Double-swing-arm type equidistant positioning device for welding reinforcing ribs for building construction

Abstract

The invention belongs to the technical field of building construction, and particularly discloses a double-swing-arm type equidistant positioning device for reinforcing rib welding for building construction, which comprises a first workpiece, and vertical reinforcing ribs are mounted on the left side surface and the right side surface of the inner side of the first workpiece in an attached manner; a first mounting rod and a second mounting rod are arranged on the ground of the inner side of the first workpiece, and the adjacent ends of the first mounting rod and the second mounting rod are rotationally connected; limiting rods are symmetrically arranged on the outer sides of the ends, away from each other, of the first mounting rod and the second mounting rod. Secondly, under the action of a first sliding table, a rotating rod can be driven to move, the rotating rod drives a follow-up limiting rod to slide, under the action of a scale groove, the front limiting rod and the rear limiting rod can be in a symmetrical state, and it can be guaranteed that in the follow-up welding process, front reinforcing ribs and rear reinforcing ribs can be in a symmetrical state; therefore, the dislocation condition is avoided, and the welding effect is further ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of positioning devices, and in particular to a double swing arm type equidistant positioning device for reinforcing bar welding in building construction. Background Art

[0002] During the building construction process, the welding of reinforcing bars is a key step, which is directly related to the structural strength and stability of the building. However, traditional welding methods often have problems such as inaccurate positioning and low welding efficiency. Especially in large-scale building construction, the number of reinforcing bars is numerous, the welding workload is large, and the requirements for the positioning device are also higher.

[0003] At present, there are some positioning devices on the market, but most of them have problems such as complex operation, low positioning accuracy, and poor adaptability.

[0004] For example, some positioning devices require manual adjustment of the position of the reinforcing bars, which is not only time-consuming and laborious, but also prone to errors. In addition, during the positioning process, although the reinforcing bars can be positioned, due to the need to perform operations such as clamping on the reinforcing bars, this results in the need to perform spot welding first during the welding process, and then adjust the positioning device before the reinforcing bar as a whole and the workpiece can be welded together completely. Thus, the clamping positioning device will interfere with the welding movement during the positioning process. For example, when a certain side of the positioning device and the reinforcing bar is in a horizontal state, the positioning device needs to be adjusted at this time.

[0005] Therefore, in order to improve the welding efficiency and avoid adjusting the positioning device, we specifically propose a double swing arm type equidistant positioning device for reinforcing bar welding in building construction. Summary of the Invention

[0006] The purpose of the present invention is to provide a double swing arm type equidistant positioning device for reinforcing bar welding in building construction to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A double swing arm type equidistant positioning device for reinforcing bar welding in building construction, including a first workpiece, and vertical reinforcing bars are fitted and installed on the left and right inner side surfaces of the first workpiece; A first mounting rod and a second mounting rod are arranged on the inner ground of the first workpiece, and the adjacent ends of the first mounting rod and the second mounting rod are rotatably connected; Limiting rods are symmetrically arranged on the outer sides of the far ends of the first mounting rod and the second mounting rod; Clamping plates are arranged on both side surfaces of the limiting rod, and the inner side surfaces of adjacent two clamping plates are in contact with the outer side surfaces of the adjacent reinforcing bars.

[0008] Preferably, the first workpiece has a U-shaped structure, the right-angle sides of the reinforcing ribs are in contact with the inner side surface of the first workpiece, and the front and rear reinforcing ribs are in a symmetrical state.

[0009] By adopting the above technical solution, through the welding of the reinforcing ribs, the support for the first workpiece can be increased, and thus the situation of stress bending of the first workpiece during operation can be avoided.

[0010] Preferably, the right side of the first mounting rod has a U-shaped structure, the left side of the second mounting rod has a convex structure, and cylinders are symmetrically and rotatably mounted on the outer side surface of the end where the first mounting rod and the second mounting rod are rotatably connected.

[0011] By adopting the above technical solution, under the action of the U-shaped structure and the convex structure, the first mounting rod and the second mounting rod can be rotatably connected. Furthermore, under the action of the rotational connection, the first mounting rod and the second mounting rod can be folded together. It should be noted that after folding, it presents a triangular structure. Moreover, during use, damping devices and the like are adopted at the position where the first mounting rod and the second mounting rod are rotatably connected, so as to avoid the situation that the first mounting rod and the second mounting rod rotate automatically during operation.

[0012] Preferably, threaded holes are opened at the ends of the front and rear cylinders away from each other towards the inside, first threaded rods are rotatably mounted inside the threaded holes, the ends of the front and rear first threaded rods away from each other are located outside the threaded holes, and the outer ends of the first threaded rods are in contact with the inner side surface of the first workpiece.

[0013] By adopting the above technical solution, the threaded holes can be rotatably connected to the first threaded rods. And during operation, rotating the first threaded rods can be in close contact with the inner side surface of the first workpiece. After fitting, it can ensure that the first mounting rod and the second mounting rod are in a fixed state and will not move or be asymmetric during subsequent operations.

[0014] Preferably, scale grooves are transversely opened at the positions of the upper end surfaces of the first mounting rod and the second mounting rod at the edges, and the scale grooves on the upper end surfaces of the first mounting rod and the second mounting rod are in a symmetrical state.

[0015] By adopting the above technical solution, under the action of the scale grooves, when the operator moves the first sliding table, he can clearly know how much it has slid, and thus can make the left-right and front-back in a symmetrical state, so as to symmetrically weld the reinforcing ribs to be positioned during operation.

[0016] Preferably, first sliding grooves are formed on the front and rear sides of the first mounting rod and the second mounting rod, first sliding platforms are slidably mounted inside the first sliding grooves, the first sliding platforms are matched with the first sliding grooves, and one ends of the outer sides of the first sliding platforms are rotatably mounted with rotating rods.

[0017] By adopting the above technical solution, the rotating rods can be driven to rotate synchronously under the action of the first sliding grooves and the first sliding platforms, and the subsequent limiting rods can be driven to adjust their positions synchronously during the rotation operation, so as to cope with the welding of the reinforcing ribs at different positions.

[0018] Preferably, first U-shaped frames are rotatably mounted at the ends of the rotating rods away from the first sliding platforms, and the first sliding platforms can drive the first U-shaped frames to slide.

[0019] Preferably, a cavity rod is rotatably mounted inside the inner side of the end of the first U-shaped frame away from the rotating rod, a sliding rod is slidably mounted inside the cavity rod, and one end of the sliding rod away from the cavity rod is located outside the cavity rod.

[0020] By adopting the above technical solution, the sliding rod can be made to slide under the action of the cavity rod and the sliding rod, and during the sliding process, the position of the subsequent limiting rod can be changed, so that the distance between the limiting rod and the reinforcing rib during the subsequent operation can be changed, thereby coping with the reinforcing ribs at different positions.

[0021] Preferably, one end of the outer side of the sliding rod away from the cavity rod is rotatably connected to the limiting rod, an adjusting gear is fixedly mounted on one end of the outer side of the limiting rod, a ratchet is rotatably mounted on one end of the outer side of the sliding rod, and the ratchet is engaged with the adjusting gear.

[0022] By adopting the above technical solution, the limiting rod can be driven to rotate synchronously under the action of the adjusting gear, and during the synchronous rotation process, the limiting rod can be inclined, so as to be horizontal with the inclined surface of the reinforcing rib, so that the reinforcing rib can be positioned in the subsequent operation.

[0023] Preferably, second sliding grooves are formed on both sides of the limiting rod, second sliding platforms are slidably mounted inside the second sliding grooves, the inner sides of the second sliding platforms are rotatably connected to the clamping plates, springs are arranged on both sides of the clamping plates, uniformly arranged second threaded rods are fixedly mounted on the outer side surfaces of the limiting rods, and fixing threaded rods are rotatably mounted inside the second threaded rods, and the outer side surfaces of the fixing threaded rods can be closely attached to the inclined surfaces of the reinforcing ribs.

[0024] By adopting the above technical solution, the second sliding table can drive the clamping plate to slide. Therefore, the clamping plate can position and fix the reinforcing rib, and further ensure that the reinforcing rib is in a symmetrical state. Then, under the action of the fixing threaded rod, the reinforcing rib can be further fixed, thus ensuring subsequent welding without the need to move the clamping device.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, the first mounting rod and the second mounting rod can drive the subsequent structure to operate. Then, under the action of the first threaded rod and the threaded hole, the positions of the first mounting rod and the second mounting rod can be adjusted, so that the first mounting rod and the second mounting rod can be located at the center position of the inner bottom surface of the first workpiece. Secondly, under the action of the first sliding table, the rotating rod can be driven to move, and the rotating rod drives the subsequent limiting rod to slide. And under the action of the scale groove, the front and rear two limiting rods can be in a symmetrical state, which can ensure that during subsequent welding, the front and rear reinforcing ribs can be in a symmetrical state without dislocation, thus ensuring the welding effect.

[0026] 2. In the present invention, under the action of the second threaded rod and the fixing threaded rod, the side surface of the reinforcing rib can be fitted, so that the right-angle side of the reinforcing rib and the inner side surface of the first workpiece can be in a fitted state, and further the reinforcing rib and the first workpiece can be in a tightly connected state. At this time, during the welding process, there is no need to adjust the positioning device again, so that the operator can weld multiple reinforcing ribs at one time.

[0027] 3. In the present invention, the clamping plate can further position the reinforcing rib. Secondly, during the operation process, the distance between the left and right first sliding tables can be adjusted according to the situation, so as to be applicable to the welding of different reinforcing ribs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 is the main structure diagram of the present invention; Figure 2 is the structure diagram of the first workpiece and the reinforcing rib of the present invention; Figure 3 is the rotational connection diagram of the first mounting rod and the second mounting rod of the present invention; Figure 4 Schematic diagram of the threaded hole and the first threaded rod of the present invention; Figure 5 Schematic diagram of the connection between the limiting rod and the clamping plate of the present invention; Figure 6 Structural diagram of the second chute and the second sliding table of the present invention; Figure 7 Schematic diagram of the second threaded rod and the fixed threaded rod of the present invention; Figure 8 Structural diagram of the sliding connection between the cavity rod and the sliding rod of the present invention.

[0030] Explanation of reference numerals: 1. First workpiece; 2. Reinforcing rib; 3. First mounting rod; 4. Second mounting rod; 5. First chute; 6. Scale groove; 7. Cylinder; 701. Threaded hole; 8. First threaded rod; 9. First U-shaped frame; 901. First sliding table; 902. Rotating rod; 10. Cavity rod; 11. Sliding rod; 12. Pawl; 13. Limiting rod; 14. Adjusting gear; 15. Second chute; 16. Second threaded rod; 17. Fixed threaded rod; 18. Second sliding table; 19. Clamping plate. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1 to 8 , the present invention provides a technical solution: A double swing arm type equidistant positioning device for reinforcing rib welding in construction, including a first workpiece 1. The first workpiece 1 has a U-shaped structure, and a reinforcing rib 2 is provided on the inner side surface of the first workpiece 1, as Figure 2 shown.

[0033] Among them, the structure of the reinforcing rib 2 is a triangular structure, and the two right-angled sides of the reinforcing rib 2 and the inner side surface and the bottom surface of the first workpiece 1 are in a tightly fitting state.

[0034] Then, a first mounting rod 3 is provided on the inner bottom surface of the first workpiece 1. The right side of the first mounting rod 3 is of a U-shaped structure, and a second mounting rod 4 is rotatably mounted inside the U-shaped structure. It should be noted that the left side of the second mounting rod 4 is of a convex structure, and the length of the second mounting rod 4 is equal to the length of the first mounting rod 3, as Figure 3 shown.

[0035] Subsequently, on the front and rear end faces on both sides of the position where the first mounting rod 3 and the second mounting rod 4 are rotatably connected, symmetrically arranged upper and lower connecting plates are fixedly mounted. And a cylinder 7 is rotatably mounted inside the inner sides of two adjacent upper and lower connecting plates. It should be noted that the position where the cylinder 7 is rotatably connected to the connecting plate is rotatably connected using a damping device. Under the action of the damping rotation, the cylinder 7 can be prevented from rotating by itself.

[0036] When it is necessary to manually adjust the state of the cylinder 7 during the operation process, from the horizontal state to the vertical state. Then, a threaded hole 701 is opened from the end of the cylinder 7 far away from the first mounting rod 3 to the inside, and a first threaded rod 8 is rotatably mounted from the inside to the outside of the threaded hole 701. It should be noted that during the operation process, the operator needs to first adjust the state of the cylinder 7, and then manually rotate the first threaded rod 8 (it should be explained that in order to improve the operation efficiency, a motor can be fixedly mounted inside the cylinder 7 close to the first mounting rod 3. A reciprocating screw is fixedly mounted on the output shaft of the motor, and the reciprocating screw is in threaded rotation connection with the first threaded rod 8, so that rapid operation can be carried out during the operation process, so that the end of the first threaded rod 8 far away from the first mounting rod 3 can be further away, so that the first threaded rod 8 can be closely attached to the inner side surface of the first workpiece 1, so that the first mounting rod 3 and the second mounting rod 4 are in a fixed state. However, this method needs to be designed according to more actual situations. Therefore, whether to design the motor and then the reciprocation specifically needs to be combined with the specific situation and the actual use state). Manually rotating the first threaded rod 8 can make the end of the first threaded rod 8 far away from the first mounting rod 3 fit with the inner side surface of the first workpiece 1 to form a fixed state.

[0037] Secondly, first sliding grooves 5 are opened on the front and rear side surfaces of the first mounting rod 3 and the second mounting rod 4. In addition, scale grooves 6 are opened on the front and rear side edges of the upper end surfaces of the first mounting rod 3 and the second mounting rod 4, as Figure 3 shown.

[0038] A first sliding table 901 is slidably mounted inside the first sliding groove 5. It should be noted that the first sliding groove 5 is of a convex structure, and the first sliding table 901 and the first sliding groove 5 are in a matching state. Therefore, during subsequent use, the situation where the first sliding table 901 continuously drops from the inside of the first sliding groove 5 will not occur.

[0039] Then, during the subsequent operation, when the operator slides the first sliding table 901, under the action of the upper end face scale grooves 6 of the first mounting rod 3 and the second mounting rod 4, the moving distances of the two front and rear first sliding tables 901 and the two lateral first sliding tables 901 can be in the same state. Furthermore, it can be ensured that whether it is the two front and rear or the two left and right first sliding tables 901, the sliding distances under the action of the scale grooves 6 can be in the same state, as Figure 3 shown.

[0040] Then, at one end of the first sliding table 901 located outside the first sliding groove 5, a rotating rod 902 is rotatably installed. At the end of the rotating rod 902 away from the first sliding table 901, a first U-shaped frame 9 is rotatably installed. It should be noted that damping devices are used at the positions where the rotating rod 902 is rotatably connected to the first sliding table 901 and the first U-shaped frame 9. Therefore, during the operation, the first U-shaped frame 9 will not rotate by itself. Only under manual adjustment by the operator can the cavity rod 10 rotate, as Figure 5 shown.

[0041] Then, the end of the cavity rod 10 away from the rotating rod 902 is a cavity structure inside. And a sliding rod 11 is slidably installed inside the cavity structure from the inside to the outside. The sliding rod 11 is in a matching state with the cavity structure. And due to the friction between the sliding rod 11 and the cavity rod 10, during use, the sliding rod 11 will not slide by itself. The operator can only manually pull and draw the sliding rod 11 during the operation. Therefore, the sliding rod 11 can slide inside the cavity rod 10, thereby changing the overall length of the cavity rod 10 and the sliding rod 11, as Figure 8 shown.

[0042] Then, a limiting rod 13 is rotatably installed on the outside of the end of the sliding rod 11 away from the cavity rod 10. A regulating gear 14 is fixedly installed on one side of the limiting rod 13. And a pawl 12 is rotatably installed beside the regulating gear 14 at the end of the sliding rod 11 away from the cavity rod 10. The pawl 12 is in a meshing state with the regulating gear 14, as Figure 5 shown.

[0043] Then, during the operation, when the operator rotates the limit rod 13, the adjusting gear 14 will rotate synchronously. During the rotation of the adjusting gear 14, its pawl 12 will not restrict the operation of the adjusting gear 14, so that the limit rod 13 can rotate. After the limit rod 13 stops operating, due to the restriction of the pawl 12, the adjusting gear 14 cannot rotate, and further the limit rod 13 will not rotate by itself. After the limit rod 13 rotates, it can be in a horizontal state with the inclined surface of the reinforcing rib 2. Under the action of the sliding rod 11, the position of the limit rod 13 can be changed, so as to ensure that the limit rod 13 can be applicable to the first workpiece 1 with different internal widths during subsequent operations, and further the limit rod 13 can always maintain a horizontal state with the hypotenuse of the reinforcing rib 2.

[0044] Then, second sliding grooves 15 are formed on both side surfaces of the limit rod 13, and second sliding platforms 18 are slidably installed at both inner ends of the second sliding groove rod 15. One ends of the second sliding platforms 18 located outside the second sliding grooves 15 are all in a U-shaped structure, as Figure 6 shown. Then, a clamping plate 19 is rotatably installed inside the U-shaped structure. The clamping plate 19 is generally in a U-shaped structure, and the position where the clamping plate 19 is rotatably connected to the second sliding platform 18 is connected by a return spring, so that the clamping plate 19 can clamp and limit the subsequent inner reinforcing rib 2 under the action of the return spring, and further ensure that the reinforcing rib 2 is in a fixed state, as Figure 1 shown.

[0045] Then, a second threaded rod 16 is fixedly installed on the outer side surface of the limit rod 13 according to the length of the limit rod 13. A fixed threaded rod 17 is rotatably installed from the inside to the outside of the second threaded rod 16. During the operation of the fixed threaded rod 17, it can be in close fit with the inclined surface of the reinforcing rib 2, so as to further make the reinforcing rib 2 in close fit with the inner side surface of the first workpiece 1, as Figure 1 shown.

[0046] Working principle: First, place the first mounting rod 3 and the second mounting rod 4 on the inner bottom surface of the first workpiece 1. Then, rotate the first threaded rod 8. At this time, after the front and rear first threaded rods 8 rotate, the ends away from the cylinder 7 can be in a state of being in contact with the inner side surface of the first workpiece 1.

[0047] According to the situation, place the reinforcing rib 2 in the required position. Secondly, determine whether to slide the sliding rod 11 according to the situation. The sliding rod 11 drives the limit rod 13 to move synchronously.

[0048] Then, the limit rod 13 drives the adjusting gear 14 to rotate until it reaches a horizontal state with the reinforcing rib 2. The adjusting gear 14 limits the limit rod 13 under the action of the pawl 12.

[0049] In addition, when deciding whether to slide the first sliding table 901 according to the situation, the first sliding table 901 will drive the rotating rod 902 to rotate. The rotating rod 902 drives the cavity rod 10 to move synchronously, the cavity rod 10 drives the sliding rod 11 to move, and the sliding rod 11 drives the limiting rod 13 to operate synchronously.

[0050] Then, rotate the clamping plate 19 to clamp the reinforcing rib 2, so that the reinforcing rib 2 can be in the first fixed state.

[0051] Then, rotate the fixing threaded rod 17 according to the situation. The fixing threaded rod 17 closely fits with the inclined surface of the reinforcing rib 2, so that the reinforcing rib 2 and the first workpiece 1 can be in a closer state.

[0052] Subsequently, the user can observe the scale groove 6 to ensure that the position of the reinforcing rib 2 on the first workpiece 1 is accurate and error-free, achieving the equidistant effect required by the design.

[0053] At this time, the first mounting rod 3 and the second mounting rod 4 play a role in supporting and positioning, ensuring the stability of the reinforcing rib 2 in the horizontal direction.

[0054] Next, the user can start the welding equipment to weld the contact part of the reinforcing rib 2 and the first workpiece 1. Since the reinforcing rib 2 has been fixed in the predetermined position, there is no need to worry about the movement or misalignment of the reinforcing rib 2 during the welding process, thus ensuring the welding quality and efficiency.

[0055] After welding is completed, the user can loosen the clamping plate 19 and then reverse-rotate the fixing threaded rod 17 to separate the fixing threaded rod 17 from the inclined surface of the reinforcing rib 2.

[0056] At this time, the sliding rod 11 can be slid to reset the limiting rod 13 and the adjusting gear 14 together to prepare for the next positioning operation.

[0057] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A double swing arm equidistant positioning device for welding reinforcement bars for construction, characterized in that: It comprises a first workpiece (1), wherein vertical reinforcing ribs (2) are fitted on the inner left and right side surfaces of the first workpiece (1); A first mounting rod (3) and a second mounting rod (4) are arranged on the inner surface of the first workpiece (1), and adjacent ends of the first mounting rod (3) and the second mounting rod (4) are rotatably connected; Limiting rods (13) are symmetrically arranged on the outer sides of the ends of the first mounting rod (3) and the second mounting rod (4) that are away from each other; Clamping plates (19) are provided on both side surfaces of the limiting rod (13), and the inner side surfaces of two adjacent clamping plates (19) are in contact with the outer side surfaces of adjacent reinforcing ribs (2).

2. The double swing arm equidistant positioning device for welding reinforcement bars for construction according to claim 1, characterized in that: The first workpiece (1) is in a U-shaped structure, the right-angled side of the reinforcing rib (2) and the inner side surface of the first workpiece (1) are in a fitted state, and the front and rear reinforcing ribs (2) are in a symmetrical state.

3. The double swing arm equidistant positioning device for welding reinforcement bars for construction according to claim 1, characterized in that: The right side of the first mounting rod (3) is a U-shaped structure, the left side of the second mounting rod (4) is a convex structure, and a cylinder (7) is symmetrically rotatably mounted on the outer surface of one end where the first mounting rod (3) and the second mounting rod (4) are rotatably connected.

4. The double swing arm equidistant positioning device for welding reinforcement bars for construction according to claim 3, characterized in that: A threaded hole (701) is provided inside the two front and rear cylinders (7) at ends away from each other, a first threaded rod (8) is rotatably mounted inside the threaded hole (701), the two front and rear first threaded rods (8) at ends away from each other are located outside the threaded hole (701), and one end outside the first threaded rod (8) is in contact with the inner side surface of the first workpiece (1).

5. The double swing arm equidistant positioning device for welding reinforcement bars for construction according to claim 1, characterized in that: The upper end surfaces of the first mounting rod (3) and the second mounting rod (4) are laterally provided with scale grooves (6) at the edge positions, and the scale grooves (6) on the upper end surfaces of the first mounting rod (3) and the second mounting rod (4) are in a symmetrical state.

6. The double swing arm equidistant positioning device for welding reinforcement bars for construction according to claim 5, characterized in that: The first mounting rod (3) and the second mounting rod (4) are both provided with first sliding grooves (5) on both the front and rear side surfaces, and a first slide table (901) is slidably installed inside the first sliding groove (5), the first slide table (901) matches the first sliding groove (5), and a rotating rod (902) is rotatably installed at one end of the outer side of the first slide table (901).

7. A double swing arm equidistant positioning device for welding reinforcement bars for construction according to claim 6, characterized in that: The first U-shaped frame (9) is rotatably mounted on one end of the rotating rod (902) away from the first slide (901), and the first slide (901) can slide with the first U-shaped frame (9).

8. The double swing arm equidistant positioning device for welding reinforcement bars for construction according to claim 1, characterized in that: A cavity rod (10) is rotatably mounted on the inner side of one end of the first U-shaped frame (9) away from the rotating rod (902), a sliding rod (11) is slidably mounted inside the cavity rod (10), and one end of the sliding rod (11) away from the cavity rod (10) is located on the outer side of the cavity rod (10).

9. The double swing arm equidistant positioning device for welding reinforcement bars for construction according to claim 8, characterized in that: The outer side of one end of the slide rod (11) away from the cavity rod (10) is rotatably connected to the limit rod (13), an outer side end of the limit rod (13) is fixedly mounted with an adjustment gear (14), and an outer side end of the slide rod (11) is rotatably mounted with a ratchet (12), and the ratchet (12) is meshed with the adjustment gear (14).

10. The double swing arm equidistant positioning device for welding reinforcement bars for construction according to claim 9, characterized in that: Second slide grooves (15) are provided on both side surfaces of the limit rod (13); a second slide table (18) is slidably mounted inside the second slide groove (15); the inner side of the second slide table (18) is rotatably connected to a clamping plate (19), and springs are arranged on both sides of the clamping plate (19); evenly arranged second threaded rods (16) are fixedly mounted on the outer side surface of the limit rod (13); fixed threaded rods (17) are rotatably mounted inside the second threaded rods (16); and the outer side surface of the fixed threaded rod (17) can be tightly fitted with the inclined surface of the reinforcing rib (2).

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