Welding bench

Abstract

The welding stand provided by the present invention includes two beams correspondingly arranged at two positions; two outward-extended slide rails are fixed on the two beams, an adjustable support leg is arranged below one end of the outward-extended slide rail away from the beam, a sliding sleeve is slidably connected to the outward-extended slide rail, and an adjustable clamp is arranged on the sliding sleeve; and an adjusting bolt is connected between the two beams, and the distance between the two beams is adjusted and fixed by the adjusting bolt and nut. The above invention can be used to fix the position of various sizes of parts to be welded by adjusting the position of each adjustable clamp on the outward-extended slide rail, thereby improving welding accuracy and welding efficiency and ensuring the welding quality of steel structural parts.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment welding, and more specifically, to a welding stand. Background Art

[0002] In steel structure bridges and steel structure construction projects, a large number of steel plates or steel pipes need to be welded. In order to ensure the welding quality and prevent welding deformation, the parts to be welded are usually placed on a support frame for welding. During the welding process, in order to ensure that the welded steel structure components meet the design requirements for geometry and weld quality requirements, it is usually necessary to manually hold the parts to be welded by hand before welding. Since manual assistance is required, this traditional welding method has low working efficiency.

[0003] In addition, from the working principle, welding is a processing method that achieves atomic bonding at the weld by heating, pressurizing or both (sometimes filling materials are required during the welding process). In addition, welding is also a processing method that connects multiple separated metal structural parts into an integral metal part that cannot be disassembled. The characteristic of welding is that it can reduce large parts to small parts and combine small parts to large parts. Therefore, when manufacturing large structural parts such as steel box beams or steel roof trusses, the parts need to be processed to achieve the purpose of overall assembly.

[0004] However, for welding processes with complex steel structures and high welding quality requirements, it is necessary to accurately control the welding position, welding temperature, welding time, etc. Otherwise, it will directly affect the welding quality. The existing welding methods are usually difficult to meet the various requirements because they are manually fixed in the early stage of welding.

[0005] Based on the above technical problems, a method that can improve both welding accuracy and welding efficiency is urgently needed. Summary of the invention

[0006] In view of the above problems, an object of the present invention is to provide a welding stand which can fix the positions of various sizes of welded parts by adjusting the positions of the adjustable clamps on the outward slide rails, thereby improving welding accuracy and welding efficiency.

[0007] To achieve the above-mentioned purpose, the present invention provides a welding stand, comprising two beams correspondingly arranged at two positions;

[0008] Two outward-extending slide rails are bolted to the ends of the two cross beams, an adjustable support leg is arranged below one end of the outward-extending slide rail away from the cross beam, a sliding sleeve is slidably connected to the outward-extending slide rail, and an adjustable clamp is arranged on the sliding sleeve; and

[0009] An adjusting bolt is connected between the two cross beams, and the distance between the two cross beams is adjusted and fixed by the adjusting bolt and a nut.

[0010] In addition, a preferred solution is that a positioning bolt is provided on the sliding sleeve, and the sliding sleeve is fixed to a preset position of the outward-expanding sliding rail by the positioning bolt.

[0011] In addition, a preferred solution is that the adjustable clamp includes two gears and two clamping arms, wherein the two gears are rotatably connected to the top of the sliding sleeve through a first hinge and mesh with each other, and the ends of the two clamping arms close to each other are rotatably connected to the top of the sliding sleeve through a second hinge; and

[0012] An extension rod is integrally formed on the side of the two gears away from each other, and a connecting rod is rotatably connected to the two extension rods via a third hinge. The ends of the two connecting rods away from the extension rods are rotatably connected to the ends of the two clamping arms away from each other via a fourth hinge.

[0013] In addition, a preferred solution is that a crank handle is provided on any one of the gears.

[0014] In addition, a preferred solution is that a positioning fixture corresponding to the position of the gear is also provided on the sliding sleeve.

[0015] In addition, a preferred solution is that the opening and closing angle range between the two clamp arms is 0 degree to 180 degrees.

[0016] In addition, a preferred solution is that the adjustable supporting leg includes a positioning block and a supporting block, the positioning block is fixedly connected to the outward-extending slide rail, a threaded rod is fixedly connected to the lower end of the positioning block, a threaded hole matching the threaded rod is opened on the supporting block, and the supporting block is arranged below the positioning block through the threaded rod and the threaded hole.

[0017] In addition, a preferred solution is that a conical support foot is integrally formed at the bottom of the support block.

[0018] In addition, a preferred solution is that the four outward-extending slide rails are X-shaped as a whole.

[0019] According to the above technical content, the present invention can effectively support and position the objects to be welded by designing a set of welding stands by itself, eliminating the process of manual assistance, and can significantly improve the work efficiency of the welding process; in addition, through the self-designed adjustable clamp structure, it can achieve clamping and fixation of objects to be welded with different shape angles, effectively improving the practicality of the entire device; in addition, by arranging adjustable support legs with adjustable height under the outward-stretched slide rails, the entire device can be used in situations where the ground is uneven, further improving its practicality.

[0020] In order to achieve the above and related purposes, one or more aspects of the present invention include the features that will be described in detail later. The following description and the accompanying drawings describe some exemplary aspects of the present invention in detail. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more apparent and easy to understand. In the accompanying drawings:

[0022] Figure 1 A schematic diagram of the structure of a welding stand according to an embodiment of the present invention;

[0023] Figure 2 is a top view of an adjustable clamp according to an embodiment of the present invention;

[0024] Figure 3 is a partial enlarged view of an adjustable supporting leg according to an embodiment of the present invention;

[0025] Among them, the figure marks include: adjusting bolt 11, nut 111, cross beam 12, outward slide rail 13, adjustable clamp 14, sliding sleeve 141, positioning bolt 142, gear 143, first hinge 1431, extension rod 1432, connecting rod 144, third hinge 1441, fourth hinge 1442, clamping arm 145, second hinge 1451, adjustable support leg 15, positioning block 151, threaded hole 152, threaded rod 153, support block 154, tapered support foot 155.

[0026] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0027] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is apparent that these embodiments may also be implemented without these specific details. In other examples, for ease of describing one or more embodiments, known structures and devices are shown in the form of block diagrams.

[0028] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Figure 1 The three-dimensional structure of the welding stand according to the embodiment of the present invention is shown; Figure 2 The top view structure of the adjustable clamp according to the embodiment of the present invention is shown; Figure 3A partially enlarged structure of an adjustable supporting leg according to an embodiment of the present invention is shown.

[0030] Combination Figures 1 to 3 As shown together, the welding stand provided by the present invention includes two beams 12 arranged at corresponding positions (usually set to be parallel) for supporting purposes; wherein, two outward-stretched slide rails 13 are bolted to the two beams 12, an adjustable supporting leg 15 is arranged below one end of the outward-stretched slide rail 13 away from the beam 12, a sliding sleeve 141 is slidably connected to the outward-stretched slide rail 13, the sliding sleeve 141 can slide freely on the outward-stretched slide rail 13, and an adjustable clamp 14 is arranged on the sliding sleeve 141; and an adjusting bolt 11 is connected between the two beams 12, and the distance between the two beams 12 is adjusted and fixed by adjusting the adjusting bolt 11 in cooperation with a nut.

[0031] In actual use, it is necessary to first adjust the distance between the two beams 12 according to the size of the parts to be welded (by adjusting the bolts 11 in cooperation with the nuts), and wait until the distance between the two beams 12 is appropriate; then adjust the specific positions of the adjustable clamps 14 on the outward-stretched slide rail 13 so that the space formed between the four adjustable clamps can just accommodate the parts to be welded; then clamp and fix the parts to be welded at the corresponding positions with the adjustable clamps, and when all parts of the parts to be welded are stable, the corresponding welding operation can be carried out.

[0032] It should be noted that since the distance between the two cross beams 12 on the welding stand provided by the present invention and the positions of each adjustable clamp 14 on the outward slide rail 13 are adjusted as needed, the welding stand provided by the present invention can be suitable for parts to be welded of different sizes and shapes, and has high practicality.

[0033] In addition, since the position of the parts to be welded needs to be fixed, after adjusting the position of each adjustable clamp 14 on the outward-expanding slide rail 13, it is necessary to first fix the position of each adjustable clamp 14. To achieve this function, a positioning bolt 142 can be provided on the sliding sleeve 141, and the sliding sleeve 141 is fixed to the preset position of the outward-expanding slide rail 13 by the positioning bolt 142. Since the adjustable clamp 14 is fixed to the sliding sleeve 141, the corresponding requirements can be met at this time.

[0034] Specifically, in order to achieve the clamping effect of the adjustable clamp 14, the adjustable clamp 14 can specifically include two gears 143 and two clamping arms 145, wherein the two gears 143 are rotatably connected to the top of the sliding sleeve 141 through a first hinge 1431 and mesh with each other, and the ends of the two clamping arms 145 that are close to each other are rotatably connected to the top of the sliding sleeve 141 through a second hinge 1451; and, extension rods 1432 are integrally formed on the side where the two gears 143 are away from each other, and connecting rods 144 are rotatably connected to the two extension rods 1432 through a third hinge 1441, and the ends of the two connecting rods 144 that are away from the extension rods 1432 are rotatably connected to the ends of the two clamping arms 145 that are away from each other through a fourth hinge 1442.

[0035] In actual use, when any one of the two gears 143 is rotated, since the two gears 143 are meshed with each other, the two gears 143 can rotate simultaneously. When the two gears 143 rotate, the extension rods 1432 on the two gears 143 will swing upward or downward at the same time (depending on the rotation direction of the gears 143). Figure 2 In the embodiment, the gear 143 rotates clockwise, the extension rod 1432 swings downward, the gear 143 rotates counterclockwise, and the extension rod 1432 swings upward). When the two extension rods 1432 swing upward at the same time, the connecting rod 144 connected to each extension rod 1432 will move upward, and as the two connecting rods 144 move upward, the two connecting rods 144 will drive the main parts of the two clamping arms 145 to move closer to each other, thereby achieving the effect of clamping the parts to be welded. When the two extension rods 1432 swing downward at the same time, the connecting rod 144 connected to each extension rod 1432 will move downward, and as the two connecting rods 144 move downward, the two connecting rods 144 will drive the main parts of the two clamping arms 145 to move away from each other, thereby achieving the effect of releasing the parts to be welded.

[0036] Specifically, to facilitate the rotation of the gear 143, a crank handle can be fixed on any gear 143. When the gear 143 needs to be rotated, the gear 143 can be driven to rotate by manually turning the crank handle, which can save effort and prevent the gear 143 from pinching the hand.

[0037] It should be noted that a positioning fixture corresponding to the position of the gear 143 is also required to be provided on the sleeve 141 (not shown in the figure, tighten any outer nut of the gear 143 to fix it). When the gear 143 is rotated to the preset position to clamp and fix the parts to be welded, it is necessary to use the positioning fixture to fix the gear 143 in position to prevent the adjustable fixture from accidentally releasing the parts to be welded and affecting the welding quality.

[0038] In addition, it should be noted that due to the different structures of different parts to be welded, in order to enable the adjustable clamp 14 to clamp parts to be welded with different structures, the opening and closing angle range between the two clamp arms 145 needs to be set to 0 degrees to 180 degrees.

[0039] In a specific embodiment of the present invention, the adjustable support leg 15 may include a positioning block 151 and a support block 154. The positioning block 151 is fixedly connected to the lower end of the corner of the outward-expanding slide rail 13. A threaded rod 153 is fixedly connected to the lower end of the positioning block 151. A threaded hole 152 that is adapted to the threaded rod 153 is opened on the support block 154. The support block 154 is arranged below the positioning block 151 through the threaded rod 153 and the threaded hole 152.

[0040] In actual use, the ground at some work locations is uneven (especially outdoors). To ensure that the entire welding stand is in a stable state, it is necessary to adjust the support height of the entire adjustable support leg 15 through the threaded rod 153 and the threaded hole 152 according to the actual ground conditions, thereby ensuring the stability of the entire welding stand.

[0041] Of course, in order to further improve the stability of the welding stand (especially when working outdoors), a conical support foot 155 can be integrally formed at the bottom of the support block 154. When the entire device is supported to a preset position, the bottom of the conical support foot 155 can be inserted into the ground, thereby further improving the stability of the welding stand.

[0042] It should be noted that the four outward-extended slide rails 13 are in an X-shape as a whole. Based on the structural characteristics of the X-shape, the four sliding sleeves 141 can slide on the X-shaped slide rails to form a variety of shapes together, such as squares, rectangles, parallelograms, trapezoids and other structures. Of course, if one sliding sleeve 141 is omitted, a triangular structure can also be formed; therefore, setting the four outward-extended slide rails 13 to be in an X-shape as a whole can significantly improve the practicality of the entire welding stand.

[0043] The structure of the welding stand provided by the present invention is further described below by way of an example. Take welding a square steel tube frame (part to be welded) with a diameter of 5 cm as an example, the side length of which is 2m*2m, four square steels of 40*40*4mm and 2m long are selected as the outward-stretching slide rails 13, two square steels of 50*30*3mm and 60cm long are selected to make the crossbeam 12, and screw rods M20 are selected as the adjustment bolts 11 for adjusting the crossbeam 12. The crossbeam 12 is connected to the outward-stretching slide rail 13 with M10 bolts, and the sliding sleeves 141 of the four adjustable clamps 14 are made of square steel, and positioning bolts 142 are respectively installed on the sides, and the clamping arms 145 of the adjustable clamps 14 form toothed openings for clamping the parts to be welded. The four ends of the outward slide rail 13 are equipped with adjustable legs, the finished welding stand is placed on the ground, the threaded rod 153 is adjusted to make the welding stand horizontal, the steel pipe joint of the square steel frame is placed on the adjustable clamp 14, the adjustable clamp 14 is adjusted to a right angle, the sliding sleeves 141 at the bottom of the four adjustable clamps 14 are fixed, and the adjusting bolts 11 in the middle of the crossbeam 12 are tightened to fix the square steel pipe welded parts as a whole, and the flatness of the welding stand is checked, and the size, angle, and shape of the welding seam of the steel square steel pipe welded parts are checked. After meeting the requirements, welding is started, and the welding is carried out in a symmetrical welding manner. After welding is completed, the weld is polished and the welding stand is folded. The welding stand can be disassembled and is easy to carry.

[0044] The welding stand according to the present invention is described above by way of example with reference to the accompanying drawings. However, it should be understood by those skilled in the art that various improvements can be made to the welding stand proposed by the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the content of the attached claims.

Claims

1. A welding stand, comprising two beams arranged correspondingly at two positions; characterized in that: Two outward-extending slide rails are connected to the two cross beams respectively, an adjustable support leg is arranged below one end of the outward-extending slide rail away from the cross beam, a sliding sleeve is slidably connected to the outward-extending slide rail, and an adjustable clamp is arranged on the sliding sleeve; and An adjusting bolt is connected between the two cross beams, and the distance between the two cross beams is adjusted and fixed by the adjusting bolt and the nut; a positioning bolt is arranged on the sliding sleeve, and the sliding sleeve is fixed at a preset position of the outward-stretched slide rail by the positioning bolt; The adjustable clamp includes two gears and two clamping arms, wherein the two gears are rotatably connected to the top of the sliding sleeve through a first hinge and mesh with each other, and the ends of the two clamping arms that are close to each other are rotatably connected to the top of the sliding sleeve through a second hinge; and, an extension rod is integrally formed on the side of the two gears that are away from each other, and connecting rods are rotatably connected to the two extension rods through a third hinge, and the ends of the two connecting rods that are away from the extension rods are rotatably connected to the ends of the two clamping arms that are away from each other through a fourth hinge; a crank handle is provided on any one of the gears; a positioning fixture corresponding to the position of the gear is also provided on the sliding sleeve; the opening and closing angle range between the two clamping arms is 0 degrees-180 degrees.

2. The welding stand according to claim 1, characterized in that: The adjustable supporting leg includes a positioning block and a supporting block. The positioning block is fixedly connected to the outward-expanding slide rail. A threaded rod is fixedly connected to the lower end of the positioning block. A threaded hole matching the threaded rod is opened on the supporting block. The supporting block is arranged below the positioning block through the threaded rod and the threaded hole.

3. The welding stand according to claim 2, characterized in that: A conical support foot is integrally formed at the bottom of the support block.

4. The welding stand according to any one of claims 1 to 3, characterized in that: The four outward-extending slide rails are in an X shape as a whole.

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