Municipal guardrail welding and positioning tool

Abstract

The utility model discloses a municipal guardrail welding positioning tool, which belongs to the field of guardrail welding, and comprises a bracket used for placing a cross rod and a vertical rod, the bracket comprises a cross beam, and two sides of the cross beam are respectively provided with a plurality of support arms used for supporting the cross rod; end plates are arranged at two ends of the cross beam; a rotating shaft is arranged on one side of each end plate; the mounting height of the bracket is greater than the distance between the outer edges of two cross rods of the guardrail; the supports are arranged at the two ends of the bracket, and the rotating shafts are rotationally installed on the supports; the clamps are mounted on the bracket and used for clamping the vertical rods; and the positioning seats are mounted on the supporting arms and are used for supporting and positioning the cross rod. By turning over the bracket, double-sided welding of the guardrail is completed through one-time clamping, the clamping times during guardrail welding are reduced, the labor intensity of operators is reduced, the production efficiency is improved, and meanwhile, the stability and consistency of product quality are ensured.

Description

Technical Field

[0001] The utility model belongs to the field of guardrail welding, and particularly relates to a municipal guardrail welding positioning tool. Background Art

[0002] In modern urban construction, municipal guardrails, as an important part of road safety facilities, not only bear the basic functions of separating roads and guiding traffic flow, but also play the role of beautifying urban landscapes and improving the quality of public spaces. Metal guardrails have become the mainstream choice of municipal guardrails due to their high strength, good corrosion resistance, and easy maintenance. This type of guardrail is usually composed of horizontal bars (also called main bars) and vertical bars (or risers), which are connected together through precise welding technology to form a stable and beautiful structure.

[0003] In the production process of metal guardrails, welding is a crucial link, which is directly related to the overall strength, stability and service life of the guardrails. In the traditional metal guardrail welding process, tooling fixtures on the welding table are generally used to fix the various parts of the guardrail.

[0004] However, existing welding fixtures face a series of challenges in practical applications. First, after welding one side of the guardrail, the entire guardrail must be flipped over and re-clamped in order to weld the other side. This flipping process is not only cumbersome and reduces the efficiency of guardrail welding, but also the repositioning and clamping after each flip may introduce errors, affecting the accuracy of the secondary clamping, and thus affecting the quality of guardrail welding, especially the welding quality during robot welding and the overall stability of the guardrail.

[0005] Secondly, frequent clamping and flipping operations require high physical strength from the operator, and long-term operation can easily lead to fatigue, affecting work efficiency and safety. In addition, multiple clamping may also cause scratches or deformation on the surface of the guardrail, reducing the appearance quality of the product. Utility Model Content

[0006] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a municipal guardrail welding positioning tool, which realizes double-sided welding of the guardrail in one clamping through the flipping of the bracket, and solves the problems of high labor intensity, low welding efficiency and poor precision caused by manual flipping and secondary clamping during guardrail welding in the prior art.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A municipal guardrail welding positioning tool, comprising:

[0009] The bracket is used to place the horizontal bar and the vertical bar. The bracket includes a horizontal beam, and a plurality of bracket arms for supporting the horizontal bar are respectively arranged on both sides of the horizontal beam; end plates are arranged at both ends of the horizontal beam, and a rotating shaft is arranged on one side of the end plate; the installation height of the bracket is higher than the distance between the outer edges of the two horizontal bars of the guardrail;

[0010] Brackets are arranged at both ends of the bracket, and the rotating shaft is rotatably mounted on the brackets;

[0011] A plurality of clamps are installed on the bracket and used for clamping the vertical rods. The clamps include a U-shaped bottom plate, a plurality of guide rods are fixedly connected inside the U-shaped bottom plate, a bottom bracket is connected between two guide rods, and two sets of clamps are slidably connected to the guide rods; a spring is sleeved outside the guide rod, one end of the spring abuts against the clamp, and the other end of the spring abuts against the inner wall of the U-shaped bottom plate;

[0012] A plurality of positioning seats are installed on the supporting arm and are used to support and position the crossbar. The positioning seats include a standing seat and a supporting plate. The side wall of the crossbar abuts against the inner wall of the standing seat for positioning the crossbar, and the supporting plate is used to support the crossbar.

[0013] Furthermore, a flared end is provided at the upper end of the clamping plate, and the flared ends of the two clamping plates form a V-shaped structure with a larger opening at the upper end and a smaller opening at the lower end.

[0014] Furthermore, an arc-shaped portion is provided in the middle of the clamping plate, and an arc-shaped groove is provided in the upper portion of the base.

[0015] Furthermore, the lower end of the stand is slidably mounted on the support arm for adjusting the position of the stand on the support arm, and the lower end of the stand is threadedly connected with a first positioning bolt for fixing the stand; the support plate is slidably mounted on the stand, and a second positioning bolt is threadedly connected with one side of the support plate for adjusting the height of the support plate.

[0016] Furthermore, a guide rail is provided on the upper portion of the crossbeam, and a slider is connected to the lower portion of the clamp, and the slider is slidably connected to the guide rail.

[0017] Furthermore, it also includes an adjustment mechanism, which includes a scissor-type telescopic frame, a connecting shaft is provided at the middle connection point of the scissor-type telescopic frame, a through groove is provided in the middle of the crossbeam, the connecting shaft is arranged in the through groove, and the upper end of the connecting shaft is fixedly connected to the clamp; one end of the scissor-type telescopic frame is connected to the end plate, and the other end of the scissor-type telescopic frame is connected to a connecting plate, and one side of the connecting plate is connected to a screw rod through a bearing seat; one end of the crossbeam is provided with an adjustment frame, the screw rod is threadedly connected to the side wall of the adjustment frame, and one end of the screw rod is provided with a handwheel.

[0018] Furthermore, positioning holes are provided on the upper and lower parts of one side of the adjustment frame, and a stepped hole is provided on the upper part of the bracket. A positioning pin is slidably connected in the stepped hole, and a pull ring is provided at one end of the positioning pin. A tension spring is provided on the outer sleeve of the positioning pin, and one end of the tension spring is connected to the stepped hole, and the other end of the tension spring is connected to the end of the positioning pin; after the bracket is flipped over, the positioning pin is inserted into the positioning hole.

[0019] Furthermore, the bracket includes a fixed frame with a hollow structure and a telescopic plate slidably arranged inside the fixed frame, the telescopic plate and the fixed frame are connected via a height adjustment device, the height adjustment device includes a plurality of equidistant adjustment holes arranged on the telescopic plate and an adjustment bolt arranged on the fixed frame, the adjustment bolt is connected to the adjustment holes at different positions to adjust the height of the bracket; or, the height adjustment device includes a hydraulic cylinder, a cylinder seat of the hydraulic cylinder is installed at the bottom of the fixed frame, and a piston rod of the hydraulic cylinder is connected to the telescopic plate; or, the height adjustment device includes a scissor-type lifting frame, the lower end of the scissor-type lifting frame is connected to the fixed frame, and the upper end of the scissor-type lifting frame is connected to the telescopic plate.

[0020] The beneficial effects of the utility model are:

[0021] 1) The utility model realizes double-sided welding of the guardrail in one clamping by flipping the bracket, which reduces the number of clamping times during guardrail welding, reduces the labor intensity of operators, improves production efficiency, and ensures the stability and consistency of product quality.

[0022] 2) Springs are set on both sides of the clamp to realize automatic clamping of the vertical rod and reduce manual intervention. It not only improves the efficiency of vertical rod clamping, but also is suitable for clamping vertical rods of different sizes, enhancing the versatility and flexibility of the clamp.

[0023] 3) A flared end is provided at the upper end of the clamping plate to facilitate quick clamping of the vertical rod. In addition, an arc portion is provided in the middle of the clamping plate and an arc groove is provided on the upper part of the bottom support to enhance the stability of clamping when the vertical rod is a round tube.

[0024] 4) The stand of the positioning seat is slidably mounted on the support arm, so that the position of the stand can be adjusted according to the height of the guardrail. The support plate is slidably connected to the stand, so that the height of the support plate on the stand can be adjusted according to the size of the crossbar.

[0025] 5) A guide rail and an adjustment mechanism are arranged on the upper part of the beam. The adjustment mechanism adopts a scissor-type telescopic frame structure, which realizes the synchronous adjustment of multiple fixtures and ensures the consistency of the spacing after the fixtures are adjusted.

[0026] 6) Positioning holes are set on both sides of the adjustment frame, and positioning pins are set on the upper part of the bracket. After the bracket is flipped, the positioning pins are inserted into the positioning holes, which prevents the bracket from being rotated by external force during the welding process of the guardrail and ensures the stability of the bracket after flipping.

[0027] 7) The bracket adopts a height-adjustable structure, which makes it easy to adjust the height of the bracket according to the height of the guardrail or the height and operating habits of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The utility model is a use status diagram of a municipal guardrail welding positioning tool.

[0029] Figure 2 The utility model is a schematic diagram of a municipal guardrail welding positioning tool structure.

[0030] Figure 3 It is a schematic diagram of the bracket structure.

[0031] Figure 4 It is a schematic diagram of the positioning seat structure.

[0032] Figure 5 It is a schematic diagram of the adjustment structure.

[0033] Figure 6 It is a schematic diagram of the assembly of the screw rod and the adjusting frame.

[0034] Figure 7 It is a schematic diagram of the fixture structure.

[0035] Figure 8 It is a schematic diagram of the bracket structure.

[0036] Fig. 9 yes Figure 8 Enlarged view of point A in the middle.

[0037] Fig.10 It is the guardrail flip state diagram.

[0038] In the figure, 1, bracket; 11, fixing frame; 12, telescopic plate; 13, adjusting hole; 14, tension spring; 15, positioning pin; 16, pull ring; 17, adjusting bolt; 2, bracket; 21, crossbeam; 22, support arm; 23, guide rail; 24, adjusting frame; 25, positioning hole; 26, rotating shaft; 27, end plate; 3, clamp; 31, U-shaped bottom plate; 32, clamping plate; 321, arc-shaped part; 322, flared end; 33, guide rod; 34, bottom support; 35, spring; 36, slider; 4, positioning seat; 41, stand; 42, first positioning bolt; 43, support plate; 44, second positioning bolt; 5, adjusting mechanism; 51, scissor-type telescopic frame; 52, connecting shaft; 53, connecting plate; 54, screw rod; 55, handwheel. DETAILED DESCRIPTION

[0039] The following will be combined with the attached Figure 1-Figure 10, clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] like Figure 1 , Figure 2 As shown, a municipal guardrail welding positioning tool comprises a bracket 2, a support 1, a plurality of clamps 3 and a positioning seat 4, wherein the bracket 2 is used to place the horizontal bar and the vertical bar. Figure 3 As shown, the bracket 2 includes a crossbeam 21, and a plurality of bracket arms 22 for supporting the crossbars are respectively provided on both sides of the crossbeam 21; end plates 27 are provided at both ends of the crossbeam 21, and a rotating shaft 26 is provided on one side of the end plate 27; the installation height of the bracket 2 is higher than the distance between the outer edges of the two crossbars of the guardrail to avoid collision with the ground when the guardrail is turned over, thereby ensuring smooth turning of the guardrail;

[0042] like Figure 2 As shown, the bracket 1 is arranged at both ends of the bracket 2, and the rotating shaft 26 is rotatably mounted on the bracket 1 to facilitate the flipping of the bracket 2; the clamp 3 is mounted on the bracket 2 to clamp the vertical rod to prevent the vertical rod from shifting when the guardrail is welded; Figure 7 As shown, the clamp 3 includes a U-shaped bottom plate 31, a plurality of guide rods 33 are fixedly connected inside the U-shaped bottom plate 31, a bottom bracket 34 is connected between two guide rods 33, and two groups of clamps 32 are slidably connected to the guide rods 33; a spring 35 is sleeved on the outside of the guide rods 33, one end of the spring 35 is against the clamp 32, and the other end of the spring 35 is against the inner wall of the U-shaped bottom plate 31. When the vertical rod is placed between the two clamps 32, the elastic force of the spring 35 will push the clamp 32 to slide along the guide rod 33, thereby realizing automatic clamping of the vertical rod and reducing manual intervention. This not only improves the efficiency of clamping the vertical rod, but is also suitable for clamping vertical rods of different sizes, thereby enhancing the versatility and flexibility of the clamp 3.

[0043] like Figure 3 As shown, the positioning seat 4 is installed on the support arm 22 to support and position the crossbar; Figure 4 As shown, the positioning seat 4 includes a stand 41 and a support plate 43. The side wall of the crossbar abuts against the inner wall of the stand 41 for positioning the crossbar, and the support plate 43 is used to support the crossbar.

[0044] like Figure 1 As shown, when welding the guardrail, the vertical bar of the guardrail is placed in the clamp 3 and clamped, the cross bar of the guardrail is placed on the positioning seat 4, and the two ends of the vertical bar are abutted against the side walls of the cross bar, and then welding is performed using a robot or manually; when the welding of one side of the guardrail is completed, the bracket 2 is moved, and since the rotating shafts 26 at both ends of the bracket 2 are rotatably connected to the bracket 1, the bracket 2 rotates together with the guardrail, so that the guardrail is turned over to the unwelded side, and then the unwelded side of the guardrail can be welded, thereby achieving double-sided welding of the guardrail with one clamping, reducing the number of clamping times during guardrail welding, reducing the labor intensity of operators, improving production efficiency, and ensuring the stability and consistency of product quality.

[0045] like Figure 7 As shown, the upper end of the clamping plate 32 is provided with a flared end 322, and the flared ends 322 of the two clamping plates 32 form a V-shaped structure with a large opening at the upper end and a small opening at the lower end, which is convenient for rapid clamping of the vertical rod.

[0046] like Figure 7 As shown, the middle of the clamp 32 is provided with an arc portion 321, and the upper portion of the base 34 is provided with an arc groove. When the vertical rod is a round tube, the arc portion 321 of the clamp 32 and the arc groove on the base increase the contact area of ​​the clamp 3 with the round tube, thereby ensuring the stability of the round tube clamping.

[0047] like Figure 4 As shown, the lower end of the stand 41 is slidably mounted on the support arm 22, which is used to adjust the position of the stand 41 on the support arm 22, and the lower end of the stand 41 is threadedly connected with a first positioning bolt 42 for fixing the stand 41; the support plate 43 is slidably mounted on the stand 41, and one side of the support plate 43 is threadedly connected with a second positioning bolt 44, which is convenient for adjusting the height of the support plate 43 on the stand 41 according to the size of the cross bar.

[0048] like Figure 3 As shown, a guide rail 23 is provided on the upper portion of the crossbeam 21. Figure 7 As shown, a slider 36 is connected to the lower part of the clamp 3, and the slider 36 is slidably connected to the guide rail 23, so that the position of the slider 36 on the crossbeam 21 can be adjusted according to the design requirements of the vertical rod.

[0049] like Figure 5As shown, it also includes an adjusting mechanism 5 arranged at the lower part of the bracket 2, the adjusting mechanism 5 includes a scissor-type telescopic frame 51, a connecting shaft 52 is provided at the middle connection point of the scissor-type telescopic frame 51, a through groove is provided in the middle of the crossbeam 21, the connecting shaft 52 is arranged in the through groove, and the upper end of the connecting shaft 52 is fixedly connected to the clamp 3; one end of the scissor-type telescopic frame 51 is connected to the end plate 27, and the other end of the scissor-type telescopic frame 51 is connected to a connecting plate 53, and one side of the connecting plate 53 is connected to a screw rod 54 through a bearing seat; one end of the crossbeam 21 is provided with an adjusting frame 24, the screw rod 54 is threadedly connected to the side wall of the adjusting frame 24, and one end of the screw rod 54 is provided with a hand wheel 55; when the hand wheel 55 is turned, the screw rod 54 is driven to rotate, and then the scissor-type telescopic frame 51 is driven to extend and retract, thereby realizing the synchronous adjustment of multiple clamps 3 and ensuring the consistency of the spacing after the clamp 3 is adjusted.

[0050] like Figure 6 As shown, the upper and lower parts of one side of the adjustment frame 24 are provided with positioning holes 25. Fig. 9 As shown, a stepped hole is provided on the upper part of the bracket 1, and a positioning pin 15 is slidably connected in the stepped hole. A pull ring 16 is provided at one end of the positioning pin 15, and a tension spring 14 is sleeved on the outside of the positioning pin 15. One end of the tension spring 14 is connected to the stepped hole, and the other end of the tension spring 14 is connected to the end of the positioning pin 15; after the bracket 2 is flipped over, the positioning pin 15 is inserted into the positioning hole 25, which prevents the bracket 2 from being rotated by external force during the welding process of the guardrail, and ensures the stability of the bracket 2 after the flip.

[0051] like Figure 8 As shown, the bracket 1 includes a fixed frame 11 with a hollow structure and a telescopic plate 12 slidably arranged inside the fixed frame 11, the telescopic plate 12 is connected to the fixed frame 11 through a height adjustment device, and the height adjustment device includes a plurality of equidistant adjustment holes 13 arranged on the telescopic plate 12 and an adjusting bolt 17 arranged on the fixed frame 11, and the adjusting bolt 17 is connected to the adjustment holes 13 at different positions to achieve adjustment of the height of the bracket 1; in other embodiments, the height adjustment device includes a hydraulic cylinder, a cylinder seat of the hydraulic cylinder is installed at the bottom of the fixed frame 11, and a piston rod of the hydraulic cylinder is connected to the telescopic plate 12; or, the height adjustment device includes a scissor-type lifting frame, the lower end of the scissor-type lifting frame is connected to the fixed frame 11, and the upper end of the scissor-type lifting frame is connected to the telescopic plate 12.

[0052] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the scope defined by the structure of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A municipal guardrail welding positioning tool, characterized in that: include: A bracket (2) is used to place the crossbar and the vertical bar, the bracket (2) comprising a crossbar (21), and a plurality of bracket arms (22) for supporting the crossbar are respectively arranged on both sides of the crossbar (21); end plates (27) are arranged at both ends of the crossbar (21), and a rotating shaft (26) is arranged on one side of the end plate (27); the installation height of the bracket (2) is higher than the distance between the outer edges of the two crossbars of the guardrail; A bracket (1) is arranged at both ends of the bracket (2), and a rotating shaft (26) is rotatably mounted on the bracket (1); A plurality of clamps (3) are mounted on the bracket (2) and used for clamping the vertical rod; the clamps (3) include a U-shaped bottom plate (31), a plurality of guide rods (33) are fixedly connected inside the U-shaped bottom plate (31), a bottom bracket (34) is connected between two guide rods (33), and two groups of clamping plates (32) are slidably connected to the guide rods (33); a spring (35) is sleeved outside the guide rods (33), one end of the spring (35) is against the clamping plate (32), and the other end of the spring (35) is against the inner wall of the U-shaped bottom plate (31); A plurality of positioning seats (4) are installed on the supporting arm (22) and are used to support and position the crossbar; the positioning seats (4) include a standing seat (41) and a supporting plate (43); the side wall of the crossbar abuts against the inner wall of the standing seat (41) for positioning the crossbar, and the supporting plate (43) is used to support the crossbar.

2. A municipal guardrail welding positioning tool according to claim 1, characterized in that: The upper end of the clamping plate (32) is provided with a flared end (322), and the flared ends (322) of the two clamping plates (32) form a V-shaped structure with a larger opening at the upper end and a smaller opening at the lower end.

3. A municipal guardrail welding positioning tool according to claim 2, characterized in that: The middle part of the clamping plate (32) is provided with an arc-shaped portion (321), and the upper part of the base (34) is provided with an arc-shaped groove.

4. The municipal guardrail welding positioning tool according to claim 1 is characterized in that: The lower end of the stand (41) is slidably mounted on the support arm (22) for adjusting the position of the stand (41) on the support arm (22); the lower end of the stand (41) is threadedly connected with a first positioning bolt (42) for fixing the stand (41); the support plate (43) is slidably mounted on the stand (41); one side of the support plate (43) is threadedly connected with a second positioning bolt (44) for adjusting the height of the support plate (43).

5. The municipal guardrail welding positioning tool according to claim 1 is characterized in that: A guide rail (23) is provided on the upper portion of the crossbeam (21), and a slider (36) is connected to the lower portion of the clamp (3), wherein the slider (36) is slidably connected to the guide rail (23).

6. A municipal guardrail welding positioning tool according to claim 5, characterized in that: The invention also comprises an adjusting mechanism (5), wherein the adjusting mechanism (5) comprises a scissor-type telescopic frame (51), a connecting shaft (52) is provided at a middle connection point of the scissor-type telescopic frame (51), a through slot is provided in the middle of the cross beam (21), the connecting shaft (52) is arranged in the through slot, and the upper end of the connecting shaft (52) is fixedly connected to the clamp (3); one end of the scissor-type telescopic frame (51) is connected to the end plate (27), the other end of the scissor-type telescopic frame (51) is connected to a connecting plate (53), one side of the connecting plate (53) is connected to a screw rod (54) through a bearing seat; one end of the cross beam (21) is provided with an adjusting frame (24), the screw rod (54) is threadedly connected to the side wall of the adjusting frame (24), and one end of the screw rod (54) is provided with a hand wheel (55).

7. A municipal guardrail welding positioning tool according to claim 6, characterized in that: The upper and lower parts of one side of the adjustment frame (24) are both provided with positioning holes (25), the upper part of the bracket (1) is provided with a stepped hole, a positioning pin (15) is slidably connected in the stepped hole, one end of the positioning pin (15) is provided with a pull ring (16), the outer part of the positioning pin (15) is sleeved with a tension spring (14), one end of the tension spring (14) is connected to the stepped hole, and the other end of the tension spring (14) is connected to the end of the positioning pin (15); after the bracket (2) is turned over, the positioning pin (15) is inserted into the positioning hole (25).

8. A municipal guardrail welding positioning tool according to any one of claims 1 to 7, characterized in that: The support (1) comprises a fixed frame (11) of a hollow structure and a telescopic plate (12) slidably arranged inside the fixed frame (11); the telescopic plate (12) is connected to the fixed frame (11) via a height adjustment device; the height adjustment device comprises a plurality of equally spaced adjustment holes (13) arranged on the telescopic plate (12) and an adjustment bolt (17) arranged on the fixed frame (11); the adjustment bolt (17) is connected to the adjustment holes (13) at different positions to achieve height adjustment of the support (1); or, the height adjustment device comprises a hydraulic cylinder, a cylinder seat of the hydraulic cylinder is mounted at the bottom of the fixed frame (11), and a piston rod of the hydraulic cylinder is connected to the telescopic plate (12); or, the height adjustment device comprises a scissor-type lifting frame, a lower end of the scissor-type lifting frame is connected to the fixed frame (11), and an upper end of the scissor-type lifting frame is connected to the telescopic plate (12).

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