Single-core high-voltage cable drawing head

Abstract

The utility model discloses a single-core high-voltage cable drawing head which comprises a fixing shell, a first crosshead screw is installed on one side of the upper end of the fixing shell, a second crosshead screw is installed on the lower portion of one side wall of the fixing shell, and the locking end of the first crosshead screw and the locking end of the second crosshead screw are respectively connected with a connecting sleeve. The single-core high-voltage cable drawing head has the beneficial effects that through the matching design of the crosshead bolt I, the crosshead bolt II, the linkage plate, the rubber pressing plate, the rubber cushion plate, the guide groove and the guide block, the single-core high-voltage cable drawing head can conveniently and quickly press and fix cables with different sizes when being used; according to the cable traction head, the flexibility of the traction head in use is greatly improved, the end part of the cable can be locked and fixed in a double-locking manner, the risk that the cable slides and falls off relative to the traction head in the traction process is effectively avoided, and the traction efficiency of the traction head on the cable is improved.

Description

Technical Field

[0001] The utility model relates to the field of high-voltage cables, in particular to a single-core high-voltage cable traction head. Background Art

[0002] The cable traction head is a commonly used auxiliary accessory in the cable laying process. The traction head is used as a cable pulling structure to drive the cable to move to the laying position.

[0003] Due to the large variety of cable sizes, the size of the crimping tube of the currently used cable traction head cannot be adjusted. Therefore, different sizes of traction heads need to be selected for crimping and fixing cables of different sizes, resulting in poor flexibility in the use of the traction head. At the same time, since the currently used traction heads mainly use a single-weight locking method to fix the cable end, the traction head is prone to slide and fall off from the cable end during the traction process due to the large overall weight of the cable to be pulled, resulting in a relatively low efficiency in pulling the cable by the traction head. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a single-core high-voltage cable traction head which can not only pull and move cables of different sizes, but also effectively prevent the cables from sliding and falling off during the pulling process through a double locking effect, in response to the current status of the existing technology.

[0005] The utility model is achieved through the following technical scheme: the utility model proposes a single-core high-voltage cable traction head, including a fixed shell, a cross head screw rod 1 is installed on one side of the upper end of the fixed shell, a cross head screw rod 2 is installed on the lower part of one side wall of the fixed shell, the locking ends of the cross head screw rod 1 and the cross head screw rod 2 are respectively connected to a connecting sleeve, one end of the connecting sleeve is connected to a linkage plate, a rubber pressure plate is installed on the clamping wall of the linkage plate, two guide blocks are symmetrically installed on the two side walls of the linkage plate, a bent installation cavity is opened in the middle part of the fixed shell, a guide groove is opened in the installation cavity at a position cooperating with the guide block, and a rubber pad is installed on the side of the installation cavity opposite to the rubber pressure plate.

[0006] By adopting the above technical solution, when pulling, the cable to be pulled is first passed through the installation cavity, and then the two linkage plates are pressed at different positions of the ends of the cable by rotating the rotating cross head screw rod 1 and the rotating cross head screw rod 2 respectively, so as to achieve the fixation of the cable before pulling. In this fixing method, not only can cables of different sizes be conveniently compressed and fixed, so that the flexibility of the traction head during use is greatly improved, but also the end of the cable can be locked and fixed in a double locking manner, which effectively avoids the risk of the cable sliding and falling off relative to the traction head during the pulling process, thereby improving the pulling efficiency of the traction head for the cable.

[0007] Furthermore, the pulling portion of the fixed shell is installed with a pulling buffer assembly, and the pulling buffer assembly includes a support plate welded on the outer wall of the fixed shell in a vertically symmetrical manner, a sliding rod welded between the two support plates, a sliding sleeve symmetrically installed on the sliding rod, a spring mounted on the sliding rod and located on both sides of the sliding sleeve, a connecting rod installed on the outer wall of the sliding sleeve, and a pulling rod installed at the pulling end of the connecting rod.

[0008] By adopting the above technical solution, the pulling buffer component is used by connecting the pulling rod to an external cable pulling device, thereby achieving the pulling movement of the cable by means of the buffering effect of the pulling buffer component.

[0009] Furthermore, the cross head screw rod 1 and the cross head screw rod 2 are both threadedly connected to the fixed shell, and the cross head screw rod 1 and the cross head screw rod 2 are respectively rotationally connected to the corresponding connecting sleeve.

[0010] By adopting the above technical solution, the convenient rotation of the cross head screw rod 1 and the cross head screw rod 2 relative to the corresponding linkage plate can be ensured under the action of the connecting sleeve.

[0011] Furthermore, the connecting sleeve is welded to the linkage plate, the rubber pressure plate is bonded to the linkage plate, and the clamping wall of the rubber pressure plate is an arc-shaped groove structure.

[0012] By adopting the above technical solution, the rubber pressure plate can increase the friction between the rubber pressure plate and the cable to be pulled, so as to ensure stable clamping of the cable.

[0013] Furthermore, the guide block is formed on the linkage plate, and the guide block is slidably connected to the guide groove.

[0014] By adopting the above technical solution, the cooperation between the guide block and the guide groove can ensure the stable sliding of the linkage plate relative to the installation cavity.

[0015] Furthermore, the rubber pad is bonded to the installation cavity, and the clamping wall of the rubber pad is an arc-shaped groove structure.

[0016] By adopting the above technical solution, the rubber pad can effectively increase the friction between the cable and the installation cavity, so as to achieve reliable fixation of the cable in the installation cavity.

[0017] Furthermore, the sliding sleeve is slidably connected to the sliding rod, and the sliding rod passes through the spring.

[0018] By adopting the above technical solution, the spring can buffer the fixed shell during the pulling process, so as to reduce the force exerted by the pulling device on the cable at the moment of straightening the cable.

[0019] Furthermore, one end of the connecting rod is hinged to the pulling rod, and the other end of the connecting rod is hinged to the sliding sleeve.

[0020] By adopting the above technical solution, the connecting rod can ensure that the sliding rod can slide conveniently relative to the sliding rod under the action of the pulling rod.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model adopts the coordinated design of the cross head bolt one, the cross head bolt two, the linkage plate, the rubber pressure plate, the rubber pad, the guide groove and the guide block, so that the single-core high-voltage cable traction head can not only realize convenient compression and fixation of cables of different sizes when in use, so that the flexibility of the traction head when in use is greatly improved, but also can lock and fix the end of the cable in a double locking manner, effectively avoiding the risk of the cable sliding and falling off relative to the traction head during the pulling process, so that the pulling efficiency of the traction head on the cable is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a single-core high-voltage cable traction head described in the utility model;

[0024] Figure 2 This is a front view of a single-core high-voltage cable traction head described in the utility model;

[0025] Figure 3 It is a main cross-sectional view of a fixing shell in a single-core high-voltage cable traction head described in the utility model;

[0026] Figure 4 It is a schematic diagram of the connection structure of a linkage plate, a connection sleeve and a rubber pressure plate in a single-core high-voltage cable traction head described in the utility model;

[0027] Figure 5 The utility model is a schematic structural diagram of a sliding sleeve in a single-core high-voltage cable traction head.

[0028] The following are the descriptions of the reference numerals:

[0029] 1. Cross head screw one; 2. Fixed shell; 3. Rubber pressure plate; 4. Mounting cavity; 5. Guide groove; 6. Rubber pad; 7. Cross head screw two; 8. Connecting rod; 9. Pull rod; 10. Support plate; 11. Spring; 12. Sliding rod; 13. Sliding sleeve; 14. Connecting sleeve; 15. Guide block; 16. Linkage plate. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] like Figure 1 , Figure 3 and Figure 4 As shown, a single-core high-voltage cable traction head in this embodiment includes a fixed shell 2, a crosshead screw 1 is installed on one side of the upper end of the fixed shell 2, a crosshead screw 2 7 is installed on the lower part of one side wall of the fixed shell 2, and the locking ends of the crosshead screw 1 and the crosshead screw 2 7 are respectively connected to a connecting sleeve 14, and one end of the connecting sleeve 14 is connected to a linkage plate 16, and a rubber pressure plate 3 is installed on the clamping wall of the linkage plate 16, and two guide blocks 15 are symmetrically installed on the two side walls of the linkage plate 16. A bent installation cavity 4 is opened in the middle part of the fixed shell 2, and a guide groove 5 is opened in the installation cavity 4 at a position cooperating with the guide block 15. The guide block 15 cooperates with the guide groove 5 to ensure the stable sliding of the linkage plate 16 relative to the installation cavity 4, and a rubber pad 6 is installed on the side of the installation cavity 4 opposite to the rubber pressure plate 3. The rubber pad 6 and the rubber pad 6 can effectively increase the friction between the cable and the installation cavity 4 to achieve reliable fixation of the cable in the installation cavity 4.

[0032] Among them, when pulling, the cable to be pulled is first passed through the installation cavity 4, and then the two linkage plates 16 are pressed at different positions of the ends of the cable by rotating the rotating crosshead screw 1 and the crosshead screw 2 7 respectively, so as to achieve the fixation of the cable before pulling. Because under this fixing method, not only can cables of different sizes be conveniently compressed and fixed, so that the flexibility of the traction head during use is greatly improved, but also the end of the cable can be locked and fixed in a double locking manner, which effectively avoids the risk of the cable sliding and falling off relative to the traction head during the pulling process, thereby improving the pulling efficiency of the traction head for the cable.

[0033] like Figure 1 , Figure 2 and Figure 5 As shown, in this embodiment, the pulling part of the fixed shell 2 is installed with a pulling buffer assembly, which includes a support plate 10 welded on the outer wall of the fixed shell 2 in a vertically symmetrical manner, a sliding rod 12 welded between the two support plates 10, a sliding sleeve 13 symmetrically installed on the sliding rod 12, a spring 11 sleeved on the sliding rod 12 and located on both sides of the sliding sleeve 13, a connecting rod 8 installed on the outer wall of the sliding sleeve 13, and a pulling rod 9 installed at the pulling end of the connecting rod 8.

[0034] The pulling and buffering assembly, when in use, connects the pulling rod 9 to an external cable pulling device, thereby achieving pulling and moving of the cable by means of the buffering effect of the pulling and buffering assembly.

[0035] like Figure 1 , Figure 3 and Figure 4 As shown, in the present embodiment, the crosshead screw 1 and the crosshead screw 2 7 are both threadedly connected to the fixed shell 2, and the crosshead screw 1 and the crosshead screw 2 7 are respectively rotatably connected to the corresponding connecting sleeve 14, under the action of the connecting sleeve 14, the convenient rotation of the crosshead screw 1 and the crosshead screw 2 7 relative to the corresponding linkage plate 16 can be ensured, the connecting sleeve 14 is welded to the linkage plate 16, the rubber pressure plate 3 is bonded to the linkage plate 16, the clamping wall of the rubber pressure plate 3 is an arc-shaped groove structure, the rubber pressure plate 3 can increase the friction between the cable to be pulled to ensure stable clamping of the cable, the guide block 15 is formed on the linkage plate 16, the guide block 15 is slidably connected to the guide groove 5, the rubber pad 6 is bonded to the mounting cavity 4, and the clamping wall of the rubber pad 6 is an arc-shaped groove structure.

[0036] like Figure 1 , Figure 2 and Figure 5 As shown, in this embodiment, the sliding sleeve 13 is slidably connected to the sliding rod 12, and the sliding rod 12 passes through the spring 11. The spring 11 can buffer the fixed shell 2 during the pulling process to reduce the force exerted by the pulling device on the cable at the moment of straightening the cable. One end of the connecting rod 8 is hinged to the pulling rod 9, and the other end of the connecting rod 8 is hinged to the sliding sleeve 13. The connecting rod 8 can ensure that the sliding rod 12 can slide conveniently relative to the sliding rod 12 under the action of the pulling rod 9.

[0037] The specific implementation process of this embodiment is as follows: before pulling the single-core high-voltage cable, first pass the cable end to be pulled through the installation cavity 4, and then press the corresponding rubber pressure plate 3 at different positions of the cable end by rotating the cross head screw 1 and the cross head screw 2 7, so that the cable end can be locked and fixed under the cooperative pressing action of the rubber pressure plate 3 and the rubber pressure pad, and then only need to connect the pulling rod 9 on the pulling buffer assembly with the external cable pulling equipment to put the pulling head into use. During use, the cable is pressed and fixed with the help of the cross head bolt 1, the cross head bolt 2, the linkage plate 16, the rubber pressure plate 3, the rubber pad 6, the guide groove 5 and the guide block 15, so that the single-core high-voltage cable pulling head can not only realize the convenient pressing and fixing of cables of different sizes when in use, so that the flexibility of the pulling head when in use is greatly improved, but also the cable end can be locked and fixed in a double locking manner, effectively avoiding the risk of the cable sliding and falling off relative to the pulling head during the pulling process, so that the pulling efficiency of the pulling head for the cable is improved.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A single-core high-voltage cable traction head, characterized in that: The invention comprises a fixed shell (2), wherein a cross head screw rod (1) is mounted on one side of the upper end of the fixed shell (2), a cross head screw rod (7) is mounted on the lower part of one side wall of the fixed shell (2), the locking ends of the cross head screw rod (1) and the cross head screw rod (7) are respectively connected to a connecting sleeve (14), one end of the connecting sleeve (14) is connected to a linkage plate (16), a rubber pressure plate (3) is mounted on the clamping wall of the linkage plate (16), two guide blocks (15) are symmetrically mounted on the two side walls of the linkage plate (16), a bent installation cavity (4) is opened in the middle part of the fixed shell (2), a guide groove (5) is opened in the installation cavity (4) at a position cooperating with the guide block (15), and a rubber pad (6) is mounted on the side of the installation cavity (4) opposite to the rubber pressure plate (3).

2. A single-core high-voltage cable pulling head according to claim 1, characterized in that: The pulling portion of the fixed shell (2) is provided with a pulling buffer assembly, the pulling buffer assembly comprising a support plate (10) welded to the outer wall of the fixed shell (2) in an up-down symmetrical manner, a sliding rod (12) welded between the two support plates (10), a sliding sleeve (13) symmetrically mounted on the sliding rod (12), a spring (11) sleeved on the sliding rod (12) and located on both sides of the sliding sleeve (13), a connecting rod (8) mounted on the outer wall of the sliding sleeve (13), and a pulling rod (9) mounted on the pulling end of the connecting rod (8).

3. The single-core high-voltage cable pulling head according to claim 1, characterized in that: The cross head screw rod 1 (1) and the cross head screw rod 2 (7) are both threadedly connected to the fixed shell (2), and the cross head screw rod 1 (1) and the cross head screw rod 2 (7) are respectively rotationally connected to the corresponding connecting sleeve (14).

4. The single-core high-voltage cable pulling head according to claim 1, characterized in that: The connecting sleeve (14) is welded to the linkage plate (16), the rubber pressing plate (3) is bonded to the linkage plate (16), and the clamping wall of the rubber pressing plate (3) is an arc-shaped groove structure.

5. The single-core high-voltage cable pulling head according to claim 1, characterized in that: The guide block (15) is formed on the linkage plate (16), and the guide block (15) is slidably connected to the guide groove (5).

6. The single-core high-voltage cable pulling head according to claim 1, characterized in that: The rubber pad (6) is bonded to the installation cavity (4), and the clamping wall of the rubber pad (6) is an arc-shaped groove structure.

7. The single-core high-voltage cable pulling head according to claim 2, characterized in that: The sliding sleeve (13) is slidably connected to the sliding rod (12), and the sliding rod (12) passes through the spring (11).

8. The single-core high-voltage cable pulling head according to claim 2, characterized in that: One end of the connecting rod (8) is hinged to the pulling rod (9), and the other end of the connecting rod (8) is hinged to the sliding sleeve (13).

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