Three-dimensional adjustable positioning and clamping device for large-size structure segmentation splicing

Abstract

The utility model discloses a three -dimensional adjustable positioning clamping device for large -size structure segmented splicing, and the device includes the base, and the base is equipped with X axle sliding block, Y axle sliding block, Z axle push jar and jaw control push jar in proper order, and the jaw control push jar end is equipped with self -adaptation jaw. Precise positioning in horizontal plane is realized through X axle and Y axle screw rod drive, and the vertical direction is realized through Z axle push jar and is lifted, and finally realizes reliable clamping through the jaw control push jar drive jaw with inclined groove mechanism. The utility model can realize the accurate adjustment and self -adaptation clamping of structure segmentation in three -dimensional space, effectively solved the technical problem of low precision, and the clamping is not firm of traditional positioning method, and the efficiency and quality of large -size structure field splicing have been improved obviously.

Description

Technical Field

[0001] This utility model relates to the field of on-site installation technology for large metal structural components, specifically a three-dimensional adjustable positioning and clamping device for segmented splicing of large-size structures. Background Technology

[0002] In large-scale engineering construction, large-size metal structures commonly employ segmented manufacturing and on-site assembly. Precise alignment of each segment during on-site assembly is crucial for ensuring overall quality. Currently, on-site adjustments mainly rely on manual jacks, hydraulic jacks, and other tools for pushing, supplemented by welding temporary supports or simple clamps for fixation. This method has significant drawbacks: First, the adjustment accuracy is low, unable to precisely and independently fine-tune the position and orientation of segments in three-dimensional space, making it difficult to control the six degrees of freedom; second, the clamping and fixing are unreliable, traditional clamps have limited clamping force and cannot adapt to the workpiece surface, easily displacing under welding stress or external forces, posing safety risks; finally, the degree of automation is low, the entire adjustment process is time-consuming and labor-intensive, inefficient, and heavily reliant on worker experience. Therefore, there is an urgent need for a specialized device that can achieve rapid, accurate, and reliable positioning and clamping. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a three-dimensional adjustable positioning and clamping device for splicing large-size structural segments. By integrating linear motion mechanisms in three orthogonal directions (X, Y, and Z) and an adaptive gripper, it realizes rapid, accurate adjustment and reliable clamping of the position and orientation of structural segments in three-dimensional space, effectively solving the technical problems of low adjustment accuracy and unreliable clamping in traditional methods.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a three-dimensional adjustable positioning and clamping device for segmented splicing of large-size structures, including a base, an X-axis slider on the base, a Y-axis slider on the X-axis slider, a Z-axis push cylinder on the Y-axis slider, the push rod of the Z-axis push cylinder facing upward and the push rod is provided with a gripper control push cylinder, and the end of the gripper control push cylinder is provided with a gripper.

[0005] In a preferred embodiment, the base is provided with an X-axis lead screw passing through the X-axis slider and an X-axis drive motor for driving the X-axis lead screw; The X-axis slider and the X-axis lead screw are threaded together.

[0006] In a preferred embodiment, the base is provided with a first upright plate and a second upright plate at both ends; An X-axis guide rod parallel to the X-axis lead screw is provided between the first vertical plate and the second vertical plate, and the X-axis guide rod passes through the X-axis slider; One end of the X-axis lead screw is axially connected to the X-axis drive motor, and the other end is movably connected to the second vertical plate.

[0007] In a preferred embodiment, the top surface of the X-axis slider is provided with a Y-axis groove, the Y-axis slider is disposed in the groove, and the top surface of the X-axis slider is also provided with a Y-axis lead screw that passes through the Y-axis slider and is threadedly engaged with the Y-axis slider. The Y-axis lead screw is driven by a Y-axis drive motor disposed on the top surface of the X-axis slider.

[0008] In a preferred embodiment, there are two grippers, and one end of each gripper is hinged to two lugs at the end of the gripper-controlled push cylinder. The inner sides of the two grippers are provided with slots, and there is an inclined groove in the slot. The gripper control push rod of the gripper control push cylinder extends to the space between the two grippers, and a vertical rod is fixed on the gripper control push rod. The two ends of the vertical rod extend into the two slots, and the two ends of the vertical rod are provided with protruding buttons, which are located in the inclined groove.

[0009] In a preferred embodiment, a floating pressure block is provided on the clamping surface of the gripper.

[0010] In a preferred embodiment, a protective cover is also included on the base, with a Y-axis slot on the top surface of the protective cover, through which the Z-axis push cylinder passes.

[0011] In a preferred embodiment, a local control box is fixed on the outer wall of the protective cover, and the local control box integrates a motor driver, an I / O interface, and status indicator lights.

[0012] The present invention provides a three-dimensional adjustable positioning and clamping device for segmented splicing of large-size structures. By adopting the above structure, it has the following beneficial effects: (1) Through the integrated design of X-axis lead screw, Y-axis lead screw and Z-axis push cylinder, the independent linear motion of the gripper in three orthogonal directions in space is realized, which can make millimeter-level precise adjustment of the spatial position and attitude of the structural segment. It effectively solves the technical problem of rough adjustment and inability to accurately control multiple degrees of freedom in traditional methods, and provides a reliable hardware foundation for high-precision splicing. (2) A linkage-sloping groove gripper mechanism driven by a gripper-controlled push cylinder is adopted. This mechanism can generate a stable and powerful clamping force, and the floating pressure block set on the clamping surface can adaptively fit the workpiece surface, avoiding excessive local stress or poor clamping caused by point contact or line contact. This ensures that the structural segments will not shift during subsequent welding and other processes, greatly improving the safety and reliability of construction. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the gripper part of this utility model; Figure 3 This is a schematic diagram of the gripper portion of this utility model in the clamping state.

[0014] In the diagram: 1. Base; 2. X-axis slider; 3. X-axis lead screw; 4. X-axis drive motor; 5. X-axis guide rod; 6. First upright plate; 7. Second upright plate; 8. Y-axis slider; 9. Y-axis lead screw; 10. Y-axis drive motor; 11. Z-axis push cylinder; 12. Grip control push cylinder; 121. Grip control push rod; 13. Grip; 14. Protective cover; 15. Hole; 16. Ear seat; 17. Slot; 18. Inclined slot; 19. Upright rod; 20. Protruding button; 21. Floating pressure block; 22. Local control box. Detailed Implementation

[0015] like Figures 1 to 3 As shown, the three-dimensional adjustable positioning and clamping device for segmented splicing of large-size structures described in this utility model mainly consists of a base 1, an X-axis moving component, a Y-axis moving component, a Z-axis lifting component, and an adaptive clamping component.

[0016] The base 1 serves as the foundation of the entire device, with a first upright plate 6 and a second upright plate 7 bolted to both ends. The X-axis drive motor 4 is mounted on the outside of the first upright plate 6 via a motor mount, and its output shaft passes through the first upright plate 6 and is connected to one end of the X-axis lead screw 3 via a coupling. The other end of the X-axis lead screw 3 is movably supported on the second upright plate 7 via a bearing seat. The X-axis slider 2 forms a lead screw and nut pair with the X-axis lead screw 3 through its internal threaded hole. To ensure smooth movement, at least one X-axis guide rod 5 is provided parallel to the X-axis lead screw 3. Both ends of the X-axis guide rod 5 are fixed to the first upright plate 6 and the second upright plate 7, and pass through corresponding holes on the X-axis slider 2 to form a sliding guide. A protective cover 14 covers the base 1 for dust protection and to protect the internal mechanisms.

[0017] The top surface of the X-axis slider 2 is machined with a Y-axis groove. The Y-axis drive motor 10 is fixed to one end of the top surface of the X-axis slider 2 via a motor mount, and its output shaft is connected to one end of the Y-axis lead screw 9. The bottom of the Y-axis slider 8 is embedded in the groove, and forms a lead screw and nut pair with the Y-axis lead screw 9 through its internal threaded hole, realizing precise movement in the Y-axis direction.

[0018] The cylinder body of the Z-axis push cylinder 11 is vertically fixed to the top surface of the Y-axis slider 8 by bolts, and its push rod points vertically upward. The cylinder body of the gripper control push cylinder 12 is fixed to the top of the push rod of the Z-axis push cylinder 11. Two lugs 16 are provided on both sides of the end of the gripper control push cylinder 12. One end of each of the two grippers 13 is hinged to the lugs 16 by a pin. A slot 17 is opened on the inner side of each of the two grippers 13, and a slanted groove 18 is machined in the slot 17. The gripper control push rod 121 of the gripper control push cylinder 12 extends upward and into the space between the two grippers 13, and the upright rod 19 is vertically fixed to the top of the gripper control push rod 121. Both ends of the upright rod 19 extend into the slots 17 of the two grippers 13, and a protruding button 20 that can roll along the slanted groove 18 is installed at its end. On the clamping surface of the gripper 13, a floating pressure block 21 is connected by a ball joint, and the contact surface of the floating pressure block 21 is embedded with an anti-slip pad (such as polyurethane or copper-based material).

[0019] The top surface of the protective cover 14 has a Y-axis slot 15, through which the Z-axis push cylinder 11 and its upper components can move together with the Y-axis slider 8. The local control box 22 is fixed to the outer wall of the protective cover 14 and integrates drivers, I / O interfaces, and status indicator lights for controlling the X-axis drive motor 4, Y-axis drive motor 10, Z-axis push cylinder 11, and gripper control push cylinder 12, facilitating the receipt of central commands and the realization of localized control.

[0020] The working principle of this utility model is as follows: When the position of the structural segment needs to be adjusted, the local control box 22 receives a command and controls the X-axis drive motor 4 and the Y-axis drive motor 10 to operate, driving the X-axis lead screw 3 and the Y-axis lead screw 9 to rotate respectively. This causes the Y-axis slider 8 and the entire clamping assembly above it to move directly above the target position in the horizontal plane (XY plane). Subsequently, the Z-axis push cylinder 11 actuates, pushing the clamping assembly downwards, so that the gripper 13 approaches the part of the structural segment to be clamped (such as a reinforcing rib or edge).

[0021] The gripper control cylinder 12 starts working, and its gripper control push rod 121 retracts horizontally, pushing the upright 19 to move laterally in sync. The protrusions 20 at both ends of the upright 19 move within the inclined grooves 18 of the grippers 13. Due to the guiding effect of the inclined grooves 18, the protrusions 20, while moving upwards, press against the groove walls of the inclined grooves 18 on both sides, thus forcing the two grippers 13 to open outwards around their hinge points with the lugs 16, preparing for clamping. When the push rod extends, the upright 19 moves downwards, and the protrusions 20 move downwards and inwards along the inclined grooves 18, thereby pulling the two grippers 13 inwards to close, achieving clamping of the workpiece. During this process, the floating pressure block 21 can adaptively conform to the workpiece surface, ensuring contact area and clamping stability.

[0022] Multiple units of this device are deployed on site. Through unified control, each device can independently or collaboratively adjust the structural segments it clamps, achieving precise alignment of the segments in six degrees of freedom in three-dimensional space. It also provides continuous and reliable constraints throughout the welding process, effectively preventing deformation and displacement.

Claims

1. A three-dimensional adjustable positioning and clamping device for segmented splicing of large-size structures, characterized in that: Includes a base (1), on which an X-axis slider (2) is provided, on which a Y-axis slider (8) is provided, on which a Z-axis push cylinder (11) is provided, the push rod of the Z-axis push cylinder (11) faces upward and is provided with a gripper control push cylinder (12) on the push rod, and the end of the gripper control push cylinder (12) is provided with a gripper (13).

2. The three-dimensional adjustable positioning and clamping device for segmented splicing of large-size structures according to claim 1, characterized in that: The base (1) is provided with an X-axis lead screw (3) that passes through the X-axis slider (2) and an X-axis drive motor (4) for driving the X-axis lead screw (3). The X-axis slider (2) and the X-axis lead screw (3) are threaded together.

3. The three-dimensional adjustable positioning and clamping device for segmented splicing of large-size structures according to claim 2, characterized in that: The base (1) has a first upright plate (6) and a second upright plate (7) at both ends respectively; An X-axis guide rod (5) parallel to the X-axis lead screw (3) is provided between the first vertical plate (6) and the second vertical plate (7), and the X-axis guide rod (5) passes through the X-axis slider (2); One end of the X-axis lead screw (3) is axially connected to the X-axis drive motor (4), and the other end is movably connected to the second vertical plate (7).

4. The three-dimensional adjustable positioning and clamping device for segmented splicing of large-size structures according to claim 1, characterized in that: The top surface of the X-axis slider (2) is provided with a Y-axis groove, and the Y-axis slider (8) is set in the groove. The top surface of the X-axis slider (2) is also provided with a Y-axis lead screw (9) that passes through the Y-axis slider (8) and is threadedly engaged with the Y-axis slider (8). The Y-axis lead screw (9) is driven by a Y-axis drive motor (10) set on the top surface of the X-axis slider (2).

5. A three-dimensional adjustable positioning and clamping device for segmented splicing of large-size structures according to claim 1, characterized in that: There are two grippers (13), and one end of each gripper (13) is hinged to the two lugs (16) at the end of the gripper control push cylinder (12); The inner sides of the two grippers (13) are provided with slots (17), and there is a sloping groove (18) in the slots (17). The gripper control push rod (121) of the gripper control push cylinder (12) extends between the two grippers (13), and a vertical rod (19) is fixed on the gripper control push rod (121). The two ends of the vertical rod (19) extend into the two slots (17), and the two ends of the vertical rod (19) are provided with protruding buttons (20), which are located in the sloping groove (18).

6. A three-dimensional adjustable positioning and clamping device for segmented splicing of large-size structures according to claim 5, characterized in that: The gripper (13) has a floating pressure block (21) on its gripping surface.

7. A three-dimensional adjustable positioning and clamping device for segmented splicing of large-size structures according to claim 1, characterized in that: It also includes a protective cover (14) covering the base (1), with a Y-axis slot (15) on the top surface of the protective cover (14), and a Z-axis push cylinder (11) passing through the slot (15).

8. A three-dimensional adjustable positioning and clamping device for segmented splicing of large-size structures according to claim 7, characterized in that: A local control box (22) is fixed on the outer wall of the protective cover (14). The local control box (22) integrates a motor driver, an IO interface and a status indicator light.

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