A welding tool for a guardrail upper end post pipe body and a support
Patent Information
- Application Number
- CN202522051008.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-24
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-09-24
AI Technical Summary
若焊接过程中焊接位置出现歪斜，会导致后期顶部栏杆无法顺利卡入托件或安装后护栏整体结构不稳定，严重影响护栏的装配效率和使用性能
本实用新型一种护栏上端立柱管体与托件的焊接工装解决了现有技术中护栏上端立柱管体与托件焊接时定位精度低、焊接位置易歪斜的缺陷，本实用新型通过合理的结构设计，实现管体与托件的精准定位，确保焊接位置稳定，提高焊接质量和加工效率。
Smart Images
Figure CN224688328U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding fixture technology, and in particular to a welding fixture for the upper post tube and support of a guardrail. Background Technology
[0002] In the production and processing of guardrails, the upper post is a crucial component. Its structure includes a tube fixed to the post and a support fixed above the tube. The tube consists of a straight section extending vertically and a curved section positioned above the straight section. The curved section is welded to one side of the support. The support has an arc-shaped structure with mounting holes, allowing the top railing of the guardrail to be inserted into the support and secured through these holes.
[0003] In the actual processing of the upper posts of the guardrail, the welding quality of the bent pipe section and the support directly determines the accuracy of the subsequent guardrail installation. If the welding position is skewed during the welding process, it will cause the top railing to fail to be properly inserted into the support later or the overall structure of the guardrail to be unstable after installation, seriously affecting the assembly efficiency and performance of the guardrail. However, the current processing lacks special tooling for positioning the pipe body and the support, and usually relies on manual support for positioning. This not only results in low positioning accuracy and poor stability, but also low welding efficiency and high labor intensity, making it difficult to meet the requirements of large-scale production for welding quality and efficiency. Utility Model Content
[0004] The purpose of this utility model is to provide a welding fixture for the upper post tube and the support component of a guardrail. Through a reasonable structural design, the fixture can achieve precise positioning of the tube and the support component, ensure stable welding position, and improve welding quality and processing efficiency.
[0005] To achieve the above objectives, this utility model provides a welding fixture for the upper post tube and support of a guardrail, including a fixing frame, on which a support positioning fixture for positioning the support and a tube positioning fixture for supporting the tube are fixed; the support positioning fixture includes a support tube fixed on the fixing frame; the axis of the support tube is horizontally set, and its diameter is the same as the diameter of the guardrail post; the support is attached to the outer wall of the support tube; the support tube is provided with a positioning protrusion that matches the mounting hole or leakage hole on the support; the mounting hole or leakage hole is a non-circular structure; the positioning protrusion is inserted into the mounting hole or leakage hole; the tube positioning fixture includes a support platform, the bottom of the tube abuts against the support platform; the upper arc groove of the tube is fastened to the side wall of the support.
[0006] With the above structure, by setting up a support positioning fixture and a pipe positioning fixture, the support pipe is used to simulate the actual assembly state of the support and the guardrail. The positioning protrusion matches the mounting hole or leakage hole of the support, which can achieve precise positioning of the support. The bottom of the pipe abuts against the support platform and the upper arc groove is fastened to the side wall of the support, which can ensure accurate welding position of the pipe and the support, and improve welding quality and efficiency.
[0007] Preferably, the mounting hole and the drain hole are elliptical in shape; the positioning protrusion is also an elliptical protrusion that matches them. Compared with a circular structure, this effectively prevents the support from rotating on the support tube, further improving the positioning stability of the support and ensuring that the position of the support does not shift during the welding process.
[0008] Preferably, the support platform includes support plates fixed to the base plate of the fixing frame and respectively disposed on both sides of the pipe body; the two support plates are symmetrically distributed along the axis of the pipe body, forming a clearance groove between them for the bottom of the pipe body to be inserted; a mounting plate in the middle of the pipe body is supported on the top surface of the support plates, and the outer side wall of the mounting plate is flush with the outer side wall of the support plates. The clearance groove formed by the two support plates provides a space for the bottom of the pipe body, while the mounting plate in the middle of the pipe body can be stably supported on the support plates, ensuring the positioning stability of the bottom of the pipe body on the support platform and preventing the pipe body from shaking during the welding process.
[0009] Preferably, the support platform includes guide rails fixed to the base plate of the fixing frame and respectively disposed on both sides of the tube body. A sliding plate is slidably mounted on the guide rail, and the sliding plate can slide along the guide rail towards or away from the support tube. An upwardly extending positioning post is provided on the sliding plate; the diameter of the positioning post is the same as the diameter of the bottom inner hole of the tube body; the positioning post is inserted into the bottom inner hole of the tube body; and its bottom abuts against the sliding plate; a limiting structure is provided between the sliding plate and the guide rail. The sliding engagement of the guide rail and the sliding plate facilitates pushing the tube body onto the support, achieving alignment between the two; the precise engagement of the positioning post and the bottom inner hole of the tube body enables rapid positioning of the bottom of the tube body; the limiting structure fixes the position of the sliding plate, preventing the tube body from shifting due to sliding of the sliding plate during welding, thus improving the positioning accuracy and stability of the tube body.
[0010] Preferably, the limiting structure includes a slot fixed on the guide rail and an insert fixed on the slide plate; the slot is located between the slide plate and the support tube, and its opening extends beyond the direction of the slide plate; the insert is fixed on the slide plate and located on one side of the slot, and the insert can be inserted into the slot by sliding the slide plate; the slot is provided with a spring pin; the insert is provided with a socket for the spring pin to be inserted; the insert is provided with a guide slope on one side of the support tube; when the insert is inserted into the slot, the guide slope contacts the bottom of the spring pin and forces the spring pin out of the slot; when the insert is fully inserted into the slot, the spring pin aligns with the socket and is inserted into the socket; the top of the spring pin is provided with a lifting end, and lifting the lifting end can pull the spring pin out of the socket, thereby unlocking. This limiting structure, through the cooperation of the insert and the slot, combined with the locking effect of the elastic pin and the socket, can quickly achieve the positioning and unlocking of the skateboard; the guide slope setting allows the insert to automatically push up the elastic pin when inserted into the slot, eliminating the need for manual operation, simplifying the operation steps and improving positioning efficiency; the lifting end design makes it convenient to quickly unlock when the position of the skateboard needs to be adjusted, making the operation convenient.
[0011] Preferably, there are two limiting structures, located on both sides of the tube body. Having limiting structures on both sides of the tube body allows for simultaneous limiting and fixing of the slide plate from both sides, further improving the stability of the slide plate's positioning and preventing uneven force distribution that could cause displacement due to unilateral limiting, thus ensuring the stability of the tube body's position during the welding process.
[0012] Preferably, the lifting ends of the limiting structures on both sides are connected by a connecting rod. Pulling the connecting rod can unlock the limiting structures on both sides simultaneously. By connecting the lifting ends of the limiting structures on both sides with the connecting rod, the operator only needs to pull the connecting rod to unlock the limiting structures on both sides at the same time, without having to operate the lifting ends on both sides separately. This simplifies the unlocking process, improves the convenience of operation, and is especially suitable for batch processing scenarios.
[0013] Preferably, the skateboard has downward-folding flanges on both sides; rollers are rotatably mounted on the flanges at the bottom of the skateboard; multiple rollers are rotatably mounted on each flange; the guide rail includes a guide rail body extending front and rear, with a guide groove inside the guide rail body; the guide groove has an opening on one side of the flange, which avoids the roller axle; the rollers are limited and roll within the guide groove. The cooperation between the flanges and the rollers allows the skateboard to slide smoothly along the guide rail, reducing frictional resistance between the skateboard and the guide rail, and facilitating the operator to adjust the position of the skateboard; the limiting effect of the guide groove on the rollers prevents the skateboard from deviating left or right during sliding, ensuring the accuracy of the skateboard's sliding direction; the opening provides clearance for the roller axle, avoiding interference between the axle and the guide rail body, ensuring normal skateboard sliding.
[0014] Preferably, an annular groove is provided in the middle of the roller surface; the top and bottom of the guide groove are respectively provided with protruding ribs that engage with the annular groove; the roller rolls along the protruding ribs. The cooperation between the annular groove and the protruding ribs can further limit the roller, prevent the roller from moving up and down in the guide groove, ensure that the slide plate remains horizontal during sliding, avoid tube positioning deviation due to slide plate tilting, and further improve the accuracy and stability of tube positioning.
[0015] After adopting the above technical solution, the beneficial effects of this utility model are: This utility model provides a welding fixture for the upper post tube and support of a guardrail. It solves the defects of low positioning accuracy and easy skew in the welding of the upper post tube and support in the prior art. Through reasonable structural design, this utility model achieves accurate positioning of the tube and support, ensures stable welding position, and improves welding quality and processing efficiency. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the welding fixture for the upper column tube and the support of a guardrail according to this utility model. Figure 2 yes Figure 1 A schematic diagram of the positional structure of the central tube and the support component before they are welded together; Figure 3 yes Figure 2 A schematic diagram of the structure of the tooling without the pipe body and support components installed; Figure 4 yes Figure 1 The front view; Figure 5 yes Figure 4 Sectional view of AA; Figure 6 yes Figure 5 A magnified view of part B in the image; Figure 7 yes Figure 4 A magnified view of part C.
[0017] In the diagram, 1 is a fixed frame, 11 is a support positioning fixture, 111 is a support tube, 112 is a positioning protrusion, 12 is a tube body positioning fixture, 121 is a guide rail, 122 is a sliding plate, 123 is a positioning post, 13 is a base plate, 14 is a vertical plate, 141 is a slot, 142 is an insert block, 143 is a guide slope, 15 is an elastic pin, 151 is an insertion hole, 152 is a connecting rod, 16 is a roller, 161 is an annular groove, 17 is a rib, 21 is a support, 211 is a mounting hole, 22 is a tube body, and 221 is a mounting plate. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings.
[0019] The orientations mentioned in this specification are based on the orientation of the welding fixture for the upper post tube and the support of the guardrail under normal operation. They do not limit the orientation during storage and transportation, and only represent relative positional relationships, not absolute positional relationships.
[0020] Example 1: like Figures 1-7 As shown, a welding fixture for the upper post tube and support of a guardrail includes a fixing frame 1. The fixing frame 1 is made of welded steel structure and has sufficient strength and stability. The fixing frame 1 is fixed with a support positioning fixture 11 for positioning the support 21 and a tube positioning fixture 12 for supporting the tube 22. The fixing frame 1 includes a base plate 13 and an upright plate 14 fixed to the base plate 13 and extending upwards. The support positioning fixture 11 is fixed to the upright plate 14, and the tube positioning fixture 12 is fixed to the base plate 13.
[0021] The support member positioning fixture 11 includes a support tube 111 fixed on the fixing frame 1; the support tube 111 is a circular tube structure. The axis of the support tube 111 is horizontally set, and its diameter is the same as the diameter of the guardrail (not shown in the figure), which can simulate the actual assembly state of the support member 21 and the guardrail. The support member 21 is attached to the outer wall of the support tube 111. The support member 21 is generally provided with mounting holes 211 and drainage holes. In this embodiment, there are two mounting holes 211, located on both sides of the support member 21, and one drainage hole. When the tube body 22 is welded to the support member 21, the drainage hole is covered inside the tube body 22. The support tube 111 is provided with positioning protrusions 112 that fit into the mounting holes 211 or drainage holes of the support member 21. The positioning protrusions 112 can be set to correspond to the mounting holes 211, the drainage holes, or both. In this embodiment, three positioning protrusions 112 are provided, two of which are aligned with the mounting holes 211, and the other is aligned with the drain hole. This ensures that when the support piece 21 is engaged with the positioning protrusion 112, its position is unique. In practical applications, to avoid wobbling, the mounting holes 211 and the drain hole are non-circular; they are elliptical, and the positioning protrusion 112 is an elliptical protrusion that mates with them. The elliptical structure of the mounting holes 211 and the drain hole, in conjunction with the positioning protrusion 112, effectively prevents the support piece from rotating on the support tube 111 compared to a circular structure, further improving the positioning stability of the support piece and ensuring that its position does not shift during welding.
[0022] The pipe positioning fixture 12 includes a support platform, on which the bottom of the pipe 22 rests; the upper arc-shaped groove of the pipe 22 engages with the side wall of the support piece 21. The pipe positioning fixture 12 supports the bottom of the pipe 22 through the support platform, and the upper arc-shaped groove of the pipe 22 engages with the side wall of the support piece 21, ensuring accurate welding position between the pipe 22 and the support piece 21. As one embodiment: the support platform includes support plates fixed to the base plate 13 of the fixing frame and respectively disposed on both sides of the pipe body 22; the two support plates are symmetrically distributed along the axis of the pipe body 22, forming a clearance groove between them for the bottom of the pipe body 22 to be inserted; the mounting plate 221 in the middle of the pipe body 22 is supported on the top surface of the support plates, and the outer side wall of the mounting plate 221 is flush with the outer side wall of the support plates. By setting support plates on both sides of the pipe body 22, the clearance groove formed by the two support plates provides a space for the bottom of the pipe body 22, while the mounting plate in the middle of the pipe body 22 can be stably supported on the support plates, ensuring the positioning stability of the bottom of the pipe body on the support platform and preventing the pipe body 22 from shaking during the welding process.
[0023] During welding, the support piece 21 is snapped into the positioning protrusion 112, thus positioning the support piece 21. The bottom of the tube body 22 is inserted into the clearance groove, and the mounting plate 221 is supported on the support plate and kept flush with the outer side of the support plate, thereby limiting the left and right movement of the tube body 22 and preventing its center from deviating. The support plate supports the tube body 22 and pushes the tube body 22 toward the support piece 21 until the upper arc groove of the tube body 22 is engaged with the side wall of the support piece 21, thus determining the position of the two. Then, the tube body 22 is held and the gap between the two is welded.
[0024] Example 2: like Figures 1-7 As shown in the first embodiment, the pipe body 22 is not fixed stably, and it requires a person to hold it during welding. Therefore, this embodiment further improves the support platform based on the first embodiment.
[0025] The support platform includes guide rails 121 arranged on both sides of the tube and extending front and back, and the guide rails 121 are fixed to the fixing frame 1 by bolts. A slide plate 122 is slidably mounted on the guide rails 121; the slide plate 122 slides along the guide rails 121 toward or away from the support tube 111. The left and right sides of the slide plate 122 are provided with downward folding flanges; rollers 16 are rotatably mounted on the flanges at the bottom of the slide plate 122; multiple rollers 16 are rotatably mounted on each flange.
[0026] The guide rail 121 includes a guide rail body extending front and rear, and a guide groove is provided inside the guide rail body; the guide groove has an opening on one side of the flange, and the opening avoids the axle of the roller 16; the roller 16 is limited to rolling within the guide groove. An annular groove 161 is provided in the middle of the wheel surface of the roller 16; the top and bottom of the guide groove are respectively provided with protruding ribs 17 that engage with the annular groove 161; the roller 16 rolls along the protruding ribs 17.
[0027] The cooperation between the flange and the roller 16 allows the slide plate 122 to slide smoothly along the guide rail 121, reducing the frictional resistance between the slide plate 122 and the guide rail 121, and facilitating the operator to adjust the position of the slide plate 122. The guide groove limits the roller 16, preventing the slide plate 122 from shifting left or right during sliding, ensuring the accuracy of the sliding direction of the slide plate 122. The groove provides clearance for the roller 16 axle, avoiding interference between the axle and the guide rail 121 body, ensuring the normal sliding of the slide plate 122. The cooperation between the annular groove 161 and the rib 17 further limits the roller 16, preventing the roller 16 from moving up and down within the guide groove, ensuring that the slide plate 122 remains horizontal during sliding, avoiding tube positioning deviation due to the tilt of the slide plate 122, and further improving the accuracy and stability of tube positioning.
[0028] A positioning post 123 extending upwards is provided on the sliding plate 122; the diameter of the positioning post 123 is the same as the diameter of the bottom inner hole of the tube body 22; the positioning post 123 is inserted into the bottom inner hole of the tube body 22; and its bottom abuts against the sliding plate 122; a limiting structure is provided between the sliding plate 122 and the guide rail 121. Through the sliding engagement of the guide rail 121 and the sliding plate 122, the tube body 22 can be easily pushed onto the support 21, facilitating their alignment. The precise engagement between the positioning post 123 and the bottom inner hole of the tube body 22 enables rapid positioning of the bottom of the tube body 22, while the limiting structure can fix the position of the sliding plate 122, preventing the tube body 22 from shifting due to the sliding plate 122 during welding.
[0029] The limiting structure can be a clamping structure or an insertion structure. In this embodiment, the limiting structure includes a slot 141 fixed on the guide rail 121 and an insertion block 142 fixed on the slide plate 122; the slot 141 is located between the slide plate 122 and the support tube 111, and its opening extends beyond the direction of the slide plate 122; the insertion block 142 is fixed on the slide plate 122 and located on one side of the slot 141. By sliding the slide plate 122, the insertion block 142 can be inserted into the slot 141. A through hole is formed on the side wall of the slot 141 along the insertion direction perpendicular to the insertion direction of the insert block 142. A spring is inserted through the through hole, and one end of the spring abuts against the stepped surface of the spring and the other end abuts against the bottom of the mounting hole, allowing the spring to partially extend into the slot 141 in its natural state. The insert block 142 has a socket 151 for inserting the spring pin 15. A guide slope 143 is provided on one side of the insert block 142, located on the support tube 111. When the insert block 142 is inserted into the slot 141, the guide slope 143 contacts the bottom of the spring pin 15, forcing the spring pin 15 out of the slot 141. When the insert block 142 is fully inserted into the slot 141, the spring pin 15 aligns with the socket 151 and is inserted into the socket 151. A lifting end is provided at the top of the spring pin 15; lifting the lifting end can pull the spring pin 15 out of the socket 151, thereby unlocking the device.
[0030] Furthermore, two limiting structures are provided, located on both sides of the tube body 22. The limiting structures on both sides of the tube body 22 can simultaneously limit and fix the slide plate 122 from both sides, further improving the positioning stability of the slide plate 122 and preventing uneven force distribution and displacement caused by unilateral limiting, thus ensuring the stability of the tube body 22 during the welding process.
[0031] The lifting ends of the limiting structures on both sides are connected by a connecting rod 152. Lifting the connecting rod 152 can unlock the limiting structures on both sides simultaneously. By connecting the lifting ends of the limiting structures on both sides with the connecting rod 152, the operator only needs to lift the connecting rod 152 to unlock the limiting structures on both sides at the same time, without having to operate the lifting ends on both sides separately. This simplifies the unlocking process, improves the convenience of operation, and is especially suitable for batch processing scenarios.
[0032] The limiting structure, through the cooperation of the insert 142 and the slot 141, combined with the locking effect of the elastic pin 15 and the insertion hole 151, can quickly achieve the positioning and unlocking of the skateboard 122; the setting of the guide slope 143 allows the insert 142 to automatically push up the elastic pin 15 when inserted into the slot 141, eliminating the need for manual operation, simplifying the operation steps and improving the positioning efficiency; the design of the lifting end makes it convenient to quickly unlock when the position of the skateboard 122 needs to be adjusted, making the operation convenient.
[0033] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.
Claims
1. A welding fixture for the upper post tube and support of a guardrail, characterized in that: Includes a fixing frame, on which a support positioning fixture for positioning the support component and a pipe positioning fixture for supporting the pipe body are fixed; The support positioning fixture includes a support tube fixed to the fixed frame; the axis of the support tube is horizontally arranged, and its diameter is the same as the diameter of the guardrail; the support piece is attached to the outer wall of the support tube; the support tube is provided with a positioning protrusion that matches the mounting hole or leakage hole on the support piece; the mounting hole or leakage hole is a non-circular structure; the positioning protrusion is inserted into the mounting hole or leakage hole. The tube positioning fixture includes a support platform, with the bottom of the tube abutting against the support platform; the upper arc-shaped groove of the tube is fastened to the side wall of the support member.
2. The welding fixture for the upper post tube and support of the guardrail according to claim 1, characterized in that: The mounting hole and the leakage hole are elliptical in shape; the positioning protrusion is an elliptical protrusion that matches them.
3. The welding fixture for the upper post tube and support of the guardrail according to claim 1, characterized in that: The support platform includes support plates fixed to the base plate of the fixed frame and respectively arranged on both sides of the tube body; the two support plates are symmetrically distributed along the axis of the tube body, forming a clearance groove between them for the bottom of the tube body to be inserted; the mounting plate in the middle of the tube body is supported on the top surface of the support plates, and the outer side wall of the mounting plate is flush with the outer side wall of the support plates.
4. The welding fixture for the upper post tube and support of the guardrail according to claim 1, characterized in that: The support platform includes guide rails fixed to the base plate of the fixed frame and respectively arranged on both sides of the tube body. A sliding plate is slidably mounted on the guide rail. The sliding plate can slide along the guide rail towards or away from the support tube. An upwardly extending positioning post is provided on the sliding plate. The diameter of the positioning post is the same as the diameter of the bottom inner hole of the tube body. The positioning post is inserted into the bottom inner hole of the tube body, and its bottom abuts against the sliding plate. A limiting structure is provided between the sliding plate and the guide rail.
5. The welding fixture for the upper post tube and support of a guardrail according to claim 4, characterized in that: The limiting structure includes a slot fixed on the guide rail and an insert fixed on the slide plate; The slot is located between the slide plate and the support tube, and its opening extends beyond the direction of the slide plate; The insert is fixed to the slide plate on one side of the slot, and the insert can be inserted into the slot by sliding the slide plate. The slot is provided with a resilient pin; the insert block is provided with a socket for the resilient pin to be inserted; the insert block is provided with a guide slope on one side of the support tube; when the insert block is inserted into the slot, the guide slope contacts the bottom of the resilient pin and forces the resilient pin out of the slot; when the insert block is fully inserted into the slot, the resilient pin is aligned with the socket and the resilient pin is inserted into the socket. The top of the elastic pin is provided with a lifting end. Pulling the lifting end can pull the elastic pin out of the socket, thereby unlocking the device.
6. The welding fixture for the upper post tube and support of a guardrail according to claim 5, characterized in that: Two limiting structures are provided, located on both sides of the tube body respectively.
7. The welding fixture for the upper post tube and support of a guardrail according to claim 6, characterized in that: The lifting ends of the limiting structures on both sides are connected by a connecting rod. Pulling the connecting rod can unlock the limiting structures on both sides simultaneously.
8. The welding fixture for the upper post tube and support of a guardrail according to claim 4, characterized in that: The skateboard has downward-folding flanges on both sides; rollers are rotatably mounted on the flanges at the bottom of the skateboard; multiple rollers are rotatably mounted on each flange. The guide rail includes a guide rail body extending front and rear, and a guide groove is provided inside the guide rail body; the guide groove is provided with an opening on one side of the flange, and the opening avoids the wheel axle of the roller; the roller is limited to rolling within the guide groove.
9. The welding fixture for the upper post tube and support of a guardrail according to claim 8, characterized in that: The roller has an annular groove in the middle of its surface; the top and bottom of the guide groove are respectively provided with protruding ribs that engage with the annular groove; the roller rolls along the protruding ribs.