Large roller shaft penetrating equipment

Abstract

The utility model discloses shaft penetrating equipment for a large roller. The shaft penetrating equipment comprises a ground rail, the fixed assembling assembly is arranged above one side of the ground rail, a first ejector pin is arranged on the other side, facing the ground rail, of the fixed assembling assembly, and a fixed chuck is arranged on the periphery of the ejector pin. The bracket assembly moves along the ground rail through a sliding mechanism, the bracket assembly is arranged on one side of the fixed assembling assembly, the bracket assembly is provided with a first supporting seat and a worm wheel elevator, and the worm wheel elevator adjusts the height of the first supporting seat; the ejector pin moving assembly is arranged above the other side of the ground rail and moves along the ground rail through a sliding mechanism, and a second ejector pin is arranged on one side of the ejector pin moving assembly; the walking assembling assembly is arranged between the fixed assembling assembly and the ejector pin moving assembly, and the walking assembling assembly slides along the ground rail through a sliding mechanism. According to the large roller shaft penetrating device, the automatic assembling effect is achieved, the assembling efficiency is ensured, and meanwhile the dangerous situation in the assembling process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of large-scale roller shaft threading, in particular to large-scale roller shaft threading equipment. Background Art

[0002] When assembling some existing large rollers, it is necessary to insert the center shaft into the cylinder skin, and install expansion sleeves at both ends of the cylinder skin to fix the center shaft and the cylinder skin, so as to complete the entire assembly process. Since the weight of large cylinder skins and center shafts can reach several tons or more than ten tons, the existing assembly method mainly uses a large bridge crane-trolley to assemble in conjunction with manual alignment. The cylinder skin is placed on the ground, the center shaft is lifted by the bridge crane, and the axis of the center shaft and the cylinder skin are manually calibrated to the same straight line, and then the center shaft is inserted into the cylinder skin by slowly moving the bridge crane. In this process, workers are required to constantly adjust the position of the center shaft to ensure smooth insertion inside, and after the center shaft is inserted, the expansion sleeves at both ends of the cylinder skin also need to be knocked in and fixed manually. Therefore, the existing assembly method is inefficient, and workers are required to assist in the assembly process, which is prone to dangerous situations. Utility Model Content

[0003] The utility model aims to provide a large-scale roller shaft threading device, which realizes the effect of automatic assembly by placing the roller skin, expansion sleeve and central shaft on the device, ensures the assembly efficiency and reduces the occurrence of dangerous situations during the assembly process.

[0004] The technical solution adopted by a large-scale roller shaft threading equipment disclosed in the utility model is:

[0005] A large roller shaft threading device comprises a ground rail, wherein the ground rail is arranged in a straight line;

[0006] A fixed assembly component, the fixed assembly component is arranged above one side of the ground rail, and the fixed assembly component is provided with a first ejector pin toward the other side of the ground rail, the first ejector pin is used to align the axis of the central axis, and a fixed chuck is provided on the periphery of the ejector pin, and the fixed chuck is used to fix the central axis;

[0007] A bracket assembly, the bracket assembly is arranged above the ground rail, the bracket assembly moves along the ground rail through a sliding mechanism, the bracket assembly is arranged on one side of the fixed assembly assembly, the bracket assembly is provided with a first support seat and a worm gear hoist, the first support seat is used to place the central axis, and the worm gear hoist adjusts the height of the first support seat;

[0008] An ejector moving assembly, the ejector moving assembly is arranged above the other side of the ground rail, and the ejector moving assembly moves along the ground rail through a sliding mechanism, and a second ejector for supporting the central axis is arranged on the side of the ejector moving assembly facing the fixed assembly assembly, and the first ejector and the second ejector are located on the same horizontal line;

[0009] A walking assembly component is arranged between the fixed assembly component and the ejector moving component, and the walking assembly component slides along the ground rail through a sliding mechanism. The walking assembly component is used to place the cylinder skin supporting the assembly.

[0010] As a preferred solution, a rack is provided in the middle of the ground rail, and the rack is arranged in an extending manner along the ground rail. The sliding mechanism includes a sliding gear and a rotating motor. The sliding gear and the rack are meshed with each other, and the rotating motor drives the sliding gear to rotate. Several of the sliding mechanisms are respectively fixedly connected to the bracket assembly, the ejector moving assembly and the walking assembly assembly.

[0011] As a preferred solution, the fixed assembly component includes a fixed frame, the first ejector pin is transversely arranged on the fixed frame, and the first ejector pin extends toward one side of the bracket assembly, and the fixed chuck and the first ejector pin are located on the same axis.

[0012] As a preferred solution, there are several bracket assemblies, each of which includes a base, the sliding mechanism is fixed to one side of the base, the worm gear elevator is arranged above the base, the first support seat is arranged above the worm gear elevator, and the first support seat is in a V-shaped structure.

[0013] As a preferred solution, the ejector moving assembly includes a moving plate, a support plate is vertically provided on the moving plate, a reinforced rib plate is provided on the side of the support plate, a sleeve is provided on the side of the support plate close to the walking assembly assembly, and a pushing cylinder is provided on the other side of the support plate. The second ejector is slidably arranged in the sleeve, and both ends of the second ejector extend out of the sleeve. The pushing cylinder is fixedly connected to one end of the second ejector, and the other end of the second ejector is a conical structure.

[0014] As a preferred solution, a plurality of positioning holes are provided on both sides of the ground rail, and a plurality of push rod motors are provided corresponding to the positioning holes of the movable plate. The output shaft of the push rod motor is provided with a positioning pin. When the positioning pin is aligned with the positioning hole, the push rod motor pushes the positioning pin into the positioning hole.

[0015] As a preferred embodiment, the walking assembly component includes a base plate, a lifting plate is provided above the base plate, a lifting mechanism is provided between the lifting plate and the base plate, the lifting mechanism drives the lifting plate to move up and down, a second support seat is provided above the lifting plate, and the second support seat is in a V-shaped structure.

[0016] As a preferred solution, the lifting mechanism includes four groups of worm gear lifting seats and lifting motors. The worm gear lifting seats are respectively arranged at the four corners of the base plate, and the worm gear lifting seats are connected by a worm gear. The lifting motor is fixedly connected to the worm gear. The lifting motor drives the worm gear to rotate, thereby realizing synchronous movement of the four groups of worm gear lifting seats.

[0017] As a preferred solution, four guide columns are provided below the lifting plate, and the guide columns are slidably connected to the bottom plate.

[0018] As a preferred solution, laser ranging sensors are provided in the middle of the first support seat and the second support seat.

[0019] The beneficial effects of a large-scale roller shaft threading device disclosed by the utility model are as follows: first, the center shaft is placed above the first supporting seat of the bracket assembly, and the axis center of the center shaft and the axis center of the first ejector are adjusted to the same horizontal line by a worm gear elevator, and the expansion sleeve is pre-fixed to the periphery of the first ejector by a fixed chuck, and then one end of the center shaft is moved to the first ejector position by a sliding mechanism, and the first ejector is pressed against one end of the center shaft, and at the same time, the fixed chuck releases the expansion sleeve to clamp and fix the center shaft, and the cylinder skin is placed on the walking assembly assembly, and the walking assembly assembly is driven toward one side of the center shaft by the sliding mechanism, and the cylinder skin is inserted from one end of the center shaft. When it is moved to the set position, the bracket assembly under the center shaft needs to be withdrawn, and the ejector moving assembly on the other side of the walking assembly assembly moves toward the center shaft. The other end is moved so that the second ejector on the ejector moving assembly penetrates into the cylinder skin and contacts with the other end of the central axis. The central axis is clamped and fixed by the first ejector and the second ejector, and the height of the first supporting seat is reduced by a worm gear elevator. The bracket assembly is moved to one side by a sliding mechanism to achieve the purpose of withdrawal, thereby ensuring that the central axis can remain stationary and the cylinder skin can continue to move. When the cylinder skin moves to a fixed chuck position, the expansion sleeve on the fixed chuck can be pushed into one side of the cylinder skin to achieve the insertion of the expansion sleeve, which is convenient for subsequent locking and fixing. The expansion sleeve on the other side of the cylinder skin can be supported by the bracket assembly so that the expansion sleeve is located between the cylinder skin and the traveling assembly assembly, and moves synchronously with the traveling assembly assembly. After the center shaft is penetrated, the expansion sleeves on both sides are assembled to both sides of the cylinder skin.

[0020] Through the above structure, the automatic threading of the barrel skin is realized, and at the same time, the positioning during the threading process can be made more precise. The center shaft and the barrel skin are in a stable state, avoiding the shaking caused by traditional bridge cranes, causing errors or bumps, and no manual assistance is required, thus avoiding the occurrence of accidents and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a structural schematic diagram of a large-scale roller shaft threading device.

[0022] Figure 2 The utility model is a schematic diagram of the initial working state structure of a large-scale roller shaft threading device.

[0023] Figure 3 The utility model is a schematic diagram of the working process structure of a large-scale roller shaft threading equipment.

[0024] Figure 4 The utility model is a schematic diagram of the fixed assembly component structure of a large roller shaft threading device.

[0025] Figure 5 The utility model is a schematic diagram of the structure of a bracket assembly of a large roller shaft threading device.

[0026] Figure 6 The utility model is a schematic diagram of the structure of a thimble moving component of a large roller shaft threading device.

[0027] Figure 7 The utility model is a schematic diagram of the structure of a walking assembly component of a large roller shaft threading device. DETAILED DESCRIPTION

[0028] The present invention is further described and illustrated below in conjunction with specific embodiments and accompanying drawings:

[0029] Please refer to Figure 1 A large roller shaft threading device includes a ground rail 10, and the ground rail 10 is arranged in a straight line.

[0030] The fixed assembly component 20 is arranged above one side of the ground rail 10, and the fixed assembly component 20 is provided with a first ejector pin 21 toward the other side of the ground rail 10, the first ejector pin 21 is used to align the axis of the central axis 70, and a fixed chuck 22 is provided on the periphery of the ejector pin, and the fixed chuck 22 is used for expanding the sleeve 72.

[0031] The bracket assembly 30 is arranged above the ground rail 10. The bracket assembly 30 moves along the ground rail 10 through the sliding mechanism 40. The bracket assembly 30 is arranged on one side of the fixed assembly assembly 20. The bracket assembly 30 is provided with a first support seat 31 and a worm gear hoist 32. The first support seat 31 is used to place the central axis 70, and the worm gear hoist 32 adjusts the height of the first support seat 31.

[0032] The ejector moving assembly 50 is disposed above the other side of the ground rail 10, and the ejector moving assembly 50 moves along the ground rail 10 through the sliding mechanism 40. The ejector moving assembly 50 is provided with a second ejector 51 for supporting the central axis 70 on the side facing the fixed assembly assembly 20, and the first ejector 21 and the second ejector 51 are located on the same horizontal line;

[0033] The walking assembly component 60 is arranged between the fixed assembly component 20 and the ejector moving component 50, and the walking assembly component 60 slides along the ground rail 10 through the sliding mechanism 40. The walking assembly component 60 is used to place the tube skin 72 of the supporting assembly.

[0034] Please refer to Figure 2 , first place the center shaft 70 above the first support seat 31 of the bracket assembly 30, and adjust the axis of the center shaft 70 and the axis of the first ejector 21 to the same horizontal line through the worm gear elevator 32, and pre-fix the expansion sleeve 72 to the periphery of the first ejector 21 through the fixed chuck 22, and then move one end of the center shaft 70 to the position of the first ejector 21 through the sliding mechanism 40, and press one end of the center shaft 70 through the first ejector 21, and at the same time, the fixed chuck 22 releases the expansion sleeve 72 to clamp and fix the center shaft 70, and the sleeve 72 is placed on the walking assembly assembly 60, and the walking assembly assembly 60 is driven toward one side of the center shaft 70 by the sliding mechanism 40, and the sleeve 72 is inserted from one end of the center shaft 70.

[0035] Please refer to Figure 3 , and when it moves to the set position, the bracket assembly 30 under the central shaft 70 needs to be withdrawn, then the ejector moving assembly 50 on the other side of the walking assembly assembly 60 moves toward the other end of the central shaft 70, so that the second ejector 51 on the ejector moving assembly 50 penetrates the tube skin 72 and contacts the other end of the central shaft 70, and the central shaft 70 is clamped and fixed by the first ejector 21 and the second ejector 51, and the height of the first support seat 31 is reduced by the worm gear hoist 32, and the bracket assembly 30 is moved to one side by the sliding mechanism 40, so as to achieve the purpose of withdrawal. , ensuring that the central shaft 70 can remain stationary and the tube skin 72 can continue to move. When the tube skin 72 moves the fixed chuck 22 position, the expansion sleeve 72 on the fixed chuck 22 can be pushed into one side of the tube skin 72 to achieve the insertion of the expansion sleeve 72, which is convenient for subsequent locking and fixation. The expansion sleeve 72 on the other side of the tube skin 72 can be supported by the bracket assembly 30, so that the expansion sleeve 72 is located between the tube skin 72 and the traveling assembly assembly 60, and moves synchronously with the traveling assembly assembly 60. After the central shaft 70 is threaded, the expansion sleeves 72 on both sides are assembled to the two sides of the tube skin 72.

[0036] Please refer to Figure 5 In the above scheme, a rack 11 is provided in the middle of the ground rail 10, and the rack 11 is arranged in an extending manner along the ground rail 10. The sliding mechanism 40 includes a sliding gear 41 and a rotating motor 42. The sliding gear 41 is meshed with the rack 11, and the rotating motor 42 drives the sliding gear 41 to rotate. Several sliding mechanisms 40 are respectively fixedly connected to the bracket assembly 30, the ejector moving assembly 50 and the walking assembly assembly 60.

[0037] The sliding gear 41 is driven to rotate by rotating the motor 42 , so that the sliding gear 41 rotates along the rack 11 , thereby achieving the purpose of moving the bracket assembly 30 , the ejector moving assembly 50 and the travel assembly assembly 60 along the rack 11 .

[0038] Please refer to Figure 4 The fixed assembly component 20 includes a fixing frame 23, a first ejector pin 21 is transversely arranged on the fixing frame 23, and the first ejector pin 21 extends toward one side of the bracket assembly 30, and the fixing chuck 22 and the first ejector pin 21 are located on the same axis, so that before the overall assembly begins, the expansion sleeve 72 is pre-opened and fixed by the fixing chuck 22, and when the center shaft 70 contacts the first ejector pin 21, the center shaft 70 passes through the expansion sleeve 72, ensuring that the installation of the shaft threading and the expansion sleeve 72 can be completed in one time, and in this embodiment, the shape of the fixing frame 23 is 7-shaped, so that the bracket assembly 30 can be stored at the lower end of the fixing frame 23 after being withdrawn, avoiding interference with the insertion of the tube skin 72.

[0039] Please refer to Figure 3 , and in this embodiment, the number of bracket assemblies 30 is 2. When lifting the central shaft 70, the brackets can be better set at both ends of the central shaft 70 to avoid the central shaft 70 from being overweight and causing tilting. The bracket assembly 30 includes a base 33, a sliding mechanism 40 is fixed to one side of the base 33, a worm gear hoist 32 is arranged above the base 33, a first support seat 31 is arranged above the worm gear hoist 32, and the first support seat 31 is a V-shaped structure, which can better support the central shaft 70 in the middle of the first support seat 31, so that the central shaft 70 will not shake left and right.

[0040] Please refer to Figure 6 The ejector moving assembly 50 includes a moving plate 52, a supporting plate 53 is vertically provided on the moving plate 52, a reinforcing rib plate 54 is provided on the side of the supporting plate 53, a sleeve 55 is provided on the side of the supporting plate 53 close to the walking assembly assembly 60, and a pushing cylinder 56 is provided on the other side of the supporting plate 53. The second ejector 51 is slidably arranged in the sleeve 55, and both ends of the second ejector 51 extend out of the sleeve 55. The pushing cylinder 56 is fixedly connected to one end of the second ejector 51, and the other end of the second ejector 51 is in a conical structure.

[0041] Because the sleeve 72 is not completely sleeved on the surface of the central shaft 70 when the ejector moving assembly 50 moves toward the sleeve 72, it is necessary to ensure that the second ejector 51 can extend a sufficiently long distance so that the second ejector 51 can contact one end of the central shaft 70. Therefore, a sleeve 55 is provided on one side of the support plate 53 so that after the second ejector 51 is pushed out, the sleeve 55 can be used to further support the second ejector 51, so that the force of the second ejector 51 is distributed to the sleeve 55 and the tail, thereby avoiding the tail from being subjected to excessive force and causing it to fall, and the conical structure at the other end of the second ejector 51 can better align with the axis of the central shaft 70.

[0042] In addition, a plurality of positioning holes 12 are provided on both sides of the ground rail 10, and a plurality of push rod motors 57 are provided corresponding to the positioning holes 12 on the movable plate 52, and a positioning pin is provided on the output shaft of the push rod motor 57. When the positioning pin is aligned with the positioning hole 12, the push rod motor 57 pushes the positioning pin to be inserted into the positioning hole 12. In order to prevent the movable plate 52 from accidentally sliding after the second ejector 51 abuts against the central shaft 70, causing the central shaft 70 to fall, therefore, after the movable plate 52 moves to a specified distance, the positioning pin is inserted into the corresponding positioning hole 12 by the push rod motor 57, so that the movable plate 52 is in a locked state and cannot be moved, and then the second ejector 51 is pushed out by the cylinder 56.

[0043] Please refer to Figure 7 The walking assembly component 60 includes a base plate 61, a lifting plate 62 is provided above the base plate 61, a lifting mechanism 63 is provided between the lifting plate 62 and the base plate 61, the lifting mechanism 63 drives the lifting plate 62 to move up and down, and a second support seat 64 is provided above the lifting plate 62, and the second support seat 64 is a V-shaped structure.

[0044] The lifting mechanism 63 includes four groups of worm gear lifting seats 631 and a lifting motor 632. The worm gear lifting seats 631 are respectively arranged at the four corners of the base plate 61, and the worm gear lifting seats 631 are connected by a worm 633. The lifting motor 632 is fixedly connected to the worm 633. The lifting motor 632 drives the worm 633 to rotate, thereby realizing the synchronous movement of the four groups of worm gear lifting seats 631.

[0045] When the tube skin 72 is placed on the second support seat 64, since the second support seat 64 is a V-shaped structure, the tube skin 72 automatically rolls to the center of the second support seat 64, and the four sets of worm gear lifting seats 631 are driven to rise synchronously by the lifting motor 632, so that the tube skin 72 is more stable during the movement, and at the same time, it also avoids the situation where one side of the tube skin 72 is higher than the other side, so that the axis center of the tube skin 72 and the axis center of the central axis 70 are on the same horizontal line, so that the subsequent shaft threading work can be carried out.

[0046] Four guide posts 65 are provided below the lifting plate 62 . The guide posts 65 are slidably connected to the bottom plate 61 . The guide posts 65 are used to guide the lifting plate 62 to rise or fall.

[0047] A laser distance measuring sensor is provided in the middle of the first support seat 31 and the second support seat 64. The laser distance measuring sensor can detect the distance from the middle of the first support seat 31 to the surface of the central axis 70 and the distance from the second support seat 64 to the surface of the tube skin 72, so as to calculate the radius of the central axis 70 and the tube skin 72, and obtain the height that needs to be adjusted for the first support seat 31 and the second support seat 64 to ensure that the tube skin 72 and the central axis 70 are on the same horizontal line.

[0048] The specific working principle is as follows: first, the central shaft 70 is hoisted onto the first support seat 31 of the bracket assembly 30. The laser distance sensor on the first support seat 31 detects the distance between the central shaft 70 and the middle of the first support seat 31. The radius of the central shaft 70 is calculated, and the height of the first support seat 31 is adjusted to ensure that the central shaft 70 and the first ejector 21 are on the same horizontal line. Then, the expansion sleeve 72 on one side is manually inserted into the fixed chuck 22, and the bracket assembly 30 drives the central shaft 70 to move to the position of the first ejector 21 and fix it. The chuck 22 pushes out the expansion sleeve 72 and clamps the center shaft 70, and the sleeve 72 is placed on the second support seat 64 by hoisting. The distance between the sleeve 72 and the middle of the second support seat 64 is detected by the second laser ranging sensor, and the radius of the sleeve 72 is calculated to adjust the height of the second support seat 64 so that the first ejector 21, the center shaft 70 and the sleeve 72 are all located on the same axis, and the expansion sleeve 72 on the other side is placed on the bracket assembly 30 on one side of the ejector moving assembly 50, and the second ejector 51 passes through the expansion sleeve 72.

[0049] The walking assembly component 60 and the bracket component 30 move synchronously to perform the shaft threading work. When the sleeve 72 is threaded to the set position, the ejector moving component 50 moves toward the sleeve 72, so that the second ejector 51 is pressed against one end of the center shaft 70, and the positioning is locked. The bracket component 30 reduces the height and withdraws from under the center shaft 70. The walking assembly component 60 continues to move to perform the shaft threading work. After the sleeve 72 is threaded, the expansion sleeves 72 on both sides are manually pushed into the two sides of the sleeve 72 and manually locked, thereby completing the complete assembly process and lifting the product away.

[0050] The automatic threading of the cylinder skin 72 is realized, and at the same time the alignment during the threading process can be made more accurate. The center shaft 70 and the cylinder skin 72 are both in a stable state, avoiding the shaking caused by traditional bridge cranes, causing errors or bumps, and no manual assistance is required, thus avoiding the occurrence of accidents and improving safety.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A large-scale roller shaft threading equipment, characterized in that: It includes a ground rail, and the ground rail is arranged in a straight line; A fixed assembly component, the fixed assembly component is arranged above one side of the ground rail, and the fixed assembly component is provided with a first ejector pin toward the other side of the ground rail, the first ejector pin is used to align the axis of the central axis, and a fixed chuck is provided on the periphery of the ejector pin, and the fixed chuck is used to fix the central axis; A bracket assembly, the bracket assembly is arranged above the ground rail, the bracket assembly moves along the ground rail through a sliding mechanism, the bracket assembly is arranged on one side of the fixed assembly assembly, the bracket assembly is provided with a first support seat and a worm gear hoist, the first support seat is used to place the central axis, and the worm gear hoist adjusts the height of the first support seat; An ejector moving assembly, the ejector moving assembly is arranged above the other side of the ground rail, and the ejector moving assembly moves along the ground rail through a sliding mechanism, and a second ejector for supporting the central axis is arranged on the side of the ejector moving assembly facing the fixed assembly assembly, and the first ejector and the second ejector are located on the same horizontal line; A walking assembly component is arranged between the fixed assembly component and the ejector moving component, and the walking assembly component slides along the ground rail through a sliding mechanism. The walking assembly component is used to place the cylinder skin supporting the assembly.

2. A large-scale roller shaft threading equipment as claimed in claim 1, characterized in that: A rack is provided in the middle of the ground rail, and the rack is arranged in an extending manner along the ground rail. The sliding mechanism includes a sliding gear and a rotating motor. The sliding gear and the rack are meshed with each other, and the rotating motor drives the sliding gear to rotate. Several of the sliding mechanisms are respectively fixedly connected to the bracket assembly, the ejector moving assembly and the walking assembly assembly.

3. A large-scale roller shaft threading equipment as claimed in claim 1, characterized in that: The fixed assembly component comprises a fixed frame, the first ejector pin is transversely arranged on the fixed frame, and the first ejector pin extends toward one side of the bracket component, and the fixed chuck and the first ejector pin are located on the same axis.

4. A large-scale roller shaft threading equipment as claimed in claim 1, characterized in that: There are several bracket assemblies, and the bracket assemblies include a base. The sliding mechanism is fixed to one side of the base. The worm gear elevator is arranged above the base. The first support seat is arranged above the worm gear elevator, and the first support seat is in a V-shaped structure.

5. A large-scale roller shaft threading equipment as claimed in claim 1, characterized in that: The ejector moving assembly includes a moving plate, a support plate is vertically arranged on the moving plate, a reinforced rib plate is arranged on the side of the support plate, a sleeve is arranged on the side of the support plate close to the walking assembly assembly, and a pushing cylinder is arranged on the other side of the support plate. The second ejector is slidably arranged in the sleeve, and both ends of the second ejector extend out of the sleeve. The pushing cylinder is fixedly connected to one end of the second ejector, and the other end of the second ejector is a conical structure.

6. A large-scale roller shaft threading equipment as claimed in claim 5, characterized in that: A plurality of positioning holes are arranged on both sides of the ground rail, and a plurality of push rod motors are arranged corresponding to the positioning holes on the movable plate. A positioning pin is arranged on the output shaft of the push rod motor. When the positioning pin is aligned with the positioning hole, the push rod motor pushes the positioning pin to be inserted into the positioning hole.

7. A large-scale roller shaft threading equipment as claimed in claim 1, characterized in that: The walking assembly component includes a base plate, a lifting plate is provided above the base plate, a lifting mechanism is provided between the lifting plate and the base plate, the lifting mechanism drives the lifting plate to move up and down, a second support seat is provided above the lifting plate, and the second support seat is in a V-shaped structure.

8. A large-scale roller shaft threading equipment as claimed in claim 7, characterized in that: The lifting mechanism includes four groups of worm gear lifting seats and a lifting motor. The worm gear lifting seats are respectively arranged at the four corners of the base plate, and the worm gear lifting seats are connected by a worm gear. The lifting motor is fixedly connected to the worm gear. The lifting motor drives the worm gear to rotate, thereby realizing synchronous movement of the four groups of worm gear lifting seats.

9. A large-scale roller shaft threading equipment as claimed in claim 7, characterized in that: Four guide columns are arranged below the lifting plate, and the guide columns are slidably connected with the bottom plate.

10. A large-scale roller shaft threading equipment as claimed in claim 7, characterized in that: Laser ranging sensors are disposed in the middle of the first support seat and the second support seat.

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