Device for replacing yaw calipers

Abstract

The utility model relates to a device for replacing yaw calipers, which comprises a lifting workbench, a lifting structure and a lifting device, the lower end of the lifting structure is arranged on the lifting workbench, and the lifting device is detachably connected with the upper end of the lifting structure; and the lifting device is provided with a positioning hole and a positioning surface. Through the modular design of the lifting workbench, the lifting structure and the lifting device, quick disassembly and assembly are achieved, transportation and field assembly are facilitated, the lifting device is adjusted to a proper position through the lifting structure, the yaw calipers are disassembled and assembled, the convenience and stability of the work of replacing the yaw calipers are improved, and the working efficiency is improved. The labor intensity and the safety risk of manually carrying the yaw calipers are reduced; meanwhile, the lifting device is detachably connected with the lifting structure, different lifting devices can be replaced according to calipers of different models, and the applicability of the device is improved; by arranging the positioning hole and the positioning surface on the lifting device, the yaw calipers can be quickly positioned, and the efficiency of replacing the yaw calipers is improved.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine auxiliary equipment technology, specifically to a device for replacing yaw calipers. Background Technology

[0002] Yaw brake calipers for wind turbine generators are generally made of steel, and a set of yaw brake calipers typically weighs over 150 kg. Replacement is necessary if the caliper body is cracked, the piston is stuck or has abnormal return, the high-strength bolts are broken and cannot be removed, the threads are stripped or corroded and cannot be disassembled, or the caliper mounting flange is deformed due to uneven bolt preload. Because of their weight, they are too heavy for personnel to move, and large tools are difficult to use in confined spaces. Currently, replacing yaw calipers requires manual lifting for disassembly and installation, which is time-consuming and labor-intensive. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a device for changing yaw calipers that is flexible, simple, convenient, time-saving and labor-saving.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A device for replacing yaw calipers includes a lifting worktable, a lifting structure and a lifting device. The lower end of the lifting structure is disposed on the lifting worktable, and the lifting device and the upper end of the lifting structure are detachably connected. The lifting device is provided with a positioning hole and a positioning surface.

[0005] The beneficial effects of this utility model are as follows: The modular design of the lifting worktable, lifting structure, and lifting device enables rapid assembly and disassembly, facilitating transportation and on-site assembly. The lifting structure allows the lifting device to be adjusted to a suitable position for disassembly and installation of the yaw caliper, improving the device's flexibility and the convenience and stability of yaw caliper replacement. This reduces the labor intensity and safety risks associated with manually handling yaw calipers, further improving work efficiency. Simultaneously, the detachable connection between the lifting device and the lifting structure allows for the replacement of different sized lifting devices with different caliper models, enhancing the device's applicability. Furthermore, the positioning holes and positioning surfaces on the lifting device—the positioning surface for contact with one side of the yaw caliper and the positioning hole for positioning with the bolts securing the yaw caliper—improve the efficiency of yaw caliper replacement through rapid positioning.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the lifting device includes a lifting plate and a connecting plate, with the upper ends of the lifting plate and the connecting plate fixedly connected, and the lower end of the connecting plate detachably connected to the lifting structure.

[0008] The beneficial effects of adopting the above-mentioned further solution are as follows: the lifting device consists of a lifting plate and a connecting plate. The upper ends of the lifting plate and the connecting plate are fixedly connected, which ensures the structural stability of the lifting device and can reliably support the yaw caliper. The lower end of the connecting plate is detachably connected to the lifting structure, which facilitates the adaptation to different models of calipers or quick maintenance, and simplifies the assembly process of the lifting device.

[0009] Furthermore, the lifting plate is provided with an inclined plate, the inclined plate has the positioning surface, and the lifting plate is provided with at least two through holes, the through holes being the positioning holes.

[0010] The beneficial effects of adopting the above-mentioned further solution are as follows: by setting an inclined plate on the lifting plate, the inclined plate has a positioning surface that can adapt to and fit tightly with the inclined positioning surface of the yaw caliper, and the yaw caliper is positioned through the through hole set on the lifting plate. During the replacement of the yaw caliper, the through hole can be used to pass through the bolt for fixing the yaw caliper, which facilitates fixing the yaw caliper to the lifting plate. It is also convenient to disassemble or install the yaw caliper through the support of the lifting plate, which further improves the safety and reliability of the operation.

[0011] Furthermore, the lifting work platform includes a support platform and four lifting support rods, with the upper ends of the four lifting support rods fixedly connected to the lower end of the support platform.

[0012] The beneficial effects of adopting the above-mentioned further solution are as follows: by setting up a support platform and four lifting support rods, the upper ends of the four lifting support rods are fixedly connected to the lower end of the support platform, and the combination of the four lifting support rods and the support platform forms a stable support foundation, ensuring the balance of the worktable during the lifting process and avoiding tipping due to uneven load; the lifting support rods can adjust the height of the support platform to adapt to the replacement needs of yaw calipers at different heights, making the whole device more versatile and adaptable.

[0013] Furthermore, the four lifting support rods are arranged in a rectangular array and are located at the four corners of the lower end of the support platform.

[0014] The beneficial effects of adopting the above-mentioned further solution are: by distributing the four lifting support rods in a rectangular array at the four corners of the lower end of the support platform, the lifting platform is subjected to more uniform force, which can maintain better stability when carrying the yaw caliper, effectively preventing the lifting platform from tilting or even falling over due to uneven force, and ensuring the safe operation of the replacement.

[0015] Furthermore, a connecting rod is provided between every two adjacent lifting support rods.

[0016] The beneficial effects of adopting the above-mentioned further solution are: by setting connecting rods, the overall structural strength and stability of the lifting worktable are enhanced, the structural rigidity between the lifting support rods is further strengthened, and the safety of replacing yaw calipers is further guaranteed.

[0017] Furthermore, the lifting support rod includes a first support rod and a second support rod, the first support rod and the second support rod are threaded together, and the upper end of the first support rod is fixedly connected to the lower end of the bearing platform.

[0018] The beneficial effects of adopting the above-mentioned further solution are as follows: by setting the lifting support rod as a first section support rod and a second section support rod, and connecting the first section support rod and the second section support rod with threads, the length adjustment of the lifting support rod is more convenient. The upper end of the first section support rod is fixedly connected to the lower end of the bearing platform, so the height of the lifting work platform can be flexibly adjusted according to the actual operation requirements, which can meet the replacement of yaw calipers at different installation positions and heights, and improve the practicality of the device.

[0019] Furthermore, the lifting structure includes a fixed base, in which a worm, a turbine, and a lead screw are disposed. The worm meshes with the turbine for transmission, the turbine is sleeved on the outside of the lead screw and is threadedly connected to the lead screw, and the upper end of the lead screw is detachably connected to the lifting device.

[0020] The beneficial effects of adopting the above-mentioned further solution are as follows: the worm gear drives the turbine to rotate, and the rotation of the turbine drives the lead screw to rise or fall, thereby realizing the lifting of the lifting device; at the same time, the worm gear and turbine transmission has a self-locking function, which can prevent the lifting device from falling down on its own due to external force after it has been raised or lowered to a suitable height, ensuring the positional stability of the yaw caliper during the replacement process and improving the safety of operation.

[0021] Furthermore, a guide cylinder is provided at the lower end of the lifting worktable. The guide cylinder has a prism-shaped inner hole. A prism-shaped guide block adapted to the shape of the prism-shaped inner hole is fixed at the lower end of the lead screw. The prism-shaped guide block is slidably disposed in the prism-shaped inner hole.

[0022] The beneficial effects of adopting the above-mentioned further solution are as follows: by setting a guide cylinder with a prism-shaped inner hole, a prism-shaped guide block that matches the shape of the prism-shaped inner hole is fixed at the lower end of the lead screw. The prism-shaped guide block is slidably set in the prism-shaped inner hole, thereby constraining the movement trajectory of the lead screw, ensuring that the lead screw moves in a straight line during the lifting process, avoiding deviation or shaking, making the lifting of the lifting device more stable and accurate, and further improving the accuracy and safety of the yaw caliper replacement operation.

[0023] Furthermore, a drive handwheel is fixedly installed at one end of the worm gear.

[0024] The advantages of adopting the above-mentioned further solution are: a drive handwheel is fixedly installed at one end of the worm gear, and the worm gear can be driven to rotate by rotating the drive handwheel, thereby driving the turbine and the lead screw to work, realizing the lifting of the lifting device. The operation is simple, no complex power equipment is required, and it is convenient for operators to control in the narrow working space of the wind turbine generator set, reducing equipment costs and operating difficulty, and improving the convenience of replacement operations. Attached Figure Description

[0025] Figure 1 A side view showing the usage state of the yaw caliper replacement device of this utility model;

[0026] Figure 2 Another schematic diagram (front view) showing the usage state of the yaw caliper replacement device of this utility model;

[0027] Figure 3 This is a schematic diagram of the lifting plate of the yaw caliper replacement device of this utility model;

[0028] Figure 4 A schematic diagram of the lifting structure of the yaw caliper replacement device of this utility model;

[0029] Figure 5 This is a top view of the yaw caliper of this utility model.

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 1. Yaw caliper; 2. Bolt; 3. Yaw brake disc; 110. Support platform; 120. Lifting support rod; 121. First section support rod; 122. Second section support rod; 130. Connecting rod; 210. Fixed base; 220. Worm gear; 230. Turbine; 240. Lead screw; 250. Guide cylinder; 260. Drive handwheel; 310. Lifting plate; 311. Through hole; 312. Inclined plate; 320. Connecting plate. Detailed Implementation

[0032] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0033] like Figures 1-5 As shown, this embodiment provides a device for replacing yaw calipers, including a lifting platform, a lifting structure, and a lifting device. The lower end of the lifting structure is disposed on the lifting platform, and the lifting device and the upper end of the lifting structure are detachably connected. The lifting device is provided with a positioning hole and a positioning surface.

[0034] The modular design of the lifting platform, lifting structure, and lifting device enables rapid assembly and disassembly, facilitating transportation and on-site assembly. The lifting structure allows the lifting device to be adjusted to a suitable position, enabling the disassembly and installation of the yaw caliper 1. This enhances the flexibility of the device and improves the convenience and stability of replacing the yaw caliper 1, reducing the labor intensity and safety risks associated with manually handling the yaw caliper 1 and further improving work efficiency. Simultaneously, the detachable connection between the lifting device and the lifting structure allows for the replacement of different sized lifting devices with different caliper models, increasing the device's applicability. By setting positioning holes and positioning surfaces on the lifting device—the positioning surface for contact with one side of the yaw caliper 1 and the positioning holes for positioning with the bolts 2 securing the yaw caliper 1—rapid positioning improves the efficiency of replacing the yaw caliper 1.

[0035] Based on any of the above technical solutions, the lifting device includes a lifting plate 310 and a connecting plate 320. The upper ends of the lifting plate 310 and the connecting plate 320 are fixedly connected, and the lower end of the connecting plate 320 is detachably connected to the lifting structure.

[0036] The lifting device consists of a lifting plate 310 and a connecting plate 320. The upper ends of the lifting plate 310 and the connecting plate 320 are fixedly connected to ensure the structural stability of the lifting device and can reliably support the yaw caliper 1. The lower end of the connecting plate 320 is detachably connected to the lifting structure, which facilitates the adaptation to different models of calipers or quick maintenance, and simplifies the assembly process of the lifting device.

[0037] Based on any of the above technical solutions, the lifting plate 310 is provided with an inclined plate 312, the inclined plate 312 has the positioning surface, and the lifting plate 310 is provided with at least two through holes 311, the through holes 311 being the positioning holes.

[0038] By setting an inclined plate 312 on the lifting plate 310, the inclined plate 312 has a positioning surface that can adapt to and fit tightly with the inclined positioning surface of the yaw caliper 1. The yaw caliper 1 is positioned through the through hole 311 set on the lifting plate 310. During the replacement of the yaw caliper 1, the through hole 311 can be used to pass through the bolt 2 for fixing the yaw caliper 1, so as to fix the yaw caliper 1 on the lifting plate 310. It is also convenient to disassemble or install the yaw caliper 1 through the support of the lifting plate 310, which further improves the safety and reliability of the operation.

[0039] Specifically, the tilting plate 312 is a curved surface with an arc to adapt to the tilting positioning surface of the yaw caliper 1.

[0040] Based on any of the above technical solutions, the lifting work platform includes a support platform 110 and four lifting support rods 120, with the upper ends of the four lifting support rods 120 fixedly connected to the lower end of the support platform 110.

[0041] By setting up a support platform 110 and four lifting support rods 120, the upper ends of the four lifting support rods 120 are fixedly connected to the lower end of the support platform 110. Thus, the combination of the four lifting support rods 120 and the support platform 110 forms a stable support foundation, ensuring the balance of the worktable during lifting and avoiding tipping due to uneven load. The lifting support rods 120 can adjust the height of the support platform 110 to adapt to the replacement needs of yaw calipers 1 at different heights, making the whole device more versatile and adaptable.

[0042] Based on any of the above technical solutions, the four lifting support rods 120 are arranged in a rectangular array and are located at the four corners of the lower end of the support platform 110.

[0043] By distributing the four lifting support rods 120 in a rectangular array at the four corners of the lower end of the support platform 110, the lifting platform is subjected to more uniform force, which can maintain better stability when bearing the yaw caliper 1. This effectively prevents the lifting platform from tilting or even falling over due to uneven force, ensuring the safe operation of the replacement.

[0044] Based on any of the above technical solutions, a connecting rod 130 is provided between every two adjacent lifting support rods 120.

[0045] By setting the connecting rod 130, the overall structural strength and stability of the lifting worktable are enhanced, the structural rigidity between the lifting support rods 120 is further strengthened, and the safety of replacing the yaw caliper 1 is further guaranteed.

[0046] Based on any of the above technical solutions, the lifting support rod 120 includes a first support rod 121 and a second support rod 122, the first support rod 121 and the second support rod 122 are threaded together, and the upper end of the first support rod 121 is fixedly connected to the lower end of the bearing platform 110.

[0047] By setting the lifting support rod 120 as a first support rod 121 and a second support rod 122, and threading the first support rod 121 and the second support rod 122 together, the length adjustment of the lifting support rod 120 becomes more convenient. The upper end of the first support rod 121 is fixedly connected to the lower end of the bearing platform 110, thereby allowing the height of the lifting platform to be flexibly adjusted according to actual operating needs, meeting the replacement work of the yaw caliper 1 at different installation positions and heights, and improving the practicality of the device.

[0048] Specifically, rollers can also be installed at the lower end of the second support rod 122 to facilitate the movement of the lifting worktable.

[0049] Specifically, the rollers are also equipped with a locking structure. When the lifting platform is moved to the appropriate position, the rollers are locked to restrict their movement, ensuring the stability of the lifting platform and facilitating the replacement of the yaw caliper 1.

[0050] Based on any of the above technical solutions, the lifting structure includes a fixed base 210, in which a worm 220, a turbine 230 and a lead screw 240 are provided. The worm 220 meshes with the turbine 230 for transmission. The turbine 230 is sleeved on the outside of the lead screw 240 and is threadedly connected to the lead screw 240. The upper end of the lead screw 240 is detachably connected to the lifting device.

[0051] The worm gear 220 drives the turbine 230 to rotate, and the rotation of the turbine 230 drives the lead screw 240 to rise or fall, thereby realizing the lifting of the lifting device. At the same time, the worm gear transmission has a self-locking function, which can prevent the lifting device from falling down on its own due to external force when it is raised or lowered to a suitable height, ensuring the positional stability of the yaw caliper 1 during the replacement process and improving the safety of operation.

[0052] Based on any of the above technical solutions, the lower end of the lifting worktable is provided with a guide cylinder 250, the guide cylinder 250 has a prism-shaped inner hole, and the lower end of the lead screw 240 is fixed with a prism-shaped guide block adapted to the shape of the prism-shaped inner hole, the prism-shaped guide block being slidably disposed in the prism-shaped inner hole.

[0053] By setting a guide cylinder 250 with a prism-shaped inner hole, a prism-shaped guide block adapted to the shape of the prism-shaped inner hole is fixed at the lower end of the lead screw 240. The prism-shaped guide block is slidably set in the prism-shaped inner hole, thereby constraining the movement trajectory of the lead screw 240, ensuring that the lead screw 240 moves in a straight line during the lifting process, avoiding deviation or shaking, making the lifting of the lifting device more stable and accurate, and further improving the accuracy and safety of the operation of replacing the yaw caliper 1.

[0054] In a specific example, the outer surface of the upper end of the lead screw 240 is provided with at least two protrusions along the axial direction. Correspondingly, the lower end of the connecting plate 320 is provided with a connecting hole, and at least two grooves are provided in the connecting hole. The grooves and protrusions are matched. By providing the grooves and protrusions, the connecting plate 320 and the lead screw 240 can be quickly and detachably connected.

[0055] Optionally, the upper end of the lead screw 240 is provided with a first through hole, and the lower end of the connecting plate 320 is provided with a connecting hole. The lower end of the connecting plate 320 is also provided with a second through hole and a third through hole. The axes of the second through hole and the third through hole are perpendicular to the axis of the connecting hole. By placing the upper end of the lead screw 240 into the connecting hole on the connecting plate 320, and then passing the locking bolt through the second through hole, the first through hole and the third through hole, and locking it with a nut, the connecting plate 320 and the lead screw 240 can be quickly and detachably connected.

[0056] Based on any of the above technical solutions, a drive handwheel 260 is fixedly provided at one end of the worm gear 220.

[0057] A drive handwheel 260 is provided at one end of the worm gear 220. By rotating the drive handwheel 260, the worm gear 220 can be driven to rotate, thereby driving the turbine 230 and the lead screw 240 to work, realizing the lifting and lowering of the lifting device. The operation is simple and does not require complex power equipment. It is easy for operators to control in the narrow working space of the wind turbine generator set, reducing equipment costs and operating difficulty, and improving the convenience of replacement operations.

[0058] Specifically, a handle is provided on the drive handwheel 260.

[0059] In a specific example, the yaw caliper 1 is typically fixed to the yaw brake disc 3 using four bolts 2. First, the lifting platform is adjusted to a suitable height. Two of the bolts 2 securing the yaw caliper 1 are removed. Then, the remaining two bolts 2 are used to secure the yaw caliper 1. By cranking the handle, the worm gear 220 rotates, which in turn rotates the turbine 230. This causes the lead screw 240 to lift the lifting plate 310. The inclined positioning surface of the yaw caliper 1 abuts against one surface of the inclined plate 312 on the lifting plate 310. Correspondingly, the two bolts 2 securing the yaw caliper 1 pass through two through holes 311, completing the positioning of the yaw caliper 1. Finally, the yaw caliper 1 is secured at the lower end of the lifting plate 310. Remove the remaining two bolts 2 to complete the disassembly of the yaw caliper 1. Crank the handle in the opposite direction to lower the lifting plate 310 and complete the subsequent handling of the yaw caliper 1. Next, place the yaw caliper 1 to be installed on the lifting plate 310. Use the positioning surface and positioning hole on the lifting plate 310 to quickly position the yaw caliper 1, that is, to make the inclined positioning surface of the yaw caliper 1 abut against one side of the inclined plate 312. Pass the four bolts 2 through the positioning hole from the lower end of the lifting plate 310, that is, through the through hole 311. During the installation process, by cranking the handle, the lifting plate 310 is gradually raised. After reaching the final installation position of the yaw caliper 1, tighten the bolts 2 with nuts to complete the replacement of the yaw caliper 1.

[0060] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of the present invention have been shown and described above, it is 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.

Claims

1. A device for replacing yaw calipers, characterized in that, It includes a lifting work platform, a lifting structure, and a lifting device. The lower end of the lifting structure is disposed on the lifting work platform, and the lifting device is detachably connected to the upper end of the lifting structure. The lifting device is provided with positioning holes and positioning surfaces.

2. The device for replacing yaw calipers according to claim 1, characterized in that, The lifting device includes a lifting plate (310) and a connecting plate (320). The upper ends of the lifting plate (310) and the connecting plate (320) are fixedly connected, and the lower end of the connecting plate (320) is detachably connected to the lifting structure.

3. The device for replacing yaw calipers according to claim 2, characterized in that, An inclined plate (312) is provided on the lifting plate (310), the inclined plate (312) has the positioning surface, and at least two through holes (311) are provided on the lifting plate (310), the through holes (311) being the positioning holes.

4. The device for replacing yaw calipers according to claim 1, characterized in that, The lifting work platform includes a support platform (110) and four lifting support rods (120), the upper ends of the four lifting support rods (120) being fixedly connected to the lower end of the support platform (110).

5. The device for replacing a yaw caliper according to claim 4, characterized in that, The four lifting support rods (120) are arranged in a rectangular array and are located at the four corners of the lower end of the support platform (110).

6. The device for replacing a yaw caliper according to claim 5, characterized in that, A connecting rod (130) is provided between every two adjacent lifting support rods (120).

7. The apparatus for replacing a yaw caliper according to any one of claims 4-6, characterized in that, The lifting support rod (120) includes a first support rod (121) and a second support rod (122). The first support rod (121) and the second support rod (122) are threaded together. The upper end of the first support rod (121) is fixedly connected to the lower end of the bearing platform (110).

8. The device for replacing yaw calipers according to claim 1, characterized in that, The lifting structure includes a fixed base (210), in which a worm (220), a turbine (230), and a lead screw (240) are provided. The worm (220) meshes with the turbine (230) for transmission. The turbine (230) is sleeved on the outside of the lead screw (240) and is threadedly connected to the lead screw (240). The upper end of the lead screw (240) is detachably connected to the lifting device.

9. The device for replacing a yaw caliper according to claim 8, characterized in that, The lower end of the lifting worktable is provided with a guide cylinder (250), the guide cylinder (250) has a prism-shaped inner hole, and the lower end of the lead screw (240) is fixed with a prism-shaped guide block that matches the shape of the prism-shaped inner hole. The prism-shaped guide block is slidably disposed in the prism-shaped inner hole.

10. The apparatus for replacing a yaw caliper according to claim 9, characterized in that, A drive handwheel (260) is fixedly installed at one end of the worm gear (220).

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