives the screw rod 48 to rotate in the opposite direction. The screw rod 48 drives the driving block 47 to move to the right in Figure 7 under the action of the thread. The driving block 47 drives the movable rod 467 to move to the right in Figure 7 At this time, the hydraulic oil inside the right side of the control cylinder 466 enters the fourth telescopic rod 44 through the fourth connecting pipe 464. The fourth telescopic rod 44 extends, driving the cold head 31 to move downward to squeeze the copper pipe. , cooperate with the cold pressing groove 122 to complete the cold pressing connection of the tap changer lead.

After the cold pressing is completed, remove the leads and copper tubes, and then control the motor 49 to rotate forward. The motor 49 drives the screw rod 48 to rotate forward. The screw rod 48 drives the driving block 47 to move to the left in Figure 7 under the action of the thread. The driving block 47 drives the movable rod 467 to move to the left in Figure 7. At this time, the hydraulic oil inside the control tube 466 enters the first connecting pipe 461, the second connecting pipe 462, the third connecting pipe 463 and the fifth connecting pipe 465. , the length and radial size of the fifth telescopic rod 45 are smaller than the first telescopic rod 41, the second telescopic rod 42 and the third telescopic rod 43. The fifth telescopic rod 45 is first extended to the limit length. When the knife 24 has not moved into the lead groove 111, the top of the limit block 125 is located in the lead groove 111, and the end of the lead resists the limit block 125. The limit block 125 can limit the position of the lead, and the halving can begin. Connect the switch lead for the next cold-pressing connection. It is simple to operate and easy to use. At the same time, it avoids the different strength of different people during manual cold-pressing, which is beneficial to improving the quality of cold-pressing.

Claims (10)

1. A cold-pressed connection device for tap changer leads, characterized by: including Support assembly (1). The support assembly (1) includes a top base (11) and a base (12). The top base (11) and the base (12) are respectively provided with a lead slot (111) and a first through slot. (112), the top base (11) is provided with a second through groove (113) and a third through groove (114), and the base (12) is provided with a fourth through groove (121) and a cold pressing groove (122). The second through groove (113) is located above the fourth through groove (121), and the third through groove (114) is located above the cold pressing groove (122); Cutting assembly (2), the cutting assembly (2) includes a first slide block (21), an arc knife (22), a second slide block (23) and a cutter (24), the first slide block (21) 21) and the arc-shaped knife (22) are provided with two groups, and are arranged symmetrically. The first slider (21) is slidingly connected to the inner wall of the first through-slot (112), and the second slider (23) is slidably connected to the second through-slot (112). 113) Inner wall, the bottom of the second slider (23) is fixedly connected to the cutter (24); Cold pressing assembly (3), the cold pressing assembly (3) includes a cold pressing head (31), and the cold pressing head (31) is slidingly connected to the inner wall of the third channel (114). 2. The cold-pressed connection device for tap changer leads according to claim 1, characterized in that: a drop chute (123) is provided on the base (12). 3. The cold-pressed connection device for tap changer leads according to claim 1, characterized in that the bottom of the cutter (24) is inclined. 4. The cold-pressed connection device for tap changer leads according to claim 1, characterized in that: the base (12) is provided with a fifth through slot (124), and the inner wall of the fifth through slot (124) slides Attach limit block (125). 5. The cold-pressed connection device for tap changer leads according to claim 1, characterized in that: the support assembly (1) further includes a fixed rod (13), and there are two fixed rods (13), one respectively. Fixedly connect the top base (11) and the two sides of the base (12). 6. The cold-pressed connection device for tap changer leads according to claim 1, characterized in that: the support assembly (1) further includes a first housing (14) and a second housing (15), and the third housing (15) One shell (14) is fixedly connected to the upper surface of the top base (11), and the second shell (15) is fixedly connected to the lower surface of the base (12). 7. The cold-pressed connection device for tap changer leads according to claim 6, characterized in that: the second housing (15) is hingedly connected to a movable door (151). 8. The cold-pressed connection device for tap changer leads according to claim 7, characterized in that it also includes a driving assembly (4), and the driving assembly (4) includes a first telescopic rod (41) and a second telescopic rod. (42), the third telescopic rod (43), the fourth telescopic rod (44) and the fifth telescopic rod (45). One end of the first telescopic rod (41) is fixedly connected to the inner wall of the first housing (14). The other end of a telescopic rod (41) is fixedly connected to the first slider (21) on the top base (11), and one end of the second telescopic rod (42) is fixedly connected to the inner wall of the second housing (15). ) The other end of the third telescopic rod (43) is fixedly connected to the first slider (21) on the base (12), one end of the third telescopic rod (43) is fixedly connected to the inner wall of the first housing (14), and the other end of the third telescopic rod (43) is fixedly connected to the first slider (21) on the base (12). The second slider (23), one end of the fourth telescopic rod (44) is fixedly connected to the inner wall of the first housing (14), the other end of the fourth telescopic rod (44) is fixedly connected to the cold pressure head (31), and the fifth telescopic rod (45) ) one end is fixedly connected to the inner wall of the second housing (15), and the other end of the fifth telescopic rod (45) is fixedly connected to the limit block (125). 9. The cold-pressed connection device for tap changer leads according to claim 8, characterized in that: the driving assembly (4) further includes a control part (46), and the control part (46) includes a first connecting tube ( 461), the second connecting pipe (462), the third connecting pipe (463), the fourth connecting pipe (464), the fifth connecting pipe (465), the control tube (466) and the movable rod (467). One end of the barrel (466) is fixedly connected to one end of the first connecting pipe (461), the second connecting pipe (462), the third connecting pipe (463) and the fifth connecting pipe (465), and the other end of the first connecting pipe (461) The first telescopic rod (41) is fixedly connected, the other end of the second connecting pipe (462) is fixedly connected to the second telescopic rod (42), the other end of the third connecting pipe (463) is fixedly connected to the third telescopic rod (43), and the fifth The other end of the connecting pipe (465) is fixedly connected to the fifth telescopic rod (45), the other end of the control tube (466) is fixedly connected to one end of the fourth connecting pipe (464), and the other end of the fourth connecting pipe (464) is fixedly connected to the fourth telescopic rod. (44), the inner wall of the control cylinder (466) is slidingly connected to the movable rod (467). 10. The cold-pressed connection device for tap changer leads according to claim 9, characterized in that: the control barrel (466) is provided with a sixth through slot (4661), and the movable rod (467) is fixedly connected to the driving block (466). 47), the driving block (47) is slidingly connected to the inner wall of the sixth slot (4661), the driving block (47) is threadedly connected to the screw rod (48), and one end of the screw rod (48) is fixedly connected to the motor (49).