Turning device for railway bridge spherical support
By using an inverted lower support design and flexible block wiping technology, the problem of chip and cutting fluid accumulation inside the spherical surface is solved, enabling efficient turning of spherical bearings for railway bridges and ensuring the cleanliness and service life of the cutting tool and the lower support.
Patent Information
- Application Number
- CN202511658082.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-13
- Publication Date
- 2026-02-24
AI Technical Summary
In existing turning equipment for spherical bearings of railway bridges, chips tend to accumulate in the concave area of the spherical surface during the cutting process. After being wetted by cutting fluid, the chips adhere to the spherical surface of the lower bearing plate, affecting the machining quality and causing tool wear.
The inverted lower support design utilizes gravity to discharge chips and cutting fluid. Combined with flexible block wiping and sliding frame cleaning, it ensures that chips and cutting fluid flow out smoothly, reduces the amount of chips that the cutting tool comes into contact with, and ensures the cleanliness of the cutting tool and the surface of the lower support.
It effectively reduces wear on the surfaces of the cutting tool and the lower support, improves machining quality and tool life, and ensures turning results.
Smart Images
Figure CN121551647A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of intelligent manufacturing technology, and in particular to a turning device for spherical bearings of railway bridges. Background Technology
[0002] As a core component bearing the load of a railway bridge, the spherical bearing is generally composed of an upper bearing plate, a stainless steel plate, a flat polyethylene plate, a steel liner, a spherical polyethylene plate, and a lower bearing plate with a spherical recess. The machining accuracy of the upper spherical surface of the lower bearing directly affects the bearing's sealing performance, durability, and mechanical properties. With the development of intelligent manufacturing, the pre-set machining paths of turning devices are becoming increasingly diverse, making the turning devices for railway bridge spherical bearings more and more intelligent. In the existing turning process, the spherical surface is usually machined using a positive clamping method. During the cutting process, the chips generated tend to accumulate in the recessed area of the spherical surface. Furthermore, after the cutting fluid wets the chips, the chips generated during machining will adhere to the spherical surface of the lower bearing plate, forming an adhesion layer. This interferes with the subsequent cutting path of the turning tool, reduces the surface quality of the machined surface, and may even lead to abnormal tool wear. Summary of the Invention
[0003] In order to overcome the disadvantages pointed out in the background art above, the present invention provides a turning device for spherical bearings of railway bridges.
[0004] Technical solution: A turning device for spherical bearings of railway bridges includes a pneumatic chuck mounted on a machine bed, the pneumatic chuck being connected to an external air source, a rotating part being provided on the lower side of the pneumatic chuck, and clamping blocks evenly distributed in the circumferential direction being slidably connected to the lower side of the rotating part, the clamping blocks being slidably connected to limit pins, and a first elastic element being fixedly connected between the limit pins and adjacent clamping blocks; The bed is fixedly connected to a first electrically controlled push rod located below all the clamping blocks, and the telescopic part of the first electrically controlled push rod is fixedly connected to a support tray. The bed is equipped with an electromagnetic slide rail, and an electromagnetic slider is slidably connected inside the electromagnetic slide rail. The electromagnetic slider is fixedly connected to a connecting frame, and a second electrically controlled push rod is fixedly connected to the connecting frame. The telescopic part of the second electrically controlled push rod is fixedly connected to a tool holder located below all the clamping blocks. The tool holder is detachably connected to a lathe tool, and a liquid spray pipe is fixedly connected to the tool holder.
[0005] To further explain, the support tray is located below the rotating part, the axis of the support tray is collinear with the axis of the rotating part, and a recess is provided on the upper side of the support tray.
[0006] To further explain, the connecting frame is slidably connected to a sliding rod, the sliding rod is fixedly connected to a connecting rod, the connecting rod is slidably connected to a sliding pin, and the sliding pin is detachably connected to a flexible block.
[0007] To further explain, a second elastic element is fixedly connected between the sliding pin and the connecting rod.
[0008] To further explain, the thickness of the flexible block is greater than the thickness of the cutting tool, the distance from the center line of the flexible block to the rotation axis of the rotating part is L1, and the distance from the center line of the cutting tool to the rotation axis of the rotating part is L2, where L1 = L2.
[0009] To further explain, the telescopic part of the second electrically controlled push rod is fixedly connected to a first folding rod, the sliding rod is fixedly connected to a second folding rod, the first folding rod is fixedly connected to a first rack, the second folding rod is fixedly connected to a second rack, and the connecting frame is rotatably connected to a gear located between the first rack and the second rack, both the first rack and the second rack meshing with the gear.
[0010] To further explain, the length of the second rack on the second folding rod is greater than the length of the first rack on the first folding rod.
[0011] To further explain, the tool holder is slidably connected to a sliding frame, and a third elastic element is fixedly connected between the sliding frame and the tool holder. A limit rod is fixedly connected to the sliding frame, and a limit ring is fixedly connected to the rotating part. The limit ring is used to limit the limit rod.
[0012] To further explain, the limiting ring is provided with circumferentially distributed limiting portions, each of which is an arc-shaped notch with an upward concave center. The limiting portions are used to guide the limiting rod to adjust its position.
[0013] To further explain, the distance between the upper end of the sliding frame and the upper end of the cutting tool is equal to the vertical height of the limiting part.
[0014] Compared with the prior art, the present invention has the following advantages: 1. The present invention uses gravity to discharge the waste chips and cutting fluid accumulated in the spherical surface of the lower support by inverting the lower support, thereby reducing the probability that the waste chips will stick to the spherical surface and form an adhesion layer after being wetted by the cutting fluid, thus reducing the amount of waste chips that the cutting tool comes into contact with on the turning path, thereby reducing the probability that the cutting tool and the surface of the lower support will be worn by chips, and thus ensuring the normal use of the cutting tool and the grinding effect of the lower support; 2. The flexible block wipes away the chips and cutting fluid on the spherical surface of the lower support, allowing the chips and cutting fluid to flow downwards along the flexible block and scrape them off, thus ensuring the cleanliness of the lower support surface. By setting the size and position relationship between the flexible block and the cutting tool, the flexible block first wipes the spherical surface of the lower support layer by layer before the cutting tool performs layer-by-layer turning, thereby reducing the amount of chips that the cutting tool encounters during the layer-by-layer turning process and thus reducing the impact of chips on the turning process. 3. The sliding frame continuously moves back and forth to break up the chips adhering to the cutting tool, thereby maintaining the cleanliness of the cutting tool surface and reducing the impact of chips on the turning effect. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the parts inside the bed of the present invention; Figure 3 This is a three-dimensional structural diagram of the pneumatic chuck of the present invention; Figure 4 This is a three-dimensional structural diagram of the clamping block of the present invention; Figure 5 This is an exploded three-dimensional view of the pneumatic chuck and connecting frame of the present invention. Figure 6 This is a three-dimensional structural diagram of the clamping block and limiting pin of the present invention; Figure 7 This is a three-dimensional structural diagram of the tool holder and lathe tool of the present invention; Figure 8 This is a three-dimensional structural diagram of the flexible block of the present invention; Figure 9 This is a three-dimensional structural diagram of the first and second folding rods of the present invention; Figure 10 This is a three-dimensional structural diagram of the limiting ring of the present invention; Figure 11 This is a three-dimensional structural diagram of the limiting rod of the present invention.
[0016] In the diagram: 1. Bed, 2. Pneumatic chuck, 3. Rotating part, 4. Clamping block, 5. Limit pin, 6. First electrically controlled push rod, 7. Support plate, 8. Electromagnetic slider, 9. Connecting frame, 10. Second electrically controlled push rod, 11. Tool post, 12. Lathe tool, 13. Spray pipe, 14. Sliding rod, 15. Connecting rod, 16. Sliding pin, 17. Flexible block, 18. First folding rod, 19. Second folding rod, 20. Gear, 22. Sliding frame, 23. Limiting rod, 24. Limiting ring, 25. Limiting part. Detailed Implementation
[0017] The present invention will be further described in detail below with reference to specific embodiments.
[0018] Example 1 This embodiment discloses a turning device for spherical bearings of railway bridges, used to turn the spherical surface of the lower support of the spherical bearing and reduce the accumulation of waste chips and cutting fluid in the spherical surface.
[0019] like Figures 1-7As shown, the machine includes a pneumatic chuck 2 mounted on the bed 1, which is connected to an external air source. The bed 1 is equipped with a control terminal, and both the pneumatic chuck 2 and the external air source are electrically connected to the control terminal. The lower support spherical surface shown in the figure is the state after turning. When not cutting, the lower side of the lower support is a complete plane. A rotating part 3 is provided on the lower side of the pneumatic chuck 2, and clamping blocks 4 are slidably connected to the lower side of the rotating part 3. The rotating part 3 is used to drive all the clamping blocks 4 to rotate. The power required for the rotation of the rotating part 3 is an existing structure (such as driven by a motor), which is not shown in the figure. The clamping blocks 4 are slidably connected to limit pins 5. The limit pins 5 have inclined surfaces on both the upper and lower sides. A first elastic element is fixedly connected between the limit pin 5 and the adjacent clamping block 4. The first elastic element between the limit pin 5 and the adjacent clamping block 4 is a compression spring. A first electrically controlled push rod 6 located below all the clamping blocks 4 is fixedly connected to the bed 1. The first electrically controlled push rod 6 is electrically connected to the control terminal. The telescopic part of the first electrically controlled push rod 6 is fixedly connected to a support tray 7. When the lower support needs to be turned, the lower support is placed face down on the support tray 7. Then, the telescopic part of the first electrically controlled push rod 6 pushes the support tray 7 upward. The support tray 7 drives the lower support to move upward. The lower support moves and presses the inclined surface under all the limit pins 5. The limit pins 5 are pressed and move. The first elastic element between the limit pin 5 and the adjacent clamping block 4 is compressed. After the lower support passes through... After all the limit pins 5 are engaged, the first elastic element between all the limit pins 5 and the adjacent clamping blocks 4 rebounds. All the limit pins 5 are supported by the upper inclined surface of the lower support. The support tray 7 is located below the rotating part 3. The axis of the support tray 7 is collinear with the axis of the rotating part 3. The upper side of the support tray 7 is provided with a recess to reduce the contact area between the support tray 7 and the lower support. The recess of the support tray 7 is used to accumulate liquid and waste, so as to reduce the probability of contact between the lower support and the liquid and waste in the recess when the lower support is placed on the support tray 7 after the surface of the lower support is polished. The bed 1 is provided with an electromagnetic slide rail electrically connected to the control terminal. An electromagnetic slider 8 is slidably connected in the electromagnetic slide rail of the bed 1. The electromagnetic slider 8 is fixedly connected to a connecting... The connecting frame 9 is fixedly connected to a second electrically controlled push rod 10, which is electrically connected to the control terminal. The telescopic part of the second electrically controlled push rod 10 is fixedly connected to a tool holder 11 located below all clamping blocks 4. The tool holder 11 is detachably connected to a cutting tool 12. The height of the connecting frame 9, the second electrically controlled push rod 10, the tool holder 11, and the cutting tool 12 can be adjusted by moving the electromagnetic slider 8 up and down. The horizontal position of the tool holder 11 and the cutting tool 12 can be adjusted by extending and retracting the telescopic part on the second electrically controlled push rod 10. The tool holder 11 is fixedly connected to a spray pipe 13, which is connected to an external liquid supply device. The external liquid supply device is electrically connected to the control terminal. The external liquid supply device is not shown in the figure. The external liquid supply device is used to supply cutting fluid to the spray pipe 13.
[0020] The working process of the turning device for the spherical bearing of the railway bridge in this embodiment is as follows: When the operator needs to use this device to turn the lower support of the spherical support, the lower support is placed on the support tray 7 with the face to be turned facing down. The operator activates the first electric push rod 6 through the control terminal. The telescopic part of the first electric push rod 6 pushes the support tray 7 upward, and the support tray 7 drives the lower support upward (at this time, the operator activates the electromagnetic slider 8 and the second electric push rod 10 through the control terminal to adjust the height and horizontal position of the tool holder 11 and the cutting tool 12 so that the tool holder 11 and the cutting tool 12 do not obstruct the vertical movement of the lower support). The lower support is pushed to the upper side of all the limit pins 5. Then, the operator activates the pneumatic chuck 2 and the external air source through the control terminal so that all the clamping blocks 4 clamp the lower support together. All the limit pins 5 support the lower support, and the axis of the lower support is collinear with the rotation axis of the rotating part 3, thus achieving the clamping of the lower support.
[0021] After the support is clamped, the control terminal shuts off the pneumatic chuck 2 and the external air source, and controls the telescopic part of the first electric push rod 6 to reset. The telescopic part of the first electric push rod 6 drives the support plate 7 to move downward and reset. Then, the operator shuts off the first electric push rod 6 through the control terminal and turns on the electromagnetic slider 8 and the second electric push rod 10. The electromagnetic slider 8 moves up and down, and the second electric push rod 10 adjusts the height and horizontal position of the cutting tool 12 by extending and retracting its telescopic part, so that the cutting tool 12 is close to the surface to be machined on the lower support.
[0022] Once the cutting tool 12 is pressed against the surface to be machined on the lower support, the operator controls the rotating part 3 to rotate. At the same time, the electromagnetic slider 8 moves up and down reciprocally, and the telescopic part of the second electric control push rod 10 extends and retracts in real time to adjust the height and horizontal position of the cutting tool 12. As the rotating part 3 rotates, the rotating part 3 drives the lower support to rotate through all the clamping blocks 4 and all the limit pins 5. The cutting tool 12 moves horizontally and vertically continuously, and the lower support moves relative to the cutting tool 12. The cutting tool 12 machines the surface of the lower support layer by layer.
[0023] During the turning of the lower support, the operator activates the external fluid supply device via the control terminal. The external fluid supply device supplies cutting fluid to the spray pipe 13, which sprays the cutting fluid between the cutting tool 12 and the lower support. During the turning of the lower support, the cutting fluid cools the cutting tool 12. By inverting the lower support so that the face being turned faces downwards, gravity is used to discharge the chips and cutting fluid accumulated in the spherical surface of the lower support. The cutting fluid carries some of the chips out of the spherical surface of the lower support, reducing the probability that the chips will stick to the spherical surface after being wetted by the cutting fluid. This reduces the amount of chips that the cutting tool 12 comes into contact with, thereby reducing the probability of chip wear on the surfaces of the cutting tool 12 and the lower support, and thus ensuring the normal use of the cutting tool 12 and the grinding effect of the lower support.
[0024] After the lower support is machined, the operator activates the first electrically controlled push rod 6 via the control terminal. The telescopic end of the first electrically controlled push rod 6 extends and moves the support tray 7 upward. The support tray 7 holds the machined lower support. Then, the operator activates the pneumatic chuck 2 and the external air source via the control terminal, causing all clamping blocks 4 to move. All clamping blocks 4 gradually move and lose their clamping on the lower support. The clamping blocks 4 move the limit pins 5, and all limit pins 5 no longer hold the lower support, so the lower support is no longer clamped. The telescopic end of the first electrically controlled push rod 6 moves the support tray 7 downward. The support tray 7 supports the lower support and moves downward. The operator collects the machined lower support. Then, the operator controls the pneumatic chuck 2 to reset via the control terminal, causing the clamping blocks 4 to reset the limit pins 5. Then, the operator shuts off the pneumatic chuck 2, the external air source, and the first electrically controlled push rod 6 via the control terminal. Finally, the above steps are repeated to machine the next lower support.
[0025] When the operator needs to stop using this device, the operator shuts off the pneumatic chuck 2, external air source, first electrically controlled push rod 6, electromagnetic slider 8 and second electrically controlled push rod 10 through the control terminal, and finally cleans the device for the next use.
[0026] Example 2 This embodiment discloses a turning device for spherical bearings of railway bridges. Based on Embodiment 1, it also has the function of further cleaning the residual waste chips inside the spherical surface of the lower bearing.
[0027] like Figures 3-5 and Figure 8 As shown, the connecting frame 9 is slidably connected to the sliding rod 14, the sliding rod 14 is fixedly connected to the connecting rod 15, the connecting rod 15 is slidably connected to the sliding pin 16, and the sliding pin 16 is detachably connected to the flexible block 17. The flexible block 17 can be removed from the sliding pin 16 for easy replacement. The flexible block 17 is used to wipe the surface of the lower support to reduce the amount of debris accumulation on the surface of the lower support. The thickness of the flexible block 17 is greater than the thickness of the cutting tool 12. The distance from the center line of the flexible block 17 to the rotation axis of the rotating part 3 is L1, and the distance from the center line of the cutting tool 12 to the rotation axis of the rotating part 3 is L2, L1 = L2. When the cutting tool 12 is turning the surface of the lower support, the flexible block 17 wipes the inner and outer rings of the turning position on the lower support in advance.
[0028] A second elastic element is fixed between the sliding pin 16 and the connecting rod 15. The second elastic element is a compression spring. When the flexible block 17 is pressed against the surface of the lower support, the second elastic element between the sliding pin 16 and the connecting rod 15 is compressed. Through the deformation of the second elastic element, the flexible block 17 adapts to the spherical surface of the lower support to ensure that the flexible block 17 always fits the spherical surface of the lower support.
[0029] like Figure 5 and Figure 9 As shown, the telescopic part of the second electrically controlled push rod 10 is fixedly connected to the first folding rod 18, and the sliding rod 14 is fixedly connected to the second folding rod 19. The first folding rod 18 is fixedly connected to the first rack, and the second folding rod 19 is fixedly connected to the second rack. The connecting frame 9 is rotatably connected to the gear 20 located between the first rack and the second rack. Both the first rack and the second rack mesh with the gear 20. When the telescopic part of the second electrically controlled push rod 10 drives the first folding rod 18 to move, the second folding rod 19 is transmitted through the first rack, the gear 20, and the second rack. The first folding rod 18 and the second folding rod 19 are moved in opposite directions or in opposite directions. The length of the second rack on the second folding rod 19 is greater than the length of the first rack on the first folding rod 18. When the flexible block 17 moves close to the axis of the lower support, the first rack of the first folding rod 18 loses engagement with the gear 20. When the leftmost tooth of the first rack engages with the gear 20, the rightmost tooth of the second rack engages with the gear 20. When the rightmost tooth of the first rack loses engagement with the gear 20, the second rack still engages with the gear 20.
[0030] The working process of this embodiment follows that of Embodiment 1, and is described in detail as follows: During the rotation of the lower support driven by the rotating part 3, the rotating part 3 drives the lower support to rotate through all the clamping blocks 4 and all the limiting pins 5. The lower support is in contact with the flexible block 17. The flexible block 17 wipes the waste chips and cutting fluid in the spherical surface of the lower support, so that the waste chips and cutting fluid on the spherical surface of the lower support flow downward along the flexible block 17 to ensure the cleanliness of the lower support surface, reduce the probability of chip wear on the cutting tool 12 and the surface of the lower support, and thus ensure the turning effect of the lower support surface.
[0031] During the turning of the lower support, the second electrically controlled push rod 10 adjusts the horizontal position of the cutting tool 12 by reciprocating the extension and retraction of its telescopic part. When the telescopic part of the second electrically controlled push rod 10 moves, it drives the first rack to move through the first folding rod 18. The first rack of the first folding rod 18 drives the second rack of the second folding rod 19 through the gear 20. The second folding rod 19 moves and drives the sliding rod 14 to move. The telescopic part of the second electrically controlled push rod 10 and the sliding rod 14 move synchronously in opposite directions or in opposite directions. The second electrically controlled push rod 10 drives the cutting tool 12 to move through the tool holder 11. The sliding rod 14 drives the flexible block 17 to move through the connecting rod 15 and the sliding pin 16, so that the cutting tool 12 and the flexible block 17 move synchronously in opposite directions or in opposite directions. Taking the cutting tool 12 moving from the outside to the inside of the lower support spherical surface as an example, the flexible block 17 will also move from the outside to the inside of the lower support spherical surface. Since the thickness of the flexible block 17 is greater than the thickness of the cutting tool 12, the flexible block 17 will first wipe the spherical surface of the lower support layer by layer before the cutting tool 12 will turn the spherical surface of the lower support layer by layer, so as to reduce the amount of waste chips encountered by the cutting tool 12 during the layer-by-layer turning process, thereby reducing the impact of waste chips on the turning process.
[0032] When the flexible block 17 moves to the right to its limit position, the flexible block 17 does not coincide with the axis of the lower support spherical surface. At this time, the first rack of the first folding rod 18 moves to disengage from the gear 20, preventing the flexible block 17 from contacting the cutting tool 12 when the cutting tool 12 moves to the axis of the lower support spherical surface.
[0033] Example 3 This embodiment discloses a turning device for spherical bearings of railway bridges, which is a further improvement on embodiment 2.
[0034] like Figure 5 , Figure 10 and Figure 11 As shown, a sliding frame 22 is slidably connected to the tool holder 11. A third elastic element is fixed between the sliding frame 22 and the tool holder 11. The third elastic element between the sliding frame 22 and the tool holder 11 is a compression spring. A limit rod 23 is fixedly connected to the sliding frame 22, and a limit ring 24 is fixedly connected to the rotating part 3. The limit ring 24 is used to limit the limit rod 23. When the limit ring 24 presses down on the limit rod 23, the upper end of the sliding frame 22 is lower than the upper end of the cutting tool 12, and the third elastic element between the sliding frame 22 and the tool holder 11 is in a compressed state. The limit ring 24 is provided with circumferential... The limiting part 25 is a concave arc-shaped notch in the middle. The distance between the upper end of the sliding frame 22 and the upper end of the cutting tool 12 is equal to the vertical height of the limiting part 25. The limiting part 25 is used to guide the limiting rod 23 to adjust the position of the limiting rod 23. When the limiting ring 24 rotates, the limiting part 25 rotates to contact the limiting rod 23. The third elastic element between the sliding frame 22 and the tool holder 11 deforms, causing the limiting rod 23 to move up and down along the limiting part 25. The upper part of the sliding frame 22 has the same thickness as the cutting tool 12.
[0035] The working process of this embodiment follows that of embodiment 2, and is described in detail as follows: During the rotation of the rotating part 3, the rotating part 3 drives the limiting ring 24 to rotate, and the limiting ring 24 drives all the limiting parts 25 to rotate. When the limiting part 25 rotates to contact the limiting rod 23, the third elastic element between the sliding frame 22 and the tool holder 11 extends, causing the limiting rod 23 to move upward along the limiting part 25. The limiting rod 23 drives the sliding frame 22 to move upward. The sliding frame 22 wipes the tool holder 11 and the cutting tool 12. The sliding frame 22 crushes the debris adhering to the cutting tool 12. After the upper end of the sliding frame 22 contacts the lower support.
[0036] After the sliding frame 22 breaks the chips adhering to the cutting tool 12, the limiting ring 24 drives all the limiting parts 25 to rotate. The limiting parts 25 gradually rotate until they lose contact with the limiting rod 23. During this process, the limiting rod 23 is squeezed downward by the limiting parts 25. The limiting rod 23 drives the sliding frame 22 to move downward. The third elastic element between the sliding frame 22 and the tool holder 11 is compressed and stores force. This process is repeated. The sliding frame 22 moves back and forth continuously and breaks the chips adhering to the cutting tool 12 to maintain the cleanliness of the surface of the cutting tool 12 and reduce the impact of chips on the turning effect.
[0037] When the operator needs to stop using this device, the operator shuts off the pneumatic chuck 2, external air source, first electrically controlled push rod 6, electromagnetic slider 8 and second electrically controlled push rod 10 through the control terminal, and finally cleans the device for the next use.
[0038] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. A turning device for spherical bearings of railway bridges, characterized in that, It includes a pneumatic chuck (2) mounted on the bed (1), the pneumatic chuck (2) being connected to an external air source, a rotating part (3) being provided on the lower side of the pneumatic chuck (2), and a clamping block (4) circumferentially evenly distributed slidably connected to the lower side of the rotating part (3), the clamping block (4) being slidably connected to a limit pin (5), and a first elastic element being fixed between the limit pin (5) and the adjacent clamping block (4); The bed (1) is fixedly connected to a first electrically controlled push rod (6) located below all the clamping blocks (4), and the telescopic part of the first electrically controlled push rod (6) is fixedly connected to a support tray (7). The bed (1) is provided with an electromagnetic slide rail, and an electromagnetic slider (8) is slidably connected in the electromagnetic slide rail of the bed (1). The electromagnetic slider (8) is fixedly connected to a connecting frame (9). The connecting frame (9) is fixedly connected to a second electrically controlled push rod (10). The telescopic part of the second electrically controlled push rod (10) is fixedly connected to a tool holder (11) located below all the clamping blocks (4). The tool holder (11) is detachably connected to a lathe tool (12). The tool holder (11) is fixedly connected to a spray pipe (13).
2. The turning device for a spherical bearing of a railway bridge according to claim 1, characterized in that, The support tray (7) is located below the rotating part (3), the axis of the support tray (7) is collinear with the axis of the rotating part (3), and the upper side of the support tray (7) is provided with a recess.
3. The turning device for a spherical bearing of a railway bridge according to claim 1, characterized in that, The connecting frame (9) is slidably connected to a sliding rod (14), the sliding rod (14) is fixedly connected to a connecting rod (15), the connecting rod (15) is slidably connected to a sliding pin (16), and the sliding pin (16) is detachably connected to a flexible block (17).
4. The turning device for spherical bearings of railway bridges according to claim 3, characterized in that, A second elastic element is fixedly connected between the sliding pin (16) and the connecting rod (15).
5. A turning device for spherical bearings of railway bridges according to claim 3, characterized in that, The thickness of the flexible block (17) is greater than the thickness of the cutting tool (12). The distance from the center line of the flexible block (17) to the rotation axis of the rotating part (3) is L1, and the distance from the center line of the cutting tool (12) to the rotation axis of the rotating part (3) is L2, where L1 = L2.
6. A turning device for spherical bearings of railway bridges according to claim 3, characterized in that, The telescopic part of the second electrically controlled push rod (10) is fixedly connected to the first folding rod (18), the sliding rod (14) is fixedly connected to the second folding rod (19), the first folding rod (18) is fixedly connected to the first rack, the second folding rod (19) is fixedly connected to the second rack, and the connecting frame (9) is rotatably connected to the gear (20) located between the first rack and the second rack, and both the first rack and the second rack mesh with the gear (20).
7. A turning device for spherical bearings of railway bridges according to claim 6, characterized in that, The length of the second rack on the second folding rod (19) is greater than the length of the first rack on the first folding rod (18).
8. A turning device for spherical bearings of railway bridges according to claim 1, characterized in that, The tool holder (11) is slidably connected to a sliding frame (22), and a third elastic element is fixed between the sliding frame (22) and the tool holder (11). The sliding frame (22) is fixedly connected to a limiting rod (23), and the rotating part (3) is fixedly connected to a limiting ring (24). The limiting ring (24) is used to limit the limiting rod (23).
9. A turning device for a spherical bearing of a railway bridge according to claim 8, characterized in that, The limiting ring (24) is provided with a circumferentially distributed limiting part (25). The limiting part (25) is an arc-shaped notch with an upward concave center. The limiting part (25) is used to guide the limiting rod (23) to adjust the position of the limiting rod (23).
10. A turning device for a spherical bearing of a railway bridge according to claim 9, characterized in that, The distance between the upper end of the sliding frame (22) and the upper end of the cutting tool (12) is equal to the vertical height of the limiting part (25).