A spacer rod for laying power cables

Abstract

The present invention provides a spacer bar for erecting power cables, comprising a fixed ring, a guide hole is provided through the fixed ring horizontally; the side of the movable ring is movably fitted to the fixed ring, a plurality of movable columns are provided on the side of the movable ring, and a free end of each movable column is provided with an anti-slip disk; a plurality of spacer arms are evenly provided on the outer side of the fixed ring in a divergent shape; a fixed buckle is provided at the free end of each spacer arm, and a C-shaped first clamping portion is provided on the inner wall of the fixed buckle; a sliding member is movably connected to the spacer arm; the outer end of each sliding member has a movable buckle, the movable buckle is C-shaped, the opening direction of the movable buckle is opposite to the opening direction of the fixed buckle, and a C-shaped second clamping portion is provided on the inner wall of the movable buckle; one end of the articulated arm is hinged to the movable ring, and the other end is hinged to the inner end of the sliding member; an adjustment mechanism is used to adjust the angle of the movable ring. The present invention provides a new spacer bar for erecting power cables.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power and relates to a spacer rod for erecting power cables. Background Art

[0002] Spacer bars are hardware that are installed on split conductors to fix the spacing between each split conductor to prevent the conductors from whipping each other and suppress breeze vibration and sub-span oscillation. Spacer bars are generally installed in the middle of the span, one every 50 to 60 meters.

[0003] The main requirements for spacers are that the wire clamps must have sufficient grip and must not be loosened during long-term operation. The overall strength must be able to withstand the centripetal force of each split conductor when the line is short-circuited and fatigue under long-term vibration. Spacers can be divided into two categories based on performance: damping and rigidity. Damping spacers have wear-resistant rubber pads embedded in their moving parts, and the damping of the rubber pads is used to consume the vibration energy of the wires, thereby damping the vibration of the wires. Rigid spacers without such rubber pads are generally used in areas where vibration is not easy to occur or as jumper spacers due to their poor vibration absorption performance. Summary of the invention

[0004] The purpose of the present invention is to provide a spacer bar for laying power cables, and to provide a new spacer bar.

[0005] In order to achieve the above technical effects, the present invention provides a spacer for erecting power cables, comprising:

[0006] A fixing ring, through which a plurality of arc-shaped guide holes are horizontally formed;

[0007] A movable ring, wherein the movable ring is coaxial with the fixed ring, and the side of the movable ring is movably attached to the fixed ring, and a plurality of movable columns are provided on the side of the movable ring, and an anti-slip disk is provided at the free end of each movable column, and each movable column is movably attached to the inner wall of one of the guide holes, the diameter of the anti-slip disk is larger than the width of the guide hole, and the anti-slip disk is movably attached to the side of the fixed ring away from the movable ring;

[0008] Spacer arms, a plurality of the spacer arms are evenly arranged on the outer side of the fixing ring in a divergent shape, and the length direction of each spacer arm intersects with the axis of the fixing ring;

[0009] A fixed buckle, wherein the free end of each of the spacer arms is provided with a fixed buckle, the fixed buckle is C-shaped, the opening of the fixed buckle faces the fixed ring, and the inner wall of the fixed buckle is provided with a C-shaped first clamping portion;

[0010] A sliding member, the sliding member is movably connected to the spacer arm, and the sliding member moves along the length direction of the spacer arm;

[0011] A movable fastening member, wherein the outer end of each of the sliding members has a movable fastening member, the movable fastening member is C-shaped, the opening direction of the movable fastening member is opposite to the opening direction of the fixed fastening member, and the inner wall of the movable fastening member is provided with a C-shaped second clamping portion;

[0012] an articulated arm, one end of which is articulated to the movable ring, and the other end of which is articulated to the inner end of the sliding member;

[0013] An adjusting mechanism, the adjusting mechanism is used to adjust the angle of the movable ring, the movable ring includes a first state and a second state;

[0014] When the movable ring is in the first state, the movable column abuts against one end of the guide hole, an opening for a cable to be inserted is formed between the movable fastening member and the corresponding fixed fastening member, and an obtuse angle is formed between the hinge arm and the sliding member;

[0015] When the movable ring is in the second state, the movable column abuts against the other end of the guide hole, a space for clamping the cable is formed between the first clamping portion and the second clamping portion, and the straight line where the articulated arm is located is collinear with the straight line where the sliding member is located.

[0016] The present invention is further configured as follows: an anti-slip groove is provided in the spacer arm, a movable groove is provided in the middle of the anti-slip groove, the longitudinal section formed by the anti-slip groove and the movable groove is T-shaped, a connecting portion is provided on the side of the sliding part, an anti-slip portion is provided at the free end of the connecting portion, the connecting portion is movably matched with the movable groove, and the anti-slip portion is movably matched with the anti-slip groove.

[0017] The present invention is further configured such that an extension portion is provided at one end of the sliding member close to the movable ring, the hinged arm is Z-shaped, and one end of the hinged arm is hinged to the side of the movable ring away from the fixed ring, and the two sides of the other end are respectively hinged to the extension portion and the anti-slip portion, and the middle part is located on the outside of the movable ring.

[0018] The present invention is further configured such that an auxiliary fastener is provided on one side of the fixed fastener close to the movable fastener, the auxiliary fastener is in a C-shape with its opening facing the movable fastener, and a C-shaped third clamping portion is provided on the inner wall of the auxiliary fastener, and when the movable ring is in the second state, the second clamping portion and the third clamping portion act on both sides of the cable.

[0019] The present invention is further configured that the free end of the fixed buckle is provided with an anti-slip arm, the anti-slip arm and the fixed buckle form a J-shape, the inner wall of the anti-slip arm close to the side of the movable buckle is provided with a receiving groove, a one-way piece is hingedly arranged in the receiving groove, a return torsion spring that is continuously in a compressed state is arranged between the hinged end of the one-way piece and the inner wall of the receiving groove, the inner wall of the receiving groove at one end away from the fixed buckle is an inclined terminal slope, when the cable and the one-way piece are in a separated state, the outer side of the one-way piece contacts the terminal slope, when the cable passes through the opening between the anti-slip arm and the spacer arm, the cable can drive the one-way piece to rotate into the receiving groove, and the cable can be clamped in the first clamping part, when the cable passes over the one-way piece, the one-way piece rotates to fit the terminal slope under the elastic force of the return torsion spring, and plays a limiting role on the cable;

[0020] The free ends of the two anti-slip arms at the top are inclined downward, and the inclination directions of the two anti-slip arms at the top are opposite, and the free ends of all the other anti-slip arms are inclined upward.

[0021] The present invention is further configured such that a first positioning hole is formed through the fixed ring, and a second positioning hole is formed through the movable ring, and when the movable ring is in the second state, the first positioning hole is coaxial with the second positioning hole;

[0022] It also includes an auxiliary bolt, one end of which is provided with an auxiliary nut, and the other end is threadedly connected with an auxiliary nut, the auxiliary bolt passes through the first positioning hole and the second positioning hole, the diameter of the auxiliary bolt, the diameter of the first positioning hole and the diameter of the second positioning hole are all equal, and the fixing ring and the movable ring are both located between the auxiliary nut and the auxiliary nut.

[0023] The present invention is further configured that an anti-slipping cylinder is arranged on the outer side of the fixing ring, a hexagonal anti-rotation groove is provided in the middle of the anti-slipping cylinder, the shape of the anti-rotation groove matches the shape of the anti-slipping nut, and an L-shaped engaging groove is also provided on the edge of the anti-slipping cylinder;

[0024] The auxiliary bolt is also rotatably provided with an anti-slip ring, and an anti-slip protrusion is provided on the outer side of the anti-slip ring. The anti-slip protrusion can be movably located at any position of the clamping groove, and when the anti-slip protrusion is clamped with the inner end of the clamping groove, the inner wall of the clamping groove can limit the movement of the anti-slip protrusion in the direction away from the fixing ring, and the two sides of the anti-slip ring are respectively attached to the fixing ring and the auxiliary nut;

[0025] The auxiliary bolt is provided with clearance grooves on both sides of one end away from the auxiliary nut, and elastic anti-slip strips are provided at the outer ends of the clearance grooves. The two sides of the auxiliary nut respectively abut against the movable ring and the free ends of the anti-slip strips. When the auxiliary nut passes through the anti-slip strips, the anti-slip strips can be driven to be stuck in the clearance grooves.

[0026] The present invention is further configured such that the adjustment mechanism comprises a first adjustment seat and a second adjustment seat, the first adjustment seat is located outside the fixed ring, the second adjustment seat is located outside the movable ring, and the first adjustment seat and the second adjustment seat are located between two adjacent spacer arms;

[0027] An adjusting screw is rotatably provided on the first adjusting seat, and a hexagonal adjusting portion is provided at one end of the adjusting screw. A movable hole is provided through the middle of the second adjusting seat, and long holes communicating with the movable hole are provided on both sides of the movable hole. The long holes are in the shape of long strips, and a linkage piece is provided in the movable hole. Cylindrical linkage arms are provided at both ends of the linkage piece, and the two linkage arms are movably fitted to the inner walls of the two long holes respectively, and the two sides of the linkage piece are movably fitted to the inner walls of the two sides of the movable hole, and the adjusting screw passes through the linkage piece and is threadedly engaged with the linkage piece.

[0028] The present invention is further configured such that the adjustment mechanism comprises an adjustment base arranged on the inner wall of the fixing ring, a cylindrical adjustment cavity is provided in the adjustment base, and a plurality of limit teeth are arranged in an annular shape in the adjustment cavity;

[0029] An adjustment column is horizontally arranged through the adjustment base, and the adjustment column is rotatably connected to the adjustment base. A fitting disk is arranged at one end of the adjustment column, and a driving gear is arranged at the other end. The fitting disk and the driving gear are movably fitted on both sides of the adjustment base, and a square driving hole is opened in the middle of a side of the driving gear away from the fitting disk;

[0030] The outer wall of the adjusting column is provided with a rectangular telescopic hole, and an elastic member which is continuously in a compressed state is arranged in the telescopic hole, and a telescopic member is arranged at the outer end of the elastic member, and the inner end of the telescopic member is movably fitted to the inner wall of the telescopic hole, and the outer end is inclined, and the outer end of the telescopic member can be engaged with any of the limiting teeth, and the inner wall of the movable ring is provided with a plurality of passive teeth meshed with the driving gear. When the driving gear drives the movable ring to rotate in the direction of clamping the cable through the passive teeth, the limiting teeth can act on the inclined part of the outer end of the telescopic member and drive the telescopic member to compress the elastic member. When the driving gear stops driving, the limiting teeth are in contact with the surface of the telescopic member, and the limiting teeth lock the telescopic member.

[0031] The present invention is further configured such that two telescopic members are provided on the adjusting column, and the two telescopic members are located on both sides of the adjusting column, the telescopic members are both made of magnetic materials, the inner ends of the two telescopic members are both N poles, and the outer ends are both S poles;

[0032] It also includes an unlocking rod, the adjusting column is provided with an unlocking hole for inserting the unlocking rod, the fitting disk is provided with a through opening for passing the unlocking rod, the inner end of the unlocking rod is an S pole, and the inner end of the unlocking rod is located between the two telescopic parts, and protective plugs are detachably provided in the through opening and the unlocking hole.

[0033] Compared with the prior art, the present invention provides a spacer rod for laying power cables. When workers use the spacer rod to space the cables, they first clamp the cables into the corresponding fixed buckles respectively, and make the cables fit on the first clamping part; then adjust the movable ring through the adjustment mechanism to rotate, wherein when the movable ring rotates, several movable columns are respectively limited by the guide holes, so that the movable ring and the fixed ring can only maintain a coaxial state for relative rotation; during the rotation of the movable ring, it can drive the articulated arm to move, and at the same time, when the articulated arm moves, it drives the sliding part to move toward the outside, and when the movable ring rotates to the end position, the articulated arm is parallel to the spacer arm, and the articulated arm is colinear with the sliding part, and finally the angle of the movable ring is fixed, and all the cables are clamped by the fixed ring and the movable ring, wherein both sides of the cable are clamped by the first clamping part and the second clamping part (both are preferably made of rubber material).

[0034] The end of the spacer arm of the current spacer bar usually includes two mutually hinged C-shaped clamping structures (whose inner wall has a C-shaped rubber tile), one of which is fixedly connected to the spacer arm, and the other is hinged to the end of the fixed clamping structure; when the cable is clamped, the cable is usually moved between the two clamping structures, and the movable clamping structure is rotated to clamp the cable through the two clamping structures, and then the bolt is passed through the two clamping structures, and finally the two clamping structures are tightened with nuts and bolts to clamp the cable. Since this type of spacer bar can only clamp one cable at a time, in actual operation, workers at high altitudes need to operate each spacer bar several times. For example, the spacers of six spacer arms need to be operated six times respectively, which is cumbersome and inefficient.

[0035] When using the spacer rod of the present application to clamp cables (preferably six cables), it is only necessary to sleeve all the cables into the first clamping part, rotate a movable ring to move all the movable fasteners, and then clamp all the cables through the movable fasteners and the fixed fasteners, thereby improving the convenience of installation and the efficiency of installation. Not only that, after the cables are clamped, the opening of the movable fastener faces outward, and the opening of the fixed fastener faces inward, and the sliding part and the articulated arm are in the same straight line, so the position stability of the cable in the direction of approaching and moving away from the fixed ring is guaranteed, and both sides of the cable are limited and clamped by the first clamping part and the second clamping part, so the position stability of the cable can also be guaranteed, and the fixed cable can be stably clamped and spaced apart. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention. Figure 1 ;

[0037] Figure 2 yes Figure 1 A magnified view of part A;

[0038] Figure 3 yes Figure 1 A magnified view of part B;

[0039] Figure 4 yes Figure 1 Enlarged view of part C;

[0040] Figure 5 This is a schematic diagram of the structure of the first embodiment of the present invention. Figure 2 ;

[0041] Figure 6 yes Figure 5 A magnified view of part D in the middle;

[0042] Figure 7 yes Figure 5 Enlarged view of part E in the middle;

[0043] Figure 8 is a schematic diagram of the fixing ring part in the first embodiment of the present invention;

[0044] Fig. 9 is a cross-sectional view of the fixing ring portion in the first embodiment of the present invention;

[0045] Fig.10 yes Fig. 9 Enlarged view of part F;

[0046] Fig.11 is a schematic diagram of the movable ring part in the first embodiment of the present invention;

[0047] Fig.12 yes Fig.11 Enlarged view of section G;

[0048] Fig.13 is a schematic diagram of the auxiliary bolt part in the first embodiment of the present invention;

[0049] Fig.14 It is a structural schematic diagram of Embodiment 2 of the present invention;

[0050] Fig.15 yes Fig.14 Enlarged view of section H;

[0051] Fig.16 is a cross-sectional view of Embodiment 2 of the present invention;

[0052] Fig.17 yes Fig.16 A magnified view of part I;

[0053] Fig.18 is a schematic diagram of the adjusting column part in the second embodiment of the present invention;

[0054] Fig.19 It is a schematic diagram of the interior of the adjusting column part in the second embodiment of the present invention.

[0055] Among them, 1. fixed ring; 2. guide hole; 3. movable ring; 4. movable column; 5. anti-slip disk; 6. spacer arm; 7. fixed buckle; 8. first clamping part; 9. sliding part; 10. movable buckle; 11. second clamping part; 12. hinged arm; 13. anti-slip groove; 14. movable groove; 15. connecting part; 16. anti-slip part; 17. extension part; 18. auxiliary buckle; 19. third clamping part; 20. anti-slip arm; 21. accommodating groove; 22. one-way part; 23. reset torsion spring; 24. termination slope; 25. first positioning hole; 26. second positioning hole; 27. auxiliary bolt; 28. auxiliary screw Cap; 29, auxiliary nut; 30, anti-slip cylinder; 31, anti-rotation groove; 32, engaging groove; 33, anti-slip ring; 34, anti-slip protrusion; 35, give way groove; 36, anti-slip strip; 37, first adjustment seat; 38, second adjustment seat; 39, adjusting screw; 40, adjusting part; 41, movable hole; 42, long hole; 43, linkage part; 44, linkage arm; 45, adjusting base; 46, adjusting cavity; 47, limiting tooth; 48, adjusting column; 49, fitting disk; 50, driving gear; 51, driving hole; 52, telescopic hole; 53, elastic part; 54, telescopic part; 55, passive tooth body; 56, unlocking hole. DETAILED DESCRIPTION

[0056] The following is a further detailed description of a spacer bar for laying power cables proposed by the present invention in combination with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. The same or similar reference numerals in the accompanying drawings represent the same or similar components.

[0057] Example 1

[0058] A spacer rod for laying power cables, such as Figures 1 to 13 As shown, including:

[0059] A fixing ring 1, through which a plurality of arc-shaped guide holes 2 are horizontally formed;

[0060] A movable ring 3, wherein the movable ring 3 is coaxial with the fixed ring 1, and the side of the movable ring 3 is movably attached to the fixed ring 1, and a plurality of movable columns 4 are provided on the side of the movable ring 3, and a free end of each movable column 4 is provided with an anti-slip disk 5, and each movable column 4 is movably attached to the inner wall of one of the guide holes 2, and the diameter of the anti-slip disk 5 is larger than the width of the guide hole 2, and the anti-slip disk 5 is movably attached to the side of the fixed ring 1 away from the movable ring 3;

[0061] Spacer arms 6, a plurality of the spacer arms 6 are evenly and divergently arranged on the outside of the fixing ring 1, and the length direction of each of the spacer arms 6 intersects with the axis of the fixing ring 1;

[0062] A fixed buckle 7, each of the free ends of the spacer arms 6 is provided with a fixed buckle 7, the fixed buckle 7 is C-shaped, the opening of the fixed buckle 7 faces the fixed ring 1, and the inner wall of the fixed buckle 7 is provided with a C-shaped first clamping portion 8;

[0063] A sliding member 9, wherein the sliding member 9 is movably connected to the spacer arm 6, and the sliding member 9 moves along the length direction of the spacer arm 6;

[0064] A movable fastening member 10, each of the outer ends of the sliding members 9 has a movable fastening member 10, the movable fastening member 10 is C-shaped, the opening direction of the movable fastening member 10 is opposite to the opening direction of the fixed fastening member 7, and the inner wall of the movable fastening member 10 is provided with a C-shaped second clamping portion 11;

[0065] an articulated arm 12, one end of which is hinged to the movable ring 3, and the other end of which is hinged to the inner end of the sliding member 9;

[0066] An adjusting mechanism, the adjusting mechanism is used to adjust the angle of the movable ring 3, the movable ring 3 includes a first state and a second state;

[0067] When the movable ring 3 is in the first state, the movable column 4 abuts against one end of the guide hole 2, an opening for a cable to be inserted is formed between the movable fastener 10 and the corresponding fixed fastener 7, and an obtuse angle is formed between the hinge arm 12 and the sliding member 9;

[0068] When the movable ring 3 is in the second state, the movable column 4 abuts against the other end of the guide hole 2, a space for clamping the cable is formed between the first clamping portion 8 and the second clamping portion 11, and the straight line where the articulated arm 12 is located is collinear with the straight line where the sliding member 9 is located.

[0069] An anti-slip groove 13 is provided in the spacer arm 6, a movable groove 14 is provided in the middle of the anti-slip groove 13, and the longitudinal section formed by the anti-slip groove 13 and the movable groove 14 is T-shaped. A connecting portion 15 is provided on the side of the sliding member 9, and an anti-slip portion 16 is provided at the free end of the connecting portion 15. The connecting portion 15 is movably matched with the movable groove 14, and the anti-slip portion 16 is movably matched with the anti-slip groove 13.

[0070] An extension portion 17 is provided at one end of the sliding member 9 close to the movable ring 3, and the articulated arm 12 is Z-shaped, and one end of the articulated arm 12 is hinged to the side of the movable ring 3 away from the fixed ring 1, and the two sides of the other end are respectively hinged to the extension portion 17 and the anti-slip portion 16, and the middle part is located on the outside of the movable ring 3.

[0071] An auxiliary fastener 18 is provided on one side of the fixed fastener 7 close to the movable fastener 10. The auxiliary fastener 18 is in a C-shape with its opening facing the movable fastener 10. A C-shaped third clamping portion 19 is provided on the inner wall of the auxiliary fastener 18. When the movable ring 3 is in the second state, the second clamping portion 11 and the third clamping portion 19 act on both sides of the cable.

[0072] The free end of the fixed buckle 7 is provided with an anti-slip arm 20, and the anti-slip arm 20 and the fixed buckle 7 form a J shape. The inner wall of the anti-slip arm 20 close to the movable buckle 10 is provided with a receiving groove 21, and a one-way member 22 is hingedly provided in the receiving groove 21. A return torsion spring 23 which is continuously in a compressed state is provided between the hinged end of the one-way member 22 and the inner wall of the receiving groove 21. The inner wall of the end of the receiving groove 21 away from the fixed buckle 7 is an inclined termination slope 24. When the cable and the one-way piece 22 are in a separated state, the outer side of the one-way piece 22 abuts against the terminating inclined surface 24. When the cable passes through the opening between the anti-drop arm 20 and the spacer arm 6, the cable can drive the one-way piece 22 to rotate into the accommodating groove 21, and the cable can be clamped into the first clamping portion 8. After the cable passes over the one-way piece 22, the one-way piece 22 rotates to fit the terminating inclined surface 24 under the elastic force of the return torsion spring 23, and plays a limiting role on the cable.

[0073] The free ends of the two anti-slip arms 20 at the top are inclined downward, and the inclination directions of the two anti-slip arms 20 at the top are opposite, and the free ends of all the other anti-slip arms 20 are inclined upward.

[0074] A first positioning hole 25 is formed through the fixed ring 1, and a second positioning hole 26 is formed through the movable ring 3. When the movable ring 3 is in the second state, the first positioning hole 25 is coaxial with the second positioning hole 26.

[0075] It also includes an auxiliary bolt 27, one end of which is provided with an auxiliary nut 28, and the other end is threadedly connected with an auxiliary nut 29, the auxiliary bolt 27 passes through the first positioning hole 25 and the second positioning hole 26, the diameter of the auxiliary bolt 27, the diameter of the first positioning hole 25 and the diameter of the second positioning hole 26 are all equal, and the fixed ring 1 and the movable ring 3 are both located between the auxiliary nut 28 and the auxiliary nut 29.

[0076] An anti-slip cylinder 30 is disposed on the outer side of the fixing ring 1, and a hexagonal anti-rotation groove 31 is provided in the middle of the anti-slip cylinder 30. The shape of the anti-rotation groove 31 matches the shape of the anti-slip nut. An L-shaped engaging groove 32 is also provided on the edge of the anti-slip cylinder 30.

[0077] The auxiliary bolt 27 is also rotatably provided with an anti-slip ring 33 (which can rotate relative to the auxiliary bolt 27 but cannot move axially relative to it), and an anti-slip protrusion 34 is provided on the outer side of the anti-slip ring 33, and the anti-slip protrusion 34 can be movably located at any position of the clamping groove 32, and when the anti-slip protrusion 34 is clamped with the inner end of the clamping groove 32, the inner wall of the clamping groove 32 can limit the movement of the anti-slip protrusion 34 in the direction away from the fixing ring 1, and the two sides of the anti-slip ring 33 are respectively attached to the fixing ring 1 and the auxiliary nut 28;

[0078] The auxiliary bolt 27 is provided with a clearance groove 35 on both sides of one end away from the auxiliary nut 28, and the outer ends of the clearance groove 35 are provided with elastic anti-slip strips 36. The two sides of the auxiliary nut 29 respectively abut against the movable ring 3 and the free ends of the anti-slip strip 36. When the auxiliary nut 29 passes through the anti-slip strip 36, the anti-slip strip 36 can be driven to be stuck in the clearance groove 35.

[0079] The adjustment mechanism comprises a first adjustment seat 37 and a second adjustment seat 38, wherein the first adjustment seat 37 is located outside the fixed ring 1, and the second adjustment seat 38 is located outside the movable ring 3, and the first adjustment seat 37 and the second adjustment seat 38 are located between two adjacent spacer arms 6;

[0080] An adjusting screw 39 is rotatably provided on the first adjusting seat 37, and a hexagonal adjusting portion 40 is provided at one end of the adjusting screw 39. A movable hole 41 is provided through the middle of the second adjusting seat 38, and long holes 42 communicating with the movable hole 41 are provided on both sides of the movable hole 41. The long holes 42 are in the shape of long strips, and a linkage member 43 is provided in the movable hole 41. Both ends of the linkage member 43 are provided with cylindrical linkage arms 44, and the two linkage arms 44 are movably fitted on the inner walls of the two long holes 42 respectively, and the two sides of the linkage member 43 are movably fitted on the inner walls of the two sides of the movable hole 41, and the adjusting screw 39 passes through the linkage member 43 and is threadedly engaged with the linkage member 43.

[0081] The present invention provides a spacer bar for laying power cables. When workers use the spacer bar to space cables, they first insert the cables into the corresponding fixed buckles 7 respectively, and make the cables fit on the first clamping part 8; then adjust the movable ring 3 to rotate through the adjustment mechanism, wherein when the movable ring 3 rotates, several movable columns 4 are respectively limited by the guide holes 2, so that the movable ring 3 and the fixed ring 1 can only maintain a coaxial state for relative rotation; during the rotation of the movable ring 3, it can drive the articulated arm 12 to move, and at the same time, when the articulated arm 12 moves, it drives the sliding member 9 to move toward the outside, and when the movable ring 3 rotates to the end position, the articulated arm 12 is parallel to the spacer arm 6, and the articulated arm 12 is colinear with the sliding member 9, and finally the angle of the movable ring 3 is fixed, and at this time, all the cables are clamped by the fixed ring 1 and the movable ring 3, and both sides of the cable are clamped by the first clamping part 8 and the second clamping part 11 (both are preferably made of rubber material).

[0082] The end of the spacer arm 6 of the current spacer bar usually includes two mutually hinged C-shaped clamping structures (whose inner wall has a C-shaped rubber tile), one of which is fixedly connected to the spacer arm 6, and the other is hinged to the end of the fixed clamping structure; when the cable is clamped, the cable is usually moved between the two clamping structures, and the movable clamping structure is rotated to clamp the cable through the two clamping structures, and then the bolt is passed through the two clamping structures, and finally the two clamping structures are tightened with nuts and bolts to clamp the cable. Since this type of spacer bar can only clamp one cable at a time, in actual operation, workers need to operate each spacer bar several times at high altitudes. For example, the spacers of six spacer arms 6 need to be operated six times respectively, which is cumbersome and inefficient.

[0083] When using the spacer bar of the present application to clamp cables (preferably six cables), it is only necessary to sleeve all the cables into the first clamping part 8, rotate a movable ring 3 to move all the movable fasteners 10, and then clamp all the cables through the movable fasteners 10 and the fixed fasteners 7, thereby improving the convenience of installation and the efficiency of installation. In addition, after the cables are clamped, the opening of the movable fastener 10 faces outward, and the opening of the fixed fastener 7 faces inward. At the same time, the sliding part 9 and the articulated arm 12 are in the same straight line, so that the position stability of the cable in the direction of approaching and moving away from the fixed ring 1 is guaranteed. At the same time, both sides of the cable are limited and clamped by the first clamping part 8 and the second clamping part 11, so the position stability of the cable can also be guaranteed, and the fixed cable can be stably clamped and spaced apart.

[0084] During actual operation, the worker first buckles the two top fixing fasteners 7 onto the two cables on the top. At this time, the worker does not need to bear the weight of the entire spacer bar, which can facilitate subsequent operations. The openings of the two top fixing fasteners 7 are facing outward, and the two top anti-slip arms 20 are also facing outward. In this way, after the spacer bar is hung and buckled onto the two top cables, the fixing fasteners 7 can be better prevented from separating from the top cables, ensuring operational stability. At the same time, when the cable is inserted into the corresponding fixing fastener 7, the cable will first contact the outer side of the one-way member 22 in an inclined state during the movement, and drive the one-way member 22 to rotate, and cause the reset torsion spring 23 to undergo further elastic deformation, and cause the one-way member 22 to be inserted into the accommodating groove 21, so that the cable can pass between the anti-slip arm 20 and the spacer arm 6;

[0085] When the cable passes over the one-way piece 22 and is clamped into the second clamping portion 11, the one-way piece 22 rebounds under the elastic force of the return torsion spring 23, and the outer side of the one-way piece 22 hits the terminating slope 24. At this time, the one-way piece 22 is still inclined toward the cable and can prevent the cable from detaching from the fixed buckle 7; when the one-way piece 22 is actually used, it only needs to limit the cable several times or for several periods of time, so there are lower requirements for its strength and service life.

[0086] Moreover, since the anti-slip arm 20 lengthens the free end of the fixed buckle 7, when the cable is inserted into the first clamping portion 8, the anti-slip arm 20 can also play a guiding role, making it easier for the cable to be inserted into the first clamping portion 8. At the same time, since the anti-slip arm 20 lengthens the fixed buckle 7 and the anti-slip arm 20 is tilted downward, it can further prevent the top cable from slipping out of the fixed buckle 7 (before the cable is clamped).

[0087] After the positions of the two cables on the top are stabilized, the remaining anti-slip arms 20 are tilted upward, which makes it easy to clamp the other cables into the corresponding first clamping parts 8; during actual operation, the workers step on the two cables at the bottom, so the two anti-slip arms 20 at the bottom can be stably engaged with the two cables at the bottom; and the two cables at both sides are not subject to other forces, so the one-way piece 22 can play a limiting role.

[0088] When all cables are inserted into the corresponding first clamping part 8, the worker uses a wrench or other tool to rotate the adjustment part 40, and the adjustment part 40 drives the adjustment screw 39 to rotate; the position between the adjustment screw 39 and the first adjustment seat 37 is relatively fixed, and the two can only rotate relative to each other; the adjustment screw 39 pulls the linkage member 43 toward the first adjustment seat 37 during the rotation process, and the linkage member 43 approaches the first adjustment seat 37 through the second adjustment seat 38 through the linkage arm 44, so that the movable ring 3 rotates relative to the fixed ring 1, and during the rotation process, the sliding member 9 is driven to move toward the fixed buckle 7 through the articulated arm 12, until the sliding member 9 and the articulated arm 12 are in the same straight line. When clamping the cable, the first clamping part 8, the second clamping part 11 and the third clamping part 19 are all interference fit with the cable.

[0089] When the cable is clamped, the first positioning hole 25 is connected to the second positioning hole 26. At this time, the worker passes the auxiliary bolt 27 through the first positioning hole 25 and the second positioning hole 26. During the passing process, the anti-slip strip 36 is driven by the inner walls of the first positioning hole 25 and the second positioning hole 26, and after elastic deformation, it is stuck in the makeshift groove 35, allowing the auxiliary bolt 27 to pass through the first positioning hole 25 and the second positioning hole 26.

[0090] In the process of moving the auxiliary bolt 27, the anti-slip ring 33 first enters the anti-rotation groove 31, and the anti-slip protrusion 34 enters the engaging groove 32; until the anti-slip ring 33 contacts the fixing ring 1, the anti-slip protrusion 34 is rotated so that the anti-slip protrusion 34 is engaged with the bent part at the end of the engaging groove 32, and the auxiliary nut 28 is also attached to the inner wall of the anti-rotation groove 31 at this time;

[0091] Then the worker threadably connects the auxiliary nut 29 to the free end of the auxiliary bolt 27. During the rotation of the auxiliary nut 29, the inner wall of the bent part of the engaging groove 32 limits the anti-slip protrusion 34, thereby preventing the auxiliary bolt 27 from falling out of the first positioning hole 25 and the second positioning hole 26. At the same time, since the anti-rotation groove 31 can limit the auxiliary nut 28, the auxiliary bolt 27 cannot rotate. That is, the auxiliary bolt 27 at this time can neither move outward nor rotate, so the connection of the auxiliary nut 29 is simple and convenient, and there is no need to use tools such as wrenches to maintain the position of the auxiliary nut 28.

[0092] Moreover, during the movement, the auxiliary nut 29 will first press down the anti-slip strip 36 and make the anti-slip strip 36 enter the make way groove 35. When the auxiliary nut 29 and the auxiliary nut 28 clamp the fixing ring 1 and the guide ring, the auxiliary nut 29 just passes over the free end of the anti-slip strip 36. At this time, the free end of the anti-slip strip 36 pops outward and abuts against the outside of the auxiliary nut 29, or plays a limiting role on the outside of the auxiliary nut 29, thereby ensuring the position of the auxiliary bolt 27. At the same time, it also makes it possible to fully maintain the position stability between the fixing ring 1 and the movable ring 3, thereby improving the strength of the fixing ring 1 and the movable ring 3, and ensuring the service life of the spacer rod.

[0093] When the cable is clamped, the third clamping part 19 is opposite to the second clamping part 11, that is, the second clamping part 11 acts on the inner side of the cable, and the first clamping part 8 and the third clamping part 19 act on the outer side of the cable. This not only improves the connection stability between the spacer rod and the cable, but also prevents the movable fastener 10 from being subjected to lateral torque, and also prevents the spacer arm 6 from being subjected to lateral torque (the anti-slip part 16 is fastened in the anti-slip groove 13. If the movable fastener 10 is subjected to lateral stress, the anti-slip part 16 will apply lateral force to the inner wall of the anti-slip groove 13 at the same time), thereby ensuring the service life of the spacer arm 6.

[0094] The cross section formed by the connecting portion 15 and the anti-slip portion 16, and the cross section formed by the anti-slip groove 13 and the movable groove 14 are all T-shaped, so that the sliding member 9 can stably slide along the length direction of the spacer arm 6. At the same time, the two sides of the outer end of the articulated arm 12 are respectively hinged by the anti-slip portion 16 and the extension portion 17, so as to ensure the position stability of the articulated arm 12 and the stability of the driving of the sliding member 9.

[0095] Example 2

[0096] The difference from the first embodiment is that, Figures 14 to 19 As shown, the adjustment mechanism includes an adjustment base 45 arranged on the inner wall of the fixing ring 1, a cylindrical adjustment cavity 46 is provided in the adjustment base 45, and a plurality of limiting teeth 47 are arranged in an annular shape in the adjustment cavity 46;

[0097] An adjustment column 48 is horizontally provided through the adjustment base 45, and the adjustment column 48 is rotatably connected to the adjustment base 45. A fitting disk 49 is provided at one end of the adjustment column 48, and a driving gear 50 is provided at the other end. The fitting disk 49 and the driving gear 50 are movably fitted on both sides of the adjustment base 45, and a square driving hole 51 is provided in the middle of one side of the driving gear 50 away from the fitting disk 49.

[0098] A rectangular telescopic hole 52 is provided on the outer wall of the adjusting column 48, and an elastic member 53 which is continuously in a compressed state is arranged in the telescopic hole 52. A telescopic member 54 is provided on the outer end of the elastic member 53. The inner end of the telescopic member 54 is movably fitted to the inner wall of the telescopic hole 52, and the outer end is inclined. The outer end of the telescopic member 54 can be engaged with any of the limiting teeth 47. The inner wall of the movable ring 3 is provided with a plurality of passive tooth bodies 55 which are engaged with the driving gear 50. When the driving gear 50 drives the movable ring 3 to rotate in the direction of clamping the cable through the passive tooth bodies 55, the limiting teeth 47 can act on the inclined part of the outer end of the telescopic member 54 and drive the telescopic member 54 to compress the elastic member 53. When the driving gear 50 stops driving, the limiting teeth 47 are in contact with the surface of the telescopic member 54, and the limiting teeth 47 lock the telescopic member 54.

[0099] Two telescopic members 54 are provided on the adjusting column 48, and the two telescopic members 54 are located on both sides of the adjusting column 48. The telescopic members 54 are made of magnetic materials, and the inner ends of the two telescopic members 54 are both N poles, and the outer ends are both S poles;

[0100] It also includes an unlocking rod, and the adjusting column 48 is provided with an unlocking hole 56 for inserting the unlocking rod, and the fitting disk 49 is provided with a through opening for the unlocking rod to pass through, the inner end of the unlocking rod is an S pole, and the inner end of the unlocking rod is located between the two telescopic parts 54, and protective plugs are detachably provided in the through opening and the unlocking hole 56.

[0101] After the cables are inserted into the corresponding first clamping parts 8, the worker inserts an L-shaped wrench (square in cross section) into the driving hole 51, and rotates the driving gear 50 by means of the wrench (lever principle, which is more labor-saving). The driving gear 50 drives the movable ring 3 to rotate through the passive tooth body 55, and causes the movable fastener 10 to move outward, until the cables are finally clamped, and then the auxiliary bolts 27 are used to fix the angles of the fixed ring 1 and the movable ring 3.

[0102] In the process of rotating the driving gear 50, since the driving gear 50 has a smaller diameter, the movable ring 3 has a larger diameter, and a wrench is used for operation, the operation can be made more labor-saving and convenient; at the same time, the adjusting column 48 is driven by the driving gear 50 to rotate, and the adjusting column 48 drives the two telescopic members 54 to rotate, but at the same time, since the fixed ring 1 maintains an unchanged angle, the telescopic member 54 and the limiting tooth 47 can rotate relative to each other; since the longitudinal section of the limiting tooth 47 is a triangle (preferably a right triangle), and the outer end of the telescopic member 54 is also inclined, At this time, the limiting tooth 47 fixed in position can act on the inclined part of the outer end of the telescopic member 54, drive the telescopic member 54 inward to move, and make the telescopic member 54 further compress the elastic member 53, and after the elastic member 53 is compressed and the telescopic member 54 moves toward the telescopic hole 52, the telescopic member 54 can pass over the limiting tooth 47 at this time, so that in the process of clamping the cable, the telescopic member 54 can not be affected by the limiting tooth 47, that is, the limiting tooth 47 does not limit the telescopic member 54 at this time, so that the movable ring 3 can rotate normally and clamp the cable normally.

[0103] When the cable is just clamped, the telescopic member 54 just passes over a certain limiting tooth 47, and the outer end of the telescopic member 54, the side away from the inclined portion, is in contact with the outer right-angle side of the limiting tooth 47, that is, the limiting tooth 47 and the telescopic member 54 are in contact with each other, so that the limiting tooth 47 can limit the telescopic member 54, so that the movable ring 3 cannot move relative to the fixed ring 1 in the direction of loosening the cable, so that the auxiliary bolt 27 can be easily operated; whether it is embodiment 1 or embodiment 2, the auxiliary bolt 27 is used to stably support the fixed ring 1 and the guide ring. However, the adjusting screw 39 in embodiment 1 and the telescopic member 54 and the limiting tooth 47 in embodiment 2 can all play a role in assisting in improving the position stability of the fixed ring 1 and the movable ring 3.

[0104] Moreover, since the two telescopic parts 54 are made of magnetic materials, and both outer ends are S poles and inner ends are N poles, a repulsive force will be generated between the inner end N poles of the two telescopic parts 54, and both telescopic parts 54 have an outward force, so that the telescopic parts 54 can stably act on the limit tooth 47.

[0105] When removing the spacer rod, (in both embodiments 1 and 2), the anti-slip strip 36 must be pressed inward first, and then the auxiliary nut 29 is rotated. After the auxiliary nut 29 is disengaged from the auxiliary bolt 27, the anti-slip protrusion 34 is rotated so that the anti-slip protrusion 34 enters the straight part of the engaging groove 32, and then the anti-slip strip 36 is pressed to remove the auxiliary bolt 27 from the first positioning hole 25 and the second positioning hole 26.

[0106] Then take out the protective plug (made of rubber, preferably with interference fit with the through-port and the unlocking hole 56, and its outer end is located outside the fitting disk 49), and insert the S-level unlocking rod (preferably made of strong magnetic material) through the through-port and into the unlocking hole 56. At this time, under the action of the strong magnetic force of the unlocking rod, the two telescopic parts 54 are close to each other and separated at the limiting teeth 47. At this time, the driving gear 50 can be directly rotated, so that the movable ring 3 can rotate relative to the fixed ring 1, and the movable buckle 10 moves inward to release the cable.

[0107] In another embodiment, the telescopic members 54 are all made of stainless steel and can also be unlocked by an unlocking rod.

[0108] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A spacer bar for laying power cables, characterized in that: include: A fixing ring (1), through which a plurality of arc-shaped guide holes (2) are horizontally formed; A movable ring (3), wherein the movable ring (3) is coaxial with the fixed ring (1), and the side of the movable ring (3) is movably fitted to the fixed ring (1), and a plurality of movable columns (4) are provided on the side of the movable ring (3), and a free end of each movable column (4) is provided with an anti-slip disk (5), and each movable column (4) is movably fitted to the inner wall of one of the guide holes (2), and the diameter of the anti-slip disk (5) is larger than the width of the guide hole (2), and the anti-slip disk (5) is movably fitted to the side of the fixed ring (1) away from the movable ring (3); Spacer arms (6), a plurality of the spacer arms (6) are evenly and divergently arranged on the outer side of the fixing ring (1), and the length direction of each of the spacer arms (6) intersects with the axis of the fixing ring (1); A fixed buckle (7), wherein the free end of each of the spacer arms (6) is provided with a fixed buckle (7), the fixed buckle (7) is C-shaped, the opening of the fixed buckle (7) faces the fixed ring (1), and the inner wall of the fixed buckle (7) is provided with a C-shaped first clamping portion (8); A sliding member (9), the sliding member (9) is movably connected to the spacer arm (6), and the sliding member (9) moves along the length direction of the spacer arm (6); A movable fastening member (10), each of the outer ends of the sliding members (9) having a movable fastening member (10), the movable fastening member (10) being C-shaped, the opening direction of the movable fastening member (10) being opposite to the opening direction of the fixed fastening member (7), and the inner wall of the movable fastening member (10) being provided with a C-shaped second clamping portion (11); an articulated arm (12), one end of the articulated arm (12) being articulated to the movable ring (3), and the other end of the articulated arm (12) being articulated to the inner end of the sliding member (9); An adjustment mechanism, the adjustment mechanism being used to adjust the angle of the movable ring (3), the movable ring (3) comprising a first state and a second state; When the movable ring (3) is in the first state, the movable column (4) contacts one end of the guide hole (2), an opening for a cable to be inserted is formed between the movable buckle (10) and the corresponding fixed buckle (7), and an obtuse angle is formed between the hinge arm (12) and the sliding member (9); When the movable ring (3) is in the second state, the movable column (4) contacts the other end of the guide hole (2), a space for clamping the cable is formed between the first clamping portion (8) and the second clamping portion (11), and the straight line where the articulated arm (12) is located is collinear with the straight line where the sliding member (9) is located.

2. A spacer rod for laying power cables according to claim 1, characterized in that: The spacer arm (6) is provided with an anti-slip groove (13), a movable groove (14) is provided in the middle of the anti-slip groove (13), and the longitudinal section formed by the anti-slip groove (13) and the movable groove (14) is T-shaped. The side of the sliding member (9) is provided with a connecting portion (15), and the free end of the connecting portion (15) is provided with an anti-slip portion (16), the connecting portion (15) is movably matched with the movable groove (14), and the anti-slip portion (16) is movably matched with the anti-slip groove (13).

3. A spacer rod for laying power cables according to claim 2, characterized in that: An extension portion (17) is provided at one end of the sliding member (9) close to the movable ring (3); the hinged arm (12) is Z-shaped, and one end of the hinged arm (12) is hinged to the side of the movable ring (3) away from the fixed ring (1), and the two sides of the other end are respectively hinged to the extension portion (17) and the anti-slip portion (16), and the middle part is located on the outside of the movable ring (3).

4. A spacer rod for laying power cables according to claim 1, characterized in that: An auxiliary fastener (18) is provided on one side of the fixed fastener (7) close to the movable fastener (10); the auxiliary fastener (18) is in a C-shape with its opening facing the movable fastener (10); a C-shaped third clamping portion (19) is provided on the inner wall of the auxiliary fastener (18); when the movable ring (3) is in the second state, the second clamping portion (11) and the third clamping portion (19) act on both sides of the cable.

5. The spacer rod for laying power cables according to claim 1, characterized in that: The free end of the fixed buckle (7) is provided with an anti-slip arm (20), and the anti-slip arm (20) and the fixed buckle (7) form a J-shape. The inner wall of the anti-slip arm (20) close to the movable buckle (10) is provided with a receiving groove (21), and a one-way member (22) is hingedly provided in the receiving groove (21). A return torsion spring (23) which is continuously in a compressed state is provided between the hinged end of the one-way member (22) and the inner wall of the receiving groove (21). The inner wall of the end of the receiving groove (21) away from the fixed buckle (7) is an inclined termination slope (21). 4) When the cable and the one-way piece (22) are in a separated state, the outer side of the one-way piece (22) contacts the end inclined surface (24). When the cable passes through the opening between the anti-slip arm (20) and the spacer arm (6), the cable can drive the one-way piece (22) to rotate into the accommodating groove (21), and the cable can be clamped into the first clamping portion (8). After the cable passes over the one-way piece (22), the one-way piece (22) rotates to fit the end inclined surface (24) under the elastic force of the return torsion spring (23), and plays a limiting role on the cable. The free ends of the two anti-slip arms (20) at the top are inclined downward, and the inclination directions of the two anti-slip arms (20) at the top are opposite, and the free ends of all other anti-slip arms (20) are inclined upward.

6. A spacer rod for laying power cables according to claim 1, characterized in that: A first positioning hole (25) is formed through the fixed ring (1), and a second positioning hole (26) is formed through the movable ring (3); when the movable ring (3) is in the second state, the first positioning hole (25) and the second positioning hole (26) are coaxial; It also includes an auxiliary bolt (27), one end of which is provided with an auxiliary nut (28), and the other end of which is threadedly connected with an auxiliary nut (29), the auxiliary bolt (27) passes through the first positioning hole (25) and the second positioning hole (26), the diameter of the auxiliary bolt (27), the diameter of the first positioning hole (25) and the diameter of the second positioning hole (26) are all equal, and the fixed ring (1) and the movable ring (3) are both located between the auxiliary nut (28) and the auxiliary nut (29).

7. A spacer rod for laying power cables according to claim 6, characterized in that: An anti-slip cylinder (30) is arranged on the outer side of the fixing ring (1), a hexagonal anti-rotation groove (31) is provided in the middle of the anti-slip cylinder (30), the shape of the anti-rotation groove (31) matches the shape of the auxiliary nut (28), and an L-shaped engaging groove (32) is also provided on the edge of the anti-slip cylinder (30); The auxiliary bolt (27) is also rotatably provided with an anti-slip ring (33), and an anti-slip protrusion (34) is provided on the outer side of the anti-slip ring (33). The anti-slip protrusion (34) can be movably located at any position of the engaging groove (32), and when the anti-slip protrusion (34) is engaged with the inner end of the engaging groove (32), the inner wall of the engaging groove (32) can limit the movement of the anti-slip protrusion (34) in a direction away from the fixing ring (1), and the two sides of the anti-slip ring (33) are respectively attached to the fixing ring (1) and the auxiliary nut (28); The auxiliary bolt (27) is provided with a clearance groove (35) on both sides of one end away from the auxiliary nut (28), and the outer end of the clearance groove (35) is provided with an elastic anti-slipping strip (36). The two sides of the auxiliary nut (29) are respectively in contact with the movable ring (3) and the free end of the anti-slipping strip (36). When the auxiliary nut (29) passes through the anti-slipping strip (36), the anti-slipping strip (36) can be driven to be stuck in the clearance groove (35).

8. The spacer rod for laying power cables according to claim 1, characterized in that: The adjustment mechanism comprises a first adjustment seat (37) and a second adjustment seat (38), wherein the first adjustment seat (37) is located outside the fixed ring (1), the second adjustment seat (38) is located outside the movable ring (3), and the first adjustment seat (37) and the second adjustment seat (38) are located between two adjacent spacer arms (6); An adjusting screw (39) is rotatably arranged on the first adjusting seat (37), one end of the adjusting screw (39) is provided with a hexagonal adjusting portion (40), a movable hole (41) is provided through the middle of the second adjusting seat (38), both sides of the movable hole (41) are provided with long holes (42) communicating with the movable hole (41), the long holes (42) are in the shape of long strips, a linkage piece (43) is arranged in the movable hole (41), both ends of the linkage piece (43) are provided with cylindrical linkage arms (44), the two linkage arms (44) are movably fitted to the inner walls of the two long holes (42), the two sides of the linkage piece (43) are movably fitted to the inner walls of the two sides of the movable hole (41), the adjusting screw (39) passes through the linkage piece (43) and is threadedly engaged with the linkage piece (43).

9. The spacer rod for laying power cables according to claim 1, characterized in that: The adjustment mechanism comprises an adjustment base (45) arranged on the inner wall of the fixing ring (1), a cylindrical adjustment cavity (46) is provided in the adjustment base (45), and a plurality of limiting teeth (47) are arranged in an annular shape in the adjustment cavity (46); An adjusting column (48) is horizontally arranged through the adjusting base (45), and the adjusting column (48) is rotatably connected to the adjusting base (45). A fitting disk (49) is arranged at one end of the adjusting column (48), and a driving gear (50) is arranged at the other end. The fitting disk (49) and the driving gear (50) are movably fitted on both sides of the adjusting base (45), and a square driving hole (51) is opened in the middle of a side of the driving gear (50) away from the fitting disk (49); The outer wall of the adjusting column (48) is provided with a rectangular telescopic hole (52), and an elastic member (53) which is continuously in a compressed state is arranged in the telescopic hole (52). A telescopic member (54) is arranged at the outer end of the elastic member (53). The inner end of the telescopic member (54) is movably fitted to the inner wall of the telescopic hole (52), and the outer end is inclined. The outer end of the telescopic member (54) can be meshed with any of the limiting teeth (47). The inner wall of the movable ring (3) is provided with a plurality of teeth which are in contact with the driving gear (50). The passive tooth body (55) is meshed with the movable ring (3). When the driving gear (50) drives the movable ring (3) to rotate in the direction of clamping the cable through the passive tooth body (55), the limiting tooth (47) can act on the inclined part of the outer end of the telescopic member (54) and drive the telescopic member (54) to compress the elastic member (53). When the driving of the driving gear (50) stops, the limiting tooth (47) is in contact with the surface of the telescopic member (54) and the limiting tooth (47) locks the telescopic member (54).

10. A spacer rod for laying power cables according to claim 9, characterized in that: Two telescopic members (54) are provided on the adjusting column (48), and the two telescopic members (54) are located on both sides of the adjusting column (48). The telescopic members (54) are both made of magnetic material, and the inner ends of the two telescopic members (54) are both N poles, and the outer ends are both S poles; It also includes an unlocking rod, the adjusting column (48) is provided with an unlocking hole (56) for inserting the unlocking rod, the fitting disk (49) is provided with a through opening for passing the unlocking rod, the inner end of the unlocking rod is an S pole, and the inner end of the unlocking rod is located between the two telescopic parts (54), and protective plugs are detachably provided in the through opening and the unlocking hole (56).

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