Pipeline tensioning device

Abstract

The utility model belongs to the field of construction facilities, and relates to a pipeline tensioning device which comprises a shell with two open ends, a first locking device is fixedly arranged at one end of the shell, a sliding component is arranged at the other end of the shell in a sliding mode, and a second locking device is fixedly arranged on the sliding component. Each of the first locking device and the second locking device comprises a locking shell with two open ends, at least two locking blocks are arranged in the locking shell in a circumferential array mode, and the locking blocks are wedge-shaped and are arranged in the locking shell in a sliding mode in the opening direction of the locking shell. The tensioning device is suitable for tensioning all pipeline-shaped structures such as pipelines and steel wire ropes.

Description

Technical Field

[0001] The utility model belongs to the field of construction facilities, and specifically relates to a pipeline tensioning device. Background Art

[0002] During civil engineering and power construction, the construction and laying of pipelines such as cables, steel bars, and wire ropes are often involved. When constructing and laying, operations such as pulling, dragging, and tensioning of the above pipelines are often required. Currently, methods such as using an electric roller device for traction, a tractor for traction, or a hoisting gourd for traction are usually adopted for dragging and tensioning. This method has the following disadvantages:

[0003] (1) The traction speed is too fast, which easily causes wear or damage to the pipeline.

[0004] (2) The traction force cannot be controlled, and it cannot be stopped in time when an accidental jam occurs, which easily causes the pipeline to break.

[0005] (3) Most of them are relatively heavy, the equipment volume is large, it is difficult for workers to carry, and it cannot be used in some narrow spaces or working conditions without power supply.

[0006] (4) The pipeline and the like cannot be tensioned for the second time. For example, when the overhead cable becomes loose, this device cannot be used for secondary tensioning, and the application range is relatively limited. Content of the Utility Model

[0007] To solve the above deficiencies in the prior art, the utility model aims to provide a pipeline tensioning device to achieve the purpose of avoiding pipeline damage, being able to be used in a narrow space without power, and being able to perform secondary tensioning.

[0008] To achieve the above purpose, the technical solution adopted by the utility model is as follows: A pipeline tensioning device includes a housing with openings at both ends. One end of the housing is fixedly provided with a first locking device, and the other end of the housing is slidably provided with a sliding member, and a second locking device is fixedly provided on the sliding member;

[0009] Both the first locking device and the second locking device include a locking housing with openings at both ends. At least two locking blocks are arranged in a circumferential array in the locking housing. The locking blocks are wedge-shaped and are slidably arranged in the locking housing along the opening direction of the locking housing;

[0010] The thin end of the wedge-shaped block of the first locking device is arranged towards the outside of the housing, and the thin end of the wedge-shaped block of the second locking device is arranged towards the inside of the housing. When the sliding member moves in a direction away from the first locking device, the wedge-shaped block in the second locking device is in a locked state, and the wedge-shaped block in the first locking device is in a released state. When the sliding member moves in a direction close to the first locking device, the wedge-shaped block in the first locking device is in a locked state, and the wedge-shaped block in the second locking device is in a released state.

[0011] As a limitation to the present utility model: Linkage plates are movably arranged in the locking shells of the first locking device and the second locking device. One side of each linkage plate is connected to the thick end of the wedge-shaped block, and the other side of the linkage plate is connected to a return spring. The end of the return spring away from the linkage plate is fixedly arranged in the corresponding locking shell, and the linkage plate penetrates through the corresponding locking shell and extends out.

[0012] As a limitation to the present utility model: At least two "L"-shaped card slot openings are circumferentially arrayed on both the first locking shell and the second locking shell. One edge of each "L"-shaped card slot opening is arranged along the opening direction of the locking shell. A hand push handle adapted to the card slot opening is fixedly arranged on the linkage plate, and the hand push handle of the linkage plate penetrates through the corresponding locking shell through the card slot opening and extends out.

[0013] As a limitation to the present utility model: The side surface of the locking block facing the axis of the locking shell is an inner concave arc surface adapted to the pipeline, and pressure grooves for anti-slip are arranged on the inner concave arc surface.

[0014] As a limitation to the present utility model: Both ends of the locking shells of the first locking device and the second locking device are conical. The end where the shell is fixedly provided with the first locking device, and the end where the sliding component is fixedly provided with the second locking device are both fixedly provided with funnel-shaped connecting stop mouths adapted to the conical shape.

[0015] As a limitation to the present utility model: A connecting flange for fixing the pipeline tensioning device is fixedly arranged on the shell.

[0016] As a limitation to the present utility model: The sliding component includes a sliding cylinder. At least two guiding slot openings are arranged on the shell. One end of the outer wall of the sliding cylinder is fixedly provided with a driving pin penetrating through the guiding slot opening, and the sliding cylinder is slidably sleeved in the guiding slot opening of the shell through the driving pin. The other end of the outer wall of the sliding cylinder is fixedly provided with the second locking device.

[0017] As a limitation to the present utility model: The sliding component further includes a driving handle for driving the sliding cylinder to slide.

[0018] As a limitation to the present utility model: The driving handle includes a handle rod and a fork. The end of the handle rod is rotatably connected to the shell. The fork is "U"-shaped. The middle of the fork is fixedly arranged at the end where the handle rod is connected to the shell. Both ends of the fork are sleeved on the driving pin. When the handle rod rotates, the fork flips to drive the driving pin to slide in the guiding slot opening.

[0019] Due to the adoption of the above technical solution, compared with the prior art, the beneficial effects achieved by the present utility model are as follows:

[0020] Protective: During the tensioning process of the present utility model, the first locking device and the second locking device alternately hold the pipeline tightly. This not only enables secondary tensioning of the pipeline but also avoids abrasion or damage to the pipeline. At the same time, the cyclic pulling also prevents the situation where an accident cannot be stopped in time during continuous pulling, further protecting the pipeline.

[0021] Portable: The device in the present utility model has a simple and lightweight structure, can be carried by a single person, reducing the labor intensity of personnel. It has a small volume, enabling it to be used in narrow spaces. At the same time, since the device of the present utility model is manually operated, there is no need to consider the problem of power supply, and it can be used under non-electric conditions.

[0022] High adaptability: The present utility model is applicable not only to the tensioning of cables but also to the tensioning of various pipeline-shaped structures such as steel wires, steel pipes, and steel bars. And because the locking blocks are wedge-shaped, it can be applicable to pipelines with a wide range of outer diameters. When the outer diameter of the pipeline exceeds the maximum inner diameter enclosed by the locking blocks, it can be matched by replacing the first locking device and the second locking device.

[0023] Economical: The device in the present utility model has a simple structure, is convenient to process, and has a low price.

[0024] In summary, the present utility model combines protectiveness, portability, high adaptability, and economy, and is applicable to the tensioning of all pipeline-shaped structures such as pipelines and steel wires. Brief Description of the Drawings

[0025] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0026] Figure 1 is a schematic three-dimensional structure diagram of an embodiment of the present utility model;

[0027] Figure 2 is a schematic structure diagram of the housing in an embodiment of the present utility model;

[0028] Figure 3 is a schematic structure diagram of the sliding cylinder in an embodiment of the present utility model;

[0029] Figure 4 is a schematic internal structure diagram of the first locking device and the second locking device in an embodiment of the present utility model;

[0030] Figure 5 is a schematic structure diagram of the locking housing in an embodiment of the present utility model;

[0031] Figure 6 is a schematic structure diagram of the locking block in an embodiment of the present utility model;

[0032] Figure 7 is a schematic structure diagram of the linkage plate in an embodiment of the present utility model;

[0033] Figure 8 This is a schematic structural diagram of the drive handle in the embodiment of the present utility model;

[0034] Figure 9 This is a schematic structural diagram of the housing and the sliding member in the embodiment of the present utility model;

[0035] Figure 10 This is a schematic use diagram of the embodiment of the present utility model;

[0036] Figure 11 This is a schematic diagram of step S1 in the usage method of the present utility model;

[0037] Figure 12 This is a schematic diagram of step S2 in the usage method of the present utility model;

[0038] Figure 13 This is a schematic diagram of step S3 in the usage method of the present utility model;

[0039] Figure 14 This is a schematic diagram of step S5 in the usage method of the present utility model.

[0040] In the figure: 1 - housing, 11 - connecting flange, 12 - hinge seat, 13 - guiding notch, 14 - connecting stop;

[0041] 2 - sliding member, 21 - sliding cylinder, 22 - driving pin, 23 - handle rod, 24 - connecting ear, 25 - fork, 26 - driving card slot;

[0042] 3 - first locking device, 31 - locking housing, 32 - fastening groove, 33 - locking block, 331 - slide rail, 332 - pressing groove, 333 - clamping block, 34 - locking notch, 35 - locking sliding groove, 36 - linkage plate, 361 - bayonet, 362 - hand push handle, 37 - return spring, 38 - card slot opening;

[0043] 4 - pipeline;

[0044] 5 - second locking device. Detailed implementation manners

[0045] The following is a description of the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the pipeline tensioning device described herein is a preferred embodiment, which is only used to illustrate and explain the present utility model and does not constitute a limitation to the present utility model.

[0046] The orientation terms such as "upper", "lower", "left", and "right" and the positional relationships in the present utility model are based on the orientation relationships in the attached drawings of the specification of the present utility model. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component must have a specific orientation, a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the content protected by the present utility model.

[0047] Embodiment 1

[0048] As shown in this embodiment Figures 1 to 14 shown, it is a pipeline tensioning device, including a housing 1. One end of the housing 1 is fixedly provided with a first locking device 3, and the other end of the housing 1 is slidably provided with a sliding member 2. A second locking device 5 is fixedly provided on the sliding member 2. By sliding the sliding member 2 in the housing 1, the first locking device 3 and the second locking device 5 alternately lock the pipeline 4 therein, realizing the tensioning and traction of the pipeline 4.

[0049] Specifically, as Figure 2 shown, the housing 1 is a cylindrical structure with openings at both ends. A connecting flange 11 is welded to each side of the housing 1. The connecting flange 11 is a plate structure with through holes provided thereon. The connecting flange 11 is used to fix this embodiment on a bench or other fixing parts during the tensioning operation. An articulated seat 12 is also welded to the top of the housing 1. The articulated seat 12 is also a plate structure with through holes provided thereon, which is used to match with the sliding member 2. On both sides of the housing 1, an oblong guiding notch 13 is axially opened along the housing 1, which is used to match with the sliding member 2. One end of the housing 1 for fixedly installing the first locking device 3 is fixedly provided with a funnel-shaped connecting stop 14 for cooperating with the first locking device 3. Four through holes for installing the first locking device 3, which penetrate the connecting stop 14 and the housing 1, are circumferentially arranged on the connecting stop 14.

[0050] A sliding member 2 is slidably sleeved inside the end of the housing 1 far from the first locking device 3. The sliding member 2 includes a sliding cylinder 21 slidably sleeved in the housing 1. As Figure 3 shown, on both sides of one end of the outer wall of the sliding cylinder 21, driving pins 22 for penetrating the guiding notch 13 are fixedly provided. The sliding cylinder 21 is slidably sleeved in the guiding notch 13 of the housing 1 through the driving pins 22. A funnel-shaped connecting stop 14 for cooperating with the second locking device 5 is fixedly provided at the other end of the outer wall of the sliding cylinder 21. Four through holes for installing the second locking device 5, which penetrate the connecting stop 14 and the sliding cylinder 21, are circumferentially arranged on the connecting stop 14, so that the second locking device 5 is fixedly provided at the other end of the sliding cylinder 21.

[0051] The structures of the first locking device 3 and the second locking device 5 are the same. As Figure 4 、 Figure 5As shown in the figure, both of them include a locking shell 31 with openings at both ends. The middle part of the locking shell 31 is a hollow cylindrical structure. Both ends of the locking shell 31 are conical, which are used to fit with the funnel-shaped connecting stop 14 to achieve self-centering. Four fastening grooves 32 are evenly distributed on the circumference of each conical structure, which are used to fit with the through holes on the connecting stop 14. Fasteners are installed therein to fix the first locking device 3 and the second locking device 5 in the housing 1 and the sliding cylinder 21 respectively. Four locking blocks 33 are arranged in a circumferential array in the locking shell 31. As Figure 6 shown, the locking block 33 is wedge-shaped and is slidably arranged in the locking shell 31 along the opening direction of the locking shell 31. Specifically, a conical locking groove 34 that matches the inclination angle of the locking block 33 is provided on the inner wall of the locking shell 31 to accommodate the locking block 33. The narrow end of the locking groove 34 faces outward and the wide end faces inward, so that the thin end of the locking block 33 faces outward and the thick end faces inward. Four locking chutes 35 are evenly opened in the locking groove 34 along the opening direction of the locking shell 31, that is, the length direction of the locking shell 31. A slide rail 331 that is in clearance fit with the locking chute 35 is provided on the top of the locking block 33, so that the locking block 33 can slide flexibly in the corresponding locking device. Further, the side surface of the locking block 33 facing the axis of the locking shell 31 is an inner concave arc surface for fitting with the pipeline 4. Anti-slip pressure grooves 332 are provided on the inner concave arc surface. The pressure grooves 332 are arranged along the length direction of the corresponding locking device to increase the friction between the locking block 33 and the pipeline 4 and ensure that the locking block 33 can hold the pipeline 4 tightly. The four locking blocks 33 cooperate together to clamp the pipeline 4. Of course, the number of locking blocks 33 can also be adjusted according to needs, as long as the number of locking blocks 33 is more than two and they can cooperate together to clamp the pipeline 4.

[0052] To facilitate the loosening of the pipeline 4, a linkage plate 36 is also movably arranged in the locking shell 31. As Figure 7As shown, the main body of the linkage plate 36 is circular and is located in the locking housing 31. Four bayonets 361 are provided on the circumferential direction of the linkage plate 36. A clamping block 333 that is adapted to the bayonet 361 and can be clamped in the bayonet 361 is provided at the thick end of the locking block 33. The cross-section of the clamping block 333 is "T"-shaped, and the vertical surface of the "T"-shaped structure is clamped in the bayonet 361, so that one side of the linkage plate 36 is connected to the thick end of the wedge block. A return spring 37 is fixedly connected to the other side of the linkage plate 36. A spring fixing table surface is formed on the inner wall of the locking housing 31, so that the end of the return spring 37 away from the linkage plate 36 abuts against the corresponding locking housing 31. Four push handles 362 are integrally provided outward on the main body of the linkage plate 36. Correspondingly, at least two "L"-shaped slot openings 38 are provided in a circumferential array on the locking housing 31. One edge of the "L"-shaped slot opening 38 is arranged along the opening direction of the locking housing 31, and the other edge is arranged along the radial direction of the locking housing 31. The size of the slot opening 38 is adapted to the push handle 362, so that the push handle 362 passes through the corresponding locking housing 31 and extends out through the slot opening 38. When the push handle 362 is located at the turning point of the "L"-shaped slot opening 38, the position of the linkage plate 36 can compress the return spring 37 and make the locking block 33 located at the widest part of the locking slot 34, that is, the locking blocks 33 are in a separated state at this time. Since the push handle 362 is fixedly connected to the locking block 33, by pushing the push handle 362, the relative position of the locking block 33 in the locking housing 31 can be controlled, and then the locking block 33 can be tightened or loosened from the pipeline 4.

[0053] The sliding member 2 further includes a driving handle for driving the sliding of the sliding cylinder 21. As Figure 8 、 Figure 9 shown, the driving handle includes a long rod-shaped handle rod 23. Two connecting ears 24 are fixedly provided at the end of the handle rod 23. The connecting ears 24 are rotatably connected to the hinge seat 12 of the housing 1 through a connecting pin. The driving handle further includes a "U"-shaped fork 25. The middle of the fork 25 is fixedly provided between the handle rod 23 and the connecting ear 24. A long circular hole-shaped driving slot 26 is provided at each end of the fork 25. The connection between the fork 25 and the sliding cylinder 21 is realized by sleeving the driving slot 26 on the driving pin 22, so that the "U"-shaped structure of the fork 25 straddles the housing 1. When the handle rod 23 rotates, the fork 25 flips to drive the driving pin 22 to slide in the guiding slot opening 13.

[0054] When the first locking device 3 and the second locking device 5 are installed in the housing 1 and the sliding cylinder 21, the thin end of the wedge block of the first locking device 3 is arranged towards the outside of the housing 1, and the thin end of the wedge block of the second locking device 5 is arranged towards the inside of the housing 1.

[0055] As Figure 10As shown, the pipeline 4 is inserted into the first locking device 3 and then extended out of the second locking device 5. When the handle bar 23 is pulled to the left and the slide 21 is driven to move in the direction away from the first locking device 3, the wedge block in the second locking device 5 is in a locked state, and the wedge block in the first locking device 3 is in a loose state, so that the second locking device 5 drives the pipeline 4 to be pulled to the right side of the figure. After being pulled to the limit position, the handle bar 23 drives the slide 21 to move in the direction close to the first locking device 3. At this time, the wedge block in the first locking device 3 is in a locked state, so that the pipeline 4 remains stationary, and the wedge block in the second locking device 5 is in a loose state to avoid damage to the pipeline 4. At the same time, the second locking device 5 holds the pipeline 4 on the left side, completing a pulling cycle. Repeating the above pulling cycle can achieve the tensioning of the pipeline 4. It should be noted that the pipeline 4 used for pulling in this embodiment can be a cable, or any other pipeline structure such as a wire rope, a steel pipe, or a steel bar.

[0056] Furthermore, the method of using this embodiment includes the following steps:

[0057] S1, fix the pipeline 4 tensioning device in Example 1 in a stable position through the connecting flange 11 on the housing 1, such as Figure 11 As shown, the pipeline 4 to be tensioned or pulled is inserted into the housing 1, and the pipeline 4 is inserted from the thin end of the wedge-shaped locking block 33 of the first locking device 3 and extends from the thick end of the wedge-shaped locking block 33 of the second locking device 5. The pipeline 4 is locked by the locking blocks 33 of the first locking device 3 and the second locking device 5 and cannot be loosened;

[0058] S2, such as Figure 12 As shown, the handle bar 23 is pulled toward the first locking device 3, the handle bar 23 drives the slide 21 of the sliding component 2 to move away from the first locking device 3, and the sliding component 2 drives the second locking device 5 to move away from the first locking device 3. At this time, the locking block 33 in the first locking device 3 releases the pipeline 4, so that the pipeline 4 can move with the second locking device 5;

[0059] S3, such as Figure 13 As shown, when the handle rod 23 moves to the limit in the direction of the first locking device 3, the handle rod 23 is pulled toward the side of the second locking device 5, so that the slide 21 of the sliding component 2 moves toward the direction close to the first locking device 3. At this time, the locking block 33 in the first locking device 3 receives the friction force and holds the pipeline 4 again. At the same time, the locking block 33 in the second locking device 5 is loosened to avoid damage to the pipeline 4, completing a tensioning and pulling cycle.

[0060] S4, repeat the actions in S1 to S3 to complete multiple tensioning and pulling cycles until the tensioning degree of the pipeline 4 reaches the expected level.

[0061] S5, after the tension of pipeline 4 reaches the expected level,Figure 14 As shown, push the hand push handle 362 on the linkage plate 36 in the first locking device 3 and the second locking device 5 towards the thick end side of the locking block 33. After pushing it to the turning position of the "L"-shaped card slot opening 38, continue to rotate it along the direction of the "L"-shaped card slot opening 38, and lock the hand push handle 362 in the radial part of the card slot opening 38. At this time, the return spring 37 is compressed, the locking blocks 33 are separated from each other, the pipeline 4 is loosened, and the pipeline 4 can be withdrawn from the pipeline tensioning device. Similarly, in this embodiment, the pipeline 4 for pulling can be a cable, or other arbitrary pipeline structures such as a steel wire rope, a steel pipe, or a steel bar.

Claims

1. A pipeline tensioning device, characterized in that: A shell having openings at both ends, wherein a first locking device is fixedly arranged at one end of the shell, and a sliding component is slidably arranged at the other end of the shell, and a second locking device is fixedly arranged on the sliding component; The first locking device and the second locking device both include a locking shell with openings at both ends, wherein at least two locking blocks are arranged in a circumferential array in the locking shell, and the locking blocks are wedge-shaped and are slidably arranged in the locking shell along the opening direction of the locking shell; The thin end of the wedge block of the first locking device is arranged toward the outside of the shell body, and the thin end of the wedge block of the second locking device is arranged toward the inside of the shell body. When the sliding part moves in the direction away from the first locking device, the wedge block in the second locking device is in a locked state, and the wedge block in the first locking device is in a loose state. When the sliding part moves in the direction close to the first locking device, the wedge block in the first locking device is in a locked state, and the wedge block in the second locking device is in a loose state.

2. A pipeline tensioning device according to claim 1, characterized in that: A linkage plate is movably arranged in the locking shells of the first locking device and the second locking device, one side of the linkage plate is connected to the thick end of the wedge block, and the other side of the linkage plate is connected to a return spring, and the return spring is fixed in the corresponding locking shell at one end away from the linkage plate, and the linkage plate extends through the corresponding locking shell.

3. A pipeline tensioning device according to claim 2, characterized in that: At least two "L"-shaped slots are arranged in a circumferential array on the first locking shell and the second locking shell, one edge of the "L"-shaped slot is arranged along the opening direction of the locking shell, and a push handle matched with the slot is fixed on the linkage plate, and the push handle of the linkage plate passes through the slot and extends out from the corresponding locking shell.

4. A pipeline tensioning device according to claim 1, characterized in that: A side surface of the locking block facing the axis of the locking shell is an inner concave arc surface for matching with the pipeline, and a pressing groove for anti-slip is arranged on the inner concave arc surface.

5. A pipeline tensioning device according to claim 1, characterized in that: Both ends of the locking shells of the first locking device and the second locking device are tapered, one end of the first locking device is fixed to the shell, and one end of the second locking device is fixed to the sliding component, both of which are fixed with funnel-shaped connecting stops that are compatible with the tapered shape.

6. A pipeline tensioning device according to claim 1, characterized in that: A connecting flange for fixing the pipeline tensioning device is fixedly arranged on the shell.

7. A pipeline tensioning device according to any one of claims 1 to 6, characterized in that: The sliding component includes a slide cylinder, and at least two guide slots are opened on the shell. A driving pin passing through the guide slot is fixedly provided at one end of the outer wall of the slide cylinder. The slide cylinder is slidably sleeved in the guide slot of the shell through the driving pin, and a second locking device is fixedly provided at the other end of the outer wall of the slide cylinder.

8. A pipeline tensioning device according to claim 7, characterized in that: The sliding component also includes a driving handle for driving the slide cylinder to slide.

9. A pipeline tensioning device according to claim 8, characterized in that: The driving handle includes a handle rod and a shift fork. The end of the handle rod is rotatably connected to the shell. The shift fork is "U"-shaped. The middle part of the shift fork is fixed to the end of the handle rod connected to the shell. The two ends of the shift fork are sleeved on the driving pin. When the handle rod rotates, the shift fork flips and drives the driving pin to slide in the guide groove.

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