Concrete surface polishing device

Abstract

The invention relates to the technical field of concrete treatment, and particularly discloses a concrete surface grinding device which comprises a workbench, a first clamping piece, a second clamping piece, a grinding piece and an adjusting piece are arranged on the workbench, the adjusting piece and the grinding piece are connected to drive the grinding piece to move in the vertical direction, and the grinding piece comprises a mounting frame, a first grinding plate and a second grinding plate. The first grinding plate and the second grinding plate are rotationally arranged on the mounting frame, a first rotating piece is arranged at the rotating position of the first grinding plate and the second grinding plate and used for driving the first grinding plate and the second grinding plate to rotate to the horizontal state, when the first grinding plate is in the horizontal state, the first clamping piece clamps the lower end of a workpiece, and the first grinding plate grinds the upper end of the workpiece. When the second grinding plate is in a horizontal state, the second clamping piece clamps the upper end of the workpiece, the second grinding plate grinds the lower end of the workpiece, and when the first grinding plate and the second grinding plate are in a vertical state, the side face of the workpiece is ground; the concrete surface grinding device has the effect of improving the grinding efficiency.

Description

Technical Field

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

[0002] Concrete test blocks are important tools for measuring concrete properties. During preparation, they may have defects such as unevenness and roughness. Grinding can eliminate these defects, ensure a smooth surface, and improve test accuracy. In addition, dust, oil and other impurities may adhere to the surface of the concrete test block. Grinding can remove these impurities, ensure the cleanliness of the test block surface, and avoid interference with the test results. The surface of the test block after grinding is smoother and flatter, which is conducive to close contact between the testing machine and the test block, reducing errors, and at the same time making the test stress evenly distributed, further improving the test accuracy.

[0003] The patent document with the announcement number CN107855876B discloses a concrete block uniform grinding device, including a box body, the top and bottom of the left side of the box body cavity are fixedly connected to the squeezing device, the right side of the box body is fixedly connected to the first motor through the motor base, the two sides of the box body top are fixedly connected to the fixing plate, the two fixing plates are rotatably connected with a screw rod, and the right end of the screw rod passes through the fixing plate and extends to the outside of one side of the fixing plate, the output shaft of the first motor is fixedly connected to the screw rod through a coupling, and the surface of the screw rod is threadedly connected to the screw rod sleeve. A grinding device is arranged on the fixing plate, the squeezing device clamps and fixes the concrete block, and then the motor and the screw adjust the position of the grinding device, and the concrete block is polished by the grinding device.

[0004] However, the scheme still has the following problems: the extrusion device cooperates with the end clamp of the concrete block to fix the concrete block, so the clamped end of the concrete block cannot be polished. If the end needs to be polished, the position of the concrete block needs to be adjusted, and the adjustment process is relatively cumbersome, which makes it inconvenient to fully polish the concrete block, affecting the polishing efficiency. Summary of the invention

[0005] The invention provides a concrete surface grinding device, aiming to solve the problem of low efficiency in fully grinding a concrete test block in the related art.

[0006] The concrete surface grinding device of the present invention comprises a workbench, on which are arranged a clamping piece 1, a clamping piece 2, a grinding piece and an adjusting piece, the clamping piece 1 and the clamping piece 2 alternately clamp two ends of a workpiece, the adjusting piece and the grinding piece are connected to drive the grinding piece to move in a vertical direction, the grinding piece comprises a mounting frame, a grinding plate 1 and a grinding plate 2, the grinding plates 1 and 2 are rotatably arranged on the mounting frame, a rotating piece 1 is arranged at the rotating position of the grinding plates 1 and 2, the rotating piece 1 is used to drive the grinding plates 1 and 2 to rotate to a horizontal state, when the grinding plate 1 is in a horizontal state, the clamping piece 1 clamps the lower end of the workpiece, and the grinding plate 1 grinds the upper end of the workpiece, when the grinding plate 2 is in a horizontal state, the clamping piece 2 clamps the upper end of the workpiece, and the grinding plate 2 grinds the lower end of the workpiece, and when the grinding plate 1 and the grinding plate 2 are in a vertical state, they grind the side surfaces of the workpiece.

[0007] The effect is that grinding plate one rotates to grind the top of the workpiece, and at this time clamp one clamps the bottom of the workpiece. After grinding the top of the workpiece, grinding plate one and grinding plate two move to the side of the workpiece to grind the side of the workpiece. When grinding plate two moves to the bottom close to the workpiece, clamp two clamps the workpiece, clamp one releases the workpiece, and grinding plate two rotates to a horizontal state to grind the bottom of the workpiece, thereby realizing rapid grinding of the upper and lower ends and the sides of the workpiece, thereby improving the grinding efficiency of the workpiece.

[0008] Preferably, clamp one includes a mounting rod and a clamp one, the mounting rod is arranged on the workbench, and two groups of clamps are provided. The two groups of clamps are symmetrically arranged around the workpiece, and the inner side of clamp one abuts against the bottom end of the workpiece to clamp and fix the workpiece. When clamp one clamps the workpiece, the upper end of the workpiece is spaced apart from clamp two.

[0009] The effect is that the inner sides of the two clamping plates 1 abut against the workpiece to clamp the bottom of the workpiece. At this time, the bottom of the workpiece is spaced apart from the clamping plate 2 so that the grinding plate 1 can grind the top of the workpiece.

[0010] Preferably, the second clamp includes a second clamp plate, a sliding rod and an elastic member, the sliding rod slides horizontally on the workbench in a direction toward the workpiece, the second clamp plate is arranged at one end of the sliding rod close to the workpiece, the elastic member is respectively connected to the sliding rod and the workbench, the elastic member is used to drive the second clamp plate to move toward the workpiece, and the second clamp plate has two groups symmetrically arranged around the workpiece, and the two groups of second clamp plates clamp the workpiece to fix it.

[0011] The effect is that the first elastic member drives the slide bar to move, and the movement of the slide bar drives the second clamping plate to move, so that the inner side of the second clamping plate abuts against the workpiece, thereby clamping the top of the workpiece and fixing the workpiece.

[0012] Preferably, a push piece is provided on the workbench, and the output end of the push piece is connected to the mounting rod for driving the workpiece to move in the vertical direction. A guide rod is provided on the workbench, and the guide rod is arranged between two groups of clamping plates 2. The guide rod slides in the vertical direction. An inclined block is provided on the guide rod, and an extension portion is horizontally provided on the slide rod. The end of the extension portion is in sliding contact with the inclined block. When the guide rod moves upward, the inclined block drives the extension portion to slide in a direction away from the guide rod. When the extension portion is separated from the inclined block, the spring 1 drives the clamping plate 2 to clamp the workpiece.

[0013] The effect is that the push piece drives the workpiece to move until it abuts the guide rod through the mounting rod, the movement of the guide rod drives the inclined block to move, the inclined block drives the second clamping plate to move and compress the first elastic member, after the extension part is separated from the inclined block, the first elastic member drives the second clamping plate to clamp the workpiece, and then the second clamping plate clamps and fixes the workpiece after the grinding plate one grinds the top of the workpiece.

[0014] Preferably, a control rod is provided inside the mounting rod to slide in the vertical direction, the control rod is provided between two groups of clamping plates one, and when clamping plate one clamps the workpiece, the end of the control rod abuts against the workpiece, and the control rod is provided with an elastic member two connected to the mounting rod, and the elastic member two is used to drive the control rod to slide in the direction toward the workpiece, a clamping rod is provided on clamping plate one, and a clamping plate is provided on the control rod, and a rotating member two is provided at the rotating axis of clamping plate one, and the rotating member two is used to drive clamping plate one to rotate in a direction away from the workpiece, when the clamping rod abuts against the inner side of the clamping plate, clamping plate one clamps the workpiece, when the clamping plate is separated from the clamping rod, the rotating member one drives clamping plate one to separate from the workpiece, and when clamping plate one is separated from the workpiece, clamping plate two clamps the workpiece.

[0015] The effect is that after the second clamping plate clamps the workpiece, the mounting rod continues to move, the control rod moves relative to the mounting rod, the control rod drives the clamping plate to move, and after the clamping plate moves and separates from the clamping rod, the first clamping plate rotates to separate from the workpiece under the action of the second rotating part, so that the bottom of the workpiece can be polished when the second grinding plate moves to the bottom of the workpiece.

[0016] Preferably, the first clamping plate comprises an inclined portion, the inclined portion is inclined in a direction toward the control rod, the inclined portion is rotatably arranged on the mounting rod, and the clamping rod is arranged on the inclined portion.

[0017] The effect is that the inclined portion is provided, and after the first clamping plate is separated from the workpiece, the distance between the first clamping plate and the workpiece is increased so that the second grinding plate can grind the bottom of the workpiece.

[0018] Preferably, the mounting frame includes two connecting parts, and the two connecting parts are inclined in opposite directions in the vertical direction at one end close to the workpiece. Grinding plate 1 and grinding plate 2 are respectively connected to the two connecting parts. When grinding plate 1 and grinding plate 2 are both in a vertical state, the two are spaced apart.

[0019] The effect is to reduce the mutual interference between the first grinding plate and the second grinding plate when both are in a vertical state.

[0020] Preferably, two groups of grinding pieces are arranged around the workpiece, the length of grinding plate 1 is the same as that of grinding plate 2, the sum of the lengths of the two grinding plates 1 is greater than the diameter of the workpiece, and when grinding plate 1 is in a horizontal state, the ends of the two grinding plates 1 close to the center of the workpiece overlap.

[0021] The effect is that the grinding plate, when in a horizontal state, rotates to completely cover the end of the workpiece and fully grinds it.

[0022] Preferably, the grinding part also includes a ring gear, a gear and a driving part 1, the ring gear is rotatably arranged on the adjusting part, the workpiece and the inner wall of the ring gear are spaced apart, the mounting frame is arranged on the inner side of the ring gear, the driving part 1 is connected to the adjusting part, the gear is arranged at the output end of the driving part 1, and the gear and the ring gear are meshed.

[0023] The effect is that the driving member 1 drives the gear ring to rotate through the gear, and the gear ring drives the grinding plate 1 and the grinding plate 2 to rotate to grind the workpiece.

[0024] Preferably, the adjusting member includes an adjusting ring, a screw and a second driving member. The adjusting ring slides in a vertical direction on the workbench, the polishing member is connected to the adjusting ring, the screw is arranged in a vertical direction, the screw is threadedly connected to the adjusting ring, the second driving member is arranged on the workbench, and the output end of the second driving member is connected to the screw.

[0025] The effect is that the second driving member drives the screw to rotate, and the rotation of the screw drives the adjustment ring to move, thereby adjusting the positions of the first grinding plate and the second grinding plate.

[0026] Beneficial effects: During grinding, the present invention can grind the sides of the workpiece with grinding plate one and grinding plate two, while grinding plate one can rotate to grind the top of the workpiece and grinding plate two can rotate to grind the bottom of the workpiece. At the same time, when grinding the corresponding ends of the workpiece, the other ends of the workpiece are clamped and fixed by clamp one and clamp two respectively, so as to grind the corresponding positions, thereby improving the grinding efficiency of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention.

[0028] Figure 2 It is a structural schematic diagram of the adjusting member in the present invention.

[0029] Figure 3 It is a schematic diagram of the structure of the grinding piece in the present invention.

[0030] Figure 4 It is a partial exploded view of the transfer member 1 and the grinding plate 1 of the present invention.

[0031] Figure 5 It is a structural schematic diagram of the clamping member 1 in the present invention.

[0032] Figure 6 It is a partial exploded schematic diagram of the guide rod and the second clamp in the present invention.

[0033] Figure 7 It is a partial exploded schematic diagram of the control rod and the clamping plate 1 in the present invention.

[0034] Reference numerals: 01. Workpiece; 1. Workbench; 2. Clamp 1; 21. Mounting rod; 22. Clamp 1; 221. Clamping rod; 222. Rotating member 2; 223. Inclining portion; 3. Clamp 2; 31. Clamp 2; 32. Sliding rod; 321. Extension portion; 33. Elastic member 1; 4. Grinding member; 41. Gear ring; 42. Gear; 43. Driving member 1; 44. Mounting frame; 441. Connecting portion; 45. Grinding plate 1; 46. Grinding plate 2; 5. Adjusting member; 51. Adjusting ring; 52. Screw; 53. Driving member 2; 6. Rotating member 1; 7. Pushing member; 8. Guide rod; 81. Bevel block; 9. Control rod; 91. Elastic member 2; 92. Clamping plate. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0036] like Figures 1 to 7 As shown, the concrete surface grinding device of the present invention comprises a workbench 1, on which a clamp 1 2, a clamp 2 3, a grinding piece 4 and an adjusting piece 5 are arranged, the clamp 1 2 and the clamp 2 3 are arranged at intervals in the vertical direction, the clamp 2 3 is arranged on the side of the clamp 1 2 facing away from the ground, the clamp 1 2 clamps and fixes the lower end of the workpiece 01, and the clamp 2 3 clamps and fixes the upper end of the workpiece 01. In this embodiment, the workpiece 01 is a concrete test block, the grinding piece 4 is arranged on one side of the workpiece 01, and the adjusting piece 5 is connected to the grinding piece 4 to drive the grinding piece 4 to move in the vertical direction, and the grinding piece 4 moves to grind the workpiece 01.

[0037] Reference Figure 2 and Figure 3The grinding member 4 includes a ring gear 41, a gear 42, a driving member 1 43, a mounting frame 44, a grinding plate 1 45 and a grinding plate 2 46. The ring gear 41 is rotatably arranged on the adjusting member 5, and the ring gear 41 is sleeved on the outside of the workpiece 01. The driving member 1 43 can be set as a motor, and the driving member 1 43 is arranged on the adjusting member 5. The output end of the driving member 1 43 is connected to the gear 42, and the gear 42 and the ring gear 41 are meshed. The mounting frame 44 is arranged on the inner side of the ring gear 41, and the grinding plate 1 45 and the grinding plate 2 46 are arranged on the mounting frame 44. The driving member 1 43 drives the ring gear 41 to rotate through the gear 42, and the rotation of the ring gear 41 drives the grinding plate 1 45 and the grinding plate 2 46 to rotate around the workpiece 01 through the mounting frame 44, and the workpiece 01 is polished by the grinding plate 1 45 and the grinding plate 2 46.

[0038] Reference Figure 1 and Figure 2 The adjusting member 5 includes an adjusting ring 51, a screw 52 and a second driving member 53. The adjusting ring 51 slides in the vertical direction on the workbench 1. The gear ring 41 is rotatably arranged on the adjusting ring 51. The driving member 1 43 is arranged on the adjusting ring 51. The screw 52 is arranged along the moving direction of the adjusting ring 51. The screw 52 penetrates the adjusting ring 51 and is threadedly connected with the adjusting ring 51, that is, the screw 52 rotates to drive the adjusting ring 51 to move. The second driving member 53 can be set as a motor, and the output end of the second driving member 53 is connected to the screw 52. The second driving member 53 drives the screw 52 to rotate, and the screw 52 rotates to drive the adjusting ring 51 to move, thereby adjusting the positions of the grinding plate 1 45 and the grinding plate 2 46 to grind different positions on the workpiece 01. There are two groups of driving members 53 and screw rods 52, and the two groups of driving members 53 and screw rods 52 are symmetrically arranged around the center of the adjustment ring 51. The two groups of screw rods 52 drive the adjustment ring 51 to move at the same time, thereby improving the stability of the adjustment ring 51 when moving.

[0039] Reference Figure 3 and Figure 4, grinding plate 1 45 and grinding plate 2 46 are rotatably arranged on the mounting frame 44, and a rotating member 1 6 is arranged at the rotating position of grinding plate 1 45 and grinding plate 2 46, and rotating member 1 6 can be set as a torsion spring, and rotating member 1 6 is used to drive grinding plate 1 45 and grinding plate 2 46 to rotate to a vertical state, and grinding plate 1 45 is arranged on the side of grinding plate 2 46 away from the ground. When grinding plate 1 45 is in a horizontal state, it cooperates with the upper end of workpiece 01, at this time, clamping member 1 2 clamps the lower end of workpiece 01, grinding plate 2 46 abuts against the side of workpiece 01, and grinding plate 1 45 rotates to grind the upper end of workpiece 01. After grinding plate 1 45 finishes grinding the end of workpiece 01, the adjusting ring 51 drives grinding plate 1 45 to move downward, and grinding plate 1 45 rotates to abut against the side of workpiece 01, at this time, grinding plate 1 45 and grinding plate 2 46 both grind the side of workpiece 01. When the grinding plate 46 moves to the bottom of the workpiece 01, the clamp 1 2 releases the workpiece 01 while the clamp 2 3 clamps the workpiece 01, and the grinding plate 46 continues to move to the end of the workpiece 01, and the rotating member 1 6 drives the grinding plate 46 to abut against the lower end of the workpiece 01, and the grinding plate 46 rotates to grind the lower end of the workpiece 01. By adjusting the positions of the grinding plate 1 45 and the grinding plate 2 46, the side of the workpiece 01 and the two clamped ends can be ground, thereby improving the grinding efficiency of the workpiece 01.

[0040] Reference Figure 3 and Figure 4 The mounting frame 44 includes two connecting parts 441. One end of the connecting part 441 away from the mounting frame 44 is inclined in the vertical direction in a direction away from each other. The grinding plate 1 45 and the grinding plate 2 46 are respectively connected to the two connecting parts 441. When the grinding plate 1 45 and the grinding plate 2 46 are both in a vertical state, the grinding plate 1 45 and the grinding plate 2 46 are arranged at intervals. The mutual interference between the grinding plate 1 45 and the grinding plate 2 46 is reduced. In addition, two groups of grinding parts 4 are arranged around the workpiece 01. The length of the grinding plate 1 45 and the grinding plate 2 46 is the same. The sum of the lengths of the two grinding plates 1 45 is greater than the diameter of the workpiece 01. When the two grinding plates 1 45 are both in a horizontal state, the ends of the two grinding plates 1 45 close to the center of the workpiece 01 overlap. When the grinding plate 1 45 rotates, the plane where the two grinding plates 1 45 rotate can completely cover the end of the workpiece 01, thereby improving the grinding effect on the workpiece 01.

[0041] Reference Figure 1 and Figure 5 The clamp 2 includes a mounting rod 21 and a clamp plate 22. The mounting rod 21 is arranged on the workbench 1. There are two groups of clamp plates 22. The two groups of clamp plates 22 are symmetrically arranged around the workpiece 01. The inner side of the clamp plate 22 abuts against the side surface of the bottom end of the workpiece 01 to fix the workpiece 01. When the clamp plate 22 clamps the workpiece 01, the upper end of the workpiece 01 is spaced apart from the clamp 3 so that the grinding plate 45 can grind the upper end of the workpiece 01.

[0042] Reference Figure 1 and Figure 6 The clamp 2 3 includes a clamp plate 2 31, a slide bar 32 and an elastic member 1 33. The slide bar 32 is arranged to slide horizontally on the workbench 1 in the direction toward the workpiece 01. The clamp plate 2 31 is arranged at one end of the slide bar 32 close to the workpiece 01. The elastic member 1 33 is connected to the slide bar 32 and the workbench 1 respectively. The elastic member 1 33 can be set as a spring. The elastic member 1 33 is used to drive the clamp plate 2 31 to move in the direction toward the workpiece 01. The elastic member 1 33 drives the clamp plate 2 31 to abut against the top of the workpiece 01. Two groups of clamp plates 2 31 are arranged around the workpiece 01. The workpiece 01 is clamped by two groups of clamp plates 2 31, and then the workpiece 01 is fixed. When the clamp plate 2 31 clamps the workpiece 01, the clamp plate 1 22 is separated from the lower end of the workpiece 01, so that the grinding plate 2 46 can grind the lower end of the workpiece 01.

[0043] Reference Figures 1 to 6 A push piece 7 is provided on the workbench 1. The push piece 7 can be set as a cylinder. The cylinder is provided at the bottom of the workbench 1, and the output end of the cylinder is connected to the mounting rod 21. A guide rod 8 is provided on the workbench 1. The guide rod 8 is provided between two sets of clamping plates 31. The guide rod 8 slides in the vertical direction. An inclined block 81 is provided on the side of the guide rod 8 close to the clamping plate 31. An extension part 321 is provided on the slide bar 32. One end of the extension part 321 close to the guide rod 8 slides against the inclined block 81. During grinding, after grinding plate 1 45 grinds the top of workpiece 01, grinding plate 1 45 and grinding plate 2 46 move downward, and at the same time, push piece 7 drives workpiece 01 to move vertically upward through mounting rod 21 until the upper end of workpiece 01 abuts against the end of guide rod 8, workpiece 01 continues to move, driving guide rod 8 to move, and the movement of guide rod 8 drives inclined block 81 to move, and the inclined surface of inclined block 81 abuts against extension portion 321, driving slide rod 32 to slide in a direction away from guide rod 8, and at the same time drives clamp plate 2 31 to move, and after the end of workpiece 01 moves between the two clamp plates 31, the extension portion 321 separates from the inclined block 81, and clamp plate 2 31 moves to abut against the side of workpiece 01 under the action of spring 1 33, clamping the top of workpiece 01.

[0044] Reference Figure 5 and Figure 7, in order to facilitate the separation of the clamping plate 22 from the workpiece 01 after the clamping plate 21 clamps the workpiece 01. A control rod 9 is provided in the mounting rod 21 to slide in the vertical direction. The control rod 9 is provided between the two sets of clamping plates 22. When the clamping plate 22 clamps the workpiece 01, the end of the control rod 9 abuts against the bottom of the workpiece 01 to support the workpiece 01. A spring 91 is provided on the control rod 9. The spring 91 can be set as a spring. The two ends of the spring are respectively connected to the control rod 9 and the mounting rod 21. The spring 91 is used to drive the control rod 9 to move vertically upward. A clamping rod 221 is provided on the clamping plate 22. A clamping plate 92 is provided on the control plate. An opening is provided on the top of the clamping plate 92. A rotating part 222 is provided at the rotation position of the clamping plate 22. The rotating part 222 can be set as a torsion spring. The rotating part 222 is used to drive the clamping plate to rotate in the direction away from the workpiece 01.

[0045] When the clamp plate 22 is separated from the workpiece 01, the control rod 9 will maintain abutment with the end of the workpiece 01 under the action of the elastic member 91. At this time, the push member 7 drives the control rod 9 to move in a direction away from the workpiece 01 through the mounting rod 21 until the control rod 9 is separated from the workpiece 01, thereby reducing the phenomenon of the control rod 9 interfering with the grinding plate 46 and the bottom of the workpiece 01, so that the grinding plate 46 can grind the bottom of the workpiece 01.

[0046] In the initial state, the clamping plate 22 clamps the workpiece 01, the clamping rod 221 abuts against the inner side of the clamping plate 92, and the pushing piece 7 drives the workpiece 01 to move vertically upward. After the clamping plate 231 clamps the workpiece 01, the pushing piece 7 continues to drive the mounting rod 21 to move. At this time, the workpiece 01 slides relative to the clamping plate 22, and at the same time drives the control rod 9 to move vertically downward in the mounting rod 21. The control rod 9 drives the clamping plate 92 to move accordingly until the clamping plate 92 is separated from the clamping rod 221, and the rotating piece 222 drives the clamping plate 22 to rotate and separate from the workpiece 01. At this time, the workpiece 01 is only fixed by the clamping plate 231, so that the grinding plate 246 can grind the bottom of the workpiece 01.

[0047] Reference Figure 5 and Figure 7 The inclined portion 223 is provided on the clamping plate 22, and the clamping plate 22 is rotatably connected to the mounting rod 21 through the inclined portion 223, and the clamping rod 221 is provided on the inclined portion 223. When the clamping plate 22 is separated from the workpiece 01, the rotating member 222 drives the clamping plate 22 to separate from the workpiece 01. The inclined portion 223 is provided, so that after the clamping plate 22 is separated from the workpiece 01, the gap between the mounting rod 21 and the workpiece 01 can be increased, so that the grinding plate 2 46 rotates to abut against the bottom of the workpiece 01, and the bottom end of the workpiece 01 is ground.

[0048] The implementation principle of the present invention is as follows: in the initial state, the clamping plate 22 clamps the workpiece 01, and after the grinding plate 45 grinds the top of the workpiece 01, the grinding plate 45 and the grinding plate 2 46 are both moved to the side of the workpiece 01 to grind the side of the workpiece 01, and at the same time, the push piece 7 drives the workpiece 01 to move vertically upward until the clamping plate 2 31 clamps the workpiece 01, and then the control rod 9 moves relative to the mounting rod 21, the clamping plate 92 separates from the clamping rod 221, and the clamping plate 22 separates from the workpiece 01. When the grinding plate 2 46 moves to the bottom of the workpiece 01, the grinding plate 2 46 rotates to a horizontal state to grind the lower end of the workpiece 01. By adjusting the positions of the grinding plates 1 45 and 2 46, and adjusting the clamping positions of the workpiece 01 according to the grinding positions, the grinding of the sides and both ends of the workpiece 01 when the grinding plates 1 45 and 2 46 move in the vertical direction is achieved, thereby improving the grinding efficiency of the workpiece 01.

[0049] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A concrete surface grinding device, comprising a workbench (1), characterized in that: The workbench (1) is provided with a clamping piece (2), a clamping piece (3), a grinding piece (4) and an adjusting piece (5). The clamping piece (2) and the clamping piece (3) alternately clamp the two ends of the workpiece (01). The adjusting piece (5) and the grinding piece (4) are connected to drive the grinding piece (4) to move in a vertical direction. The grinding piece (4) comprises a mounting frame (44), a grinding plate (45) and a grinding plate (46). The grinding plate (45) and the grinding plate (46) are rotatably arranged on the mounting frame (44). The rotation of the grinding plate (45) and the grinding plate (46) A rotating member (6) is provided at the position, and the rotating member (6) is used to drive the grinding plate (45) and the grinding plate (46) to rotate to a horizontal state. When the grinding plate (45) is in the horizontal state, the clamping member (2) clamps the lower end of the workpiece (01), and the grinding plate (45) grinds the upper end of the workpiece (01). When the grinding plate (46) is in the horizontal state, the clamping member (3) clamps the upper end of the workpiece (01), and the grinding plate (46) grinds the lower end of the workpiece (01). When the grinding plate (45) and the grinding plate (46) are in the vertical state, they grind the side surface of the workpiece (01).

2. The concrete surface grinding device according to claim 1, characterized in that: The clamping piece (2) comprises a mounting rod (21) and a clamping plate (22). The mounting rod (21) is arranged on the workbench (1). Two groups of clamping plates (22) are arranged. The two groups of clamping plates (22) are symmetrically arranged around the workpiece (01). The inner side of the clamping plate (22) abuts against the bottom end of the workpiece (01) to clamp and fix the workpiece (01). When the clamping plate (22) clamps the workpiece (01), the upper end of the workpiece (01) is spaced apart from the clamping piece (3).

3. The concrete surface grinding device according to claim 2, characterized in that: The second clamp (3) comprises a second clamp plate (31), a slide bar (32) and an elastic member (33). The slide bar (32) slides on the workbench (1) in a horizontal direction toward the workpiece (01). The second clamp plate (31) is arranged at one end of the slide bar (32) close to the workpiece (01). The elastic member (33) is connected to the slide bar (32) and the workbench (1) respectively. The elastic member (33) is used to drive the second clamp plate (31) to move toward the workpiece (01). The second clamp (3) has two groups symmetrically arranged around the workpiece (01). The two groups of second clamp plates (31) clamp the workpiece (01) to fix the workpiece (01).

4. The concrete surface grinding device according to claim 3, characterized in that: A push piece (7) is provided on the workbench (1), the output end of the push piece (7) is connected to the mounting rod (21) for driving the workpiece (01) to move in the vertical direction, a guide rod (8) is provided on the workbench (1), the guide rod (8) is arranged between two sets of second clamping plates (31), the guide rod (8) slides in the vertical direction, an inclined block (81) is provided on the guide rod (8), an extension portion (321) is horizontally provided on the slide rod (32), the end of the extension portion (321) is in sliding contact with the inclined block (81), when the guide rod (8) moves upward, the inclined block (81) drives the extension portion (321) to slide in a direction away from the guide rod (8), and when the extension portion (321) is separated from the inclined block (81), the elastic member (33) drives the second clamping plate (31) to clamp the workpiece (01).

5. The concrete surface grinding device according to claim 4, characterized in that: A control rod (9) is slidably arranged inside the mounting rod (21). The control rod (9) is arranged between two groups of clamping plates (22). When the clamping plate (22) clamps the workpiece (01), the end of the control rod (9) abuts against the workpiece (01). A second elastic member (91) is arranged on the control rod (9). The second elastic member (91) is used to drive the control rod (9) to slide in a direction toward the workpiece (01). A clamping rod (221) is arranged on the clamping plate (22). A clamping plate (92) is arranged on the control rod (9). The clamping plate (22) A second rotating member (222) is provided at the rotation axis of the clamping plate (92). The second rotating member (222) is used to drive the clamping plate (22) to rotate in a direction away from the workpiece (01). When the clamping rod (221) abuts against the inner side of the clamping plate (92), the clamping plate (22) clamps the workpiece (01). When the clamping plate (92) and the clamping rod (221) are separated, the first rotating member (6) drives the clamping plate (22) to separate from the workpiece (01). After the clamping plate (22) and the workpiece (01) are separated, the pushing member (7) drives the control rod (9) to move and separate from the workpiece (01).

6. The concrete surface grinding device according to claim 5, characterized in that: The first clamping plate (22) comprises an inclined portion (223), the inclined portion (223) is inclined in a direction toward the control rod (9), the inclined portion (223) is rotatably arranged on the mounting rod (21), and the clamping rod (221) is arranged on the inclined portion (223).

7. The concrete surface grinding device according to claim 1, characterized in that: The mounting frame (44) comprises two connecting parts (441), the ends of the two connecting parts (441) close to the workpiece (01) are inclined in opposite directions in the vertical direction, the first grinding plate (45) and the second grinding plate (46) are respectively connected to the two connecting parts (441), and the first grinding plate (45) and the second grinding plate (46) are spaced apart when both are in a vertical state.

8. The concrete surface grinding device according to claim 7, characterized in that: Two groups of grinding pieces (4) are arranged around the workpiece (01); the lengths of grinding plate 1 (45) and grinding plate 2 (46) are the same; the sum of the lengths of the two grinding plates 1 (45) is greater than the diameter of the workpiece (01); and when the grinding plates 1 (45) are in a horizontal state, the ends of the two grinding plates 1 (45) close to the center of the workpiece (01) overlap.

9. The concrete surface grinding device according to claim 1, characterized in that: The grinding member (4) further comprises a gear ring (41), a gear (42) and a driving member 1 (43); the gear ring (41) is rotatably arranged on the adjusting member (5); the workpiece (01) is spaced apart from the inner wall of the gear ring (41); the mounting frame (44) is arranged on the inner side of the gear ring (41); the driving member 1 (43) is connected to the adjusting member (5); the gear (42) is arranged at the output end of the driving member 1 (43); and the gear (42) and the gear ring (41) are meshed.

10. The concrete surface grinding device according to claim 1, characterized in that: The adjusting member (5) comprises an adjusting ring (51), a screw rod (52) and a second driving member (53); the adjusting ring (51) slides on the workbench (1) in a vertical direction; the grinding member (4) is connected to the adjusting ring (51); the screw rod (52) is arranged in a vertical direction; the screw rod (52) is threadedly connected to the adjusting ring (51); the second driving member (53) is arranged on the workbench (1); and the output end of the second driving member (53) is connected to the screw rod (52).

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