A grinding device for large-area epoxy floor construction

Abstract

The invention discloses a grinding device for large-area epoxy floor construction, which relates to the technical field of grinding and comprises a cart, a loading frame is fixedly mounted on the surface of the cart, a driving motor is fixedly mounted on a side of the loading frame close to the cart, a dust collecting device is fixedly mounted on a side of the loading frame away from the cart, a carrying frame is fixedly penetrated through the inner and outer walls of the cart, a rotating rod is rotatably penetrated through the top of the carrying frame, a grinding disc is fixedly mounted on the bottom of the rotating rod, the output end of the driving motor is transmission-connected to the rotating rod through a belt, and also comprises a dustproof device; the rotating rod is automatically cleaned by a cleaning plate during each inspection, which effectively reduces the complexity of operation and avoids the accumulation of dust and dirt, thereby helping to extend the service life of the rotating rod.

Description

Technical Field

[0001] The invention relates to the technical field of grinding, in particular to a grinding device for large-area epoxy floor construction. Background Art

[0002] In the construction of large-area epoxy flooring, the grinding device is an important tool to ensure that the floor surface is flat, smooth and firm.

[0003] The patent with patent announcement number CN218856401U relates to a grinding device for epoxy floor construction, including a box body, a grinding motor, a grinding disc bearing, a grinding disc and a hydraulic cylinder. A dust suction groove is fixedly installed on the right side of the bottom of the box body, a dust suction bin is opened on the right side of the box body, a support plate is fixedly installed in the inner cavity of the box body, a grinding disc bearing is fixedly sleeved on the bottom of the grinding motor, a grinding disc is fixedly sleeved on the bottom of the grinding disc bearing, a fixing piece is fixedly installed on the surface of the connecting shaft between the grinding disc bearing and the grinding disc, a hydraulic cylinder is fixedly installed on the bottom of the support plate, a moving device is movably sleeved on the bottom of the hydraulic cylinder, a fixing screw is fixedly sleeved on the fixing hole of the fixing piece, and a dust suction device is detachably installed in the inner cavity of the dust suction bin. This patent enables the device to have the advantages of good grinding effect, improved work efficiency, dust suction ability, environmental protection, and easy replacement of grinding discs through the installation of the above components.

[0004] The above patent has the advantages of improving work efficiency and facilitating replacement of grinding discs. By arranging a detachable dust suction device on the inner cavity of the dust suction bin, the maintenance of the dust suction device is convenient. However, during the construction of large-area epoxy flooring, the wear of the grinding disc requires regular inspection by the operator. In addition, dust and abrasives will adhere to the surface of the rotating rod that drives the grinding disc to rotate during the grinding process, which not only increases the burden on the rotating rod, but also aggravates the wear of the rotating rod. As the use time increases, the burden of the rotating rod will gradually increase, resulting in a decrease in grinding efficiency and even affecting the service life of the equipment. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a grinding device for large-area epoxy floor construction, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a grinding device for large-area epoxy floor construction, including a cart, a loading frame is fixedly installed on the surface of the cart, a driving motor is fixedly installed on the side of the loading frame close to the cart, and a dust suction device is fixedly installed on the side of the loading frame away from the cart, the inner and outer walls of the cart are fixedly penetrated by a carrying frame, the top of the carrying frame is rotatably penetrated by a rotating rod, and a grinding disc is fixedly installed on the bottom of the rotating rod, the output end of the driving motor is connected to the rotating rod through a belt transmission, the driving motor is started, and the output end of the driving motor drives the rotating rod to rotate through the belt, and the rotation of the rotating rod drives the grinding disc to rotate, and also includes a dustproof device; wherein, the dustproof device includes a T-shaped rod, a No. 1 spring, a protective shell, an L-shaped slide plate, a No. 2 spring, a stop block, a cleaning plate and a pull plate Rod, the T-shaped rod stretches spring No. 1 during movement, and spring No. 1 is deformed by the stretch, the T-shaped rod slides through the top of the carrying frame, the No. 1 spring is arranged between the T-shaped rod and the carrying frame, the protective shell is fixedly installed at the bottom of the T-shaped rod, the L-shaped slide slides through the top of the inner wall of the protective shell, the No. 2 spring is arranged between the L-shaped slide and the protective shell, the stop block is fixedly installed on the side of the L-shaped slide close to the rotating rod, the cleaning plate is fixedly installed on the side of the L-shaped slide close to the rotating rod, the pull rod is fixedly installed on the top of the protective shell, the pull rod is manually held and moved upward, and the movement of the pull rod drives the protective shell to move upward, and the stop block contacts the circumferential surface of the carrying frame; wherein, the cart is provided with an auxiliary device for limiting the pull rod, and the auxiliary device is provided with a protective device for providing protection.

[0007] According to the above technical solution, a circular hole is opened on the top of the protective shell, and the circular hole contacts the circumferential surface of the mounting frame. The shape of the cleaning plate is set to be an arc, and the concave surface of the cleaning plate contacts the circumferential surface of the rotating rod during movement, so that the cleaning plate moves upward along the circumferential surface of the rotating rod.

[0008] According to the above technical solution, the suction port of the dust suction device is connected to the interior of the protective shell through a hose, and when the dust suction device is started, the suction port of the dust suction device absorbs the dust inside the protective shell through the hose, and the block has an arc surface on one side close to the rotating rod.

[0009] According to the above technical scheme, the auxiliary device includes a fixed plate, a cylindrical rod, a lifting frame, a No. 3 spring, a rotating shaft, a limit plate and a support block. The movement of the limit plate drives the rotating shaft to move downward, and the movement of the rotating shaft drives the lifting frame to move downward. The fixed plate is fixedly installed on the side of the cart close to the pull rod, the cylindrical rod is fixedly installed on the inner wall of the fixed plate, and the lifting frame is slidably installed on the circumferential surface of the cylindrical rod. The No. 3 spring is arranged between the lifting frame and the fixed plate, the rotating shaft is fixedly passed through the inner and outer walls of the lifting frame, the limit plate is rotatably installed on the circumferential surface of the rotating shaft, and the support block is fixedly installed on the inner wall of the lifting frame. The shape of the limit plate is set to be arc-shaped, and the circumferential surface of the pull rod contacts the curved surface of the limit plate during movement, so that the movement of the pull rod drives the limit plate to rotate upward.

[0010] According to the above technical solution, a spiral spring is arranged between the limit plate and the rotating shaft. The limit plate stretches the spiral spring during rotation, and the spiral spring is deformed by the stretching. A corrugated groove is opened on a side of the support block close to the limit plate. The corrugated groove contacts the bottom plane of the limit plate, and the surface of the limit plate in contact with the support block is separated during rotation.

[0011] According to the above technical solution, a sliding groove is provided on one side of the fixed plate close to the rotating shaft, and the rotating shaft contacts the inner wall of the sliding groove. When the rotating shaft moves, the fixed plate provides support for the rotating shaft through the sliding groove, so that the rotating shaft moves more smoothly. Spherical surfaces are provided at both ends of the rotating shaft.

[0012] According to the above technical scheme, the protective device includes a connecting frame, a comb plate, a convex rod, a No. 1 spring sheet, a contact plate, a rubber block and a No. 2 spring sheet. The convex rod stretches the No. 1 spring sheet during movement, and the No. 1 spring sheet is deformed by the stretching. The connecting frame is fixedly installed on the surface of the fixed plate, the comb plate is fixedly installed on the inner wall of the connecting frame, the convex rod slides through the inner and outer walls of the connecting frame, the No. 1 spring sheet is arranged between the convex rod and the connecting frame, the contact plate is fixedly installed on the top of the convex rod, the rubber block slides through the inner and outer walls of the contact plate, the No. 2 spring sheet is arranged between the rubber block and the contact plate, and a plurality of tooth blocks are fixedly installed on a side of the comb plate close to the contact plate. The tooth blocks themselves are elastic, and the spherical surface of the rotating shaft intermittently contacts with the plurality of tooth blocks of the comb plate during movement. Each time they contact, the spherical surface applies downward pressure to the tooth blocks, and a groove is provided on the top of the contact plate.

[0013] According to the above technical solution, the shape of the rubber block is set to be trapezoidal, and the inclined surface of the rubber block contacts the inner wall of the connection frame during movement, so that the rubber block moves toward the contact plate, and the shape of the tooth block is set to be "V" shape, and the tooth blocks are equidistantly distributed.

[0014] The present invention provides a grinding device for large-area epoxy floor construction. It has the following beneficial effects:

[0015] (1) The grinding device for large-area epoxy floor construction is used to hold the pull rod and move it upward. The movement of the pull rod drives the protective shell to move upward. Through the slidable opening design of the protective shell, the operator can easily check the use of the grinding disc to ensure that the grinding disc is in good working condition and avoid affecting the grinding quality due to damage or excessive wear of the grinding disc. At the same time, the cleaning plate moves upward to clean the dust adhering to the surface of the rotating rod. The cleaning plate automatically cleans the rotating rod during each inspection, which effectively reduces the complexity of operation and avoids the accumulation of dust and dirt, thereby reducing the burden on the rotating rod and helping to extend the service life of the rotating rod.

[0016] (2) In the grinding device for large-area epoxy floor construction, the No. 3 spring applies a reaction force to the lifting frame, so that the limit plate applies an upward supporting force to the pull rod. The limit plate applies additional supporting force to the pull rod, which effectively reduces the physical burden of the operator. At the same time, it also limits the pull rod moved to the specified position. The operator can release the pull rod at this position to inspect the grinding disc and manually control the limit plate to rotate upward and separate from the support block. Through standardized operating steps, the limit imposed by the limit plate on the pull rod can be quickly released, ensuring the standardization of the operation, allowing the operator to focus more on efficient work and reducing the time wasted due to misoperation.

[0017] (3) In the grinding device for large-area epoxy floor construction, the deformed tooth block applies additional resistance to the rotating shaft under the action of its own elasticity. By setting a comb plate, intermittent resistance is applied to the downward moving shaft, which effectively slows down the speed of the rotating shaft and avoids collision caused by excessive speed of the rotating shaft due to operational errors, thereby improving the safety of operation. At the same time, the rubber block continues to move and generates friction with the connecting frame. By setting the rubber block for secondary protection, it can effectively prevent the pull rod from getting out of control or accidentally falling off, causing harm to personnel and the protective shell, thereby ensuring the safety and reliability of the grinding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the cart and the loading frame of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the dustproof device of the present invention;

[0021] Figure 4 It is a schematic diagram of the internal structure of the dustproof device of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the auxiliary device and the protective device of the present invention;

[0023] Figure 6It is a schematic diagram of the internal structure of the auxiliary device of the present invention;

[0024] Figure 7 It is a schematic diagram of the internal structure of the protective device of the present invention.

[0025] In the figure: 1. cart; 2. loading frame; 3. driving motor; 4. dust suction device; 5. carrying frame; 6. rotating rod; 7. grinding disc; 8. T-shaped rod; 9. spring No. 1; 10. protective shell; 11. L-shaped slide plate; 12. spring No. 2; 13. stop block; 14. cleaning plate; 15. pull rod; 151. fixing plate; 152. cylindrical rod; 153. lifting frame; 154. spring No. 3; 155. rotating shaft; 156. limiting plate; 157. supporting block; 161. connecting frame; 162. comb plate; 163. convex rod; 164. spring No. 1; 165. contact plate; 166. rubber block; 167. spring No. 2. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1-Figure 4, one embodiment of the present invention is: a grinding device for large-area epoxy floor construction, including a cart 1, a loading frame 2 is fixedly installed on the surface of the cart 1, a driving motor 3 is fixedly installed on the side of the loading frame 2 close to the cart 1, and a dust suction device 4 is fixedly installed on the side of the loading frame 2 away from the cart 1, and a carrying frame 5 is fixedly penetrated through the inner and outer walls of the cart 1, and a rotating rod 6 is rotatably penetrated through the top of the carrying frame 5, and a grinding disc 7 is fixedly installed on the bottom of the rotating rod 6. The output end of the driving motor 3 is connected to the rotating rod 6 through a belt, and also includes a dustproof device; wherein the dustproof device includes a T-shaped rod 8, a No. 1 spring 9, a protective shell 10, an L-shaped slide plate 11, a No. 2 spring 12, a stop block 13, a cleaning plate 14 and a pull rod 15, the T-shaped rod 8 It slides through the top of the mounting frame 5, spring No. 1 9 is arranged between the T-shaped rod 8 and the mounting frame 5, the protective shell 10 is fixedly installed at the bottom of the T-shaped rod 8, the L-shaped slide plate 11 slides through the top of the inner wall of the protective shell 10, the second spring 12 is arranged between the L-shaped slide plate 11 and the protective shell 10, the stop block 13 is fixedly installed on the side of the L-shaped slide plate 11 close to the rotating rod 6, the cleaning plate 14 is fixedly installed on the side of the L-shaped slide plate 11 close to the rotating rod 6, the pull rod 15 is fixedly installed on the top of the protective shell 10, the stop block 13 contacts with the circumferential surface of the mounting frame 5, and through the slidable opening design of the protective shell 10, the operator can easily check the use of the grinding disc 7 to ensure that the grinding disc 7 is in good working condition.

[0028] A circular hole is provided on the top of the protective shell 10, which contacts the circumferential surface of the mounting frame 5. The cleaning plate 14 is arranged to be arc-shaped, and the rotating rod 6 is automatically cleaned by the cleaning plate 14 during each inspection, thereby effectively reducing the complexity of operation and avoiding the accumulation of dust and dirt.

[0029] The suction port of the dust suction device 4 is connected to the interior of the protective shell 10 through a hose. The block 13 is provided with an arc surface on one side close to the rotating rod 6. By providing the arc surface on the block 13, it is ensured that the block 13 can move smoothly when in contact with the mounting frame 5, thereby ensuring the stable progress of the grinding work.

[0030] When the present embodiment is working, the driving motor 3 is started, and the output end of the driving motor 3 drives the rotating rod 6 to rotate through the belt, and the rotating rod 6 drives the grinding disc 7 to rotate, and the grinding disc 7 rotates to grind the surface of the epoxy floor. A large amount of dust generated during the grinding process is effectively blocked by the protective shell 10 to prevent the dust from spreading to the external environment. At the same time, the dust suction device 4 is started, and the dust suction port of the dust suction device 4 absorbs the dust inside the protective shell 10 through a hose to ensure the cleanliness of the air in the working area. During the large-area grinding operation, when it is necessary to check the condition of the grinding disc 7, the driving motor 3 and the dust suction device 4 are turned off, and the pull rod 15 is manually held to move upward. The movement of the pull rod 15 drives the protective shell 10 to move upward, and the protective shell 10 moves upward. The protective shell 10 is designed to slide and open so that the operator can easily check the use of the grinding disc 7 to ensure that the grinding disc 7 is in a good working condition and avoid affecting the grinding quality due to damage or excessive wear of the grinding disc 7. The movement of the protective shell 10 drives the L-shaped slide plate 11 to move upward, and the movement of the L-shaped slide plate 11 drives the cleaning plate 14 to move upward. At the same time, the movement of the L-shaped slide plate 11 drives the resisting block 13 to move upward, and the resisting block 13 moves upward. The surface in contact with the mounting frame 5 during movement is separated, so that the deformed No. 2 spring 12 is restored to drive the L-shaped slide plate 11 to move in the direction of the rotating rod 6. The movement of the L-shaped slide plate 11 drives the stop block 13 to move in the direction of the rotating rod 6. At the same time, the movement of the L-shaped slide plate 11 drives the cleaning plate 14 to move in the direction of the rotating rod 6. The concave surface of the cleaning plate 14 contacts the circumferential surface of the rotating rod 6 during movement, so that the cleaning plate 14 moves upward along the circumferential surface of the rotating rod 6 and cleans the dust adhering to the surface of the rotating rod 6. When the grinding disc 7 completes the inspection, the control pull rod 15 moves downward. The movement of the pull rod 15 drives the protective shell 10 to move downward. The movement of the protective shell 10 drives the L-shaped slide plate 11 to move downward. The movement of the L-shaped slide plate 11 drives the stop block 13 and the cleaning plate 14 to contact the inner concave surface of the cleaning plate 14. The plate 14 moves downward, and the arc surface of the stop block 13 contacts the circumferential surface of the mounting frame 5 during the movement. The mounting frame 5 applies resistance to the moving stop block 13, so that the stop block 13 moves in the direction away from the rotating rod 6. The movement of the stop block 13 drives the L-shaped slide plate 11 to move in the direction away from the rotating rod 6. The L-shaped slide plate 11 squeezes the No. 1 spring 9 during the movement. At the same time, the movement of the L-shaped slide plate 11 drives the cleaning plate 14 to move in the direction away from the rotating rod 6. The surface of the cleaning plate 14 in contact with the rotating rod 6 during the movement is separated. The cleaning plate 14 automatically cleans the rotating rod 6 during each inspection, which effectively reduces the complexity of the operation and avoids the accumulation of dust and dirt, thereby reducing the burden on the rotating rod 6 and helping to extend the service life of the rotating rod 6.

[0031] See also Figure 1-Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, an auxiliary device for limiting the pull rod 15 is provided on the cart 1, and a protective device for providing protection is provided on the auxiliary device. The auxiliary device includes a fixed plate 151, a cylindrical rod 152, a lifting frame 153, a third spring 154, a rotating shaft 155, a limiting plate 156 and a supporting block 157. The fixed plate 151 is fixedly installed on a side of the cart 1 close to the pull rod 15, and the cylindrical rod 152 is fixedly installed on the inner wall of the fixed plate 151. The lifting frame 153 is slidably installed on the circumferential surface of the cylindrical rod 152, the No. 3 spring 154 is arranged between the lifting frame 153 and the fixed plate 151, the rotating shaft 155 is fixedly passed through the inner and outer walls of the lifting frame 153, the limiting plate 156 is rotatably installed on the circumferential surface of the rotating shaft 155, the support block 157 is fixedly installed on the inner wall of the lifting frame 153, and the shape of the limiting plate 156 is set to be arc-shaped. The limiting plate 156 applies additional supporting force to the pull rod 15, which effectively reduces the physical burden of the operator.

[0032] A spiral spring is arranged between the limit plate 156 and the rotating shaft 155. A corrugated groove is provided on the side of the support block 157 close to the limit plate 156. The corrugated groove is in contact with the bottom plane of the limit plate 156. Through standardized operating steps, the limit imposed by the limit plate 156 on the pull rod 15 can be quickly released, ensuring the standardization of the operation and allowing the operator to focus more on efficient work.

[0033] A slide groove is provided on one side of the fixed plate 151 close to the rotating shaft 155, and the rotating shaft 155 contacts the inner wall of the slide groove. Spherical surfaces are provided at both ends of the rotating shaft 155. By limiting the pull rod 15 moved to the specified position, the operator can loosen the pull rod 15 at this position and inspect the grinding disc 7.

[0034] The protective device includes a connection frame 161, a comb plate 162, a convex rod 163, a first spring piece 164, a contact plate 165, a rubber block 166 and a second spring piece 167. The connection frame 161 is fixedly mounted on the surface of the fixed plate 151, the comb plate 162 is fixedly mounted on the inner wall of the connection frame 161, the convex rod 163 slides through the inner and outer walls of the connection frame 161, the first spring piece 164 is arranged between the convex rod 163 and the connection frame 161, and the contact plate 165 is fixedly mounted on the inner wall of the convex rod 163. At the top, the rubber block 166 slides through the inner and outer walls of the contact plate 165, and the second spring piece 167 is arranged between the rubber block 166 and the contact plate 165. A plurality of tooth blocks are fixedly installed on one side of the comb plate 162 close to the contact plate 165. The tooth block itself is elastic, and a groove is provided on the top of the contact plate 165. By setting the comb plate 162, intermittent resistance is applied to the downward moving shaft 155, thereby effectively slowing down the moving speed of the shaft 155, and avoiding collision caused by excessive movement of the shaft 155 when operating errors occur.

[0035] The shape of the rubber block 166 is set to be trapezoidal, and the shape of the tooth block is set to be "V" shape. The tooth blocks are evenly distributed. By setting the rubber block 166 for secondary protection, it is effectively prevented from causing harm to personnel and the protective shell 10 when the pull rod 15 loses control or accidentally falls, thereby ensuring the safety and reliability of the grinding work.

[0036] When the present embodiment is working, the circumferential surface of the pull rod 15 contacts the curved surface of the limit plate 156 during movement, so that the pull rod 15 moves and drives the limit plate 156 to rotate upward, and the limit plate 156 stretches the spiral spring during rotation, and the spiral spring is deformed by the stretching, and at the same time, the contact surface of the limit plate 156 with the support block 157 is separated during rotation. When the pull rod 15 continues to move and the contact surface of the limit plate 156 is separated, the deformed spiral spring recovers and drives the limit plate 156 to rotate downward, and when the limit plate 156 rotates to the initial position, it contacts the corrugated groove of the support block 157 again, and the pull rod 15 moves downward again. During the movement, the circumferential surface of the pull rod 15 contacts the inner concave surface of the limit plate 156, so that the pull rod 15 moves and drives the limit plate 156 to move downward, the limit plate 156 moves and drives the rotating shaft 155 to move downward, the rotating shaft 155 moves and drives the lifting frame 153 to move downward, and the lifting frame 153 squeezes the No. 3 spring 154 during the movement, and the No. 3 spring 154 is squeezed and deformed. The deformed No. 3 spring 154 exerts a reaction force on the lifting frame 153 under the action of its own elasticity, so that the limit plate 156 exerts an upward supporting force on the pull rod 15, and the limit plate 156 exerts an upward supporting force on the pull rod 15. The rod 15 applies additional supporting force, which effectively reduces the physical burden of the operator, and also limits the rod 15 moved to the specified position. The operator can loosen the rod 15 at this position to inspect the grinding disc 7. When the protective shell 10 needs to be reset, the rod 15 is first controlled to move upward and separate from the limit plate 156, so that the deformed No. 3 spring 154 is restored to drive the lifting frame 153 to move upward, and the lifting frame 153 moves to drive the rotating shaft 155 and the support block 157 to move upward, and the rotating shaft 155 moves to drive the limit plate 156 to move upward. When the lifting frame 153 is reset to the starting position, After the start position, the limit plate 156 is manually controlled to rotate upward and separate from the support block 157. The limit plate 156 stretches the scroll spring during rotation. When the limit plate 156 rotates to the specified position, the pull rod 15 is controlled to move downward to the start position, and then the control of the limit plate 156 is released, so that the deformed scroll spring recovers and drives the limit plate 156 to return to the initial position. Through standardized operating steps, the limit imposed by the limit plate 156 on the pull rod 15 can be quickly released, ensuring the standardization of the operation, allowing the operator to focus more on efficient work, and reducing the time waste caused by misoperation.

[0037] When the rotating shaft 155 moves downward, the spherical surface of the rotating shaft 155 intermittently contacts with the multiple tooth blocks of the comb plate 162 during movement. Each time the spherical surface contacts, the tooth blocks exert downward pressure on the tooth blocks. The tooth blocks affected by the pressure bend downward and deform. The deformed tooth blocks exert additional resistance on the rotating shaft 155 under the action of their own elasticity, causing the speed of the rotating shaft 155 moving downward to be slowed down by the additional resistance. Whenever the rotating shaft 155 separates from the tooth blocks, the deformed tooth blocks automatically recover under the action of their own elasticity. When the rotating shaft 155 moves upward, The spherical surface of the rotating shaft 155 contacts the inclined surface of the tooth block during movement, and the rotating shaft 155 continues to move and squeeze the tooth block, causing the tooth block to be slightly deformed. After the slight deformation, the tooth block separates from the rotating shaft 155 and recovers quickly. By setting the comb plate 162 to apply intermittent resistance to the rotating shaft 155 moving downward, the speed of the rotating shaft 155 is effectively slowed down to avoid collision caused by excessive speed of the rotating shaft 155 when operating errors occur, thereby improving the safety of operation. The circumferential surface of the rotating shaft 155 contacts the groove of the contact plate 165 during movement, so that the movement of the rotating shaft 155 drives the contact plate 165 to move. The plate 165 moves downward, and the movement of the contact plate 165 drives the convex rod 163 to move downward. The convex rod 163 stretches the No. 1 spring sheet 164 during the movement. The No. 1 spring sheet 164 is stretched and deformed. At the same time, the movement of the contact plate 165 drives the rubber block 166 to move downward. The inclined surface of the rubber block 166 contacts the inner wall of the connecting frame 161 during the movement. The connecting frame 161 applies resistance to the moving rubber block 166, so that the rubber block 166 moves toward the contact plate 165. The rubber block 166 squeezes the No. 2 spring sheet 167 during the movement. The No. 1 spring piece 167 is squeezed and deformed, and the deformed No. 2 spring piece 167 exerts a reaction force on the rubber block 166, so that the rubber block 166 is in close contact with the inner wall of the connecting frame 161. As the rubber block 166 continues to move and generates friction with the connecting frame 161, the moving speed of the rotating shaft 155 is effectively controlled by the friction resistance. By providing the rubber block 166 for secondary protection, it is effectively prevented from causing harm to personnel and the protective shell 10 when the pull rod 15 loses control or accidentally falls, thereby ensuring the safety and reliability of the grinding work.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding device for large-area epoxy floor construction, comprising a cart (1), characterized in that: A loading frame (2) is fixedly mounted on the surface of the cart (1); a driving motor (3) is fixedly mounted on a side of the loading frame (2) close to the cart (1); a dust collecting device (4) is fixedly mounted on a side of the loading frame (2) away from the cart (1); a carrying frame (5) is fixedly penetrated through the inner and outer walls of the cart (1); a rotating rod (6) is rotatably penetrated through the top of the carrying frame (5); a grinding disc (7) is fixedly mounted on the bottom of the rotating rod (6); an output end of the driving motor (3) is connected to the rotating rod (6) through a belt, and a dust prevention device is also included; The dustproof device comprises a T-shaped rod (8), a No. 1 spring (9), a protective shell (10), an L-shaped slide plate (11), a No. 2 spring (12), a stop block (13), a cleaning plate (14) and a pull rod (15); the T-shaped rod (8) slides through the top of the mounting frame (5); the No. 1 spring (9) is arranged between the T-shaped rod (8) and the mounting frame (5); the protective shell (10) is fixedly mounted on the bottom of the T-shaped rod (8); the L-shaped slide plate (11) slides The second spring (12) is arranged between the L-shaped slide plate (11) and the protective shell (10), the stop block (13) is fixedly mounted on a side of the L-shaped slide plate (11) close to the rotating rod (6), the cleaning plate (14) is fixedly mounted on a side of the L-shaped slide plate (11) close to the rotating rod (6), the pull rod (15) is fixedly mounted on the top of the protective shell (10), and the stop block (13) is in contact with the circumferential surface of the mounting frame (5); The trolley (1) is provided with an auxiliary device for limiting the pull rod 15, and the auxiliary device is provided with a protective device for providing protection.

2. A grinding device for large-area epoxy floor construction according to claim 1, characterized in that: A circular hole is provided on the top of the protective shell (10), the circular hole is in contact with the circumferential surface of the mounting frame (5), and the shape of the cleaning plate (14) is set to be an arc.

3. A grinding device for large-area epoxy floor construction according to claim 2, characterized in that: The dust suction port of the dust suction device (4) is connected to the interior of the protective shell (10) through a hose, and a curved surface is formed on a side of the stop block (13) close to the rotating rod (6).

4. A grinding device for large-area epoxy floor construction according to claim 3, characterized in that: The auxiliary device comprises a fixed plate (151), a cylindrical rod (152), a lifting frame (153), a No. 3 spring (154), a rotating shaft (155), a limiting plate (156) and a supporting block (157); the fixed plate (151) is fixedly mounted on a side of the cart (1) close to the pull rod (15); the cylindrical rod (152) is fixedly mounted on the inner wall of the fixed plate (151); the lifting frame (153) is slidably mounted on the circumferential surface of the cylindrical rod (152); the No. 3 spring (154) is arranged between the lifting frame (153) and the fixed plate (151); the rotating shaft (155) is fixedly passed through the inner and outer walls of the lifting frame (153); the limiting plate (156) is rotatably mounted on the circumferential surface of the rotating shaft (155); the supporting block (157) is fixedly mounted on the inner wall of the lifting frame (153); and the shape of the limiting plate (156) is set to be arc-shaped.

5. A grinding device for large-area epoxy floor construction according to claim 4, characterized in that: A scroll spring is provided between the limiting plate (156) and the rotating shaft (155); a corrugated groove is provided on a surface of the supporting block (157) close to the limiting plate (156); the corrugated groove is in contact with the bottom plane of the limiting plate (156).

6. A grinding device for large-area epoxy floor construction according to claim 5, characterized in that: A sliding groove is provided on one side of the fixed plate (151) close to the rotating shaft (155), the rotating shaft (155) is in contact with the inner wall of the sliding groove, and spherical surfaces are provided at both ends of the rotating shaft (155).

7. A grinding device for large-area epoxy floor construction according to claim 6, characterized in that: The protective device comprises a connection frame (161), a comb plate (162), a convex rod (163), a first spring piece (164), a contact plate (165), a rubber block (166) and a second spring piece (167); the connection frame (161) is fixedly mounted on the surface of the fixing plate (151); the comb plate (162) is fixedly mounted on the inner wall of the connection frame (161); the convex rod (163) slides through the inner and outer walls of the connection frame (161); the first spring piece (164) is arranged on the convex The contact plate (165) is fixedly mounted on the top of the convex rod (163) and the connecting frame (161). The rubber block (166) slides through the inner and outer walls of the contact plate (165). The second spring sheet (167) is arranged between the rubber block (166) and the contact plate (165). A plurality of tooth blocks are fixedly mounted on one side of the comb plate (162) close to the contact plate (165). The tooth blocks themselves are elastic. A groove is provided on the top of the contact plate (165).

8. A grinding device for large-area epoxy floor construction according to claim 7, characterized in that: The shape of the rubber block (166) is set to be a trapezoid, the shape of the tooth block is set to be a "V" shape, and the tooth blocks are equidistantly distributed.

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