Fixing device for machining inner weld bead of extra-thick-wall steel pipe

Abstract

The utility model provides a fixing device for processing an inner weld bead of an extra-thick wall steel pipe, which comprises supporting seats and a base, the number of the supporting seats is two, each supporting seat comprises a V-shaped plate, a supporting plate, a connecting plate, a bottom plate and a connecting hole, the base is provided with a plurality of sliding chutes which are distributed in parallel, the sliding chutes are connected with bolts arranged in the connecting holes, and the V-shaped plates are connected with the bottom plate through bolts. A pair of foundation steel plates is arranged on the two sides of the base, a pair of foot bolts are arranged on one foundation steel plate, steel ropes are arranged on the foot bolts, a pair of fixed hinge supports are arranged on the other foundation steel plate, tension cylinders are arranged on the fixed hinge supports, and the head ends of the tension cylinders are connected with hooks at one ends of the steel ropes. The supporting seat provided by the utility model is completely formed by welding steel structures, has higher structural strength, is convenient to dispatch, can be flexibly adjusted with the base, and is higher in practicability; the steel rope can effectively press the extra-thick-wall steel pipe on the supporting seat through the stretching and rotating actions of the tension cylinder, and the machining quality of an inner welding bead of the extra-thick-wall steel pipe can be improved.

Description

Technical Field

[0001] The utility model belongs to the field of steel pipe production and processing equipment, in particular to a fixing device for processing the inner weld of a particularly thick-walled steel pipe. Background Art

[0002] Extra thick wall steel pipe, as the name implies, is a steel pipe that is much thicker than ordinary steel pipes. These steel pipes are usually made of extra thick steel plates that are curled into a fixed diameter and then welded. This extra thick steel pipe is widely used in steel structure buildings, such as steel tube concrete, pipe piles, pipe trusses, bridges, offshore platforms, port terminal construction, TV communication towers, power towers and other steel structure pipes, as well as some pressure pipelines, such as oil, natural gas, coal slurry and other transportation pipelines, as well as mechanical roller manufacturing and other fields.

[0003] When welding the welds of extra-thick-walled steel pipes, it is also necessary to uniformly process the welds, including the processing of the outer welds and the inner welds, to ensure the quality of subsequent welding. The extra-thick-walled steel pipes to be processed are usually placed on the floor of the workshop or on special fixtures, and the latter is more convenient for other equipment to transfer the extra-thick-walled steel pipes. However, the fixtures supporting the extra-thick-walled steel pipes are usually V-shaped tables. This type of fixture cannot avoid the influence of workshop vibration factors on its stability, and often directly affects the processing quality of the outer welds, and then affects the quality of the final steel pipes; secondly, the scheduling flexibility of the fixtures used for extra-thick-walled steel pipes is poor, and their utilization rate is low. Utility Model Content

[0004] The utility model aims at the technical problems existing in the clamps for extra-thick-walled steel pipes and proposes a fixing device for processing the inner weld of extra-thick-walled steel pipes which has reasonable design, simple structure, good clamping stability and high utilization rate.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is that the fixing device for processing the internal weld of an extra-thick-walled steel pipe provided by the utility model comprises a support seat, a V-shaped supporting opening is arranged on the top of the support seat, the number of the support seats is 2 and they include a V-shaped plate, a support plate is arranged at the bottom of the V-shaped plate, a connecting plate is arranged between the support plates, a bottom plate is arranged at the bottom of the support plate, a plurality of pairs of connecting holes are arranged on the bottom plate, the support seat is arranged on a base, a plurality of parallel distributed slide grooves are arranged on the base, the slide grooves are connected with bolts arranged in the connecting holes, a pair of basic steel plates are arranged on both sides of the base, a pair of foot bolts are arranged on one of the basic steel plates, a steel rope is arranged on the foot bolt, hooks are arranged at both ends of the steel rope, a pair of fixed hinges are arranged on the other basic steel plate, a tension cylinder is arranged on the fixed hinge, and the head end of the tension cylinder is connected with the hook at one end of the steel rope.

[0006] Preferably, a tension spring connected to the tension cylinder is provided on the base.

[0007] Preferably, one end of the hook is provided with an internal threaded hole, and the end of the steel rope is provided with an external threaded rod connected to the internal threaded hole.

[0008] Preferably, a plurality of shock-absorbing springs are arranged at the bottom of the base.

[0009] Preferably, the shock absorbing spring comprises two relatively distributed spring plates, the spring plate comprises a horizontal portion, and both ends of the horizontal portion are provided with arcuate portions bent toward the middle thereof.

[0010] Compared with the prior art, the advantages and positive effects of the utility model are:

[0011] 1. The fixture for processing the inner weld of a thick-walled steel pipe provided by the utility model is made entirely of welded steel structures, has high structural strength, is easy to dispatch, and can be flexibly adjusted with the base, and is highly practical; the tension cylinder rotates along the fixed hinge while extending and retracting, and this feature enables the steel rope connected to it to effectively compress the thick-walled steel pipe on the support seat, thereby ensuring the stability of the thick-walled steel pipe during processing, which is conducive to improving the quality of processing the inner weld. The device has a reasonable design, a simple structure, good clamping stability, and a high utilization rate, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 An axonometric view of a fixture for processing the inner weld of a particularly thick-walled steel pipe provided in an embodiment;

[0014] Figure 2 A side view of a fixture for processing the inner weld of a particularly thick-walled steel pipe provided in an embodiment;

[0015] Figure 3 A front view of a shock absorbing spring provided in an embodiment;

[0016] Figure 4 Axonometric drawing of the fixture and internal milling device for processing the internal weld of extra thick-walled steel pipes;

[0017] In the above figures, 1, support seat; 1a, V-shaped plate; 1b, support plate; 1c, connecting plate; 1d, bottom plate; 1e, connecting hole; 2, base; 21, slide groove; 3, foundation steel plate; 4, foot bolt; 5, steel rope; 51, external threaded rod; 6, hook; 7, fixed hinge; 8, tension cylinder; 9, tension spring; 10, shock-absorbing spring; 101, spring plate; 1011, horizontal part; 1012, arc part; 11, internal milling device. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear below, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] Examples, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the fixing device for processing the inner weld of an extra-thick-walled steel pipe provided by the utility model comprises a support seat 1, the top of the support seat 1 is provided with a V-shaped supporting opening, the number of the support seats 1 is 2 and they comprise a V-shaped plate 1a, the bottom of the V-shaped plate 1a is provided with a support plate 1b, a connecting plate 1c is provided between the support plates 1b, a bottom plate 1d is provided at the bottom of the support plate 1b, a plurality of pairs of connecting holes 1e are provided on the bottom plate 1d, the support seat 1 is provided on a base 2, a plurality of parallelly distributed slide grooves 21 are provided on the base 2, the slide grooves 21 are connected with bolts provided in the connecting holes 1e, a pair of basic steel plates 3 are provided on both sides of the base 2, a pair of foot bolts 4 are provided on one of the basic steel plates 3, a steel rope 5 is provided on the foot bolt 4, hooks 6 are provided at both ends of the steel rope 5, a pair of fixed hinges 7 are provided on the other basic steel plate 3, a tension cylinder 8 is provided on the fixed hinge 7, and the head end of the tension cylinder 8 is connected to the hook 6 at one end of the steel rope 5. The hook 6 can be removed from the foot bolt 4 or the end of the tension cylinder 8 when the steel rope 5 is loosely connected, which is convenient for bypassing the extra thick-walled steel pipe and also convenient for replacing steel ropes 5 of different lengths.

[0021] Specifically, the support seat 1 is made entirely of welded steel structures, has high structural strength, is easy to dispatch, and can be flexibly adjusted with the slide groove 21 of the base 2 through bolts, and is highly practical; due to the connection characteristics of the tension cylinder 8 and the flip beam, the tension cylinder 8 can also rotate along the fixed hinge 7 while extending and retracting, and this feature enables the steel rope 5 connected to the tension cylinder 8 to produce a change in span, and the change in span is ultimately reflected in its compression of the extra-thick-walled steel pipe, until the steel rope 5 effectively compresses the extra-thick-walled steel pipe on the support seat 1, thereby ensuring the stability of the extra-thick-walled steel pipe during processing, which is beneficial to improving the quality of processing of the internal weld.

[0022] In order to improve the working stability and safety of the tension cylinder 8, the utility model provides a tension spring 9 connected to the tension cylinder 8 on the base 2. The tension spring 9 provides tension when the telescopic end of the tension cylinder 8 is toward the extra-thick-walled steel pipe, and provides supporting force when the telescopic end of the tension cylinder 8 is away from the extra-thick-walled steel pipe, thereby ensuring the working performance of the tension cylinder 8.

[0023] In order to facilitate fine-tuning of the length of the steel rope 5, an internal threaded hole is provided at one end of the hook 6 provided by the utility model, and an external threaded rod 51 connected to the internal threaded hole is provided at the end of the steel rope 5. By adjusting the screwing depth between the external threaded rod 51 and the internal threaded hole, the length of the steel rope 5 can be fine-tuned, so that it can better bundle the extra thick-walled steel pipe.

[0024] In order to improve the working stability of the device, the utility model is provided with a plurality of shock absorbing springs 10 at the bottom of the base 2 .

[0025] Furthermore, the shock-absorbing spring 10 includes two relatively distributed spring plates 101, and the spring plates 101 include a horizontal portion 1011. Both ends of the horizontal portion 1011 are provided with arcuate portions 1012 bent toward the middle thereof. The relatively distributed arcuate portions 1012 of the same pair of spring plates 101 can act on each other's horizontal portions 1011, and can produce corresponding deformations under forced conditions. The deformation direction adapts to the forced direction, has a good shock-absorbing effect, can overcome various vibration factors in the workshop, and ensure the stability of the extra-thick-walled steel pipe on the base 2.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A fixing device for processing welds inside extra-thick-walled steel pipes, comprising a support seat, the top of which is provided with a V-shaped support opening, characterized in that: The number of the support seats is 2 and they include V-shaped plates, a support plate is provided at the bottom of the V-shaped plate, a connecting plate is provided between the support plates, a bottom plate is provided at the bottom of the support plate, and multiple pairs of connecting holes are provided on the bottom plate. The support seat is provided on the base, and the base is provided with multiple parallel distributed slide grooves, and the slide grooves are connected to the bolts provided in the connecting holes. A pair of basic steel plates are provided on both sides of the base, one of the basic steel plates is provided with a pair of foot bolts, and the foot bolts are provided with steel ropes, and hooks are provided at both ends of the steel ropes. A pair of fixed hinges are provided on the other basic steel plate, and a tension cylinder is provided on the fixed hinge, and the head end of the tension cylinder is connected to the hook at one end of the steel rope.

2. The fixing device for processing the inner weld of an extra-thick-walled steel pipe according to claim 1, characterized in that: A tension spring connected to the tension cylinder is provided on the base.

3. The fixing device for processing the inner weld of an extra-thick-walled steel pipe according to claim 2, characterized in that: One end of the hook is provided with an internal thread hole, and the end of the steel rope is provided with an external thread rod connected with the internal thread hole.

4. The fixing device for processing the inner weld of an extra-thick-walled steel pipe according to claim 3, characterized in that: A plurality of shock-absorbing springs are arranged at the bottom of the base.

5. The fixing device for processing the inner weld of an extra-thick-walled steel pipe according to claim 4, characterized in that: The shock absorbing spring includes two spring plates that are distributed opposite to each other. The spring plates include a horizontal portion. Both ends of the horizontal portion are provided with arcuate portions that are bent toward the middle thereof.

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