A tension clamp for cable and wire installation

Abstract

The present invention relates to the technical field of cable and wire installation equipment, and specifically discloses a strain clamp for cable and wire installation, comprising: a strain clamp and a clamping block, wherein the number of the clamping blocks is two, and the two clamping blocks are slidably adapted and plugged into the inner cavity of the strain clamp in the up and down directions respectively; a U-shaped bolt, wherein the number of the U-shaped bolts is two, and the two ends of the two U-shaped bolts are slidably adapted and plugged into the left side of the inner cavity of the strain clamp respectively, and the left end of the U-shaped bolt is slidably extended out of the left side of the strain clamp. The device is provided with a tension adjustment mechanism, which effectively solves the problem of uneven cable tension between the tensioner and the strain clamp, avoids the risk of cable loosening or breaking due to inappropriate tension, and at the same time, realizes precise control of the clamping force of the cable by the U-shaped bolt, which not only ensures the stable connection of the cable, but also avoids cable damage caused by excessive clamping force, and significantly improves the reliability and durability of the power line.

Description

Technical Field

[0001] The invention relates to the technical field of cable and wire installation equipment, in particular to a tension clamp for cable and wire installation. Background Art

[0002] In the power system, the installation and maintenance of cables and wires are key links to ensure the stability and safety of power transmission. As an important power accessory, tension clamps are widely used to fix and maintain the tension of cables and wires. Their main function is to provide stable support at the terminals or corners of the cables, and to withstand the tension generated by the cable's deadweight, wind load, temperature changes and other factors, to ensure the continuous and stable operation of the power lines.

[0003] In the actual installation process, the installation quality of the tension clamp directly affects the tension control of the cable and wire, and further affects the efficiency and safety of power transmission. In the traditional tension clamp installation process, the tensioner plays a vital role. It is responsible for pulling the cable to a predetermined tension state before installation, so as to facilitate the subsequent insertion of the cable into the tension clamp for fixation. However, the tension clamp design in the prior art has a significant defect, that is, there is no tension adjustment mechanism, which means that there is always a section of cable that is not directly acted upon by the tensioner between the tensioner and the tension clamp. When the operator tries to manually pull this section of cable into the tension clamp, due to manpower limitations, it is often difficult to achieve the same tension level as when the tensioner is tightened. Therefore, once the tensioner releases the tension, this section of the cable may be insufficient or unevenly distributed, resulting in vibration, relaxation, and even line breakage during power transmission, which seriously affects the stability and safety of power transmission.

[0004] In addition, during the installation of the tension clamp, controlling the clamping force of the cable is also a major challenge. Traditional tension clamps mostly use U-bolts and nuts for clamping, but when operators tighten the nuts, it is often difficult to accurately control the torque applied, and thus difficult to accurately regulate the clamping force of the U-bolt on the cable. If the clamping force is too small, the cable may loosen due to vibration or external force during long-term use, affecting the continuity and stability of power transmission; if the clamping force is too large, it may damage the outer insulation material of the cable or even crush the conductor, causing safety hazards such as short circuit or leakage, seriously threatening the safe operation of the power system. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that there is no tension adjustment mechanism and the clamping force applied to the cable cannot be controlled, and a tension clamp for cable and wire installation is proposed.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a strain clamp for cable and wire installation, comprising: a strain clamp and a clamping block, the number of the clamping blocks is two, and the two clamping blocks are respectively slidable in the up and down directions to be adapted and plugged into the inner cavity of the strain clamp; the number of U-shaped bolts is two, the two ends of the two U-shaped bolts are respectively slidable to be adapted and plugged into the left side of the inner cavity of the strain clamp, the left end of the U-shaped bolt is slidable to extend out of the left side of the strain clamp, and the outer walls of the two U-shaped bolts are respectively sleeved on the outer walls of the two clamping blocks; the number of the first screws is two, and the two first The screw rods are respectively arranged in the middle of the left side of the tension clamp along the up and down directions, and the positions of the two first screw rods correspond to the positions of the two U-shaped bolts respectively; there are two pads, and the front and rear sides of the two pads can be slidably connected to the two ends of the two U-shaped bolts respectively, and the middle part of the pads can be slidably connected to the outer wall of the first screw rod; there are four first nuts, and the four first nuts are respectively screwed on the two ends of the two U-shaped bolts, and the right side of the first nut is in contact with the left side of the pad; the torque adjustment mechanism is screwed on the outer wall of the first screw rod; the tension adjustment mechanism is arranged on the right side of the tension clamp.

[0007] Furthermore, in order to push the pad to drive the U-shaped bolt to move to the left, the torque adjustment mechanism includes: a rotating push ring, the rotating push ring is threaded on the outer wall of the first nut, the left side of the rotating push ring is in contact with the right side of the pad, the outer wall of the rotating push ring is provided with a first slide groove along the circumferential direction, and the right side of the rotating push ring is provided with a plurality of slots equidistantly along the circumferential direction; the right side of the rotating push ring can be rotatably adapted and inserted into the inner cavity of the rotating block, the left side of the inner cavity of the rotating block can be slidably adapted and inserted into the inner cavity of the first slide groove, the rotating block is sleeved on the outer wall of the first screw, there is a gap between the inner wall of the rotating block and the outer wall of the first screw, and the right side of the inner cavity of the rotating block is circumferentially adapted and inserted into the inner cavity of the first slide groove. A plurality of extrusion grooves are opened equidistantly in the circumferential direction, and a plurality of second slide grooves are opened equidistantly on the inner wall of the extrusion groove; a push plate can be slidably adapted and inserted into the right side of the inner cavity of the extrusion groove; there are a plurality of first sliders, and a plurality of first sliders are respectively arranged on the outer walls of a plurality of push plates equidistantly in the circumferential direction, and the first sliders can be slidably adapted and inserted into the inner cavity of the second slide groove; a first spring is embedded in the inner cavity of the extrusion groove, and the right end of the first spring is clamped on the left side of the push plate; a part of the card ball is embedded in the inner cavity of the extrusion groove, and the other part of the card ball is adapted to extend into the inner cavity of the card groove corresponding to its position, and the left end of the first spring is clamped on the outer wall of the card ball.

[0008] Furthermore, in order to adjust the extrusion force of the first spring, the torque adjustment mechanism also includes: a push rod, the left end of the push rod is arranged on the right side of the push plate, and the right end of the push rod can be slidably extended out of the right side of the rotating block; the left side of the extrusion seat is arranged on the right end of the push rod, the extrusion seat is sleeved on the outer wall of the first screw rod, and there is a gap between the inner wall of the extrusion seat and the outer wall of the first screw rod; the left side of the driving block is rotatably arranged on the right side of the rotating block, the extrusion seat is located in the inner cavity of the driving block, and the outer wall of the extrusion seat is screwed to the inner wall of the driving block.

[0009] Furthermore, in order to adjust the tension of the cable, the tension adjustment mechanism includes: a second screw, which is rotatably arranged at the top right side of the inner cavity of the tension clamp through a pin shaft; the outer wall of the second screw is slidably inserted into the inner cavity of the first piston rod; the second nut is rotatably arranged on the left side of the first piston rod, and the second nut is screwed on the outer wall of the second screw; the first piston is arranged on the right side of the first piston rod; the number of second sliders is several, and several second sliders are respectively arranged on the outer wall of the first piston rod at equal distances along the circumferential direction; the connecting seat is slidably sleeved on the outer wall of the first piston rod, and the inner wall of the connecting seat is provided with a third slide groove at equal distances along the circumferential direction, the second slide block is slidably adapted and inserted into the inner cavity of the third slide groove, the left side of the connecting seat is provided with a plurality of first air holes connected to its inner cavity at equal distances along the circumferential direction, and the right side of the connecting seat is provided with a negative pressure cavity, and the inner cavity of the first piston and the connecting seat match.

[0010] Furthermore, in order to monitor the tension value, the tension adjustment mechanism also includes: a piston cylinder, the piston cylinder is arranged on the right side of the top end of the connecting seat, the inner cavity of the piston cylinder is connected to the inner cavity of the negative pressure cavity, and the top end of the outer wall of the piston cylinder is equidistantly opened along the circumferential direction with a plurality of third air holes connected to the inner cavity; the second piston is slidably adapted to be inserted into the inner cavity of the piston cylinder; the second piston rod is arranged at the top end of the second piston, and the top end of the second piston rod can be slidably extended out of the top end of the piston cylinder; the second spring is sleeved on the outer wall of the second piston rod, and the bottom end of the second spring is clamped on The top end of the second piston and the top end of the second spring are clamped on the top end of the inner cavity of the piston cylinder; the outer shell is arranged on the right side of the top end of the connecting seat, the piston cylinder is located in the inner cavity of the outer shell, and a plurality of second air holes are opened on the rear side of the outer shell; the dial is arranged on the front side of the outer shell; the rear end of the rotating rod is rotatably arranged on the rear side of the inner cavity of the outer shell through a bearing, the front end of the rotating rod extends out of the front side of the outer shell and passes through the middle part of the front side of the dial; the gear is sleeved on the outer wall of the rotating rod and is locked by a top screw, and the gear is meshed with the second piston rod; the pointer is arranged on the front side of the outer wall of the rotating rod.

[0011] Furthermore, in order to install the tension clamp, the tension adjustment mechanism also includes: a bolt, which is slidably arranged at the rear right end of the connecting seat, and the front end of the bolt extends out of the front side of the connecting seat; a third nut is screwed to the front side of the outer wall of the bolt.

[0012] Furthermore, the length of the card ball extending into the inner cavity of the card slot is smaller than its radius.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The present invention can fix the connecting seat on the electric pole through the cooperation between the bolt and the third nut, and can clamp the cable in the inner cavity of the tension clamp by squeezing the clamping block with the U-shaped bolt. The rotating block drives the rotating push ring to rotate, so that the rotational force generated by the rotation of the rotating push ring can cause the rotating push ring to move to the left along the outer wall of the first screw rod, thereby pushing the pad to drive the U-shaped bolt to move to the left, thereby increasing the clamping force applied by the clamping block to the cable. When the rotational torque of the rotating block is greater than the elastic force of the first spring, continuing to rotate the rotating block will cause the inner wall of the card slot to squeeze the card ball to move toward the inner cavity of the squeezing slot, and squeeze the first spring to cause elastic deformation, so that the rotating block will idle and will not drive the rotating push ring to rotate, thereby preventing the clamping force applied by the clamping block to the cable from being too large.

[0015] (2) The present invention rotates the second nut to cause the second nut to move to the left along the outer wall of the second screw rod, thereby causing the spacing between the tension clamps of the first piston rod to become smaller, so that the first piston rod can be pulled to the right under the action of the negative pressure in the inner cavity of the negative pressure chamber, so that the tension clamp can be pulled to the right by the first piston rod through the second screw rod, thereby increasing the tension of the cable. At the same time, under the action of atmospheric pressure, since the inner cavity of the negative pressure chamber is negative pressure, the second piston can be pushed to drive the second screw plug rod to move downward. The downward movement of the second screw plug rod can cause the gear to drive the pointer to rotate through the rotating rod, so that the value of the negative pressure in the inner cavity of the negative pressure chamber can be read through the dial, thereby determining the tension of the cable.

[0016] (3) The device is equipped with a tension adjustment mechanism, which effectively solves the problem of uneven cable tension between the tensioner and the tension clamp, avoiding the risk of cable loosening or breaking due to inappropriate tension. At the same time, it realizes the precise control of the cable clamping force by the U-shaped bolt, which not only ensures the stable connection of the cable, but also avoids cable damage caused by excessive clamping force, significantly improving the reliability and durability of the power line, and providing a strong guarantee for the stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 is a schematic structural diagram of a first nut;

[0020] Figure 3 It is a front cross-sectional view of the present invention;

[0021] Figure 4 An exploded view of the present invention;

[0022] Figure 5 is a schematic diagram of the structure of the third chute;

[0023] Figure 6 is a structural schematic diagram of a torque adjustment mechanism;

[0024] Figure 7 It is an exploded diagram of the torque adjustment mechanism;

[0025] Figure 8 It is a structural schematic diagram of the extrusion tank;

[0026] Fig. 9 for Figure 3 A magnified image of point A;

[0027] Fig.10 for Figure 4 A magnified view of point B;

[0028] Fig.11 for Figure 7 Enlarged view of point C;

[0029] Fig.12 for Figure 8 Enlarged view of point D.

[0030] The parts represented by the numbers in the figure are listed as follows: 1. Tension clamp; 2. Clamping block; 3. U-bolt; 4. First screw; 5. Pad; 6. First nut; 7. Torque adjustment mechanism; 71. Rotating push ring; 72. First slide groove; 73. Clamping groove; 74. Rotating block; 75. Extrusion groove; 76. Second slide groove; 77. Push plate; 78. First slider; 79. First spring; 710. Clamping ball; 711. Push rod; 712. Extrusion seat; 713. Driving block; 8. Tension adjustment mechanism; 81. First Second screw rod; 82, first piston rod; 83, second nut; 84, first piston; 85, second slider; 86, connecting seat; 87, third slide groove; 88, first air hole; 89, negative pressure chamber; 810, piston cylinder; 811, second piston; 812, second piston rod; 813, second spring; 814, housing; 815, second air hole; 816, third air hole; 817, dial; 818, rotating rod; 819, gear; 820, pointer; 821, bolt; 822, third nut. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] Reference Figure 1-Figure 12 , a tension clamp for cable and wire installation, comprising: a tension clamp 1, a clamping block 2, a U-shaped bolt 3, a first screw 4, a pad 5, a first nut 6, a torque adjustment mechanism 7 and a tension adjustment mechanism 8, the number of the clamping blocks 2 is two, the two clamping blocks 2 are slidably adapted and plugged into the inner cavity of the tension clamp 1 in the up-down direction, and the clamping block 2 is used to apply a clamping force to the cable, the number of the U-shaped bolts 3 is two, the two ends of the two U-shaped bolts 3 are slidably adapted and plugged into the left side of the inner cavity of the tension clamp 1, the left end of the U-shaped bolt 3 is slidably extended out of the left side of the tension clamp 1, the outer walls of the two U-shaped bolts 3 are respectively sleeved on the outer walls of the two clamping blocks 2, and the U-shaped bolt 3 is used to squeeze the clamping block 2, the number of the first screws 4 is two, and the two first screws 4 are respectively arranged on the tension clamp 1 in the up-down direction. In the middle of the left side, the positions of the two first screws 4 correspond to the positions of the two U-shaped bolts 3 respectively. There are two pads 5. The front and rear sides of the two pads 5 can be slidably sleeved on the two ends of the two U-shaped bolts 3 respectively. The middle part of the pad 5 can be slidably sleeved on the outer wall of the first screw 4. The pad 5 is used to drive the U-shaped bolt 3 to move to the left. There are four first nuts 6. The four first nuts 6 are respectively screwed on the two ends of the two U-shaped bolts 3. The right side of the first nut 6 is in contact with the left side of the pad 5. The first nut 6 is used to cover the pad 5. The torque adjustment mechanism 7 is screwed on the outer wall of the first screw 4. The torque adjustment mechanism 7 is used to control and adjust the clamping force applied by the clamping block 2 to the cable. The tension adjustment mechanism 8 is arranged on the right side of the tension clamp 1. The tension adjustment mechanism 8 is used to adjust the tension of the cable.

[0034] Specifically, the torque adjustment mechanism 7 includes: a rotating push ring 71, a first slide groove 72, a clamping groove 73, a rotating block 74, an extrusion groove 75, a second slide groove 76, a push plate 77, a first slider 78, a first spring 79, a clamping ball 710, a push rod 711, an extrusion seat 712 and a driving block 713. The rotating push ring 71 is screwed to the outer wall of the first nut 6, and the left side of the rotating push ring 71 is in contact with the right side of the pad 5. The outer wall of the rotating push ring 71 is provided with a first slide groove 72 along the circumferential direction, and the right side of the rotating push ring 71 is provided with a plurality of clamping grooves 73 equidistantly along the circumferential direction. The rotational force generated by the rotation of the rotating push ring 71 can cause the rotating push ring 71 to move to the left along the outer wall of the first screw rod 4, so that the rotating push ring 71 can be used to push the pad 5 to drive the U-bolt 3 to the left. The cam 76 is provided with a plurality of second guide grooves 76 on the inner wall of the first slide groove 72, and the plurality of first slide grooves 78 are provided on the inner wall of the first slide groove 72. The first slider 78 is slidably adapted to be inserted into the inner cavity of the second slide groove 76, and the first spring 79 is embedded in the inner cavity of the extrusion groove 75. The right end of the first spring 79 is clamped on the left side of the push plate 77. The first spring 79 is a rotation spring. It undergoes elastic deformation after being squeezed or stretched by external force, and returns to its initial state after the external force is removed. The first spring 79 is used here to apply a thrust to the card ball 710 to move into the inner cavity of the card groove 73. A part of the card ball 710 is embedded in the inner cavity of the extrusion groove 75, and the other part of the card ball 710 is adapted to extend into the inner cavity of the card groove 73 corresponding to its position. The left end of the first spring 79 is clamped on the outer wall of the card ball 710, and the card ball 710 is pushed by the first spring 79. When the rotating block 74 rotates, the rotating push ring 71 can be driven to rotate by the cooperation between the card ball 710 and the card slot 73. The length of the card ball 710 extending into the inner cavity of the card slot 73 is less than its radius, ensuring that the card ball 710 can move out of the inner cavity of the card slot 73. The left end of the push rod 711 is arranged on the right side of the push plate 77. The right end of the push rod 711 can slidably extend out of the right side of the rotating block 74. The push rod 711 is used to push the push plate 77 to move. The left side of the extrusion seat 712 is arranged on the right end of the push rod 711. The extrusion seat 712 is sleeved on the outer wall of the first screw 4. There is a gap between the inner wall of the extrusion seat 712 and the outer wall of the first screw 4. The left side of the driving block 713 is rotatably arranged on the right side of the rotating block 74.The extrusion seat 712 is located in the inner cavity of the driving block 713, and the outer wall of the extrusion seat 712 is screwed to the inner wall of the driving block 713.

[0035] Specifically, the tension adjustment mechanism 8 includes: a second screw rod 81, a first piston rod 82, a second nut 83, a first piston 84, a second slider 85, a connecting seat 86, a third slide groove 87, a first air hole 88, a negative pressure chamber 89, a piston cylinder 810, a second piston 811, a second piston rod 812, a second spring 813, a housing 814, a second air hole 815, a third air hole 816, a dial 817, a rotating rod 818, a gear 819, a pointer 820, a bolt 821 and a third nut 822. The second screw rod 81 is rotatably arranged at the top right side of the inner cavity of the tension clamp 1 through a pin shaft, and the outer wall of the second screw rod 81 is slidably inserted into the inner cavity of the first piston rod 82. The first piston rod 82 is used to drive the first piston 84 to move. The second nut 83 is rotatably arranged on the left side of the first piston rod 82, and the second nut 83 is screwed on the outer wall of the second screw rod 81. The rotation of the second nut 83 can cooperate with the second screw rod 81 to reduce or increase the distance between the tension clamp 1 and the first piston rod 82. The first piston 84 is arranged on the right side of the first piston rod 82. The movement of the first piston 84 can increase or decrease the pressure in the inner cavity of the negative pressure chamber 89. The number of second sliders 85 is several, and several second sliders 85 are respectively arranged on the outer wall of the first piston rod 82 at equal distances along the circumferential direction. The second slider 85 can cooperate with the third slide groove 87 to prevent the first piston rod 82 from rotating. The connecting seat 86 can be slidably sleeved on the outer wall of the first piston rod 82. The inner wall of the seat 86 is provided with third slide grooves 87 at equal intervals along the circumferential direction, and the second slider 85 can be slidably adapted to be inserted into the inner cavity of the third slide groove 87. A plurality of first air holes 88 connected to the inner cavity are provided at equal intervals along the circumferential direction on the left side of the connecting seat 86, and a negative pressure cavity 89 is provided on the right side of the connecting seat 86. The first piston 84 matches the inner cavity of the connecting seat 86. The piston cylinder 810 is arranged on the right side of the top end of the connecting seat 86. The inner cavity of the piston cylinder 810 is connected to the inner cavity of the negative pressure cavity 89. A plurality of third air holes 816 connected to the inner cavity are provided at equal intervals along the circumferential direction on the top end of the outer wall of the piston cylinder 810. The second piston 811 can be slidably adapted to be inserted into the inner cavity of the piston cylinder 810, and the second piston rod 812 is arranged at the top end of the second piston 811 The top end of the second piston rod 812 can be slidably extended out of the top end of the piston cylinder 810, the second spring 813 is sleeved on the outer wall of the second piston rod 812, the bottom end of the second spring 813 is clamped on the top end of the second piston 811, and the top end of the second spring 813 is clamped on the top end of the inner cavity of the piston cylinder 810. The second spring 813 is a rotation spring, which undergoes elastic deformation after being squeezed or stretched by external force, and returns to its initial state after the external force is removed. The second spring 813 is used here to pull the second piston 811 back to its initial position. The housing 814 is arranged on the right side of the top end of the connecting seat 86, the piston cylinder 810 is located in the inner cavity of the housing 814, and a plurality of second air holes 815 are opened on the rear side of the housing 814. The dial 817 is arranged on the front side of the housing 814.The rear end of the rotating rod 818 is rotatably arranged on the rear side of the inner cavity of the shell 814 through a bearing, and the front end of the rotating rod 818 extends out of the front side of the shell 814 and passes through the middle of the front side of the dial 817. The gear 819 is sleeved on the outer wall of the rotating rod 818 and locked by a top screw. The gear 819 and the second piston rod 812 are meshed. The pointer 820 is arranged on the front side of the outer wall of the rotating rod 818. The pointer 820 can cooperate with the dial 817 to read the pressure value in the inner cavity of the negative pressure chamber 89, thereby monitoring the tension of the cable. The bolt 821 is slidably arranged on the right end of the rear side of the connecting seat 86, and the front end of the bolt 821 extends out of the front side of the connecting seat 86. The third nut 822 is screwed on the front side of the outer wall of the bolt 821. The connecting seat 86 can be fixedly installed on the electric pole by the cooperation between the bolt 821 and the third nut 822.

[0036] In the present invention, step 1, when in use, the maximum clamping force applied by the clamping block 2 to the cable is adjusted according to the thickness of the different cables. One hand fixes the column rotating block 74, and the other hand rotates the driving block 713. The rotational force generated by the rotation of the driving block 713 can cause the extrusion seat 712 to move to the left or right, so that the push plate 77 can be driven to move to the left or right by the push rod 711, and then the elastic force of the first spring 79 can be adjusted by the movement of the push plate 77, and the force applied by the first spring 79 to the card ball 710 into the card slot 73 can be adjusted. The thrust of the movement in the cavity is applied until the extrusion seat 712 moves to a suitable position, and the connection seat 86 is fixedly installed on the electric pole by the cooperation between the bolt 821 and the third nut 822. The cable to be fixed is tightened to a suitable tension by the tensioner, and the cable in the loose section after being tightened by the tensioner is inserted into the inner cavity of the tension clamp 1 and tightened, and the rotating block 74 and the driving block 713 are rotated synchronously. The rotation of the rotating block 74 can drive the rotating push ring 71 to rotate by the cooperation between the first spring 79, the card ball 710 and the card slot 73, and the rotating push ring 7 The rotational force generated by the rotation of the first screw 4 can cause the rotating push ring 71 to drive the rotating block 74 and the driving block 713 to move to the left along the outer wall of the first screw rod 4, and then the rotating push ring 71 can be used to push the pad 5 to drive the U-shaped bolt 3 to move to the left. The movement of the U-shaped bolt 3 to the left can squeeze the clamping block 2 to move to the left, and then the clamping block 2 can be used to clamp and fix the cable in the inner cavity of the tension clamp 1. As the clamping force applied by the clamping block 2 to the cable increases, the torque of the rotating push ring 71 will increase until the clamping block 2 applies a suitable clamping force to the cable. Tightening force, at this time, the torque of the rotating push ring 71 is greater than the thrust applied by the first spring 79 to the card ball 710, so that the continued rotation of the rotating block 74 and the driving block 713 will cause the inner wall of the card slot 73 to squeeze the card ball 710 to move into the inner cavity of the squeezing groove 75, and squeeze the first spring 79 to elastically deform until the card ball 710 is separated from the inner cavity of the card slot 73, thereby causing the rotating block 74 to be unable to continue to drive the rotating push ring 71 to rotate, causing the rotating block 74 to idle, thereby preventing the clamping block 2 from applying too much clamping force to the cable;

[0037] Step 2: After the cable is fixedly clamped in the inner cavity of the tension clamp 1, the second nut 83 is rotated. The rotational force generated by the rotation of the second nut 83 will cause the second screw 81 to move toward the inner cavity of the first piston rod 82, thereby reducing the distance between the tension clamp 1 and the first piston rod 82. Under the tension factor of the cable, the tension clamp 1 will be pulled through the second screw 81 and the second nut 83 to pull the first piston rod 82 to move to the left, thereby reducing the pressure in the inner cavity of the negative pressure chamber 89. Under the action of the negative pressure in the inner cavity of the negative pressure chamber 89 and the atmospheric pressure, the pressure in the negative pressure chamber 89 will be reduced. Under the action of , the second piston 811 will be pushed to move downward, and the second spring 813 will be stretched to undergo elastic deformation. The downward movement of the second piston 811 will drive the second piston rod 812 to move downward. The downward movement of the second piston rod 812 will prompt the gear 819 to drive the pointer 820 to rotate through the rotating rod 818, so as to utilize the cooperation between the pointer 820 and the dial 817 to read the negative pressure value in the inner cavity of the negative pressure chamber 89 to judge the tension of the cable until the cable reaches an appropriate tension, and then release the tensioner to complete the installation of the tension clamp 1.

[0038] To sum up, the device is provided with a tension adjustment mechanism, which effectively solves the problem of uneven cable tension between the tensioner and the tension clamp, avoids the risk of cable loosening or breaking due to inappropriate tension, and at the same time, realizes precise control of the cable clamping force by the U-shaped bolt, which not only ensures the stable connection of the cable, but also avoids cable damage caused by excessive clamping force, significantly improves the reliability and durability of the power line, and provides a strong guarantee for the stable operation of the power system.

[0039] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A tension clamp for cable and wire installation, characterized in that: include: Tension clamp (1); A clamping block (2), wherein the number of the clamping blocks (2) is two, and the two clamping blocks (2) are respectively slidable in the up-down direction and adapted to be plugged into the inner cavity of the tension clamp (1); U-shaped bolts (3), the number of the U-shaped bolts (3) is two, the two ends of the two U-shaped bolts (3) are respectively slidably adapted to be inserted into the left side of the inner cavity of the tension clamp (1), the left end of the U-shaped bolt (3) is slidably extended out of the left side of the tension clamp (1), and the outer walls of the two U-shaped bolts (3) are respectively sleeved on the outer walls of the two clamping blocks (2); A first screw rod (4), wherein the number of the first screw rods (4) is two, and the two first screw rods (4) are respectively arranged in the middle of the left side of the tension clamp (1) along the up-down direction, and the positions of the two first screw rods (4) respectively correspond to the positions of the two U-shaped bolts (3); A backing plate (5), wherein the number of the backing plates (5) is two, and the front and rear sides of the two backing plates (5) are respectively slidably sleeved on the two ends of the two U-shaped bolts (3), and the middle part of the backing plate (5) is slidably sleeved on the outer wall of the first screw rod (4); a first nut (6), the number of the first nuts (6) being four, the four first nuts (6) being respectively screwed onto the two ends of the two U-shaped bolts (3), the right side of the first nut (6) being in contact with the left side of the pad (5); A torque adjustment mechanism (7), wherein the torque adjustment mechanism (7) is screwed to the outer wall of the first screw rod (4), and the torque adjustment mechanism (7) comprises: A rotating push ring (71), the rotating push ring (71) being screwed to the outer wall of the first nut (6), the left side of the rotating push ring (71) being in contact with the right side of the backing plate (5), the outer wall of the rotating push ring (71) being provided with a first sliding groove (72) along the circumferential direction, and the right side of the rotating push ring (71) being provided with a plurality of slots (73) equidistantly along the circumferential direction; A rotating block (74), the right side of the rotating push ring (71) is rotatably adapted to be inserted into the inner cavity of the rotating block (74), the left side of the inner cavity of the rotating block (74) is slidably adapted to be inserted into the inner cavity of the first slide groove (72), the rotating block (74) is sleeved on the outer wall of the first screw rod (4), there is a gap between the inner wall of the rotating block (74) and the outer wall of the first screw rod (4), a plurality of extrusion grooves (75) are equidistantly provided on the right side of the inner cavity of the rotating block (74) along the circumferential direction, and a plurality of second slide grooves (76) are equidistantly provided on the inner wall of the extrusion groove (75) along the circumferential direction; A push plate (77), the push plate (77) being slidably adapted to be inserted into the right side of the inner cavity of the extrusion groove (75); A first sliding block (78), the number of the first sliding blocks (78) being multiple, the multiple first sliding blocks (78) being respectively arranged on the outer walls of the multiple push plates (77) at equal intervals along the circumferential direction, the first sliding blocks (78) being slidably adapted to be inserted into the inner cavity of the second sliding groove (76); a first spring (79), the first spring (79) being embedded in the inner cavity of the extrusion groove (75), the right end of the first spring (79) being clamped on the left side of the push plate (77); A locking ball (710), wherein a portion of the locking ball (710) is embedded in the inner cavity of the extrusion groove (75), and another portion of the locking ball (710) is adapted to extend into the inner cavity of the locking groove (73) corresponding to its position, and the left end of the first spring (79) is locked to the outer wall of the locking ball (710); A tension adjustment mechanism (8), wherein the tension adjustment mechanism (8) is arranged on the right side of the tension clamp (1).

2. A tension clamp for cable and wire installation according to claim 1, characterized in that: The torque adjustment mechanism (7) further comprises: A push rod (711), the left end of the push rod (711) being arranged on the right side of the push plate (77), and the right end of the push rod (711) being slidably extended out of the right side of the rotating block (74); an extrusion seat (712), the left side of the extrusion seat (712) being arranged at the right end of the push rod (711), the extrusion seat (712) being sleeved on the outer wall of the first screw rod (4), and a gap being present between the inner wall of the extrusion seat (712) and the outer wall of the first screw rod (4); A driving block (713), wherein the left side of the driving block (713) is rotatably arranged on the right side of the rotating block (74), the extrusion seat (712) is located in the inner cavity of the driving block (713), and the outer wall of the extrusion seat (712) is screwed to the inner wall of the driving block (713).

3. A tension clamp for cable and wire installation according to claim 2, characterized in that: The tension adjustment mechanism (8) comprises: A second screw rod (81), the second screw rod (81) being rotatably arranged at the top right side of the inner cavity of the tension clamp (1) via a pin; A first piston rod (82), wherein the outer wall of the second screw rod (81) is slidably inserted into the inner cavity of the first piston rod (82); a second nut (83), the second nut (83) being rotatably disposed on the left side of the first piston rod (82), the second nut (83) being screwed to the outer wall of the second screw rod (81); A first piston (84), the first piston (84) being arranged on the right side of the first piston rod (82); A second sliding block (85), wherein the number of the second sliding blocks (85) is multiple, and the multiple second sliding blocks (85) are respectively arranged on the outer wall of the first piston rod (82) at equal intervals along the circumferential direction; A connecting seat (86), wherein the connecting seat (86) is slidably sleeved on the outer wall of the first piston rod (82), the inner wall of the connecting seat (86) is provided with third sliding grooves (87) at equal intervals along the circumferential direction, the second sliding block (85) is slidably adapted to be inserted into the inner cavity of the third sliding groove (87), a plurality of first air holes (88) connected to the inner cavity of the connecting seat (86) are provided at equal intervals along the circumferential direction on the left side of the connecting seat (86), a negative pressure cavity (89) is provided on the right side of the connecting seat (86), and the inner cavities of the first piston (84) and the connecting seat (86) match.

4. A tension clamp for cable and wire installation according to claim 3, characterized in that: The tension adjustment mechanism (8) further comprises: A piston cylinder (810), the piston cylinder (810) being arranged on the right side of the top end of the connecting seat (86), the inner cavity of the piston cylinder (810) being connected to the inner cavity of the negative pressure cavity (89), and a plurality of third air holes (816) being connected to the inner cavity of the piston cylinder (810) being formed at equal intervals along the circumferential direction at the top end of the outer wall of the piston cylinder (810); A second piston (811), the second piston (811) is slidably adapted to be inserted into the inner cavity of the piston cylinder (810); A second piston rod (812), the second piston rod (812) being arranged at the top end of the second piston (811), the top end of the second piston rod (812) being slidably extended out of the top end of the piston cylinder (810); a second spring (813), wherein the second spring (813) is sleeved on the outer wall of the second piston rod (812), the bottom end of the second spring (813) is clamped on the top end of the second piston (811), and the top end of the second spring (813) is clamped on the top end of the inner cavity of the piston cylinder (810); A shell (814), the shell (814) being arranged on the right side of the top end of the connecting seat (86), the piston cylinder (810) being located in the inner cavity of the shell (814), and a plurality of second air holes (815) being opened on the rear side of the shell (814); A dial (817), wherein the dial (817) is arranged on the front side of the housing (814); a rotating rod (818), the rear end of the rotating rod (818) being rotatably disposed on the rear side of the inner cavity of the housing (814) via a bearing, and the front end of the rotating rod (818) extending out of the front side of the housing (814) and penetrating the middle part of the front side of the dial (817); A gear (819), wherein the gear (819) is sleeved on the outer wall of the rotating rod (818) and is locked by a top screw, and the gear (819) is meshed with the second piston rod (812); A pointer (820), wherein the pointer (820) is arranged on the front side of the outer wall of the rotating rod (818).

5. A tension clamp for cable and wire installation according to claim 4, characterized in that: The tension adjustment mechanism (8) further comprises: A bolt (821), wherein the bolt (821) is slidably disposed at a rear right end of the connecting seat (86), and a front end of the bolt (821) extends out of a front side of the connecting seat (86); A third nut (822), wherein the third nut (822) is screwed onto the front side of the outer wall of the bolt (821).

6. A tension clamp for cable and wire installation according to claim 5, characterized in that: The length of the locking ball (710) extending into the inner cavity of the locking groove (73) is less than its radius.

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