Polishing machine track and polishing machine

Abstract

This utility model relates to a polishing machine track and a polishing machine. The polishing machine track includes a track body laid on the template surface. The track body consists of a steel wire rope and multiple radial protrusions fixed at intervals on the steel wire rope. Using this structure, when laying the track, the operator only needs to swing and straighten the track on both sides of the arched template of the tunnel secondary lining trolley, adjust the spacing between the two tracks and ensure that the starting positions of the two tracks are consistent, and then fix the two tracks to the bottom ends of both sides of the template. Based on the pressure requirements between the polishing machine and the template surface, the track is tightened before starting the polishing machine for polishing work. This significantly reduces the time and difficulty of track installation, while also eliminating the need to consider the meshing problem between the track and the main guide wheel.

Description

Technical Field

[0001] This utility model relates to the field of secondary lining trolley template polishing technology, specifically to polishing machine track and polishing machine. Background Technology

[0002] In existing technology, polishing machines are used to polish the surface of secondary lining trolley templates to improve safety and polishing efficiency. When the polishing machine moves on the surface of the secondary lining trolley template, a track is required to guide its movement. Currently, there are three main types of tracks for polishing machines, as detailed below:

[0003] I. As described in the prior patent CN202021318014.5 - Secondary Lining Trolley Template Polishing Device, which uses a roller chain track (similar to a bicycle chain), during use, it is essential to ensure that the surface of one roller (meshing groove) of the roller chain track faces the surface of the trolley template. However, the length of the polishing machine's roller brush is limited, and the secondary lining trolley template is quite long along the tunnel direction. Therefore, during polishing operations, the polishing machine needs frequent position adjustments. This necessitates manual climbing onto the template surface to ensure the roller chain's meshing groove is aligned with the template surface when laying the roller chain track, wasting a significant amount of time. Furthermore, due to the structure of the roller chain, it is prone to knotting during laying. If the track is not laid properly, it can damage the chain track and the main guide wheel, or even damage the polishing machine itself.

[0004] Second, using ordinary hoisting chain tracks is problematic because when a hoisting chain is under load, the two connecting links are perpendicular to each other. However, each time a polishing machine polishes, to ensure that the drive wheel and chain mesh properly, the chain tracks on both sides of the polishing machine must be kept equidistant and synchronous, and the adjacent links of the chain must be perpendicular to each other. Otherwise, the chain, the inner groove wall of the drive wheel, and even the drive shaft of the polishing machine will be damaged. Moreover, because the adjacent links of the hoisting chain are movably connected, the hoisting chain track is more prone to knotting than the roller chain track.

[0005] Third, using ordinary ropes or wire ropes as tracks presents challenges. Both types of ropes struggle to generate sufficient friction with the main guide wheel of the polishing machine, leading to slippage during operation. Furthermore, the high elongation of ordinary ropes can cause insufficient tension, resulting in malfunctions. Additionally, when using ordinary ropes or wire ropes as tracks, the operator typically swings the ropes on both sides of the arched formwork of the tunnel secondary lining trolley to straighten them and adjust the distance between the two tracks. However, the large contact area between the ropes and the formwork surface generates significant friction, creating considerable resistance when swinging the ropes and complicating track laying. Summary of the Invention

[0006] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a polishing machine track and a polishing machine.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] The polishing machine track includes a track body laid on the template surface, the track body consisting of a steel wire rope and a plurality of radial protrusions fixed at intervals on the steel wire rope.

[0009] The radial protrusion is a radial annular protrusion.

[0010] Furthermore, the radial protrusion is a radial annular protrusion, and its cross-sectional profile perpendicular to the wire rope axis is a closed geometric shape with rotational symmetry.

[0011] Furthermore, the radial annular protrusion, which contacts the surface of the trolley template and has a roughly circular cross-section perpendicular to the wire rope axis, is in contact with the template surface.

[0012] Furthermore, the cross-section of the radial annular protrusion that contacts the surface of the trolley template and is perpendicular to the wire rope axis is an end plane. End plane: On a cylindrical gear or cylindrical worm, a plane perpendicular to its axis.

[0013] Furthermore, the outer peripheral surface of the radial protrusion is a surface of revolution, and the cross-section of the annular protrusion perpendicular to the axis is approximately circular.

[0014] Furthermore, the axis of rotation of the rotating surface coincides with the axis of the wire rope.

[0015] Furthermore, the outer peripheral surface of the radial protrusion is a cylindrical surface, a spherical surface, a drum-shaped curved surface, or a conical surface.

[0016] Furthermore, the two end faces of the radial protrusion along the axial direction of the wire rope are planar.

[0017] Furthermore, the radial protrusion is sleeved on the outer circumferential surface of the wire rope, and the annular protrusion is press-fitted with the wire rope in an interference fit.

[0018] Furthermore, the radial protrusion is formed from metal or plastic steel material.

[0019] Furthermore, the wire rope is provided with radial protrusions at equal intervals along its axial direction.

[0020] Furthermore, the diameter of the wire rope is 6-12 mm.

[0021] A polishing machine is used in conjunction with the aforementioned track. The polishing machine has a drive wheel assembly, which includes a drive wheel and at least one guide wheel. The drive wheel is driven to rotate by a drive motor. The drive wheel and the guide wheel are respectively provided with meshing grooves at intervals along the circumferential direction, which mesh with the radial protrusions on the wire rope. The wire rope curves through each guide wheel and the drive wheel, driving the drive wheel to rotate, thereby causing the polishing machine to crawl along the track on the surface of the secondary lining trolley template.

[0022] Furthermore, the walking drive wheel set is located at one end of the polishing machine, and the other end of the polishing machine has a cable wheel set, which includes at least two cable wheels. The cable wheels are provided with meshing grooves at intervals along the circumferential direction, which mesh with the radial protrusions on the wire rope. The wire rope curves through each cable wheel.

[0023] Furthermore, the meshing grooves on the drive wheel, guide wheel, and cable pulley are all approximately semi-cylindrical in shape.

[0024] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0025] The track of this utility model polishing machine uses radial protrusions attached to steel wire ropes as the track. It utilizes the rigidity, flexibility, and minimal ductility of the steel wire rope. The radial protrusions, especially the annular protrusions with roughly circular or flat end faces that contact the track laying surface and are perpendicular to the wire rope axis, significantly reduce the contact area between the track and the template during laying. Crucially, this design ensures a proper fit between the overall track and the meshing groove of the main guide wheel. During track laying, the operator simply swings and straightens the track on both sides of the arched template of the tunnel secondary lining trolley, adjusting the spacing between the two tracks and ensuring they are aligned correctly. With the starting position consistent, connect the polishing machine to the track, then fix the two tracks to the bottom ends on both sides of the template. According to the pressure requirements of the polishing machine and the template surface, tighten the track and start the polishing machine to carry out polishing work. In particular, when the main body of the track is made of steel wire rope and radial annular protrusions with cylindrical, drum-shaped, cylindrical gear or spherical shapes on the outer surface, any point on the surface of the protrusion within 360 degrees will not affect the matching with the meshing groove of the main guide wheel. It can be seen that using the above track greatly reduces the time and difficulty of track installation, while eliminating the need to consider the meshing problem between the track and the main guide wheel, and ensuring that there is a sufficiently large friction between the track and the main guide wheel of the polishing machine to drive the polishing machine to operate reliably. Attached Figure Description

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0027] Figure 1This is a schematic diagram of the polishing mill track;

[0028] Figure 2 This is a schematic diagram showing the cross-section of the radially protruding part perpendicular to the axis, which is shaped like a fan ring.

[0029] Figure 3 This is a schematic diagram showing the cross-section of the radially protruding part, which is a polygon with an irregular side, perpendicular to the axis.

[0030] Figure 4 A schematic diagram showing the cross-section of the radial annular protrusion perpendicular to the axis, which is an equilateral polygon.

[0031] Figure 5 This is a side view of the radially annular protrusion, where the central protruding surface has a circular cross-section.

[0032] Figure 6 This is a schematic diagram showing the cross-section of the radial annular protrusion perpendicular to the axis, with an end plane.

[0033] Figure 7 This is a schematic diagram showing that the outer peripheral surface of the radial annular protrusion is a surface of revolution.

[0034] Figure 8 This is a schematic diagram of the polishing mill.

[0035] Figure 9 This is a schematic diagram of the drive wheel.

[0036] Figure 10 This is a diagram showing the routing of the wire rope on the polishing machine.

[0037] Figure 11 This is a schematic diagram of a polishing machine working on the surface of a secondary lining trolley template. Detailed Implementation

[0038] like Figure 1 As shown, the present invention's polishing machine track includes a track body 1 laid on the surface of the secondary lining trolley template. The track body 1 is composed of a steel wire rope 11 and a plurality of radial protrusions 12 fixed at intervals on the steel wire rope 11.

[0039] In this embodiment, the radial protrusion 12 has a fan-shaped cross-section that contacts the track laying surface (template surface) and is perpendicular to the axis of the wire rope 11, such as... Figure 2 The corresponding polishing machine's drive wheel and guide wheel are respectively provided with meshing grooves along the circumferential direction that mesh with the radial annular protrusions. These grooves can be set in a semi-cylindrical shape or approximately a semi-cylindrical shape to match the polishing machine's drive wheel and guide wheel.

[0040] In another embodiment, the radial protrusion 12 is a radial annular protrusion. This radial annular protrusion, in contact with the track laying surface (template surface) and perpendicular to the axis of the wire rope 11, has a cross-section that is an unequal-sided 12-sided polygon, such as... Figure 3 As shown, the radial protrusion 12 is a radial annular protrusion, and its cross-sectional profile perpendicular to the wire rope axis forms a closed geometric shape. The corresponding grinding machine drive wheel and guide wheel are respectively provided with meshing grooves along the circumferential direction to mesh with the radial annular protrusion. These grooves can be set in a semi-cylindrical shape or approximately a semi-cylindrical shape to fit with it.

[0041] In addition, the radial protrusion 12 may also be a radial annular protrusion whose cross-sectional profile perpendicular to the wire rope axis is a rotationally symmetric closed geometry.

[0042] In another embodiment, the radial protrusion 12 is a radial annular protrusion. This radial annular protrusion, in contact with the track laying surface (template surface) and perpendicular to the axis of the wire rope 11, has a cross-section that is a regular decagon, such as... Figure 4 As shown, the meshing grooves on the corresponding polishing machine's drive wheel and guide wheel can also be set in a semi-cylindrical shape or approximately a semi-cylindrical shape at intervals along the circumferential direction to match it.

[0043] In another embodiment, the radial protrusion 12 is a radial annular protrusion. The cross-section of this radial annular protrusion, which contacts the track laying surface (template surface) and is perpendicular to the axis of the wire rope 11, is circular. Other parts can be irregularly shaped, such as... Figure 5 As shown, the cross-section 121 in the middle part is circular, and the two ends are irregular structures. The corresponding grinding machine drive wheel and guide wheel are respectively provided with meshing grooves of the same shape as the radial annular protrusion along the circumferential direction to mesh with it.

[0044] In another embodiment, the radial protrusion 12 is a radial annular protrusion. The cross-section of this radial annular protrusion, which contacts the track laying surface (template surface) and is perpendicular to the axis of the wire rope 11, is a cylindrical gear end face shape, such as... Figure 6 As shown, the meshing grooves on the corresponding polishing machine's drive wheel and guide wheel can also be set in a semi-cylindrical shape or approximately a semi-cylindrical shape at intervals along the circumferential direction to match it.

[0045] In another embodiment, such as Figure 1 As shown, the present invention's polishing machine track includes a track body 1 laid on the surface of the secondary lining trolley template. The track body 1 is composed of a steel wire rope 11 and a plurality of radial protrusions 12 fixed at intervals on the steel wire rope 11.

[0046] Specifically, the track of this invention consists of a hollow metal radial protrusion 12 nested and fixed at equal intervals along the axial direction of the wire rope 11, followed by pressing. The method for fixing the radial protrusion 12 to the wire rope 11 is as follows:

[0047] A corresponding pressing mold is made according to the shape of the radial protrusion 12, and a corresponding hydraulic press is installed. The hydraulic cylinder pressure is adjusted according to the frictional force required for the connection between the radial protrusion 12 and the wire rope 11. Then, the wire rope 11 with the radial protrusion 12 (e.g., a cylinder) is placed into the hydraulic press for pressing, so that the hollow cylinder and the wire rope 11 are integrated to form a cylindrical radial protrusion 12. Of course, in order to ensure the reliability of the radial protrusion 12 fixed on the wire rope 11, a clamping screw can be screwed onto the radial protrusion 12. The root of the clamping screw is tightly pressed against the wire rope 11, thereby ensuring the reliability of the connection and fixation. To further ensure the reliability of the clamping screw, a countersunk hole can be set on the outer circumferential surface of the radial protrusion. The screw head is buried in the hole and then glue is poured into the countersunk hole to solidify, ensuring that the screw does not loosen. The technical solution of screwing a clamping screw onto the radial protrusion 12, setting a countersunk hole on the outer circumferential surface of the radial protrusion, and filling the countersunk hole with glue can also be used in other embodiments of this application.

[0048] Because the tunnel lining trolley template is quite long, it is necessary to disassemble and reposition the rails to enable multiple polishing operations by the polishing machine. Therefore, both ends of the wire rope 11 are detachably connected and fixed to the two ends of the template. Generally, a rope tensioner is used to achieve the detachable connection, and the tension of the wire rope 11 can be adjusted by the rope tensioner.

[0049] In this embodiment, the radial protrusion 12 is a radial annular protrusion. The cross-section of this radial annular protrusion, which contacts the track laying surface (template surface) and is perpendicular to the axis of the wire rope 11, is circular; a circular cross-section is the ideal state. Furthermore, the outer peripheral surface of the radial protrusion 12 is a surface of revolution, such as... Figure 7 As shown, the surface of revolution can be a cylindrical surface (a), a spherical surface (b), a drum-shaped surface (c), or a conical surface (d), etc., corresponding to hollow cylinders, hollow spheres, spherical rings (shaped like abacus beads), and frustums of cones, etc. Of course, the surface of revolution can also have a wavy outer perimeter (e), a semi-pentagonal longitudinal section (f), or other regular or irregular longitudinal cross-sectional shapes. Correspondingly, the meshing grooves on the polishing machine's drive wheel and guide wheel can be designed to match the shape of the radial annular protrusion.

[0050] To improve the stability of the guide, the axis of the rotating surface coincides with the axis of the wire rope 11. At the same time, to facilitate the machining of the radial protrusions of the track and the meshing grooves spaced along the circumferential direction on the drive wheel and guide wheel of the polishing machine, the radial annular protrusions on the wire rope along its axial direction are equally spaced.

[0051] In addition, the two ends of the radial protrusion 12 along the axis of the wire rope 11 are flat, and the use of a flat structure (increased force-bearing area) to mesh with the meshing groove can improve the reliability of meshing.

[0052] The following describes in detail the preparation of the polishing machine track, taking a hollow cylinder made of Q235B carbon steel with a radial annular protrusion as an example. The hollow cylinder is 21.5mm long and has an outer diameter of 18mm. Due to the possibility of slight deformation in the cross-section of the wire rope, the inner diameter of the hollow part is chosen to be 8.5mm. The hollow cylinder is fitted onto the wire rope 11, with the distance between adjacent end faces of the two hollow cylinders being 65mm. Then, the hollow cylinder 12 fitted onto the wire rope is placed into a pre-made mold and pushed into a hydraulic press for pressing. The pressure is set to 65 MPa. After pressing, the outer circumference of the hollow cylinder is slightly deformed, such as... Figure 1 As shown in the figure, the radial protrusion is press-fitted with the wire rope in an interference fit.

[0053] Another method involves placing the hollow cylinder 12, which is previously attached to the wire rope 11, into a clamping machine for clamping. The clamping pressure is set to 10 MPa. After clamping, the length of the hollow cylinder becomes 24.5 mm, the outer diameter of the cylinder decreases, and a protrusion forms on the cylinder surface in the clamping die gap after extrusion. Its cross-section perpendicular to the axis is similar to... Figure 6 The gear end planar shape shown has a hollow part with an inner diameter reduced to 6.38mm. At this time, the radial protrusion is press-fitted with the wire rope with an interference fit. In addition, the above radial protrusion 12 can also be made of ordinary steel or stainless steel.

[0054] The wire rope 11 is generally made of carbon steel or stainless steel, and its diameter is 6-12 mm. Typically, an 8 mm diameter wire rope is used because the overall width of the polishing machine is approximately 80 cm, and its overall weight is around 210 kg. An 8 mm diameter wire rope 11 ensures both rigidity and sufficient load-bearing capacity while maintaining a degree of flexibility for track laying. Its minimal ductility ensures that the pressure applied by the wire rope to the polishing machine during polishing operations is essentially consistent with the pressure set at startup, achieving optimal polishing results.

[0055] like Figure 8 , 9As shown in Figures 10 and 11, the basic structures of the polishing roller 21 and other components on the polishing machine 2 of this utility model are all existing technologies and will not be described in detail. The characteristic of the polishing machine 2 of this utility model is the wheel set structure that cooperates with the above-mentioned track structure. Specifically, the polishing machine 2 has a walking drive wheel set, which includes a drive wheel 22 and at least one guide wheel 23. The drive wheel 22 is driven to rotate by a walking motor 24. The drive wheel 22 and the guide wheel 23 are respectively provided with meshing grooves 221 at intervals along the circumferential direction, which mesh with the radial protrusions on the wire rope. The shape of the meshing groove 221 can be consistent with the radial protrusions of the track, or the meshing groove 221 can be a shape that can accommodate the meshing of the radial protrusions. For example, when the radial protrusion is a cross-section perpendicular to the axis of the wire rope with an end plane shape, an equilateral 12-sided polygon, or an unequal 12-sided polygon, the shape of the meshing groove 221 can be consistent with the shape when the protrusion is a hollow cylinder, as long as it can be ensured that the meshing groove 221 can match and mesh with it. The wire rope curves through each guide wheel 23 and the drive wheel 22, driving the drive wheel 22 to rotate, thereby driving the polishing machine 2 to crawl along the track on the surface of the secondary lining trolley template.

[0056] Furthermore, the driving wheel assembly is located at one end of the polishing machine 2, and the other end of the polishing machine 2 has a sheave assembly, which includes at least two sheaves 25. The sheaves 25 are provided with meshing grooves along the circumferential direction, which mesh with the radial protrusions on the wire rope. The wire rope curves through each sheave 25. The specific form of the wire rope routing is shown in Figure 10.

[0057] Limiting plates 222 are provided on both sides of the drive wheel 22, which limit the wire rope and ensure reliable engagement between the meshing groove and the radial protrusion. Similarly, limiting plates are also designed on both sides of the guide wheel 23 and the cable sheave 25.

[0058] To improve the adaptability of the meshing grooves, the meshing grooves on the drive wheel 22, guide wheel 23 and cable wheel 25 are all designed in a semi-cylindrical shape.

[0059] The polishing method of this utility model includes the following steps:

[0060] Two tracks are laid on the surface of the secondary lining trolley template at a predetermined interval. One end of the two tracks is fixed to one side of the arched template of the secondary lining trolley, and the other end of the track crosses the arched template. The operator swings and straightens the two tracks on both sides of the arched template to make the two tracks parallel to each other and the radial protrusions at the starting points of the two tracks are at the same position.

[0061] After securing one end of the two tracks, the polishing machine is placed on the other end of the secondary lining trolley template. The other ends of the two tracks are then passed through the guide wheels and drive wheels in a curved shape. The operator holds the other ends of the two tracks with both hands. Figure 11As shown, the traveling motor of the polishing machine is started, and the polishing machine crawls along the surface of the secondary lining trolley template for a certain distance before stopping (crawling to a distance of about 70cm from the ground). The other ends of the two tracks are passed through the cable pulleys along the curve and then the two tracks are tightened. The other ends of the two tracks are then fixed to the other end of the secondary lining trolley template. The traveling motor and polishing roller are started, and the polishing machine crawls along the tracks on the surface of the secondary lining trolley template and begins the polishing work.

[0062] Both ends of the track are connected to the two ends of the secondary lining trolley template by rope tensioners. If the pressure applied by the wire rope to the polishing machine is not up to standard or the tension of the wire ropes on the two tracks is inconsistent during the crawling polishing process, the tension of the track is adjusted by rope tensioners.

[0063] The above describes the specific embodiments of this utility model. However, those skilled in the art should understand that this is only an example. Those skilled in the art can make various changes or modifications to this embodiment without departing from the principle and essence of this utility model. However, these changes and modifications all fall within the protection scope of this utility model. At the same time, this polishing machine can also be used in other scenarios that require polishing.

Claims

1. A polishing machine track comprising a track body laid on a surface of a template, characterized in that: The track body consists of a steel wire rope and multiple radial protrusions fixed at intervals on the steel wire rope.

2. A polishing machine track according to claim 1, characterized in that: The radial protrusion is a radial annular protrusion.

3. A polishing machine track according to claim 2, characterized in that: The radial annular protrusion has a cross-sectional profile perpendicular to the wire rope axis that is a closed geometric shape with rotational symmetry.

4. A polishing machine track according to claim 3, characterized in that: The radial annular protrusion contacts the surface of the trolley template and has a roughly circular cross-section perpendicular to the wire rope axis.

5. The polishing machine track of claim 3, wherein: The radial annular protrusion contacts the surface of the trolley template and has an end plane perpendicular to the wire rope axis.

6. The polishing machine track of claim 4, wherein: The outer peripheral surface of the radial protrusion is a surface of revolution, and the cross-section of the annular protrusion perpendicular to the axis is approximately circular.

7. A polishing machine track according to claim 6, characterized in that: The axis of rotation of the rotating surface coincides with the axis of the wire rope.

8. The polishing machine track of claim 6, wherein: The outer peripheral surface of the radial protrusion is a cylindrical surface, a spherical surface, a drum-shaped curved surface, or a conical surface.

9. The polishing machine track of claim 1, wherein: The two ends of the radial protrusion along the axis of the wire rope are flat.

10. The polishing machine track of claim 1, wherein: The radial protrusion is sleeved on the outer circumferential surface of the wire rope, and the radial protrusion is press-fitted with the wire rope in an interference fit.

11. The polishing machine track of claim 1, wherein: The radial protrusion is formed from metal or plastic steel.

12. The polishing machine track of claim 1, wherein: The wire rope is provided with radial protrusions at equal intervals along its axial direction.

13. The polishing machine track of claim 1, wherein: The diameter of the steel wire rope is 6-12 mm.

14. A polishing machine for use with the track of any one of claims 1-13, characterized in that: The polishing machine has a walking drive wheel assembly, which includes a drive wheel and at least one guide wheel. The drive wheel is driven to rotate by a walking motor. The drive wheel and the guide wheel are respectively provided with meshing grooves along the circumferential direction, which mesh with the radial protrusions on the wire rope. The wire rope curves through each guide wheel and the drive wheel, driving the drive wheel to rotate, thereby driving the polishing machine to crawl along the track on the surface of the secondary lining trolley template.

15. The polishing mill according to claim 14, characterized in that: The walking drive wheel set is located at one end of the polishing machine, and the other end of the polishing machine has a cable wheel set, which includes at least two cable wheels. The cable wheels are provided with meshing grooves along the circumferential direction that mesh with the radial protrusions on the wire rope. The wire rope curves through each cable wheel.

16. The polishing machine of claim 15, wherein: The meshing grooves on the drive wheel, guide wheel, and cable pulley are all approximately semi-cylindrical in shape.

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