Straight welded pipe welding seam grinding device

Abstract

The utility model discloses a straight welded pipe welding seam grinding device which comprises a base and an L-shaped frame connected to the base through a liquid oxygen cylinder, a grinding mechanism is arranged on the L-shaped frame and comprises a servo motor installed at the upper end of a transverse rod of the L-shaped frame, and the lower end of the servo motor is connected with a driving shaft movably penetrating through the L-shaped frame. A large belt pulley and a first connecting rod are sequentially and fixedly connected to the lower end of the driving shaft, a second connecting rod is arranged at the other end of the first connecting rod, a first rotating shaft is rotationally connected between the first connecting rod and the second connecting rod through a bearing, and two first small belt pulleys are sequentially and fixedly connected to the upper end of the first rotating shaft; the inner grinding roller and the outer grinding roller synchronously rotate to synchronously weld inner and outer welding seams of the longitudinal welded pipe, so that the grinding efficiency of the welding seams of the longitudinal welded pipe is improved; and the second connecting rod hinged to the first connecting rod is adopted, welding seam grinding of longitudinal welded pipes with different thicknesses is met, and flexibility and practicability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of straight seam welded pipe processing equipment, in particular to a straight seam welded pipe weld grinding device. Background Art

[0002] At present, the grinding of the inner and outer welds of straight seam welded pipes is generally performed by a grinder for distributed operation. The weld grinding efficiency is low, time-consuming and labor-intensive, and there is a lack of synchronous grinding of the inner and outer welds. Utility Model Content

[0003] The utility model aims to provide a straight seam welded pipe weld grinding device to solve the technical problem of low distributed operation efficiency of existing grinding equipment.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a straight seam welded pipe weld grinding device, comprising a base and an L-shaped frame connected to the base through a liquid oxygen cylinder, the L-shaped frame is provided with a grinding mechanism, the grinding mechanism comprises a servo motor installed at the upper end of the L-shaped frame crossbar, the lower end of the servo motor is connected to a driving shaft that movably passes through the L-shaped frame, and the lower end of the driving shaft is fixedly connected to a large belt pulley and a first connecting rod in sequence, the other end of the first connecting rod is provided with a second connecting rod, and a first rotating shaft is rotatably connected between the first connecting rod and the second connecting rod through a bearing, the upper end of the first rotating shaft is fixedly connected to two first small belt pulleys in sequence, and one of the first small belt pulleys is connected to the large belt pulley through a belt, and the lower end of the first rotating shaft is fixedly connected to an inner grinding roller;

[0005] The other end of the second connecting rod is connected to the second rotating shaft through a bearing, and the upper end of the second rotating shaft is fixedly connected to a second small belt pulley, the second small belt pulley is connected to one of the first small belt pulleys through a belt, and the lower end of the second rotating shaft is fixedly connected to an external grinding roller.

[0006] As a preferred solution of the present utility model, a tension spring is connected between the side walls of the first connecting rod and the second connecting rod.

[0007] As a preferred solution of the utility model, the diameters of the first small belt pulley and the second small belt pulley are the same, and the diameter of the large belt pulley is larger than the diameter of the first small belt pulley.

[0008] As a preferred embodiment of the utility model, a wedge-shaped groove is provided on the base, and the wedge-shaped groove is provided with two opposing wedge-shaped blocks, and a bidirectional screw is threadedly connected between the wedge-shaped blocks, and one end of the bidirectional screw is rotatably connected to the side wall of the wedge-shaped groove.

[0009] As a further preferred solution of the utility model, a clamping block is provided at one end of the wedge-shaped block.

[0010] Compared with the prior art, the utility model discloses a straight seam welded pipe weld grinding device which adopts the synchronous rotation of the inner grinding roller and the outer grinding roller to synchronously weld the inner and outer welds of the straight seam welded pipe, thereby improving the efficiency of the straight seam welded pipe weld grinding process; and adopts a second connecting rod hinged to the first connecting rod to meet the weld grinding requirements of straight seam welded pipes of different thicknesses, thereby having flexibility and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only examples of the embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0013] Figure 2 This is a schematic diagram of the grinding mechanism structure in the embodiment of the utility model;

[0014] Figure 3 It is a schematic diagram of the disassembled structure of the grinding mechanism in the embodiment of the utility model.

[0015] Figure numerals: 1. base; 11. L-shaped frame; 12. wedge-shaped groove; 13. wedge-shaped block; 14. bidirectional screw; 2. grinding mechanism; 21. servo motor; 211. driving shaft; 2111. large belt pulley; 22. first connecting rod; 23. second connecting rod; 24. first rotating shaft; 241. first small belt pulley; 242. inner grinding roller; 25. second rotating shaft; 251. second small belt pulley; 252. outer grinding roller; 26. belt; 27. tension spring. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0017] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the embodiments of the present invention.

[0018] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal connection of two components; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0019] See also Figure 1-3 As shown, an embodiment of the utility model is a straight seam welded pipe weld grinding device, comprising a base 1 and an L-shaped frame 11 connected to the base 1 through a liquid oxygen cylinder, the L-shaped frame 11 is provided with a grinding mechanism 2, the grinding mechanism 2 comprises a servo motor 21 installed at the upper end of a cross bar of the L-shaped frame 11, the lower end of the servo motor 21 is connected with a driving shaft 211 that movably passes through the L-shaped frame 11, and the lower end of the driving shaft 211 is fixedly connected with a large belt pulley 2111 and a first connecting rod 22 in sequence, a second connecting rod 23 is provided at the other end of the first connecting rod 22, and a first rotating shaft 24 is rotatably connected between the first connecting rod 22 and the second connecting rod 23 through a bearing, the upper end of the first rotating shaft 24 is fixedly connected with two first small belt pulleys 241 in sequence, and one of the first small belt pulleys 241 is connected to the large belt pulley 2111 through a belt 26, and the lower end of the first rotating shaft 24 is fixedly connected with an inner grinding roller 242.

[0020] The other end of the second connecting rod 23 is connected to the second rotating shaft 25 through a bearing, and the upper end of the second rotating shaft 25 is fixedly connected to a second small belt pulley 251, the second small belt pulley 251 is connected to one of the first small belt pulleys 241 through a belt 26, and the lower end of the second rotating shaft 25 is fixedly connected to an external grinding roller 252.

[0021] A tension spring 27 is connected between the side walls of the first connecting rod 22 and the second connecting rod 23. The second connecting rod 23 is rotated to adjust the position to meet the weld grinding of straight seam welded pipes of different thicknesses, and the outer grinding roller 252 is pressed against the outer side wall of the straight seam welded pipe under the tension of the tension spring 27, so that the outer grinding roller 252 rotates to grind the weld.

[0022] The first small belt pulley 241 and the second small belt pulley 251 have the same diameter, and the diameter of the large belt pulley 2111 is greater than the diameter of the first small belt pulley 241 .

[0023] The rotation of the large belt pulley 2111 drives the first small belt pulley 241, thereby increasing the transmission ratio and accelerating the rotation of the first small belt pulley 241 and the second small belt pulley 251, so that the rotation of the active shaft 211 drives the first connecting rod 22 and the second connecting rod 23 to rotate, and the inner grinding roller 242 and the outer grinding roller 252 rotate quickly, thereby realizing the synchronous grinding of the inner and outer welds of the straight seam welded pipe.

[0024] The base 1 is provided with a wedge-shaped groove 12, and the wedge-shaped groove 12 is provided with two wedge-shaped blocks 13 supporting each other, and a bidirectional screw rod 14 is threadedly connected between the wedge-shaped blocks 13, and one end of the bidirectional screw rod 14 is rotatably connected to the side wall of the wedge-shaped groove 12, and a clamping block is provided at one end of the wedge-shaped blocks 13. The bidirectional screw rod 14 is rotated to drive the wedge-shaped blocks 13 to move toward each other, and then the clamping block on the wedge-shaped blocks 13 is clamped and positioned.

[0025] The straight seam welded pipe is placed between the two wedge blocks 13 by lifting the liquid oxygen cylinder, and is located at the lower end of the driving shaft 211. The straight seam welded pipe is placed coaxially with the driving shaft 211. The wedge blocks 13 are driven to clamp and position the straight seam welded pipe by rotating the bidirectional screw 14. Then the second connecting rod 23 is pulled to control the liquid oxygen cylinder to descend and the inner grinding roller 242 to be tangent to the inner wall of the straight seam welded pipe. The second connecting rod 23 is released. Under the tension of the tension spring 27, the second connecting rod 23 rotates around the first rotating shaft 24, and the outer grinding roller 252 is tangent to the outer wall of the straight seam welded pipe, so as to meet the needs of straight seam welded pipes of different thicknesses.

[0026] The servo motor 21 is started to drive the driving shaft 211 and the large belt pulley 2111 to rotate, and then the first connecting rod 22 and the second connecting rod 23 are driven to rotate, and the first connecting rod 22 and the second connecting rod 23 are always tangent to the inner and outer walls of the straight seam welded pipe, and the rotation of the large belt pulley 2111 drives the first small belt pulley 241 to rotate through the belt 26, and increases the transmission ratio, increases the rotation speed of the first small belt pulley 241 and the inner grinding roller 242, and grinds the inner wall weld by the inner grinding roller 242; and the rotation of the first small belt pulley 241 synchronously drives the rotation of the second small belt pulley 251, as well as the second rotating shaft 25 and the outer grinding roller 252, so that the outer grinding roller 252 grinds the outer wall weld, thereby realizing the synchronous grinding of the inner and outer welds of the straight seam welded pipe, and ensuring the efficiency of the weld grinding process.

[0027] The above shows and describes the basic principles of the present invention. The above are only preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only intended to illustrate the principles of the present invention. Without departing from the scope of the present invention, any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A straight seam welded pipe weld grinding device, comprising a base (1) and an L-shaped frame (11) connected to the base (1) via a liquid oxygen cylinder, characterized in that: The L-shaped frame (11) is provided with a grinding mechanism (2), the grinding mechanism (2) comprising a servo motor (21) mounted on the upper end of a crossbar of the L-shaped frame (11), the lower end of the servo motor (21) being connected to a driving shaft (211) that movably passes through the L-shaped frame (11), and the lower end of the driving shaft (211) being fixedly connected in sequence to a large belt pulley (2111) and a first connecting rod (22), the other end of the first connecting rod (22) being provided with a second connecting rod (23), and a first rotating shaft (24) being rotatably connected between the first connecting rod (22) and the second connecting rod (23) via a bearing, the upper end of the first rotating shaft (24) being fixedly connected in sequence to two first small belt pulleys (241), and one of the first small belt pulleys (241) being connected to the large belt pulley (2111) via a belt (26), and the lower end of the first rotating shaft (24) being fixedly connected to an inner grinding roller (242); The other end of the second connecting rod (23) is connected to a second rotating shaft (25) via a bearing, and a second small belt pulley (251) is fixedly connected to the upper end of the second rotating shaft (25), the second small belt pulley (251) is connected to one of the first small belt pulleys (241) via a belt (26), and an outer grinding roller (252) is fixedly connected to the lower end of the second rotating shaft (25).

2. A straight seam welded pipe weld grinding device according to claim 1, characterized in that: A tension spring (27) is connected between the side walls of the first connecting rod (22) and the second connecting rod (23).

3. The straight seam welded pipe weld grinding device according to claim 1, characterized in that: The first small belt pulley (241) and the second small belt pulley (251) have the same diameter, and the diameter of the large belt pulley (2111) is greater than the diameter of the first small belt pulley (241).

4. The straight seam welded pipe weld grinding device according to claim 1, characterized in that: The base (1) is provided with a wedge-shaped groove (12), and the wedge-shaped groove (12) is provided with two opposing wedge-shaped blocks (13), and a bidirectional screw rod (14) is threadedly connected between the wedge-shaped blocks (13), and one end of the bidirectional screw rod (14) is rotatably connected to the side wall of the wedge-shaped groove (12).

5. The straight seam welded pipe weld grinding device according to claim 4, characterized in that: A clamping block is provided at one end of each wedge-shaped block (13).

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