A power construction cable connection device

Abstract

The application belongs to the technical field of cable connection devices, and particularly relates to a power construction cable connection device, which comprises a box body, a power connection end plate fixedly arranged in the box body, and a partition plate fixedly arranged at the middle position of the power connection end plate. The partition plate divides the inner wall of the box body into two independent connection cavities, and the internal structures of the two connection cavities are the same. When the cable core and the power connection end plate are subjected to pressure connection operation through the pressure connection assembly, the position correction assembly drives the position correction frame plate to correct the position of the cable core arranged in the power connection end plate, so that the cable core arranged in the power connection end plate is in a straightened state, the cable core can be uniformly stressed during pressure connection, the conduction performance of the cable is improved, the situation that the cable core and the power connection end plate are not closely contacted is avoided, then another cable is connected in another connection cavity in this way, and the connection operation between the two cables is realized through the conduction performance of the power connection end plate.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of cable connection devices, and particularly relates to a power construction cable connection device. BACKGROUND

[0002] A cable is a wire for transmitting electric power or information from one place to another, which is made of one or more mutually insulated conductors and an outer insulating protective layer, and is usually composed of a conductive wire core, an insulating layer, a shielding layer and a protective layer.

[0003] In a power system, a cable connection device is a device for realizing reliable electrical connection between cables and cables, cables and electrical equipment, and the core function thereof is to ensure smooth current transmission, provide insulation protection, and adapt to mechanical strength and protection requirements in different environments.

[0004] A patent application with the publication number CN119253386A discloses a cable connector for power construction, which comprises two twisted rods driven to rotate by a rotating away mechanism, so as to synchronously and oppositely wind the end portions of two X-shaped cross-arranged wires, so as to achieve a twisted connection structure, so that the cable connection is more compact, and the horizontal twisted arrangement of the two wires can be realized by one-time guiding insertion and one-time rotation driving, so that the twisted connection process of the wires is more convenient and fast, and the connection efficiency of the cable is effectively improved.

[0005] At present, in the prior art, when two cable wires are connected in a crimping manner, the wire core of the cable wire has a certain toughness, and when the cable wire is inserted into the connection device, the wire core may be twisted on the connection end plate, and in the subsequent connection process, the contact between the conductors may not be tight, which affects the conduction effect between the cables.

[0006] Therefore, the application provides a power construction cable connection device. SUMMARY

[0007] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0008] The technical scheme adopted by the present application to solve its technical problems is: the power construction cable connecting device comprises a box body, an electricity connection end plate is fixedly installed in the inside of the box body, a partition plate is fixedly installed at the middle position of the electricity connection end plate, the inside wall of the box body is divided into two independent connecting cavities by the partition plate, the internal structures of the two connecting cavities are the same, a crimping assembly is arranged in the connecting cavity, the crimping assembly is used for crimping between the cable and the electricity connection end plate, a position correcting assembly is symmetrically arranged in the inside of the electricity connection end plate, the position correcting assembly is arranged on the two sides of the crimping assembly, the position correcting assembly comprises a position correcting frame plate, the position correcting assembly is used for driving the position correcting frame plate to correct the position of the cable in the electricity connection end plate, pipe mouths are fixedly installed at the two ends of the box body, cable fixing assemblies are arranged in the two pipe mouths, and the cable fixing assemblies are used for fixedly connecting the cable and the box body.

[0009] When the cables need to be connected, the core of the cable is inserted into one of the connecting cavities in the box body through the pipe mouth, the core is arranged on the electricity connection end plate in the connecting cavity, the cable and the box body are fixed by rotating the cable fixing assembly on the corresponding pipe mouth, the cable is prevented from being separated from the box body due to vibration in the subsequent use process, and the connection effect between the two cables is affected, when the cable is fixed to the box body, the crimping assembly is moved by pressing, the crimping assembly is used for crimping between the core of the cable and the electricity connection end plate, meanwhile, the position correcting assembly drives the position correcting frame plate to correct the position of the core of the cable in the electricity connection end plate, the core of the cable in the electricity connection end plate is in a straightened state, the core can bear force uniformly during crimping, the contact area between conductors is maximized, the conduction performance of the cable is improved, and the situation that the core and the electricity connection end plate are not in close contact is avoided, when the core is corrected to the position, the core of the cable is crimped into the inside of the electricity connection end plate by the crimping assembly, another cable is connected in another connecting cavity in this way, when the two cables are connected, the two cables can conduct through the conduction performance of the electricity connection end plate, so that the connection between the two cables is realized, and the cables are connected.

[0010] Preferably, the crimping assembly comprises a pressing handle, the pressing handle is in sliding connection with the inner wall of the box body, the bottom of the pressing handle is fixedly installed with a pressing plate, the bottom of the pressing plate is fixedly installed with a crimping die holder, the inner wall of the box body is fixedly installed with vertical plates in a symmetrical manner, the pressing plate is arranged between the two vertical plates and the outer wall of the pressing plate is in sliding connection with the inner sides of the two vertical plates, when the cable fixing assembly drives the cable and the box body to be fixed, the core of the cable is arranged on the top of the power connection end plate, then the pressing handle is pressed to move downward, when the pressing handle moves downward, the pressing handle drives the crimping die holder to move downward between the two vertical plates through the pressing plate, the crimping die holder gradually approaches the cable core in the power connection end plate, when the bottom end of the crimping die holder is inserted into the power connection end plate, at this time, the inner wall of the crimping die holder is in contact with the core of the electric wire, by pressing the pressing handle, the cable core is connected between the crimping die holder and the power connection end plate, which plays a role in connecting the cable core and the power connection end plate.

[0011] Preferably, the position correcting assembly further comprises a displacement plate, the bottom of the displacement plate is fixedly connected with the top end of the position correcting frame plate, the top of the power connection end plate is fixedly installed with a limiting sliding plate, the top of the limiting sliding plate is in sliding connection with the bottom of the position correcting frame plate, the outer wall of the limiting sliding plate is fixedly installed with a limiting plate, the top end of the limiting plate is in abutment with one side of the displacement plate, the top of the power connection end plate is fixedly installed with two limiting sliding boxes, the limiting sliding plate is fixedly installed between the two limiting sliding boxes, the two ends of the position correcting frame plate are in sliding connection with the inner walls of the two limiting sliding boxes, and the outer wall of the position correcting frame plate can be in sliding connection with the outer wall of the crimping die holder; when the pressing plate drives the crimping die holder to move downward, the displacement plate is moved by pushing, when the displacement plate moves, the displacement plate drives the position correcting frame plate to slide downward to the side by the limiting setting of the limiting plate and the limiting setting of the limiting sliding box, when the position correcting frame plate contacts the core of the cable, the two position correcting frame plates push the core to move from the two sides of the core, since the two position correcting frame plates are arranged on the two sides of the power connection end plate, the two position correcting frame plates are synchronously inclined to slide downward when moving downward, therefore, when the two position correcting frame plates cannot move, at this time, the two position correcting frame plates correct the core of the cable to be centered on the top of the power connection end plate, and the crimping die holder is used for circularly wrapping and pressing the cable, so that the cable in the power connection end plate is in a flat state when the crimping die holder contacts the cable core to be crimped between the cable core and the power connection end plate, the cable core and the power connection end plate are tightly combined, the virtual connection phenomenon is avoided, the cable core is straightened after crimping, the cable core and the power connection end plate form a stable overall structure, the anti-pulling ability is stronger, the connection is less loose due to vibration or external force, the function of straightening the core is achieved, and the device can correct the cores of different specifications of cables by moving the position correcting frame plate through the limiting sliding box.

[0012] Preferably, the inner wall of the two slide limit boxes is symmetrically fixed with a slide limiting rod, the inner wall of the two ends of the position correcting plate is respectively connected with the outer wall of the four slide limiting rods in pairs, the two ends of the slide limit box and the inner wall of the two slide limit boxes are symmetrically provided with a position pushing spring, and the four position pushing springs are respectively arranged outside the four slide limiting rods. When the displacement plate drives the position correcting plate to move downward, the two ends of the position correcting plate will slide in the slide limit box, and the two ends of the position correcting plate will extrude the position pushing spring to slide downward on the slide limiting rod, so that the position correcting plate approaches the cable core. Through the arrangement of the position pushing spring, when the device is not used, the two position pushing springs are always arranged above the power connection end plate, so as to avoid that the two position pushing springs are directly arranged in the inside of the power connection end plate without support, which affects the penetration of the cable core, and the position pushing spring is supported.

[0013] Preferably, the inner wall of the two slide limit boxes is symmetrically fixed with a slide limiting rod, the inner wall of the two ends of the position correcting plate is respectively connected with the outer wall of the four slide limiting rods in pairs, the two ends of the slide limit box and the inner wall of the two slide limit boxes are symmetrically provided with a position pushing spring, and the four position pushing springs are respectively arranged outside the four slide limiting rods. When the displacement plate drives the position correcting plate to move downward, the two ends of the position correcting plate will slide in the slide limit box, and the two ends of the position correcting plate will extrude the position pushing spring to slide downward on the slide limiting rod, so that the position correcting plate approaches the cable core. Through the arrangement of the position pushing spring, when the device is not used, the two position pushing springs are always arranged above the power connection end plate, so as to avoid that the two position pushing springs are directly arranged in the inside of the power connection end plate without support, which affects the penetration of the cable core, and the position pushing spring is supported.

[0014] Preferably, the top of the pressing plate is symmetrically fixed with a toothed rod, the outer walls of the two toothed rods are slidably connected with the inner walls of the vertical plate, the outer wall of the vertical plate is symmetrically rotatably connected with a gear, the teeth of the two toothed rods are respectively engaged with the teeth of the two gears, a ratchet wheel is symmetrically fixed between the two gears, the outer part of the vertical plate is symmetrically provided with a self-locking assembly, and the two self-locking assemblies are respectively arranged on one side of the two ratchet wheels. When the pressing plate moves downward, the pressing plate drives the toothed rod to move downward, the toothed rod drives the gear to rotate when moving downward, and the gear drives the ratchet wheel to rotate. When the crimping die frame completely presses the cable core into contact with the power terminal plate, the self-locking assembly self-locks the ratchet wheel, the pressing plate is positionally fixed through the self-locking of the ratchet wheel by the self-locking assembly, and the crimping die frame presses the cable core and the power terminal plate into full contact, thereby fixing the position of the crimping die frame.

[0015] Preferably, the self-locking assembly comprises a limiting rod fixedly installed on the outer wall of the vertical plate, a clamping rod rotatably connected with the outer wall of the vertical plate, an inner shrinking rod fixedly installed at the bottom of the clamping rod, the outer wall of the inner shrinking rod being slidably connected with the inner wall of the vertical plate, a return spring arranged between the bottom of the clamping rod and the outer wall of the vertical plate, the return spring being arranged outside the inner shrinking rod, one end of the clamping rod being capable of being clamped with a plurality of tooth grooves on the ratchet wheel, the tooth grooves on the ratchet wheel pushing the clamping rod to move when the gear drives the ratchet wheel to rotate, the clamping rod pressing the return spring to drive the inner shrinking rod to rotate on the vertical plate, the pressing plate stopping driving the toothed rod to move downward when the crimping die frame completely presses the cable core into contact with the power terminal plate, the ratchet wheel stopping rotating, the clamping rod being re-clamped into the tooth grooves in the ratchet wheel through the elastic return of the return spring, and the return spring cooperating with the limiting of the limiting rod to fix and self-lock the ratchet wheel, thereby self-locking and fixing the crimping die frame. Through the unique tooth groove arrangement of the ratchet wheel and the clamping and fixing of the clamping rod, the ratchet wheel can only rotate in one direction and cannot be reversed. Through this arrangement, the crimping die frame can be better crimped between the cable core and the power terminal plate without being affected by external ground vibration and other factors when the crimping die frame presses the cable core into contact with the power terminal plate.

[0016] Preferably, the fixed cable assembly comprises a swivel ring, the inner wall of the pipe mouth is fixedly installed with a vertical block, the inner wall of the pipe mouth is fixedly installed with a wrapping cloth, the outer wall of the wrapping cloth is slidably connected with the inner wall of the vertical block, the outer wall of the wrapping cloth can be in close contact with the outer wall of the cable, one end of the wrapping cloth is fixedly connected with the inner wall of the swivel ring, when the core of the cable is inserted into one of the connecting cavities in the box through the pipe mouth, the core is placed on the power connection end plate in the connecting cavity, then the swivel ring is rotated, the swivel ring pulls the wrapping cloth to rotate, the wrapping cloth is pulled by the swivel ring to wrap the outer wall of the cable through the vertical block, so as to fix the cable, prevent the cable from falling off between the device and the box during use, affect the connection between the cable core and the power connection end plate, and block the gap between the cable and the pipe mouth through the wrapping of the swivel ring, so as to prevent the entry of moisture and play a role in blocking moisture.

[0017] Preferably, the inner wall of the pipe mouth is fixedly installed with a ring plate, the wrapping cloth is arranged between the two ring plates, when the wrapping cloth is pulled by the swivel ring to wrap the outer wall of the cable, the wrapping cloth wraps the cable between the two ring plates, so as to prevent dislocation of the wrapping cloth during wrapping, the wrapping cloth cannot wrap the same position of the cable, and the wrapping position of the wrapping cloth is limited.

[0018] Preferably, the outer wall of the pipe mouth is fixedly installed with a ring box, the ring box is arranged on one side of the swivel ring, the outer wall of the swivel ring is slidably connected with the outer wall of the ring box, a plurality of pressing shafts are fixedly installed on one side of the swivel ring, the outer walls of the plurality of pressing shafts are slidably connected with the inner wall of the ring box, a plurality of hollow shafts are fixedly installed on the inner wall of the ring box, the inner walls of the plurality of hollow shafts are slidably connected with shaft blocks, a return spring is arranged between the bottom of each of the plurality of shaft blocks and the bottom of each of the plurality of hollow shafts, the bottom end of each of the plurality of pressing shafts and the top end of each of the plurality of shaft blocks are obliquely slanted, and the obliquely slanted directions of the two are opposite, the bottom end of each of the plurality of pressing shafts can be slidably connected with the top end of each of the plurality of shaft blocks, when the swivel ring drives the wrapping cloth to rotate and wrap, the swivel ring drives the pressing shafts to slide in the ring box, when the pressing shafts slide in the ring box, the bottom end of the pressing shaft pushes the top end of the shaft block to extrude the return spring to slide in the hollow shaft, when the wrapping cloth completes the wrapping of the cable, at this moment, the rotation of the swivel ring is stopped, the shaft block loses the pushing of the pressing shaft, the shaft block is reset under the elastic pushing force of the return spring, the shaft block is arranged on one side of the pressing shaft to limit the pressing shaft, so as to fix the swivel ring, and the swivel ring is fixed, the oblique surface positions of the pressing shaft and the shaft block are staggered, and the swivel ring cannot be rotated back.

[0019] The beneficial effects of the application are as follows:

[0020] 1. The power construction cable connecting device, when the cable core and the power terminal plate are pressed by pressing the pressing assembly, the centering frame plate driven by the centering assembly is used to center the cable core in the power terminal plate, so that the cable core in the power terminal plate is in a straightened state, the cable core can be uniformly stressed during pressing, the conduction performance of the cable is improved, the contact between the cable core and the power terminal plate is not tight, then another cable is connected in another connecting cavity in this way, and when the two cables are connected, the conduction performance of the power terminal plate is used to realize the connection between the two cables.

[0021] 2. The power construction cable connecting device, the centering frame plate is driven by the displacement plate to slide downward, the two centering frame plates push the cable core from the top of the two sides of the cable core, when the two centering frame plates cannot move, the cable core is centered on the top of the power terminal plate, and the cable is wrapped by the pressing die frame, so that when the pressing die frame contacts the cable core and the power terminal plate, the cable in the power terminal plate is in a flat state, the cable core and the power terminal plate are tightly combined, and the virtual connection phenomenon is avoided.

[0022] 3. The power construction cable connecting device, when the two centering frame plates contact the cable core, one side of the two centering frame plates is limited by the cable core and cannot continue to move, the bottom of the push plate has a limit, at this time, the push plate is pressed upward by the limit of the displacement plate, when the inner wall of the pressing die frame contacts the cable core, the pressing handle is stopped, the push plate stops moving upward, and the device can connect various cables during connection, improving the applicability during connection.

[0023] 4. The power construction cable connecting device, when the pressing die frame completely presses the cable core and the power terminal plate, the ratchet wheel stops driving the clamping rod to move, the clamping rod is reset by the elasticity of the reset spring and re-clamped into the tooth groove in the ratchet wheel, and the ratchet wheel is fixed and locked by the limit of the limiting rod, the ratchet wheel can only rotate in one direction and cannot be reversed, the pressing die frame can be pressed between the cable core and the power terminal plate, and the pressing die frame is not affected by external ground vibration, so that the cable core and the power terminal plate can be better pressed.

[0024] 5. The power construction cable connecting device, through the rotation of the swivel, the swivel will pull the winding cloth to rotate, the winding cloth will be pulled through the vertical block to the outer wall of the cable to be wound, and the cable and the box are fixedly connected, preventing the device from falling off between the cable and the box during use, affecting the connection between the cable core and the power terminal plate, and at the same time, the cable is wound by the swivel, and the gap between the cable and the pipe opening can also be blocked, the entry of moisture is reduced, and the effect of blocking moisture is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0025] The application will be further described below with reference to the drawings.

[0026] Figure 1 is the overall view of the application;

[0027] Figure 2 is the main view of the application;

[0028] Figure 3 is the structure schematic view of the power terminal plate in the application;

[0029] Figure 4 is the structure schematic view of the crimping die frame in the application;

[0030] Figure 5 is the structure schematic view of the sliding limiting box in the application;

[0031] Figure 6 is the structure schematic view of the limiting plate in the application;

[0032] Figure 7 is the structure schematic view of the push plate in the application;

[0033] Figure 8 is the structure schematic view of the alignment frame plate in the application;

[0034] Figure 9 is the structure schematic view of the clamping rod in the application;

[0035] Figure 10 is the structure schematic view of the swivel in the application;

[0036] Figure 11 is the structure schematic view of the winding cloth in the application;

[0037] Figure 12 is the structure schematic view of the shaft block in the application.

[0038] In the diagram: 1. Box body; 2. Pressure handle; 201. Pressure plate; 3. Pipe opening; 301. Rotary ring; 302. Wrapping cloth; 303. Vertical block; 304. Ring box; 305. Ring plate; 306. Shaft block; 307. Pressure shaft; 308. Return spring; 309. Hollow shaft; 4. Dividing plate; 5. Electrical terminal plate; 6. Vertical plate; 7. Gear rack; 701. Gear; 8. Ratchet; 801. Positioning rod; 802. Limiting rod; 803. Reset spring; 804. Inner retraction rod; 9. Pressing mold frame; 10. Shifting plate; 1001. Alignment frame plate; 11. Limited slide box; 1101. Push spring; 1102. Limited slide rod; 12. Push plate; 13. Shaft; 1301. Bearing spring; 14. Limited slide plate; 15. Limiting plate. Detailed Implementation

[0039] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0040] like Figures 1 to 12 As shown in the embodiment of the present invention, a power construction cable connection device includes a housing 1. A power receiving end plate 5 is fixedly installed inside the housing 1. A dividing plate 4 is fixedly installed in the middle of the power receiving end plate 5. The dividing plate 4 divides the inner wall of the housing 1 into two independent connection cavities. The two connection cavities have the same internal structure. A crimping assembly is provided inside the connection cavity. The crimping assembly is used to crimp the cable and the power receiving end plate 5. A positioning assembly is symmetrically arranged inside the power receiving end plate 5. The positioning assembly is located on both sides of the crimping assembly. The positioning assembly includes a positioning frame plate 1001. The positioning assembly is used to drive the positioning frame plate 1001 to center and position the cable placed in the power receiving end plate 5. Pipe openings 3 are fixedly installed at both ends of the housing 1. Cable fixing assemblies are provided inside the two pipe openings 3. The cable fixing assemblies are used to fix the connection between the cable and the housing 1.

[0041] Because the cable core has a certain degree of toughness, when it is inserted into the connection device, the core may be twisted on the connection end plate. This may result in poor contact between conductors during the subsequent connection process, affecting the conduction effect between cables.

[0042] When the cable needs to be connected, the cable core is inserted into one of the connection cavities in the box 1 through the pipe opening 3, and the cable core is placed on the power terminal plate 5 in the connection cavity. By rotating the cable fixing assembly on the corresponding pipe opening 3, the cable fixing assembly fixes the cable and the box 1, avoiding the phenomenon that the cable is detached from the box 1 due to vibration during subsequent use, affecting the connection effect between the two cables. When the cable is fixed with the box 1, the pressure connection assembly is moved by pressing, and the pressure connection assembly performs pressure connection between the cable core of the cable and the power terminal plate 5. At the same time, the position adjusting assembly drives the position adjusting frame plate 1001 to centrally position the cable core placed in the power terminal plate 5, so that the cable core placed in the power terminal plate 5 is in a straightened state, which can make the cable core bear uniform stress during pressure connection, maximize the contact area between conductors, improve the conductivity of the cable, and avoid the situation that the cable core and the power terminal plate 5 are not in close contact. When the cable core is centrally positioned, the pressure connection assembly presses the cable core into the power terminal plate 5. Another cable is connected in another connection cavity in the same way. When the two cables are connected, they can conduct through the conductivity of the power terminal plate 5, thereby realizing the connection between the two cables and playing the role of connecting the cables. It should be noted that the power terminal plate 5 is made of conductive material, and the device is made of insulating material except the power terminal plate 5.

[0043] As shown in Figures 4 to 5 The pressure connection assembly includes a pressure handle 2, which is in sliding connection with the inner wall of the box 1. The bottom of the pressure handle 2 is fixedly installed with a pressure plate 201, and the bottom of the pressure plate 201 is fixedly installed with a pressure connection die holder 9. The inner wall of the box 1 is fixedly installed with two vertical plates 6, and the pressure plate 201 is placed between the two vertical plates 6, and the outer wall of the pressure plate 201 is in sliding connection with the inner sides of the two vertical plates 6.

[0044] When the cable fixing assembly fixes the cable and the box 1, the cable core is placed on the top of the power terminal plate 5, and then the pressure handle 2 is pressed down. When the pressure handle 2 moves down, the pressure handle 2 drives the pressure connection die holder 9 to move down between the two vertical plates 6 through the pressure plate 201. The pressure connection die holder 9 gradually approaches the cable core in the power terminal plate 5. When the bottom end of the pressure connection die holder 9 is inserted into the power terminal plate 5, the inner wall of the pressure connection die holder 9 contacts the cable core. By pressing the pressure handle 2, the cable core is connected between the pressure connection die holder 9 and the power terminal plate 5, thereby playing the role of connecting the cable core and the power terminal plate 5.

[0045] As shown in Figures 6 to 8As shown, the position correcting assembly further comprises a displacement plate 10, the bottom of the displacement plate 10 is fixedly connected with the top end of the position correcting frame plate 1001, the top of the power receiving end plate 5 is fixedly installed with a limiting sliding plate 14, the top of the limiting sliding plate 14 is slidably connected with the bottom of the position correcting frame plate 1001, the outer wall of the limiting sliding plate 14 is fixedly installed with a limiting plate 15, the top end of the limiting plate 15 is attached to one side of the displacement plate 10, the top of the power receiving end plate 5 is fixedly installed with two limiting sliding boxes 11, the limiting sliding plate 14 is fixedly installed between the two limiting sliding boxes 11, the two ends of the position correcting frame plate 1001 are slidably connected with the inner walls of the two limiting sliding boxes 11, and the outer wall of the position correcting frame plate 1001 can be slidably connected with the outer wall of the crimping die holder 9;

[0046] When the pressing plate 201 drives the crimping die holder 9 to move downward, the displacement plate 10 is pushed to move, when the displacement plate 10 moves, the displacement plate 10 drives the position correcting frame plate 1001 to slide downward by the limiting setting of the limiting plate 15 and the limiting setting of the limiting sliding box 11, when the position correcting frame plate 1001 contacts the core of the cable, the two position correcting frame plates 1001 push the core to move from the two sides of the core, since the two position correcting frame plates 1001 are arranged on the two sides of the power receiving end plate 5, the two position correcting frame plates 1001 synchronously tilt and slide downward when moving downward, therefore, when the two position correcting frame plates 1001 cannot move, at this time, the two position correcting frame plates 1001 correct the position of the core of the cable on the top of the power receiving end plate 5, and the crimping die holder 9 is used to press and move the cable, so that when the crimping die holder 9 contacts the cable to crimp the core of the cable and the power receiving end plate 5, the cable placed in the power receiving end plate 5 is in a straight state, the core of the cable is tightly combined with the power receiving end plate 5, the virtual connection phenomenon is avoided, the core of the cable is straightened after being pressed, the core of the cable and the power receiving end plate 5 directly form a stable overall structure, the anti-pulling ability is stronger, the connection is less loose due to vibration or external force, the function of straightening the core is achieved, and the position correcting assembly can correct the position of the core of the cable by moving the position correcting frame plate 1001 driven by the limiting sliding box 11, and can correct the position of the core of the cable of different specifications.

[0047] As shown in Figures 6 to 7 The inner walls of the two limiting sliding boxes 11 are symmetrically fixedly installed with limiting sliding rods 1102, the inner walls of the two ends of the position correcting frame plate 1001 are slidably connected with the outer walls of the four limiting sliding rods 1102, and the two ends of the limiting sliding box 11 and the inner walls of the two limiting sliding boxes 11 are symmetrically provided with push position springs 1101, and the four push position springs 1101 are arranged outside the four limiting sliding rods 1102.

[0048] When the displacement plate 10 drives the alignment frame plate 1001 to move downward, the two ends of the alignment frame plate 1001 will slide in the slip limiting box 11, and the two ends of the alignment frame plate 1001 will extrude the push spring 1101 to slide downward on the slip limiting rod 1102, so that the alignment frame plate 1001 approaches the cable core, and through the arrangement of the push spring 1101, when the device is not used, the two push springs 1101 are always placed above the side of the power connection end plate 5, avoiding that the two push springs 1101 are directly placed in the inside of the power connection end plate 5 without support, affecting the insertion of the cable core, and supporting the push spring 1101.

[0049] As shown in Figures 6 to 7 The inner wall of the pressing plate 201 is slidably connected with the shaft rod 13, the bottom of the shaft rod 13 is fixedly installed with the push plate 12, the bottom of the push plate 12 can be in contact with the top of the displacement plate 10, and the top of the push plate 12 is arranged with the pressure bearing spring 1301 between the bottom of the pressing plate 201, the pressure bearing spring 1301 is arranged outside the shaft rod 13, and the outer wall of the push plate 12 can be slidably connected with the outer wall of the crimping die frame 9.

[0050] When the pressing handle 2 is pressed to drive the crimping die frame 9 to move downward through the pressing plate 201, the pressing plate 201 drives the push plate 12 to move downward through the elastic arrangement of the pressure bearing spring 1301, the push plate 12 extrudes the displacement plate 10 to slide downward between the slip limiting boxes 11, so as to push the alignment frame plate 1001 to center and align the cable core, and the displacement plate 10 is moved, when the two alignment frame plates 1001 contact the cable core, at this time, one side of the two alignment frame plates 1001 is limited by the cable core and cannot continue to move, so the displacement plate 10 cannot be pushed, the bottom of the push plate 12 has a limit, at this time, the pressing plate 201 continues to move downward, the push plate 12 extrudes the pressure bearing spring 1301 to move upward through the limit of the displacement plate 10, when the inner wall of the crimping die frame 9 contacts the cable core, at this time, the pressing of the pressing handle 2 is stopped, and the push plate 12 stops moving upward, and the arrangement is because the size of the cable core is unknown, and the arrangement can make the device connect various cables during connection, improve the applicability during connection, and it is to be explained that the distance between the arrangement position of the crimping die frame 9 and the center of the power connection end plate 5 is greater than the distance between the two alignment frame plates 1001 and the center of the power connection end plate 5.

[0051] As shown in Figures 3 to 4As shown, the top of the pressing plate 201 is symmetrically fixed with a toothed rod 7, the outer wall of the two toothed rods 7 is slidably connected with the inner wall of the vertical plate 6, the outer wall of the vertical plate 6 is symmetrically rotatably connected with a gear 701, the teeth on the two toothed rods 7 are respectively engaged with the teeth on the two gears 701, the two gears 701 are symmetrically fixed with a ratchet wheel 8, the outer part of the vertical plate 6 is symmetrically provided with a self-locking assembly, and the two self-locking assemblies are respectively arranged on one side of the two ratchet wheels 8.

[0052] When the pressing plate 201 moves downward, the pressing plate 201 drives the toothed rod 7 to move downward, the toothed rod 7 drives the gear 701 to rotate when moving downward, the gear 701 drives the ratchet wheel 8 to rotate, when the crimping die holder 9 completely presses the cable core into contact with the power terminal plate 5, at this time, the pressing plate 201 is stopped from moving downward, the self-locking assembly performs self-locking operation on the ratchet wheel 8, the pressing plate 201 fixes the position of the ratchet wheel 8 through the self-locking of the self-locking assembly, and the crimping die holder 9 presses the cable core and the power terminal plate 5 into full contact, thereby fixing the position of the crimping die holder 9.

[0053] As shown in the figure, Figure 9 The self-locking assembly comprises a limiting rod 802 fixedly installed on the outer wall of the vertical plate 6, a clamping rod 801 rotatably connected with the outer wall of the vertical plate 6, an inwardly retracting rod 804 fixedly installed on the bottom of the clamping rod 801, the outer wall of the inwardly retracting rod 804 being slidably connected with the inner wall of the vertical plate 6, a return spring 803 arranged between the bottom of the clamping rod 801 and the outer wall of the vertical plate 6, the return spring 803 being arranged outside the inwardly retracting rod 804, and one end of the clamping rod 801 being capable of being clamped with a plurality of tooth grooves on the ratchet wheel 8;

[0054] When the gear 701 drives the ratchet wheel 8 to rotate, the tooth grooves on the ratchet wheel 8 push the clamping rod 801 to move, the clamping rod 801 presses the return spring 803 to drive the inwardly retracting rod 804 to rotate on the vertical plate 6, when the crimping die holder 9 completely presses the cable core into contact with the power terminal plate 5, at this time, the pressing plate 201 is stopped from moving downward, the pressing plate 201 stops driving the toothed rod 7 to move downward, the ratchet wheel 8 stops rotating, the ratchet wheel 8 stops pushing the clamping rod 801 to move, the clamping rod 801 is re-clamped into the tooth grooves in the ratchet wheel 8 through the elastic return of the return spring 803, and the return spring 803 cooperates with the limiting of the limiting rod 802 to fix and lock the ratchet wheel 8, thereby fixing and locking the crimping die holder 9, the ratchet wheel 8 can only rotate in one direction and cannot be reversed through the unique tooth groove arrangement of the ratchet wheel 8 and the clamping and fixing of the clamping rod 801, and the crimping die holder 9 can better perform crimping operation on the cable core and the power terminal plate 5 when the crimping die holder 9 is pressed between the cable core and the power terminal plate 5, and the crimping die holder 9 will not be affected by external ground vibration and other factors.

[0055] As shown in the figure, Figures 10 to 11As shown, the fixed cable assembly includes a swivel 301, the inner wall of the pipe 3 is fixedly installed with a vertical block 303, the inner wall of the pipe 3 is fixedly installed with a wrapping cloth 302, the outer wall of the wrapping cloth 302 is slidably connected with the inner wall of the vertical block 303, the outer wall of the wrapping cloth 302 can be in contact with the outer wall of the cable, and one end of the wrapping cloth 302 is fixedly connected with the inner wall of the swivel 301;

[0056] When the core of the cable is inserted into one of the connection cavities in the box body 1 through the pipe 3, the core is placed on the power connection end plate 5 in the connection cavity, and then the swivel 301 is rotated to rotate the wrapping cloth 302, and the wrapping cloth 302 is wound around the outer wall of the cable through the pulling of the swivel 301, thereby fixing the cable, preventing the cable from falling off between the device and the box body 1 during use, and affecting the connection between the cable core and the power connection end plate 5. At the same time, the wrapping of the cable by the swivel 301 can also block the gap between the cable and the pipe 3, reduce the entry of moisture, and play a role in blocking moisture. It should be noted that the wrapping cloth 302 is made of a material with water resistance. The example length of the wrapping cloth 302 in this scheme is two turns, and the specific length of the wrapping cloth 302 needs to be set according to the actual application scenario. The wrapping cloth 302 is provided with an elastic ring piece.

[0057] As shown in Figures 10 to 11 , the inner wall of the pipe 3 is fixedly installed with a ring plate 305, and the wrapping cloth 302 is placed between the two ring plates 305.

[0058] When the wrapping cloth 302 is wound around the outer wall of the cable through the pulling of the swivel 301, the wrapping cloth 302 is wound around the cable between the two ring plates 305, preventing the wrapping cloth 302 from dislocating during winding. The wrapping cloth 302 cannot be wound around the same position of the cable, thereby limiting the winding position of the wrapping cloth 302.

[0059] As shown in Figures 10 to 12 , the outer wall of the pipe 3 is fixedly installed with a ring box 304, the ring box 304 is placed on one side of the swivel 301, and the outer wall of the swivel 301 is slidably connected with the outer wall of the ring box 304. A plurality of pressing shafts 307 are fixedly installed on one side of the swivel 301, the outer walls of the plurality of pressing shafts 307 are slidably connected with the inner wall of the ring box 304, a plurality of hollow shafts 309 are fixedly installed on the inner wall of the ring box 304, the inner walls of the plurality of hollow shafts 309 are slidably connected with shaft blocks 306, a return spring 308 is arranged between the bottom of each of the plurality of shaft blocks 306 and the bottom of each of the plurality of hollow shafts 309, the bottom end of each of the plurality of pressing shafts 307 and the top end of each of the plurality of shaft blocks 306 are inclined sliding surfaces, and the opening directions of the two are opposite, and the bottom end of each of the plurality of pressing shafts 307 is slidably connected with the top end of each of the plurality of shaft blocks 306.

[0060] When the rotating ring 301 drives the winding cloth 302 to rotate and wind, the rotating ring 301 drives the pressing shaft 307 to slide in the ring box 304, when the pressing shaft 307 slides in the ring box 304, the bottom end of the pressing shaft 307 pushes the top end of the shaft block 306 to extrude the return spring 308 to slide in the hollow shaft 309, when the winding cloth 302 completes winding on the cable, at this time, the rotation of the rotating ring 301 is stopped, the shaft block 306 loses the pushing of the pressing shaft 307, the shaft block 306 resets under the elastic pushing force of the return spring 308, the shaft block 306 is positioned on one side of the pressing shaft 307 to limit it, thereby fixing the rotating ring 301, which plays a role of fixing the rotating ring 301. By staggered arrangement of the inclined surfaces on the pressing shaft 307 and the shaft block 306, the phenomenon of reverse rotation of the rotating ring 301 can be prevented.

[0061] Working principle: when the cable needs to be connected, the core of the cable is inserted into one of the connection cavities in the box body 1 through the pipe opening 3, the core is placed on the power terminal plate 5 in one of the connection cavities, the cable and the box body 1 are fixed by rotating the cable fixing assembly on the corresponding pipe opening 3, which avoids the phenomenon that the cable is separated from the box body 1 due to vibration during subsequent use, affecting the connection effect between the two cables, when the cable is fixed with the box body 1, the pressure welding assembly is moved by pressing, the pressure welding assembly performs pressure welding between the core of the cable and the power terminal plate 5, at the same time, the position correcting assembly drives the position correcting frame plate 1001 to center the cable core placed in the power terminal plate 5, so that the cable core placed in the power terminal plate 5 is in a straightened state, which can make the core bear uniform stress during pressure welding, maximize the contact area between conductors, improve the conduction performance of the cable, and avoid the situation that the core and the power terminal plate 5 do not contact tightly, when the core centering is completed, the pressure welding assembly pressure welds the core of the cable into the power terminal plate 5, another cable is connected in another connection cavity in the same way, when the two cables are connected, the conduction performance of the power terminal plate 5 can realize conduction between them, thereby realizing the connection between the two cables, which plays a role of connecting the cables;

[0062] When the cable fixing assembly drives the cable and the box 1 to be fixed, the core of the cable is placed on the top of the power connection end plate 5, and then the pressing handle 2 is pressed to move down. When the pressing handle 2 moves down, the pressing handle 2 drives the crimping die frame 9 to move down between the two vertical plates 6. The crimping die frame 9 slowly approaches the cable core in the power connection end plate 5. When the bottom end of the crimping die frame 9 is inserted into the power connection end plate 5, the inner wall of the crimping die frame 9 contacts the core of the wire at this time. By pressing the pressing handle 2, the cable core is connected between the crimping die frame 9 and the power connection end plate 5, which plays a role in connecting the cable core and the power connection end plate 5.

[0063] When the pressing plate 201 drives the crimping die frame 9 to move down, the displacement plate 10 is pushed to move. When the displacement plate 10 moves, the displacement plate 10 drives the position correcting frame plate 1001 to slide to the side and down, through the limiting setting of the limiting plate 15 and the limiting setting of the limiting sliding box 11. When the position correcting frame plate 1001 contacts the core of the cable, the two position correcting frame plates 1001 push the core of the cable to move from the two sides above. Since the two position correcting frame plates 1001 are arranged on the two sides above the power connection end plate 5, the two position correcting frame plates 1001 move downward synchronously and obliquely downward. When the two position correcting frame plates 1001 cannot move, the two position correcting frame plates 1001 will center the core of the cable on the top of the power connection end plate 5 at this time. In combination with the crimping die frame 9, the cable core is wrapped and pressed, so that when the crimping die frame 9 contacts the cable core and the power connection end plate 5, the cable core placed in the power connection end plate 5 is in a straight state, which ensures that the cable core and the power connection end plate 5 are tightly combined and avoids the generation of loose connection. At the same time, the straightened cable core will form a stable overall structure with the power connection end plate 5 after crimping, which has stronger anti-pulling ability and reduces the connection looseness caused by vibration or external force. The position correcting frame plate 1001 moves to the cable core through the limiting sliding box 11, which can also correct the position of the cable core of different specifications;

[0064] When the displacement plate 10 drives the position correcting frame plate 1001 to move down, the two ends of the position correcting frame plate 1001 slide in the limiting sliding box 11. The two ends of the position correcting frame plate 1001 press the pushing spring 1101 to slide downward on the limiting sliding rod 1102, so that the position correcting frame plate 1001 approaches the cable core. Through the arrangement of the pushing spring 1101, when the device is not used, the two pushing springs 1101 are always placed on the side above the power connection end plate 5, which avoids that the two pushing springs 1101 are directly placed in the power connection end plate 5 without support, which affects the insertion of the cable core. The pushing spring 1101 plays a role in supporting the pushing spring 1101.

[0065] When the pressing handle 2 is pressed to drive the pressing plate 201 to drive the pressing die frame 9 to move downward, the pressing plate 201 drives the push plate 12 to move downward together through the elasticity of the pressure bearing spring 1301, the push plate 12 extrudes the displacement plate 10 to slide downward between the limited slip boxes 11, thereby pushing the centering frame plate 1001 to center the cable core, and the displacement plate 10 is pushed to move, when the two centering frame plates 1001 contact the cable core, at this time, one side of the two centering frame plates 1001 is limited by the cable core and cannot continue to move, so the displacement plate 10 cannot be pushed, and the bottom of the push plate 12 has a limit, at this time, the pressing plate 201 continues to move downward, the push plate 12 extrudes the pressure bearing spring 1301 to move upward through the limit of the displacement plate 10, when the inner wall of the pressing die frame 9 contacts the cable core, at this time, the pressing of the pressing handle 2 is stopped, and the push plate 12 stops moving upward, and the device is set in this way because the size of the cable core is unknown, and the device can be connected to various cables during connection, thereby improving the applicability during connection;

[0066] When the pressing plate 201 moves downward, the pressing plate 201 drives the tooth rod 7 to move downward, the tooth rod 7 drives the gear 701 to rotate when moving downward, the gear 701 drives the ratchet wheel 8 to rotate, when the pressing die frame 9 completely presses the cable core to contact the power terminal plate 5, at this time, the pressing plate 201 is stopped, the self-locking assembly self-locks the ratchet wheel 8, the pressing plate 201 is positionally fixed through the self-locking of the ratchet wheel 8, and the pressing die frame 9 presses the cable core and the power terminal plate 5 to fully contact, thereby fixing the position of the pressing die frame 9;

[0067] When the gear 701 drives the ratchet wheel 8 to rotate, the teeth groove on the ratchet wheel 8 pushes the clamping rod 801 to move, the clamping rod 801 extrudes the return spring 803 to drive the retraction rod 804 to rotate on the vertical plate 6, when the pressing die frame 9 completely presses the cable core to contact the power terminal plate 5, at this time, the pressing plate 201 is stopped, the pressing plate 201 stops driving the tooth rod 7 to move downward, the ratchet wheel 8 stops rotating, the ratchet wheel 8 stops pushing the clamping rod 801 to move, the clamping rod 801 is re-clamped into the teeth groove in the ratchet wheel 8 through the elastic return of the return spring 803, and the return spring 803 cooperates with the limiting of the limiting rod 802, thereby self-locking the ratchet wheel 8, thereby self-locking and fixing the pressing die frame 9, through the unique teeth groove setting of the ratchet wheel 8 and the clamping and fixing of the clamping rod 801, the ratchet wheel 8 can only rotate in one direction and cannot be reversed, and the pressing die frame 9 can be better pressed between the cable core and the power terminal plate 5 through this setting;

[0068] When the cable core is inserted into one of the connecting cavities in the box 1 through the pipe opening 3, the cable core is placed on the power connection end plate 5 in the connecting cavity, and then the rotating ring 301 is rotated to pull the winding cloth 302 to rotate, and the winding cloth 302 is wound on the outer wall of the cable through the pulling of the rotating ring 301, which plays a role in fixing the cable to prevent the cable from falling off between the device and the box 1 during use, affecting the connection between the cable core and the power connection end plate 5. At the same time, the winding of the cable by the rotating ring 301 can also block the gap between the cable and the pipe opening 3, reduce the entry of moisture, and play a role in blocking moisture;

[0069] When the winding cloth 302 is wound on the outer wall of the cable through the pulling of the rotating ring 301, the winding cloth 302 is wound on the cable between the two ring plates 305 to prevent dislocation of the winding cloth 302 during winding, and the winding cloth 302 cannot be wound on the same position of the cable, which plays a role in limiting the winding position of the winding cloth 302.

[0070] When the rotating ring 301 rotates and winds the winding cloth 302, the rotating ring 301 drives the pressing shaft 307 to slide in the ring box 304, and when the pressing shaft 307 slides in the ring box 304, the bottom end of the pressing shaft 307 pushes the top end of the shaft block 306 to extrude the return spring 308 to slide in the hollow shaft 309. When the winding cloth 302 completes winding on the cable, the rotation of the rotating ring 301 is stopped, the shaft block 306 loses the pushing of the pressing shaft 307, and the shaft block 306 is reset under the elastic pushing force of the return spring 308, and the shaft block 306 is positioned on one side of the pressing shaft 307 to fix the rotating ring 301, which plays a role in fixing the rotating ring 301. The inclined surfaces on the pressing shaft 307 and the shaft block 306 are staggered, which can prevent the rotating ring 301 from rotating back.

[0071] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A power construction cable connection device, characterized by: The utility model provides a cable connection device, including the box, the inside fixed mounting of box is connected to the electricity end plate, the middle position fixed mounting of electricity end plate is the partition board, the inside wall of box is divided into two independent connection cavities with the partition board, the inside structure of two connection cavities is same, and the inside of connection cavity is provided with the pressure contact subassembly, and the pressure contact subassembly is used for carrying out pressure contact between cable and electricity end plate, and the inside symmetry of electricity end plate is provided with the school position subassembly, and the school position subassembly is placed in the two sides of pressure contact subassembly, and the school position subassembly includes school position frame board, and the school position subassembly is used for driving school position frame board to carry out the central school position of the cable in the electricity end plate, and the both ends of box are fixedly installed with the pipe mouth, and the inside of two pipe mouths is provided with the cable fixing subassembly, and the cable fixing subassembly is used for carrying out fixed connection between cable and box, The pressure contact subassembly includes a pressure handle, which is in sliding connection with the inner wall of the box. The bottom of the pressure handle is fixedly installed with a pressing plate. The bottom of the pressing plate is fixedly installed with a pressure contact die holder. The inner wall of the box is fixedly installed with vertical plates in a symmetrical manner. The pressing plate is positioned between the two vertical plates, and the outer wall of the pressing plate is in sliding connection with the inner sides of the two vertical plates. The school position subassembly further includes a displacement plate, the bottom of which is fixedly connected with the top end of the school position frame board. The top of the electricity end plate is fixedly installed with a limiting sliding plate. The top of the limiting sliding plate is in sliding connection with the bottom of the school position frame board. The outer wall of the limiting sliding plate is fixedly installed with a limiting plate. The top end of the limiting plate is in abutment with one side of the displacement plate. The top of the electricity end plate is fixedly installed with two limiting sliding boxes. The limiting sliding plate is fixedly installed between the two limiting sliding boxes. The two ends of the school position frame board are in sliding connection with the inner walls of the two limiting sliding boxes. The outer wall of the school position frame board is in sliding connection with the outer wall of the pressure contact die holder.

2. An electrical power construction cable connection device according to claim 1, characterised in that: The inner walls of the two limiting sliding boxes are fixedly installed with limiting sliding rods in a symmetrical manner. The inner walls of the two ends of the school position frame board are in sliding connection with the outer walls of the four limiting sliding rods in pairs. Pushing springs are symmetrically arranged between the two ends of the limiting sliding plate and the inner walls of the two limiting sliding boxes. The four pushing springs are positioned outside the four limiting sliding rods.

3. An electrical power construction cable connection device according to claim 2, characterised in that: The inner wall of the pressing plate is in sliding connection with a shaft rod. The bottom of the shaft rod is fixedly installed with a push plate. The bottom of the push plate can be in abutment with the top of the displacement plate. A pressure bearing spring is arranged between the top of the push plate and the bottom of the pressing plate. The pressure bearing spring is positioned outside the shaft rod. The outer wall of the push plate is in sliding connection with the outer wall of the pressure contact die holder.

4. An electrical power construction cable connection device according to claim 3, characterised in that: The top of the pressing plate is fixedly installed with tooth rods in a symmetrical manner. The outer walls of the two tooth rods are in sliding connection with the inner walls of the vertical plates. The outer wall of the vertical plate is rotatably connected with gears in a symmetrical manner. The teeth of the two tooth rods are in meshing engagement with the teeth of the two gears. A ratchet wheel is fixedly installed between the two gears in a symmetrical manner. The outer part of the vertical plate is provided with self-locking assemblies in a symmetrical manner. The two self-locking assemblies are positioned on one side of the two ratchet wheels.

5. An electrical power construction cable connection device according to claim 4, characterised in that: The self-locking assembly includes a limiting rod, which is fixedly installed on the outer wall of the vertical plate. The outer wall of the vertical plate is rotatably connected with a clamping rod. The bottom of the clamping rod is fixedly installed with an inwardly retracting rod. The outer wall of the inwardly retracting rod is in sliding connection with the inner wall of the vertical plate. A return spring is arranged between the bottom of the clamping rod and the outer wall of the vertical plate. The return spring is positioned outside the inwardly retracting rod. One end of the clamping rod can be in clamping engagement with a plurality of tooth slots on the ratchet wheel.

6. An electrical power construction cable connection device according to claim 5, characterised in that: The fixed cable assembly comprises a swivel, a vertical block fixedly installed on the inner wall of the pipe mouth, a winding cloth fixedly installed on the inner wall of the pipe mouth, the outer wall of the winding cloth being in sliding connection with the inner wall of the vertical block, the outer wall of the winding cloth being capable of being in close contact with the outer wall of the cable, and one end of the winding cloth being fixedly connected with the inner wall of the swivel.

7. An electrical power construction cable connection device according to claim 6, characterised in that: The inner wall of the pipe mouth is symmetrically fixedly installed with ring plates, and the winding cloth is arranged between the two ring plates.

8. An electrical power construction cable connection device according to claim 7, characterised in that: The outer wall of the pipe mouth is fixedly installed with a ring box, the ring box is arranged on one side of the swivel, the outer wall of the swivel is in sliding connection with the outer wall of the ring box, a plurality of pressing shafts are fixedly installed on one side of the swivel, the outer walls of the plurality of pressing shafts are in sliding connection with the inner wall of the ring box, a plurality of hollow shafts are fixedly installed on the inner wall of the ring box, the inner walls of the plurality of hollow shafts are in sliding connection with shaft blocks, a return spring is arranged between the bottom of each of the plurality of shaft blocks and the bottom of each of the plurality of hollow shafts, the bottom end of each of the plurality of pressing shafts and the top end of each of the plurality of shaft blocks are formed as inclined sliding surfaces, the opening directions of the two are opposite, and the bottom end of each of the plurality of pressing shafts is in sliding connection with the top end of each of the plurality of shaft blocks.

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