Leveling machine

Abstract

The utility model belongs to the technical field of steel plate machining equipment, and particularly discloses a leveling machine which comprises a machine frame, a plurality of lower leveling rollers and a plurality of upper leveling rollers are rotationally installed on the machine frame, the lower leveling rollers and the upper leveling rollers are arranged in a left-right staggered mode, and an extrusion assembly is arranged on one side of the machine frame. The extruding assembly comprises an upper pressing roller and a lower pressing roller which are rotationally mounted on the rack, the upper pressing roller and the lower pressing roller are arranged in an up-down opposite mode, and the lower pressing roller and the lower leveling rollers are arranged on the same horizontal plane; according to the leveling machine provided by the utility model, one end, which preferentially enters the space between the upper leveling roller and the lower leveling roller, of a steel plate can be preliminarily leveled, and the upper cleaning mechanism and the lower cleaning mechanism are arranged to respectively clean the upper surface and the lower surface of the steel plate, so that particulate matters attached to the surface of the steel plate are prevented from damaging the leveling rollers; the cleaning roller is mounted on the floating ring capable of moving up and down for position adjustment, so that the distance between the cleaning roller and the highest position of the surface of the steel plate is constant, and the cleaning effect of the cleaning roller on the surface of the steel plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel plate processing equipment, and specifically discloses a leveling machine. Background Art

[0002] The leveling machine is also known as the correction machine or the leveling machine. It has groups of leveling rollers arranged alternately from the feed port to the discharge port. The material is bent multiple times in the positive and negative directions by the staggered rotating upper and lower leveling rollers, so that the unevenness of the original curvature of the leveled plate and the degree of alternating bending are gradually reduced, thereby achieving reliable leveling. When processing steel plates, such as making steel plate mesh, the steel plates need to be leveled to improve the flatness of the steel plates, thereby avoiding problems such as uneven mesh surface and irregular mesh shape in the processed steel plate mesh.

[0003] For example, the patent with announcement number CN213887652U, with announcement date of 2021-08-06, specifically discloses a steel plate leveling machine for large-scale steel structure processing, which reduces the labor intensity of workers, improves work efficiency, and improves economy and practicality; it includes a bracket, a workbench, a first support plate, a drive shaft, a driven shaft, gears, chains, a motor bracket, a motor and a transmission, the workbench is fixedly installed on the upper end of the bracket, two groups of first support plates are fixedly installed on the upper end of the workbench, four groups of drive shafts are rotatably installed between the two groups of first support plates, the four groups of drive shafts are arranged longitudinally and horizontally, three groups of driven shafts are rotatably installed between the two groups of first support plates, the three groups of driven shafts are located above the four groups of drive shafts, and the three groups of driven shafts are staggered with the four groups of drive shafts, four groups of rotating shafts are arranged on the four groups of drive shafts, the rotating shafts are fixedly installed on the right end of the drive shafts, and the four groups of gears are respectively fixedly installed on the right ends of the four groups of rotating shafts.

[0004] Existing steel plate leveling machines, including the above-mentioned patent, need to adjust the distance between the upper and lower leveling rollers to a suitable leveling distance before leveling the steel plate. This causes the front end of the steel plate (the side that preferentially enters between the upper and lower leveling rollers of the leveling machine) to be excessively warped or sunken, resulting in the steel plate being unable to enter the leveling area or being tilted during the leveling process, resulting in the inability to level or a reduction in the leveling effect. Utility Model Content

[0005] The utility model aims to provide a leveling machine.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A leveling machine comprises a frame, on which a plurality of lower leveling rollers and a plurality of upper leveling rollers are rotatably mounted, the lower leveling rollers and the upper leveling rollers are staggered left and right, an extrusion assembly is arranged on one side of the frame, the extrusion assembly comprises an upper pressure roller and a lower pressure roller rotatably mounted on the frame, the upper pressure roller and the lower pressure roller are arranged vertically opposite to each other, the lower pressure roller and the lower leveling rollers are arranged in the same horizontal plane, a driving member is arranged on the bracket, the driving member drives the upper pressure roller to approach or move away from the lower pressure roller.

[0008] The above-mentioned leveling machine, the driving part includes a hydraulic cylinder fixedly connected to the frame, the hydraulic cylinder is vertically arranged, and mounting blocks are slidably installed on both sides of the frame. The two ends of the upper pressure roller are respectively rotatably connected to the corresponding mounting blocks. The hydraulic cylinder corresponds to the mounting blocks one by one, and the output end of the hydraulic cylinder is fixedly connected to the corresponding mounting block.

[0009] In the above-mentioned leveling machine, a first motor is fixedly connected to a mounting block, and the output shaft of the motor is coaxially connected to the upper pressure roller. A second motor is fixedly connected to the frame, and the output shaft of the second motor is coaxially connected to the lower pressure roller.

[0010] The above-mentioned leveling machine has an upper cleaning mechanism rotatably connected between the two mounting blocks, the upper cleaning mechanism is transmission connected to the upper pressure roller, the upper pressure roller is arranged between the upper leveling roller and the upper cleaning mechanism, and a lower cleaning mechanism is rotatably installed on the frame, the lower cleaning mechanism is transmission connected to the lower pressure roller, and the lower cleaning mechanism and the upper cleaning mechanism are arranged vertically opposite to each other.

[0011] The above-mentioned leveling machine, the upper cleaning mechanism includes a transmission shaft, the transmission shaft is transmission-connected to the upper pressure roller, both ends of the transmission shaft are provided with floating rings, the floating rings are installed on the corresponding mounting blocks through elastic parts, a cleaning roller is rotatably installed between the two floating rings, a transmission part is arranged between the cleaning roller and the transmission shaft, when the floating ring floats up and down outside the transmission shaft, the cleaning roller maintains transmission connection with the transmission shaft, the upper cleaning mechanism also includes a limit part, the limit part maintains the distance between the floating ring and the workpiece.

[0012] In the above-mentioned leveling machine, a first gear is sleeved on the rotating shaft of the upper pressure roller, a second gear is sleeved on the transmission shaft, and the first gear and the second gear are meshed with each other.

[0013] In the above-mentioned leveling machine, the structure of the lower cleaning mechanism is the same as that of the upper cleaning mechanism, and the lower cleaning mechanism and the upper cleaning mechanism are symmetrically arranged in the upper and lower directions.

[0014] The above-mentioned leveling machine, the transmission part includes a first rod fixedly connected to the inner wall of the cleaning roller, the first rod is arranged along the radial direction of the cleaning roller, the outside of the transmission shaft is provided with a mounting plate, the edge position of the mounting plate is fixedly connected with a second rod, the second rod is arranged parallel to the central axis of the transmission shaft, and the second rod extends to the side where the first rod is located.

[0015] The above-mentioned leveling machine, the elastic part includes a fixed rod fixedly connected to the corresponding mounting block, an adjusting rod is slidably mounted on the fixed rod, the upper end of the adjusting rod passes through the fixed rod and has a protrusion formed along its own circumference, a spring is mounted on the adjusting rod, the lower part of the adjusting rod has a stopper formed along its own circumference, and the lower end of the adjusting rod is fixedly connected to the corresponding floating ring, and the two ends of the spring are respectively in contact with the fixed rod and the stopper.

[0016] In the above-mentioned leveling machine, the limiting member comprises a limiting rod fixedly connected to each floating ring, and one end of the limiting rod away from the floating ring is bent toward between the two upper cleaning mechanisms and the lower cleaning mechanism.

[0017] In the above technical scheme, the leveling machine provided by the utility model is provided with an extrusion assembly at the feeding end of the leveling machine, and the upper pressure roller is driven to move toward the lower pressure roller, so that the steel plate preferentially enters one end between the upper leveling roller and the lower leveling roller for preliminary leveling, and upper and lower cleaning mechanisms are provided to clean the upper and lower surfaces of the steel plate respectively, so as to prevent the particles attached to the surface of the steel plate from damaging the leveling rollers, and by installing the cleaning roller on a floating ring that can move up and down for position adjustment, it is ensured that the distance between the cleaning roller and the highest point of the steel plate surface is constant, thereby improving the cleaning effect of the cleaning roller on the steel plate surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A right side view of a frame provided by an embodiment of the utility model;

[0020] Figure 2 A partial cross-sectional view of a frame provided by an embodiment of the utility model;

[0021] Figure 3 A partial cross-sectional view of an upper cleaning mechanism provided in an embodiment of the utility model;

[0022] Figure 4 A schematic diagram of a floating ring before floating provided by an embodiment of the utility model;

[0023] Figure 5 A schematic diagram of a floating ring in a floating state according to an embodiment of the utility model;

[0024] Figure 6 A schematic diagram of the transmission relationship between the upper pressure roller and the transmission shaft provided in an embodiment of the utility model;

[0025] Figure 7The embodiment of the utility model provides Figure 2 The enlarged schematic diagram at A in the middle;

[0026] Figure 8 The embodiment of the utility model provides Figure 3 Enlarged schematic diagram of point B in the middle.

[0027] Description of reference numerals:

[0028] 1. Frame; 11. Lower leveling roller; 12. Upper leveling roller; 13. Hydraulic cylinder; 14. Mounting block; 15. First motor; 16. Second motor; 2. Extrusion assembly; 21. Upper pressure roller; 211. First gear; 22. Lower pressure roller; 3. Upper cleaning mechanism; 31. Transmission shaft; 311. Second gear; 32. Floating ring; 33. Cleaning roller; 4. Lower cleaning mechanism; 5. Elastic member; 51. Fixed rod; 52. Adjusting rod; 53. Spring; 54. Stopper; 6. Transmission member; 61. First rod; 62. Mounting plate; 63. Second rod; 7. Limit rod. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030] In the description of the present utility model, unless otherwise specified, "multiple" means two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] like Figure 1-Figure 8As shown, a leveling machine provided by an embodiment of the utility model includes a frame 1, on which a plurality of lower leveling rollers 11 and a plurality of upper leveling rollers 12 are rotatably mounted, the lower leveling rollers 11 and the upper leveling rollers 12 are staggered left and right, an extrusion assembly 2 is arranged on one side of the frame 1, the extrusion assembly 2 includes an upper pressure roller 21 and a lower pressure roller 22 rotatably mounted on the frame 1, the upper pressure roller 21 and the lower pressure roller 22 are arranged vertically opposite to each other, the lower pressure roller 22 and the lower leveling rollers 11 are arranged on the same horizontal plane, and a driving member is arranged on the bracket, the driving member drives the upper pressure roller 21 to approach or move away from the lower pressure roller 22.

[0032] Specifically, the frame 1 is also equipped with a driving mechanism for driving the lower leveling rollers 11 and the upper leveling rollers 12 to rotate synchronously. This is a prior art and will not be described in detail. It can be directly applied. During implementation, sliding blocks can be slidably installed on both sides of the frame 1, and the two ends of each upper leveling roller 12 can be rotatably connected to the frame 1 respectively. The sliding block is driven by a linear driving mechanism to slide up and down on the frame 1, thereby changing the distance between the lower leveling roller 11 and the upper leveling roller 12 to adapt to the leveling work of steel plates of different thicknesses.

[0033] Furthermore, the driving member includes a hydraulic cylinder 13 fixed to the frame 1, the hydraulic cylinder 13 is vertically arranged, and mounting blocks 14 are slidably installed on both sides of the frame 1. The two ends of the upper pressure roller 21 are respectively rotatably connected to the corresponding mounting blocks 14. The hydraulic cylinder 13 corresponds to the mounting blocks 14 one by one, and the output end of the hydraulic cylinder 13 is fixedly connected to the corresponding mounting blocks 14. The hydraulic cylinder 13 extends to drive the upper pressure roller 21 to move toward the lower pressure roller 22, thereby reducing the distance between the upper and lower pressure rollers 22. The upper pressure roller 21 and the lower pressure roller 22 are used to squeeze the front end of the steel plate to reduce the size of the front end of the steel plate along its own thickness direction, so that the steel plate can enter between the upper leveling roller 12 and the lower leveling roller 11 for leveling.

[0034] Optionally, a first motor 15 is fixedly connected to the mounting block 14 , and the output shaft of the motor is coaxially connected to the upper pressure roller 21 . A second motor 16 is fixedly connected to the frame 1 , and the output shaft of the second motor 16 is coaxially connected to the lower pressure roller 22 .

[0035] In another embodiment of the utility model, an upper cleaning mechanism 3 is rotatably connected between the two mounting blocks 14, the upper cleaning mechanism 3 is transmission-connected to the upper pressure roller 21, the upper pressure roller 21 is arranged between the upper leveling roller 12 and the upper cleaning mechanism 3, and a lower cleaning mechanism 4 is rotatably installed on the frame 1, the lower cleaning mechanism 4 is transmission-connected to the lower pressure roller 22, and the lower cleaning mechanism 4 and the upper cleaning mechanism 3 are arranged vertically opposite each other.

[0036] Further, the upper cleaning mechanism 3 includes a transmission shaft 31, which is transmission-connected with the upper pressure roller 21, and both ends of the transmission shaft 31 are provided with floating rings 32, which are mounted on the corresponding mounting blocks 14 through elastic members 5, and a cleaning roller 33 is rotatably mounted between the two floating rings 32, the cleaning roller 33 includes a cylinder and bristles evenly arranged along the circumference of the cylinder, and a transmission member 6 is arranged between the cleaning roller 33 and the transmission shaft 31, and when the floating ring 32 floats up and down outside the transmission shaft 31, the cleaning roller 33 maintains transmission connection with the transmission shaft 31, and the upper cleaning mechanism 3 also includes a limiter, which maintains the distance between the floating ring 32 and the workpiece;

[0037] Specifically, two floating rings 32 are mounted on the outside of the transmission shaft 31, and the floating rings 32 are connected to the corresponding mounting blocks 14 through the elastic members 5, and a limit member is provided to limit the floating rings 32, so as to ensure that the floating rings 32 are always at a certain distance from the surface of the steel plate, while enabling the floating rings 32 to move up and down relative to the transmission shaft 31 and to receive the transmission of the transmission shaft 31; when the upper pressure roller 21 is driven to squeeze the end of the steel plate and preliminarily flatten the end of the steel plate (reducing the maximum dimension of the steel plate along its own thickness direction so that the steel plate can smoothly enter between the upper leveling roller 12 and the lower leveling roller 11 for leveling), the roller surface of the cleaning roller 33 will not contact the position of the steel plate that has not been preliminarily leveled, so as to prevent the bristles on the cleaning roller 33 from being damaged due to contact with the bulging position of the steel plate, and to ensure the cleaning effect of the bristles of the cleaning roller 33 on the surface of the steel plate.

[0038] Furthermore, a first gear 211 is sleeved on the rotating shaft of the upper pressure roller 21, and a second gear 311 is sleeved on the transmission shaft 31. The first gear 211 and the second gear 311 are meshed with each other. Preferably, the first gear 211 is larger than the second gear 311, so that the rotation speed of the transmission shaft 31 is always greater than the rotation speed of the upper pressure roller 21, thereby improving the cleaning effect of the cleaning roller 33 on the surface of the steel plate.

[0039] Preferably, the structure of the lower cleaning mechanism 4 is the same as that of the upper cleaning mechanism 3, and the lower cleaning mechanism 4 and the upper cleaning mechanism 3 are symmetrically arranged in the upper and lower directions. Another second gear 311 is sleeved on the transmission shaft 31 in the lower cleaning mechanism 4, and another first gear 211 is sleeved on the rotating shaft of the lower pressure roller 22. The other first gear 211 is meshed with the other second gear 311 to realize the transmission connection between the lower pressure roller 22 and the transmission shaft 31 in the lower cleaning mechanism 4. The specific arrangement is as follows: Figure 7 shown.

[0040] Furthermore, the transmission member 6 includes a first rod 61 fixedly connected to the inner wall of the cleaning roller 33, the first rod 61 is arranged along the radial direction of the cleaning roller 33, the outer part of the transmission shaft 31 is provided with a mounting plate 62, the edge position of the mounting plate 62 is fixedly connected with a second rod 63, the second rod 63 is arranged parallel to the central axis of the transmission shaft 31, and the second rod 63 extends to the side where the first rod 61 is located.

[0041] Specifically, when the floating ring 32 moves upward or downward relative to the transmission shaft 31, the second rod 63 can always contact the first rod 61 within the rotation stroke of the transmission shaft 31, and the cleaning roller 33 is pushed to rotate through the first rod 61 to clean the surface of the steel plate.

[0042] Furthermore, if Figure 7 As shown, the elastic member 5 includes a fixed rod 51 fixedly connected to the corresponding mounting block 14, an adjusting rod 52 is slidably mounted on the fixed rod 51, the upper end of the adjusting rod 52 passes through the fixed rod 51 and is formed with a protrusion along its own circumference, a spring 53 is mounted on the adjusting rod 52, a stopper 54 is formed on the lower part of the adjusting rod 52 along its own circumference, and the lower end of the adjusting rod 52 is fixedly connected to the corresponding floating ring 32, and both ends of the spring 53 are in contact with the fixed rod 51 and the stopper 54 respectively.

[0043] Specifically, the spring 53 cooperates with the adjusting rod 52 so that the floating ring 32 is always subjected to the downward thrust from the adjusting rod 52, and the limiter limits the distance between the floating ring 32 and the steel plate, ensuring that the bristles can always contact the surface of the steel plate.

[0044] Optionally, the limit member includes a limit rod 7 fixedly connected to each floating ring 32, and one end of the limit rod 7 away from the floating ring 32 is bent between the two upper cleaning mechanisms 3 and the lower cleaning mechanism 4. Preferably, a roller is rotatably installed on the end of the limit rod 7 away from the floating ring 32. Since the length of the limit rod 7 is constant and the end thereof away from the floating ring 32 is always in contact with the surface of the steel plate, when encountering a raised position of the steel plate, the limit rod 7 will push the floating ring 32 to move upward relative to the transmission shaft 31, thereby ensuring that the cleaning roller 33 is always at a constant distance from the highest point on the upper surface of the steel plate, thereby preventing the cleaning roller 33 from being hit by the bulging position of the steel plate and causing damage to the bristles. Preferably, the two limit rods 7 are connected by a cross bar, and a vertical bar is fixedly connected to the cross bar, wherein the cross bar is horizontally arranged and the vertical bar is vertically arranged, and the lower end of each vertical bar is rotatably connected to a roller, so that the accuracy of the limit member in adjusting the floating ring 32 can be improved, and when the steel plate bulges upward only at a position close to the middle of the cleaning roller 33, the floating ring 32 can also be adjusted.

[0045] When leveling the steel plate, the front end of the steel plate is placed between the upper pressure roller 21 and the lower pressure roller 22, and the hydraulic cylinder 13 drives the mounting block 14 to slide downward along the restricted direction of the frame 1. A slide groove (not shown in the figure) for guiding the mounting block 14 is vertically opened on the frame 1. The upper pressure roller 21 contacts the upper surface of the end position of the steel plate and squeezes the end of the steel plate so that the end of the steel plate gradually tends to a horizontal state, that is, the end of the steel plate is preliminarily leveled. In this process, the upper pressure roller 21 is driven to rotate by the first motor 15, and drives the transmission shaft 31 to rotate through the meshing relationship between the first gear 211 and the second gear 311. During the rotation, the transmission shaft 31 drives the second rod 63 fixed on the mounting plate 62 to revolve around the central axis of the transmission shaft 31. During the rotation, the second rod 63 pushes the first rod 61 to revolve around the central axis of the floating ring 32, thereby driving the cleaning roller 33 to rotate between the two floating rings 32 to achieve cleaning of the upper and lower surfaces of the steel plate.

[0046] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A leveling machine, comprising a frame, on which a plurality of lower leveling rollers and a plurality of upper leveling rollers are rotatably mounted, wherein the lower leveling rollers and the upper leveling rollers are staggered left and right, and characterized in that: An extrusion assembly is arranged on one side of the frame, and the extrusion assembly includes an upper pressure roller and a lower pressure roller rotatably mounted on the frame, the upper pressure roller and the lower pressure roller are arranged vertically opposite to each other, the lower pressure roller and each lower leveling roller are arranged on the same horizontal plane, and a driving member is arranged on the bracket, and the driving member drives the upper pressure roller to approach or move away from the lower pressure roller.

2. A leveling machine according to claim 1, characterized in that: The driving part includes a hydraulic cylinder fixedly connected to the frame. The hydraulic cylinder is vertically arranged. Mounting blocks are slidably installed on both sides of the frame. The two ends of the upper pressure roller are rotatably connected to the corresponding mounting blocks respectively. The hydraulic cylinder corresponds to the mounting blocks one by one, and the output end of the hydraulic cylinder is fixedly connected to the corresponding mounting block.

3. A leveling machine according to claim 2, characterized in that: A first motor is fixedly connected to the mounting block, and the output shaft of the motor is coaxially connected to the upper pressure roller. A second motor is fixedly connected to the frame, and the output shaft of the second motor is coaxially connected to the lower pressure roller.

4. A leveling machine according to claim 3, characterized in that: An upper cleaning mechanism is rotatably connected between the two mounting blocks, the upper cleaning mechanism is transmission connected to the upper pressure roller, the upper pressure roller is arranged between the upper leveling roller and the upper cleaning mechanism, a lower cleaning mechanism is rotatably installed on the frame, the lower cleaning mechanism is transmission connected to the lower pressure roller, and the lower cleaning mechanism and the upper cleaning mechanism are arranged vertically opposite to each other.

5. A leveling machine according to claim 4, characterized in that: The upper cleaning mechanism includes a transmission shaft, which is in transmission connection with the upper pressure roller. Both ends of the transmission shaft are provided with floating rings, which are mounted on corresponding mounting blocks through elastic parts. A cleaning roller is rotatably mounted between the two floating rings. A transmission part is arranged between the cleaning roller and the transmission shaft. When the floating ring floats up and down outside the transmission shaft, the cleaning roller maintains transmission connection with the transmission shaft. The upper cleaning mechanism also includes a limit part, which maintains the distance between the floating ring and the workpiece.

6. A leveling machine according to claim 5, characterized in that: A first gear is sleeved on the rotating shaft of the upper pressure roller, a second gear is sleeved on the transmission shaft, and the first gear and the second gear are meshed with each other.

7. A leveling machine according to claim 5, characterized in that: The structure of the lower cleaning mechanism is the same as that of the upper cleaning mechanism, and the lower cleaning mechanism and the upper cleaning mechanism are symmetrically arranged up and down.

8. A leveling machine according to claim 5, characterized in that: The transmission member includes a first rod fixedly connected to the inner wall of the cleaning roller, the first rod is arranged along the radial direction of the cleaning roller, a mounting plate is sleeved on the outside of the transmission shaft, a second rod is fixed along the edge of the mounting plate, the second rod is arranged parallel to the central axis of the transmission shaft, and the second rod extends to the side where the first rod is located.

9. A leveling machine according to claim 5, characterized in that: The elastic part includes a fixed rod fixedly connected to the corresponding mounting block, an adjusting rod is slidably mounted on the fixed rod, the upper end of the adjusting rod passes through the fixed rod and has a protrusion formed along its circumference, a spring is mounted on the adjusting rod, a stopper is formed on the lower part of the adjusting rod along its circumference, and the lower end of the adjusting rod is fixedly connected to the corresponding floating ring, and the two ends of the spring are respectively in contact with the fixed rod and the stopper.

10. A leveling machine according to claim 5, characterized in that: The limiting member comprises a limiting rod fixedly connected to each floating ring, and one end of the limiting rod away from the floating ring is bent between the two upper cleaning mechanisms and the lower cleaning mechanism.

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