Concrete block polishing device

Abstract

The invention discloses a concrete block polishing device, and relates to the technical field of polishing. A grinding disc assembly; the clamping base assembly, the grinding disc assembly and the clamping base assembly are sequentially arranged in the box body from top to bottom. The grinding disc assembly comprises a pushing air cylinder arranged at the top of the box body, a piston rod of the pushing air cylinder is connected with a buffering pressing plate through a connecting piece, a plurality of grinding motors are arranged on the buffering pressing plate, and grinding discs are arranged on output shafts of the grinding motors; the clamping base assembly comprises a sliding groove horizontally formed in the inner wall of the box body, a middle plate is arranged in the sliding groove in a sliding mode, and a clamping base is arranged on the middle plate. The device has the advantages that the grinding diversity and applicability are improved, and the like.

Description

Technical Field

[0001] The invention relates to the technical field of grinding, and in particular to a concrete block grinding device. Background Art

[0002] Concrete block is one of the commonly used building materials in the construction field. It can be used in various aspects of buildings, such as walls, supporting columns, foundations, basements, ceilings, etc. During the preparation process of concrete blocks, due to the influence of factors such as molds, pouring, and maintenance, there will be defects such as unevenness and cracks on the surface of concrete blocks. In order to improve the surface flatness of concrete blocks, eliminate the defects on the surface of concrete blocks, reduce errors in tests, and improve test accuracy, it is necessary to grind the surface of concrete blocks. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, the technical problem to be solved by the present invention is to provide a concrete block grinding device with improved grinding diversity and applicability.

[0004] In order to solve the above technical problems, the present invention provides a concrete block grinding device, comprising: Box; Grinding disc assembly; The clamping seat assembly, the grinding disc assembly and the clamping seat assembly are sequentially arranged in the box from top to bottom; The grinding disc assembly includes a push cylinder arranged on the top of the box body, a piston rod of the push cylinder is connected to a buffer pressure plate through a connecting piece, a plurality of grinding motors are arranged on the buffer pressure plate, and a grinding disc is arranged on the output shaft of the grinding motor; The clamping seat assembly comprises a sliding groove horizontally arranged on the inner wall of the box body, an intermediate plate is slidably arranged in the sliding groove, and the clamping seat is arranged on the intermediate plate.

[0005] Preferably, the side wall of the box body close to the slide groove is open, and a box door is hinged in the opening of the box body side wall, which is convenient for closing the box door after the concrete block is placed, thereby preventing debris generated during grinding from splashing to the outside of the box body.

[0006] Preferably, the connecting member comprises: A polygonal rod, the polygonal rod movably penetrates the piston rod of the push cylinder; A connecting plate, wherein two connecting plates are provided, and the two connecting plates are arranged in parallel and spaced apart on the buffer pressure plate, the polygonal rod is located between the two connecting plates, and the two ends of the polygonal rod in the length direction are movable and penetrate the two connecting plates respectively; Locking bolts, two locking bolts are provided, and the two locking bolts are respectively threadedly connected to the end faces of the polygonal rod in the length direction, and the outer diameter of the locking bolt head is larger than the diameter of the polygonal rod. According to the needs of the grinding position, the grinding disc can be installed on or removed from the output shaft of the grinding motor through the locking bolts.

[0007] Preferably, the buffer pressure plate comprises: An upper pressure plate is provided with a slot, an intermediate shaft is movably provided in the slot, a piston rod of the push cylinder is coaxially connected with the intermediate shaft, a polygonal rod movably penetrates the intermediate shaft, an adjustment shaft is movably penetrated at one end of the intermediate shaft away from the push cylinder, and two connecting plates are fixedly provided on both sides of the slot; The lower pressing plate is arranged parallel to the upper pressing plate and spaced apart, the end of the adjusting shaft away from the intermediate shaft is connected to the lower pressing plate, and the grinding motor is embedded in the lower pressing plate; Buffer spring, multiple buffer springs are provided, and multiple buffer springs are arranged between the upper pressure plate and the lower pressure plate, and the expansion and contraction direction of the buffer spring is the same as the expansion and contraction direction of the pushing cylinder. When the pushing cylinder pushes the grinding disc to contact the concrete block, the buffer spring can be compressed to play a buffering role, thereby preventing excessive pressure when the grinding disc contacts the concrete block, affecting the grinding effect.

[0008] Preferably, a turning frame is further provided at one end of the box body away from the box door, and the turning frame comprises: A frame seat, which is arranged on the bottom surface of the box body; An adjustment seat, the adjustment seat is rotatably connected to the top surface of the frame seat through a rotation shaft; An adjusting cylinder is hinged to an end of the top surface of the frame away from the adjusting seat, and a piston rod of the adjusting cylinder is hinged to an end of the adjusting seat away from the rotating shaft; The horizontal grinding disc rack is arranged on the top surface of the adjustment seat. The buffer pressure plate and the grinding disc can be installed on the turning frame. The adjustment seat is driven by the adjustment cylinder to adjust the position, which can meet the grinding needs of various positions of the concrete block.

[0009] Preferably, the horizontal grinding disc rack comprises: A support column, which is arranged on the top surface of the adjustment seat, and the size and shape of the support column are adapted to the size and shape of the slot; Axle seat, the axle seat is arranged on the support column; The arc-shaped shaft groove is arranged at one end of the shaft seat away from the supporting column. The opening diameter of the arc-shaped shaft groove is matched with the diameter of the intermediate shaft. The buffer pressure plate can be installed on the supporting column and the arc-shaped shaft groove to meet the grinding needs of various positions of the concrete block.

[0010] Preferably, the clamping seat comprises: U-shaped left frame plate; A U-shaped right frame plate, a U-shaped left frame plate and a U-shaped right frame plate are arranged in parallel and spaced apart on the middle plate, and the U-shaped openings of the U-shaped left frame plate and the U-shaped right frame plate are opposite to each other; A clamping cylinder, two of which are respectively arranged in the U-shaped openings of the U-shaped left frame plate and the U-shaped right frame plate; The clamping plates are provided with two clamping plates, and the two clamping plates are respectively arranged on the piston rods of the two clamping cylinders, so as to facilitate clamping the concrete block through the two clamping plates.

[0011] Preferably, both ends of the U-shaped opening of the U-shaped left frame plate and both ends of the U-shaped opening of the U-shaped right frame plate are provided with arc-shaped inclined surfaces, and an arc-shaped notch is provided on the end surface of the clamping plate away from the clamping cylinder. The arc-shaped inclined surface and the arc-shaped notch are concentric, which facilitates the placement and clamping of concrete blocks with circular structures.

[0012] The beneficial effects of the present invention are: 1. The present invention facilitates the effect of grinding the top surface and the side surface of the concrete block separately according to the grinding needs, improves the applicability and the diversity of grinding, that is, the top surface of the concrete block can be ground under the action of the pushing cylinder; the buffer pressure plate and the grinding disc are installed on the turning frame to complete the side grinding of the concrete block.

[0013] 2. According to the different angles between the plane where the side of the concrete block is located and the horizontal plane, the adjusting cylinder can be used to drive the adjusting seat with the rotating shaft as the axis, and the angle between the adjusting seat and the horizontal plane can be adjusted on the adjusting seat, so that the grinding disc can better contact with the side of the concrete block, so as to meet the grinding needs of various positions of the concrete block.

[0014] 3. According to the different angles between the plane where the side of the concrete block is located and the horizontal plane, the adjusting cylinder can be used to drive the adjusting seat with the rotating shaft as the axis, and the angle between the adjusting seat and the horizontal plane can be adjusted on the adjusting seat, so that the grinding disc can better contact with the side of the concrete block, so as to meet the grinding needs of various positions of the concrete block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the internal structure of a concrete block grinding device provided by an embodiment of the present invention.

[0017] Figure 2A schematic diagram of the position of an adjustment shaft of a concrete block grinding device provided in an embodiment of the present invention.

[0018] Figure 3 A schematic diagram of the connection structure between a connector and a buffer plate of a concrete block grinding device provided in an embodiment of the present invention.

[0019] Figure 4 A schematic diagram of the position of a grinding motor of a concrete block grinding device provided in an embodiment of the present invention.

[0020] Figure 5 A schematic diagram of the structure of a clamping seat of a concrete block grinding device provided in an embodiment of the present invention.

[0021] Figure 6 A schematic diagram of the structure of a turning frame of a concrete block grinding device provided in an embodiment of the present invention.

[0022] Explanation of reference numerals: 1. box body; 11. box door; 2. grinding disc assembly; 21. push cylinder; 22. connecting piece; 221. polygonal rod; 222. connecting plate; 223. locking bolt; 23. buffer pressure plate; 231. upper pressure plate; 2311. slot; 2312. intermediate shaft; 2313. adjusting shaft; 232. lower pressure plate; 233. buffer spring; 24. grinding motor; 25. grinding disc; 3. clamping seat Components; 31. Slide; 32. Middle plate; 33. Clamping seat; 331. U-shaped left frame plate; 332. U-shaped right frame plate; 333. Clamping cylinder; 334. Clamping plate; 335. Arc-shaped inclined surface; 336. Arc-shaped notch; 4. Turning frame; 41. Frame seat; 42. Adjusting seat; 421. Rotating shaft; 43. Adjusting cylinder; 44. Horizontal grinding disc frame; 441. Support column; 442. Axle seat; 443. Arc-shaped axle groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Embodiment 1 like Figures 1 to 4As shown, the present invention provides a concrete block grinding device, including a box body 1; a grinding disc assembly 2 and a clamping seat assembly 3 are arranged in the box body 1 from top to bottom in sequence; the grinding disc assembly 2 includes a pushing cylinder 21 arranged at the top of the box body 1, and a buffer pressure plate 23 is connected to the piston rod of the pushing cylinder 21 through a connecting piece 22, and a plurality of grinding motors 24 are arranged on the buffer pressure plate 23, and a grinding disc 25 is arranged on the output shaft of the grinding motor 24; the clamping seat assembly 3 includes a slide groove 31 horizontally arranged on the inner wall of the box body 1, an intermediate plate 32 is slidably arranged in the slide groove 31, and a clamping seat 33 is arranged on the intermediate plate 32.

[0025] Before grinding, place the concrete block on the middle plate 32, clamp the concrete block with the clamping seat 33, then slide the middle plate 32 in the slide groove 31 to the position corresponding to the grinding disc 25, push the cylinder 21 to push the buffer pressure plate 23 and the grinding motor 24 toward the concrete block until the grinding disc 25 contacts the top surface of the concrete block; start the grinding motor 24 to drive the grinding disc 25 to rotate, so that the top surface of the concrete block can be ground.

[0026] The side wall of the box body 1 near the slide groove 31 is open, and a box door 11 is hinged in the opening of the side wall of the box body 1, which is convenient for closing the box door 11 after the concrete block is placed, and can prevent the debris generated during grinding from splashing to the outside of the box body 1.

[0027] A push cylinder (the extension direction of the piston rod of the push cylinder is the same as the length direction of the slide groove 31) may also be provided in the slide groove 31 to facilitate the movement of the middle plate 32 along the slide groove 31, which is beneficial to improving the efficiency of grinding the concrete block.

[0028] The grinding motors 24 on the buffer plate 23 may be arranged in two parallel rows, and the two rows of grinding motors 24 may be arranged in a staggered manner, so that the grinding discs 25 may be arranged in a staggered manner, which is beneficial to increase the grinding area.

[0029] Embodiment 2 Based on the first embodiment, Figures 1 to 4 , Figure 6As shown, the connecting member 22 includes a polygonal rod 221, which movably penetrates the piston rod of the push cylinder 21; there are two connecting plates 222, which are arranged in parallel and spaced on the buffer pressure plate 23, the polygonal rod 221 is located between the two connecting plates 222, and the two ends of the polygonal rod 221 in the length direction movably penetrate the two connecting plates 222; there are two locking bolts 223, which are respectively threadedly connected to the end faces of the two ends of the polygonal rod 221 in the length direction, and the outer diameter of the head of the locking bolt 223 is greater than the diameter of the polygonal rod 221; the buffer pressure plate 23 includes an upper pressure plate 231, and a slot 2311 is arranged on the upper pressure plate 231, and a middle The intermediate shaft 2312, the piston rod of the pushing cylinder 21 is coaxially connected with the intermediate shaft 2312, the polygonal rod 221 movably passes through the intermediate shaft 2312, and the end of the intermediate shaft 2312 away from the pushing cylinder 21 is movably passed through and provided with an adjusting shaft 2313, and two connecting plates 222 are respectively fixedly arranged on both sides of the slot 2311; the lower pressure plate 232 is arranged parallel to the upper pressure plate 231 and spaced apart, and the end of the adjusting shaft 2313 away from the intermediate shaft 2312 is connected to the lower pressure plate 232, and the grinding motor 24 is embedded in the lower pressure plate 232; a plurality of buffer springs 233 are arranged, and a plurality of buffer springs 233 are arranged between the upper pressure plate 231 and the lower pressure plate 232, and the extension and contraction direction of the buffer spring 233 is the same as the extension and contraction direction of the pushing cylinder 21.

[0030] When it is necessary to grind the top surface of the concrete block, first sleeve the intermediate shaft 2312 on the outside of the end of the adjusting shaft 2313 away from the lower pressing plate 232; pass the polygonal rod 221 through the intermediate shaft 2312 (and make the two ends of the polygonal rod 221 in the length direction movably pass through the two connecting plates 222), and then thread the two locking bolts 223 on the end surfaces of the two ends of the polygonal rod 221 in the length direction, so that the push cylinder 21 and the buffer pressing plate 23 can be connected; start the push cylinder 21 to push the buffer pressing plate 23 to move, that is, The top surface of the concrete block can be grinded by the grinding disc 25; when the pushing cylinder 21 pushes the grinding disc 25 to contact the concrete block placed on the clamping seat assembly 3, the compression buffer spring 233 can play a buffering role (that is, when the grinding disc 25 conflicts with the concrete block, the compression buffer spring 233 can be compressed, and at the same time, the lower pressure plate 232 moves toward the direction close to the upper pressure plate 231; at the same time, the adjustment shaft 2313 is movably inserted into the intermediate shaft 2312), which can prevent the grinding disc 25 from having excessive pressure when contacting the concrete block, thereby affecting the grinding effect.

[0031] A flip frame 4 is also provided at the end of the box body 1 away from the box door 11, and the flip frame 4 includes a frame seat 41, which is arranged on the bottom surface of the box body 1; the adjusting seat 42 is rotatably connected to the top surface of the frame seat 41 through a rotating shaft 421; the adjusting cylinder 43 is hinged at the end of the top surface of the frame seat 41 away from the adjusting seat 42, and the piston rod of the adjusting cylinder 43 is hinged to the end of the adjusting seat 42 away from the rotating shaft 421; the horizontal grinding disc frame 44 is arranged on the top surface of the adjusting seat 42; the horizontal grinding disc frame 44 includes a support column 441, which is arranged on the top surface of the adjusting seat 42, and the size and shape of the support column 441 are adapted to the size and shape of the slot 2311; the shaft seat 442 is arranged on the support column 441; the arc shaft groove 443 is arranged at the end of the shaft seat 442 away from the support column 441, and the opening diameter of the arc shaft groove 443 is adapted to the diameter of the intermediate shaft 2312.

[0032] When it is necessary to grind the side wall of the concrete block (the side wall of the concrete block close to the turning frame 4), first remove the locking bolt 223 and remove the polygonal rod 221, so that the buffer pressure plate 23 and the pushing cylinder 21 can be separated; install the buffer pressure plate 23 and the grinding disc 25 on the turning frame 4, that is, the support column 441 can be inserted into the slot 2311, and the intermediate shaft 2312 can be inserted into the opening of the arc shaft groove 443 (a screw rod assembly can be provided on the top of the box body 1, and the pushing cylinder 21 is connected to the screw rod assembly, which is convenient for adjusting the position of the pushing cylinder 21 in the horizontal direction, that is, the pushing cylinder 21 can be moved from the upper position of the turning frame 4 to the upper position of the clamping seat assembly 3, which is convenient for installing the buffer pressure plate 23 and the grinding disc 25 on the turning frame 4 After the concrete block is mounted on the turning frame 4, the piston rod of the pushing cylinder 21 can be brought into contact with the buffer pressure plate 23, thereby improving the stability of the buffer pressure plate 23 and the grinding disc 25 installed on the turning frame 4); after the concrete block is clamped and fixed on the middle plate 32, and the side wall of the concrete block to be polished is facing the turning frame 4, the middle plate 32 can be slid in the slide groove 31 to complete the grinding of the side wall of the concrete block (the grinding surface formed by each grinding disc 25 is larger than the side wall of the concrete block to be polished, which is convenient for grinding the side wall of the concrete block to be in place; the two clamping cylinders 333 can also respectively drive the two clamping plates 334 to telescope and push to different positions, so as to adjust the position of the concrete block on the middle plate 32, thereby facilitating the grinding disc 25 to better complete the grinding operation).

[0033] According to the different angles between the plane where the side of the concrete block is located and the horizontal plane, the adjusting cylinder 43 can be used to drive the adjusting seat 42 to rotate and adjust the angle between the adjusting seat 42 and the horizontal plane around the rotating shaft 421, so that the grinding disc 25 can better contact with the side of the concrete block, so as to meet the grinding needs of various positions of the concrete block.

[0034] Embodiment 3 Based on the first embodiment, Figure 1 and Figure 5 As shown, the clamping seat 33 includes a U-shaped left frame plate 331; the U-shaped left frame plate 331 and the U-shaped right frame plate 332 are arranged in parallel and spaced apart on the middle plate 32, and the U-shaped openings of the U-shaped left frame plate 331 and the U-shaped right frame plate 332 are opposite; two clamping cylinders 333 are provided, and the two clamping cylinders 333 are respectively arranged in the U-shaped openings of the U-shaped left frame plate 331 and the U-shaped right frame plate 332; two clamping plates 334 are provided, and the two clamping plates 334 are respectively arranged on the piston rods of the two clamping cylinders 333.

[0035] Before grinding, the concrete block is placed on the middle plate 32 between the two clamping plates 334 (the thickness of the concrete block is greater than the thickness of the U-shaped left frame plate 331, and the thickness of the concrete block is greater than the thickness of the clamping plate 334); according to the size of the concrete block, the clamping cylinder 333 is started to push the clamping plate 334 to move towards the concrete block until the concrete block is clamped and fixed; both ends of the U-shaped opening of the U-shaped left frame plate 331 and the U-shaped right frame plate 332 are provided with arc-shaped inclined surfaces 335, and the ends of the clamping plates 334 away from the clamping cylinders 333 are An arc-shaped notch 336 is provided on the surface, and the arc-shaped inclined surface 335 and the arc-shaped notch 336 are concentric; when the concrete block is a circular structure, the arc-shaped notch 336 on the clamping plate 334 can conflict with the outer circumferential wall of the concrete block, which is beneficial to increase the contact area between the concrete block and the concrete block, thereby improving the clamping and fixing effect of the concrete block; at the same time, the arc-shaped inclined surface 335 is provided, which is convenient for placing the circular concrete block and can prevent the outer circumferential wall of the concrete block from interfering with the two ends of the U-shaped opening of the U-shaped left frame plate 331 and the two ends of the U-shaped opening of the U-shaped right frame plate 332.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A concrete block grinding device, characterized in that: include: Box (1); A grinding disc assembly (2); The clamping seat assembly (3), the grinding disc assembly (2) and the clamping seat assembly (3) are arranged in sequence from top to bottom in the box body (1); The grinding disc assembly (2) comprises a pushing cylinder (21) arranged on the top of the box body (1); a buffer pressure plate (23) is connected to the piston rod of the pushing cylinder (21) via a connecting piece (22); a plurality of grinding motors (24) are arranged on the buffer pressure plate (23); and a grinding disc (25) is arranged on the output shaft of the grinding motor (24); The clamping seat assembly (3) comprises a slide groove (31) horizontally arranged on the inner wall of the box body (1), an intermediate plate (32) is slidably arranged in the slide groove (31), and a clamping seat (33) is arranged on the intermediate plate (32).

2. A concrete block grinding device as claimed in claim 1, characterized in that: The side wall of the box body (1) close to the slide groove (31) is open, and a box door (11) is hinged in the opening of the side wall of the box body (1).

3. A concrete block grinding device as claimed in claim 1, characterized in that: The connecting piece (22) comprises: A polygonal rod (221), the polygonal rod (221) movably penetrates the piston rod of the push cylinder (21); A connecting plate (222), wherein two connecting plates (222) are provided, and the two connecting plates (222) are arranged in parallel and spaced apart on the buffer pressure plate (23); the polygonal rod (221) is located between the two connecting plates (222), and both ends of the polygonal rod (221) in the length direction are respectively movable and penetrate the two connecting plates (222); A locking bolt (223), two locking bolts (223) are provided, and the two locking bolts (223) are respectively threadedly connected to the end surfaces at both ends of the polygonal rod (221) in the length direction, and the outer diameter of the head of the locking bolt (223) is greater than the diameter of the polygonal rod (221).

4. A concrete block grinding device as claimed in claim 3, characterized in that: The buffer pressure plate (23) comprises: An upper pressing plate (231), the upper pressing plate (231) is provided with a slot (2311), an intermediate shaft (2312) is movably provided in the slot (2311), a piston rod of the pushing cylinder (21) is coaxially connected to the intermediate shaft (2312), a polygonal rod (221) movably penetrates the intermediate shaft (2312), an adjustment shaft (2313) is movably penetrated at one end of the intermediate shaft (2312) away from the pushing cylinder (21), and two connecting plates (222) are respectively fixedly provided on both sides of the slot (2311); A lower pressing plate (232), the lower pressing plate (232) and the upper pressing plate (231) are arranged in parallel and at intervals, one end of the adjusting shaft (2313) away from the intermediate shaft (2312) is connected to the lower pressing plate (232), and the grinding motor (24) is embedded in the lower pressing plate (232); A buffer spring (233), wherein a plurality of buffer springs (233) are provided, wherein the plurality of buffer springs (233) are provided between the upper pressing plate (231) and the lower pressing plate (232), and the expansion and contraction direction of the buffer spring (233) is the same as the expansion and contraction direction of the pushing cylinder (21).

5. A concrete block grinding device as claimed in claim 4, characterized in that: A turning frame (4) is also provided at one end of the box body (1) away from the box door (11), and the turning frame (4) comprises: A frame (41), the frame (41) being arranged on the bottom surface of the box body (1); An adjustment seat (42), the adjustment seat (42) being rotatably connected to the top surface of the frame seat (41) via a rotation shaft (421); An adjusting cylinder (43), the adjusting cylinder (43) being hinged to one end of the top surface of the frame seat (41) away from the adjusting seat (42), and a piston rod of the adjusting cylinder (43) being hinged to one end of the adjusting seat (42) away from the rotating shaft (421); A horizontal grinding disc frame (44) is arranged on the top surface of the adjustment seat (42).

6. A concrete block grinding device as claimed in claim 5, characterized in that: The horizontal grinding disc frame (44) comprises: A support column (441), the support column (441) is arranged on the top surface of the adjustment seat (42), and the size and shape of the support column (441) are adapted to the size and shape of the slot (2311); A shaft seat (442), the shaft seat (442) is arranged on the support column (441); An arc-shaped shaft groove (443) is arranged at one end of the shaft seat (442) away from the support column (441), and an opening diameter of the arc-shaped shaft groove (443) is matched with a diameter of the intermediate shaft (2312).

7. A concrete block grinding device as claimed in claim 1, characterized in that: The clamping seat (33) comprises: U-shaped left frame plate (331); The U-shaped right frame plate (332), the U-shaped left frame plate (331) and the U-shaped right frame plate (332) are arranged in parallel and spaced apart on the middle plate (32), and the U-shaped openings of the U-shaped left frame plate (331) and the U-shaped right frame plate (332) are opposite to each other; A clamping cylinder (333), wherein two clamping cylinders (333) are provided, and the two clamping cylinders (333) are respectively arranged in the U-shaped openings of the U-shaped left frame plate (331) and the U-shaped right frame plate (332); A clamping plate (334), wherein two clamping plates (334) are provided, and the two clamping plates (334) are respectively provided on the piston rods of the two clamping cylinders (333).

8. A concrete block grinding device as claimed in claim 7, characterized in that: Both ends of the U-shaped opening of the U-shaped left frame plate (331) and both ends of the U-shaped opening of the U-shaped right frame plate (332) are provided with arc-shaped inclined surfaces (335), and an arc-shaped notch (336) is provided on the end surface of the clamping plate (334) away from the clamping cylinder (333), and the arc-shaped inclined surface (335) and the arc-shaped notch (336) are cocentric.

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