Steel pipe pole welding positioning device

Abstract

The invention belongs to the field of steel pipe welding, and particularly relates to a steel pipe pole welding positioning device which comprises a device base, four sets of rotating cylinders are fixedly connected to the device base, the top ends of the rotating cylinders abut against the bottom end of a steel pipe pole body, a positioning mechanism is arranged in the device base, and the positioning mechanism comprises a handle. The handle is fixedly connected with a rotating rod, the rotating rod is rotatably connected to the interior of the device base, the rotating rod is in threaded connection with a moving block, and the left side and the right side of the moving block are rotatably connected with connecting rods; through the structural design of the positioning mechanism, when a groove is formed in the steel pipe pole body and welding is conducted, the steel pipe pole body can be clamped and fixed, and the situation that the steel pipe pole body moves and needs to be fixed repeatedly is avoided; and clamping and fixing on the steel pipe pole main body can be automatically relieved in the process that the grinding equipment gets close to the steel pipe pole main body, so that the grinding equipment grinds and polishes a welding seam.

Description

Technical Field

[0001] The invention relates to the field of steel pipe welding, in particular to a steel pipe rod welding positioning device. Background Art

[0002] Steel pipe poles usually use steel pipes as the main body of the support pole. During the construction process, in order to meet the needs of different lengths, the steel pipe poles will be welded together. In order to ensure the quality of welding, the steel pipe poles will be fixed by positioning devices.

[0003] According to the patent document CN202011150463.8, a steel pipe welding positioning device is proposed, which relates to the field of steel pipe welding construction technology. It includes an adjusting device and a clamping device. The key technology is that the adjusting device is to install a slide rail on the outer wall of the positioning tube, and a slider is arranged in the groove of the slide rail. The clamping device is to install a base plate on the positioning tube, and a steel pipe channel is arranged on the base plate near one end of the positioning tube. A baffle is installed at one end of the base plate, and a hole is opened on the baffle. A pull rod passes through the hole on the baffle. A splint is installed at one end of the pull rod, and a spring is set between the splint and the baffle on the pull rod. The two ends of the positioning tubes with a clamping device are movably connected to form a steel pipe welding positioning device. The present invention has the beneficial effects that the two positioning tubes are opened and closed by hinges or other structures, and the angle is adjusted by the adjusting device to meet the multi-angle welding requirements, and the welding precision is high. The steel pipe to be welded is fixed by spring expansion and contraction, which is suitable for steel pipes of various shapes and sizes, with fast positioning speed and high construction efficiency.

[0004] However, the welding positioning device in the above technology can only position the steel pipe during welding, and its function is relatively single. The complete welding steps of the steel pipe include opening a groove at the welding position before welding, fixing the steel pipe during welding, and grinding and polishing the weld after welding. Since different tools and equipment are used in different steps, the steel pipe needs to be fixed repeatedly in actual operation, which is troublesome. Therefore, a steel pipe rod welding positioning device is proposed to address the above problems. Summary of the invention

[0005] In order to solve the problem that the welding positioning device in the above technology can only position the steel pipe during welding and has a relatively single function, and the complete welding steps of the steel pipe include opening a groove at the welding position before welding, fixing the steel pipe during welding, and grinding and polishing the weld after welding. Since different tools and equipment are used in different steps, the steel pipe needs to be fixed repeatedly in actual operation, which is quite troublesome. The present invention proposes a steel pipe rod welding positioning device.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: a steel pipe rod welding positioning device described in the present invention comprises a device base, four groups of rotating cylinders are fixedly connected to the device base, the top of the rotating cylinder abuts against the bottom end of the steel pipe rod body, a positioning mechanism is arranged inside the device base, the positioning mechanism comprises a handle, the handle is fixedly connected to a rotating rod, the rotating rod is rotatably connected to the inside of the device base, a moving block is threadedly connected to the rotating rod, the left and right sides of the moving block are rotatably connected to connecting rods, the connecting rod is rotatably connected to a top block, the top block abuts against two groups of bottom plates, the bottom plate is fixedly connected to the bottom end of a supporting column, the top of the supporting column is slidably connected to a supporting plate, The support plate is fixedly connected to a mounting plate on one side close to the inner wall of the steel pipe rod body, and the mounting plate abuts against the inner wall of the steel pipe rod body, and the support column is penetrated by a support rod, and the support rod is fixedly connected to the top of the device base, and a first spring is sleeved on the support rod, and the two sides of the first spring are respectively fixedly connected to the support rod and the support column, and a connecting plate is fixedly connected to the right side of the moving block, and the rear end of the connecting plate is fixedly connected to the bottom end of the grinding device, and the bottom end of the grinding device is slidably connected to two sets of sleeve rods, and the sleeve rods are fixedly connected to the inner wall of the device base, and the top of the moving block is fixedly connected to a column, and a fixing assembly is arranged on the column, and the fixing assembly is used to fix the angle grinder.

[0007] Preferably, a trapezoidal block is fixedly connected to the top end of the support column, and the trapezoidal block is slidably connected inside the trapezoidal groove, and the trapezoidal groove is opened at the bottom end of the support plate.

[0008] Preferably, two groups of protrusions are fixedly connected to the side of the support plate away from the mounting plate, the protrusions are rotatably connected to the connecting rod, the bottom end of the connecting rod is rotatably connected to the connecting block, the connecting block is rotatably connected to a limiting column on the side away from the connecting rod, and the bottom end of the limiting column is close to the inner wall of the steel pipe rod body.

[0009] Preferably, a slot is provided on the support column, the top end of the top block is fixedly connected to a fixing rod, the fixing rod is L-shaped, a fixing block is fixedly connected to the fixing rod, the fixing rod is slidably connected to a guide rod, and the guide rod is fixedly connected to the inner wall of the device base.

[0010] Preferably, the fixing assembly comprises a mounting block, the mounting block is fixedly connected to the top end of the column, the mounting block is rotatably connected to the rotating block, the inner walls of the mounting block and the rotating block are fixedly connected with a gasket, and the gasket is made of rubber material.

[0011] Preferably, the column is slidably connected in a second movable groove, the second movable groove is opened at the top of the device base, two groups of cover plates are fixedly connected to the column, and the cover plates are fitted with the top of the device base.

[0012] Preferably, a baffle is fixedly connected to the front end of the grinding device, the baffle is fitted with the top end of the device base, and two groups of first movable grooves are opened on the device base.

[0013] Preferably, the side of the mounting plate abutting against the inner wall of the steel pipe rod body is designed to be arc-shaped, and the mounting plate is made of rubber material.

[0014] Preferably, a placement groove is provided at the top of the support plate, and a counterweight block is fixedly connected inside the placement groove.

[0015] Preferably, a slide groove is provided on the inner wall of the bottom plate, and a slider is slidably connected inside the slide groove, and the slider is fixedly connected to two sides of the top block.

[0016] The present invention is beneficial in that: 1. The present invention adopts the structural design of the positioning mechanism, and can clamp and fix the steel pipe rod body when the groove is opened and welding is performed, so as to avoid the movement of the steel pipe rod body and the need to repeatedly fix the steel pipe rod body. After welding is completed, the grinding device will automatically release the clamping and fixation on the steel pipe rod body when it is close to the steel pipe rod body, so as to facilitate the grinding device to grind and polish the weld. This solves the problem that the welding positioning device in the prior art can only position the steel pipe during welding and has a relatively single function. The complete welding steps of the steel pipe include opening a groove at the welding position before welding, fixing the steel pipe during welding, and grinding and polishing the weld after welding. Since different tools and equipment are used in different steps, the steel pipe needs to be repeatedly fixed in actual operation, which is a relatively troublesome problem.

[0017] 2. Through the structural design of the limit column of the present invention, after the clamping and fixation of the steel tube rod body is released, the two groups of support plates will approach each other, and the connecting block will move downward through the rotation of the connecting rod. The rotating limit column on the connecting block can contact the inner wall of the steel tube rod body, so as to fix the position of the steel tube rod body during grinding and polishing, and avoid the position of the steel tube rod body from being offset.

[0018] 3. The present invention adopts the structural design of the fixing block. After the clamping and fixing of the steel pipe rod body is released, the two groups of support columns will also be close to each other. At this time, the fixing block can fix the two groups of support columns at the same time to prevent the support columns from moving at this time, thereby ensuring that the position of the limit column will not change, so as to facilitate the fixation of the steel pipe rod body by the limit column. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the structure inside the base of the device of the present invention; Figure 3 It is a schematic diagram of the connection structure of the rotating rod of the present invention; Figure 4 It is a schematic diagram of the connection structure of the support column of the present invention; Figure 5 It is a structural schematic diagram of the support plate of the present invention; Figure 6 It is a schematic diagram of the connection structure of the limit column of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 8 It is a schematic diagram of the connection structure of the bottom end of the grinding device of the present invention; Fig. 9 It is a schematic diagram of the position structure of the rotating drum of the present invention; Fig.10 It is a schematic structural diagram of the column of the present invention.

[0021] In the figure: 1. Device base; 20. Steel pipe rod body; 21. Grinding equipment; 22. Handle; 23. Moving block; 24. Rotating rod; 25. Connecting rod; 26. Sliding block; 27. Top block; 28. Fixed rod; 29. ​​Fixed block; 30. Slide; 31. Bottom plate; 32. Notch; 33. Support column; 34. Mounting plate; 35. First spring; 36. Support rod; 37. Counterweight; 38. Place Groove; 39, limit column; 40, connecting block; 41, connecting rod; 42, protrusion; 43, guide rod; 44, connecting plate; 46, sleeve rod; 47, baffle; 48, first movable groove; 49, second movable groove; 50, rotating cylinder; 51, cover plate; 52, column; 53, gasket; 54, mounting block; 55, rotating block; 56, angle grinder; 57, trapezoidal groove; 58, trapezoidal block; 59, support plate. DETAILED DESCRIPTION

[0022] 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. Embodiment 1

[0023] See also Figure 1 - Fig.10 As shown, a steel pipe rod welding positioning device includes a device base 1, four groups of rotating cylinders 50 are fixedly connected to the device base 1, the top of the rotating cylinder 50 abuts against the bottom end of the steel pipe rod body 20, and a positioning mechanism is arranged inside the device base 1. The positioning mechanism includes a handle 22, the handle 22 is fixedly connected to a rotating rod 24, the rotating rod 24 is rotatably connected to the inside of the device base 1, a moving block 23 is threadedly connected to the rotating rod 24, and the left and right sides of the moving block 23 are rotatably connected with a connecting rod 25, the connecting rod 25 is rotatably connected to a top block 27, the top block 27 abuts against two groups of bottom plates 31, the bottom plate 31 is fixedly connected to the bottom end of a support column 33, and the top of the support column 33 is slidably connected with a support plate 59, and the support plate 59 is close to the steel pipe rod body 2 0A mounting plate 34 is fixedly connected to one side of the inner wall of the steel pipe rod body 20, and the mounting plate 34 abuts against the inner wall of the steel pipe rod body 20. A supporting rod 36 runs through the supporting column 33, and the supporting rod 36 is fixedly connected to the top of the device base 1. A first spring 35 is sleeved on the supporting rod 36, and the two sides of the first spring 35 are respectively fixedly connected to the supporting rod 36 and the supporting column 33. A connecting plate 44 is fixedly connected to the right side of the moving block 23, and the rear end of the connecting plate 44 is fixedly connected to the bottom end of the grinding device 21. The bottom end of the grinding device 21 is slidably connected to two sets of sleeve rods 46, and the sleeve rods 46 are fixedly connected to the inner wall of the device base 1. A column 52 is fixedly connected to the top of the moving block 23, and a fixing assembly is arranged on the column 52, and the fixing assembly is used to fix the angle grinder 56; Through the structural design of the positioning mechanism, when the groove is opened on the steel pipe rod body 20 and welding is performed, the steel pipe rod body 20 can be clamped and fixed to avoid the steel pipe rod body 20 from moving and the need to repeatedly fix the steel pipe rod body 20. After welding is completed, the grinding device 21 will automatically release the clamping and fixing on the steel pipe rod body 20 when it approaches the steel pipe rod body 20, so that the grinding device 21 can grind and polish the weld. When working, the steel pipe rod body 20 is sequentially sleeved on the support plate 59, and the handle 22 is rotated. The handle 22 is fixedly connected to the rotating rod 24 inside the device base 1, and the rotating rod 24 is threadedly connected to the rotating rod 24 when rotating. The moving block 23 on the moving rod 24 will move backward. When the moving block 23 moves, the connecting rods 25 rotatably connected on the left and right sides thereof will push the top block 27 to move. The top block 27 slides in the two sets of bottom plates 31. The two sets of bottom plates 31 abut against the two sides of the top block 27. At this time, the first spring 35 sleeved on the support rod 36 will be in a compressed state. The mounting plate 34 fixed on one side of the support plate 59 will abut against the inner wall of the steel pipe rod body 20 to clamp and fix the steel pipe rod body 20. The bottom end of the column 52 is fixed to the top of the moving block 23 and can move together with the moving block 23. When the moving block 23 moves backward, the angle grinder 56 can contact the steel pipe rod body 20 to facilitate passing through The angle grinder 56 opens a groove on the steel pipe rod body 20, and then the handle 22 is turned in the reverse direction, and the angle grinder 56 can be away from the steel pipe rod body 20. After the moving block 23 is reset, the handle 22 is continued to be turned in the reverse direction, and the moving block 23 will move forward. A connecting plate 44 is fixed to the right side of the moving block 23, and the connecting plate 44 is connected to the bottom end of the grinding device 21. Therefore, the grinding device 21 will move forward until the grinding wheel on the grinding device 21 fits with the weld of the steel pipe rod body 20. Starting the grinding device 21 can grind and polish the weld on the steel pipe rod body 20, and the steel pipe rod body 20 will also rotate under the action of the grinding wheel. When the moving block 23 moves to When moving forward, the connecting rod 25 pulls the top block 27 to move, and the top block 27 will slide out from the two groups of bottom plates 31. Since the two groups of bottom plates 31 are not supported by the top block 27, the support column 33 will slide along the support rod 36 under the push of the first spring 35, and the two groups of support columns 33 will approach each other. When the position of the support column 33 changes, the mounting plate 34 will no longer abut against the inner wall of the steel tube rod body 20, so as to automatically release the clamping and fixation of the steel tube rod body 20 during grinding and polishing. Four groups of rotating cylinders 50 are fixed on the top of the device base 1. The rotating cylinders 50 are used to provide support for the bottom end of the steel tube rod body 20 and ensure the stable rotation of the steel tube rod body 20 during grinding and polishing.

[0024] Furthermore, a trapezoidal block 58 is fixedly connected to the top of the support column 33, and the trapezoidal block 58 is slidably connected inside the trapezoidal groove 57, and the trapezoidal groove 57 is opened at the bottom end of the support plate 59; During operation, a trapezoidal block 58 is fixed to the top of the support column 33, and the trapezoidal block 58 slides inside the trapezoidal groove 57 to facilitate adjustment of the position of the support plate 59 on the support column 33. When the welding of the steel pipe rod main body 20 is completed, the support plate 59 is pushed to both sides to keep the support plate 59 away from the steel pipe rod main body 20, and the steel pipe rod main body 20 can be smoothly removed.

[0025] Furthermore, two groups of protrusions 42 are fixedly connected to the side of the support plate 59 away from the mounting plate 34, the protrusions 42 are rotatably connected to the connecting rod 41, the bottom end of the connecting rod 41 is rotatably connected to the connecting block 40, and the side of the connecting block 40 away from the connecting rod 41 is rotatably connected to the limiting column 39, and the bottom end of the limiting column 39 is close to the inner wall of the steel pipe rod body 20; Through the structural design of the limit column 39, after the clamping and fixing of the steel pipe rod body 20 is released, the two groups of support plates 59 will approach each other, and the connecting block 40 will move downward by rotating the connecting rod 41, and the rotating limit column 39 on the connecting block 40 can contact the inner wall of the steel pipe rod body 20, so as to fix the position of the steel pipe rod body 20 during grinding and polishing, and avoid the position of the steel pipe rod body 20 from being offset. A protrusion 42 is fixed on one side of the support plate 59, and the protrusion 42 is connected to the connecting block 40 through the connecting rod 41. Together, when the two groups of support plates 59 approach each other, the connecting rod 41 will push the connecting block 40 downward, and the limiting column 39 rotatably connected to the connecting block 40 will move downward and contact the inner wall of the steel tube rod body 20. The limiting column 39 will limit the vertical movement of the steel tube rod body 20, and combined with the support of the rotating cylinder 50 on the front and rear sides of the steel tube rod body 20, the steel tube rod body 20 will not easily deviate on the rotating cylinder 50 during grinding and polishing, thereby ensuring the grinding effect of the grinding equipment 21 on the steel tube rod body 20.

[0026] Furthermore, a notch 32 is provided on the support column 33, and a fixing rod 28 is fixedly connected to the top of the top block 27, and the fixing rod 28 is L-shaped, and a fixing block 29 is fixedly connected to the fixing rod 28, and the fixing rod 28 is slidably connected to the guide rod 43, and the guide rod 43 is fixedly connected to the inner wall of the device base 1; Through the structural design of the fixing block 29, after the clamping fixation of the steel pipe rod body 20 is released, the two groups of support columns 33 will also move closer to each other. At this time, the fixing block 29 can fix the two groups of support columns 33 at the same time to prevent the support columns 33 from moving at this time, thereby ensuring that the position of the limit column 39 will not change, so as to facilitate the fixation of the steel pipe rod body 20 by the limit column 39. During operation, when the top block 27 slides out from between the two groups of bottom plates 31, the two groups of support columns 33 will move closer to each other. Since the support columns 33 are provided with notches 32, the fixing rod 28 can be smoothly inserted into the notches 32. When the top block 27 continues to move, the fixing block 29 fixed on the fixing rod 28 will contact the two groups of support columns 33 and fix the two groups of support columns 33. When the position of the support columns 33 is fixed, the position of the limit column 39 and the connecting block 40 will no longer change.

[0027] Furthermore, the fixing assembly includes a mounting block 54, which is fixedly connected to the top of the column 52, and the mounting block 54 is rotatably connected to the rotating block 55. The inner walls of the mounting block 54 and the rotating block 55 are fixedly connected with a gasket 53, and the gasket 53 is made of rubber material; During operation, the rotating block 55 is rotated to place the angle grinder 56 into the mounting block 54, and then the rotating block 55 is rotated. After the mounting block 54 and the rotating block 55 are closed, the angle grinder 56 can be fixed. Gaskets 53 are fixed on the inner walls of the mounting block 54 and the rotating block 55. The gaskets 53 can improve the fixing effect of the mounting block 54 and the rotating block 55 on the angle grinder 56. When using the angle grinder 56 to open a groove on the steel pipe rod body 20, press the rotating block 55 downward to avoid changes in the position of the angle grinder 56.

[0028] Furthermore, the column 52 is slidably connected in the second movable groove 49, and the second movable groove 49 is provided at the top of the device base 1. Two sets of cover plates 51 are fixedly connected to the column 52, and the cover plates 51 are fitted with the top of the device base 1. During operation, the cover plate 51 is fixed at the bottom of the column 52 and fits with the top of the device base 1. During welding, the column 52 can block the second movable groove 49 to prevent welding slag from entering the inside of the device base 1 through the second movable groove 49.

[0029] Furthermore, a baffle 47 is fixedly connected to the front end of the grinding device 21, and the baffle 47 is in contact with the top of the device base 1, and two sets of first movable grooves 48 are provided on the device base 1; During operation, the baffle 47 is fixed to the front end of the grinding device 21 , and can shield the first movable groove 48 during grinding, thereby preventing welding slag or metal debris from entering the inside of the device base 1 through the first movable groove 48 during grinding.

[0030] Furthermore, the side where the mounting plate 34 abuts against the inner wall of the steel pipe rod body 20 is designed to be arc-shaped, and the mounting plate 34 is made of rubber material; During operation, the mounting plate 34 is designed to be arc-shaped so as to fit together with the inner wall of the steel tube rod body 20 , while increasing the contact area with the inner wall of the steel tube rod body 20 to improve the clamping effect of the steel tube rod body 20 . Embodiment 2

[0031] See also Figure 3 and Figure 4 As shown, in Comparative Example 1 as another embodiment of the present invention, a placement groove 38 is provided at the top of the support plate 59, and a counterweight block 37 is fixedly connected inside the placement groove 38; During operation, the counterweight block 37 is used to adjust the position of the center of gravity of the support plate 59 to ensure that the center of gravity of the support plate 59 is directly above the support column 33, so that when the support column 33 supports the support plate 59, the force on the top of the support column 33 can be more balanced.

[0032] The inner wall of the bottom plate 31 is provided with a slide groove 30, and the inside of the slide groove 30 is slidably connected with a slider 26, and the slider 26 is fixedly connected to both sides of the top block 27; During operation, when the top block 27 slides between the two groups of bottom plates 31, the slider 26 fixed on the top block 27 will slide into the slide groove 30. Through the contact between the slider 26 and the inner wall of the slide groove 30, the movement of the bottom plate 31 in the vertical direction is restricted to reduce the shaking of the bottom plate 31.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A steel pipe rod welding positioning device, comprising a device base (1), four sets of rotating cylinders (50) are fixedly connected to the device base (1), the top ends of the rotating cylinders (50) abut against the bottom ends of the steel pipe rod bodies (20), characterized in that: A positioning mechanism is provided inside the device base (1), the positioning mechanism comprising a handle (22), the handle (22) being fixedly connected to a rotating rod (24), the rotating rod (24) being rotatably connected to the inside of the device base (1), a moving block (23) being threadedly connected to the rotating rod (24), the left and right sides of the moving block (23) being rotatably connected to connecting rods (25), the connecting rods (25) being rotatably connected to a top block (27), the top block (27) being in contact with two groups of bottom plates (31), the bottom plates (31) being fixedly connected to the bottom ends of the support columns (33), the top ends of the support columns (33) being slidably connected to a supporting plate (59), the side of the supporting plate (59) close to the inner wall of the steel pipe rod body (20) being fixedly connected to a mounting plate (34), the mounting plate (34) being rotatably connected to the steel pipe rod body (20) ), a support rod (36) passes through the support column (33), the support rod (36) is fixedly connected to the top of the device base (1), a first spring (35) is sleeved on the support rod (36), the two sides of the first spring (35) are respectively fixedly connected to the support rod (36) and the support column (33), a connecting plate (44) is fixedly connected to the right side of the moving block (23), the rear end of the connecting plate (44) is fixedly connected to the bottom end of the grinding device (21), the bottom end of the grinding device (21) is slidably connected to two sets of sleeve rods (46), the sleeve rods (46) are fixedly connected to the inner wall of the device base (1), the top of the moving block (23) is fixedly connected to a column (52), the column (52) is provided with a fixing assembly, and the fixing assembly is used to fix the angle grinder (56).

2. A steel pipe rod welding positioning device according to claim 1, characterized in that: A trapezoidal block (58) is fixedly connected to the top end of the support column (33), and the trapezoidal block (58) is slidably connected inside a trapezoidal groove (57). The trapezoidal groove (57) is provided at the bottom end of the support plate (59).

3. A steel pipe rod welding positioning device according to claim 2, characterized in that: Two groups of protrusions (42) are fixedly connected to a side of the support plate (59) away from the mounting plate (34); the protrusions (42) are rotatably connected to the connecting rod (41); the bottom end of the connecting rod (41) is rotatably connected to the connecting block (40); the side of the connecting block (40) away from the connecting rod (41) is rotatably connected to a limiting column (39); the bottom end of the limiting column (39) is close to the inner wall of the steel pipe rod body (20).

4. A steel pipe rod welding positioning device according to claim 1, characterized in that: The support column (33) is provided with a notch (32); the top end of the top block (27) is fixedly connected to a fixing rod (28); the fixing rod (28) is L-shaped; a fixing block (29) is fixedly connected to the fixing rod (28); the fixing rod (28) is slidably connected to a guide rod (43); and the guide rod (43) is fixedly connected to the inner wall of the device base (1).

5. A steel pipe rod welding positioning device according to claim 1, characterized in that: The fixing assembly comprises a mounting block (54), the mounting block (54) being fixedly connected to the top end of the column (52), the mounting block (54) being rotatably connected to the rotating block (55), the inner walls of the mounting block (54) and the rotating block (55) being fixedly connected with a gasket (53), the gasket (53) being made of rubber material.

6. A steel pipe rod welding positioning device according to claim 5, characterized in that: The column (52) is slidably connected in the second movable groove (49), the second movable groove (49) is opened at the top of the device base (1), and two groups of cover plates (51) are fixedly connected to the column (52), and the cover plates (51) are in contact with the top of the device base (1).

7. A steel pipe rod welding positioning device according to claim 1, characterized in that: A baffle (47) is fixedly connected to the front end of the grinding device (21), and the baffle (47) is fitted with the top end of the device base (1). Two groups of first movable grooves (48) are provided on the device base (1).

8. A steel pipe rod welding positioning device according to claim 7, characterized in that: The side of the mounting plate (34) abutting against the inner wall of the steel tube rod body (20) is designed to be arc-shaped, and the mounting plate (34) is made of rubber material.

9. A steel pipe rod welding positioning device according to claim 2, characterized in that: A placement groove (38) is provided at the top end of the support plate (59), and a counterweight block (37) is fixedly connected inside the placement groove (38).

10. A steel pipe rod welding positioning device according to claim 1, characterized in that: The inner wall of the bottom plate (31) is provided with a sliding groove (30), the interior of the sliding groove (30) is slidably connected to a sliding block (26), and the sliding block (26) is fixedly connected to two sides of the top block (27).

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