A line conductor connecting fitting with self-locking clamping function

Abstract

The utility model discloses a kind of line wire connecting hardware with self-locking clamping function, including base, fixed with side clamp seat on base, cover plate is installed on the side of side clamp seat away from base, main clamp seat is clamped and slidably installed between cover plate and base, main clamp seat cooperates with side clamp seat and clamps line;Main clamp seat end away from side clamp seat is provided with main clamp seat bevel, main clamp seat bevel is attached with the main wedge block main wedge block bevel, main wedge block is installed on base by locking bolt;Side clamp slide groove is provided on side clamp seat, side clamp slide groove is assembled with sub wedge block, sub wedge block bevel is provided on sub wedge block, sub wedge block bevel is attached with the sub wedge block sub wedge block bevel, sub wedge block side away from sub wedge block bevel is compressed with line;End of sub wedge block is directly or indirectly attached or contacted after passing through cover plate, one end of tension arm is hinged with the pin seat of cover plate, the other end of tension arm is fixed with the line connected with not being loaded into base by tension cable.

Description

Technical Field

[0001] This invention relates to electrical conductor connection fittings, and in particular to a line conductor connection fitting with a self-locking clamping function. Background Technology

[0002] Conductor connectors, as key connecting components in distribution network lines, serve a dual purpose of electrical conduction and mechanical anchoring, and their performance directly determines the reliability of line operation. Currently, traditional conductor connectors used in distribution network lines are exposed to complex outdoor environments for extended periods, and due to limitations in their design and materials, they suffer from several prominent problems: 1. Insufficient contact reliability: Loose bolts and fretting wear lead to increased contact resistance, causing the joint to overheat or even burn out.

[0003] 2. Poor environmental adaptability: In environments with high salt spray, heavy ice, and large temperature differences, it is prone to electrochemical corrosion and preload reduction due to thermal expansion and contraction.

[0004] 3. Unstable installation quality: Traditional crimping or bolt fastening methods rely on specialized equipment and skilled workers, resulting in long construction cycles and quality that is greatly affected by human factors.

[0005] According to industry statistics, tripping accidents caused by faulty conductor connection hardware account for 20% to 30% of all line faults. This not only increases the manpower and material costs of power grid operation and maintenance, but also seriously affects the normal electricity use of residents and businesses. Improved products of traditional hardware only make partial optimizations and do not solve the core pain points from the perspective of structural and functional integration.

[0006] Therefore, developing a new type of conductor connection hardware that is highly reliable, weather-resistant, and can stably lock conductors has become an urgent need to improve the safe operation level of power distribution lines and reduce the failure rate, and it is also an inevitable trend for the technological upgrading of the power fittings industry. Summary of the Invention

[0007] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a wire connection hardware with a self-locking clamping function, which can provide pre-tightening force through the tension of the wire, thereby effectively improving the anti-loosening performance.

[0008] To achieve the above objectives, the present invention provides a wire connection fitting with a self-locking clamping function, comprising a base, a side clamp fixed on the base, a cover plate installed on the side of the side clamp away from the base, a main clamp engaged with the cover plate and slidably mounted thereon, the main clamp and the side clamp cooperating to clamp the wire; a main clamp inclined surface is provided on the end of the main clamp away from the side clamp, the main clamp inclined surface abutting against the inclined surface of the main wedge block, the main wedge block being mounted on the base by locking bolts; The side clamp seat is provided with a side clamp slide groove, which is assembled with a secondary wedge block. The secondary wedge block is provided with a secondary wedge block inclined surface. The secondary wedge block inclined surface fits against the secondary clamp block inclined surface. The side of the secondary clamp block away from the secondary clamp block inclined surface is pressed against the line. One end of the sub-wedge block protrudes from the cover plate and is directly or indirectly attached to or in contact with the tension arm. One end of the tension arm is hinged to the pin seat of the cover plate, and the other end of the tension arm is connected and fixed to the line not installed in the base through the tension cable.

[0009] As a further improvement of the present invention, a cable shaft is installed on the tension arm, one end of the cable shaft is assembled with the tension cable, the other end of the tension cable is connected to the tension ring, and the tension ring is fitted and fixed on the line that is not installed in the base.

[0010] As a further improvement of the present invention, a secondary stop tooth groove is provided on the side surface of the secondary wedge block away from the inclined surface of the secondary wedge block. The secondary stop tooth groove is engaged with the secondary locking tooth. The secondary locking tooth is provided on the secondary lock seat. The secondary lock seat is slidably assembled with the secondary lock seat groove. The secondary lock seat groove is provided on the side clamping seat. A secondary lock spring is installed in the secondary lock seat groove. The two ends of the secondary lock spring are respectively pressed against the inner wall of the secondary lock seat groove and the end face of the secondary lock seat away from the secondary locking tooth.

[0011] As a further improvement of the present invention, the cover plate is provided with two pairs of pin seats. One pair of pin seats is hinged to the tension arm via tension arm pins, and the other pair of pin seats is hinged to one end of the pressure plate via pressure plate pins. The pressure plate is pressed against the secondary wedge block, and the tension arm is pressed against the pressure plate. A spring sheet is installed on the cover plate. The spring sheet is elastic and one end is pressed against the pressure plate so that the pressure plate does not contact the sub-wedge block in the initial state.

[0012] As a further improvement of the present invention, the secondary stop tooth groove includes a secondary lock inclined surface and a secondary lock stopping surface. The secondary lock tooth is provided with a secondary lock tooth inclined surface and a secondary lock tooth stopping surface at the corresponding positions of the secondary lock inclined surface and the secondary lock stopping surface. The secondary lock tooth stopping surface is in contact with the secondary lock stopping surface, and the secondary lock inclined surface can be in contact with the secondary lock tooth inclined surface.

[0013] As a further improvement of the present invention, the secondary clamping block is also provided with a side slider, which engages with and slides with a side sliding groove, and the side sliding groove is provided on the side clamping seat.

[0014] As a further improvement of the present invention, a main wedge block locking groove is provided at each of the two end faces of the main wedge block, and the main wedge block locking groove can be engaged with the main locking tooth; the main locking tooth is provided on the main lock seat, the main lock seat is engaged and slidably installed in the end seat groove of the end seat, and the end seat is installed on the base; a main locking spring is installed in the end seat groove, and the two ends of the main locking spring are respectively pressed against the inner wall of the end seat groove and the end face of the main lock seat away from the main locking tooth.

[0015] As a further improvement of the present invention, the main wedge block locking groove includes a main groove inclined surface and a main groove locking surface. The main locking teeth are also provided with a main locking tooth inclined surface and a main locking tooth locking surface. The main locking tooth locking surface is in close contact with the main groove locking surface to lock the main wedge block. The main locking tooth inclined surface can cooperate with the main groove inclined surface, so that when the main groove inclined surface presses the main locking tooth inclined surface, it can press the main lock seat away from the main wedge block to overcome the elastic force of the main lock spring and push the main lock seat to move.

[0016] As a further improvement of the present invention, the main wedge block is also assembled with one end of the pull shaft, and the other end of the pull shaft passes through the main wedge block, the base, and the bushing and is then assembled with the cam sleeve. The bushing is installed and fixed on the base, and a locking sleeve is fitted on the outside of the bushing. The cam sleeve cannot be rotated relative to the pull shaft during assembly. The cam sleeve is provided with a first cam surface and a second cam surface respectively, and the locking sleeve is provided with a first locking surface and a second locking surface respectively that fit with the first cam surface and the second cam surface. The first cam surface and the second cam surface are at different heights on the axis of the cam sleeve. A locking sleeve block is installed on the locking sleeve, and the locking sleeve block is assembled with one end of the cable, while the other end of the cable is assembled and fixed with the line.

[0017] As a further improvement of the present invention, there are two end seats, which are respectively installed on both sides of the base. Figure 7 (on the left and right sides), the main clamping seat is engaged and slidably installed in the groove formed by the base, cover plate and two end seats.

[0018] The beneficial effects of this invention are: This invention utilizes the vibration (swing) of the circuit relative to the base to pull the tension arm, applying an impact force to the secondary wedge block to move it towards the secondary clamping block. This increases the clamping force on the circuit, achieving a tighter clamping effect with each impact. Furthermore, the secondary wedge block cooperates with the secondary locking seat, preventing it from moving away from the base. This effectively ensures the increased clamping force on the secondary wedge block with each impact, resulting in a more stable clamping effect.

[0019] This invention also utilizes the axial movement of the circuit (sliding relative to the base along its length) to rotate the locking sleeve via a cable. The locking sleeve, in conjunction with the cam sleeve, pulls the main wedge block towards the base, driving the main clamping seat to move towards the side clamping seat to increase clamping force, reducing the probability of the circuit loosening further and improving stability during use. The main wedge block is also locked by the main locking seat, preventing it from moving away from the base and maintaining the displacement of each movement, thereby maintaining the increased clamping force each time and more effectively preventing circuit loosening. Furthermore, in addition to the traditional screw and nut fixing method, the main wedge block is further locked by the main locking seat. Even if the screw and nut loosen, the clamping force will not rapidly decrease or disappear, providing a double-safety design that can meet the needs of scenarios requiring high clamping force.

[0020] In addition, in actual use, an insulating protective cover can be fitted over the entire hardware. The protective cover can be fixed on the line to prevent foreign objects from entering the clamped part of the wire and affecting its use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the usage state of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the usage state of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the usage state of the present invention. Figure 3 ; Figure 4 yes Figure 3 Sectional view of AA; Figure 5 yes Figure 3 BB section view; Figure 6 yes Figure 3 CC section view; Figure 7 yes Figure 4 DD section view; Figure 8 yes Figure 5 EE section view; Figure 9 yes Figure 4 Enlarged view at F1; Figure 10 yes Figure 5 Enlarged view at F2; Figure 11 yes Figure 5 Enlarged view at F3; Figure 12 This is a structural schematic diagram of this embodiment. Figure 1 ; Figure 13This is a schematic diagram of the structure after removing the tension arm 340 and one of the cover plates 120 in this embodiment. Figure 1 ; Figure 14 This is a schematic diagram of the structure after removing the tension arm 340 and one of the cover plates 120 in this embodiment. Figure 2 ; Figure 15 Is Figure 14 A structural diagram after removing cable 350 and side plate 131 from the original structure; Figure 16 This is a partial structural diagram of this embodiment. Figure 1 ; Figure 17 This is a partial structural diagram of this embodiment. Figure 2 ; Figure 18 This is a structural diagram of the secondary clamping block 150, the main wedge block 710, and the secondary wedge block 730. Figure 1 ; Figure 19 This is a structural diagram of the secondary clamping block 150, the main wedge block 710, and the secondary wedge block 730. Figure 2 ; Figure 20 This is a structural diagram of the secondary clamping block 150, the main wedge block 710, and the secondary wedge block 730. Figure 3 . Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] See Figures 1-20 The wiring connector of this embodiment includes a base 110, on which a side clamp 140 and an end plate 130 are fixed. A cover plate 120 is installed on the side of the side clamp 140 and the end plate 130 away from the base 110. Figure 5 Located above the base 110), the cover plate 120 is engaged with and slidably mounted on the base 110, and the main clamp 160 cooperates with the side clamp 140 to clamp the line 01. In this embodiment, there are two cover plates 120, which are respectively installed on both sides of the main wedge block 710.

[0024] The main clamp 160 has a main clamp inclined surface 161 at the end away from the side clamp 140. The main clamp inclined surface 161 fits against the main wedge block inclined surface 712 of the main wedge block 710. The main wedge block 710 is axially slidably fitted onto the locking bolt 610. One end of the locking bolt 610 has a large end that cannot pass through the main wedge block 710, and the other end passes through the main wedge block 710 and the base 110 before being threadedly engaged with the locking nut 611. In use, tightening the locking nut 611 drives the main wedge block 710 to move towards the base 110, so that the main clamp 160 is moved towards the side clamp 140 through the cooperation of the main wedge block inclined surface 712 and the main clamp inclined surface 161 to finally clamp the line 01.

[0025] The main wedge block 710 is further provided with main wedge block locking grooves 711 at both ends, each including a main groove inclined surface 7111 and a main groove locking surface 7112. The main wedge block locking grooves 711 can engage with the main locking teeth 721 to prevent the main wedge block 710 from moving away from the base 110. Figure 9 (For reference only). The main locking tooth 721 is set on the main locking seat 720. The main locking seat 720 is engaged and slidably installed in the end seat groove 132 of the end seat 130. The main locking seat 720 is assembled with one end of the end seat shaft 520. The other end of the end seat shaft 520 is fitted with a main locking spring 801, which passes through the side plate 131 and is then assembled with the end seat nut 521. The end seat nut 521 cannot pass through the side plate 131. The side plate 131 is fixedly installed on the end seat 130. The main locking spring 801 applies a spring force to the main locking seat 720 to push the main wedge block 710, thereby maintaining the engagement and assembly of the main locking tooth 721 with the main wedge block locking groove 711.

[0026] The main locking tooth 721 is further provided with a main locking tooth inclined surface 7211 and a main locking tooth locking surface 7212. The main locking tooth locking surface 7212 is in close contact with the main groove locking surface 7112 to lock the main wedge block 710. The main locking tooth inclined surface 7211 cooperates with the main groove inclined surface 7111, so that when the main groove inclined surface 7111 presses against the main locking tooth inclined surface 7211, it can press the main lock seat 720 away from the main wedge block 710 to overcome the elastic force of the main lock spring 801 and push the main lock seat 720 to move, thereby causing the main wedge block 710 to move towards the base 110. Figure 5 (For reference), in this way, on the one hand, the main wedge block 710 pushes the main clamping seat 160 to clamp the line 01, and on the other hand, the main locking seat 720 locks the main wedge block 710 (to prevent the main wedge block 710 from moving away from the base). Figure 5(Upward direction), thus ensuring effective pressing and anti-loosening of the main clamp 160. Even if the locking bolt 610 and locking nut 611 loosen, the main locking seat 720 can still maintain the lock on the main wedge block 710, thereby preventing the line 01 from being directly released even if the locking bolt 610 and locking nut 611 loosen during use. This significantly improves the clamping stability of the line 01 and greatly enhances the anti-loosening performance, maintaining clamping even if the locking nut 611 loosens due to vibration or thermal expansion and contraction during use.

[0027] The main wedge block 710 is also assembled with one end of the pull shaft 620. The other end of the pull shaft 620 passes through the main wedge block 710, the base 110, the bushing 650, the cam sleeve 630, the washer 621, and is threadedly engaged with the pull shaft nut 622. The bushing 650 is installed and fixed on the base 110. A locking sleeve 640 is rotatably fitted on the bushing 650. The cam sleeve 630 cannot be rotatably assembled relative to the pull shaft 620. The cam sleeve 630 is preferably fixed on the pull shaft 620.

[0028] The cam sleeve 630 is provided with a first cam surface 631 and a second cam surface 632, and the locking sleeve 640 is provided with a first locking surface 641 and a second locking surface 642 that fit against the first cam surface 631 and the second cam surface 632, respectively. The first cam surface 631 and the second cam surface 632 are at different heights on the axis of the cam sleeve 630 (see...). Figure 20 This design causes the locking sleeve 640 to push the cam sleeve 630 to move axially relative to the locking sleeve when the locking sleeve 640 is rotated. This, in turn, pulls the main wedge block 710 towards the base 110 via the pull shaft 620. The main wedge block 710 then pushes the main clamp 160 towards the side clamp 140 again, further clamping the line 01 and improving the anti-loosening performance.

[0029] A locking sleeve block 643 is installed on the locking sleeve 640. The locking sleeve block 643 is assembled with one end of the cable 350. The cable 350 passes over at least one guide wheel 301 and is assembled with a clamping ring 351. The clamping ring 351 is clamped and fixed on the line 01. The guide wheel 301 is rotatably mounted on the guide wheel shaft 302. The guide wheel shaft 302 is mounted on the base 110 or the end seat 130. In use, once the line 01 is loosened and undergoes axial displacement (slippage in the length direction), the locking sleeve 640 will be pulled to rotate via the cable 350, thereby driving the main wedge block 710 to move towards the base 110, which in turn drives the main clamping seat 160 to move towards the side clamping seat 140 to increase the clamping force. In addition, when the main wedge block 710 moves down, if the main lock seat 720 is pushed to unlock, the main lock seat 720 will resume locking the main wedge block 710. Therefore, it can only be clamped tighter and tighter and will not loosen, so as to improve the clamping preload and greatly improve the anti-loosening performance of line 01.

[0030] The side clamping seat 140 is provided with a side clamping groove 143, which engages with and slides with the secondary wedge block 730. The secondary wedge block 730 is provided with a secondary wedge block inclined surface 732, which fits against the secondary clamping block inclined surface 151 of the secondary clamping block 150. The side of the secondary clamping block 150 away from the secondary clamping block inclined surface 151 is pressed against the line 01, thereby cooperating with the main clamping seat 160 to clamp the line 01. One end of the secondary wedge block 730 protrudes from the cover plate 120 and is directly or indirectly in contact with the tension arm 340. One end of the tension arm 340 is hinged to the pin seat 121 via a tension arm pin 341. A cable shaft 330 is mounted on the other end of the tension arm 340. The cable shaft 330 is assembled with one end of the tension cable 320. The other end of the tension cable 320 is connected to a tension ring 310. The tension ring 310 is fitted and fixed on the line 01 that is not installed in the base 110. The tension cable 320 is flexible but not elastic. The pin seat 121 is located on the cover plate 120.

[0031] During use, if relative vibration occurs between line 01 and base 110 (the circumferential movement of the cross-section of line 01), Figure 5 In the direction of the diameter of line 01, the tension arm 340 is intermittently pressed against the secondary wedge block 730 by the tension cable 320. Once the pressure is sufficient to push the secondary wedge block 730 towards the base 110, the secondary wedge block 730 presses the secondary clamping block 150 towards the main clamping seat 160 to provide greater clamping force, thereby further increasing the clamping force on the line, that is, increasing the clamping preload, and further preventing loosening. This design utilizes the tension (vibration) of line 01 to convert it into clamping preload, thereby avoiding the loosening of line 01 caused by vibration, thermal expansion and contraction, and other factors, which would affect its use.

[0032] The secondary wedge block 730 has a secondary stop groove 731 on its side away from the inclined surface 732. The secondary stop groove 731 engages with the secondary locking tooth 741, which is located on the secondary lock seat 740. The secondary lock seat 740 is fitted with one end of the secondary lock shaft 510. The secondary lock shaft 510 is fitted with a secondary lock spring 802, passes through the side clamp 140, and is threadedly engaged with the secondary lock shaft nut 511. The secondary lock shaft nut 511 cannot pass through the side clamp 140. The secondary lock spring 802 applies a spring force to the secondary lock seat 740, pressing it against the secondary wedge block 730 to maintain the engagement of the secondary stop groove 731 and the secondary locking tooth 741. The three sides of the secondary wedge block 730 away from the secondary stop groove 731 engage with and slide with the side clamping groove 143.

[0033] The auxiliary lock seat 740 engages with and slides with the auxiliary lock seat groove 141. The auxiliary lock seat groove 141 is disposed on the side clamp seat 140. The auxiliary clamp block 150 is also provided with a side slider 152. The side slider 152 engages with and slides with the side sliding groove 142. The side sliding groove 142 is disposed on the side clamp seat 140. The side slider 152 and the side sliding groove 142 cooperate to guide the auxiliary clamp block 150 to move towards the main clamp seat 160, ensuring that the auxiliary clamp block 150 clamps the line 01 after moving.

[0034] See Figure 10 The secondary stop groove 731 includes a secondary locking inclined surface 7311 and a secondary locking stop surface 7312. The secondary locking tooth 741 is provided with a secondary locking tooth inclined surface 7411 and a secondary locking tooth stop surface 7412 at the corresponding positions of the secondary locking inclined surface 7311 and the secondary locking stop surface 7312. The secondary locking tooth stop surface 7412 fits against the secondary locking stop surface 7312, thereby preventing the secondary wedge block 730 from moving away from the base 110. The secondary locking inclined surface 7311 can fit with the secondary locking tooth inclined surface 7411, so that when the secondary wedge block 730 moves towards the base 110, it can squeeze the secondary locking seat 740, so that the secondary locking seat 740 moves away from the secondary clamping block 150 against the secondary locking spring 802. When the upper secondary stop tooth groove 731 moves to be directly opposite the secondary locking tooth 741, the secondary locking tooth 741 is pushed into the secondary stop tooth groove 731 under the elastic force of the secondary locking spring 802 to complete the locking of the secondary wedge block 730. At this time, the clamping force applied to the line 01 can be maintained.

[0035] The cover plate 120 is provided with two pairs of pin seats 121. One pair of pin seats 121 is assembled with the tension arm pin 341, and the other pair of pin seats 121 is hinged to one end of the pressure plate 410 through the pressure plate pin 411. The pressure plate 410 is pressed on the sub-wedge block 730, and the tension arm 340 is pressed on the pressure plate 410, so that the pressure plate 410 transfers the pressure of the tension arm 340 to the sub-wedge block 730.

[0036] A spring plate 810 is installed on the cover plate 120. The spring plate 810 is elastic and one end is pressed against the pressure plate 410 to apply a rotational force to the pressure plate 410, causing it to move away from the sub-wedge block 730, so that the pressure plate 410 and the sub-wedge block 730 do not contact each other in the initial state. During the process of the tension arm 340 pressing the pressure plate 410 and the pressure plate 410 impacting the sub-wedge block 730, a certain acceleration displacement is often required. The spring plate 810 can make the pressure plate 410 and the sub-wedge block 730 have a certain acceleration displacement, so that the accelerated pressure plate 410 impacts the sub-wedge block 730. Once the sub-wedge block 730 is pushed to move towards the base 110, it will push the sub-clamping block 150 to move towards the main clamping seat 160, thereby increasing the preload.

[0037] Preferably, the main clamping seat 160 is engaged and slidably installed in the groove formed by the base 110, the cover plate 120, and the two end seats 130, which can ensure the effective restraint of the main clamping seat 160 and achieve better clamping.

[0038] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0040] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly defined.

[0041] In this application, a circumferentially rotatable assembly is a connection assembly that can rotate relative to each other, such as an assembly using bearings; a circumferentially rotatable but axially movable assembly is one that can rotate relative to each other but cannot move axially, such as by installing shaft clips on both sides of the shaft and the mounting device to prevent the shaft from moving axially; a circumferentially rotatable and axially movable assembly is a movable assembly, such as an assembly where the shaft passes through a shaft hole; an assembly that cannot rotate circumferentially but can move axially can be an assembly using spline grooves or spline mating.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A conductor connection fitting with a self-locking clamping function, characterized in that: The device includes a base, on which a side clamp is fixed. A cover plate is installed on the side of the side clamp away from the base. A main clamp is engaged with the cover plate and slidably installed on it. The main clamp and the side clamp cooperate to clamp the line. A main clamp inclined surface is provided on the end of the main clamp away from the side clamp. The main clamp inclined surface fits against the inclined surface of the main wedge block. The main wedge block is installed on the base by locking bolts. The side clamp seat is provided with a side clamp slide groove, which is assembled with a secondary wedge block. The secondary wedge block is provided with a secondary wedge block inclined surface. The secondary wedge block inclined surface fits against the secondary clamp block inclined surface. The side of the secondary clamp block away from the secondary clamp block inclined surface is pressed against the line. One end of the sub-wedge block protrudes from the cover plate and is directly or indirectly attached to or in contact with the tension arm. One end of the tension arm is hinged to the pin seat of the cover plate, and the other end of the tension arm is connected and fixed to the line not installed in the base through the tension cable.

2. The conductor connection hardware according to claim 1, characterized in that: A cable shaft is installed on the tension arm. One end of the cable shaft is assembled with the tension cable, and the other end of the tension cable is connected to the tension ring. The tension ring is fixed to the line that is not installed in the base.

3. The conductor connection hardware according to claim 1, characterized in that: A secondary stop tooth groove is provided on the side of the secondary wedge block away from the inclined surface of the secondary wedge block. The secondary stop tooth groove is engaged with the secondary locking tooth. The secondary locking tooth is provided on the secondary lock seat. The secondary lock seat is slidably assembled with the secondary lock seat groove. The secondary lock seat groove is provided on the side clamping seat. A secondary lock spring is installed in the secondary lock seat groove. The two ends of the secondary lock spring are respectively pressed against the inner wall of the secondary lock seat groove and the end face of the secondary lock seat away from the secondary locking tooth.

4. The conductor connection hardware according to claim 2, characterized in that: The cover plate is provided with two pairs of pin seats. One pair of pin seats is hinged to the tension arm via tension arm pins, and the other pair of pin seats is hinged to one end of the pressure plate via pressure plate pins. The pressure plate is pressed against the sub-wedge block, and the tension arm is pressed against the pressure plate. A spring sheet is installed on the cover plate. The spring sheet is elastic and one end is pressed against the pressure plate so that the pressure plate does not contact the sub-wedge block in the initial state.

5. The conductor connection hardware according to claim 3, characterized in that: The secondary stop tooth groove includes a secondary lock inclined surface and a secondary lock locking surface. The secondary lock tooth is provided with a secondary lock tooth inclined surface and a secondary lock tooth locking surface at the corresponding positions of the secondary lock inclined surface and the secondary lock locking surface. The secondary lock tooth locking surface fits into the secondary lock locking surface, and the secondary lock inclined surface can fit into the secondary lock tooth inclined surface.

6. The conductor connection hardware according to claim 1, characterized in that: The auxiliary clamping block is also provided with a side slider, which engages with and slides with a side sliding groove, which is provided on the side clamping seat.

7. The conductor connection hardware according to claim 1, characterized in that: The main wedge block is provided with locking grooves at both ends, which can be engaged with the main locking teeth. The main locking teeth are provided on the main lock seat, which is engaged and slidably installed in the end seat groove of the end seat, which is installed on the base. The main locking spring is installed in the end seat groove, and the two ends of the main locking spring are pressed against the inner wall of the end seat groove and the end face of the main lock seat away from the main locking teeth, respectively.

8. The line conductor connecting hardware according to claim 7, characterized in that: the main... The wedge-shaped block locking groove includes a main groove inclined surface and a main groove locking surface. The main locking teeth are also provided with a main locking tooth inclined surface and a main locking tooth locking surface. The main locking tooth locking surface is in close contact with the main groove locking surface to lock the main wedge block. The main locking tooth inclined surface can cooperate with the main groove inclined surface, so that when the main groove inclined surface presses against the main locking tooth inclined surface, it can press the main lock seat away from the main wedge block to overcome the elastic force of the main lock spring and push the main lock seat to move.

9. The conductor connection hardware according to any one of claims 1, 7, and 8, characterized in that: The main wedge block is also assembled with one end of the pull shaft. The other end of the pull shaft passes through the main wedge block, the base, and the bushing and is then assembled with the cam sleeve. The bushing is installed and fixed on the base, and a locking sleeve is fitted on the outside of the bushing. The cam sleeve cannot be rotated relative to the pull shaft during assembly. The cam sleeve is provided with a first cam surface and a second cam surface respectively, and the locking sleeve is provided with a first locking surface and a second locking surface respectively that fit with the first cam surface and the second cam surface. The first cam surface and the second cam surface are at different heights on the axis of the cam sleeve. A locking sleeve block is installed on the locking sleeve, and the locking sleeve block is assembled with one end of the cable, while the other end of the cable is assembled and fixed with the line.

10. The conductor connection hardware according to claim 7, characterized in that: There are two end seats, which are respectively installed on both sides of the base. The main clamp is engaged and slidably installed in the groove formed by the base, the cover plate, and the two end seats.

Images