Device for preventing pipe wall from being scratched during bending of long pipe

Abstract

The utility model discloses a device for preventing a pipe wall from being scratched during long pipe bending. Due to the fact that the downward deflection of the pipe is too large due to the dead weight of the pipe, the pipe feeding trolley makes contact with the lower surface of the pipe in the return stroke material taking process, scratches exist on the lower surface of the pipe, and product requirements are not met. The device comprises a locking ring (1) and a roller support (7), the locking ring is connected with the roller support through a positioning shaft (6), and the roller support is connected with two roller sets which are arranged in parallel. The locking ring is composed of two semi-circular ring frames, and the two semi-circular ring frames are connected and fixed through bolts. The long pipe bending device is used for preventing the pipe wall from being scratched when a long pipe is bent.

Description

Technical Field

[0001] The utility model relates to a device for preventing a long pipe from being scratched against a pipe wall when the long pipe is bent. Background Art

[0002] When the pipe bending machine in the pipe plant system was processing long pipes, the downward deflection of the pipe was too large due to the pipe's own weight. The pipe feeding trolley came into contact with the lower surface of the pipe during the return process, causing scratches on the lower surface of the pipe, which did not meet product requirements. Utility Model Content

[0003] The utility model aims to solve the above-mentioned problems and provide a device for preventing a long pipe from being scratched against a pipe wall when the long pipe is bent.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A device for preventing a long tube from being scratched against a tube wall when being bent, comprising a locking ring and a roller bracket, wherein the locking ring and the roller bracket are connected via a positioning shaft, and the roller bracket is connected to two roller groups arranged in parallel;

[0006] The locking ring is composed of two semicircular ring frames, the two semicircular ring frames are connected and fixed by bolts, and the locking ring is provided with a stopper.

[0007] The device for preventing the long tube from scratching the tube wall when bending, the roller group includes a roller, the roller is sleeved with a shaft sleeve, the two ends of the roller are connected to the bearing seat through bearings, and the bearing seat is fixed to the roller bracket by bolts. Beneficial Effects

[0008] 1. The utility model can clamp and support the pipe to prevent the pipe from being deflected too much due to its own weight, and prevent the pipe delivery trolley from scratching the pipe wall when returning to pick up materials, thereby avoiding scratching the lower surface of the pipe and improving the product qualification rate.

[0009] 2. The stopper of the utility model is in close contact with the outer end of the pipe delivery trolley, which plays a role in positioning and preventing the locking ring from moving backward after installation, causing the claw to collide with the roller bracket when it is extended. At the same time, a 1.5mm thick rubber pad is installed between the inner surface of the locking ring and the outer surface of the pipe delivery trolley to prevent the outer surface of the pipe delivery trolley from being damaged after the bolts are tightened and to prevent slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Attached Figure 1 It is the front view of the utility model;

[0011] Attached Figure 2 It is a side view of the utility model;

[0012] Attached Figure 3 It is a schematic diagram of the structure of the utility model when it is used;

[0013] In the figure: 1. locking ring; 2. roller; 3. bushing; 4. baffle; 5. bearing seat; 6. positioning shaft; 7. roller bracket; 8. pipe delivery trolley; 9. pipe; 10. stopper; 11. rubber pad. DETAILED DESCRIPTION

[0014] Reference Figure 1-Figure 2 , a device for preventing a long tube from being scratched against a tube wall when being bent, comprising a locking ring 1 and a roller bracket 7, wherein the locking ring and the roller bracket are connected via a positioning shaft 6, and the roller bracket is connected to two roller groups arranged in parallel;

[0015] The locking ring is composed of two semicircular ring frames, which are fixed by bolt connection, and the locking ring has a stopper 10;

[0016] The roller assembly comprises a roller 2, on which a shaft sleeve 3 is sleeved, and both ends of the roller are connected to a bearing seat 5 via bearings, and the bearing seat is fixed to the roller bracket via bolts.

[0017] Reference Figure 3 A locking ring with a stopper is installed on the outer wall of the pipe delivery trolley, and the stopper is in close contact with the outer end of the pipe delivery trolley to play a role in positioning and preventing the locking ring from moving backward after installation, causing the claw to collide with the roller bracket when it extends. At the same time, a 1.5mm thick rubber pad 11 is installed between the inner surface of the locking ring and the outer surface of the pipe delivery trolley to prevent the outer surface of the pipe delivery trolley from being damaged after the bolts are tightened and to prevent slipping;

[0018] The length of the positioning shaft is designed according to the extension length of the pipe delivery trolley's claws when clamping the pipe. One end is connected to the roller bracket with a thread to prevent the overall size from being too large due to excessive extension. The other end is connected to the locking ring and locked with a nut. Since there are points at both ends of the shaft, the distance between the two is guaranteed.

[0019] The roller bracket is provided with bearing seats at the upper and lower parts respectively, so as to ensure that the pipe delivery trolley can effectively prevent the pipe delivery trolley from scratching the lower surface of the pipe when the pipe delivery trolley rotates 180 degrees.

[0020] The roller is made of nylon, with baffles at both ends positioned and locked with round nuts, and connected to the bearing installed in the bearing seat through the shaft. This ensures that the roller will not damage the surface of the pipe when it contacts the lower surface of the pipe, and can rotate freely with the friction generated by the contact surface.

[0021] After on-site installation, the problem of scratches on the lower surface of the pipe caused by the pipe delivery trolley due to excessive deflection of the pipe under its own weight was solved, meeting product requirements.

Claims

1. A device for preventing a long tube from being scratched when bending the tube, characterized in that: The locking ring and the roller bracket are connected via a positioning shaft, and the roller bracket is connected with two roller groups arranged in parallel; The locking ring is composed of two semicircular ring frames, the two semicircular ring frames are connected and fixed by bolts, and the locking ring is provided with a stopper.

2. The device for preventing the tube wall from being scratched when bending a long tube according to claim 1 is characterized in that: The roller assembly comprises a roller shaft, a shaft sleeve is sleeved on the roller shaft, two ends of the roller shaft are connected to a bearing seat through bearings, and the bearing seat is fixed to the roller bracket through bolts.

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