PVC pipe rigid spring bending device

Abstract

The utility model provides a PVC pipe rigid spring bends bender, and relates to the hydropower engineering installation technical field, and this PVC pipe rigid spring bends bender, including steel sleeve pipe, force arm, support, fixed wheel and rigid spring, steel sleeve pipe length direction one end is connected with the support, steel sleeve pipe length direction opposite support one side is connected with fixed wheel, steel sleeve pipe is away from fixed wheel one end and is connected with force arm, the recess is set up in the surface circumference of fixed wheel, be provided with the support rod between force arm and fixed wheel, support rod length direction both ends are connected with force arm and fixed wheel fixedly respectively, force arm length direction one side is connected with rigid spring, rigid spring passes through steel sleeve pipe, the force arm is used as the fulcrum to the bending of PVC pipe, avoids the possible fire, scald etc. Safety problem in traditional bends mode, while simple structure is convenient for on -the -spot material to make, reduces construction cost.

Description

Technical Field

[0001] This utility model relates to the field of hydropower engineering installation technology, specifically a PVC pipe spring bending device. Background Technology

[0002] In the construction industry, during the installation of water and electricity systems on the main structure and temporary water and electricity facilities, pipes are pre-buried during the construction phase. PVC pipes are commonly used for pre-buried pipes. In subsequent construction, due to the difference between the pre-buried pipes and the actual laid pipes, it is necessary to bend the pre-buried pipes.

[0003] Currently, cold bending and hot bending are the two most commonly used methods. However, both methods are affected by the operating environment and the experience of the workers, which results in different bending angles for PVC pipes of the same quality under different conditions. At the same time, the surface of the PVC pipe is damaged such as wrinkles and cracks after bending, which leads to the need for rework and re-laying of the pipeline. Summary of the Invention

[0004] The purpose of this utility model is to provide a PVC pipe spring bending tool, which aims to solve the problem that in the general technology, the bending angle of the PVC pipe is different, and the surface of the PVC pipe will be damaged such as wrinkles and cracks after bending, requiring re-laying.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: the PVC pipe spring bending device includes a steel sleeve, a lever arm, a support, a fixed wheel, and a spring. One end of the steel sleeve along its length is connected to the support, the side of the steel sleeve opposite to the support along its length is connected to the fixed wheel, and the end of the steel sleeve away from the fixed wheel is connected to the lever arm. A groove is provided circumferentially on the surface of the fixed wheel. A support rod is provided between the lever arm and the fixed wheel. Both ends of the support rod along its length are fixedly connected to the lever arm and the fixed wheel, respectively. One side of the lever arm along its length is connected to the spring, and the spring passes through the steel sleeve.

[0006] The beneficial effects are as follows: By using a rigid spring, the PVC pipe is fitted onto the spring during the bending process. A force is applied to the lever arm, causing it to bend towards the fixed wheel, thus achieving the bending of the PVC pipe. After reaching the desired bending angle, the lever arm is released, ensuring the PVC pipe maintains the same bending angle. This makes the bending process convenient and quick, improving on-site construction efficiency. The support rod allows the lever arm to drive the PVC pipe through bending, and the PVC pipe is placed in a groove, reducing swaying during bending. The rigid spring fills the inside of the PVC pipe, and its elasticity reduces wrinkles, cracks, and other damage caused by the PVC pipe during bending, lowering the probability of rework due to different working conditions. The lever arm acts as a fulcrum for bending the PVC pipe, avoiding safety issues such as fire and burns that may occur in traditional bending methods. Furthermore, the simple structure facilitates on-site material sourcing and reduces construction costs.

[0007] A further technical solution of this utility model is that a foot pedal is connected to the fixed wheel, and the foot pedal is located on the side of the fixed wheel away from the lever arm.

[0008] The beneficial effect is that the foot pedal allows the foot pedal auxiliary lever arm to apply force to the PVC pipe during the bending process, thereby further improving the bending efficiency of the PVC pipe.

[0009] A further technical solution of this utility model is that the foot pedal is rotatably connected to the fixed wheel.

[0010] The beneficial effect is that the rotational connection between the pedal and the fixed wheel makes it easier for the pedal to move away from the PVC pipe when the bending angle is too large, reducing the probability of the pedal interfering with the bending process by hitting the PVC pipe.

[0011] A further technical solution of this utility model is that a roller is connected to the end of the pedal that is opposite to the fixed wheel in the length direction.

[0012] The beneficial effect is that the rollers allow the PVC pipe to rotate and connect with the PVC pipe when the bending angle is too large, reducing the damage to the PVC pipe surface caused by the large friction between the foot pedal and the PVC pipe.

[0013] A further technical solution of this utility model is that the roller is made of rubber.

[0014] The beneficial effect is that the use of rubber material in the rollers reduces the damage to the surface of the PVC pipe during rotation.

[0015] A further technical solution of this utility model is that the fixed wheel is connected to a base plate, the base plate is horizontally set on the ground, and a mounting frame is provided between the base plate and the fixed wheel. Both ends of the mounting frame in the length direction are rotatably connected to the base plate and the fixed wheel.

[0016] The beneficial effects are: by setting the base plate, when the support bends away from the ground along with the steel sleeve during the bending process of the PVC pipe, the PVC pipe contacts the ground through the base plate, reducing frictional damage caused by direct contact between the PVC pipe and the ground; the mounting bracket is rotatably connected to the base plate and the fixed wheel respectively, which reduces the probability of the base plate interfering with the bending of the PVC pipe during the bending process.

[0017] A further technical solution of this utility model is that the bottom plate is provided with an arc-shaped groove on the side facing the fixed wheel, and the arc-shaped groove is arranged opposite to the groove.

[0018] The beneficial effect is that by opening the arc groove, the PVC pipe is placed in the arc groove, which reduces the slippage of the PVC pipe during bending.

[0019] A further technical solution of this utility model is that the bottom plate has several protrusions on the side opposite to the fixed wheel.

[0020] The beneficial effect is that the friction between the base plate and the ground is increased by several protrusions, which reduces the slippage of the base plate during the bending of the PVC pipe.

[0021] A further technical solution of this utility model is that a handle is connected to the end of the lever arm that is opposite to the fixed wheel in the length direction.

[0022] The beneficial effect is that the handle makes it easier for workers to apply force to the lever arm. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure.

[0024] Figure 2 This is a schematic diagram of the overall structure in the bent state.

[0025] Figure 3 This is a front view of the bent state.

[0026] In the diagram: 0. PVC pipe; 1. Steel sleeve; 2. Lever arm; 3. Bracket; 4. Fixed wheel; 5. Spring; 6. Groove; 7. Support rod; 8. Foot pedal; 81. Rotating rod; 82. Support rod; 83. Mounting rod; 9. Roller; 10. Base plate; 11. Mounting bracket; 12. Arc groove; 13. Protrusion; 14. Handle; 15. Mounting ring. Detailed Implementation

[0027] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0028] like Figures 1-3As shown, a PVC pipe spring bending tool includes a steel sleeve 1, a lever arm 2, a support 3, a fixed wheel 4, and a spring 5. One end of the steel sleeve 1 is fixedly connected to the support 3 along its length. The end of the support 3 facing away from the steel sleeve 1 is in contact with the ground. The side of the steel sleeve 1 facing away from the support 3 is fixedly connected to the fixed wheel 4. The fixed wheel 4 has a mounting groove in its center, the size of which matches the size of the PVC pipe 0. The end of the steel sleeve 1 facing away from the fixed wheel 4 is connected to the lever arm 2. The lever arm 2 and the fixed wheel 4 are on the same side of the steel sleeve 1. A handle 14 is fixedly installed on the section of the lever arm 2 facing away from the steel sleeve 1. A groove 6 is circumferentially formed in the center of the fixed wheel 4, the size of which matches the size of the PVC pipe 0. A support rod 7 is installed between the lever arm 2 and the fixed wheel 4. The two ends of the support rod 7 along its length are fixedly connected to the lever arm 2 and the fixed wheel 4, respectively. One side of the lever arm 2 along its length is connected to the spring 5. A connecting line is fixedly installed at one end of the spring 5 along its length. The end of the connecting line opposite to the spring 5 is fixedly connected to the lever arm 2. The spring 5 passes through the steel sleeve 1. The spring 5 allows the PVC pipe 0 to be sleeved on the outside of the spring 5. The spring 5 fills the inside of the pipe, reducing wrinkles formed on the surface of the pipe during bending. The PVC pipe 0 passes through the steel sleeve 1. When bending, a force is applied to the handle 14, causing the PVC pipe 0 to move towards the fixed wheel 4 under the action of the lever arm 2 and bend during the movement. When the bending angle is reached, the force on the lever arm 2 is released, so that the bending angle of the PVC pipe 0 is uniform. At the same time, it avoids safety problems such as fire and burns that may occur in traditional bending processes. In addition, the combination of the fixed wheel 4, lever arm 2, steel sleeve 1, and spring 5 makes the structure of the bending machine simple, easy to use on-site for material acquisition and manufacturing, and reduces construction costs.

[0029] Reference Figure 1 and Figure 2 A foot pedal 8 is installed on the fixed wheel 4. The foot pedal 8 includes two symmetrically arranged rotating rods 81, two symmetrically arranged support rods 82, and a mounting rod 83. The two ends of the rotating rods 81 are fixedly connected to the rotating rods 81 and the mounting rods 83 respectively along their length. The rotating rods 81 and the mounting rods 83 are arranged parallel to each other, and the mounting rods 83 are arranged perpendicular to the support rods 82. Two mounting rings 15 are fixedly installed on the fixed wheel 4. The two mounting rings 15 are symmetrically installed on the surface of the fixed wheel 4. The two rotating rods 81 are rotatably installed in the two mounting rings 15 respectively. When bending the PVC pipe 0... Workers apply force to the handle 14 and the mounting rod 83 to bend the PVC pipe 0, improving bending efficiency. A roller 9 is fitted on the mounting rod 83. As the bending angle increases, when the mounting rod 83 comes into contact with the PVC pipe 0, the roller 9 contacts the PVC pipe 0 and rolls as the bending angle continues to increase, reducing damage caused by direct contact between the mounting rod 83 and the PVC pipe 0. The roller 9 is made of rubber. In this embodiment, the use of rubber material on the roller 9 reduces damage to the surface of the PVC pipe 0 while rolling.

[0030] Reference Figure 2 and Figure 3 A base plate 10 is rotatably connected to a fixed wheel 4. The base plate 10 is horizontally set on the ground. An mounting bracket 11 is installed between the base plate 10 and the fixed wheel 4. In this embodiment, two mounting brackets 11 are installed, one on each side of the base plate 10 in the width direction. The two mounting brackets 11 are rotatably installed on the side away from the base plate 10 on both sides of the fixed wheel 4 in the length direction. The mounting brackets 11 are in the shape of a "[". Both ends of the mounting bracket 11 in the length direction are rotatably connected to the fixed wheel 4 and the base plate 10. An arc-shaped groove 12 is provided on the base plate 10. The arc-shaped groove 12 is arranged opposite to the groove 6. The size of the arc-shaped groove 12 matches the size of the pipe. When bending, the PVC pipe 0 is placed in the arc-shaped groove 12. The arc-shaped groove 12 and the groove 6 together limit the PVC pipe 0, reducing the probability of displacement and shaking of the PVC pipe 0 during subsequent bending. Several protrusions 13 are fixedly installed on the side of the base plate 10 away from the fixed wheel 4. The protrusions 13 increase the friction between the base plate 10 and the ground, reducing the shaking of the base plate 10 during bending.

[0031] The implementation principle of this embodiment is as follows: the rigid spring 5 is inserted into the PVC pipe 0 to be bent, and then the PVC pipe 0 to be bent is passed through the arc groove 12 until the bending position is in place. Then, force is applied to both the handle 14 and the foot pedal 8, causing the lever arm 2 to slide towards the base plate 10 and simultaneously driving the fixed wheel 4 to rotate towards the base plate 10. After the PVC pipe 0 rotates to the preset bending angle, the force applied to the handle 14 and the foot pedal 8 is released. When the bending angle reaches a certain point, the mounting rod 83 abuts against the surface of the PVC pipe 0. At this time, the force applied to the foot pedal 8 is released, and the PVC pipe 0 continues to be bent under the action of the handle 14. At this time, the roller 9 slides along the surface of the PVC pipe 0. When the bending angle is reached, the foot pedal 8 is rotated towards the lever arm 2, and the steel sleeve 1 is rotated. The PVC pipe 0 is pulled out from the arc groove 12 and then stored. The bending of the next PVC pipe 0 continues.

Claims

1. A PVC pipe spring bending tool, characterized in that... The assembly includes a steel sleeve (1), a lever arm (2), a bracket (3), a fixed wheel (4), and a rigid spring (5). One end of the steel sleeve (1) along its length is connected to the bracket (3). The side of the steel sleeve (1) along its length opposite to the bracket (3) is connected to the fixed wheel (4). The end of the steel sleeve (1) away from the fixed wheel (4) is connected to the lever arm (2). The fixed wheel (4) has a groove (6) circumferentially formed on its surface. A support rod (7) is provided between the lever arm (2) and the fixed wheel (4). The two ends of the support rod (7) along its length are fixedly connected to the lever arm (2) and the fixed wheel (4), respectively. One side of the lever arm (2) along its length is connected to the rigid spring (5). The rigid spring (5) passes through the steel sleeve (1).

2. The PVC pipe spring bending tool according to claim 1, characterized in that, A foot pedal (8) is connected to the fixed wheel (4), and the foot pedal (8) is located on the side of the fixed wheel (4) away from the lever arm (2).

3. The PVC pipe spring bending tool according to claim 2, characterized in that, The foot pedal (8) is rotatably connected to the fixed wheel (4).

4. The PVC pipe spring bending tool according to claim 2, characterized in that, The foot pedal (8) has a roller (9) connected to one end opposite to the fixed wheel (4) in the length direction.

5. The PVC pipe spring bending tool according to claim 4, characterized in that, The roller (9) is made of rubber.

6. The PVC pipe spring bending tool according to claim 1, characterized in that, The fixed wheel (4) is connected to a base plate (10), which is horizontally set on the ground. A mounting frame (11) is provided between the base plate (10) and the fixed wheel (4). Both ends of the mounting frame (11) in the length direction are rotatably connected to the base plate (10) and the fixed wheel (4).

7. The PVC pipe spring bending tool according to claim 6, characterized in that, The base plate (10) has an arc-shaped groove (12) on the side facing the fixed wheel (4), and the arc-shaped groove (12) is arranged opposite to the groove (6).

8. The PVC pipe spring bending device according to claim 6, characterized in that, The bottom plate (10) has several protrusions (13) on the side away from the fixed wheel (4).

9. The PVC pipe spring bending tool according to claim 1, characterized in that, The lever arm (2) is connected to a handle (14) at one end opposite to the fixed wheel (4) in the length direction.

Images