Pre-twisted three-span reinforced strain clamp

Abstract

The invention provides a pre-twisted three-span reinforced strain clamp, and relates to the overhead line equipment technology, the pre-twisted three-span reinforced strain clamp comprises a DB adjusting plate, a connecting assembly arranged on the DB adjusting plate and a traction assembly arranged on the connecting assembly, the DB adjusting plate is also provided with a load assembly, and the traction assembly is internally provided with a fixing assembly. Through arrangement of the connecting assembly, the traction assembly, the fixing assembly and the locking assembly, fixation of the wire is realized, falling of the end part of the wire when the load assembly is broken can be effectively avoided, so that the situation of safety accidents caused by contact between the end part and an object or personnel is effectively avoided, and meanwhile, due to the fact that traction force still exists on the wire after the wire is broken, the safety of the wire is improved. Therefore, a worker can perform overhead connection more conveniently, and the problem that in the prior art, due to the fact that an overhead wire is large in tension and is affected by aeolian vibration or icing for a long time, the wire is prone to fatigue strand breakage and even fracture accidents at the wire outlet position of the compressed strain clamp is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of overhead line equipment, and in particular, to a preformed three-span reinforced strain clamp. Background Art

[0002] When erecting a transmission line, a compression strain clamp is required at the connection between the conductor and the tower.

[0003] However, due to the large tension of the overhead conductor itself in the prior art and the long-term influence of micro-vibration or icing, it is very easy for the conductor to have fatigue strand breaks or even fracture accidents at the outlet of the compression strain clamp. These all seriously affect the service life of the overhead line, causing power outage accidents. If there are high-speed railways or other important building facilities below the overhead conductor, once the conductor breaks, it will cause major injury accidents.

[0004] Therefore, we make improvements on this and propose a preformed three-span reinforced strain clamp. Summary of the Invention

[0005] The purpose of the present invention is to provide a preformed three-span reinforced strain clamp, by setting the problems that in the prior art, due to the large tension of the overhead conductor itself and the long-term influence of micro-vibration or icing, it is very easy for the conductor to have fatigue strand breaks or even fracture accidents at the outlet of the compression strain clamp. These all seriously affect the service life of the overhead line, causing power outage accidents. If there are high-speed railways or other important building facilities below the overhead conductor, once the conductor breaks, it will cause major injury accidents.

[0006] In order to achieve the above-mentioned invention purpose, the present invention provides the following technical solutions: A preformed three-span reinforced strain clamp includes a DB adjustment plate, a connection component arranged on the DB adjustment plate, and a traction component arranged on the connection component. A load component is also arranged on the DB adjustment plate; A fixing component is arranged inside the traction component, and a locking component is arranged on the fixing component.

[0007] As a preferred technical solution of the present application, positioning holes are formed on the DB adjustment plate. The number of the positioning holes is three, and the three positioning holes are evenly and equidistantly distributed at the edge of the DB adjustment plate. The connection component includes a right-angle hanging plate that is movably clamped on the DB adjustment plate. The right-angle hanging plate is aligned with the positioning holes and is movably connected with positioning bolts.

[0008] As a preferred technical solution of the present application, one side of the right-angle hanging plate is movably clamped with a connecting plate and fixedly connected by bolts. At the two corners on one side of the connecting plate, U-shaped rings are respectively clamped. An extension pull rod is sleeved on the U-shaped ring. One end of the extension pull rod penetrates and is clamped with a pull plate and fixed by a nut. One side of the pull plate is fixedly connected with a connecting plate. A limiting hole is opened at one end of the connecting plate, and a shell is movably clamped through the limiting hole.

[0009] As a preferred technical solution of the present application, the traction assembly includes a lower composite plate arranged inside the shell. An upper composite plate is arranged above the lower composite plate. One end of the lower composite plate is fixedly connected with a connecting frame. A driving wheel is movably clamped on the connecting frame. Between the lower composite plate and the upper composite plate and simultaneously located on the driving wheel, the same wire is movably clamped.

[0010] As a preferred technical solution of the present application, the load assembly includes a U-shaped hanging ring movably clamped on the DB adjusting plate and fixedly connected by bolts. One end of the U-shaped hanging ring is movably clamped with a strain clamp. One end of the strain clamp is fixedly connected with a wire. One end of the wire penetrates between the lower composite plate and the upper composite plate and is simultaneously connected to the shell.

[0011] As a preferred technical solution of the present application, the fixing assembly includes a combination piece fixedly connected to both sides of the inner top wall and the inner bottom wall of the shell. On both sides of each combination piece, a limiting piece is clamped. At the clamping position of each group of combination pieces and the limiting piece, a through hole is opened. The combination piece and the limiting piece are movably clamped with a sleeve through the through hole. The sleeves are divided into two groups. On one side of each group of sleeves, a clamping pipe is movably clamped. At the ends of each group of sleeves and the clamping pipes away from each other, a linkage plate is fixedly connected. The bottom of the limiting piece is fixedly connected to the lower surface of the lower composite plate / the upper surface of the upper composite plate.

[0012] As a preferred technical solution of the present application, the locking assembly includes a bearing piece fixedly connected to both sides of the lower composite plate and the upper composite plate. On the upper surface of the bearing piece located on the lower composite plate, locking columns are fixedly connected. On both sides of the outer arc surface of the locking column, meshing teeth are opened. On the bearing piece located on the upper composite plate, a hole adapted to the locking column is opened.

[0013] As a preferred technical solution of the present application, the locking assembly further includes a sleeve fixedly connected to the upper surface of the bearing piece. On both sides of the inner arc surface of the sleeve, installation grooves are opened. One side of the inner side wall of the installation groove penetrates and is clamped with a transmission piece. One end of the transmission piece is fixedly connected with a blocking plate. In the middle of one side surface of the blocking plate, a tooth block is fixedly connected. The tooth Block meshes with the locking column through the meshing teeth.

[0014] As a preferred technical solution of the present application, a spring is fixedly installed on the inner side wall of the installation groove and one side of the partition plate. The spring is sleeved on the transmission member, and a reinforcing member is movably clamped at one end of the transmission member. Clamping grooves are formed on both sides of the outer arc surface of the sleeve, and the clamping grooves are adapted to the reinforcing member.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In the solution of the present application: 1. By providing a connection component, a traction component, a fixing component and a locking component, the fixing of the wire is realized, which can effectively prevent the end of the wire from falling when the load component breaks, thus effectively avoiding the occurrence of safety accidents caused by the contact between the end and objects or personnel. At the same time, since there is still a traction force on the wire after the wire breaks, it is more convenient for the staff to carry out overhead connection, solving the problems in the prior art that due to the large tension of the overhead wire itself and the long-term influence of micro-vibration or icing, the wire is prone to fatigue strand breakage or even fracture accidents at the outlet of the compression strain clamp, which seriously affects the service life of the overhead line and causes power outage accidents. If there are high-speed rails or other important building facilities under the overhead wire, once the wire breaks, it will cause major injury accidents; 2. By providing the load component, the traction of the wire is realized, thereby ensuring the stability of the wire, avoiding the torsion of the wire caused by micro-vibration, and then generating a rotational force, which in turn affects the normal service life of the wire, solving the problem in the prior art that due to the large tension of the overhead wire itself and the long-term influence of micro-vibration or icing, the wire is extremely prone to torsion, and then generates a rotational force, which in turn affects the normal service life of the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is one of the overall structural schematic diagrams of a pre-twisted three-span reinforced strain clamp provided by the present application; Figure 2 It is the second of the overall structural schematic diagrams of a pre-twisted three-span reinforced strain clamp provided by the present application; Figure 3 It is the partial disassembled structural schematic diagram of a pre-twisted three-span reinforced strain clamp provided by the present application; Figure 4 It is the structural schematic diagram inside the shell of a pre-twisted three-span reinforced strain clamp provided by the present application; Figure 5 It is the sectional structural schematic diagram of the shell of a pre-twisted three-span reinforced strain clamp provided by the present application; Figure 6 It is the disassembled structural schematic diagram of the fixing component of a pre-twisted three-span reinforced strain clamp provided by the present application; Figure 7Schematic diagram of the disassembled structure of the preformed three-span reinforced strain clamp sleeve and the locking column provided by this application; Figure 8 Schematic diagram of the sectional structure of the preformed three-span reinforced strain clamp sleeve provided by this application.

[0017] Labels in the figure: 1. DB adjusting plate; 2. Connection assembly; 21. Right-angle hanging plate; 22. Linking plate; 23. U-shaped ring; 24. Extension pull rod; 25. Pulling plate; 26. Connection plate; 27. Housing; 3. Traction assembly; 31. Lower combined plate; 32. Upper combined plate; 33. Connection frame; 34. Driving wheel; 4. Load assembly; 41. U-shaped hanging ring; 42. Strain clamp; 43. Conducting wire; 5. Fixing assembly; 51. Assembly; 52. Limiting part; 53. Through hole; 54. Clamping pipe; 55. Linking plate; 56. Sleeve; 6. Locking assembly; 61. Bearing part; 62. Locking column; 63. Meshing teeth; 64. Hole; 65. Sleeve; 66. Installation groove; 67. Transmission part; 68. Partition board; 69. Tooth Block ; 610. Spring; 611. Reinforcing part; 612. Clamping groove; 7. Positioning hole. Detailed implementation manners

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention.

[0019] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed present invention, but merely represents some embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0020] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms 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 should not be construed as a limitation on the present invention. In addition, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0023] Please refer to Figures 1 to 8 , the present invention provides a technical solution: a pre-twisted three-span reinforced strain clamp, Embodiment 1: As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown in

[0024] Embodiment 2: As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown in

[0025] Exemplarily, the staff member snaps the right-angle hanger 21 onto the DB adjustment plate 1, then installs the positioning bolt in the positioning hole 7. At this time, the fixation of the right-angle hanger 21 is completed. Subsequently, the connecting plate 22 is installed on the right-angle hanger 21 through bolts. At this time, the extension pull rod 24 is sleeved on the U-shaped ring 23, and then the U-shaped ring 23 is snapped onto the connecting plate 22. At this time, the U-shaped ring 23 is fixed through bolts, and then the extension pull rod 24 is passed through the pull plate 25, and the extension pull rod 24 is fixed through a nut. At this time, the housing 27 with the wire fixed can be towed and suspended.

[0026] Embodiment 3: As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 shown, as a preferred embodiment, on the basis of the above method, further, the traction assembly 3 includes a lower combining plate 31 arranged inside the housing 27. Above the lower combining plate 31 is provided an upper combining plate 32. One end of the lower combining plate 31 is fixedly connected to a connecting frame 33. A driving wheel 34 is movably snapped onto the connecting frame 33. Between the lower combining plate 31 and the upper combining plate 32, and simultaneously on the driving wheel 34, the same wire 43 is movably snapped.

[0027] Exemplarily, the staff member passes the wire between the lower combining plate 31 and the upper combining plate 32, and then the fixation and clamping of the wire can be completed through the locking assembly 6. At the same time, the driving wheel 34 covers the bottom of the outer arc surface of the wire; When the staff member selects the position to fix the wire, only by moving the connecting frame 33 can the driving wheel 34 be moved, and then the position of the lower combining plate 31 can be moved.

[0028] Embodiment 4: As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 shown, as a preferred embodiment, on the basis of the above method, further, the load assembly 4 includes a U-shaped hanging ring 41 movably snapped onto the DB adjustment plate 1 and fixedly connected through bolts. One end of the U-shaped hanging ring 41 is movably snapped with a strain clamp 42. One end of the strain clamp 42 is fixedly connected to a wire 43. One end of the wire 43 penetrates between the lower combining plate 31 and the upper combining plate 32 and is simultaneously connected through the housing 27.

[0029] Exemplarily, the staff will snap the strain clamp 42 fixing the wire 43 onto the U-shaped hanging ring 41, and then fix the U-shaped hanging ring 41 through bolts, thus completing the suspended traction of the wire 43.

[0030] Example 5: As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 shown, as a preferred implementation method, on the basis of the above method, further, the fixing assembly 5 includes a combination part 51 fixedly connected to both sides of the inner top wall and the inner bottom wall in the housing 27. A restricting part 52 is snapped on both sides of each combination part 51. A through hole 53 is provided at the snapping position of each group of combination part 51 and the restricting part 52. The combination part 51 and the restricting part 52 are movably snapped with a sleeve 56 through the through hole 53. The sleeves 56 are divided into two in each group. A clamping pipe 54 is movably snapped on one side of each group of sleeves 56. A linkage plate 55 is fixedly connected to one end of each group of sleeves 56 and the clamping pipe 54 away from each other. The bottom of the restricting part 52 is fixedly connected to the lower surface of the lower closing plate 31 / the upper surface of the upper closing plate 32 respectively.

[0031] Exemplarily, the staff will place the lower closing plate 31 and the upper closing plate 32 connected with the wire 43 inside the housing 27, and make the combination part 51 snap into the restricting part 52 on the lower closing plate 31 and the upper closing plate 32. Then insert the sleeve 56 into the through hole 53 on the combination part 51 and the restricting part 52, and make the clamping pipe 54 snap into the sleeve 56 to form a fixation.

[0032] Example 6: As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, as a preferred embodiment, on the basis of the above method, further, the locking assembly 6 includes a carrier 61 fixedly connected to both sides of the lower composite plate 31 and the upper composite plate 32. Locking columns 62 are fixedly connected to the upper surfaces of the carriers 61 located on the lower composite plate 31. Meshing teeth 63 are provided on both sides of the outer arc surface of the locking columns 62. A hole 64 adapted to the locking column 62 is provided in the carrier 61 located on the upper composite plate 32. The locking assembly 6 further includes a sleeve 65 fixedly connected to the upper surface of the carrier 61 located on the upper composite plate 32. Installation grooves 66 are provided on both sides of the inner arc surface of the sleeve 65. A transmission member 67 is clamped through one inner side wall of the installation groove 66. One end of the transmission member 67 is fixedly connected to a blocking plate 68. A tooth block 69 is fixedly connected to the middle of one side surface of the blocking plate 68. The Block tooth block 69 meshes with the locking column 62 through the meshing teeth 63. A spring 610 is fixedly installed on the inner side wall of the installation groove 66 and one side of the blocking plate 68. The spring 610 is sleeved on the transmission member 67. One end of the transmission member 67 is movably clamped with a reinforcing member 611. Clamping grooves 612 are provided on both sides of the outer arc surface of the sleeve 65. The clamping grooves 612 are adapted to the reinforcing member 611.

[0033] Exemplarily, the staff presses the upper composite plate 32 and the lower composite plate 31 together and aligns the locking column 62 with the sleeve 65. During the pressing process, the meshing teeth 63 on the locking column 62 sequentially enter the inside of the sleeve 65 and are sequentially clamped with the tooth block 69. When pressed to the bottom, the reinforcing member 611 is rotated, so that the reinforcing member 611 is clamped inside the clamping groove 612. During this process, the tooth block 69 is restricted by the unevenness of the meshing teeth 63 and continuously moves back and forth slightly left and right. At this time, the tooth block 69 drives the transmission member 67 to move synchronously and squeezes the spring 610. After the reinforcing member 611 is fixed, the tooth block 69 cannot continue to move back and forth slightly left and right, thus completing the fixation of the tooth block 69.

[0034] Embodiment 7: The above-mentioned solutions in the above embodiments are further introduced below in combination with specific working methods. See the following description for details: Specifically, when this preformed three-span reinforced strain clamp is working / being used: The staff snaps the right-angle hanger 21 onto the DB adjusting plate 1, then installs the positioning bolt in the positioning hole 7. At this time, the fixation of the right-angle hanger 21 is completed. Subsequently, the connecting plate 22 is installed on the right-angle hanger 21 through bolts. At this time, the extension rod 24 is sleeved on the U-shaped ring 23, and then the U-shaped ring 23 is snapped onto the connecting plate 22. At this time, the U-shaped ring 23 is fixed through bolts. Then the extension rod 24 is passed through the pull plate 25, and the extension rod 24 is fixed through nuts. At this time, the housing 27 with the wire fixed can be towed and suspended. The staff passes the wire through between the lower closing plate 31 and the upper closing plate 32, and then the fixation and clamping of the wire can be completed through the locking assembly 6. At the same time, the driving wheel 34 is wrapped around the bottom of the outer arc surface of the wire. When the staff selects the position to fix the wire, just by moving the connecting frame 33, the driving wheel 34 can be moved, and then the position of the lower closing plate 31 can be moved. The staff snaps the strain clamp 42 with the wire 43 fixed onto the U-shaped hanging ring 41, and then the U-shaped hanging ring 41 is fixed through bolts, and then the suspension traction of the wire 43 is completed. The staff places the lower closing plate 31 and the upper closing plate 32 connected with the wire 43 inside the housing 27, and makes the assembly 51 snap into the restricting member 52 on the lower closing plate 31 and the upper closing plate 32. Then the sleeve 56 is inserted into the through hole 53 located on the assembly 51 and the restricting member 52, and the clamping tube 54 is snapped into the sleeve 56 to form a fixation. The staff presses the upper closing plate 32 and the lower closing plate 31 together, and aligns the locking post 62 with the sleeve 65. During the pressing process, the meshing teeth 63 on the locking post 62 successively enter the sleeve 65 and are successively snapped with the tooth block 69. Until when it is pressed to the bottom, the reinforcing member 611 is rotated, so that the reinforcing member 611 is snapped into the clamping groove 612. During this process, the tooth block 69 is restricted by the convex and concave of the meshing teeth 63 and moves reciprocally left and right in small amplitudes continuously. At this time, the tooth block 69 drives the transmission member 67 to move synchronously and squeezes the spring 610. After the reinforcing member 611 is fixed, the tooth block 69 cannot continue to move reciprocally left and right in small amplitudes, thus completing the fixation of the tooth block 69.

[0035] The above embodiments are only used to illustrate the present invention rather than to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above respective embodiments, the present invention is not limited to the above specific implementation manners. Therefore, any modification or equivalent replacement to the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. A pre-twisted three-span reinforced tension clamp, characterized in that: It comprises a DB adjustment plate (1), a connection component (2) arranged on the DB adjustment plate (1), and a traction component (3) arranged on the connection component (2); the DB adjustment plate (1) is also provided with a load component (4); A fixing assembly (5) is provided inside the traction assembly (3), and a locking assembly (6) is provided on the fixing assembly (5).

2. A pre-twisted three-span reinforced tension clamp according to claim 1, characterized in that: The DB adjustment plate (1) is provided with positioning holes (7), the number of the positioning holes (7) being three, and the three positioning holes (7) being evenly and equidistantly distributed at the edge of the DB adjustment plate (1), the connecting component (2) comprising a right-angle hanging plate (21) movably snap-fitted to the DB adjustment plate (1), the right-angle hanging plate (21) being aligned with the positioning holes (7) and movably connected with a positioning bolt.

3. A pre-twisted three-span reinforced tension clamp according to claim 2, characterized in that: A connecting plate (22) is movably connected to one side of the right-angle hanging plate (21) and is fixedly connected by bolts. U-shaped rings (23) are respectively connected to the two corners of one side of the connecting plate (22). An extension rod (24) is sleeved on the U-shaped ring (23). One end of the extension rod (24) penetrates and is connected to a pull plate (25) and is fixed by a nut. A connecting plate (26) is fixedly connected to one side of the pull plate (25). A limiting hole is opened at one end of the connecting plate (26) and a housing (27) is movably connected to the connecting plate (26) through the limiting hole.

4. The pre-twisted three-span reinforced tension clamp according to claim 3 is characterized in that: The traction assembly (3) comprises a lower closing plate (31) arranged inside the housing (27), an upper closing plate (32) being arranged above the lower closing plate (31), one end of the lower closing plate (31) being fixedly connected to a connecting frame (33), a driving wheel (34) being movably connected to the connecting frame (33), and a same wire (43) being movably connected to the driving wheel (34) between the lower closing plate (31) and the upper closing plate (32).

5. The pre-twisted three-span reinforced tension clamp according to claim 4, characterized in that: The load assembly (4) comprises a U-shaped hanging ring (41) movably clamped on the DB adjustment plate (1) and fixedly connected by bolts; one end of the U-shaped hanging ring (41) is movably clamped with a tension clamp (42); one end of the tension clamp (42) is fixedly connected with a wire (43); one end of the wire (43) is penetrated between the lower closing plate (31) and the upper closing plate (32) and is penetrated and connected to the housing (27).

6. The pre-twisted three-span reinforced tension clamp according to claim 4, characterized in that: The fixing assembly (5) comprises an assembly (51) fixedly connected to both sides of the inner top wall and the inner bottom wall of the shell (27), each assembly (51) having a limiting member (52) clamped on both sides, a through hole (53) being provided at the clamping position between each group of the assembly (51) and the limiting member (52), the assembly (51) and the limiting member (52) being movably clamped with a sleeve (56) through the through hole (53), the sleeves (56) being grouped in pairs, one side of each group of the sleeves (56) being movably clamped with a clamping tube (54), an end of each group of the sleeves (56) away from the clamping tube (54) being fixedly connected with a linkage plate (55), and the bottom of the limiting member (52) being fixedly connected to the lower surface of the lower closing plate (31) / the upper surface of the upper closing plate (32), respectively.

7. The pre-twisted three-span reinforced tension clamp according to claim 4, characterized in that: The locking assembly (6) comprises a bearing member (61) fixedly connected to both sides of the lower closing plate (31) and the upper closing plate (32); a locking column (62) is fixedly connected to the upper surface of the bearing member (61) on the lower closing plate (31); meshing teeth (63) are provided on both sides of the outer arc surface of the locking column (62); and a hole (64) adapted to the locking column (62) is provided on the bearing member (61) on the upper closing plate (32).

8. The pre-twisted three-span reinforced tension clamp according to claim 7, characterized in that: The locking assembly (6) further comprises a sleeve (65) fixedly connected to the upper surface of the bearing member (61), the inner arc surface of the sleeve (65) having mounting grooves (66) on both sides, a transmission member (67) passing through an inner side wall of one side of the mounting groove (66) and being clamped therein, one end of the transmission member (67) being fixedly connected to a blocking plate (68), a tooth block (69) being fixedly connected to the middle portion of a surface of one side of the blocking plate (68), and the tooth block (69) being fixedly connected to the middle portion of a surface of one side of the blocking plate (68). piece (69) is meshed with the locking column (62) through the meshing teeth (63).

9. The pre-twisted three-span reinforced tension clamp according to claim 8, characterized in that: A spring (610) is fixedly mounted on the inner side wall of the mounting groove (66) and one side of the blocking plate (68); the spring (610) is sleeved on the transmission member (67); one end of the transmission member (67) is movably engaged with a reinforcing member (611); engaging grooves (612) are provided on both sides of the outer arc surface of the sleeve (65); the engaging grooves (612) are adapted to fit the reinforcing member (611).

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