Pipe mill core rod transmission trolley transmission mechanism

Abstract

The utility model relates to the field of metal processing machinery, and discloses a pipe mill core rod transmission trolley transmission mechanism which comprises a core rod transmission machine body, the outer walls of the left side and the right side of the core rod transmission machine body are fixedly connected with fixing frames respectively, and the inner walls of the left side and the right side of the core rod transmission machine body are fixedly connected with triangular supporting plates. The core rod driver comprises a core rod driver body, a transmission structure is arranged on the core rod driver body, an auxiliary structure is arranged on the transmission structure, the transmission structure comprises a rotating ring, the rotating ring is fixedly connected to the output end of the core rod driver body, an inner groove is formed in the inner wall of the side face of the rotating ring, the inner groove makes contact with a steel wire rope, and the steel wire rope makes contact with a carrier roller frame. According to the utility model, the wear-resistant layers made of high-analysis wear-resistant nylon materials are arranged at key parts in contact with the steel wire rope, such as the inner groove, the middle ring sleeve and the outer wall of the side surface of the carrier roller frame, so that the friction loss between the steel wire rope and each part is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of metal processing machinery, and in particular to a transmission mechanism for a mandrel transfer trolley in a tube rolling mill. Background Technology

[0002] The limited-motion trolley is used for the transmission of the mandrel in the PA pipe rolling mill. The trolley operates by using a wire rope drive. After a major overhaul in 2023, the lifespan of the Φ22 wire rope of the limited-motion trolley became uncontrollable, ranging from 1 to 3 months. The main problem was the breakage caused by broken strands in the wire rope, which resulted in the need to replace all the forward and backward wire ropes, with a replacement time of 5 to 6 hours.

[0003] The mandrel transport trolley transmission mechanism of the tube rolling mill is a key component ensuring the efficient operation of the seamless steel pipe production process. It uses various transmission methods, such as gear and rack, chain, wire rope traction, or hydraulic transmission, to quickly and accurately transport the mandrel to the rolling station or storage area. Gear and rack transmission achieves stable linear motion through the meshing of high-rigidity gears and fixed racks, suitable for heavy-duty, high-precision scenarios. Chain transmission, with its high-strength roller chain and sprocket combination, can handle frequent short-distance transport in harsh environments. Wire rope traction utilizes the winding and unwinding of a drum to flexibly control the trolley's displacement, meeting high-speed start-stop requirements. Hydraulic transmission uses high-pressure oil to drive hydraulic cylinders, providing high thrust and stable low-speed operation for heavy-duty mandrel transport. These transmission mechanisms all possess advantages such as high efficiency and stability, precise positioning, strong environmental adaptability, and convenient maintenance, effectively reducing swaying and jamming during transport, ensuring accurate mandrel positioning, and supporting continuous operation of the tube rolling production line.

[0004] The transmission mechanism has the following defects: the driven pulley of the wire rope is a cast steel part, and the friction between the wire rope and the pulley will affect the service life of the wire rope; in addition, the sliding friction between the wire rope and the idler roller will cause wear on the surface of the idler roller. To solve these problems, a transmission mechanism for the mandrel transfer carriage of a tube rolling mill is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a transmission mechanism for the mandrel transfer carriage of a pipe rolling mill, which aims to improve the problem in the prior art where the passive pulley of the wire rope is a cast steel part, and the friction between the wire rope and the pulley affects the service life of the wire rope.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a mandrel transmission trolley transmission mechanism for a tube rolling mill, comprising a mandrel transmission machine body, wherein fixed frames are fixedly connected to the left and right outer walls of the mandrel transmission machine body, and triangular support plates are fixedly connected to the left and right inner walls of the mandrel transmission machine body, wherein a transmission structure is provided on the mandrel transmission machine body, and an auxiliary structure is provided on the transmission structure, wherein the transmission structure includes a rotating ring, the rotating ring being fixedly connected to the output end of the mandrel transmission machine body, an inner groove being formed on the inner wall of the side of the rotating ring, the inner groove contacting a steel wire rope, the steel wire rope contacting a roller frame, a wear-resistant layer being fixedly connected to the outer wall of the side of the roller frame, and a middle ring sleeve being fixedly connected to the output end of the mandrel transmission machine body.

[0007] As a further description of the above technical solution: the auxiliary structure includes an installation port, which is opened on the top inner wall of the fixed frame. An oil tank frame is snapped into the bottom inner wall of the installation port. An oil storage groove is opened on the front inner wall of the oil tank frame. A sliding plate is slidably connected to the front inner wall of the oil tank frame. A movable plate is fixedly connected to the bottom outer wall of the sliding plate. A fixed plate is fixedly connected to the side outer wall of the rotating ring. A U-shaped frame is fixedly connected to the top outer wall of the movable plate. A conical piston sealing cylinder is fixedly connected to the bottom outer wall of the U-shaped frame.

[0008] As a further description of the above technical solution: mounting plates are fixedly connected to the outer walls of the left and right sides of the roller frame, and the thickness of the wear-resistant layer is ten millimeters.

[0009] As a further description of the above technical solution: there are several wear-resistant layers, and the several wear-resistant layers are respectively fixedly connected to the outer side wall of the inner groove, the middle ring sleeve, and the idler roller frame.

[0010] As a further description of the above technical solution: the wire rope is in contact with the inside of the middle ring sleeve and the inner groove respectively.

[0011] As a further description of the above technical solution: the fixed plate contacts the outer side wall of the movable plate, and the movable plate and the outer side wall of the fixed plate are fixedly connected with wear-resistant pads.

[0012] As a further description of the above technical solution: the conical piston sealing cylinder penetrates the bottom outer wall of the U-shaped frame, and the bottom outer wall of the conical piston sealing cylinder is conical in shape.

[0013] As a further description of the above technical solution: the top outer wall of the fuel tank frame is fitted with a fuel tank cover, the side outer wall of the fuel tank cover is provided with a directional mark, and the fuel tank cover is connected to the fuel storage tank.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, by setting a wear-resistant layer of high-analyte wear-resistant nylon material in key parts that come into contact with the wire rope, such as the inner groove, the middle ring sleeve, and the outer wall of the side of the idler frame, the friction loss between the wire rope and various components is effectively reduced. The position of the idler frame is adjusted to the outside of the running bed and the height of the base plate is reduced to avoid cooling water corrosion and excessive contact, further reducing friction. At the same time, the inner part of the middle ring sleeve uses galvanized steel wire with hemp core and oil, which enhances its own lubrication and rust prevention capabilities. The combined effect of these multiple measures greatly reduces the wear of various components, effectively extends the service life of the entire transmission mechanism, and reduces equipment maintenance costs.

[0016] 2. In this utility model, the automatic dripping lubricating oil in the oil storage tank is achieved through the linkage of structures such as the movable plate, sliding plate, U-shaped frame and conical piston sealing cylinder. This automatic lubrication mechanism can keep the wire rope in a good lubricated state at all times, reduce friction caused by dryness, and ensure smooth and stable transmission process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall front view of the transmission mechanism of the mandrel transfer trolley for a tube rolling mill proposed in this utility model;

[0018] Figure 2 This is a side view of the overall transmission mechanism of the mandrel transfer trolley for a tube rolling mill proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the transmission structure of a mandrel transfer trolley transmission mechanism for a tube rolling mill proposed in this utility model.

[0020] Figure 4 This is a schematic diagram of the auxiliary structure of the transmission mechanism for the mandrel transfer trolley of a tube rolling mill proposed in this utility model.

[0021] Legend:

[0022] 1. Fixed frame; 2. Core rod drive body; 3. Triangular support plate; 4. Transmission structure; 41. Rotating ring; 42. Inner groove; 43. Steel wire rope; 44. Idler roller frame; 45. Wear-resistant layer; 46. Mounting plate; 47. Middle ring sleeve; 5. Auxiliary structure; 51. Mounting port; 52. Oil tank frame; 53. Oil tank cover; 54. Oil storage tank; 55. Sliding plate; 56. Movable plate; 57. Fixed plate; 58. U-shaped frame; 59. Conical piston sealing cylinder. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figures 1-3 This utility model provides an embodiment of a mandrel transmission trolley for a tube rolling mill, comprising a mandrel transmission machine body 2. Fixing frames 1 are fixedly connected to the left and right outer walls of the mandrel transmission machine body 2. The mandrel transmission machine body 2 serves as the power core of the entire transmission mechanism, stably outputting power and providing a reliable drive source for the trolley's operation, ensuring the efficiency and stability of the transmission process. The above structure is existing technology and therefore will not be described in detail further. Triangular support plates 3 are fixedly connected to the left and right inner walls of the mandrel transmission machine body 2. The triangular support plates 3 utilize the stability characteristics of a triangle to further reinforce the internal structure of the mandrel transmission machine body 2, effectively dispersing the stress generated during operation and improving the durability and reliability of the equipment. The main body 2 of the mandrel drive machine is provided with a transmission structure 4, and an auxiliary structure 5 is provided on the transmission structure 4. The transmission structure 4 includes a rotating ring 41, which is fixedly connected to the output end of the main body 2 of the mandrel drive machine. The inner wall of the side of the rotating ring 41 is provided with an inner groove 42, which contacts a wire rope 43. The wire rope 43 contacts a roller frame 44. The outer wall of the side of the roller frame 44 is fixedly connected with a wear-resistant layer 45. By changing the material of the wear-resistant layer 45 to high-analytical wear-resistant nylon, the damage to the wire rope 43 is relatively small, which can effectively reduce the friction and wear between the wire rope 43 and the roller frame 44, extend the service life of both, and reduce the equipment maintenance cost. The output end of the main body 2 of the mandrel drive machine is fixedly connected with a middle ring sleeve 47.

[0025] Reference Figures 2-4 Mounting plates 46 are fixedly connected to the outer walls of the left and right sides of the idler frame 44. The mounting plates 46 facilitate the installation and fixation of the idler frame 44 with other components, ensuring that the idler frame 44 can be accurately installed in the predetermined position, and ensuring the installation accuracy and operational stability of the entire transmission mechanism. The wear-resistant layer 45 has a thickness of 10 mm and there are several wear-resistant layers 45. The several wear-resistant layers 45 are respectively fixedly connected to the inner groove 42, the middle ring sleeve 47, and the outer side walls of the idler frame 44. The wire rope 43 is in contact with the inside of the middle ring sleeve 47 and the inner groove 42 respectively.

[0026] Reference Figures 3-4The auxiliary structure 5 includes an installation port 51, which is located on the top inner wall of the fixed frame 1. An oil tank frame 52 is snapped into the bottom inner wall of the installation port 51. An oil storage groove 54 is provided on the front inner wall of the oil tank frame 52. The oil storage groove 54 stores lubricating oil, providing the necessary lubrication for the key components of the transmission structure 4, ensuring sufficient lubrication during operation. A sliding plate 55 is slidably connected to the front inner wall of the oil tank frame 52. A movable plate 56 is fixedly connected to the bottom outer wall of the sliding plate 55. A fixed plate 57 is fixedly connected to the side outer wall of the rotating ring 41. A U-shaped frame 58 is fixedly connected to the top outer wall of the movable plate 56. A conical piston sealing cylinder 59 is fixedly connected to the bottom outer wall of the U-shaped frame 58. The conical piston sealing cylinder 59 penetrates the bottom outer wall of the U-shaped frame 58, and its bottom outer wall is conical, allowing it to move by changing its shape. The system precisely controls the outflow of lubricating oil from the oil reservoir 54 to achieve automatic lubrication. The fixed plate 57 contacts the outer side wall of the movable plate 56. Wear-resistant pads are fixedly connected to the outer side walls of the movable plate 56 and the fixed plate 57. The wear-resistant pads can reduce friction and wear between the fixed plate 57 and the movable plate 56, ensuring normal operation during frequent contact and action, and extending service life. The conical piston sealing cylinder 59 penetrates the bottom outer wall of the U-shaped frame 58. The bottom outer wall of the conical piston sealing cylinder 59 is conical. The top outer wall of the oil tank frame 52 is snapped with an oil tank cover 53. The outer side wall of the oil tank cover 53 has directional markings. The directional markings facilitate the operator to accurately identify the installation direction and position of the oil tank cover 53, ensuring that the oil tank cover 53 is installed correctly and ensuring the sealing of the oil reservoir 54. The oil tank cover 53 is connected to the oil reservoir 54.

[0027] Working principle: The positions of the three sets of idler frames 44 are adjusted to the outside of the existing running bed to avoid the influence of cooling water on the guide roller bearings on the idler frames 44, and the base plate of the idler frames 44 is lowered as a whole to avoid excessive contact between the wire rope 43 and the idler frames 44, thus reducing friction. At the same time, the main body 2 of the mandrel drive machine is turned on, causing the rotating ring 41 to rotate. The rotation of the rotating ring 41 drives the wire rope 43 to move, which in turn drives the trolley to move on the wire rope. When the rotating ring 41 rotates once, it will drive the fixed plate 57 to rotate, so that the fixed plate 57 contacts the movable plate 56, thus... The upward movement of the movable plate 56 causes the sliding plate 55 to move, which in turn causes the U-shaped frame 58 to move. The movement of the U-shaped frame 58 causes the conical piston sealing cylinder 59 to move upward. The upward movement of the conical piston sealing cylinder 59 creates a certain gap between the conical surface and the bottom opening of the oil storage tank 54, allowing the lubricating oil inside the oil storage tank 54 to flow out and drip into the inner groove 42 of the rotating ring 41 for self-lubrication. This prevents the wire rope 43 from drying out, reduces friction with other components, and lowers wear. At the same time, the wire rope 43 inside the middle ring sleeve 47 is made of galvanized steel wire with an oil-filled hemp core, making the wire rope 43 more lubricated.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mandrel transmission trolley transmission mechanism for a tube rolling mill, comprising a mandrel transmission machine body (2), characterized in that: The outer walls of the left and right sides of the mandrel drive machine body (2) are respectively fixedly connected to a fixed frame (1), and the inner walls of the left and right sides of the mandrel drive machine body (2) are fixedly connected to a triangular support plate (3). The mandrel drive machine body (2) is provided with a transmission structure (4), and the transmission structure (4) is provided with an auxiliary structure (5). The transmission structure (4) includes a rotating ring (41), which is fixedly connected to the output end of the mandrel transmission machine body (2). The inner wall of the rotating ring (41) has an inner groove (42), which contacts a steel wire rope (43). The steel wire rope (43) contacts a roller frame (44). The outer wall of the roller frame (44) has a wear-resistant layer (45) fixedly connected to it. The output end of the mandrel transmission machine body (2) is fixedly connected to a middle ring sleeve (47).

2. The transmission mechanism for the mandrel transfer carriage of a tube rolling mill according to claim 1, characterized in that: The auxiliary structure (5) includes an installation port (51), which is located on the top inner wall of the fixed frame (1). An oil tank frame (52) is attached to the bottom inner wall of the installation port (51). An oil storage groove (54) is provided on the front inner wall of the oil tank frame (52). A sliding plate (55) is slidably connected to the front inner wall of the oil tank frame (52). A movable plate (56) is fixedly connected to the bottom outer wall of the sliding plate (55). A fixed plate (57) is fixedly connected to the side outer wall of the rotating ring (41). A U-shaped frame (58) is fixedly connected to the top outer wall of the movable plate (56). A conical piston sealing cylinder (59) is fixedly connected to the bottom outer wall of the U-shaped frame (58).

3. The transmission mechanism for the mandrel transfer carriage of a tube rolling mill according to claim 1, characterized in that: Mounting plates (46) are fixedly connected to the outer walls of the left and right sides of the roller frame (44), and the wear-resistant layer (45) has a thickness of ten millimeters.

4. The transmission mechanism for the mandrel transfer carriage of a tube rolling mill according to claim 1, characterized in that: There are several wear-resistant layers (45), and several wear-resistant layers (45) are respectively fixedly connected to the outer side wall of the inner groove (42), the middle ring sleeve (47), and the idler roller frame (44).

5. The transmission mechanism for the mandrel transfer carriage of a tube rolling mill according to claim 1, characterized in that: The wire rope (43) is in contact with the inside of the middle ring sleeve (47) and the inner groove (42).

6. The transmission mechanism for the mandrel transfer carriage of a tube rolling mill according to claim 2, characterized in that: The fixed plate (57) contacts the outer side wall of the movable plate (56), and the movable plate (56) and the outer side wall of the fixed plate (57) are fixedly connected with wear-resistant pads.

7. The transmission mechanism for the mandrel transfer carriage of a tube rolling mill according to claim 2, characterized in that: The conical piston sealing cylinder (59) penetrates the bottom outer wall of the U-shaped frame (58), and the bottom outer wall of the conical piston sealing cylinder (59) is conical.

8. The transmission mechanism for the mandrel transfer carriage of a tube rolling mill according to claim 2, characterized in that: The top outer wall of the fuel tank frame (52) is fitted with a fuel tank cover (53), and the outer side wall of the fuel tank cover (53) is provided with a directional mark. The fuel tank cover (53) is connected to the fuel storage tank (54).

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