Polyethylene pipe straightening and fixing device
By designing a straightening and fixing device for polyethylene pipes, the problems of non-straight and misaligned pipe connections in existing technologies have been solved, achieving efficient and stable pipe connection and welding results.
Patent Information
- Application Number
- CN202520196584.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-08
AI Technical Summary
Before connecting polyethylene pipes, the existing technology lacks effective straightening and fixing devices, resulting in pipe connections that are not straight, misaligned, or bent, which affects welding quality and increases the risk of leakage.
A device comprising a main mounting beam, a fixed crossbar, an adjustment assembly, and a clamping unit is designed. The adjustment assembly and clamping unit are used to straighten and fix the polyethylene pipe, and the cooperation of the drive unit and the clamping unit is used to ensure that the pipe connection ends are aligned.
It improves the stability and welding quality of polyethylene pipe connections, reduces operational difficulty and errors, and enhances the reliability and safety of connections.
Smart Images
Figure CN223864309U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of pipe connection technology, and in particular to a polyethylene pipe straightening and fixing device. Background Technology
[0002] Polyethylene pipes, also known as PE pipes, are widely used in water supply, municipal engineering, industrial plants, and agricultural irrigation due to their excellent low-temperature impact resistance, flexibility, and corrosion resistance. The connection and installation of polyethylene pipes primarily employ three methods: heat fusion, electrofusion, and mechanical connection. To ensure the long-term safe use of the pipeline system, in addition to strictly adhering to operating specifications during polyethylene pipe construction, careful attention must be paid to factors that may affect the connection quality.
[0003] When connecting two polyethylene pipes, if the pipes are not straight, it will increase the resistance to the flow of the medium, affecting the normal operation and efficiency of the pipeline system. Furthermore, misalignment or bending between the pipe ends can lead to uneven welding, increasing the risk of leakage during subsequent use. Therefore, straightening is the first step before connecting polyethylene pipes. Straightening the connection ends of the two polyethylene pipes ensures that their centers are on the same axis, improving welding quality, joint strength, and reducing the resistance of the inner wall of the pipe connection to the medium. However, in actual construction, workers often use methods such as placing wooden boards or bricks under the polyethylene pipes to be connected to adjust the state of the two pipe ends. This is inconvenient, and the pipes are not well fixed on the boards or bricks, easily leading to misalignment. Therefore, there is an urgent need for a straightening and fixing device specifically designed for connecting polyethylene pipes. Utility Model Content
[0004] This application provides a polyethylene pipe straightening and fixing device, which helps workers straighten and fix two polyethylene pipes to be connected when it is necessary to connect polyethylene pipes.
[0005] The above-mentioned objective of this application is achieved through the following technical solution:
[0006] A polyethylene pipe straightening and fixing device includes two parallel main mounting beams, with a gap between the two main mounting beams and two parallel fixing crossbars fixedly connected between them, the two fixing crossbars being perpendicular to the two main mounting beams;
[0007] Below the two main mounting beams, two adjustment components are also provided at intervals along their length, and the two adjustment components are respectively located directly below the two fixed crossbars. The adjustment components can adjust the position of the pipe to be connected in the vertical direction.
[0008] The adjustment assembly includes two vertical channel steels with their open sides close to each other. A traction frame is slidably connected between the two vertical channel steels in the vertical direction. The upper end of the traction frame is connected to a drive unit, which can drive the traction frame to move freely in the vertical direction within the two vertical channel steels. A clamping unit for fixing the pipe to be connected is installed at the lower end of the traction frame.
[0009] Furthermore, the traction frame is a rectangular frame, the length of which is equal to the distance between the two opening sides of the vertical channel steel, and the two ends of the rectangular frame along its length are respectively movably inserted into the openings of the two vertical channel steels at corresponding positions.
[0010] Furthermore, the drive unit includes a hanging rope fixedly tied to the middle position of the crossbeam on the rectangular frame, a first guide wheel installed at the middle position of the fixed crossbar, a second guide wheel installed on one side of one of the main mounting beams, and a manual winch fixedly installed on the outer wall of the vertical channel steel below the second guide wheel; the manual winch is wound with a traction steel wire, the free end of the traction steel wire passing around the outside of the second guide wheel and the first guide wheel in sequence and then penetrating the fixed crossbar vertically downwards, and the free end of the traction steel wire continues downwards after penetrating the fixed crossbar and is fixedly connected to the hanging rope.
[0011] Furthermore, the clamping unit includes two mutually symmetrical movable clamping arms. The upper ends of the two movable clamping arms are hinged to the lower crossbeam of the rectangular frame. A fixing block is provided between the upper ends of the two movable clamping arms and fixedly connected to the middle position of the lower crossbeam of the rectangular frame. A driving screw is inserted through the fixing block in the vertical direction and the two are threaded together. The lower end of the driving screw is connected to a driving assembly. When the driving screw rotates, it causes the two movable clamping arms to swing synchronously through the driving assembly.
[0012] Furthermore, the drive assembly includes through guide slots respectively formed on two movable clamping arms, and a drive arm disposed below the drive screw. The lower end of the drive screw is rotatably connected to the middle position of the upper end of the drive arm. The two ends of the drive arm are respectively movably connected to the two through guide slots by a pin. The pin can move freely along its length direction within the corresponding through guide slot.
[0013] Furthermore, a clamping part is welded to the adjacent ends of the two movable clamping arms and the lower end of the drive arm.
[0014] Furthermore, each of the three clamping parts is threaded with a fastening bolt, and the axes of the three fastening bolts intersect at the same point.
[0015] Furthermore, each of the vertical channel steels is equipped with a track wheel at its lower end.
[0016] Furthermore, a push handle is fixedly connected between one end of each of the two main mounting beams.
[0017] In summary, this application includes at least one of the following beneficial technical effects:
[0018] When connecting polyethylene pipes, the device of this application is moved to the pipe to be connected. After confirming the position to be straightened, the on-site worker first operates one drive unit to lower the clamping unit in the corresponding adjustment component, using the clamping unit to clamp one part of the pipe to be straightened. Then, the other drive unit is operated to lower the clamping unit in the corresponding adjustment component, using the clamping unit to clamp the other part of the pipe to be connected. Next, the clamped pipe can be adjusted by operating the two drive units until its end to be connected is straightened. Then, the other polyethylene pipe to be connected is also straightened in the same way, and the straightened polyethylene pipe is aligned with the previously straightened polyethylene pipe connection end, and the connection operation can be performed. Compared with the prior art, this application uses a dedicated clamping unit to fix the polyethylene pipe to be connected, which makes the polyethylene pipe more stable during connection. Moreover, this application achieves the straightening of polyethylene pipes through the adjustment component, which is significantly more convenient and easier to operate than workers lifting and moving by hand, and the adjustment accuracy is also higher. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure of this application;
[0021] Figure 2 This is a side view of this application.
[0022] Reference numerals: 1. Main mounting beam; 2. Fixed crossbar; 3. Adjustment assembly; 31. Vertical channel steel; 32. Rectangular frame; 33. Drive unit; 331. Hanging rope; 332. First guide wheel; 333. Second guide wheel; 334. Manual winch; 335. Traction wire; 34. Clamping unit; 341. Movable clamping arm; 342. Fixing block; 343. Drive screw; 344. Drive assembly; 3441. Through guide groove; 3442. Drive arm; 3443. Pin; 4. Clamping part; 5. Fastening bolt; 6. Track wheel; 7. Push handle. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.
[0024] like Figure 1 and Figure 2 As shown, this application discloses a polyethylene pipe straightening and fixing device, which includes two parallel main mounting beams 1. The two main mounting beams 1 are spaced apart and fixedly connected to each other by two parallel fixed crossbars 2. The two fixed crossbars 2 are perpendicular to the two main mounting beams 1. Below the two main mounting beams 1, along their length, two adjusting components 3 are also spaced apart, and the two adjusting components 3 are respectively located directly below the two fixed crossbars 2. The adjusting components 3 can adjust the position of the pipe to be connected in the vertical direction. The adjusting components 3 include two vertical channel steels 31, with their open sides close to each other. A traction frame is slidably connected between the two vertical channel steels 31 in the vertical direction. The upper end of the traction frame is connected to a drive unit 33, which can drive the traction frame to move freely in the vertical direction within the two vertical channel steels 31. A clamping unit 34 for fixing the pipe to be connected is installed at the lower end of the traction frame.
[0025] In the above embodiments, the main mounting beam 1 of this application is connected by two fixed crossbars 2, thus forming a stable integrated frame structure, providing an installation foundation for the two adjusting components 3. The two fixed crossbars 2 are spaced apart, which also creates a gap between the adjusting components 3 located below them. This reduces the risk of the polyethylene pipe bending under gravity when the two adjusting components 3 are used to straighten the pipe to be connected. The specific gap distance can be determined based on the diameter and flexibility of the polyethylene pipe being connected. The traction frame of this application serves as a power transmission unit between the drive unit 33 and the clamping unit 34. Furthermore, its sliding connection with the vertical channel steel 31 makes the vertical movement of the clamping unit 34 more stable.
[0026] When connecting polyethylene pipes at the construction site, workers can move the device of this application to the pipe to be connected. After confirming the position to be straightened, the workers on site first operate one of the drive units 33 to lower the clamping unit 34 in the corresponding adjustment component 3, using the clamping unit 34 to clamp one part of the pipe to be straightened. Then, they operate the other drive unit 33 to lower the clamping unit 34 in the corresponding adjustment component 3, using the clamping unit 34 to clamp the other part of the pipe to be connected. Next, the clamped pipe can be adjusted by operating the two drive units 33 until its end to be connected is straightened. Then, the end to be connected of another polyethylene pipe to be connected is also straightened in the same way, and the straightened polyethylene pipe is aligned with the previously straightened polyethylene pipe connection end, and the connection operation can be performed. Compared to existing technologies, this application uses a dedicated clamping unit 34 to fix the polyethylene pipe to be connected, which makes the polyethylene pipe more stable during connection. Moreover, this application straightens the polyethylene pipe by adjusting the component 3, which is much more convenient and easier to operate than workers lifting and moving it by hand, and the adjustment accuracy is also higher.
[0027] Furthermore, such as Figure 1 and Figure 2 As shown, the traction frame is a rectangular frame 32. The length of the rectangular frame 32 is equal to the distance between the opening sides of the two vertical channel steels 31, and the two ends of the rectangular frame 32 in the length direction are respectively movably inserted into the openings of the two vertical channel steels 31 at the corresponding positions.
[0028] In the above embodiments, the traction frame of this application is configured as described above, and the opening on the vertical channel steel 31 can be used to provide a guide rail. In this way, when the drive unit 33 adjusts the position of the clamping unit 34 in the vertical direction through the traction frame, it effectively prevents the traction frame from swaying in the horizontal direction, thereby ensuring that the polyethylene pipe is straightened linearly and smoothly. There is a certain space between the upper and lower crossbeams of the rectangular frame 32, which provides sufficient operating range for the worker to operate the clamping unit 34.
[0029] Furthermore, such as Figure 1 and Figure 2 As shown, the drive unit 33 includes a hanging rope 331 fixedly tied to the middle position of the crossbeam on the rectangular frame 32, a first guide wheel 332 installed at the middle position of the fixed crossbar 2, a second guide wheel 333 installed on one side of one of the main mounting beams 1, and a manual winch 334 fixedly installed on the outer wall of the vertical channel steel 31 below the second guide wheel 333. A traction steel wire 335 is wound on the manual winch 334. The free end of the traction steel wire 335 passes through the outside of the second guide wheel 333 and the first guide wheel 332 in sequence and then passes through the fixed crossbar 2 vertically. After passing through the fixed crossbar 2, the free end of the traction steel wire 335 continues downward and is fixedly connected to the hanging rope 331.
[0030] In the above embodiments, the manual winch 334 of this application is a winch with a self-locking function. When the clamping unit 34 needs to be moved upward, the traction wire 335 can be retracted by rotating the manual winch 334. During this process, the traction wire 335, guided by the first guide wheel 332 and the second guide wheel 333, transmits force to the rectangular frame 32 through the hanging rope 331. Then, the rectangular frame 32 can move the clamping unit 34 upward. When the clamping unit 34 needs to be moved downward, the worker can rotate the manual winch 334 in the opposite direction to release the traction wire 335. As the traction wire 335 is released, the clamping unit 34, the rectangular frame 32, etc., will move downward with the released traction wire 335 under the action of gravity, thereby realizing the downward movement of the clamping unit 34. It can be seen that in this application, the worker only needs to rotate the manual winch 334 to adjust the vertical position of the clamping unit 34. The operation is not only convenient to control, but also simple in structure and easy to operate and maintain.
[0031] Furthermore, such as Figure 1 and Figure 2As shown, the clamping unit 34 includes two symmetrical movable clamping arms 341. The upper ends of the two movable clamping arms 341 are hinged to the lower crossbeam of the rectangular frame 32. A fixing block 342 is provided between the upper ends of the two movable clamping arms 341 and is fixedly connected to the middle position of the lower crossbeam of the rectangular frame 32. A driving screw 343 is inserted through the fixing block 342 in the vertical direction and the two are threaded together. The lower end of the driving screw 343 is connected to a driving assembly 344. When the driving screw 343 rotates, the two movable clamping arms 341 can swing synchronously through the driving assembly 344.
[0032] In the above embodiments, when the worker rotates the drive screw 343 to move it downward, the drive screw 343 can drive the two movable clamping arms 341 away from each other through the drive assembly 344 until the opening distance between the free ends of the two movable clamping arms 341 is greater than the diameter of the polyethylene pipe to be clamped. At this time, the two movable clamping arms 341 can be clamped on the outside of the polyethylene pipe to be clamped. Then, the worker rotates the drive screw 343 in the opposite direction. During the upward movement of the drive screw 343, the two movable clamping arms 341 will move closer to each other through the drive assembly 344 until the two movable clamping arms 341 clamp the polyethylene pipe. In this way, the fixed effect of the polyethylene pipe to be connected can be achieved. Since the drive screw 343 and the rectangular frame 32 are threadedly connected, there will be a self-locking effect when the drive screw 343 stops rotating, so the clamping effect will be very stable.
[0033] Furthermore, such as Figure 2 As shown, the drive assembly 344 includes through guide grooves 3441 respectively opened on two movable clamping arms 341, and a drive arm 3442 arranged below the drive screw 343. The lower end of the drive screw 343 is rotatably connected to the middle position of the upper end of the drive arm 3442. The two ends of the drive arm 3442 are respectively movably connected to the two through guide grooves 3441 through a pin 3443. The pin 3443 can move freely along its length direction in the corresponding through guide groove 3441.
[0034] In the above embodiments, when the drive screw 343 moves vertically within the fixed block 342, it will move the drive arm 3442 along with it. The pins 3443 at both ends of the drive arm 3442 are respectively movably inserted into the through guide grooves 3441 on the two movable clamping arms 341. As the position of the drive arm 3442 changes in the vertical direction, the two pins 3443 will slide along their respective through guide grooves 3441 while driving the two movable clamping arms 341 to move closer or further away from each other, thereby achieving the effect of clamping and releasing the polyethylene pipe.
[0035] Furthermore, such as Figure 1 and Figure 2 As shown, a clamping part 4 is welded to the close ends of the two movable clamping arms 341 and the lower end of the drive arm 3442.
[0036] In the above embodiments, the clamping part 4 added to the two movable clamping arms 341 and the driving arm 3442 can effectively increase the contact area with the polyethylene pipe when fixing it, thereby improving the fixing effect.
[0037] Furthermore, such as Figure 2 As shown, each of the three clamping parts 4 is threaded with a fastening bolt 5, and the axes of the three fastening bolts 5 intersect at the same point.
[0038] In the above embodiments, after the polyethylene pipe is clamped by the three clamping parts 4, the worker can further tighten the fastening bolts 5 on the three clamping parts 4 so that the ends of the fastening bolts 5 are stuck on the surface of the polyethylene pipe. This can generate greater friction on the surface of the polyethylene pipe and prevent it from being misaligned during the adjustment or connection process.
[0039] Furthermore, such as Figure 1 and Figure 2 As shown, each of the vertical channel steels 31 has a track wheel 6 installed at its lower end.
[0040] In the above embodiments, the track wheel 6 set under the vertical channel steel 31 can move freely along the track. In this way, when two polyethylene pipes to be connected are joined, the entire equipment can be pushed to move along the track. The track can guide their connection to ensure that the connection ports of the two polyethylene pipes are accurately connected.
[0041] Furthermore, such as Figure 1 As shown, a push handle 7 is fixedly connected between one end of each of the two main mounting beams 1.
[0042] In the above embodiments, the push handle 7 provided on the main mounting beam 1 facilitates the movement of the entire equipment by the worker.
[0043] The implementation principle of this embodiment is as follows: When two polyethylene pipes need to be connected, workers can first lay tracks on both sides of the two polyethylene pipes and place two devices of this application on the tracks. First, move one device along the track to the connection port of one of the polyethylene pipes. The worker rotates the manual winch 334 to lower the entire clamping unit 34. Then, rotate the drive screw 343 to open the two movable clamping arms 341 and continue to clamp the lower clamping unit 34. Other workers cooperate to place the part of the polyethylene pipe near the connection end between the movable clamping arm 341 and the drive arm 3442. Then, the worker rotates the drive screw 343 again to clamp the polyethylene pipe with the movable clamping arm 341 and the drive arm 3442. The worker can then perform the same operation on the other adjustment component 3 on the device. After the clamping units 34 in the two adjustment components 3 on the device have clamped the polyethylene pipe, the worker can fine-tune the state of the polyethylene pipe by rotating the two manual winches 334 on the device to ensure that its connection end is in a horizontal state. Next, the worker can refer to the above operation and use another device to fix the connection end of the other polyethylene pipe. At this time, the worker can readjust the manual winches 334 on both devices according to the height of the connection ends of the two pipes to be connected, until the connection ends of the two pipes to be connected are at the same height. Then, one of the devices can be moved along the track to bring the pipe to be connected closer to the other pipe for subsequent connection operations. Compared with the prior art, this application not only provides a device specifically for calibrating and fixing polyethylene pipes, but also is simple and convenient to operate, and the fixing effect on polyethylene pipes is sufficiently stable.
[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A device for straightening and fixing polyethylene pipes, characterized in that: It includes two parallel main mounting beams (1), with a gap between the two main mounting beams (1) and two parallel fixed crossbars (2) fixedly connected between them, and the two fixed crossbars (2) are perpendicular to the two main mounting beams (1); Two adjustment components (3) are provided at intervals below the two main mounting beams (1) along their length direction, and the two adjustment components (3) are respectively located directly below the two fixed crossbars (2). The adjustment components (3) can adjust the position of the pipe to be connected in the vertical direction. The adjustment assembly (3) includes two vertical channel steels (31), with the open sides of the two vertical channel steels (31) close to each other. A traction frame is slidably connected between the two vertical channel steels (31) in the vertical direction. The upper end of the traction frame is connected to the drive unit (33). The drive unit (33) can drive the traction frame to move freely in the vertical direction within the two vertical channel steels (31). A clamping unit (34) for fixing the pipe to be connected is installed at the lower end of the traction frame.
2. The polyethylene pipe straightening and fixing device according to claim 1, characterized in that: The traction frame is a rectangular frame (32). The length of the rectangular frame (32) is equal to the distance between the opening sides of the two vertical channel steels (31), and the two ends of the rectangular frame (32) along the length direction are respectively movably inserted into the openings of the two vertical channel steels (31) at corresponding positions.
3. The polyethylene pipe straightening and fixing device according to claim 2, characterized in that: The drive unit (33) includes a hanging rope (331) fixedly tied to the middle position of the crossbeam on the rectangular frame (32), a first guide wheel (332) installed in the middle position of the fixed crossbar (2), a second guide wheel (333) installed on one side of one of the main mounting beams (1), and a manual winch (334) fixedly installed on the outer wall of the vertical channel steel (31) below the second guide wheel (333). The manual winch (334) is wound with a traction wire (335). The free end of the traction wire (335) passes through the outside of the second guide wheel (333) and the first guide wheel (332) in sequence and then passes through the fixed crossbar (2) vertically. After passing through the fixed crossbar (2), the free end of the traction wire (335) continues downward and is fixedly connected to the hanging rope (331).
4. The polyethylene pipe straightening and fixing device according to claim 2, characterized in that: The clamping unit (34) includes two symmetrical movable clamping arms (341). The upper ends of the two movable clamping arms (341) are hinged to the lower crossbeam of the rectangular frame (32). A fixing block (342) is provided between the upper ends of the two movable clamping arms (341) and fixedly connected to the middle position of the lower crossbeam of the rectangular frame (32). A drive screw (343) is inserted through the fixing block (342) in the vertical direction and the two are threaded together. The lower end of the drive screw (343) is connected to a drive assembly (344). When the drive screw (343) rotates, it drives the two movable clamping arms (341) to swing synchronously through the drive assembly (344).
5. The polyethylene pipe straightening and fixing device according to claim 4, characterized in that: The drive assembly (344) includes through guide grooves (3441) respectively opened on two movable clamping arms (341), and a drive arm (3442) arranged below the drive screw (343). The lower end of the drive screw (343) is rotatably connected to the middle position of the upper end of the drive arm (3442). The two ends of the drive arm (3442) are respectively movably connected to the two through guide grooves (3441) through a pin (3443). The pin (3443) can move freely along its length direction in the corresponding through guide groove (3441).
6. The polyethylene pipe straightening and fixing device according to claim 5, characterized in that: A clamping part (4) is welded to the close ends of the two movable clamping arms (341) and the lower end of the drive arm (3442).
7. The polyethylene pipe straightening and fixing device according to claim 6, characterized in that: Each of the three clamping parts (4) is threaded with a fastening bolt (5), and the axes of the three fastening bolts (5) intersect at the same point.
8. The polyethylene pipe straightening and fixing device according to any one of claims 1 to 5, characterized in that: The lower end of each vertical channel steel (31) is equipped with a track wheel (6).
9. The polyethylene pipe straightening and fixing device according to any one of claims 1 to 5, characterized in that: A push handle (7) is fixedly connected between one end of the two main mounting beams (1).