A device and method for automatic press fitting of a seat plate in a bridge spherical steel support

Abstract

This invention relates to the field of bridge engineering, specifically providing an apparatus for the automatic pressing of the middle bearing plate of a bridge spherical steel bearing. The apparatus includes a processing platform, a blocking component, a limiting component, a pressurizing component, a conveyor line, and a clamping component. The blocking component horizontally aligns the middle bearing plate tray and the lower bearing plate in a direction perpendicular to the transport direction of the conveyor line. The limiting component horizontally aligns the middle bearing plate tray and the lower bearing plate in the transport direction of the conveyor line. Thus, during the pressing process, the blocking and limiting components jointly achieve four-way horizontal alignment of the middle bearing plate tray and the lower bearing plate. The clamping component clamps the middle bearing plate and includes multiple jaws. The middle bearing plate is clamped by the jaws, and a clearance is provided between the flat wear-resistant plate and the jaws. This invention also provides a method for the automatic pressing of the middle bearing plate of a bridge spherical steel bearing. This invention enables the automatic pressing of the middle bearing plate, reduces labor intensity, and avoids safety hazards.

Description

Technical Field

[0001] This invention relates to the field of bridge engineering technology, and in particular to a device and method for automatic pressing of the bearing plate in a spherical steel bearing for bridges. Background Technology

[0002] Spherical steel bridge bearings, with their low sensitivity to seismic excitation frequency range, durability, stability, and strong self-resetting ability, have gradually become a promising type of bridge seismic isolation and damping bearing. A typical bridge spherical steel bearing consists of an upper bearing plate, a lower bearing plate, and a middle bearing plate located between the upper and lower bearing plates. A flat wear-resistant plate is placed between the middle and upper bearing plates, and a spherical wear-resistant plate is placed between the middle and lower bearing plates. In the manufacturing process of bridge spherical steel bearings, one step is the pressing of the middle and lower bearing plates, where the middle bearing plate is pressed onto the spherical wear-resistant plate and the lower bearing plate. Currently, the pressing of the middle bearing plate in bridge spherical steel bearings typically involves manually lifting the middle bearing plate and placing it onto the spherical wear-resistant plate, then using a tooling head and a press to assemble the middle bearing plate. This process mainly presents the following problems:

[0003] 1. Due to differences in the skill level of the workers and the placement of the center plate and tooling head, it is impossible to ensure that the exposed height deviation of the spherical wear-resistant plate is ≤0.3mm and the assembly gap is ≤0.6mm after the center plate is pressed into the spherical steel support product. This means that the pressing may be uneven or not compacted, resulting in product defects, quality problems, rework and repair, and may also damage the flat wear-resistant plate.

[0004] 2. During manual hoisting and operation of the press, it is necessary to constantly confirm the pressing position and angle. The frequent bending of the hands during manual operation is labor-intensive, and there are certain safety hazards in press operation.

[0005] Therefore, designing a device and method for automatic pressing of the bearing plate of bridge spherical steel bearings to achieve automatic pressing of the bearing plate and solve various problems that occur during manual pressing is an urgent problem to be solved. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides an apparatus and method for automatically pressing the center plate of a bridge spherical steel bearing. This method can solve the quality problems caused by uneven pressing of the center plate during manual pressing, reduce the labor intensity of manual assembly, and eliminate safety hazards.

[0007] To achieve the above objectives, the present invention proposes the following technical solution: a device for automatic pressing of the middle bearing plate of a bridge spherical steel bearing, comprising a processing platform, a blocking component located below the processing platform, a limiting component located on the processing platform, a pressurizing component located above the processing platform, and a conveyor line located on the processing platform and between the limiting components; the power output end of the pressurizing component is connected to a clamping component; the blocking component performs horizontal alignment of the middle bearing plate tray and the lower bearing plate in a direction perpendicular to the transport direction of the conveyor line, and the limiting component performs horizontal alignment of the middle bearing plate tray and the lower bearing plate in the transport direction of the conveyor line, so that during the pressing process, the blocking component and the limiting component jointly perform four-way horizontal alignment of the middle bearing plate tray and the lower bearing plate; the clamping component is used to clamp the middle bearing plate and includes multiple jaws, the middle bearing plate is clamped by the jaws and a clearance gap is left between the flat wear-resistant plate and the jaws.

[0008] Furthermore, the blocking assembly includes a blocking drive and a blocking rod arranged vertically; a blocking slot is provided on the processing platform above the blocking rod along the transport direction of the conveyor line, the blocking slot is located on both sides of the conveyor line, and the blocking rod is driven by the blocking drive to extend and retract up and down in the blocking slot to extend above the processing platform to block and limit the middle seat plate and the lower seat plate, or retract below the processing platform to make way for the transport of the middle seat plate and the lower seat plate.

[0009] Furthermore, the blocking assembly also includes a clamping drive and a connecting beam connected to the lower part of the blocking rod. The clamping drive drives the connecting beam to slide horizontally along the blocking groove with the blocking rod to perform horizontal centering of the centering plate tray and the lower plate in a direction perpendicular to the transport direction of the conveyor line. The connecting beam is perpendicular to the blocking groove, and the connecting beam can drive the blocking rod to slide horizontally within the blocking groove.

[0010] Furthermore, the lower end of the connecting beam is provided with a sliding unit, which drives the blocking rod to slide within the blocking groove. The sliding unit includes a slide rail located below the blocking groove and a slider slidably connected to the slide rail. The connecting beam is fixedly connected to the slider. The power output end of the blocking drive component is connected to the slider and drives the blocking rod to extend and retract as a whole by driving the slider to move up and down.

[0011] Furthermore, the limiting assembly includes a limiting drive unit located on the processing platform and a limiting seat driven by the limiting drive unit. The limiting seat performs secondary horizontal centering of the middle seat plate tray and the lower seat plate along the transport direction of the conveyor line outside the blocking channel.

[0012] Furthermore, the clamping assembly includes a clamping disk connected to the power output end of the pressurizing assembly, with the jaws evenly distributed circumferentially on the side end face of the clamping disk; the clamping area of ​​the jaws has a stepped structure, specifically including a lower step for clamping the middle seat plate and an upper step for avoiding the flat wear-resistant plate, the upper step being located inside the lower step and formed by opening upward from the inner end of the upper step.

[0013] Furthermore, the gripper on the upper part of the upper step includes a concave slide groove, and a receiving groove for accommodating the gripper is provided on the side end face of the clamping disk; a boss is provided in the receiving groove and is slidably matched and connected in the slide groove, and the gripper can slide along the radial direction of the clamping disk in the slide groove through the boss to clamp the middle seat plate.

[0014] Furthermore, the upper end face of the gripper is provided with a cylindrical threaded groove facing downward and the threaded groove is provided with an internal thread. The receiving groove also includes a cylindrical telescopic groove located above the gripper. The telescopic groove is matched and located above the threaded groove. The telescopic groove and the threaded groove are provided with a telescopic screw, and the telescopic screw can drive the gripper to extend and retract radially along the clamping plate.

[0015] Furthermore, the gripper includes four circumferentially distributed on the side of the gripping disc; the pressurizing assembly includes a press and an upper plate located at the power output end of the press, with the gripping disc connected to the middle of the upper plate.

[0016] A method for automatically pressing the bearing plate of a bridge spherical steel bearing, wherein the pressing is performed by the aforementioned device, includes the following steps:

[0017] S1: Install the flat wear-resistant plate onto the upper part of the middle seat plate, and install the spherical wear-resistant plate onto the upper part of the lower seat plate;

[0018] S2: Place the middle seat plate on the middle seat plate tray, and transport the middle seat plate tray to the processing platform via the conveyor line;

[0019] S3: Activate the blocking drive to move the blocking rod upward and extend it above the blocking slot. Activate the clamping drive to drive the slider to move the blocking rod along the conveying direction of the conveyor line and perform a horizontal centering of the middle seat plate tray.

[0020] S4: Start the limit drive to drive the limit seat to move toward the middle seat plate tray and perform secondary horizontal centering of the middle seat plate tray inside the blocking slot to achieve four-way horizontal centering of the middle seat plate tray;

[0021] S5: Start the press to descend and clamp the middle seat plate with the grippers, then start the press to rise and drive the middle seat plate to rise;

[0022] S6: Extend the blocking rod downwards to below the blocking slot, retract the limit seat to the outside of the blocking slot, and transport the middle seat plate tray to the outside of the processing platform via the conveyor line;

[0023] S7: Following the conveying and centering method of the middle seat plate tray in S2-S4, the lower seat plate is conveyed to the processing platform and horizontally aligned twice to achieve four-way horizontal alignment of the lower seat plate;

[0024] S8: Start the press to descend. At this time, the clamping plate and jaws drive the middle seat plate to press down above the lower seat plate and press it tightly onto the spherical wear-resistant plate. Thus, the installation of the middle seat plate and the lower seat plate is completed.

[0025] The beneficial effects of this invention are:

[0026] 1. This invention uses blocking and limiting components to perform secondary alignment of the middle seat plate tray and the lower seat plate to achieve four-way horizontal alignment. This ensures that the middle seat plate does not shift during the pressing process, and that the spherical wear-resistant plate located between the middle seat plate and the lower seat plate will not slip out due to force during the pressing process. This also ensures that the exposed height deviation of the spherical wear-resistant plate is controlled within the required process requirement of 0.3mm.

[0027] 2. In this invention, the grippers in the clamping assembly have a stepped structure and are arranged circumferentially (i.e. radially) along the clamping disk. This allows for stable gripping of the middle seat plate while avoiding the flat wear-resistant plate in the middle of the middle seat plate, so that the pressure of the press is transmitted to the edge of the middle seat plate 2-5mm away, thus protecting the flat wear-resistant plate.

[0028] 3. This invention controls the pressing stroke through a servo press, which can ensure proper pressing and improve the fit between the spherical wear-resistant plate and the concave surface of the lower seat plate. Furthermore, this invention can realize an automatic pressing production process for the middle seat plate, achieving continuous assembly of spherical steel supports.

[0029] 4. This invention can achieve unmanned operation, reduce the intensity of manual labor and eliminate safety hazards of press fitting. At the same time, this invention has a wide range of applicability and can be used for press fitting of any spherical steel support of different sizes and slopes. Attached Figure Description

[0030] Figure 1 This is a front view structural schematic diagram of the automatic pressing device for the middle seat plate provided in an embodiment of the present invention.

[0031] Figure 2 This is a three-dimensional structural diagram of the automatic pressing device for the middle seat plate provided in the embodiment of the present invention (showing the middle seat plate tray and a middle seat plate to be installed on the middle seat plate tray).

[0032] Figure 3 This is a schematic diagram of the clamping assembly provided in an embodiment of the present invention.

[0033] Reference numerals: 1. Processing platform; 2. Blocking assembly; 3. Limiting assembly; 4. Pressurizing assembly; 5. Conveyor line; 6. Clamping assembly; 7. Middle seat plate tray; 8. Middle seat plate; 9. Lower seat plate; 10. Gripper; 11. Blocking through groove; 12. Connecting beam; 13. Slide rail; 14. Slider; 15. Limiting drive component; 16. Limiting seat; 17. Clamping disc; 18. Lower step; 19. Upper step; 20. Slide groove; 21. Receiving groove; 22. Boss; 23. Threaded groove; 24. Telescopic groove; 25. Press; 26. Upper plate; 27. Support beam; 28. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the following description is provided in conjunction with the appendix. Figure 1-3 The present invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and do not constitute a limitation thereof.

[0035] A device for automatic pressing of the middle bearing plate of a bridge spherical steel bearing, wherein the bridge spherical steel bearing includes an upper bearing plate, a middle bearing plate 8, and a lower bearing plate 9, a flat wear-resistant plate is included between the upper bearing plate and the middle bearing plate 8, and a spherical wear-resistant plate is included between the middle bearing plate 8 and the lower bearing plate 9. Figure 1-3 (Neither the flat wear-resistant plate nor the spherical wear-resistant plate is shown in the diagram.) Before pressing, the flat wear-resistant plate is placed on the upper end of the middle seat plate 8, and the spherical wear-resistant plate is placed on the upper end of the lower seat plate 9, and then pressing is performed. This embodiment describes the pressing between the middle seat plate 8 and the lower seat plate 9. The pressing assembly 4 includes a press 26 and an upper plate 27 located at the power output end of the press 26. The press 26 is a servo press, which can ensure that the curved surface assembly gap between the spherical wear-resistant plate and the lower seat plate 9 is ≤0.6mm.

[0036] like Figure 1 As shown, the automatic pressing device for the middle seat plate includes a processing platform 1, a blocking component 2, a limiting component 3, a pressurizing component 4, and a conveyor line 5. The blocking component 2 is located below the processing platform 1, the limiting component 3 is located on the processing platform 1, the pressurizing component 4 is located above the processing platform 1, and the conveyor line 5 is located on the processing platform 1 and between the limiting components 3. The conveyor line 5 can be a conveying roller, a conveyor belt, or other conveying structure. In this embodiment, the conveyor line is composed of conveying rollers. The conveyor line 5 is used to convey the middle seat plate tray 7 and the lower seat plate 9 to the processing platform 1. Before processing, the middle seat plate 8 to be processed needs to be placed on the middle seat plate tray 7, and then the middle seat plate 8 is conveyed to the processing platform 1 through the middle seat plate tray 7.

[0037] The transport direction of conveyor line 5 is Figure 2 The direction shown in M ​​is perpendicular to the transport direction of conveyor line 5, as shown in the figure. Figure 2 The direction indicated by N in the middle. For example... Figure 1 , 2As shown, the power output end of the pressurizing component 4 is connected to the clamping component 6. The blocking component 2 horizontally centers the middle seat plate tray 7 and the lower seat plate 9 in a direction perpendicular to the transport direction of the conveyor line 5. The limiting component 3 horizontally centers the middle seat plate tray 7 and the lower seat plate 9 in the transport direction of the conveyor line 5. Thus, during the pressing process, the blocking component 2 and the limiting component 3 jointly perform four-way horizontal alignment of the middle seat plate tray 7 and the lower seat plate 9. The clamping component 6 is used to clamp the middle seat plate 8. Through four-way alignment, the exposed height deviation of the spherical wear-resistant plate can be controlled within 0.3mm.

[0038] like Figure 1 , 2 As shown, the blocking assembly 2 includes a blocking drive and a blocking rod 11 arranged vertically. A blocking groove 12 is provided on the processing platform 1 above the blocking rod 11 along the transport direction of the conveyor line 5. The blocking groove 12 is located on both sides of the conveyor line 5. The blocking rod 11 is driven by the blocking drive to extend and retract up and down in the blocking groove 12 to extend above the processing platform 1 to block and limit the middle seat plate 7 and the lower seat plate 9, or to retract below the processing platform 1 to allow the transport of the middle seat plate 8 and the lower seat plate 9. The blocking assembly 2 also includes a clamping drive and a connecting beam 13 connected to the lower part of the blocking rod 11. The clamping drive drives the connecting beam 13 to slide horizontally along the blocking groove 12 with the blocking rod 11 to horizontally center the middle seat plate 7 and the lower seat plate 9 in a direction perpendicular to the transport direction of the conveyor line 5.

[0039] like Figure 1 , 2 As shown, the connecting beam 13 is perpendicular to the blocking groove 12, and the connecting beam 13 can drive the blocking rod 11 to slide horizontally within the blocking groove 12. A sliding unit is provided at the lower end of the connecting beam 13, and the blocking rod 11 slides within the blocking groove 12 through the sliding unit. The sliding unit includes a slide rail 14 located below the blocking groove 12 and a slider 15 slidably connected to the slide rail 14. The connecting beam 13 is fixedly connected to the slider 15. The power output end of the blocking drive is connected to the slider 15 and drives the slider 15 to move up and down, thereby driving the blocking rod 11 to extend and retract vertically. In this embodiment, a support beam 28 is also provided at the lower end of the slider 15. The slider 15 is connected to the upper end of the support beam 28. The power output end of the blocking drive drives the slider 15 to move up and down through the support beam 28, thereby driving the blocking rod 11 to slide up and down. In this embodiment, the blocking drive is a cylinder.

[0040] like Figure 2 As shown, the limiting component 3 includes a limiting drive 16 located on the processing platform 1 and a limiting seat 17 driven by the limiting drive 16. The limiting seat 17 performs secondary horizontal centering of the middle seat plate tray 7 and the lower seat plate 9 on the outside of the blocking through groove 12 in the same direction as the blocking through groove 12, that is, along the transport direction of the conveyor line 3.

[0041] like Figure 2 , 3 As shown, the clamping assembly 6 includes multiple jaws 10. The middle seat plate 8 is clamped by the jaws 10, and a clearance is left between the flat wear-resistant plate and the jaws 10 to avoid damage to the flat wear-resistant plate. The clamping assembly 6 includes a clamping disk 18 connected to the power output end of the pressurizing assembly 4. The clamping disk 18 is connected to the middle of the upper plate 27. The jaws 10 are evenly distributed circumferentially on the side end face of the clamping disk 18. The clamping area of ​​the jaws 10 has a stepped structure, specifically including a lower step 19 for clamping the middle seat plate 8 and an upper step 20 for avoiding the flat wear-resistant plate. The upper step 20 is located inside the lower step 19 and is formed by opening upward from the inner end of the upper step 20. The clearance is located between the upper step 20 and the flat wear-resistant plate. The gripper 10 has a concave groove 21 on the upper part of the upper step 20. The side end face of the clamping disk 18 is provided with a receiving groove 22 for accommodating the gripper 10. The receiving groove 22 is provided with a boss 23 that is slidably matched and connected to the groove 21. The gripper 10 can slide radially along the clamping disk 18 in the groove 21 through the boss 23 to clamp the middle seat plate 8.

[0042] The upper end face of the gripper 10 has a cylindrical threaded groove 24 facing downwards, and the threaded groove 24 has an internal thread. The receiving groove 22 also includes a cylindrical telescopic groove 25 located above the gripper 10. The telescopic groove 25 is matched and located above the threaded groove 24. The telescopic groove 25 and the threaded groove 24 are provided with a telescopic screw (not shown in the figure). The telescopic screw can drive the gripper 10 to extend and retract radially along the clamping disk 18. In this embodiment, the gripper 10 includes four grippers evenly distributed circumferentially on the side of the clamping disk 18.

[0043] A method for automatically pressing the bearing plate of a bridge spherical steel bearing, wherein the pressing is performed by the aforementioned device, includes the following steps:

[0044] S1: Install the flat wear-resistant plate onto the upper end of the middle seat plate 8, and install the spherical wear-resistant plate onto the upper end of the lower seat plate 9;

[0045] S2: Place the middle seat plate 8 on the middle seat plate tray 7, and transport the middle seat plate tray 7 to the processing platform 1 via the conveyor line 5;

[0046] S3: Activate the blocking drive to drive the blocking rod 11 to move upward and extend it above the blocking through groove 12. Activate the clamping drive to drive the slider 15 to drive the blocking rod 11 to slide along the conveying direction of the conveyor line 5 and perform a horizontal centering of the middle seat plate tray 7.

[0047] S4: Start the limit drive 16 to drive the limit seat 17 to move toward the middle seat plate tray 7 and perform secondary horizontal centering of the middle seat plate tray 7 inside the blocking through groove 12 to achieve four-way horizontal centering of the middle seat plate tray 7.

[0048] S5: Start the press 26 to descend and clamp the middle seat plate 8 through the gripper 10, then start the press 26 to rise and drive the middle seat plate 8 to rise.

[0049] S6: Extend the blocking rod 11 downwards to below the blocking groove 12, retract the limiting seat 17 to the outside of the blocking groove 12, and transport the middle seat plate tray 7 to the outside of the processing platform 1 via the conveyor line 5.

[0050] S7: Following the conveying and centering method of the middle seat plate tray 7 in S2-S4, the lower seat plate 9 is conveyed to the processing platform 1 and horizontally aligned twice to achieve four-way horizontal alignment of the lower seat plate 9;

[0051] S8: Start the press 26 to descend. At this time, the clamping plate 18 and the jaws 10 drive the middle seat plate 8 to press down above the lower seat plate 9 and press it tightly onto the spherical wear-resistant plate. Thus, the installation of the middle seat plate 8 and the lower seat plate 9 is completed.

[0052] Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

[0053] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A device for automatic pressing of the bearing plate in a bridge spherical steel bearing, characterized in that, The assembly includes a processing platform (1), a blocking component (2) located below the processing platform (1), a limiting component (3) located on the processing platform (1), a pressurizing component (4) located above the processing platform (1), and a conveyor line (5) located on the processing platform (1) and between the limiting components (3); the power output end of the pressurizing component (4) is connected to a clamping component (6); the blocking component (2) horizontally centers the middle seat plate tray (7) and the lower seat plate (9) in a direction perpendicular to the transport direction of the conveyor line (5), and the limiting component (3) horizontally centers the middle seat plate tray (7) and the lower seat plate (9) in the transport direction of the conveyor line (5), so that during the pressing process, the blocking component (2) and the limiting component (3) jointly perform horizontal four-way positioning of the middle seat plate tray (7) and the lower seat plate (9). The clamping assembly (6) is used to clamp the middle seat plate (8) and includes multiple jaws (10). The middle seat plate (8) is clamped by the jaws (10) and there is a clearance between the flat wear-resistant plate and the jaws (10). The blocking assembly (2) includes a blocking drive and a blocking rod (11) arranged vertically. A blocking slot (12) is provided on the processing platform (1) above the blocking rod (11) along the transport direction of the conveyor line (5). The blocking slot (12) is located on both sides of the conveyor line (5). The blocking rod (11) is driven by the blocking drive to extend and retract in the blocking slot (12) to extend above the processing platform (1) to block and limit the middle seat plate tray (7) and the lower seat plate (9) or to retract below the processing platform (1) to make way for the transport of the middle seat plate (8) and the lower seat plate (9).

2. The device for automatic pressing of the bearing plate in a bridge spherical steel bearing according to claim 1, characterized in that, The blocking assembly (2) also includes a clamping drive and a connecting beam (13) connected to the lower part of the blocking rod (11). The clamping drive drives the connecting beam (13) to slide horizontally along the blocking groove (12) with the blocking rod (11) to align the center seat plate tray (7) and the lower seat plate (9) horizontally in a direction perpendicular to the transport direction of the conveyor line (5). The connecting beam (13) is perpendicular to the blocking groove (12), and the connecting beam (13) can drive the blocking rod (11) to slide horizontally in the blocking groove (12).

3. The device for automatic pressing of the bearing plate in a bridge spherical steel bearing according to claim 2, characterized in that, The lower end of the connecting beam (13) is provided with a sliding unit and the sliding unit drives the blocking rod (11) to slide in the blocking through groove (12); the sliding unit includes a slide rail (14) matched below the blocking through groove (12) and a slider (15) slidably connected to the slide rail (14), and the connecting beam (13) is fixedly connected to the slider (15); the power output end of the blocking drive is connected to the slider (15) and drives the blocking rod (11) to extend and retract as a whole by driving the slider (15) to move up and down.

4. The device for automatic pressing of the bearing plate in a bridge spherical steel bearing according to claim 3, characterized in that, The limiting component (3) includes a limiting drive (16) located on the processing platform (1) and a limiting seat (17) driven by the limiting drive (16). The limiting seat (17) performs secondary horizontal centering of the middle seat plate tray (7) and the lower seat plate (9) along the transport direction of the conveyor line (5) outside the blocking through groove (12).

5. The apparatus for automatic pressing of the bearing plate of a bridge spherical steel bearing according to any one of claims 1 to 4, characterized in that, The clamping assembly (6) includes a clamping disk (18) connected to the power output end of the pressurizing assembly (4). The jaws (10) are evenly distributed circumferentially on the side end face of the clamping disk (18). The clamping area of ​​the jaws (10) has a stepped structure, specifically including a lower step (19) for clamping the middle seat plate (8) and an upper step (20) for avoiding the flat wear-resistant plate. The upper step (20) is located inside the lower step (19) and is formed by opening upward from the inner end of the upper step (20).

6. The device for automatic pressing of the bearing plate in a bridge spherical steel bearing according to claim 5, characterized in that, The gripper (10) has a concave groove (21) on the upper part of the upper step (20), and a receiving groove (22) for accommodating the gripper (10) is provided on the side end face of the clamping disk (18); a boss (23) is provided in the receiving groove (22) and is slidably matched and connected in the groove (21). The gripper (10) can slide along the radial direction of the clamping disk (18) in the groove (21) through the boss (23) to clamp the middle seat plate (8).

7. The device for automatic pressing of the bearing plate of a bridge spherical steel bearing according to claim 6, characterized in that, The upper end face of the gripper (10) is provided with a cylindrical threaded groove (24) facing downward and the threaded groove (24) is provided with an internal thread. The receiving groove (22) also includes a cylindrical telescopic groove (25) located above the gripper (10). The telescopic groove (25) is matched and located above the threaded groove (24). The telescopic groove (25) and the threaded groove (24) are provided with telescopic screws, and the telescopic screws can drive the gripper (10) to extend and retract radially along the clamping plate (18).

8. The device for automatic pressing of the bearing plate of a bridge spherical steel bearing according to claim 7, characterized in that, The gripper (10) includes four circumferentially distributed on the side of the clamping plate (18); the pressurizing assembly (4) includes a press (26) and an upper plate (27) located at the power output end of the press (26), and the clamping plate (18) is connected to the middle of the upper plate (27).

9. A method for automatically pressing the bearing plate of a bridge spherical steel bearing, wherein the pressing is performed by the device of claim 8, characterized in that, Includes the following steps: S1: Install the flat wear-resistant plate onto the upper end of the middle seat plate (8), and install the spherical wear-resistant plate onto the upper end of the lower seat plate (9); S2: Place the middle seat plate (8) on the middle seat plate tray (7) and transport the middle seat plate tray (7) to the processing platform (1) via the conveyor line (5); S3: Activate the blocking drive to drive the blocking rod (11) to move upward and extend above the blocking through groove (12), activate the clamping drive to drive the slider (15) to drive the blocking rod (11) to slide along the conveying direction of the conveyor line (5) and perform a horizontal centering of the middle seat plate tray (7); S4: Start the limit drive (16) to drive the limit seat (17) to move toward the middle seat plate tray (7) and perform secondary horizontal centering of the middle seat plate tray (7) inside the blocking through groove (12) to achieve four-way horizontal centering of the middle seat plate tray (7); S5: Start the press (26) to descend and clamp the middle seat plate (8) with the gripper (10), then start the press (26) to rise and drive the middle seat plate (8) to rise; S6: Extend the blocking rod (11) downwards to below the blocking groove (12), retract the limiting seat (17) to the outside of the blocking groove (12), and transport the middle seat plate tray (7) to the outside of the processing platform (1) via the conveyor line (5); S7: According to the conveying and centering method of the middle seat plate tray (7) in S2-S4, the lower seat plate (9) is conveyed to the processing platform (1) and two horizontal centerings are performed to achieve four-way horizontal centering of the lower seat plate (9); S8: Start the press (26) to descend. At this time, the clamping plate (18) and the jaws (10) drive the middle seat plate (8) to press down above the lower seat plate (9) and press it tightly on the spherical wear-resistant plate. Thus, the installation of the middle seat plate (8) and the lower seat plate (9) is completed.

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