Tool clamp for welding high-precision heat-resistant steel pipe

Abstract

The invention relates to the technical field of welding, and discloses a high-precision heat-resistant steel pipe welding tool clamp which comprises a welding machining table, a plurality of supporting legs are fixedly connected to the bottom of the welding machining table, and a sliding groove is formed in the top of the welding machining table. According to the device, when the two adjusting rotating shafts continuously move relative to each other, the two extrusion blocks extrude each other, the extrusion blocks extrude the extrusion telescopic rods along the adjusting rotating shafts, and the extrusion blocks drive the inner wall clamping pieces at one ends of the clamping telescopic rods II to move towards the end close to the inner wall of the steel pipe body; by means of the arrangement, the inner wall of the steel pipe body can be conveniently clamped and fixed through the inner wall clamping pieces, on one hand, the welding stability of the steel pipe body is improved, and on the other hand, force generated by the inner wall clamping pieces to the inner wall of the steel pipe body counteracts force generated by the outer wall clamping pieces to the outer wall of the steel pipe body; therefore, the steel pipe body is not interfered by the clamping force in the welding process, and deformation near the welding part of the steel pipe body is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to a tooling fixture for welding high-precision heat-resistant steel pipes. Background Art

[0002] Steel pipe welding fixtures are tools specifically used to fix and support steel pipes during the welding process. They can ensure that the steel pipe maintains the correct posture and position during welding, improve welding accuracy and efficiency, and ensure welding quality. Since the shape of steel pipes is usually round and may involve a variety of welding angles and positions, the design of welding fixtures must be highly flexible and precise.

[0003] The steel pipe welding fixtures under the existing technology can basically meet people's usage requirements, but most of the fixtures under the existing technology fix the steel pipe welding point by directly clamping the outer wall of the steel pipe. When the steel pipe is welded, the welding part will be deformed due to high temperature. At this time, the clamp clamped near the welding part gives the steel pipe a clamping force pointing to the axis. At this time, the deformation of the steel pipe increases under the action of the clamping force. This kind of fixture is not suitable for the welding of high-precision steel pipes. Summary of the invention

[0004] The object of the present invention is to provide a high-precision heat-resistant steel pipe welding fixture to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a fixture for welding high-precision heat-resistant steel pipes, comprising a welding processing table, a plurality of supporting legs are fixedly connected to the bottom of the welding processing table, a sliding groove is provided on the top of the welding processing table, sliding plates are slidably connected to both ends of the sliding groove, a plurality of push racks are fixedly connected to one end of the sliding groove close to the welding processing table, a plurality of limit grooves are provided on the top of the welding processing table, and further comprising:

[0007] The mobile clamping mechanism includes a driving motor fixedly connected to the left side wall of the welding processing table, the output end of the driving motor is fixedly connected to the output shaft, the end of the output shaft away from the driving motor is fixedly connected to the threaded rod, the threaded rod is provided with a plurality of thread grooves, and the sliding plate is rotatably connected to the thread grooves on the threaded rod.

[0008] Furthermore, the mobile clamping mechanism also includes an adjusting motor fixedly connected to the end of the sliding plate away from the welding processing table, the output end of the adjusting motor is fixedly connected to an adjusting shaft, and the end of the pushing frame away from the sliding plate is fixedly connected to a plurality of supporting frames, the supporting frames are slidably connected inside the limiting groove, and a steel pipe body is arranged on the adjusting shaft.

[0009] Furthermore, an auxiliary sliding mechanism is arranged directly above the support frame, and the auxiliary sliding mechanism also includes a rotating frame fixedly connected to the top of the support frame, the interior of the rotating frame is rotatably connected to a rotating ring, the inner wall of the rotating ring is fixedly connected to a plurality of support rods, and the end of the support rod away from the rotating ring is rotatably connected to a rolling column, and the rolling column is in contact with the steel pipe body.

[0010] Furthermore, an outer wall clamping mechanism is provided at one end of the adjusting shaft close to the sliding plate, and the outer wall clamping mechanism includes a fixing ring fixedly connected to one end of the adjusting shaft close to the sliding plate, and an extrusion bottom plate is slidably connected to one end of the adjusting shaft close to the steel pipe body, and an extrusion spring is sleeved on the adjusting shaft.

[0011] Furthermore, the outer wall clamping mechanism also includes an outer wall clamping plate slidably connected to the middle part of the support rod, the top of the outer wall clamping plate is rotatably connected to a plurality of connecting rods, one end of the connecting rod away from the outer wall clamping plate is rotatably connected to the edge of the extrusion bottom plate, and one end of the outer wall clamping plate is fixedly connected to a driving rod.

[0012] Furthermore, an inner wall clamping mechanism is provided at one end of the adjusting shaft away from the sliding plate, and the inner wall clamping mechanism includes a plurality of clamping telescopic rods rotatably connected to one end of the adjusting shaft away from the sliding plate, and one end of the clamping telescopic rods rotatably connected to the inner wall clamping plate.

[0013] Furthermore, the inner wall clamping mechanism also includes an extrusion telescopic rod fixedly connected to the end of the adjusting shaft away from the sliding plate, the end of the extrusion telescopic rod away from the adjusting shaft is fixedly connected to an extrusion block, one end of the extrusion block is rotatably connected to a plurality of clamping telescopic rods 2, and the end of the clamping telescopic rod 2 away from the extrusion block is rotatably connected to the inner wall clamping plate.

[0014] Furthermore, the inner wall clamping mechanism also includes a return spring sleeved on the end of the extrusion telescopic rod away from the adjusting shaft, a groove is opened on the end of the extrusion block away from the extrusion telescopic rod, and a docking block is fixedly connected to the end of the right extrusion block away from the extrusion telescopic rod.

[0015] The present invention has the following beneficial effects:

[0016] (1) The present invention sets an inner wall clamping mechanism. When the welding ends of the two steel pipe bodies are close to each other, the two adjusting shafts are close to each other. At this time, the extrusion and telescopic rods at one end of the two adjusting shafts are close to each other. The extrusion and telescopic rods are close to each other. The right extrusion and telescopic rod drives the groove on the right extrusion block to combine with the docking block on the left extrusion block. At this time, the docking block is inserted into the groove. This arrangement is conducive to ensuring that when the adjusting shaft at one end of the adjusting motor rotates for adjustment, the weld between the two steel pipe bodies remains relatively still; when the two adjusting shafts continue to move relative to each other, the two extrusion blocks squeeze each other. The extrusion block is squeezed to squeeze the telescopic rod along the adjusting shaft, and the extrusion block drives the inner wall clamping piece at one end of the clamping telescopic rod to move toward the end close to the inner wall of the steel pipe body. This arrangement is conducive to the inner wall clamping piece to clamp and fix the inner wall of the steel pipe body. On the one hand, it improves the stability of the steel pipe body welding. On the other hand, the force generated by the inner wall clamping piece on the inner wall of the steel pipe body and the force generated by the outer wall clamping piece on the outer wall of the steel pipe body are offset, thereby ensuring that the steel pipe body will not be disturbed by the clamping force during the welding process, thereby avoiding deformation near the welding part of the steel pipe body.

[0017] (2) According to the present invention, when the steel pipe welding fixture is used, firstly, two steel pipe bodies to be welded are respectively inserted into the adjusting shafts, and the steel pipe bodies slide along the support rod at one end of the rotating ring inside the rotating frame toward the end close to the sliding plate, so that the steel pipes are smoothly loaded; when the steel pipe bodies are loaded, the driving motor is started, and the output end of the driving motor rotates to drive the output rotating shaft to rotate, and the rotation of the output rotating shaft drives the two sliding plates on the threaded rod to move toward each other, and the movement of the sliding plates pushes the steel pipe bodies to move, and at this time, the welding ends of the two steel pipe bodies are close to each other, and at this time, the sliding plates push several support frames on the pushing frame to slide along the limiting groove, and the support frames drive several rotating rings inside the rotating frame to move, and such a setting is helpful to assist the two steel pipe bodies to remain stable when they are close to each other, so that the welding ends of the steel pipe bodies are accurately aligned.

[0018] (3) In the present invention, when the sliding plate pushes the steel pipe body on the adjusting shaft to move, the welding ends of the two steel pipe bodies are squeezed against each other. At this time, the welding ends of the steel pipe bodies are squeezed against each other, and the extrusion base plate at one end of the steel pipe body is pushed to slide along the adjusting shaft toward one end of the sliding plate. The sliding plate squeezes the extrusion spring along the adjusting shaft. At this time, the extrusion spring is squeezed and contracted, and the contraction elastic force of the extrusion spring increases. The extrusion force of the extrusion spring on the steel pipe body at one end of the extrusion base plate increases. This arrangement is conducive to increasing the extrusion force of the welding ends of the two steel pipe bodies, thereby ensuring that the welding ends of the two steel pipe bodies are in close contact and improving the welding quality of the welding ends of the steel pipe bodies.

[0019] (4) The present invention provides an outer wall clamping mechanism. When the extrusion bottom plate is squeezed by the steel tube body and moves along the adjustment shaft, the extrusion bottom plate drives the outer wall clamping pieces at one end of the plurality of connecting rods to slide along the support rod toward the outer wall of the steel tube body. The outer wall clamping pieces drive the outer wall clamping pieces at one end of the driving rod to move toward the outer wall of the steel tube body. This arrangement is conducive to utilizing the mutual squeezing effect of the welding ends of the steel tube body to enable the plurality of outer wall clamping pieces to clamp and fix the side wall of the steel tube body. This arrangement is conducive to transforming the steel tube body in sliding connection with the rolling column into a steel tube body fixedly clamped between the plurality of outer wall clamping pieces, thereby improving the stability of the steel tube body welding.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a partial cross-sectional structural schematic diagram of the present invention;

[0024] Figure 3 It is a partial structural schematic diagram of the mobile clamping mechanism of the present invention;

[0025] Figure 4 For the present invention Figure 3 A magnified view of middle;

[0026] Figure 5 It is a schematic diagram of the structure of the outer wall clamping mechanism of the present invention;

[0027] Figure 6 It is a schematic diagram of the partial structure of the inner wall clamping mechanism of the present invention;

[0028] Figure 7 For the present invention Figure 6 Enlarged view of middle B;

[0029] Figure 8 It is a schematic cross-sectional structure diagram of the inner wall clamping mechanism of the present invention;

[0030] Fig. 9 For the present invention Figure 2 Enlarged view of C in the middle.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] In the figure: 1, welding processing table; 11, supporting leg; 12, sliding groove; 13, sliding plate; 14, pushing frame; 15, limiting groove; 2, mobile clamping mechanism; 201, driving motor; 202, output shaft; 203, threaded rod; 204, adjusting motor; 205, adjusting shaft; 206, supporting frame; 207, steel pipe body; 3, auxiliary sliding mechanism; 301, rotating frame; 302, rotating ring; 303, supporting rod; 3 04. Rolling column; 4. Outer wall clamping mechanism; 401. Fixed ring; 402. Extrusion bottom plate; 403. Extrusion spring; 404. Outer wall clamping plate; 405. Connecting rod; 406. Driving rod; 5. Inner wall clamping mechanism; 501. Clamping telescopic rod one; 502. Inner wall clamping plate; 503. Extrusion telescopic rod; 504. Extrusion block; 505. Clamping telescopic rod two; 506. Reset spring; 507. Groove; 508. Docking block. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1, please refer to Figure 1-Figure 4 As shown, the present invention is a high-precision heat-resistant steel pipe welding fixture, including a welding processing table 1, a plurality of supporting legs 11 are fixedly connected to the bottom of the welding processing table 1, a sliding groove 12 is provided on the top of the welding processing table 1, both ends of the sliding groove 12 are slidably connected to sliding plates 13, a plurality of push racks 14 are fixedly connected to one end of the sliding groove 12 close to the welding processing table 1, a plurality of limit grooves 15 are provided on the top of the welding processing table 1, and further includes:

[0035] The mobile clamping mechanism 2 includes a driving motor 201 fixedly connected to the left side wall of the welding processing table 1, and the output end of the driving motor 201 is fixedly connected to the output shaft 202, and the end of the output shaft 202 away from the driving motor 201 is fixedly connected to the threaded rod 203, and a plurality of thread grooves are opened on the threaded rod 203, and the sliding plate 13 is rotatably connected to the thread grooves on the threaded rod 203.

[0036] The mobile clamping mechanism 2 also includes an adjusting motor 204 fixedly connected to the end of the sliding plate 13 away from the welding processing table 1, and the output end of the adjusting motor 204 is fixedly connected to an adjusting shaft 205. The end of the pushing frame 14 away from the sliding plate 13 is fixedly connected to a plurality of supporting frames 206. The supporting frames 206 are slidably connected to the inside of the limiting groove 15, and a steel pipe body 207 is arranged on the adjusting shaft 205.

[0037] An auxiliary sliding mechanism 3 is arranged directly above the support frame 206, and the auxiliary sliding mechanism 3 also includes a rotating frame 301 fixedly connected to the top of the support frame 206, and the interior of the rotating frame 301 is rotatably connected to a rotating ring 302, and the inner wall of the rotating ring 302 is fixedly connected to a plurality of support rods 303, and the end of the support rod 303 away from the rotating ring 302 is rotatably connected to a rolling column 304, and the rolling column 304 is in contact with the steel pipe body 207. The function of this component is that when the steel pipe welding fixture is used, the two steel pipe bodies 207 to be welded are first inserted into the adjusting shaft 205 respectively, and the steel pipe body 207 slides along the support rod 303 at one end of the rotating ring 302 inside the rotating frame 301 to the end close to the sliding plate 13, This arrangement is conducive to the smooth loading of steel pipes; when the loading of the steel pipe body 207 is completed, the drive motor 201 is started, and the output end of the drive motor 201 rotates to drive the output shaft 202 to rotate, and the rotation of the output shaft 202 drives the two sliding plates 13 on the threaded rod 203 to move toward each other, and the movement of the sliding plate 13 drives the steel pipe body 207 to move. At this time, the welding ends of the two steel pipe bodies 207 are close to each other. At this time, the sliding plate 13 pushes several support frames 206 on the pushing frame 14 to slide along the limiting groove 15, and the support frame 206 drives the rotating ring 302 inside the rotating frame 301 to move. This arrangement is conducive to assisting the two steel pipe bodies 207 to remain stable when approaching each other, so that the welding ends of the steel pipe bodies 207 are accurately aligned.

[0038] Embodiment 2 is different from Embodiment 1 in that: Figure 1-Figure 9 As shown, an outer wall clamping mechanism 4 is provided at one end of the adjusting shaft 205 close to the sliding plate 13, and the outer wall clamping mechanism 4 includes a fixing ring 401 fixedly connected to one end of the adjusting shaft 205 close to the sliding plate 13, and an extrusion bottom plate 402 is slidably connected to one end of the adjusting shaft 205 close to the steel pipe body 207, and an extrusion spring 403 is sleeved on the adjusting shaft 205.

[0039] The outer wall clamping mechanism 4 also includes an outer wall clamping piece 404 slidably connected to the middle part of the support rod 303, and the top of the outer wall clamping piece 404 is rotatably connected to a plurality of connecting rods 405, and one end of the connecting rod 405 away from the outer wall clamping piece 404 is rotatably connected to the edge of the extrusion bottom plate 402, and one end of the outer wall clamping piece 404 is fixedly connected to a driving rod 406. The function of this component is that when the sliding plate 13 pushes the steel pipe body 207 on the adjusting shaft 205 to move, the welding ends of the two steel pipe bodies 207 are The steel tube body 207 is squeezed against each other. At this time, the welded ends of the steel tube body 207 are squeezed against each other. The steel tube body 207 is squeezed and pushes the squeezing bottom plate 402 at one end to slide along the adjusting shaft 205 toward the end close to the sliding plate 13. The sliding plate 13 squeezes the squeezing spring 403 along the adjusting shaft 205. At this time, the squeezing spring 403 is squeezed and contracted, and the contraction elastic force of the squeezing spring 403 increases. The squeezing force of the squeezing spring 403 on the steel tube body 207 at one end of the squeezing bottom plate 402 increases. This arrangement is conducive to increasing the pressure of the two sides. The extrusion force of the welding end of the steel pipe body 207 is increased, thereby ensuring that the welding ends of the two steel pipe bodies 207 are in close contact, and improving the welding quality of the welding ends of the steel pipe body 207; by setting the outer wall clamping mechanism 4, when the extrusion bottom plate 402 is squeezed by the steel pipe body 207 and moves along the adjustment shaft 205, the extrusion bottom plate 402 drives the outer wall clamping pieces 404 at one end of the plurality of link rods 405 to slide along the support rod 303 toward the outer wall of the steel pipe body 207, and the outer wall clamping piece 404 drives the driving rod 406 The outer wall clamping piece 404 at one end moves toward the outer wall close to the steel pipe body 207. This arrangement is beneficial to utilizing the mutual squeezing effect of the welding ends of the steel pipe body 207 so that several outer wall clamping pieces 404 clamp and fix the side wall of the steel pipe body 207. This arrangement is beneficial to transforming the steel pipe body 207 that is in sliding connection with the rolling column 304 into a steel pipe body 207 that is fixedly clamped between several outer wall clamping pieces 404, thereby improving the stability of the welding of the steel pipe body 207.

[0040] An inner wall clamping mechanism 5 is provided at the end of the adjusting shaft 205 away from the sliding plate 13, and the inner wall clamping mechanism 5 includes a plurality of clamping telescopic rods 501 rotatably connected to the end of the adjusting shaft 205 away from the sliding plate 13, and the end of the clamping telescopic rod 501 away from the adjusting shaft 205 is rotatably connected to the inner wall clamping piece 502.

[0041] The inner wall clamping mechanism 5 also includes an extrusion telescopic rod 503 fixedly connected to the end of the adjustment shaft 205 away from the sliding plate 13, and the end of the extrusion telescopic rod 503 away from the adjustment shaft 205 is fixedly connected to an extrusion block 504, and one end of the extrusion block 504 is rotatably connected to a plurality of clamping telescopic rods 505, and the end of the clamping telescopic rod 505 away from the extrusion block 504 is rotatably connected to the inner wall clamping plate 502.

[0042] The inner wall clamping mechanism 5 also includes a return spring 506 sleeved on the end of the extrusion telescopic rod 503 away from the adjusting shaft 205, a groove 507 is provided on the end of the extrusion block 504 away from the extrusion telescopic rod 503, and a docking block 508 is fixedly connected to the end of the right extrusion block 504 away from the extrusion telescopic rod 503. The function of this component is to set the inner wall clamping mechanism 5. When the welding ends of the two steel pipe bodies 207 are close to each other, the two adjusting shafts 205 are close to each other. At this time, the extrusion telescopic rods 503 at one end of the two adjusting shafts 205 are close to each other. The extrusion telescopic rods 503 are close to each other, and the right extrusion telescopic rod 503 drives the groove 507 on the right extrusion block 504 to combine with the docking block 508 on the left extrusion block 504. At this time, the docking block 508 is inserted into the groove 507. This arrangement is conducive to ensuring the rotation of the adjusting shaft 205 at one end of the adjusting motor 204. During adjustment, the weld between the two steel pipe bodies 207 is ensured to remain relatively still; when the two adjusting shafts 205 continue to move relative to each other, the two extrusion blocks 504 squeeze each other, and the extrusion blocks 504 are squeezed along the adjusting shaft 205 to squeeze the telescopic rod 503, and the extrusion block 504 drives the inner wall clamping piece 502 at one end of the clamping telescopic rod 505 to move toward the end close to the inner wall of the steel pipe body 207. This arrangement is conducive to the inner wall clamping piece 502 to clamp and fix the inner wall of the steel pipe body 207, on the one hand, improving the stability of the welding of the steel pipe body 207, on the other hand, the force generated by the inner wall clamping piece 502 on the inner wall of the steel pipe body 207 and the force generated by the outer wall clamping piece 404 on the outer wall of the steel pipe body 207 offset each other, thereby ensuring that the steel pipe body 207 will not be disturbed by the clamping force during the welding process, thereby avoiding deformation near the welding part of the steel pipe body 207.

[0043] A specific application of this embodiment is:

[0044] When using the steel pipe welding fixture, first, the two steel pipe bodies 207 to be welded are respectively inserted into the adjusting shaft 205, and the steel pipe body 207 slides along the support rod 303 at one end of the rotating ring 302 inside the rotating frame 301 to the end close to the sliding plate 13. This arrangement is conducive to the smooth loading of the steel pipe; when the steel pipe body 207 is loaded, the driving motor 201 is started, and the output end of the driving motor 201 rotates to drive the output rotating shaft 202 to rotate, and the output rotating shaft 202 rotates to drive the two sliding plates 13 on the threaded rod 203 to move toward each other, and the sliding plate 13 moves to push the steel pipe body 207 to move, and at this time, the welding ends of the two steel pipe bodies 207 are close to each other, and at this time, the sliding plate 13 pushes the several support frames 206 on the pushing frame 14 to slide along the limiting groove 15, and the support frame 206 drives the rotating ring 302 inside the several rotating frames 301 to move, and this arrangement is conducive to The invention is used to help the two steel tube bodies 207 to remain stable when they are close to each other, so that the welding ends of the steel tube bodies 207 are accurately aligned; when the sliding plate 13 pushes the steel tube body 207 on the adjusting shaft 205 to move, the welding ends of the two steel tube bodies 207 are squeezed against each other. At this time, the welding ends of the steel tube bodies 207 are squeezed, and the squeezing bottom plate 402 at one end of the steel tube body 207 is pushed to slide along the adjusting shaft 205 toward the end close to the sliding plate 13. The sliding plate 13 squeezes the squeezing spring 403 along the adjusting shaft 205. At this time, the squeezing spring 403 is squeezed and contracted, and the contraction elastic force of the squeezing spring 403 increases. The squeezing force of the squeezing spring 403 on the steel tube body 207 at one end of the squeezing bottom plate 402 increases. This arrangement is conducive to increasing the squeezing force of the welding ends of the two steel tube bodies 207, thereby ensuring that the welding ends of the two steel tube bodies 207 are in close contact, and improving the welding quality of the welding ends of the steel tube bodies 207.

[0045] By setting the outer wall clamping mechanism 4, when the extrusion bottom plate 402 is squeezed by the steel pipe body 207 and moves along the adjustment shaft 205, the extrusion bottom plate 402 drives the outer wall clamping pieces 404 at one end of the plurality of link rods 405 to slide along the support rod 303 toward the outer wall of the steel pipe body 207, and the outer wall clamping piece 404 drives the outer wall clamping piece 404 at one end of the driving rod 406 to move toward the outer wall of the steel pipe body 207. This arrangement is conducive to utilizing the mutual squeezing effect of the welding ends of the steel pipe body 207, so that the plurality of outer wall clamping pieces 404 can clamp the steel pipe body 207. 07 is clamped and fixed by the side wall, which is conducive to transforming the steel tube body 207 in sliding connection with the rolling column 304 into a steel tube body 207 fixedly clamped between a plurality of outer wall clamping pieces 404, thereby improving the stability of the welding of the steel tube body 207; by setting the inner wall clamping mechanism 5, when the welding ends of the two steel tube bodies 207 are close to each other, the two adjusting shafts 205 are close to each other, and at this time, the extrusion telescopic rods 503 at one end of the two adjusting shafts 205 are close to each other, and the extrusion telescopic rods 503 on the right side drive The groove 507 on the right extrusion block 504 is combined with the docking block 508 on the left extrusion block 504. At this time, the docking block 508 is inserted into the groove 507. This arrangement is conducive to ensuring that when the adjustment shaft 205 at one end of the adjustment motor 204 is rotated for adjustment, the weld between the two steel pipe bodies 207 remains relatively still; when the two adjustment shafts 205 continue to move relative to each other, the two extrusion blocks 504 squeeze each other, and the extrusion block 504 is squeezed along the adjustment shaft 205 to squeeze the telescopic rod 503, and this extrusion block 504 drives the clamping telescopic rod 505 to clamp the telescopic rod 205. The inner wall clamping piece 502 at the end moves toward the end close to the inner wall of the steel pipe body 207. This arrangement is conducive to the inner wall clamping piece 502 to clamp and fix the inner wall of the steel pipe body 207. On the one hand, it improves the welding stability of the steel pipe body 207. On the other hand, the force generated by the inner wall clamping piece 502 on the inner wall of the steel pipe body 207 and the force generated by the outer wall clamping piece 404 on the outer wall of the steel pipe body 207 are offset, thereby ensuring that the steel pipe body 207 will not be disturbed by the clamping force during the welding process, thereby avoiding deformation near the welding part of the steel pipe body 207.

[0046] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-precision heat-resistant steel pipe welding fixture, comprising a welding processing table (1), the bottom of the welding processing table (1) is fixedly connected to a plurality of support legs (11), the top of the welding processing table (1) is provided with a sliding groove (12), both ends of the sliding groove (12) are slidably connected to sliding plates (13), one end of the sliding groove (12) close to the welding processing table (1) is fixedly connected to a plurality of push racks (14), the top of the welding processing table (1) is provided with a plurality of limit grooves (15), characterized in that: Also includes: A mobile clamping mechanism (2), the mobile clamping mechanism (2) comprising a driving motor (201) fixedly connected to the left side wall of the welding processing table (1), the output end of the driving motor (201) being fixedly connected to an output rotating shaft (202), the end of the output rotating shaft (202) away from the driving motor (201) being fixedly connected to a threaded rod (203), the threaded rod (203) being provided with a plurality of thread grooves, and the sliding plate (13) being rotatably connected to the thread grooves on the threaded rod (203).

2. A high-precision heat-resistant steel pipe welding fixture according to claim 1, characterized in that: The mobile clamping mechanism (2) also includes an adjusting motor (204) fixedly connected to an end of the sliding plate (13) away from the welding processing table (1), the output end of the adjusting motor (204) is fixedly connected to an adjusting shaft (205), the end of the pushing frame (14) away from the sliding plate (13) is fixedly connected to a plurality of supporting frames (206), the supporting frames (206) are slidably connected to the inside of the limiting groove (15), and a steel pipe body (207) is arranged on the adjusting shaft (205).

3. A high-precision heat-resistant steel pipe welding fixture according to claim 2, characterized in that: An auxiliary sliding mechanism (3) is arranged directly above the support frame (206), and the auxiliary sliding mechanism (3) also includes a rotating frame (301) fixedly connected to the top of the support frame (206), the interior of the rotating frame (301) is rotatably connected to a rotating ring (302), the inner wall of the rotating ring (302) is fixedly connected to a plurality of support rods (303), and one end of the support rod (303) away from the rotating ring (302) is rotatably connected to a rolling column (304), and the rolling column (304) is in contact with the steel pipe body (207).

4. The high-precision heat-resistant steel pipe welding fixture according to claim 3 is characterized in that: An outer wall clamping mechanism (4) is provided at one end of the adjusting shaft (205) close to the sliding plate (13), and the outer wall clamping mechanism (4) comprises a fixing ring (401) fixedly connected to one end of the adjusting shaft (205) close to the sliding plate (13); an extrusion bottom plate (402) is slidably connected to one end of the adjusting shaft (205) close to the steel pipe body (207); and an extrusion spring (403) is sleeved on the adjusting shaft (205).

5. The high-precision heat-resistant steel pipe welding fixture according to claim 4 is characterized in that: The outer wall clamping mechanism (4) also includes an outer wall clamping plate (404) slidably connected to the middle part of the support rod (303), the top of the outer wall clamping plate (404) is rotatably connected to a plurality of connecting rods (405), one end of the connecting rod (405) away from the outer wall clamping plate (404) is rotatably connected to the edge of the extrusion bottom plate (402), and one end of the outer wall clamping plate (404) is fixedly connected to a driving rod (406).

6. A high-precision heat-resistant steel pipe welding fixture according to claim 5, characterized in that: An inner wall clamping mechanism (5) is provided at one end of the adjusting shaft (205) away from the sliding plate (13), and the inner wall clamping mechanism (5) comprises a plurality of clamping telescopic rods (501) rotatably connected to one end of the adjusting shaft (205) away from the sliding plate (13), and one end of the clamping telescopic rods (501) away from the adjusting shaft (205) is rotatably connected to an inner wall clamping sheet (502).

7. The high-precision heat-resistant steel pipe welding fixture according to claim 6 is characterized in that: The inner wall clamping mechanism (5) further comprises an extrusion telescopic rod (503) fixedly connected to one end of the adjusting shaft (205) away from the sliding plate (13); one end of the extrusion telescopic rod (503) away from the adjusting shaft (205) is fixedly connected to an extrusion block (504); one end of the extrusion block (504) is rotatably connected to a plurality of clamping telescopic rods (505); one end of the clamping telescopic rod (505) away from the extrusion block (504) is rotatably connected to the inner wall clamping sheet (502).

8. The high-precision heat-resistant steel pipe welding fixture according to claim 7 is characterized in that: The inner wall clamping mechanism (5) further comprises a return spring (506) sleeved on one end of the extrusion telescopic rod (503) away from the adjustment shaft (205); one end of the extrusion block (504) away from the extrusion telescopic rod (503) is provided with a groove (507); and one end of the right extrusion block (504) away from the extrusion telescopic rod (503) is fixedly connected to a docking block (508).

Images