A pre-twisted tension clamp that is easy to maintain

Abstract

The utility model discloses a pre-twisted tension clamp that is easy to maintain, including a round block, one side of the round block is fixedly connected to a U-shaped piece, a cavity is provided in the round block, a rotating shaft is rotatably connected in the cavity, the outer edge of the rotating shaft is movably connected to a lever, a through slot connected to the cavity is provided on the outside of the round block, the lever passes through the through slot, the outer edge of the rotating shaft is fixedly sleeved with a ratchet, the ratchet engages a pawl, the pawl is movably connected in the cavity, the end of the rotating shaft rotates through the cavity, and the end of the rotating shaft is fixedly connected to a bowl head hanging plate. The utility model improves the force point when the ratchet is rotated by movably connecting a lever with an inner tooth ring and a triangular block on the rotating shaft, so that when the hard pre-twisted wire is driven to twist by rotating the ratchet, it is more labor-saving, and the convenience of twisting the pre-twisted wire is improved, and there is no need to use tools to drive the pre-twisted wire to twist.

Description

Technical Field

[0001] The utility model relates to the technical field of overhead line hardware, in particular to a pre-twisted tension wire clamp which is convenient for maintenance. Background Art

[0002] Pre-twisted tension clamp is a widely used tension clamp, which is used to fix the middle and terminal of overhead line conductors and overhead optical cables. It has the characteristics of high gripping force, light weight, uniform stress distribution, good corrosion resistance, simple installation and strong versatility. It is widely used in conductors and overhead optical cables such as overhead composite ground wire OPGW, overhead composite phase wire OPPC, all-dielectric self-supporting overhead optical cable ADSS, etc.

[0003] Patent publication number CN215934412U discloses a pre-twisted tension clamp, including pre-twisted wire and hardware, the hardware including a U-shaped ring, a ratchet assembly, a bowl head hanging plate and a heart-shaped ring, one end of the heart-shaped ring is connected to the pre-twisted wire, the pre-twisted wire is connected to a cable, the other end of the heart-shaped ring is connected to the bowl head hanging plate, the bowl head hanging plate is a connecting hardware composed of a cap socket at one end and a plate shape at the other end, the plate-shaped end of the bowl head hanging plate is connected to the heart-shaped ring, the cap socket end of the bowl head hanging plate is connected to a ratchet assembly, the ratchet assembly can drive the bowl head hanging plate and the pre-twisted wire to rotate, the other end of the ratchet assembly is connected to the U-shaped ring, and the other end of the U-shaped ring is connected to the pole. The pre-twisted tension clamp is provided with a ratchet assembly, so that the installed pre-twisted wire can also be adjusted by rotating the ratchet, which is convenient for later maintenance during use.

[0004] However, when adjusting the tightness of the pre-twisted wire, this patent requires rotating the bowl head hanging plate. For some pre-twisted wires with relatively hard texture, a lot of force is needed to rotate the bowl head hanging plate, so that the bowl head hanging plate can drive the pre-twisted wire to be twisted, and some tools are needed to facilitate the rotation of the bowl head hanging plate, which is relatively troublesome and laborious. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a pre-twisted tension wire clamp which is convenient for maintenance.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pre-twisted tension wire clamp which is easy to maintain, comprising a round block, one side of which is fixedly connected to a U-shaped piece, a cavity is provided in the round block, a rotating shaft is rotatably connected in the cavity, the outer edge of the rotating shaft is movably connected to a lever, a through groove connected to the cavity is provided on the outside of the round block, the lever passes through the through groove, the outer edge of the rotating shaft is fixedly sleeved with a ratchet, the ratchet engages a pawl, the pawl is movably connected in the cavity, the end of the rotating shaft rotates through the cavity, and the end of the rotating shaft is fixedly connected to a bowl head hanging plate.

[0007] As a further description of the above technical solution: an axially symmetrical limit plate is provided on each side of the through slot, the two limit plates are fixedly connected to the round block, a push rod is inserted into the opposite sides of the two limit plates, and the two push rods are telescopically connected to the shift rod.

[0008] As a further description of the above technical solution: a positioning groove is opened on the inner side of each of the two limit plates, and a push rod is inserted into each of the positioning grooves. A groove is opened at each end of the shift rod, and two mirror-symmetrical first springs are fixedly connected in each of the grooves. A push rod is fixed at the end of each two of the first springs, and the push rod is slidably connected in the groove.

[0009] As a further description of the above technical solution: an annular groove is concentrically formed on the outer edge of the rotating shaft, the annular groove is located on the right side of the ratchet, the inner gear ring is rotatably connected to the inner gear ring, the end of the shift rod is fixedly connected to the inner gear ring, and a triangular block adapted to the inner gear ring is radially telescopically connected to the inner gear ring.

[0010] As a further description of the above technical solution: a receiving groove is radially opened on the inner wall of the annular groove, two mirror-symmetrical second springs are radially fixed in the receiving groove, and the triangular block is radially slidably connected in the receiving groove and fixedly connected to the second spring.

[0011] As a further description of the above technical solution: two axially symmetrical annular dovetail grooves are concentrically opened in the annular groove, a dovetail ring is rotatably connected in each of the annular dovetail grooves, and the two dovetail rings are concentrically fixed on both sides of the inner gear ring.

[0012] The utility model has the following beneficial effects:

[0013] Compared with the prior art, the pre-twisted tension wire clamp which is easy to maintain, utilizes an internal gear ring and a triangular block to flexibly connect a lever on the rotating shaft, thereby increasing the force applied when the ratchet wheel is rotated, making it more labor-saving when the harder pre-twisted wire is twisted by rotating the ratchet wheel, thereby increasing the convenience of twisting the pre-twisted wire and eliminating the need for tools to twist the pre-twisted wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional diagram of the overall structure of a pre-twisted tension wire clamp that is easy to maintain proposed by the utility model;

[0015] Figure 2 This is a main cross-sectional view of the overall structure of a pre-twisted tension wire clamp that is easy to maintain proposed by the utility model;

[0016] Figure 3 A side cross-sectional view of the connection between the ratchet and the round block of a pre-twisted tension clamp that is easy to maintain proposed by the utility model;

[0017] Figure 4 A side cross-sectional view of the connection between the inner gear ring and the rotating shaft of a pre-twisted tension wire clamp that is easy to maintain proposed by the utility model;

[0018] Figure 5 This is a main cross-sectional view of the connection between the top rod and the limit plate of a pre-twisted tension clamp that is easy to maintain proposed by the utility model;

[0019] Figure 6 The utility model provides a pre-twisted tension clamp which is convenient for maintenance. Figure 4 A magnified view of the structure at center.

[0020] Legend:

[0021] 1. Round block; 2. Through slot; 3. Push rod; 4. Push rod; 5. Limit plate; 6. Bowl head hanging plate; 7. Rotating shaft; 8. Ratchet; 9. Cavity; 10. Inner gear ring; 11. Annular groove; 12. Ratchet pawl; 13. Groove; 14. First spring; 15. Positioning slot; 16. Storage slot; 17. Second spring; 18. Triangular block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figures 1 to 6The utility model provides a pre-twisted tension clamp which is convenient for maintenance: it comprises a round block 1, one side of the round block 1 is fixedly connected to a U-shaped piece, a cavity 9 is arranged in the round block 1, a rotating shaft 7 is rotatably connected in the cavity 9, the outer edge of the rotating shaft 7 is movably connected to a lever 3, a through slot 2 which is connected to the cavity 9 is arranged on the outside of the round block 1, the lever 3 passes through the through slot 2, the outer edge of the rotating shaft 7 is fixedly sleeved with a ratchet 8, the ratchet 8 engages with a pawl 12, the pawl 12 is movably connected in the cavity 9, the end of the rotating shaft 7 rotates through the cavity 9, the end of the rotating shaft 7 is fixedly connected to a bowl head hanging plate 6, an annular groove 11 is concentrically arranged on the outer edge of the rotating shaft 7, and the annular groove 11 is located at the ratchet 8 On the right side, the inner gear ring 10 is rotatably connected in the annular groove 11, and two axially symmetrical annular dovetail grooves are concentrically provided in the annular groove 11, and a dovetail ring is rotatably connected in each annular dovetail groove, and the two dovetail rings are respectively concentrically fixed on both sides of the inner gear ring 10, and the end of the lever 3 is fixedly connected to the inner gear ring 10, and a triangular block 18 adapted to the inner gear ring 10 is radially telescopically connected in the annular groove 11, and a receiving groove 16 is radially provided on the inner wall of the annular groove 11, and two mirror-symmetrical second springs 17 are radially fixed in the receiving groove 16, and the triangular block 18 is radially slidably connected in the receiving groove 16 and fixedly connected to the second spring 17;

[0024] Reference Figure 1 and Figure 5 In order to prevent the lever 3 from driving the inner gear ring 10 to rotate when not in use, an axially symmetrical limit plate 5 is provided on each side of the through slot 2, and the two limit plates 5 are fixedly connected to the round block 1. A push rod 4 is inserted into the opposite side of the two limit plates 5, and the two push rods 4 are telescopically connected to the lever 3. A positioning groove 15 is provided on the inner side of each of the two limit plates 5, and a push rod 4 is inserted into each positioning groove 15. A groove 13 is provided at each end of the lever 3, and two mirror-symmetrical first springs 14 are fixedly connected in each groove 13. A push rod 4 is fixed at the end of each two first springs 14, and the push rod 4 is slidably connected in the groove 13.

[0025] By flexibly connecting a lever 3 on the rotating shaft 7 using an internal gear ring 10 and a triangular block 18, the force applied when the ratchet wheel 8 is rotated is increased, making it easier to twist the hard pre-twisted wire by rotating the ratchet wheel 8, thereby improving the convenience of twisting the pre-twisted wire without the need for tools to twist the pre-twisted wire.

[0026] Working principle: When in use, first push the two push rods 4 toward the direction of the lever 3 at the same time, so that the push rods 4 move toward the groove 13, the first spring 14 is compressed, so that the two push rods 4 are disengaged from the positioning grooves 15 in the two limit plates 5, and then the lever 3 is rotated to one side, so that the lever 3 rotates in the through groove 2, and then the two push rods 4 are released, so that the two push rods 4 are reset, and the lever 3 rotates in the annular groove 11 on the outer edge of the rotating shaft 7 through the inner gear ring 10. During the rotation, the inner gear ring The teeth of the triangular block 10 are adapted to the inclined surface of the triangular block 18, and the triangular block 18 moves toward the receiving groove 16, and the second spring 17 is compressed, so that the rotating shaft 7 does not rotate, and only the inner gear ring 10 rotates until the lever 3 rotates to the other side, and then the lever 3 is rotated in the opposite direction. At this time, the straight surface of the triangular block 18 abuts against the straight surface of the teeth of the inner gear ring 10, so that the inner gear ring 10 can no longer rotate in the annular groove 11, so that the lever 3 drives the rotating shaft 7 to rotate, and the rotating shaft 7 drives the ratchet 8 to rotate. When the lever 3 rotates to After the limit plate 5 is moved to one side, the lever 3 is rotated in the opposite direction again. During the rotation, the teeth of the inner gear ring 10 are adapted to the inclined surface of the triangular block 18, and the triangular block 18 moves toward the receiving groove 16. The second spring 17 is compressed, so that the rotating shaft 7 does not rotate, and only the inner gear ring 10 rotates until the lever 3 rotates to the other side. Then the lever 3 is rotated in the opposite direction. At this time, the straight surface of the triangular block 18 abuts against the straight surface of the teeth of the inner gear ring 10, so that the inner gear ring 10 can no longer rotate in the annular groove 11, so that the lever 3 drives The rotating shaft 7 rotates, and the rotating shaft 7 drives the ratchet 8 to rotate, and the operation is repeated until the pre-twisted wire is tightened, and then the two push rods 4 are pushed at the same time, so that the two push rods 4 move into the groove 13 again, and the first spring 14 is compressed, so that the two push rods 4 are respectively aligned with the positioning grooves 15 on the inner sides of the two limit plates 5, and then the push rods 4 are released, and the first spring 14 in the compressed state is reset. When the first spring 14 is reset, it pushes the push rod 4 to be inserted into the positioning groove 15, thereby limiting the rotation direction of the lever 3.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pre-twisted tension clamp convenient for maintenance, comprising a round block (1), one side of the round block (1) being fixedly connected to a U-shaped piece, characterized in that: The round block (1) is provided with a cavity (9), the cavity (9) is rotatably connected to a rotating shaft (7), the outer edge of the rotating shaft (7) is movably connected to a lever (3), the outside of the round block (1) is provided with a through slot (2) connected to the cavity (9), the lever (3) passes through the through slot (2), the outer edge of the rotating shaft (7) is fixedly sleeved with a ratchet (8), the ratchet (8) engages with a pawl (12), the pawl (12) is movably connected in the cavity (9), the end of the rotating shaft (7) rotates through the cavity (9), and the end of the rotating shaft (7) is fixedly connected to a bowl head hanging plate (6).

2. The pre-twisted tension clamp convenient for maintenance according to claim 1, characterized in that: An axially symmetrical limiting plate (5) is provided on each side of the through slot (2); the two limiting plates (5) are fixedly connected to the round block (1); a push rod (4) is inserted into the opposite side of the two limiting plates (5); and the two push rods (4) are telescopically connected to the shifting rod (3).

3. The pre-twisted tension clamp convenient for maintenance according to claim 2, characterized in that: A positioning groove (15) is respectively formed on the inner side of the two limit plates (5), and one of the push rods (4) is inserted into each of the positioning grooves (15). A groove (13) is respectively formed at both ends of the shifting rod (3), and two mirror-symmetrical first springs (14) are fixedly connected in each of the grooves (13). One of the push rods (4) is fixed to the ends of each of the two first springs (14), and the push rods (4) are slidably connected in the grooves (13).

4. The pre-twisted tension clamp convenient for maintenance according to claim 1, characterized in that: An annular groove (11) is concentrically formed on the outer edge of the rotating shaft (7), and the annular groove (11) is located on the right side of the ratchet wheel (8). The annular groove (11) is rotatably connected to the inner gear ring (10), and the end of the lever (3) is fixedly connected to the inner gear ring (10). A triangular block (18) adapted to the inner gear ring (10) is radially telescopically connected to the inner ring (10).

5. The pre-twisted tension clamp convenient for maintenance according to claim 4, characterized in that: A receiving groove (16) is radially formed on the inner wall of the annular groove (11), two second springs (17) which are mirror-symmetrical are radially fixed in the receiving groove (16), and the triangular block (18) is radially slidably connected in the receiving groove (16) and is fixedly connected to the second spring (17).

6. The pre-twisted tension clamp convenient for maintenance according to claim 4, characterized in that: Two axially symmetrical annular dovetail grooves are concentrically formed in the annular groove (11), a dovetail ring is rotatably connected in each of the annular dovetail grooves, and the two dovetail rings are concentrically fixed on both sides of the inner gear ring (10).

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