Drilling tool for base connecting piece special for lap joint of round pipe support

Abstract

The utility model discloses a drilling tool for a base connecting piece special for lap joint of a round pipe support, relates to the technical field of rigid pipe fitting connection, and is used for machining a threaded mounting hole and a threaded positioning hole in the base connecting piece. The tool comprises a sliding base, a horizontal longitudinal positioning assembly, a horizontal transverse locking assembly and a drilling guide assembly. The sliding seat can move along the track to adjust the drilling position; the two-stage step positioning groove of the positioning plate is matched with the bottom plate and the lateral connecting block of the connecting piece, and the pressing mechanism is matched with the transverse locking assembly to achieve stable clamping of a workpiece. A guide hole sleeve of the drilling guide assembly is matched with the hole position to guide drilling. The machining efficiency and precision can be improved, the large adjusting allowance is achieved, the device can adapt to products similar to main body components, the development cost of machining tools is reduced, and efficient fusion of customization requirements and industrial production is achieved.

Description

Technical Field

[0001] This utility model relates to the field of rigid pipe connection technology, specifically to a drilling tool for a special base connector for overlapping round pipe supports. Background Technology

[0002] Steel pipe scaffold base connectors are core load-bearing components in building scaffolding, formwork support systems, and temporary supports for special structures. Their performance directly affects the safety and applicability of the support system. Existing technologies, standardized connection bases, including disc-lock scaffold bases and adjustable steel pipe bases, have been successfully implemented in conventional projects. However, they still have some shortcomings and deficiencies in meeting the increasingly complex customized needs of building projects, such as irregular building shapes, extreme environments, and special load conditions.

[0003] The structure is not adaptable enough and it is difficult to match irregular requirements. The connection interface of the existing standard base is usually based on the general pipe diameter and orthogonal connection design, which cannot adapt to non-standard pipe diameter connection, composite structure connection, lack of multiple types of interface, and cannot be installed at an angle.

[0004] Poor installation flexibility and high processing costs for non-standard parts; in non-standard projects, the base needs to be redesigned and molded entirely, and the reuse rate of common components such as base plates and sleeves is low. The production process requires the redesign and manufacture of matching tools, resulting in long production cycles and high costs. With the increasing complexity of construction projects, existing standardized bases and corresponding processing tools can no longer meet customized needs. Therefore, there is an urgent need to develop a steel pipe support base connector and its processing tools, achieving efficient integration of customized needs and industrialized production through modular design and customized verification. Summary of the Invention

[0005] To address the aforementioned issues, this utility model provides a drilling fixture for a special base connector for overlapping round tube supports, which improves the processing efficiency and accuracy of threaded holes on non-standard parts. Furthermore, the drilling fixture has a large adjustment margin, can adapt to the price of products with similar main components, and reduces the development and design costs of processing tools.

[0006] A drilling fixture for a special base connector for overlapping round tube supports is used to process threaded mounting holes 1 and threaded positioning holes 2 on the base connector; the connector includes a connector body 3, a base plate 4, and lateral connecting blocks 5; the base plate 4 is connected to the horizontal bottom surface of the connector body 3, and threaded mounting holes 1 are provided on both sides of the base plate 4; the lateral connecting blocks 5 are provided on the vertical surface of the connector body 3, and the lateral connecting blocks 5 protrude from the vertical surface of the connector body 3, and have three horizontally arranged threaded positioning holes 2; characterized in that:

[0007] Includes sliding seat 6, horizontal longitudinal positioning assembly, horizontal transverse locking assembly, and drilling guide assembly;

[0008] The bottom of the sliding seat 6 is provided with guide wheels, which cooperate with the specific stroke track set on the worktable 7 below. The rest of the bottom surface is in direct contact with the worktable 7. The upper surface of the sliding seat 6 is provided with a vertical push rod 8, which is applied with external force to drive it to move back and forth along the track to adjust the drilling position.

[0009] The horizontal and vertical positioning assembly includes a positioning plate 9 and a pressure application mechanism;

[0010] The positioning plate 9 is fixed to the rear end of the sliding seat 6. Two-stage positioning grooves 10 are provided on its front side. The width and depth of the first-stage step match the size of the base plate 4 on the base connector, while the shape and size of the second-stage step match the lateral connecting block 5 on the base connector.

[0011] The pressure-applying mechanism is fixed to the center of the surface of the sliding seat 6 and is integrally mounted on the traction seat 11. It includes a handle 12, a transmission bracket 13, a pressure rod 14, and a positioning end 15. The traction seat 11 is fixed to the surface of the sliding seat 6. An arc-shaped slide rail 17 with a square through-slot 16 is provided in the center of its upper surface. A circular sleeve 18 is fixed to the rear end of the arc-shaped slide rail 17. The inner diameters of both the arc-shaped slide rail 17 and the circular sleeve 18 are larger than the pressure rod 14, forming a channel that allows the cylindrical pressure rod 14 to slide while providing circumferential displacement allowance. One end of the pressure rod 14 passes through… The circular sleeve 18 is fixed to the positioning end 15, and the other end is connected to the rear end of the transmission bracket 13 by a rotating pin; in addition, the front end of the traction seat 11 is provided with a connection point, which is connected to one end of the transmission locking rod 19 by a rotating pin, and the other end of the transmission locking rod 19 is located in the middle of the transmission bracket 13. The transmission locking rod 19, the transmission bracket 13 and the handle 12 are connected to the same point by a rotating pin; the positioning end 15 is a fan-shaped ring component, and the radius of its inner circle is adapted to the outer diameter of the main body 3 of the connector to be locked.

[0012] The horizontal locking assembly is used to clamp the two sides of the base connector during processing. It includes a horizontal power transmission rod 20, a vertical power transmission rod 21, and a horizontal locking block 22. The horizontal power transmission rod 20 passes longitudinally through the interior of the sliding seat 6. Its front end is provided with a fixing rod 23 and passes through the square through slot 16 at the bottom of the arc-shaped slide rail 17 of the traction seat 11 and is fixed to the pressure rod 14. Its rear end is connected to the vertical power transmission rod 21. The vertical power transmission rod 21 is connected to two force rods 24 to transmit the force to the horizontal locking block 22. The horizontal locking block 22 moves forward to hold the base connector.

[0013] The drilling guide assembly includes a pressure plate 25 installed on the top of the positioning plate 9 via a telescopic guide post. The pressure plate 25 is provided with a guide hole sleeve 26 that runs vertically through the plate. The number and arrangement of the guide hole sleeves 26 correspond to the number and position of the threaded mounting holes 1 provided on both sides of the bottom plate 4 of the connector body 3, and the threaded positioning holes 2 provided on the lateral connecting block 5 of the connector body 3.

[0014] Preferably, the front end of the pressure rod 14 is connected to the horizontal power transmission rod 20, and the remaining part passes through the sliding seat 6 and the positioning plate 9 in a horizontal direction. Its rear end is connected to the lower end of the vertical power transmission rod 21, and the upper end of the vertical power transmission rod 21 is connected to two force rods 24 symmetrically arranged around the center line of the positioning plate 9. The ends of the two force rods 24 are connected to the outer side of the transverse locking block 22 on their corresponding sides. The connection between the pressure rod 14, the vertical power transmission rod 21, and the force rod 24 is made by rotating pins. The rod body of the vertical power transmission rod 21 is movably connected to the rotating seat 27 fixed on the back of the positioning plate 9 to form a lever structure for force transmission.

[0015] Preferably, the transverse locking block 22 has a jaw structure that gradually narrows from the outside to the inside. Its inner part is movably connected to the positioning plate 9 via a slide rail on the side of the positioning plate 9, and its rear end is fixed to the end of the force application rod 24. The two transverse locking blocks 22 are symmetrically arranged, and the distance between the middle part of their jaw structures is consistent with the width of the base connector.

[0016] The process of using the drilling fixture for the base connector described in this application can be summarized as follows:

[0017] First, the threaded positioning hole 2 on the lateral connecting block 5 is machined:

[0018] The first step is to place and initially position the connector. Place the base connector on the positioning plate 9 so that the base plate 4 of the connector is embedded in the first-level step positioning groove 10 of the positioning plate 9.

[0019] The second step is to horizontally lock the connecting piece. By operating the handle 12 of the pressure applying mechanism, the pressure applying rod 14 is moved through the transmission locking rod 19 and the transmission bracket 13. The force of the pressure applying rod 14 is transmitted to the vertical power transmission rod 21 through the horizontal power transmission rod 20, including the first transmission rod, the transition rod, and the second transmission rod, which in turn drives the force applying rod 24. The force applying rod 24 drives the horizontal locking block 22 to clamp the connecting piece body 3 from both sides with an arc-shaped opening, thereby achieving horizontal fixation.

[0020] The third step is to adjust the drilling position by pushing the vertical push rod 8 on the sliding seat 6, which causes the bottom guide wheel of the sliding seat 6 to move back and forth along the track of the worktable 7, thus precisely adjusting the drilling position.

[0021] The fourth step is to perform the drilling operation, using the guide sleeve 26 in the drilling guide assembly to guide the drilling tool to complete the hole processing.

[0022] Then, the threaded mounting holes 1 provided on both sides of the base plate 4 of the main body 3 of the connector are machined:

[0023] The first step is to place and initially position the connector. Place the base connector on the positioning plate 9 so that the side connecting block 5 of the connector is embedded in the secondary step positioning groove 10, and the bottom plate 4 is facing upwards, thus completing the initial longitudinal positioning.

[0024] Steps two through four refer to the machining process for threaded positioning hole 2. Beneficial effects

[0025] ①This application effectively improves the processing efficiency and accuracy of the threaded positioning hole 2 and threaded mounting hole 1 on the threaded positioning plate 9 of the drilling fixture, the horizontal locking component, and the drilling guide component that matches the hole position.

[0026] ②The tooling described in this application has a large adjustment margin, including the sliding seat 6 which can adjust the drilling position by moving back and forth along the track, which can adapt to products with similar main components, improve the reuse rate of general parts, and solve the problem that standardized bases and tools in the prior art are difficult to match irregular and customized needs.

[0027] ③ By using the tooling described in this application, the need to redesign and develop processing tools for different non-standard parts can be reduced, the development and design costs of processing tools can be reduced, and the situation of redesigning and opening molds throughout the entire process can be avoided, thus shortening the production cycle and realizing the integration of customized needs and industrialized production. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of the special base connector for the overlapping of the circular tube support.

[0029] Figure 2 This is a structural schematic diagram of the drilling fixture for the base connector.

[0030] Figure 3 yes Figure 2 A partial cross-sectional view.

[0031] Figure 4 yes Figure 2 A partial schematic diagram.

[0032] Figure 5 This is a schematic diagram of the structure of the traction seat.

[0033] Figure 6 This is a structural schematic diagram of the horizontal locking assembly.

[0034] Figure 7 This is a schematic diagram of the operation of the horizontal locking assembly.

[0035] In the diagram: 1. Threaded mounting hole; 2. Threaded positioning hole; 3. Connector body; 4. Base plate; 5. Lateral connecting block; 6. Sliding seat; 7. Worktable; 8. Vertical push rod; 9. Positioning plate; 10. Positioning groove; 11. Traction seat; 12. Handle; 13. Transmission bracket; 14. Pressure rod; 15. Positioning end; 16. Through groove; 17. Arc-shaped slide; 18. Circular sleeve; 19. Transmission locking rod; 20. Horizontal power transmission rod; 21. Vertical power transmission rod; 22. Lateral locking block; 23. Fixing rod; 24. Force rod; 25. Pressure plate; 26. Guide hole sleeve; 27. Rotating seat. Detailed Implementation

[0036] The technical solution of this application will be further described with reference to the accompanying drawings. Example 1

[0037] refer to Figure 1-7 This embodiment provides a drilling tool for a special base connector for overlapping round tube supports, which aims to achieve efficient processing of threaded mounting holes and threaded positioning holes on the base connector through the cooperation of the basic structure.

[0038] The drilling fixture includes a sliding seat, a horizontal longitudinal positioning assembly, a horizontal transverse locking assembly, and a drilling guide assembly.

[0039] The bottom of the sliding seat is equipped with guide wheels that are adapted to the track on the worktable surface, allowing it to move back and forth along the track; the upper surface is equipped with a vertical push rod, which is used to push the sliding seat to adjust its position.

[0040] The horizontal longitudinal positioning assembly includes a positioning plate and a pressure applying mechanism. The positioning plate is fixed to the rear end of the sliding seat and has a two-stage stepped positioning groove on the front: the first stage adapts to the base plate of the base connector, and the second stage adapts to the lateral connecting block. The pressure applying mechanism is installed on the traction seat in the middle of the sliding seat surface and includes a handle, a transmission bracket, a pressure applying rod, and a positioning end.

[0041] The traction seat is equipped with an arc-shaped slide and a circular sleeve, forming a channel for the pressure rod to slide; one end of the pressure rod is connected to the positioning end, which is a fan-shaped ring that matches the outer diameter of the connecting part body, and the other end is connected to the transmission bracket through a rotating pin.

[0042] The front end of the traction seat is connected to the transmission locking rod via a rotating pin. The other end of the transmission locking rod is connected to the transmission bracket and the handle via a rotating pin, forming a force transmission structure.

[0043] The horizontal locking assembly includes a horizontal power transmission rod, a vertical power transmission rod, and a horizontal locking block. The horizontal power transmission rod extends longitudinally into the sliding seat, with its front end fixed to the pressure rod via a through groove in the arc-shaped slide rail through a fixing rod, and its rear end connected to the vertical power transmission rod. The vertical power transmission rod connects to two symmetrical force-applying rods, with the ends of the force-applying rods connected to the horizontal locking block. The horizontal locking block has a jaw structure that is wider on the outside and narrower on the inside, and is movably connected via a slide rail on the side of the positioning plate, symmetrically arranged to lock the connecting parts.

[0044] The drilling guide assembly includes a pressure plate mounted on the top of the positioning plate via a telescopic guide post. The pressure plate is provided with guide hole sleeves, the number and position of which correspond one-to-one with the threaded mounting holes and threaded positioning holes on the base connector.

[0045] The operation process is as follows:

[0046] ① Machining threaded positioning holes:

[0047] Place the base connector on the positioning plate so that the base plate is embedded in the first-level step positioning groove;

[0048] Lateral locking: The operating handle drives the pressure rod to move through the locking rod and the support; the force is transmitted to the force rod through the horizontal power transmission rod and the vertical power transmission rod, driving the lateral locking block to clamp the main body of the connecting piece from both sides;

[0049] Adjust position: Push the vertical push rod to move the sliding seat along the track and accurately align it with the drilling position;

[0050] Drilling: The drilling tool is guided by the guide hole sleeve on the pressure plate to complete the machining of the thread positioning hole.

[0051] ② Preliminary positioning of the threaded mounting hole:

[0052] Flip the base connector so that the side connecting block is embedded in the secondary step positioning groove, with the bottom plate facing upwards;

[0053] The horizontal locking, position adjustment, and drilling steps are the same as above. The threaded mounting hole is machined by using the corresponding guide hole sleeve. Example 2

[0054] refer to Figure 1-7 This embodiment optimizes the structure based on embodiment 1, enhancing positioning stability and workpiece protection. It is suitable for processing base connectors with easily damaged surfaces or higher dimensional accuracy requirements, specifically including:

[0055] ① Positioning plate: An elastic buffer strip is added to the inner side of the positioning groove of the two-stage steps to avoid surface damage caused by hard contact between the connector and the positioning plate; a fine-adjustable positioning pin is added to the bottom of the groove of the first-stage and second-stage steps, which improves the initial positioning accuracy by embedding it into the reserved hole of the base plate or the side connecting block.

[0056] ② Lateral locking block: The inner contact surface of the lateral locking block is equipped with a wear-resistant rubber layer, which not only enhances friction to prevent slippage, but also avoids damaging the surface of the connector; the inner edge of the jaw structure is rounded to reduce stress concentration on the connector.

[0057] ③ Drilling guide assembly: The guide sleeve adopts a detachable structure and is connected to the pressure plate by a buckle. The guide sleeve with the corresponding hole arrangement can be quickly replaced according to different hole position requirements, improving the adaptability of the tooling to similar structural connectors.

[0058] Operating procedures:

[0059] ① Initial positioning via threaded positioning holes: Embed the base plate of the base connector into the first-level stepped positioning groove, insert the positioning pin into the pre-drilled hole in the base plate, and allow the elastic buffer strip to conform to the side of the base plate for precise and buffered initial positioning. Lateral locking: Drive the lateral locking block with the operating handle. The inner rubber layer conforms to the main body of the connector, and the rounded edges prevent stress concentration, ensuring stable locking while protecting the workpiece. Position adjustment: Same as in Example 1, align the position using the sliding seat. Drilling: If the hole position differs from the conventional one, replace the corresponding guide hole sleeve to guide the drilling tool for machining.

[0060] ② Preliminary positioning of threaded mounting holes: The lateral connecting block is embedded into the secondary step positioning groove, and the positioning pin and buffer strip are used to achieve stable positioning; the lateral locking, position adjustment and drilling steps are the same as above. High-precision machining is completed by using the optimized rubber layer and detachable guide hole sleeve.

[0061] This embodiment improves positioning accuracy and workpiece protection through structural optimization, while enhancing the adaptability of the tooling to different hole position requirements, making it suitable for higher-standard customized processing scenarios.

Claims

1. A drilling fixture for a special base connector for overlapping round tube supports, the base connector comprising a connector body (3), a base plate (4), and lateral connecting blocks (5); the base plate (4) is connected to the horizontal bottom surface of the connector body (3), and threaded mounting holes (1) are provided on both sides of the base plate (4); while the vertical surface of the connector body (3) is provided with lateral connecting blocks (5), the lateral connecting blocks (5) protruding from the vertical surface of the connector body (3), and having three horizontally arranged threaded positioning holes (2); the drilling fixture is used to process the threaded mounting holes (1) and threaded positioning holes (2) on the base connector, characterized in that: Includes a sliding seat (6), a horizontal longitudinal positioning assembly, a horizontal transverse locking assembly, and a drilling guide assembly; The bottom of the sliding seat (6) is provided with guide wheels, which cooperate with the specific stroke track set on the worktable (7) below. The rest of the bottom surface is in direct contact with the worktable (7). The upper surface of the sliding seat (6) is provided with a vertical push rod (8), which is applied with external force to drive it to move back and forth along the track to adjust the drilling position. The horizontal longitudinal positioning assembly includes a positioning plate (9) and a pressure applying mechanism; The positioning plate (9) is fixed to the rear end of the sliding seat (6), and a two-stage positioning groove (10) is provided on its front side. The width and depth of the first-stage step match the size of the base plate (4) on the base connector, while the shape and size of the second-stage step match the side connecting block (5) on the base connector. The pressure-applying mechanism is fixed in the middle of the surface of the sliding seat (6) and is integrally installed on the traction seat (11), including a handle (12), a transmission bracket (13), a pressure rod (14), and a positioning end (15); wherein, the traction seat (11) is fixed on the surface of the sliding seat (6), and an arc-shaped slide (17) with a square through groove (16) is provided in the middle of the upper surface. A circular sleeve (18) is fixed at the rear end of the arc-shaped slide (17). The inner diameters of the arc-shaped slide (17) and the circular sleeve (18) are both larger than the pressure rod (14), and the two form a channel that allows the cylindrical pressure rod (14) to slide and leaves circumferential displacement margin; the pressure rod (14) One end of the traction seat (11) passes through the circular sleeve (18) and is fixed to the positioning end (15), while the other end is connected to the rear end of the transmission bracket (13) by a rotating pin. Furthermore, the front end of the traction seat (11) is provided with a connection point, which is connected to one end of the transmission locking rod (19) by a rotating pin. The other end of the transmission locking rod (19) is located in the middle of the transmission bracket (13). The transmission locking rod (19), the transmission bracket (13), and the handle (12) are connected to the same point by a rotating pin. The positioning end (15) is a fan-shaped ring component, and the radius of its inner circle is adapted to the outer diameter of the main body (3) of the connector to be locked. The horizontal locking assembly is used to clamp the two sides of the base connector during processing. It includes a horizontal power transmission rod (20), a vertical power transmission rod (21), and a horizontal locking block (22). The horizontal power transmission rod (20) passes longitudinally through the interior of the sliding seat (6). Its front end is provided with a fixing rod (23) and passes through the square through groove (16) at the bottom of the arc-shaped slide (17) of the traction seat (11) and is fixed to the pressure rod (14). Its rear end is connected to the vertical power transmission rod (21), and the vertical power transmission rod (21) is connected to two force rods (24). The drilling guide assembly includes a pressure plate (25) installed on the top of the positioning plate (9) via a telescopic guide post. The pressure plate (25) is provided with a guide hole sleeve (26) that runs vertically through the top and bottom. The number and arrangement of the guide hole sleeves (26) correspond to the number and position of the threaded mounting holes (1) provided on both sides of the bottom plate (4) of the connector body (3) and the threaded positioning holes (2) provided on the side connecting block (5) of the connector body (3).

2. The drilling fixture for a special base connector for overlapping round tube supports according to claim 1, characterized in that, The front end of the pressure rod (14) is connected to the horizontal power transmission rod (20), and the remaining part passes through the sliding seat (6) and the positioning plate (9) in the horizontal direction. Its rear end is connected to the lower end of the vertical power transmission rod (21), and the upper end of the vertical power transmission rod (21) is connected to two force rods (24) symmetrically arranged with the center line of the positioning plate (9). The ends of the two force rods (24) are connected to the outer side of the transverse locking block (22) on their corresponding sides. The connection between the pressure rod (14), the vertical power transmission rod (21), and the force rod (24) is made by rotating pin. The rod body of the vertical power transmission rod (21) is movably connected to the rotating seat (27) fixed on the back of the positioning plate (9) to form a lever structure for force transmission.

3. The drilling fixture for a special base connector for overlapping round tube supports according to claim 1 or 2, characterized in that, The transverse locking block (22) has a jaw structure that gradually narrows from the outside to the inside. Its inner part is movably connected to the slide rail set on the side of the positioning plate (9), and its rear end is fixed to the end of the force bar (24). The two transverse locking blocks (22) are symmetrically arranged, and the distance between the middle part of their jaw structures is consistent with the width of the base connector.

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