Efficient grinding machine for track turnout

Abstract

The invention relates to an efficient grinding machine for a track turnout, and relates to the technical field of grinding. The efficient grinding machine comprises a frame body; the clamping and grinding assembly is installed on the frame body, and the clamping and grinding assembly is used for clamping the two opposite sides of the track and grinding the vertical side face of the track; the angle adjusting assembly is mounted on the frame body; and the rail top grinding assembly is connected with the angle adjusting assembly, a first grinding face is arranged at the bottom of the rail top grinding assembly, and the angle adjusting assembly can adjust the pitching angle of the rail top grinding assembly. The top face and the two side faces of the track turnout can be polished at the same time, the polishing efficiency is improved, and the first polishing face can polish the arc face of the top of a track by adjusting the pitching angle of the track top polishing assembly.

Description

Technical Field

[0001] The invention relates to the technical field of track grinding, in particular to a high-efficiency grinding machine for track switches. Background Art

[0002] With the increasing traffic in railways, the smoothness and safety of tracks have become the cornerstones to ensure efficient and safe operation of trains. As a key facility connecting different track lines, the status of turnouts directly affects the turning efficiency and driving safety of trains.

[0003] In the related art, when maintaining and repairing the track turnout, a handheld grinder is used to grind the surface of the track turnout. However, the handheld grinder can only grind one side of the track turnout at a time, and the grinding efficiency is low. Summary of the invention

[0004] The invention provides a high-efficiency grinder for a track turnout, which is used for improving the efficiency of track grinding.

[0005] The present invention provides a high-efficiency grinder for a rail turnout, comprising: a frame; a clamping and grinding assembly, which is mounted on the frame and used to clamp on opposite sides of a rail and grind the vertical side surfaces of the rail; an angle adjustment assembly, which is mounted on the frame; and a rail top grinding assembly, which is connected to the angle adjustment assembly, a first grinding surface being provided at the bottom of the rail top grinding assembly, and the angle adjustment assembly being capable of adjusting the pitch angle of the rail top grinding assembly.

[0006] In one embodiment, the angle adjustment assembly includes a first adjustment member, which is rotatably mounted on a frame, and a rotation axis formed between the first adjustment member and the frame is a first axis, and the first axis extends horizontally; the first adjustment member includes a first handle portion and a support portion, and the rail top grinding assembly is mounted on the support portion.

[0007] In one embodiment, the support portion is rotatably connected to the rail top grinding assembly; the angle adjustment assembly also includes a second adjusting member, which is rotatably mounted on the frame, and the second adjusting member is rotatably connected to a connecting claw, and one end of the connecting claw away from the second adjusting member is rotatably connected to the rail top grinding assembly; wherein the connecting claw, the rail top grinding assembly and the support portion constitute a cross-axis universal joint structure.

[0008] In one embodiment, the rotation axis formed between the second adjusting member and the frame is the second axis, and the second axis intersects the first axis perpendicularly at a first intersection located inside the rail top grinding assembly; the rotation axis formed between the support portion and the rail top grinding assembly is the third axis; the rotation axis formed between the connecting claw and the second adjusting member is the fourth axis; the rotation axis formed between the connecting claw and the rail top grinding assembly is the fifth axis; wherein the third axis is perpendicular to the first axis, the fifth axis and the fourth axis are both perpendicular to the second axis, and the third axis, the fourth axis and the fifth axis all extend through the first intersection.

[0009] In one embodiment, the rail top grinding assembly includes a first telescopic member, a first driving member and a first grinding block, one end of the first telescopic member is connected to the angle adjustment assembly, the other end of the first telescopic member is connected to the first driving member, the first telescopic member can be extended and retracted to adjust the height of the first driving member, the first grinding block is installed on the first driving member, and the first grinding surface is set on the first grinding block.

[0010] In one embodiment, the clamping and grinding assembly includes a second telescopic member, one end of the second telescopic member is connected to the first clamping arm, the other end of the second telescopic member is connected to the second clamping arm, and the telescopic second telescopic member can adjust the distance between the first clamping arm and the second clamping arm; the first clamping arm is connected to the second grinding block, the second clamping arm is connected to the third grinding block, and the second grinding surface of the second grinding block is arranged opposite to the third grinding surface of the third grinding block for clamping on opposite sides of the rail.

[0011] In one embodiment, the bottom of the second telescopic member is also connected to a vertically extending guide rod, and a fourth grinding block is slidably mounted on the guide rod, the bottom surface of the fourth grinding block is a fourth grinding surface, and the fourth grinding surface is higher than the top surface of the second grinding block; the first clamping arm is rotatably connected to the first connecting rod, and the end of the first connecting rod away from the first clamping arm is rotatably connected to the fourth grinding block, so that the fourth grinding block moves upward along the guide rod when the second grinding block and the third grinding block are relatively close.

[0012] In one embodiment, the second clamping arm is rotatably connected to the second connecting rod, one end of the second connecting rod away from the second clamping arm is rotatably connected to the fourth grinding block, and the second connecting rod is symmetrical to the first connecting rod relative to the axis of the guide rod.

[0013] In one embodiment, the second telescopic member is a hydraulic cylinder.

[0014] In one embodiment, two clamping and polishing assemblies are installed on the frame, and the two clamping and polishing assemblies are respectively arranged on opposite sides of the angle adjustment assembly, and the two clamping and polishing assemblies are used to clamp on opposite sides of the same track.

[0015] Compared with the prior art, the advantage of the present invention is that a clamping and grinding assembly is installed on the frame, and the clamping and grinding assembly is clamped on the opposite sides of the track, so that the two opposite vertical sides of the track can be polished at the same time, thereby improving the polishing efficiency of the track switch. In addition, an angle adjustment assembly is also installed on the frame, and a rail top grinding assembly is installed on the angle adjustment assembly, so that the top surface of the track switch can be polished through the first grinding surface at the bottom of the rail top grinding assembly, and the pitch angle of the rail top grinding assembly can be adjusted through the angle adjustment assembly, so that the inclination angle of the first grinding surface at the bottom of the rail top grinding assembly can be adjusted to achieve the polishing of the inclined top surface and the arc surface of the top of the track. This makes it possible to simultaneously achieve the polishing of the top surface and the two side surfaces of the track switch, thereby improving the polishing efficiency, and the first grinding surface can be polished on the arc surface of the top of the track by adjusting the pitch angle of the rail top grinding assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Hereinafter, the present invention will be described in more detail based on embodiments and with reference to the accompanying drawings.

[0017] Figure 1 is a schematic diagram of the three-dimensional structure of a high-efficiency grinder in an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of the main structure of a high-efficiency grinder in an embodiment of the present invention;

[0019] Figure 3 is a schematic diagram of the three-dimensional structure of the angle adjustment assembly in an embodiment of the present invention;

[0020] Figure 4 is a schematic diagram of the main structure of the angle adjustment assembly in an embodiment of the present invention;

[0021] Figure 5 is a schematic diagram of the three-dimensional structure of the angle adjustment assembly in an embodiment of the present invention;

[0022] Figure 6 is a schematic diagram of the three-dimensional structure of the angle adjustment assembly in an embodiment of the present invention;

[0023] Figure 7 is a schematic diagram of the three-dimensional structure of the angle adjustment assembly in an embodiment of the present invention;

[0024] Figure 8 is a schematic diagram of the three-dimensional structure of the first telescopic member in an embodiment of the present invention;

[0025] Fig. 9 is a schematic diagram of the three-dimensional structure of a clamping and grinding assembly in an embodiment of the present invention;

[0026] Fig.10 is a schematic diagram of the main structure of the clamping and grinding assembly in an embodiment of the present invention;

[0027] Fig.11 is a schematic diagram of an exploded structure of a clamping and grinding assembly in an embodiment of the present invention;

[0028] Fig.12 It is a schematic diagram of the rear view structure of the clamping and grinding assembly in an embodiment of the present invention.

[0029] Reference numerals:

[0030] 100, frame body; 110, tray body; 120, connecting rod;

[0031] 200, clamping and grinding assembly; 210, second telescopic member; 220, first clamping arm; 230, second clamping arm; 240, second grinding block; 241, second grinding surface; 250, third grinding block; 251, third grinding surface; 260, guide rod; 270, fourth grinding block; 271, fourth grinding surface; 280, first connecting rod; 290, second connecting rod;

[0032] 300, angle adjustment assembly; 310, first adjustment member; 311, first handle portion; 312, support portion; 320, second adjustment member; 321, second handle; 330, connecting claw;

[0033] 400, rail top grinding assembly; 410, first telescopic member; 411, annular structure; 412, columnar structure; 420, first driving member; 430, first grinding block; 431, first grinding surface. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] See also Figure 1 and Figure 2 As shown, the present invention provides a high-efficiency grinding machine for a rail turnout, which comprises:

[0036] The frame 100 , the clamping and grinding assembly 200 , the angle adjustment assembly 300 and the rail top grinding assembly 400 . The clamping and grinding assembly 200 and the angle adjustment assembly 300 are both mounted on the frame 100 , and the rail top grinding assembly 400 is mounted on the angle adjustment assembly 300 .

[0037] When in use, the clamping and grinding component 200 is clamped on both sides of the track switch, and the first grinding surface 431 at the bottom of the rail top grinding component 400 is attached to the top of the track switch. The clamping and grinding component 200 can be used to grind the vertical surfaces on both sides of the track switch through the movable frame 100, and the top surface of the track switch can be polished through the first grinding surface 431. That is, the grinding of three sides of the track switch can be completed at one time, which greatly improves the grinding efficiency of the track switch.

[0038] And because the angle adjustment component 300 can adjust the pitch angle of the rail top grinding component 400, the pitch angle of the first grinding surface 431 can be adjusted, so that the first grinding surface 431 can be used to grind the inclined top surface of the top of the track switch, and the first grinding surface 431 can also be used to grind the curved surface of the top of the track switch.

[0039] See also Figure 1 as well as Figure 3-Figure 7 As shown, in some implementations, the angle adjustment assembly 300 includes a first adjustment member 310, which is rotatably mounted on the frame 100. The rotation axis formed between the first adjustment member 310 and the frame 100 is a first axis, which extends horizontally. The first adjustment member 310 includes a first handle portion 311 and a support portion 312, and the rail top grinding assembly 400 is mounted on the support portion 312.

[0040] The first adjusting member 310 can be rotated by manually rotating the first handle portion 311, thereby adjusting the pitch angle of the rail top grinding assembly 400, so that the rail top grinding assembly 400 can grind the inclined top surface of the track switch top.

[0041] See also Figure 1 as well as Figure 2 As shown, the frame 100 includes a disc body 110 and a connecting rod 120, the disc body 110 is installed above the connecting rod 120, and the clamping and grinding assembly 200 is installed at the bottom of the connecting rod 120. A first mounting platform is provided at the bottom of the disc body 110, a first mounting hole is opened in the first mounting platform, the axis of the first mounting hole is the first axis, and the first adjusting member 310 is rotatably installed in the first mounting hole.

[0042] In some implementations, the disc 110 is fixedly connected to the connecting rod 120. In other implementations, the disc 110 is rotatably mounted on the connecting rod 120, and the rail top grinding assembly 400 can be rotated and the first axis can be adjusted by rotating the disc 110 mounted on the connecting rod 120.

[0043] See also Figure 3 As shown, in some implementations, the support portion 312 is rotatably connected to the rail top grinding assembly 400; the angle adjustment assembly 300 further includes a second adjustment member 320, which is rotatably mounted on the frame 100, and the second adjustment member 320 is rotatably connected to a connecting claw 330, and one end of the connecting claw 330 away from the second adjustment member 320 is rotatably connected to the rail top grinding assembly 400, wherein the connecting claw 330, the rail top grinding assembly 400 and the support portion 312 constitute a cross-axis universal joint structure. The second adjustment member 320 further includes a second handle 321, and the second adjustment member 320 can be rotated by manually rotating the second handle 321 to drive the connecting claw 330 to drive the rail top grinding assembly 400 to rotate.

[0044] Since the connecting claw 330, the rail top grinding assembly 400 and the supporting part 312 form a cross-axis universal joint structure, not only can the first adjusting member 310 be rotated to drive the supporting part 312 to rotate, thereby driving the rail top grinding assembly 400 to rotate, so as to adjust the angle of the first grinding surface 431, but also the connecting claw 330 can be rotated to drive the rail top grinding assembly 400 to rotate, so as to adjust the angle of the first grinding surface 431, so that the rotation direction of the first grinding surface 431 can be more varied, so that the top curved surface of the turnout can be bent for grinding.

[0045] See also Figure 3 It is shown that the first adjusting member 310 and the second adjusting member 320 both have a handle, and the angle adjustment of the first adjusting member 310 and the second adjusting member 320 can be achieved by manual rotation. It can be understood that in other implementations, a driving component such as a motor can be used to drive the first adjusting member 310 and the second adjusting member 320 to rotate, and a control device can be used to control the rotation angle of the motor to achieve automatic control of the angle adjustment of the first polishing surface 431.

[0046] In addition, compared with realizing multi-angle adjustment of the first polishing surface 431 by using two rotating mechanisms connected end to end, the size of the cross-axis universal joint structure is smaller.

[0047] See also Figures 3 to 7 As shown, in some implementations, the rotation axis formed between the second adjustment member 320 and the frame 100 is the second axis, and the second axis intersects the first axis perpendicularly at a first intersection located inside the rail top grinding assembly 400;

[0048] The rotation axis formed between the support portion 312 and the rail top grinding assembly 400 is the third axis;

[0049] The rotation axis formed between the connecting claw 330 and the second adjusting member 320 is a fourth axis;

[0050] The rotation axis formed between the connecting claw 330 and the rail top grinding assembly 400 is the fifth axis;

[0051] The third axis is perpendicular to the first axis, the fifth axis and the fourth axis are perpendicular to the second axis, and the third axis, the fourth axis and the fifth axis all extend through the first intersection.

[0052] It can be understood that the first axis, the second axis, the third axis, the fourth axis, the fifth axis and the first intersection point in the text are used to assist in explaining the rotation direction, and the relevant line structure may not be set in the actual high-efficiency grinder.

[0053] See also Figure 1 , Figure 2 as well as Figure 8 As shown, in some implementations, the rail top grinding assembly 400 includes a first telescopic member 410, a first driving member 420 and a first grinding block 430, one end of the first telescopic member 410 is connected to the angle adjustment assembly 300, and the other end of the first telescopic member 410 is connected to the first driving member 420, the first telescopic member 410 can be telescoped to adjust the height of the first driving member 420, the first grinding block 430 is installed on the first driving member 420, and the first grinding surface 431 is set on the first grinding block 430.

[0054] That is, the height of the first grinding block 430 can be adjusted by the first telescopic member 410 , so that the first grinding surface 431 of the first grinding block 430 fits with the top surface of the track switch after the rail top grinding assembly 400 is rotated.

[0055] See also Figure 2 as well as Figure 8 As shown, in some implementations, the first telescopic member 410 includes an annular structure 411 installed on the support portion 312, and a column structure 412 at the bottom of the annular structure 411, and the first driving member 420 is installed at one end of the column structure 412 away from the annular structure 411. The annular structure 411 is threadedly connected to the column structure 412, and the height adjustment of the first driving member 420 can be achieved by screwing the column structure 412. In other implementations, the first telescopic member 410 can also use a hydraulic cylinder or an electric cylinder, and the height adjustment of the first driving member 420 is achieved by telescoping the cylinder body.

[0056] In some implementations, the first driving member 420 is a motor, and the first grinding block 430 is installed on the driving shaft of the first driving member 420. By starting the first driving member 420, the first grinding block 430 can be rotated, thereby grinding the top surface of the track switch.

[0057] See also Fig. 9 and Fig.10 As shown, in some implementations, the clamping and grinding assembly 200 includes a second telescopic member 210, one end of the second telescopic member 210 is connected to a first clamping arm 220, the other end of the second telescopic member 210 is connected to a second clamping arm 230, the telescopic second telescopic member 210 can adjust the distance between the first clamping arm 220 and the second clamping arm 230, the first clamping arm 220 is connected to a first clamping block, the second clamping arm 230 is connected to a second clamping block, the second grinding surface 241 of the second grinding block 240 and the third grinding surface 251 of the third grinding block 250 are arranged opposite to each other for clamping on opposite sides of the rail.

[0058] That is to say, in the present application, the distance between the second polishing surface 241 and the third polishing surface 251 is adjusted by the extension and retraction of the second telescopic member 210. When the track switch needs to be polished, the second telescopic member 210 can be extended to increase the distance between the second polishing surface 241 and the third polishing surface 251. The width of the groove structure formed by the second polishing surface 241 and the third polishing surface 251 is increased, thereby reducing the difficulty of clamping the clamping and polishing assembly 200 on both sides of the track switch.

[0059] When the second polished surface 241 and the third polished surface 251 are located on opposite sides of the track switch, the second telescopic member 210 can be shortened so that the second polished surface 241 and the third polished surface 251 are in contact with the track switch.

[0060] That is to say, compared with the second grinding block 240 and the third grinding block 250 with unchanged spacing, in the present application, since the second telescopic member 210 is provided in the clamping and grinding assembly 200, the spacing between the second grinding block 240 and the third grinding block 250 can be conveniently adjusted, thereby reducing the difficulty of the clamping and grinding assembly 200 in clamping the track switch.

[0061] In some implementations, the bottom of the second telescopic member 210 is also connected to a vertically extending guide rod 260, and a fourth grinding block 270 is slidably mounted on the guide rod 260. The bottom surface of the fourth grinding block 270 is a fourth grinding surface 271, and the fourth grinding surface 271 is higher than the top surface of the second grinding block 240. The first clamping arm 220 is rotatably connected to the first connecting rod 280, and the end of the first connecting rod 280 away from the first clamping arm 220 is rotatably connected to the fourth grinding block 270.

[0062] When the second telescopic member 210 is extended or retracted, the first connecting rod 280 can be driven to rotate, so that the fourth grinding block 270 slidably mounted on the guide rod 260 slides vertically down along the guide rod 260, so that the fourth grinding block 270 fits against the top surface of the track switch.

[0063] See also Figures 9 to 11 As shown, in some implementations, the second clamping arm 230 is rotatably connected to the second connecting rod 290, and one end of the second connecting rod 290 away from the second clamping arm 230 is rotatably connected to the fourth grinding block 270, and the second connecting rod 290 and the first connecting rod 280 are symmetrical with respect to the axis of the guide rod 260. In other words, not only the first clamping arm 220 drives the first connecting rod 280 to realize the vertical movement of the fourth grinding block 270, but also the second clamping arm 230 drives the second connecting rod 290 to realize the upward movement of the fourth grinding block 270. Compared with the unilateral driving of the fourth grinding block 270 by the first connecting rod 280, the bilateral driving of the fourth grinding block 270 by the first connecting rod 280 and the second connecting rod 290 can make the vertical movement of the fourth grinding block 270 more stable.

[0064] See also Figures 9 to 11 As shown, in some implementations, the top of the fourth grinding block 270 is sleeved outside the guide rod 260 to achieve a sliding connection between the fourth grinding block 270 and the guide rod 260. In other implementations, a vertically extending slide groove structure may be provided in one of the guide rod 260 and the fourth grinding block 270, and a slider structure matching the slide groove structure may be provided in the other. The slider structure is installed in the slide groove structure to achieve a sliding connection between the guide rod 260 and the fourth grinding block 270.

[0065] See also Fig.11 as well as Fig.12 As shown, in some implementations, the second telescopic member 210 is a hydraulic cylinder, and the hydraulic cylinder has a strong pressing force, which can tightly hold the second grinding block 240 and the third grinding block 250 on opposite sides of the track switch. By increasing the positive pressure, the friction between the second grinding block 240 and the third grinding block 250 is increased, so that the track switch is more thoroughly polished.

[0066] See also Figure 1 as well as Figure 2 As shown, in some implementations, two clamping and grinding assemblies 200 are installed on the frame 100, and the two clamping and grinding assemblies 200 are respectively arranged on opposite sides of the angle adjustment assembly 300, and the two clamping and grinding assemblies 200 are used to clamp on opposite sides of the same track. By setting a plurality of clamping and grinding assemblies 200, one of the clamping and grinding assemblies 200 can be used to perform initial grinding on the track switch to remove foreign matter on the track switch, and then the track grinding assembly located between the two clamping and grinding assemblies 200 is used to perform fine grinding on the top surface of the track switch to grind the depressions or protrusions on the track switch flat, and finally another clamping and grinding assembly 200 is used to clean up the debris remaining on the track switch, so as to prevent the debris generated during the grinding process of the rail top grinding assembly 400 from adhering to the track switch, so that the debris is pressed on the track switch when the train is running, causing damage to the surface of the track switch again.

[0067] Among them, the two clamping and grinding components 200 can use grinding particles of different diameters. For example, the clamping and grinding component 200 located on the front side of the rail top grinding component 400 can use a lower-cost coarse-grained grinding surface. When using a high-efficiency grinder for grinding, the track switch is first coarse-ground to remove foreign matter on the surface. The clamping and grinding component 200 on the rear side of the rail top grinding component 400 uses a finer fine-grained grinding surface to reduce scratches in the process of cleaning grinding debris.

[0068] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A high-efficiency grinding machine for rail turnouts, characterized in that: It includes: Frame; A clamping and polishing assembly, the clamping and polishing assembly is mounted on the frame, the clamping and polishing assembly is used to clamp on opposite sides of the track and polish the vertical side of the track; An angle adjustment component, the angle adjustment component is installed on the frame; as well as A rail top grinding assembly is connected to the angle adjustment assembly, a first grinding surface is provided at the bottom of the rail top grinding assembly, and the angle adjustment assembly can adjust the pitch angle of the rail top grinding assembly.

2. The high-efficiency grinding machine according to claim 1, characterized in that: The angle adjustment assembly includes a first adjustment member, the first adjustment member is rotatably mounted on the frame, a rotation axis formed between the first adjustment member and the frame is a first axis, and the first axis extends horizontally; The first adjusting member includes a first handle portion and a supporting portion, and the rail top grinding assembly is installed on the supporting portion.

3. The high-efficiency grinding machine according to claim 2, characterized in that: The support portion is rotatably connected to the rail top grinding assembly; The angle adjustment assembly further comprises a second adjustment member, which is rotatably mounted on the frame, and the second adjustment member is rotatably connected to a connecting claw, and one end of the connecting claw away from the second adjustment member is rotatably connected to the rail top grinding assembly; Wherein, the connecting claw, the rail top grinding assembly and the supporting part constitute a cross-axis universal joint structure.

4. The high-efficiency grinding machine according to claim 3, characterized in that: The rotation axis formed between the second adjusting member and the frame is a second axis, and the second axis intersects the first axis perpendicularly at a first intersection located inside the rail top grinding assembly; The rotation axis formed between the support portion and the rail top grinding assembly is a third axis; The rotation axis formed between the connecting claw and the second adjusting member is a fourth axis; The rotation axis formed between the connecting claw and the rail top grinding assembly is the fifth axis; The third axis is perpendicular to the first axis, the fifth axis and the fourth axis are perpendicular to the second axis, and the third axis, the fourth axis and the fifth axis all extend through the first intersection.

5. The high-efficiency grinding machine according to any one of claims 1 to 4, characterized in that: The rail top grinding assembly includes a first telescopic member, a first driving member and a first grinding block, one end of the first telescopic member is connected to the angle adjustment assembly, the other end of the first telescopic member is connected to the first driving member, the first telescopic member can be extended and retracted to adjust the height of the first driving member, the first grinding block is installed on the first driving member, and the first grinding surface is set on the first grinding block.

6. The high-efficiency grinding machine according to any one of claims 1 to 4, characterized in that: The clamping and polishing assembly comprises a second telescopic member, one end of the second telescopic member is connected to the first clamping arm, the other end of the second telescopic member is connected to the second clamping arm, and telescoping the second telescopic member can adjust the distance between the first clamping arm and the second clamping arm; The first clamping arm is connected to a second grinding block, the second clamping arm is connected to a third grinding block, and the second grinding surface of the second grinding block is arranged opposite to the third grinding surface of the third grinding block so as to be clamped on opposite sides of the rail.

7. The high-efficiency grinding machine according to claim 6, characterized in that: The bottom of the second telescopic member is also connected to a vertically extending guide rod, on which a fourth grinding block is slidably mounted, the bottom surface of the fourth grinding block is a fourth grinding surface, and the fourth grinding surface is higher than the top surface of the second grinding block; The first clamping arm is rotatably connected to a first connecting rod, and one end of the first connecting rod away from the first clamping arm is rotatably connected to the fourth grinding block, so that the fourth grinding block moves upward along the guide rod when the second grinding block and the third grinding block are relatively close to each other.

8. The high-efficiency grinding machine according to claim 7, characterized in that: The second clamping arm is rotatably connected to a second connecting rod, one end of the second connecting rod away from the second clamping arm is rotatably connected to the fourth grinding block, and the second connecting rod and the first connecting rod are symmetrical with respect to the axis of the guide rod.

9. The high-efficiency grinding machine according to claim 6, characterized in that: The second telescopic member is a hydraulic cylinder.

10. The high-efficiency grinding machine according to any one of claims 1 to 4, characterized in that: Two clamping and polishing assemblies are installed on the frame, and the two clamping and polishing assemblies are respectively arranged on opposite sides of the angle adjustment assembly, and the two clamping and polishing assemblies are used to clamp on opposite sides of the same track.

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