Steel pipe grinding swing positioning tool

Abstract

The steel pipe grinding swing positioning tool is characterized by comprising a clamp for fixing on the steel pipe, a handle connected to the clamp, an upper limit component, and a lower limit component. The handle swings up and down around the central axis of the steel pipe after the clamp clamps the steel pipe, and the upper limit component and the lower limit component are respectively arranged on the upper swing path and the lower swing path of the handle. The present invention can more accurately control the rotation angle of the steel pipe when grinding the steel pipe.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe manufacturing, in particular to a steel pipe grinding and swing positioning tool. Background Art

[0002] The pipeline industry, especially cladding pipe fittings, is developing rapidly, and the market demand for laying oil and gas pipelines across the country is increasing. In marine engineering, oil shale gas mining, and in situations where acid chloride catalysts are used, the corrosion resistance, wear resistance, tensile properties, and high temperature peeling resistance of pipe fittings are very high, and it is necessary to ensure that the cladding has good performance. To this end, welding quality inspection will be carried out, and after the welding defect location is found, the defective part will be polished, and the cladding layer within a certain range around it will be dug out, and then repair welding will be carried out on the welding equipment.

[0003] The traditional grinding method is to grind with a grinding head such as a grinding wheel inserted into the pipe in a straight line, and the steel pipe is rotated back and forth repeatedly, so that the inner wall near the defect of the steel pipe can rotate relative to the grinding head, so as to grind a certain circumferential area near the defect of the steel pipe. However, it is difficult for workers to accurately control the rotation angle of the steel pipe, which will cause the problem of grinding over-progress.

[0004] Therefore, a positioning tool is needed that can more accurately control the rotation angle of the steel pipe to complete auxiliary grinding during steel pipe grinding. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a steel pipe grinding and swing positioning tool, which can more accurately control the rotation angle of the steel pipe during the steel pipe grinding.

[0006] The steel pipe grinding and swing positioning tool is characterized in that it includes a clamp for fixing on the steel pipe, a handle connected to the clamp, an upper limit component, and a lower limit component. The handle swings up and down around the central axis of the steel pipe after the clamp clamps the steel pipe, and the upper limit component and the lower limit component are respectively arranged on the upper swing path and the lower swing path of the handle.

[0007] Preferably, the swing angle of the handle is -30°~30°.

[0008] Preferably, the vertical height of the upper limit component is 0.8m-1.2m.

[0009] Preferably, it further comprises a column arranged on the side of the handle, and a storage groove opening toward the handle is arranged on the side of the column;

[0010] The handle comprises a connecting section 1 connected to the hoop, a connecting section 2 which can be received in the receiving groove, and a movable connecting structure connecting the connecting section 1 and the connecting section 2; the movable connecting structure comprises a connecting end seat provided at one end of the connecting section, and a connecting head movably connected to the connecting end seat, and the movable connecting structure enables the connecting section 2 to be received in the receiving groove after the hoop clamps the steel pipe;

[0011] The receiving groove and the second connecting section are provided with a pair of magnets that attract each other.

[0012] Preferably, the connecting head (24) is slidably connected to the connecting end seat (23), and the sliding direction of the connecting head (24) is a linear direction parallel to the central axis of the steel pipe.

[0013] Preferably, a slide rod passing through the connector (24) is provided on the connection end seat (23), the slide rod (25) extends in a straight line direction parallel to the central axis of the steel pipe, and the connection end seat (23) is also provided with slide rod mounting plates (26) located on both sides of the slide rod (25).

[0014] Preferably, a sliding slot (27) is provided in the connection end seat (23), the sliding slot (27) extends in a straight line direction parallel to the central axis of the steel pipe, and an opening is provided on the end surface of the connection end seat (23), the opening being connected to the sliding slot (27). Preferably, the connector is rotatably connected to the connection end seat.

[0015] Preferably, a limiting portion for limiting the rotation angle of the connector is provided on the connecting end seat.

[0016] In summary, the present invention has the following beneficial effects:

[0017] 1: The present invention can more accurately control the rotation angle of the steel pipe when the steel pipe is being ground.

[0018] 2. According to the present invention, when the clamp is fixed to the large-diameter steel pipe, it can be operated by a single person and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the installation diagram of the swing positioning tooling for steel pipe grinding;

[0020] Figure 2 This is an indication of the handle being stored in the storage slot. Figure 1 ;

[0021] Figure 3 for Figure 2 Schematic diagram of the middle handle after it is pulled out from the storage slot;

[0022] Figure 4 It is the matching diagram of the connector and the connection end seat;

[0023] Figure 5 This is an indication of the handle being stored in the storage slot. Figure 2 ;

[0024] Figure 6 for Figure 5 Schematic diagram of the middle handle after it is rotated out of the storage slot;

[0025] Figure 7 for Figure 5 Schematic diagram of the connection terminal block. DETAILED DESCRIPTION

[0026] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

[0027] Example 1: See attached Figure 1 As shown, the steel pipe grinding swing positioning tool is used to more accurately control the rotation angle of the steel pipe to cooperate with the auxiliary grinding when grinding the steel pipe, wherein the steel pipe 00 is mounted on a plurality of roller groups 01 arranged in a straight line, the central axis of the steel pipe 00 is horizontal, and the steel pipe 00 can be allowed to reciprocate in both directions. It includes a clamp 1, a handle 2 connected to the clamp 1, an upper limit component 3, and a lower limit component 4. The clamp 1 is used to be fixed on the outer circumference of the steel pipe. After the clamp 1 clamps the steel pipe, a certain force is applied to the handle 2 to make the steel pipe rotate forward and reversely. At this time, the handle 2 swings up and down around the central axis of the steel pipe. The upper limit component 3 and the lower limit component 4 can be rods, bolts, etc. The upper limit component 3 and the lower limit component 4 are respectively arranged on the upper swing path and the lower swing path of the handle 2 to limit the upper swing angle and the lower swing angle of the handle 2, thereby realizing the control of the steel pipe angle.

[0028] The swing angle of the handle 2 is -30°~30°, and the vertical height of the upper limit component 3 is 0.8m-1.2m, which is a reasonable height and is convenient for controlling the handle 2.

[0029] The upper limit component 3 and the lower limit component 4 can be arranged on the wall. In this embodiment, the steel pipe grinding and swing positioning tooling also includes a column 5 arranged on the side of the handle 2, and the upper limit component 3 and the lower limit component 4 are arranged on the column 5.

[0030] The clamp is formed by connecting two half clamp bodies through bolt fasteners. When the clamp is fixed to the steel pipe, the two half clamp bodies are generally directly attached to the surface of the steel pipe, and one hand maintains the two half clamp bodies so that the two half clamp bodies remain attached to the surface of the steel pipe, and the other hand passes the bolt through the two half clamp bodies to connect the two half clamp bodies. Considering the large-diameter steel pipe, such as the steel pipe with a diameter of more than 60cm, the size of the clamp 1 matching it is also quite large and the weight is also large. In this case, it is very difficult for a single person to connect the two half clamp bodies to each other. , because it is difficult to hold two large-sized and heavy half-hoops with one hand, it is also very inconvenient to remove the hoop after the steel pipe is ground. In order to facilitate single-person operation, the side of the column 5 is further provided with a storage groove 51 with an opening facing the handle 2, and the handle 2 includes a connecting section 1 21 connected to the hoop 1, a connecting section 2 22 that can be stored in the storage groove 51, and an active connection structure connecting the connecting section 1 21 and the connecting section 2 22. When the connecting section 22 is stored in the storage groove 51 and the storage process ensures that the half-hoop 1 connected to the connecting section 1 21 is After the hoop body just fits onto the outer surface of the steel pipe facing the column 5, the entire handle 2 is equivalent to being temporarily installed on the column 5. This has the advantage that when the hoop 1 needs to be fixed to the steel pipe, the half hoop body connected to the middle and connecting section 21 of the hoop does not require the worker to spare one hand to maintain it. The worker's two hands can be used to connect the other half hoop body to the half hoop body connected to the middle and connecting section 21 by bolts. It is very convenient for one person to operate, reducing labor costs. The movable connection structure includes a connection end seat 23 arranged at the end of the connecting section 21, The connecting head 24 movably connected to the connecting end seat 23 has a movable connection structure that provides a prerequisite for the connecting section 22 to be separated from the storage groove 51 after the clamp is fixed to the steel pipe. The separation of the connecting section 22 from the storage groove 51 is a prerequisite for the handle 2 to swing up and down around the central axis of the steel pipe, preventing the storage groove 51 from interfering with the rotation of the handle 2. Specifically, one of the ways to achieve the movable connection between the connecting head 24 and the connecting end seat 23 is that the connecting head 24 is slidably connected to the connecting end seat 23, and the sliding direction of the connecting head 24 is a straight line direction parallel to the central axis of the steel pipe. The sliding connection can be seen in Figure 2-3 As shown, the connecting end seat 23 is provided with a slide bar 25 passing through the connecting head 24. The slide bar 25 extends in a straight line direction parallel to the central axis of the steel pipe. The cross section of the slide bar 25 is polygonal, which can be a triangle, a quadrilateral, a pentagon, etc. The connecting head 24 is provided with a matching hole for the slide bar 25 to pass through. The matching hole and the slide bar 25 have the same cross-sectional shape, both of which are polygonal. This cross-sectional shape allows the force applied to the connecting section 1 (21) by the hand to be effectively transmitted to the clamp (1) when the handle rotates the steel pipe, so that the steel pipe rotates. The connecting end seat 23 is also provided with slide bar mounting plates 26 located on both sides of the slide bar 25. The slide bar 25 is mounted on the slide bar mounting plates 26. You can also refer to Figure 4 As shown, a sliding slot 27 is provided in the connecting end seat 23, and the sliding slot 27 extends in a straight line direction parallel to the central axis of the steel pipe. An opening is provided on the end face of the connecting end seat 23, and the opening is connected to the sliding slot 27. Limiting blocks 28 are provided on both sides of the sliding slot 27, and the limiting blocks 28 limit the connecting head 24 in the sliding slot 27. The storage groove 51 and the connecting section 2 22 are provided with a pair of magnets 6 that attract each other, and the central axis of the hoop 1 coincides with the central axis of the steel pipe when the pair of magnets 6 attract each other. The purpose of providing the hoop is to improve the storage stability of the connecting section 2 2 when the connecting section 22 is stored in the storage groove 51, to prevent the handle 2 from falling off the storage groove 51, and to achieve the storage stability by the magnetic attraction of the magnet 6, which is direct and convenient. The central axis of the hoop 1 coincides with the central axis of the steel pipe when the pair of magnets 6 attract each other, which can ensure that the half hoop body connected to the connecting section 1 21 in the hoop 1 is just attached to the outer surface of the steel pipe facing the column 5 on the side after the connecting section 22 is stored in the storage groove 51.

[0031] In actual operation: when the clamp 1 needs to be fixed to the steel pipe, first, the connecting section 22 is stored in the storage groove 51, and is kept in the storage groove 51 under the interaction of a pair of magnets 6, and the rest of the handle 2 is located outside the storage groove 51. The half clamp body connected to the connecting section 1 21 in the clamp is suspended in the air by relying on the matching relationship between the handle and the column. At this time, it is only necessary to connect the other half clamp body to the aforementioned half clamp body suspended in the air by bolts. It is very convenient for one person to operate, reducing labor costs. When it is necessary to turn the handle 2 to reverse the steel pipe, the connecting section 22 in the storage groove 51 is pulled out, and then the handle 2 is turned, which is convenient to use. When the grinding is completed and the clamp 1 needs to be disassembled, the handle 2 is turned to align the connecting section 22 with the receiving groove 51, and the connecting section 22 is pushed into the receiving groove 51. The connecting section 22 is retained in the receiving groove 51 under the interaction of a pair of magnets 6. At this time, the half clamp body that is not connected to the connecting section 1 21 is first disassembled, and the half clamp body connected to the connecting section 1 21 is suspended in the air relying on the matching relationship between the handle and the column. Then the entire handle is taken out, and a force greater than the magnetic attraction of the magnet 6 is applied when taking it out. It is convenient for one person to operate.

[0032] Another way to realize the movable connection between the connector 24 and the connector end seat 23 is as follows: Figure 5-7 As shown, the connector 24 is rotatably connected to the connector end seat 23. Specifically, two shaft mounting portions 231 are provided on the connector end seat 23. A shaft 232 is provided on the two shaft mounting portions 231. The shaft 232 passes through the connector 24. A limiting portion 29 for limiting the rotation angle of the connector 24 is provided on the connector end seat 23.

[0033] When the clamp 1 needs to be fixed to the steel pipe, the second connection section 22 is received in the receiving groove 51 and is retained in the receiving groove 51 under the interaction of a pair of magnets 6, while the rest of the handle 2 is located outside the receiving groove 51. The half clamp body connected to the connection section 1 21 in the clamp is suspended in the air by relying on the matching relationship between the handle and the column. At this time, only the other half clamp body needs to be connected to the aforementioned half clamp body suspended in the air by bolts, which is convenient for single-person operation and reduces labor costs. When the handle 2 needs to be turned to reverse the steel pipe, the second connection section 22 in the receiving groove 51 is rotated outside the receiving groove 51, and then the handle 2 is turned, which is convenient to use. When the grinding is completed and the clamp 1 needs to be disassembled, the handle 2 is turned to align the connecting section 22 with the receiving groove 51, and the connecting section 22 is turned into the receiving groove 51. The connecting section 22 is retained in the receiving groove 51 under the interaction of a pair of magnets 6. At this time, the half clamp body that is not connected to the connecting section 1 21 is first disassembled, and the half clamp body connected to the connecting section 1 21 is suspended in the air by relying on the matching relationship between the handle and the column. Then the whole handle is taken out. When taking it out, a force greater than the magnetic attraction of the magnet 6 is applied. It is convenient for one person to operate.

[0034] The above-described embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. The steel pipe grinding swing positioning tool is characterized by: It comprises a clamp (1) for fixing on a steel pipe, a handle (2) connected to the clamp (1), an upper limit component (3), and a lower limit component (4); the handle (2) swings up and down around the central axis of the steel pipe after the clamp (1) clamps the steel pipe, and the upper limit component (3) and the lower limit component (4) are respectively arranged on the upper swing path and the lower swing path of the handle (2); The swing angle of the handle (2) is -30° to 30°; It also comprises a column (5) arranged on the side of the handle (2), and a storage groove (51) with an opening facing the handle (2) is arranged on the side of the column (5); The handle (2) comprises a connecting section 1 (21) connected to the clamp (1), a connecting section 2 (22) which can be received in the receiving groove (51), and a movable connecting structure connecting the connecting section 1 (21) and the connecting section 2 (22); the movable connecting structure comprises a connecting end seat (23) arranged at the end of the connecting section 1 (21), and a connecting head (24) movably connected to the connecting end seat (23); the movable connecting structure enables the connecting section 2 (22) to be received in the receiving groove (51) after the clamp (1) clamps the steel pipe; The storage groove (51) and the second connecting section (22) are provided with a pair of magnets (6) that attract each other.

2. The steel pipe grinding swing positioning tool according to claim 1 is characterized in that: The upper limit component (3) has a vertical height of 0.8 m to 1.2 m.

3. The steel pipe grinding swing positioning tool according to claim 1, characterized in that: The connecting head (24) is slidably connected to the connecting end seat (23), and the sliding direction of the connecting head (24) is a linear direction parallel to the central axis of the steel pipe.

4. The steel pipe grinding swing positioning tool according to claim 3 is characterized in that: The connecting end seat (23) is provided with a slide bar passing through the connecting head (24); the slide bar (25) extends in a straight line direction parallel to the central axis of the steel pipe; the cross section of the slide bar (25) is polygonal; the connecting end seat (23) is also provided with slide bar mounting plates (26) located on both sides of the slide bar (25).

5. The steel pipe grinding swing positioning tool according to claim 3 is characterized in that: The connection end seat (23) is provided with a sliding slot (27), which extends in a straight line direction parallel to the central axis of the steel pipe. An opening is provided on the end surface of the connection end seat (23), which is in communication with the sliding slot (27).

6. The steel pipe grinding swing positioning tool according to claim 1, characterized in that: The connecting head (24) is rotatably connected to the connecting end seat (23).

7. The steel pipe grinding swing positioning tool according to claim 6, characterized in that: The connection end seat (23) is provided with a limiting portion (29) for limiting the rotation angle of the connection head (24).

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