Tightness adjusting mechanism of high-frequency longitudinal welded pipe unit

Abstract

The utility model relates to the technical field of high-frequency longitudinal welded pipe units, in particular to a tightness adjusting mechanism of a high-frequency longitudinal welded pipe unit, which comprises a conveying component of the high-frequency longitudinal welded pipe unit, a fastening mechanism is arranged at one end of the conveying component and comprises a reinforcing component, and the reinforcing component comprises two hollow sliding blocks. And through grooves are symmetrically formed in the outer side surfaces of the hollow sliding blocks, ejection blocks are symmetrically and slidably connected into the two through grooves, rotating rods movably penetrate through the two hollow sliding blocks in a penetrating mode, and the limiting assembly is fixedly installed at one end of the fixing frame. The reinforcing assemblies are arranged on the two sides of the sliding sleeve, so that the ejector block abuts against the fixing frame, the contact and friction force between the hollow sliding block and the fixing frame are increased, the sliding sleeve is fixed in an auxiliary mode, extrusion of the sliding sleeve to threads on the surface of the two-way screw is reduced, abrasion between the sliding sleeve and the two-way screw is reduced, and the service life is prolonged. Meanwhile, distance change of the conveying rollers caused by rotation of the two-way screw is avoided, and the stability of the conveying rollers is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to high frequency straight seam welded pipe unit technical field, specifically a kind of high frequency straight seam welded pipe unit tension adjusting mechanism. BACKGROUND

[0002] The steel pipe welded by hot-rolled or cold-rolled steel plate or steel strip coil is called straight seam welded pipe, which is welded on welding equipment. The current straight seam welded pipe is prepared by unit, and the commonly used unit is high frequency straight seam welded pipe unit. The unit is named because of using high frequency welding machine. The normal high frequency straight seam welded pipe unit is composed of uncoiler, leveler, plate shearing machine, butt welding machine, spiral loop machine, FFX forming machine, high frequency welding machine, flaw detector, heat treatment device, sizing machine, cutting device, pipe end flat end beveler and hydraulic pressure testing machine. Through the cooperation of the above devices, the production of straight seam welded pipe can be smoothly completed. The high frequency straight seam welded pipe unit is provided with a plurality of conveying assemblies. Each conveying assembly is usually composed of an adjusting mechanism and two conveying rollers. The distance between the conveying rollers is adjusted by the adjusting mechanism to adapt to the conveying of pipes with different diameters.

[0003] The adjusting mechanism of the existing conveying assembly usually rotates bidirectional screw rod to drive two sliding sleeves on the surface to move towards each other, so that the two conveying rollers move synchronously to achieve the purpose of tension adjustment. When the steel pipe passes between the two conveying rollers after adjustment, it will push the two conveying rollers outward, so that the sliding sleeves and the thread grooves of the bidirectional screw rod are extruded, which can easily cause the bidirectional screw rod to rotate slightly, change the distance between the two conveying rollers and easily aggravate the wear between the sliding sleeves and the bidirectional screw rod. The stability after adjustment is poor. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of high frequency straight seam welded pipe unit tension adjusting mechanism to solve the problems raised in the above background.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A kind of high frequency straight seam welded pipe unit tension adjusting mechanism, including the conveying assembly of high frequency straight seam welded pipe unit, the conveying assembly includes fixed frame, bidirectional screw rod is rotatably connected in the fixed frame, the conveying assembly one end is equipped with fastening mechanism, the fastening mechanism includes:

[0007] Reinforcing assembly is movably arranged in the fixed frame, the reinforcing assembly includes two hollow sliding blocks, the outer surface of the hollow sliding block is symmetrically provided with through slot, two the through slot is symmetrically slidably connected with the top block in the inside, two the hollow sliding block is movably inserted with the rotating rod in the inside;

[0008] Limiting assembly is fixedly installed at one end of fixed frame.

[0009] Further in, the outer surface of the bidirectional screw is symmetrically connected with a sliding sleeve, and the sliding sleeve is slidably connected with the fixed frame, one side surface of each of the two sliding sleeves is fixedly provided with a mounting rod, and one end of the bidirectional screw is fixedly provided with a first bolt head.

[0010] Preferably, the inner part of the fixed frame is symmetrically provided with a sliding groove, the hollow sliding block is slidably connected with the sliding groove at the corresponding position, and the hollow sliding block is fixedly connected with the adjacent sliding sleeve.

[0011] Further in, the rotating rod penetrates through the fixed frame and is rotatably connected with the fixed frame, the outer surface of the rotating rod is symmetrically fixedly provided with an extrusion strip, one end of the rotating rod is fixedly provided with a circular ring, and the outer surface of the circular ring is fixedly provided with a second bolt head.

[0012] Preferably, one end surface of the fixed frame is symmetrically fixedly provided with a supporting ring, the supporting ring is movably inserted with an insertion rod, and the insertion rod penetrates through the supporting ring and is movably inserted with the circular ring.

[0013] Further in, the limiting assembly comprises:

[0014] A threaded sleeve is fixedly installed on the outer surface of the fixed frame;

[0015] A fastening knob is screwedly connected in the inner part of the threaded sleeve;

[0016] A limiting ring is rotatably connected with the lower end of the fastening knob.

[0017] Preferably, the outer surface of the bidirectional screw is fixedly provided with a conical gasket, and the limiting ring is slidably attached with the conical gasket.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] 1. By rotating the rotating rod by 90 degrees, the extrusion strip drives the top block to move outward, extrudes the inner wall of the sliding groove, and then inserts the insertion rod downward, so that the insertion rod is inserted into the inner part of the circular ring, the rotating rod is fixed, the hollow sliding block is fixed, the contact and friction between the hollow sliding block and the fixed frame are increased, the sliding sleeve is auxiliary fixed, the extrusion of the sliding sleeve on the surface thread of the bidirectional screw is reduced, the abrasion between the two is reduced, and the service life is increased.

[0020] 2. After the bidirectional screw is rotated, the fastening knob is screwed, the fastening knob drives the limiting ring to move downward, the conical gasket is attached, the outer surface of the bidirectional screw is resisted, the stability of the bidirectional screw is increased through the friction generated by extrusion, and the bidirectional screw is prevented from rotating, so that the change of the distance between the conveying rollers caused by the rotation of the bidirectional screw is avoided, and the stability of the conveying rollers is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1It is the whole structure schematic diagram of the utility model;

[0022] Fig. 2 It is the whole vertical section structure schematic diagram of the utility model;

[0023] Fig. 3 It is the fixed frame and reinforcing assembly side section structure schematic diagram in the utility model;

[0024] Fig. 4 It is the fixed frame and reinforcing assembly vertical section structure schematic diagram in the utility model;

[0025] Fig. 5 It is the bidirectional screw and limiting assembly vertical section structure schematic diagram in the utility model.

[0026] In the drawing: 1, conveying assembly;101, fixed frame;102, bidirectional screw;103, sliding sleeve;104, mounting rod;105, No. 1 bolt head;106, sliding groove;2, reinforcing assembly;201, hollow sliding block;202, through slot;203, top block;204, rotating rod;205, extruded strip;206, circular ring;207, No. 2 bolt head;208, support ring;209, insertion rod;3, limiting assembly;301, threaded sleeve;302, fastening knob;303, limiting ring;305, conical washer. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts belong to the protection scope of the utility model.

[0028] Please refer to Figs. 1-5 In the embodiments of the utility model, a kind of high frequency straight seam welded pipe unit tension adjustment mechanism, including the conveying assembly 1 of high frequency straight seam welded pipe machine, conveying assembly 1 includes fixed frame 101, bidirectional screw 102 is rotatably connected in fixed frame 101, sliding sleeve 103 is symmetrically screwed on the outer surface of bidirectional screw 102, and sliding sleeve 103 is slidably connected with fixed frame 101, conveying assembly 1 one end is equipped with fastening mechanism, fastening mechanism includes: reinforcing assembly 2 is movably arranged in fixed frame 101, reinforcing assembly 2 includes two hollow sliding blocks 201, two hollow sliding blocks 201 outer surface is symmetrically provided with through slot 202, two through slots 202 are symmetrically slidably connected with top block 203 inside, rotating rod 204 is movably inserted in the inside of two hollow sliding blocks 201, limiting assembly 3 is fixedly installed at one end of fixed frame 101.

[0029] Specifically, when the bidirectional screw 102 rotates, under the sliding limit of the sliding sleeve 103 and the fixed frame 101, the two sliding sleeves 103 move towards each other, adjust the distance between the two conveying rollers, adapt to the conveying of steel pipes of different diameters, reinforce the sliding sleeve 103 through the reinforcing assembly 2, increase the friction of its rotation, improve the stability of the conveying roller, and at the same time, increase the firmness of the bidirectional screw 102 through the limiting assembly 3, further improve the stability of the conveying roller.

[0030] Embodiment one

[0031] As shown in the figure, in this embodiment, the two sliding sleeves 103 are fixedly installed with mounting rods 104 on one side surface, and the bidirectional screw 102 is fixedly installed with a first bolt head 105 at one end. Figs. 1-3

[0032] In this embodiment, the mounting rod 104 is used for mounting the conveying roller, the first bolt head 105 makes it more convenient for the wrench to rotate the bidirectional screw 102, and the hollow sliding block 201 slides in the sliding groove 106, and is fixed through the fit of the top block 203 and the sliding groove 106.

[0033] As shown in the figure, in this embodiment, the rotating rod 204 penetrates through the fixed frame 101 and is rotatably connected with the fixed frame 101, the rotating rod 204 is fixedly installed with extrusion strips 205 on the outer side surface in a symmetrical manner, the rotating rod 204 is fixedly installed with a circular ring 206 at one end, and the circular ring 206 is fixedly installed with a second bolt head 207 on the outer side surface. Figs. 2-4

[0034] Specifically, through the second bolt head 207, the wrench is more convenient to rotate the rotating rod 204, the rotating rod 204 is rotated by 90°, the extrusion strip 205 drives the top block 203 to move outward, extrudes the inner wall of the sliding groove 106, and then drives the insertion rod 209 to move downward, so that the insertion rod 209 is inserted into the inside of the circular ring 206, the rotating rod 204 is fixed, the hollow sliding block 201 is fixed, and the sliding sleeve 103 is fixedly assisted through the increase of the contact and friction between the hollow sliding block 201 and the fixed frame 101, the extrusion of the sliding sleeve 103 on the surface thread of the bidirectional screw 102 is reduced, the wear between the two is reduced, and the service life is increased.

[0035] Embodiment two

[0036] On the basis of embodiment one, in order to make up for the problem that the bidirectional screw 102 is easy to rotate.

[0037] ​​As Figs. 1-5 As shown in the figure, in the embodiment, the limiting assembly 3 comprises: a threaded sleeve 301 fixedly installed on the outer surface of the fixed frame 101, a fastening knob 302 screw-coupled to the inner portion of the threaded sleeve 301, and a limiting ring 303 rotationally connected to the lower end of the fastening knob 302; a conical washer 305 is fixedly installed on the outer surface of the bidirectional screw 102, and the limiting ring 303 is in sliding contact with the conical washer 305.

[0038] In the embodiment, after the bidirectional screw 102 is rotated, the fastening knob 302 is screwed to make the limiting ring 303 move downward and press the conical washer 305, and at the same time, the limiting ring 303 is abutted against the outer surface of the bidirectional screw 102. Through the friction force generated by the pressing, the stability of the bidirectional screw 102 is increased, and the self-rotation of the bidirectional screw 102 is prevented, so that the change of the distance between the conveying rollers caused by the self-rotation of the bidirectional screw 102 is avoided, and the stability of the conveying rollers is improved.

[0039] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

[0040] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A high-frequency straight seam pipe unit tension adjusting mechanism, comprising a conveying assembly (1) of a high-frequency straight seam pipe unit, the conveying assembly (1) comprising a fixed frame (101), a bidirectional screw rod (102) being rotatably connected inside the fixed frame (101), characterized in that, One end of the conveying assembly (1) is provided with a fastening mechanism, the fastening mechanism comprises: Reinforcing assembly (2), movably provided in the fixed frame (101), the reinforcing assembly (2) comprises two hollow sliding blocks (201), the outer surface of the hollow sliding block (201) is symmetrically provided with a through slot (202), two through slots (202) are symmetrically connected with a top block (203), two hollow sliding blocks (201) are movably inserted with a rotating rod (204); Limiting assembly (3), fixedly installed on one end of the fixed frame (101).

2. The high-frequency direct-welded pipe unit tension adjusting mechanism according to claim 1, characterized by, The outer surface of the bidirectional screw (102) is symmetrically screwed with a sliding sleeve (103), and the sliding sleeve (103) is slidably connected with the fixed frame (101), two sliding sleeves (103) are fixedly installed with mounting rods (104) on one side surface, and the bidirectional screw (102) is fixedly installed with a first bolt head (105) on one end.

3. The high-frequency direct-welded pipe unit tension adjusting mechanism according to claim 2, characterized by, The fixed frame (101) is symmetrically provided with a sliding groove (106) inside, the hollow sliding block (201) is slidably connected with the sliding groove (106) at the corresponding position, and the hollow sliding block (201) is fixedly connected with the adjacent sliding sleeve (103).

4. The high-frequency direct-welded pipe unit tension adjusting mechanism according to claim 1, characterized by The rotating rod (204) penetrates through the fixed frame (101) and is rotatably connected with the fixed frame (101), the outer surface of the rotating rod (204) is symmetrically fixedly installed with an extrusion strip (205), one end of the rotating rod (204) is fixedly installed with a circular ring (206), and the outer surface of the circular ring (206) is fixedly installed with a second bolt head (207).

5. The high-frequency direct-welded pipe unit tension adjusting mechanism according to claim 4, characterized by The outer surface of the fixed frame (101) is symmetrically fixedly installed with a supporting ring (208), the supporting ring (208) is movably inserted with an insertion rod (209), and the insertion rod (209) penetrates through the supporting ring (208) and is movably inserted with the circular ring (206).

6. The high-frequency direct-weld pipe mill take-up and tension adjustment mechanism of claim 1 wherein, The limiting assembly (3) comprises: Threaded sleeve (301), fixedly installed on the outer surface of the fixed frame (101); Fastening knob (302), screwing connection is made in the threaded sleeve (301); Limiting ring (303), rotatably connected with the lower end of the fastening knob (302).

7. The high-frequency direct-weld pipe mill take-up and tension adjustment mechanism of claim 6 wherein, The outer surface of the bidirectional screw (102) is fixedly installed with a conical gasket (305), and the limiting ring (303) is slidably attached with the conical gasket (305).

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