Device for eliminating residual stress of steel pipe

Abstract

The utility model discloses a device for eliminating residual stress of a steel pipe, which comprises a mounting frame, a plurality of fixing seats are welded on the inner side of the mounting frame at equal intervals, rotating shafts are rotatably mounted on the inner sides of the fixing seats, driving rollers are sleeved on the outer sides of the rotating shafts, a mounting plate is welded on the end surface of one side of each fixing seat, and a plurality of fixing plates are welded on the mounting plate. According to the device, the rotating shaft rotates on the inner side of the fixing base, then a steel pipe can be driven to move between the adjusting roller and the driving roller, the steel pipe can be driven to move between the adjusting roller and the driving roller, and the steel pipe can be driven to move between the adjusting roller and the driving roller. At the moment, the steel pipe can be continuously bent through the adjusting roller and the driving roller, so that stress of the steel pipe is released, the device can adapt to different steel pipes by adjusting the position of the movable roller, the application range of the stress relieving device is further widened, the steel pipe is clamped in the relieving process, the steel pipe can be prevented from deviating, and the practicability is high. The steel pipe is protected from friction damage.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel pipe preparation technical field, concretely for a device for eliminating residual stress of steel pipe. BACKGROUND

[0002] High frequency welded steel pipe can produce certain welding stress in the production process, which can affect the service life and performance of the steel pipe. The steel pipe will be in a curved state without stress relief. When stress relief equipment is used to apply stress to the steel pipe, the steel pipe will be elastically deformed. With the gradual increase of stress, the stress state in the steel pipe is also changing. When it reaches a certain degree, the stress is gradually reduced, and the steel pipe tends to return to the state without stress, i.e. straight line state. In the process of stress relief, the molecular structure in the steel pipe will be rearranged to achieve the lowest energy stable state. By reasonably controlling the size of the applied stress and the speed of stress relief, the stress of the steel pipe itself can be effectively eliminated to meet the use requirements.

[0003] However, the existing steel pipe stress relief equipment mostly lacks clamping devices, which leads to the offset of the steel pipe when eliminating stress of different specifications of steel pipe, resulting in friction and different degrees of damage to the surface of the steel pipe when the steel pipe deformation eliminates stress. In order to avoid the above technical problems, it is necessary to provide a device for eliminating residual stress of steel pipe to overcome the defects in the prior art. UTILITY MODEL CONTENT

[0004] The utility model provides a device for eliminating residual stress of steel pipe, which can effectively solve the problem of the existing steel pipe stress relief equipment mostly lacking clamping devices in the background art, which leads to the offset of the steel pipe when eliminating stress of different specifications of steel pipe, resulting in friction and different degrees of damage to the surface of the steel pipe when the steel pipe deformation eliminates stress.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a device for eliminating residual stress of steel pipe, comprising a mounting frame, a fixed component is mounted on the inner side of the mounting frame;

[0006] The fixed component comprises a fixed seat, a rotating shaft, a drive roller, a mounting plate, a fixed shaft, a bearing, a fixed roller, a sliding groove plate, a sliding rod, a movable roller, a threaded cylinder, a fixed screw, a driven sprocket, a driven chain, a tension pulley, a power motor, a driving sprocket, a transmission sprocket and a transmission chain;

[0007] A plurality of fixed seats are equidistantly welded on the inner side of the mounting frame, rotating shafts are rotatably installed on the inner side of the fixed seats, drive rollers are sleeved on the outer side of the rotating shafts, mounting plates are welded on one side end face of the fixed seats, fixed shafts are welded on the top end of the mounting plates, bearings are sleeved on the outer side of the fixed shafts, and fixed rollers are sleeved on the outer side of the bearings;

[0008] The top end of the mounting plate is welded with a sliding groove plate, the inner side of the sliding groove plate is slidably connected with a sliding rod, the top end of the sliding rod is installed with a movable roller, the top end of the sliding groove plate is welded with a threaded cylinder, and the inner side of the threaded cylinder is threadedly connected with a fixed screw rod.

[0009] The top end of the mounting plate is welded with a sliding groove plate, the inner side of the sliding groove plate is slidably connected with a sliding rod, the top end of the sliding rod is installed with a movable roller, the top end of the sliding groove plate is welded with a threaded cylinder, and the inner side of the threaded cylinder is threadedly connected with a fixed screw rod.

[0010] One end of the rotating shaft is sleeved with a driven sprocket, and a plurality of driven sprockets are sleeved with a driven chain.

[0011] The mounting frame is provided with a power motor on one side end surface, the power motor is connected with a driving sprocket on the transmission end, the outermost side of one rotating shaft close to the power motor is sleeved with a transmission sprocket, and the outer side of the transmission sprocket is meshingly connected with a transmission chain.

[0012] Preferably, the fixing seat is provided with a plurality of fixing seats, and the plurality of fixing seats are equidistantly installed at the inner side of the mounting frame.

[0013] Preferably, the inner side of the fixing seat is provided with a movable groove, and the rotating shaft is rotatably connected with the fixing seat through the movable groove.

[0014] Preferably, the outer side of the rotating shaft is sleeved with a driven sprocket, and the plurality of driven sprockets are meshingly connected with the driven chain.

[0015] Preferably, the top end of the mounting frame is provided with an adjusting assembly.

[0016] The adjusting assembly comprises a lifting screw rod, a positioning cylinder, a positioning shaft, an adjusting roller and an adjusting nut.

[0017] The top end of the mounting frame is slidably connected with a lifting screw rod, the bottom end of the lifting screw rod is welded with a positioning cylinder, the inner side of the positioning cylinder is rotatably installed with a positioning shaft, the outer side of the positioning shaft is sleeved with an adjusting roller, and the outer side of the lifting screw rod is threadedly connected with an adjusting nut.

[0018] Preferably, the adjusting roller is provided with two groups of adjusting rollers, and the two groups of adjusting rollers are symmetrically installed at the top end of the mounting frame.

[0019] Compared with the prior art, the utility model disclose have the beneficial effects that: The utility model discloses scientific and reasonable structure, safe and convenient to use:

[0020] 1、Setting has fixed assembly, through the rotation of the axle in the inboard of fixed base, can drive steel pipe in the middle part of adjusting roller and drive roller moves, can through adjusting roller and drive roller to the continuous bending of steel pipe at this moment, thereby carries out the stress release of steel pipe, and can through the position of movable roller can be adapted to different steel pipe, further promote the application range of eliminating stress device, and in the process of eliminating to the clamping of steel pipe, can prevent the position of steel pipe from deviating, protect the steel pipe from rubbing damage.

[0021] 2、Setting has adjusting assembly, adjusting nut will drive the lift screw to go up and down, will drive the positioning cylinder to go up and down simultaneously when the lift screw goes up and down, and will drive adjusting roller to move when the positioning cylinder moves, so that the interval between adjusting roller and drive roller can be adjusted quickly, the bending curvature of steel pipe can be adjusted quickly, the stress of different steel pipe is eliminated, and the preparation efficiency of steel pipe is improved. DRAWINGS

[0022] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model.

[0023] In the drawings:

[0024] Figure 1 It is the structural schematic diagram of the utility model, and constitutes a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model.

[0025] Figure 2 It is the installation structural schematic diagram of the fixed base of the utility model, and constitutes a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model.

[0026] Figure 3 It is the structural schematic diagram of the fixed assembly of the utility model, and constitutes a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model.

[0027] Figure 4 It is the structural schematic diagram of the adjusting assembly of the utility model, and constitutes a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model.

[0028] Marked number in the drawing: 1, mounting frame;

[0029] 2, fixed assembly; 201, fixed base; 202, rotation shaft; 203, drive roller; 204, mounting plate; 205, fixed shaft; 206, bearing; 207, fixed roller; 208, sliding groove plate; 209, sliding rod; 210, movable roller; 211, threaded cylinder; 212, fixed screw; 213, driven sprocket; 214, driven chain; 215, tension pulley; 216, power motor; 217, driving sprocket; 218, transmission sprocket; 219, transmission chain;

[0030] 3. Adjustment components; 301. Lifting screw; 302. Positioning cylinder; 303. Positioning shaft; 304. Adjusting roller; 305. Adjusting nut. Detailed Implementation

[0031] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0032] Example: Figures 1-4 As shown, this utility model provides a technical solution, a device for eliminating residual stress in steel pipes, including a mounting frame 1, and a fixing component 2 is installed on the inner side of the mounting frame 1;

[0033] The fixed assembly 2 includes a fixed base 201, a rotating shaft 202, a drive roller 203, a mounting plate 204, a fixed shaft 205, a bearing 206, a fixed roller 207, a sliding groove plate 208, a sliding rod 209, a movable roller 210, a threaded cylinder 211, a fixed screw 212, a driven sprocket 213, a driven chain 214, a tensioning wheel 215, a power motor 216, a drive sprocket 217, a transmission sprocket 218, and a transmission chain 219;

[0034] A number of fixed seats 201 are welded at equal intervals on the inner side of the mounting frame 1. A rotating shaft 202 is rotatably mounted on the inner side of each fixed seat 201. A movable groove is opened on the inner side of the fixed seat 201. The rotating shaft 202 is rotatably connected to the fixed seat 201 through the movable groove, which is conducive to the stable driving of the steel pipe. A driving roller 203 is sleeved on the outer side of the rotating shaft 202. A mounting plate 204 is welded to one end face of the fixed seat 201. A fixed shaft 205 is welded to the top of the mounting plate 204. A bearing 206 is sleeved on the outer side of the fixed shaft 205. A fixed roller 207 is sleeved on the outer side of the bearing 206. A number of fixed seats 201 are provided and are installed at equal intervals on the inner side of the mounting frame 1. Two fixed rollers 207 are provided and are symmetrically installed on the two end faces of the fixed seat 201 to facilitate the fixing of the steel pipe.

[0035] The top end of the mounting plate 204 is welded with a sliding groove plate 208, the inner side of the sliding groove plate 208 is slidably connected with a sliding rod 209, the top end of the sliding rod 209 is provided with a movable roller 210, the top end of the sliding groove plate 208 is welded with a threaded cylinder 211, the inner side of the threaded cylinder 211 is threadedly connected with a fixed screw rod 212, the outer side of one end of the rotating shaft 202 is sleeved with a driven sprocket 213, the outer side of a plurality of driven sprockets 213 is sleeved with a driven chain 214, the back surface of the mounting frame 1 is provided with a tension pulley 215 at the corresponding position of the driven chain 214, one side end surface of the mounting frame 1 is provided with a power motor 216, the transmission end of the power motor 216 is connected with a driving sprocket 217, the outer side of one rotating shaft 202 close to the power motor 216 is sleeved with a transmission sprocket 218, the outer side of the transmission sprocket 218 is meshedly connected with a transmission chain 219, the outer side of a plurality of rotating shafts 202 is sleeved with a driven sprocket 213, a plurality of driven sprockets 213 are meshedly connected with the driven chain 214, the transmission chain 219 is meshedly connected with the driving sprocket 217 and the transmission sprocket 218 respectively, so that the power transmission is convenient and stable.

[0036] The top end of the mounting frame 1 is provided with an adjusting assembly 3.

[0037] The adjusting assembly 3 comprises a lifting screw rod 301, a positioning cylinder 302, a positioning shaft 303, an adjusting roller 304 and an adjusting nut 305.

[0038] The top end of the mounting frame 1 is slidably connected with the lifting screw rod 301, the bottom end of the lifting screw rod 301 is welded with the positioning cylinder 302, the inner side of the positioning cylinder 302 is rotatably provided with the positioning shaft 303, the outer side of the positioning shaft 303 is sleeved with the adjusting roller 304, the adjusting roller 304 is provided with two groups, the two groups of adjusting rollers 304 are symmetrically arranged at the top end position of the mounting frame 1, the inner side of the mounting frame 1 is provided with a through groove at the corresponding position of the lifting screw rod 301, so as to facilitate the movement of the lifting screw rod 301, and the outer side of the lifting screw rod 301 is threadedly connected with the adjusting nut 305.

[0039] The working principle and use process of the utility model are as follows: first, the steel pipe needing to eliminate stress is placed at the middle position of the movable roller 210 and the fixed roller 207, then the operator loosens the fixed screw rod 212, so that the position limitation of the fixed screw rod 212 on the sliding rod 209 is released, then the operator can slide the sliding rod 209 on the inner side of the sliding groove plate 208, then the movable roller 210 can be pushed to the outer side position of the steel pipe, so that the steel pipe is clamped by the fixed roller 207 and the movable roller 210, and after clamping, the operator re-tightens the fixed screw rod 212, at this time, the position of the movable roller 210 can be fixed.

[0040] Then the starting force motor 216 drives the transmission chain 219 to rotate, and then the transmission chain 219 drives the transmission sprocket 218 to rotate, and then the transmission sprocket 218 drives the rotating shaft 202 to rotate at a constant speed, and then the driven chain 214 outside the rotating shaft 202 rotates, and the power is transmitted from the driven chain 214 to other rotating shafts 202 under the extrusion of the tensioning wheel 215, and finally all the drive rollers 203 are driven to rotate by the rotating shaft 202, and then the steel pipe can be driven to move in the middle of the adjusting roller 304 and the drive roller 203;

[0041] At this time, the adjusting roller 304 and the drive roller 203 can continuously bend the steel pipe to release the stress of the steel pipe, and the position of the movable roller 210 can be adjusted to adapt to different steel pipes, further improving the application range of the stress relief device, and the steel pipe is clamped during the elimination process, which can prevent the steel pipe from deviating from the position and prevent the steel pipe from being damaged by friction;

[0042] Then, when the stress of the steel pipe of different specifications is eliminated, or when the steel pipe needs to be bent to different curvatures, the operator can rotate the adjusting nut 305, and then the adjusting nut 305 drives the lifting screw 301 to lift, and the positioning cylinder 302 is lifted at the same time, and the adjusting roller 304 is moved when the positioning cylinder 302 moves, so that the distance between the adjusting roller 304 and the drive roller 203 can be quickly adjusted, the bending curvature of the steel pipe can be quickly adjusted, and different steel pipes can be used for stress relief, which improves the preparation efficiency of the steel pipe.

[0043] Finally, it should be noted that: the above only for the preferred examples of the utility model, and not for limiting the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A device for relieving residual stress in steel pipes, comprising a mounting bracket (1), characterized in that: A fixing component (2) is installed on the inner side of the mounting bracket (1); The fixed assembly (2) includes a fixed base (201), a rotating shaft (202), a drive roller (203), a mounting plate (204), a fixed shaft (205), a bearing (206), a fixed roller (207), a sliding groove plate (208), a sliding rod (209), a movable roller (210), a threaded cylinder (211), a fixed screw (212), a driven sprocket (213), a driven chain (214), a tensioning wheel (215), a power motor (216), a drive sprocket (217), a transmission sprocket (218), and a transmission chain (219); The mounting frame (1) has several fixed seats (201) welded at equal intervals on its inner side. Each fixed seat (201) has a rotating shaft (202) rotatably mounted on its inner side. A drive roller (203) is sleeved on the outer side of the rotating shaft (202). A mounting plate (204) is welded to one end face of the fixed seat (201). A fixed shaft (205) is welded to the top of the mounting plate (204). A bearing (206) is sleeved on the outer side of the fixed shaft (205). A fixed roller (207) is sleeved on the outer side of the bearing (206). The top of the mounting plate (204) is welded with a sliding groove plate (208), and a sliding rod (209) is slidably connected to the inner side of the sliding groove plate (208). A movable roller (210) is installed at the top of the sliding rod (209), and a threaded cylinder (211) is welded to the top of the sliding groove plate (208). A fixing screw (212) is threadedly connected to the inner side of the threaded cylinder (211). A driven sprocket (213) is sleeved on the outer side of one end of the rotating shaft (202), and a driven chain (214) is sleeved on the outer side of the multiple driven sprockets (213). A tensioning wheel (215) is installed on the back of the mounting bracket (1) at the position corresponding to the driven chain (214). A power motor (216) is mounted on one end face of the mounting bracket (1). The drive end of the power motor (216) is connected to a drive sprocket (217). A transmission sprocket (218) is sleeved on the outermost side of one of the rotating shafts (202) near the end of the power motor (216). A transmission chain (219) is meshed on the outer side of the transmission sprocket (218).

2. The device for eliminating residual stress in steel pipes according to claim 1, characterized in that: The fixed base (201) is provided in several places, and the fixed base (201) is installed at equal intervals on the inner side of the mounting frame (1). The fixed roller (207) is provided in two places, and the two fixed rollers (207) are symmetrically installed on the two end faces of the fixed base (201).

3. The device for eliminating residual stress in steel pipes according to claim 1, characterized in that: The inner side of the fixed base (201) is provided with a movable groove, and the rotating shaft (202) is rotatably connected to the fixed base (201) through the movable groove.

4. The device for eliminating residual stress in steel pipes according to claim 1, characterized in that: A driven sprocket (213) is sleeved on the outer side of each of the rotating shafts (202), and each of the driven sprockets (213) is meshed with a driven chain (214). The transmission chain (219) is meshed with the driving sprocket (217) and the transmission sprocket (218) respectively.

5. The device for eliminating residual stress in steel pipes according to claim 1, characterized in that: An adjustment component (3) is installed at the top of the mounting bracket (1); The adjustment assembly (3) includes a lifting screw (301), a positioning cylinder (302), a positioning shaft (303), an adjustment roller (304), and an adjustment nut (305); The top of the mounting bracket (1) is slidably connected to a lifting screw (301), the bottom end of the lifting screw (301) is welded to a positioning cylinder (302), the inner side of the positioning cylinder (302) is rotatably mounted with a positioning shaft (303), the outer side of the positioning shaft (303) is sleeved with an adjusting roller (304), and the outer side of the lifting screw (301) is threadedly connected with an adjusting nut (305).

6. The device for eliminating residual stress in steel pipes according to claim 5, characterized in that: Two sets of adjusting rollers (304) are provided, and the two sets of adjusting rollers (304) are symmetrically installed at the top of the mounting frame (1). A through groove is provided on the inner side of the mounting frame (1) at the position corresponding to the lifting screw (301).

Images