An apparatus for manufacturing an assembled one-time plug-in contact side bar
The mechanical positioning of the conveyor belt and feeding components enables automatic alignment and assembly of the insert contact side strip and the long strip slot, solving the problem of low assembly efficiency and improving assembly efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG XIANGHONG ELECTRIC CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-12
AI Technical Summary
The assembly efficiency of the single-insertion contact in the existing technology is low, and it requires manual alignment of the slots of the side strips and the long strip, resulting in low assembly efficiency and dependence on skilled workers.
The manufacturing equipment for assembling the insert contact side strips in one go includes a conveyor belt, a feeding assembly, and a pressing assembly. The mechanical positioning achieves automatic alignment and assembly of the side strips with the long strip slots, reducing human operation errors.
It improves assembly efficiency and installation accuracy, reduces labor costs and the risk of human error, and reduces the need for skilled workers.
Smart Images

Figure CN224355153U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of primary plug-in contact processing, and in particular to a manufacturing apparatus for assembling primary plug-in contact side strips. Background Technology
[0002] A primary plug-in contact is a pluggable conductive contact component used in high-voltage switchgear, installed on movable parts such as circuit breaker trolleys and fixed cabinets, to achieve electrical connection of the main circuit.
[0003] In related technologies, such as Figure 1 As shown, the primary plug-in contact includes four long strips 13, two side strips 14, a large sleeve 15, and a small buckle 16. The long strips 13 have slots 17 for the side strips 14 to insert into. During assembly, first manually overlap the four long strips 13 in pairs, so that the slots 17 are located on the sides of the long strips 13 that are furthest apart. Then, insert the side strips 14 into the slots 17. Next, place the large sleeve 15 onto the long strips 13 and side strips 14. Finally, press the small buckle 16 onto the large sleeve 15.
[0004] However, the above-mentioned method of manually assembling the primary plug-in contact requires manually aligning the slots 17 on the side bar 14 and the long bar 13, resulting in low assembly efficiency of the primary plug-in contact, which needs to be improved. Utility Model Content
[0005] To improve the assembly efficiency of primary plug-in contacts, this application provides a manufacturing apparatus for assembling primary plug-in contact side strips.
[0006] The manufacturing equipment for assembling primary plug-in contact side strips provided in this application adopts the following technical solution:
[0007] A manufacturing apparatus for assembling a single-insert contact side strip includes a frame, a conveyor belt mounted on the frame, a feeding assembly mounted on the frame, and a pressing assembly mounted on the frame. The feeding assembly is used to transport the side strip onto the conveyor belt, and the pressing assembly is used to push the side strip into a slot.
[0008] By adopting the above technical solution, when assembling primary plug-in contacts using this equipment, the assembled strip is simply placed on a conveyor belt. The conveyor belt then transports the strip to be assembled to the processing station. The feeding component automatically transports the side strip above the conveyor belt, aligning it with the slot on the long strip. The pressing component then pushes the side strip into the slot, thus assembling it in place. This method of assembling side strips eliminates the need for manual alignment of the slots on the side strip and long strip, and the movement of both is automated by the conveyor belt and feeding component. The equipment uses mechanical positioning to ensure precise alignment of the side strip with the long strip's slots, reducing the possibility of assembly failures due to visual errors during manual operation. This significantly improves the assembly efficiency of primary plug-in contacts, reduces the need for skilled workers, and lowers labor costs and the risk of human error.
[0009] Optionally, the feeding assembly includes a mounting plate mounted on the frame, a horizontal drive component mounted on the mounting plate, a sliding plate mounted on the horizontal drive component, a downward drive component mounted on the sliding plate, a movable plate mounted on the downward drive component, and a clamping component mounted on the movable plate. The sliding plate is slidably mounted on the mounting plate, and the movable plate is slidably mounted on the sliding plate. The horizontal drive component drives the sliding plate to move horizontally toward or away from the conveyor belt, and the vertical drive component drives the movable plate to move vertically toward or away from the conveyor belt.
[0010] By adopting the above technical solution, during the process of the feeding component transporting the side strip to the conveyor belt, the horizontal drive component first drives the sliding plate to slide away from the conveyor belt on the mounting plate. Then, the vertical drive component drives the movable plate to move closer to the side strip, thereby clamping the side strip. Then, the vertical drive component drives the movable plate to move away from the side strip discharge port. Then, the horizontal drive component drives the sliding plate to move closer to the conveyor belt, thereby transmitting the side strip to the position on the conveyor belt opposite to the slot of the long strip. The horizontal drive component controls the lateral distance between the side strip and the conveyor belt, and the vertical drive component adjusts the height to ensure that the side strip enters the conveyor belt in the best posture. Mechanical drive replaces manual placement, avoiding the side strip from shifting or tipping during transmission, and further improving the installation accuracy of the side strip and the long strip.
[0011] Optionally, the clamping member includes a clamping drive, a drive block disposed on the clamping drive, a fixed plate disposed on a movable plate, and two jaws slidably disposed on the fixed plate. The clamping drive is disposed on the fixed plate, and the two jaws are disposed on the side of the drive block away from the clamping drive and are disposed opposite to each other. A connecting spring is provided on the side of the two jaws away from each other. One end of the connecting spring is connected to the jaw and the other end is connected to the fixed plate. The connecting spring has a tendency to drive the two jaws to move closer to each other. A guide slope is provided on the jaw. The width of the jaw on the side closer to the drive block is smaller than the width on the side away from the drive block. The drive block is disposed between the two jaws. The clamping drive can drive the drive block to move closer to or away from the jaws.
[0012] By adopting the above technical solution, when the clamping component clamps the side strip, the clamping drive component first drives the drive block to move closer to the clamping jaws, and then the vertical drive component drives the clamping jaws to move closer to the side strip, so that the side strip is located between the two clamping jaws. Then, the clamping drive component drives the drive block to move away from the clamping jaws, so that the two clamping jaws move closer to each other under the action of the connecting spring, thereby clamping the side strip between the two clamping jaws. Then, the vertical drive component and the horizontal drive component drive the clamping jaws to move closer to the conveyor belt in sequence, so that the side strip on the clamping jaws is aligned with the slot on the long strip. Then, the vertical drive component drives the clamping jaws to move closer to the conveyor belt again, so that the clamping jaws insert the side strip into the slot of the long strip. Then, the clamping drive component drives the drive block to move closer to the clamping jaws, so that the two clamping jaws move away from each other, and under the action of the vertical drive component, move away from the conveyor belt, thereby releasing the side strip and completing the stable transportation of the side strip. The connecting spring provides a constant preload, allowing the grippers to adapt to side bars of different thicknesses, reducing the risk of pinching or detachment. The drive block converts linear motion into symmetrical opening and closing of the grippers through the guide ramp, ensuring stable clamping and smooth release.
[0013] Optionally, the drive block is provided with a guide ramp that slides with the guide ramp, and the width of the drive block on the side closer to the gripper is smaller than the width on the side farther from the gripper.
[0014] By adopting the above technical solution, when the drive block moves towards or away from the gripper, the guide ramp will contact and slide relative to the guide ramp. Compared to the sliding engagement of one edge of the drive block with the guide ramp, the sliding engagement of the guide ramp with the guide ramp reduces the frictional loss between the gripper and the drive block, extending the service life of both the gripper and the drive block. Furthermore, the ramp engagement structure efficiently converts the linear thrust of the drive block into the radial clamping force of the gripper, reducing losses. It also reduces rigid impact between the gripper and the drive block, decreases the possibility of sudden force changes on the side strips during gripping, and improves the smoothness of movement.
[0015] Optionally, the pressing assembly includes a push drive component disposed on the fixed plate and a pressing plate disposed on the push drive component. The pressing plate is slidably disposed between two grippers. The drive block has a sliding groove for the pressing plate to slide. The push drive component can drive the pressing plate to move towards or away from the grippers.
[0016] By adopting the above technical solution, after the grippers move the side strip to a position opposite to the slot of the long strip, the lower pressure plate will move towards the grippers under the action of the driving component, thereby pushing the side strip out from between the two grippers and completely pushing the side strip into the slot of the long strip, so that the side strip and the long strip are assembled in place. Clamping and pressing are completed in the same station, eliminating the side strip transfer step, shortening the cycle time. The lower pressure plate moves along the sliding groove of the driving block to ensure that the pressing force acts perpendicularly on the side strip, reducing the possibility of assembly tilt. After the side strip is inserted into the slot of the long strip and installed in place, the lower pressure plate will move away from the grippers under the action of the driving component, so that the side strip can be clamped when the two grippers come close to each other next. The lower pressure plate will not be located between the two grippers and obstruct the gripping of the side strip, ensuring the gripping effect of the grippers on the side strip.
[0017] Optionally, the feeding assembly further includes a vibratory feeder mounted on the frame, a material preparation platform mounted on one side of the vibratory feeder's discharge pipe, and a feeding drive unit connected to the material preparation platform. The material preparation platform is provided with a receiving groove for the side strip to slide into, and the feeding drive unit can drive the material preparation platform to move towards or away from the vibratory feeder's discharge pipe.
[0018] By adopting the above technical solution, when feeding side strips, the vibratory feeder first organizes and orients the randomly arranged side strips to the discharge pipe. Then, the feeding drive moves the preparation platform closer to the vibratory feeder's discharge pipe, connecting the receiving slot of the preparation platform with the discharge pipe of the vibratory feeder. This allows the side strips to move from the discharge pipe into the receiving slot. Next, the feeding drive moves the preparation platform away from the vibratory feeder's discharge track, misaligning the receiving slot with the discharge track. At this point, the side wall of the preparation platform blocks the discharge pipe of the vibratory feeder, preventing the side strips from moving out. The grippers then pick up the side strips from the preparation platform for assembly. Before the next gripper picks up a side strip, the feeding drive moves the preparation platform again closer to and away from the vibratory feeder's discharge pipe, allowing the next side strip to enter the receiving slot for gripper gripping and assembly. The preparation platform temporarily stores the side strips and accurately transfers them to the gripping components, achieving continuous feeding.
[0019] Optionally, the conveyor belt is provided with a fixed platform, and the fixed platform is provided with a fixed groove for accommodating long strips.
[0020] By adopting the above technical solution, when the conveyor belt transports long strips, the groove wall of the fixed groove can prevent the long strips from shaking freely, making the long strips more stable during transportation, which makes it easier to align the side strips and the long strips with the grooves, and improves the convenience of side strip installation.
[0021] Optionally, the pressing assembly further includes a fixing member disposed on the frame. The fixing member includes a pressing drive and a pressing plate disposed on the pressing drive. The pressing drive can drive the pressing plate to move toward or away from the fixed platform.
[0022] By adopting the above technical solution, before the gripper moves the side strip above the conveyor belt, the clamping drive will move the clamping plate towards the fixed table, so that the strip is clamped in the fixed groove, further fixing the strip so that it is not easy for the strip to fall out of the fixed groove, making it easier to install the side strip.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. The side strips are transported by the feeding assembly, eliminating the need for manual alignment of the side strips and long strips in the slots, thus improving the assembly efficiency and installation accuracy of the primary plug-in contacts;
[0025] 2. After the side strip is transported to the slot of the long strip by the clamping jaws through the pressure plate, the side strip is pushed into the slot at the same time, and the clamping and installation are completed in the same station, which further improves the assembly efficiency of the primary plug-in contact.
[0026] 3. The preparation table can prepare the side strips in advance so that the grippers can clamp and install the side strips in an orderly and continuous manner. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the overall structure of a primary plug-in contact in related technologies.
[0028] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application.
[0029] Figure 3 This is a partial structural diagram of the gripper used to illustrate an embodiment of this application.
[0030] Figure 4 This is a partial structural diagram of the driving block used in an embodiment of this application.
[0031] Explanation of reference numerals in the attached figures:
[0032] 1. Frame; 11. Fixed platform; 111. Fixed groove; 12. Mounting bracket; 13. Long strip; 14. Side strip; 15. Large sleeve; 16. Small buckle; 17. Card slot; 2. Conveyor belt; 3. Feeding assembly; 31. Mounting plate; 32. Horizontal drive component; 33. Sliding plate; 34. Downward drive component; 35. Movable plate; 36. Clamping component; 361. Clamping drive component; 362. Drive block; 363. 364. Fixed plate; 365. Gripper; 366. Connecting spring; 367. Guide slope; 368. Guide slope; 369. Sliding groove; 37. Vibratory feeder; 38. Material preparation table; 381. Receiving groove; 39. Feeding drive component; 4. Pressing assembly; 41. Fixing component; 411. Pressing drive component; 412. Pressing plate; 42. Pushing drive component; 43. Pressing plate; 5. Drive motor; 6. Rotating shaft. Detailed Implementation
[0033] The following is in conjunction with the appendix Figure 2-4 This application will be described in further detail.
[0034] This application discloses a manufacturing apparatus for assembling a primary plug-in contact side strip.
[0035] Reference Figure 2 A manufacturing device for assembling primary plug-in contact side strips includes a frame 1, a conveyor belt 2, a feeding assembly 3, and a pressing assembly 4. The conveyor belt 2 is mounted on the frame 1, which also houses a drive motor 5 for rotating the conveyor belt 2 and a rotating shaft 6 passing through the conveyor belt 2. The feeding assembly 3 and the pressing assembly 4 are also mounted on the frame 1. The feeding assembly 3 transports the side strips onto the conveyor belt 2, and the pressing assembly 4 pushes the side strips into slots. This achieves automated assembly of the primary plug-in contact side strips, reducing the tedious manual alignment process and significantly improving assembly efficiency.
[0036] Reference Figure 2 The conveyor belt 2 is provided with several fixed platforms 11, and each fixed platform 11 has a fixed groove 111 for accommodating long strips. The frame 1 is provided with a mounting frame 12. The pressing assembly 4 includes a fixing member 41 mounted on the frame 1. The fixing member 41 includes a pressing drive member 411 and a pressing plate 412 mounted on the pressing drive member 411. The pressing plate 412 is I-shaped to ensure stable pressing of the long strip. In this embodiment, the pressing drive member 411 can be a pressing cylinder. The pressing cylinder is mounted on the mounting frame 12, and the pressing plate 412 is connected to the piston rod of the pressing cylinder. The pressing cylinder can drive the pressing plate 412 to move towards or away from the fixed platform 11, thereby pressing the long strip against the groove wall of the fixed groove 111, which facilitates the assembly of the side strip.
[0037] Reference Figure 3The feeding assembly 3 includes a mounting plate 31, a horizontal drive component 32, a sliding plate 33, a downward drive component 34, a movable plate 35, and a clamping component 36. The mounting plate 31 is mounted on the frame 1 and can be fixed to the frame 1 by welding or bolting. For example, high-strength bolts can be used to securely install the mounting plate 31 at a designated position on the frame 1. The horizontal drive component 32 is mounted on the mounting plate 31 and can be a cylinder or an electric push rod, etc. Taking a cylinder as an example, the cylinder body is mounted on the mounting plate 31 by bolts.
[0038] Reference Figure 3 The sliding plate 33 is mounted on the mounting plate 31 and connected to the horizontal drive component 32. The sliding plate 33 and the mounting plate 31 can slide together via a guide rail and slider. For example, a linear guide rail can be mounted on the mounting plate 31, and a matching slider can be mounted on the bottom of the sliding plate 33, allowing the sliding plate 33 to slide smoothly along the guide rail. The horizontal drive component 32 can drive the sliding plate 33 to move horizontally towards or away from the conveyor belt 2. When the horizontal drive component 32 is a cylinder, the extension and retraction of the cylinder's piston rod can move the sliding plate 33.
[0039] Reference Figure 3 The downward drive component 34 is mounted on the sliding plate 33 and can also be fixed with bolts. The downward drive component 34 can also be a cylinder or an electric push rod; here, a cylinder is used as an example, with the cylinder housing mounted on the sliding plate 33. The movable plate 35 is mounted on the downward drive component 34 and slidably mounted on the sliding plate 33. They can also be coupled using a guide rail and slider mechanism. The extension and retraction of the cylinder piston rod can drive the movable plate 35 to move vertically towards or away from the conveyor belt 2.
[0040] Reference Figure 2 and Figure 3 The feeding assembly 3 also includes a vibratory feeder 37, a material preparation platform 38, and a feeding drive 39. The vibratory feeder 37 is mounted on the frame 1, the material preparation platform 38 is located on one side of the discharge pipe of the vibratory feeder 37, and the feeding drive 39 is connected to the material preparation platform 38. In this embodiment, the feeding drive 39 can be a feeding cylinder, and the material preparation platform 38 is connected to the piston rod of the feeding cylinder so that the feeding cylinder can drive the material preparation platform 38 to move towards or away from the discharge pipe of the vibratory feeder 37. The material preparation platform 38 has a receiving groove 381 for the side strip to slide into.
[0041] Reference Figure 3The clamping component 36 is mounted on the movable plate 35 and includes a clamping drive component 361, a drive block 362, a fixed plate 363, and two grippers 364. The clamping drive component 361, which can be a small cylinder, is mounted on the fixed plate 363. The drive block 362 is mounted on the clamping drive component 361 and moves when the clamping drive component 361 is activated. The fixed plate 363 is mounted on the movable plate 35 and is fixed by bolts.
[0042] Reference Figure 3 Two grippers 364 are slidably mounted on the fixed plate 363. The two grippers 364 are located on the side of the drive block 362 away from the clamping drive member 361 and are arranged opposite to each other. A connecting spring 365 is provided on the side of the two grippers 364 away from each other. One end of the connecting spring 365 is connected to the gripper 364 and the other end is connected to the fixed plate 363. The connecting spring 365 has a tendency to drive the two grippers 364 to move closer to each other.
[0043] Reference Figure 3 and Figure 4 The gripper 364 has a guide ramp 367, and the width of the gripper 364 near the drive block 362 is smaller than the width of the side away from the drive block 362. The drive block 362 has a guide ramp 368 that slides with the guide ramp 367, and the width of the drive block 362 near the gripper 364 is smaller than the width of the side away from the gripper 364. The drive block 362 is positioned between the two grippers 364, and the clamping drive member 361 can drive the drive block 362 to move closer to or away from the grippers 364.
[0044] Reference Figure 3 and Figure 4 When the drive block 362 approaches the gripper 364, it causes the gripper 364 to overcome the spring force and separate to both sides; when the drive block 362 moves away from the gripper 364, the gripper 364 will move closer together under the action of the spring to clamp the side strip. This design makes the cooperation between the guide slope 368 and the guide slope 367 smoother during the movement of the drive block 362, and enables more precise control of the opening and closing of the gripper 364.
[0045] Reference Figure 2 , Figure 3 and Figure 4The pressing assembly 4 also includes a push drive 42 and a pressing plate 43, wherein the push drive 42 is disposed on the fixed plate 363, and the pressing plate 43 is disposed on the push drive 42. In this embodiment, the push drive 42 can be a push cylinder, and the pressing plate 43 is connected to the piston rod of the push cylinder so that when the push cylinder is actuated, it can drive the pressing plate 43 to move towards or away from the gripper 364, thereby pushing the side strip clamped by the gripper 364 into the slot. The pressing plate 43 is slidably disposed between the two grippers 364, and the drive block 362 has a sliding groove 369 for the pressing plate 43 to slide. The horizontal drive 32, the pressing drive 34, the vertical drive, the clamping drive 361, the push drive 42, the feeding drive 39, and the pressing drive 411 are all electrically connected to the same controller to coordinate the orderly operation of each drive.
[0046] The implementation principle of the manufacturing equipment for assembling a single-insert contact side strip according to an embodiment of this application is as follows: When assembling the side strip using this equipment, the horizontal drive unit 32 first drives the sliding plate 33 and the gripper 364 to move horizontally above the preparation table 38. Then, the loading drive unit 39 drives the preparation table 38 to move towards the discharge pipe of the vibrating plate 37, so that the side strip is moved into the preparation table 38. Then, the loading drive unit 39 drives the preparation table 38 to move away from the discharge pipe of the vibrating plate 37, so that the side strip is moved below the gripper 364. Then, the clamping drive unit 361 controls the opening and closing of the gripper 364 to achieve clamping and releasing of the side strip. The horizontal drive unit 32 and the vertical drive unit coordinate to move the side strip above the conveyor belt 2, so that the side strip corresponds to the slot position of the long strip and extends into the slot. Then, the clamping drive unit 361 controls the gripper 364 to release the side strip. Finally, the push drive unit 42 controls the lower pressure plate 43 to push the side strip into the slot so that the side strip is installed in place. It reduces errors from manual operation and improves the assembly efficiency of single-insertion contacts.
[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A manufacturing apparatus for assembling primary plug-in contact side strips, characterized in that: It includes a frame (1), a conveyor belt (2) mounted on the frame (1), a feeding assembly (3) mounted on the frame (1), and a pressing assembly (4) mounted on the frame (1). The feeding assembly (3) is used to transport the side strip (14) onto the conveyor belt (2), and the pressing assembly (4) is used to push the side strip (14) into the slot (17).
2. The manufacturing equipment for assembling a primary plug-in contact side strip according to claim 1, characterized in that: The feeding assembly (3) includes a mounting plate (31) on the frame (1), a horizontal drive (32) on the mounting plate (31), a sliding plate (33) on the horizontal drive (32), a downward drive (34) on the sliding plate (33), a movable plate (35) on the downward drive (34), and a clamping member (36) on the movable plate (35). The sliding plate (33) is slidably mounted on the mounting plate (31), and the movable plate (35) is slidably mounted on the sliding plate (33). The horizontal drive (32) is used to drive the sliding plate (33) to move horizontally toward or away from the conveyor belt (2), and the downward drive (34) is used to drive the movable plate (35) to move vertically toward or away from the conveyor belt (2).
3. The manufacturing equipment for assembling a primary plug-in contact side strip according to claim 2, characterized in that: The clamping member (36) includes a clamping drive member (361), a drive block (362) disposed on the clamping drive member (361), a fixed plate (363) disposed on the movable plate (35), and two jaws (364) slidably disposed on the fixed plate (363). The clamping drive member (361) is disposed on the fixed plate (363), and the two jaws (364) are disposed on the side of the drive block (362) away from the clamping drive member (361) and are disposed opposite to each other. A connecting spring (365) is provided on the side of the two jaws (364) away from each other. One end of the spring (365) is connected to the gripper (364) and the other end is connected to the fixed plate (363). The connecting spring (365) has a tendency to drive the two grippers (364) to move closer to each other. The gripper (364) is provided with a guide slope (367). The width of the gripper (364) on the side closer to the drive block (362) is smaller than the width on the side away from the drive block (362). The drive block (362) is disposed between the two grippers (364). The clamping drive (361) can drive the drive block (362) to move closer to or away from the gripper (364).
4. The manufacturing equipment for assembling a primary plug-in contact side strip according to claim 3, characterized in that: The drive block (362) is provided with a guide slope (368) that slides with the guide slope (367), and the width of the drive block (362) on the side near the gripper (364) is smaller than the width on the side away from the gripper (364).
5. The manufacturing equipment for assembling a primary plug-in contact side strip according to claim 3, characterized in that: The pressing assembly (4) includes a push drive member (42) disposed on a fixed plate (363) and a pressing plate (43) disposed on the push drive member (42). The pressing plate (43) is slidably disposed between two grippers (364). The drive block (362) has a sliding groove (369) for the pressing plate (43) to slide. The push drive member (42) can drive the pressing plate (43) to move towards or away from the grippers (364).
6. The manufacturing equipment for assembling a primary plug-in contact side strip according to claim 2, characterized in that: The feeding assembly (3) also includes a vibratory plate (37) mounted on the frame (1), a preparation platform (38) mounted on one side of the discharge pipe of the vibratory plate (37), and a feeding drive unit (39) connected to the preparation platform (38). The preparation platform (38) is provided with a receiving groove (381) for the side strip (14) to slide into. The feeding drive unit (39) can drive the preparation platform (38) to move towards or away from the discharge pipe of the vibratory plate (37).
7. The manufacturing equipment for assembling a primary plug-in contact side strip according to claim 1, characterized in that: The conveyor belt (2) is provided with a fixed platform (11), and the fixed platform (11) is provided with a fixed groove (111) for accommodating the long strip (13).
8. The manufacturing equipment for assembling a primary plug-in contact side strip according to claim 7, characterized in that: The pressing assembly (4) further includes a fixing member (41) disposed on the frame (1). The fixing member (41) includes a pressing drive member (411) and a pressing plate (412) disposed on the pressing drive member (411). The pressing drive member (411) can drive the pressing plate (412) to move towards or away from the fixed platform (11).