Automatic grinding machine for manhole cover

Abstract

The present invention relates to the technical field of manhole cover processing, and specifically discloses an automatic grinding machine for manhole covers, including a support seat and a manhole cover body, the upper surface of the support seat is fixedly connected with a mounting frame, the top inner wall of the mounting frame is fixedly connected with a motor, the output end of the motor passes through the mounting frame and is fixedly connected with gear three, the top of the mounting frame is rotatably connected with gear two, and gear two and gear three are meshed with each other; the manhole cover body can be firmly clamped on the support seat by a support block and a pressure plate, so that the lower surface of the manhole cover fits tightly with the roller, when the motor drives the mounting seat to rotate, the roller rolls and drives the grinding roller to rotate, so as to achieve grinding of the outer peripheral surface of the manhole cover, and during grinding, the grinding roller slides in the fixed plate to adapt to protrusions or burrs of different specifications, and three groups of grinding rollers work in sequence to quickly remove larger protrusions and burrs. In addition, three groups of grinding rollers with different mesh sizes can meet the grinding needs more quickly, greatly improving efficiency and quality.

Description

Technical Field

[0001] The invention relates to the technical field of manhole cover processing, and in particular to an automatic grinding machine for manhole covers. Background Art

[0002] With the development of cities, underground pipeline systems are becoming increasingly complex, and a large number of manhole covers are needed to cover inspection wells. In order to ensure the quality and safety of the manhole covers, they need to be polished to remove burrs and unevenness on the surface of the manhole covers, improve their flatness and finish, ensure a close fit between the manhole cover and the wellhead, reduce noise and vibration, and also remove the oxide layer and corrosion on the surface of the manhole cover, reduce the possibility of leakage and looseness, and extend the service life of the manhole cover.

[0003] At present, the outer surface of the manhole cover is usually ground by belt grinding. The working principle is to grind the workpiece with the help of abrasive grains on the belt through close contact between the belt and the workpiece surface. During the grinding process, the belt rotates and moves continuously, and the abrasive grains produce friction and cutting action with the workpiece surface, thereby effectively removing the material on the workpiece surface, and finally achieving the purpose of grinding and polishing.

[0004] However, in actual operation, when a large protrusion appears on the outer surface of the manhole cover, repeated grinding is often required to completely remove the protrusion. After the protrusion is removed, it is necessary to replace the sandpaper with a higher mesh count for further grinding to ensure that the flatness and smoothness of the outer surface of the manhole cover meet the relevant standards and requirements. Although this treatment method can achieve the expected effect, it has the problem of long grinding time. The sanding belt needs to be moved to the protrusion position for rotation grinding many times, which not only increases the complexity of the operation, but also consumes a lot of time and energy. In addition, the operation of frequently replacing sandpaper with a lower mesh count for fine grinding according to specific needs greatly affects the grinding efficiency, which will lead to delays in production progress and increased costs.

[0005] Therefore, it is necessary to provide an automatic grinding machine for a manhole cover to solve the above problems. Summary of the invention

[0006] The main purpose of the present invention is to provide an automatic grinding machine for manhole covers, which can effectively solve the problems in the background technology.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] An automatic grinding machine for a manhole cover comprises a support seat and a manhole cover body, the upper surface of the support seat is fixedly connected with a mounting frame, the top inner wall of the mounting frame is fixedly connected with a motor, the output end of the motor passes through the mounting frame and is fixedly connected with a gear three, the top of the mounting frame is rotatably connected with a gear two, the gear two and the gear three are meshed with each other, the upper surface of the gear two is evenly fixedly connected with limiting rods in a ring array, the tops of several limiting rods are slidably connected with the same movable disk, the outer side of the movable disk is slidably connected with a mounting seat through a guide rail, the interior of the mounting seat is symmetrically provided with adjustment components, and the top of the mounting seat is symmetrically provided with a grinding component;

[0009] The grinding assembly includes a mounting plate slidably connected to the top of the mounting seat, and three groups of six fixed plates are fixedly connected to one end of the mounting plate close to the movable disk, a slider is slidably connected to the inside of each group of two fixed plates, and grinding rollers are rotatably connected to the insides of the two sliders, and a sliding seat is slidably connected to the lower surface of the fixed plate at the bottom, and a worm gear is fixedly connected to one end of the grinding roller that passes through the sliding seat, a transmission rod is slidably connected to the inner side of the sliding seat, and a worm gear is rotatably connected to the inside of the sliding seat, the worm gear and the worm gear are meshed with each other, the transmission rod is slidably connected to the inner side of the worm gear, and a roller is fixedly connected to one end of the grinding roller close to the movable disk.

[0010] As a further improvement of the above scheme, the top of the support seat is fixedly connected to a support frame, the top of the support frame is fixedly installed with a hydraulic cylinder, the movable end of the hydraulic cylinder passes through the support frame and is fixedly connected to a pressure plate, the top of the mounting seat is fixedly connected to a guide seat, and the upper surface of the mounting frame is fixedly connected to a support block that passes through the movable plate and gear 2.

[0011] As a further improvement of the above scheme, the adjustment assembly includes a movable seat slidably connected to the inner side of the mounting seat, the inner side of the movable seat is slidably connected to a movable block, the mounting plate and the movable block are fixedly connected, the movable seat is internally rotatably connected to a screw rod, the screw rod is threadedly installed on the inner side of the movable block, the inner side of the screw rod is slidably connected to a drive rod through a slide rail, the drive rod is rotatably connected to the inner side of the mounting seat, one end of the drive rod close to the movable disk is fixedly connected to gear 1, the mounting seat is internally rotatably connected to an end face toothed disk, and the end face toothed disk and gear 1 are meshed with each other.

[0012] As a further improvement of the above solution, a circular groove is provided on the inner wall of one end of the fixing plate close to the mounting plate, and a spring 1 is fixedly connected between the sliding block and the inner wall of the circular groove.

[0013] As a further improvement of the above solution, the lower surface of the fixed plate at the bottom is fixedly connected to a support plate, the inner side of the mounting plate is fixedly connected to a limiting sleeve, and the transmission rod is rotatably connected to the support plate and the inner side of the limiting sleeve.

[0014] As a further improvement of the above solution, a sliding groove is provided on the outer wall of the limiting sleeve, a protrusion is fixedly connected to the inner side of the worm, and the protrusion is slidably connected in the sliding groove on the limiting sleeve.

[0015] As a further improvement of the above solution, a second spring is fixedly connected between the movable disk and the second gear, and the second spring is sleeved on the outside of the limiting rod. A truncated cone-shaped groove with a smaller upper part and a larger lower part is provided on the lower surface of the movable disk.

[0016] As a further improvement of the above solution, a connecting rod is rotatably connected between the movable disk and the movable seat, and a groove for accommodating the connecting rod is formed on the lower surface of the mounting seat.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Through the support block and the pressure plate, the manhole cover body can be firmly clamped on the support seat, so that the lower surface of the manhole cover body is closely attached to the roller. When the motor drives the mounting seat to rotate, the rolling of the roller at the bottom of the manhole cover body can pull the grinding roller to rotate, thereby realizing the grinding operation of the outer peripheral surface of the manhole cover body, and during the grinding process, the sliding of the grinding roller in the fixed plate can adapt to various specifications of protrusions or burrs. In this way, larger protrusions and burrs can be quickly removed under the sequential grinding action of the three sets of grinding rollers. In addition, by using three sets of grinding rollers designed with different mesh sizes, the grinding requirements of the manhole cover body can be met more quickly, which greatly improves the grinding efficiency and also improves the grinding quality.

[0019] 2. With the meshing connection between the end face toothed disc and gear one, the operator can use the end face toothed disc to drive the driving rod to rotate, and the driving rod can adjust the position of the movable block. In this way, the movable block can drive the mounting plate to change its position, thereby meeting the grinding requirements of manhole cover bodies of different diameters, improving the overall applicability of the device, reducing the cost of enterprises purchasing multiple equipment to meet various manhole cover specifications, and effectively saving resources. In addition, the precise position adjustment function also ensures the accuracy and quality of grinding, and reduces uneven grinding or defects caused by size mismatch.

[0020] 3. The pressure plate drives the manhole cover body to squeeze the movable plate and move downward. The movable plate pulls the grinding components at both ends to move toward each other through the connecting rod, thereby realizing the clamping of the manhole cover body between six sets of grinding rollers at both ends, ensuring the convenience of loading and stability after loading, and effectively preventing the manhole cover from displacement or shaking during the grinding process, avoiding uneven grinding or even damage to the manhole cover due to position deviation. In addition, stable clamping can also reduce equipment wear and failure, extend the service life of the equipment, and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. 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 creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the installation structure of the manhole cover body of the present invention;

[0024] Figure 3 It is a schematic diagram of the guide seat structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the internal structure of the support frame of the present invention;

[0026] Figure 5 It is a schematic diagram of the top structure of the mounting frame of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the grinding assembly of the present invention;

[0028] Figure 7 It is a schematic diagram of the cross-sectional structure of the mounting seat of the present invention;

[0029] Figure 8 It is a schematic diagram of the bottom structure of the mounting base of the present invention;

[0030] Fig. 9 It is a schematic diagram of the cross-sectional structure of the fixing plate of the present invention;

[0031] Fig.10 It is a schematic diagram of the cross-sectional structure of the slide seat of the present invention.

[0032] In the figure: 1. Support seat; 2. Manhole cover body; 3. Support frame; 4. Hydraulic cylinder; 5. Mounting frame; 6. Guide seat; 7. Mounting seat;

[0033] 801, mounting plate; 802, fixing plate; 803, grinding roller; 804, sliding seat; 805, sliding block; 806, spring 1; 807, worm gear; 808, supporting plate; 809, limiting sleeve; 810, worm; 811, roller; 812, transmission rod; 813, bump;

[0034] 901, movable seat; 902, movable block; 903, screw rod; 904, end face gear plate; 905, gear 1; 906, driving rod; 907, connecting rod;

[0035] 10. Movable plate; 11. Motor; 12. Gear 2; 13. Gear 3; 14. Limit rod; 15. Support block; 16. Pressure plate; 17. Spring 2. DETAILED DESCRIPTION

[0036] 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.

[0037] See also Figures 1 to 10 As shown, the present invention provides an embodiment:

[0038] An automatic grinding machine for a manhole cover comprises a support seat 1 and a manhole cover body 2. The upper surface of the support seat 1 is fixedly connected with a mounting frame 5. A motor 11 is fixedly connected to the top inner wall of the mounting frame 5. The output end of the motor 11 passes through the mounting frame 5 and is fixedly connected with a gear three 13. The top of the mounting frame 5 is rotatably connected with a gear two 12. The gear two 12 and the gear three 13 are meshed with each other. The upper surface of the gear two 12 is evenly fixedly connected with limiting rods 14 in a ring array. The tops of several limiting rods 14 are slidably connected with the same movable disk 10. The outer side of the movable disk 10 is slidably connected with a mounting seat 7 through a guide rail. The inside of the seat 7 is symmetrically provided with an adjustment component, the top of the mounting seat 7 is symmetrically provided with a grinding component, the top of the support seat 1 is fixedly connected with a support frame 3, the top of the support frame 3 is fixedly installed with a hydraulic cylinder 4, the movable end of the hydraulic cylinder 4 penetrates the support frame 3 and is fixedly connected with a pressure plate 16, the top of the mounting seat 7 is fixedly connected with a guide seat 6, the upper surface of the mounting frame 5 is fixedly connected with a support block 15 penetrating the movable disk 10 and the gear 2 12, the movable disk 10 and the gear 2 12 are fixedly connected with a spring 2 17, the spring 2 17 is sleeved on the outside of the limit rod 14, and the lower surface of the movable disk 10 is provided with a truncated cone-shaped groove with a small upper part and a large lower part;

[0039] The support seat 1 can be used to support and install the entire device, and ensure the support stability of the manhole cover body 2 after being supported on the support seat 1, so as to avoid the manhole cover body 2 driving the entire device to deflect due to unstable support, thereby causing safety accidents. The mounting frame 5 can provide an installation space for the motor 11 and support the mounting seat 7, so that the mounting seat 7 can stably rotate at the bottom of the manhole cover body 2. The motor 11 can provide power for the rotation of the mounting seat 7, thereby ensuring that the grinding assembly can rotate on the outer peripheral surface of the manhole cover body 2 to achieve circumferential grinding. Through the meshing of gear 2 12 and gear 3 13 and the sliding connection of gear 2 12 with the movable disk 10 through the limit rod 14, the gear 2 12 can rotate synchronously with the movable disk 10, and will not affect the support stability of the manhole cover body 2 on the top of the support block 15. The downward movement of the movable disk 10 when squeezed by the pressure plate 16 can drive the grinding assemblies at both ends to move toward each other through the spring 2 17, thereby achieving the grinding assemblies of the manhole cover body 2 at both ends. The clamping between them ensures the convenience of loading and the stability after loading, effectively prevents the manhole cover from being displaced or shaken during the grinding process, and avoids uneven grinding or even damage to the manhole cover due to position deviation. The support frame 3 can be used to realize the installation of the hydraulic cylinder 4 just above the center of the support seat 1, and the downward pressure of the pressure plate 16 on the movable end of the hydraulic cylinder 4 can ensure the stable clamping of the manhole cover body 2 between the support block 15 and the pressure plate 16, and push the movable plate 10 to move downward. The fixed installation of the spring 2 17 between the movable plate 10 and the gear 2 12 and the sliding installation of the limit rod 14 in the movable plate 10 can be realized through the truncated cone groove on the movable plate 10. The spring 2 17 is sleeved on the outer side of the limit rod 14, which can prevent the spring 2 17 from being cheated during the compression and resetting process, thereby improving the service life of the limit rod 14. The opposite side of the movable plate 10 and the pressure plate 16 is smooth, so that the manhole cover body 2 between the movable plate 10 and the pressure plate 16 can be adjusted in position.

[0040] The grinding assembly includes a mounting plate 801 slidably connected to the top of the mounting seat 7, and one end of the mounting plate 801 close to the movable disk 10 is fixedly connected to three groups of six fixed plates 802, each group of two fixed plates 802 is slidably connected to the inside of a slider 805, and the two sliders 805 are internally rotatably connected to grinding rollers 803, and the lower surface of the bottom fixed plate 802 is slidably connected to a slide seat 804, and one end of the grinding roller 803 that penetrates into the slide seat 804 is fixedly connected to a worm gear 807, and the inner side of the slide seat 804 is slidably connected to a transmission rod 812, and the inner side of the slide seat 804 is rotatably connected to a worm 810, and the worm gear 807 and the worm 810 are meshed with each other, and the transmission rod 8 12 is slidably connected to the inner side of the worm 810, the grinding roller 803 is fixedly connected to the roller 811 at one end close to the movable disk 10, a circular groove is provided on the inner wall of the fixed plate 802 at one end close to the mounting plate 801, a spring 806 is fixedly connected between the slider 805 and the inner wall of the circular groove, a support plate 808 is fixedly connected to the lower surface of the bottom fixed plate 802, a limiting sleeve 809 is fixedly connected to the inner side of the mounting plate 801, a transmission rod 812 is rotatably connected to the support plate 808 and the inner side of the limiting sleeve 809, a sliding groove is provided on the outer wall of the limiting sleeve 809, a protrusion 813 is fixedly connected to the inner side of the worm 810, and the protrusion 813 is slidably connected to the upper sliding groove of the limiting sleeve 809;

[0041] The three groups of six fixed plates 802 can be fixedly installed through the mounting plate 801, so as to ensure that the grinding components can be adjusted in position synchronously. The grinding roller 803 can be rotated and installed by sliding the slider 805 on the inner side of the fixed plate 802, and it can be ensured that the grinding roller 803 can slide along the inner wall of the fixed plate 802 to adapt to burrs and protrusions of various specifications. The spring 806 between the grinding roller 803 and the slider 805 can push the grinding roller 803 so that the grinding roller 803 fits tightly on the outer peripheral surface of the manhole cover body 2, so as to ensure the stability of the grinding roller 803 during rotation and ensure the grinding quality. The worm wheel 807 and the worm 810 can be rotated and installed by the slide seat 804, and it can ensure that the worm wheel 807 and the worm 810 mesh with each other. The grinding roller 803 can be moved synchronously, and the transmission rod 812 can ensure the movement of the worm 810 at the bottom of the fixed plate 802, which will not affect the rotation of the worm 810 driven by the transmission rod 812. The lower surface of the manhole cover body 2 after stable clamping is in contact with the roller 811. When the mounting seat 7 drives the grinding assembly to rotate, the roller 811 will roll at the bottom of the manhole cover body 2 and push the grinding roller 803 to rotate, thereby grinding the outer peripheral surface of the manhole cover body 2 and ensuring the grinding quality. The transmission rod 812 can be stably installed through the support plate 808 and the limit sleeve 809, ensuring that the rotation of the roller 811 can drive the transmission rod 812 to rotate synchronously, and the rotating transmission rod 812 is slidably connected with the slide groove through the protrusion 813, ensuring that the transmission rod 812 drives the worm 810 to rotate synchronously.

[0042] The adjustment assembly includes a movable seat 901 slidably connected to the inner side of the mounting seat 7, a movable block 902 is slidably connected to the inner side of the movable seat 901, the mounting plate 801 and the movable block 902 are fixedly connected, the movable seat 901 is internally rotatably connected with a screw rod 903, the screw rod 903 is threadedly mounted on the inner side of the movable block 902, the inner side of the screw rod 903 is slidably connected with a driving rod 906 through a slide rail, the driving rod 906 is rotatably connected to the inner side of the mounting seat 7, one end of the driving rod 906 close to the movable disk 10 is fixedly connected with a gear 905, the mounting seat 7 is internally rotatably connected with an end face toothed disk 904, the end face toothed disk 904 and the gear 905 are meshed with each other, a connecting rod 907 is rotatably connected between the movable disk 10 and the movable seat 901, and a groove is provided on the lower surface of the mounting seat 7 for accommodating the connecting rod 907;

[0043] The movable block 902 can be installed through the movable seat 901, and the connection between the connecting rod 907 and the support block 15 can make the downward movement of the movable disk 10 drive the movable seats 901 at both ends to move toward each other, and the movable seat 901 drives the grinding assembly fixedly installed on the movable block 902 to move, and realizes the clamping of the outer peripheral surface of the manhole cover body 2 to prevent the manhole cover from being displaced or shaking during the grinding process, and to avoid uneven grinding or even damage to the manhole cover caused by position deviation. The threaded connection between the movable block 902 and the screw rod 903 allows the rotation of the screw rod 903 to adjust the position of the movable block 902 in the movable seat 901, so as to meet the grinding requirements of manhole cover bodies 2 with different diameters and improve the overall applicability of the device. Through the meshing connection between the gear 1 905 and the end face toothed disc 904, the rotation of the end face toothed disc 904 can drive the grinding assembly to achieve position adjustment and ensure the stability of the adjusted position.

[0044] In combination with the above preferred embodiments, the working principle of the present invention is as follows:

[0045] The initial state is as follows: the movable block 902 is located at the end of the movable seat 901 away from the support block 15, the movable seat 901 is in contact with the inner wall of the end of the mounting seat 7 away from the support block 15, the connecting rod 907 is in a horizontal state and is stored on the inner side of the mounting seat 7, the spring 2 17 and the spring 1 806 are both in an elastically stretched state, the slider 805 is in contact with the inner wall of the end of the fixed plate 802 close to the support block 15, the worm 810 is slidably connected to the outer side of the worm 810 through the protrusion 813, and the movable end of the hydraulic cylinder 4 is in a retracted state.

[0046] Adjustment according to the diameter of the manhole cover body 2: first, the operator needs to rotate the end face toothed disc 904 in the mounting seat 7, and the rotating end face toothed disc 904 drives the gear 1 905 meshing with it at both ends to rotate, and the rotating gear 1 905 drives the driving rod 906 fixedly connected to it to rotate, and the rotating driving rod 906 drives the screw rod 903 to rotate, and the screw rod 903 drives the movable block 902 threadedly connected to its outer side to move toward the movable disk 10, and the movement of the movable block 902 drives the mounting plate 801 fixedly connected thereto, and the mounting plate 801 drives the grinding roller 803 through the fixed plate 802 to achieve position adjustment, so as to meet the clamping and grinding of manhole cover bodies 2 of different diameters;

[0047] Manual loading: The operator lifts the manhole cover body 2 and then moves it along the guide seat 6 toward the grinding assemblies at both ends. When the manhole cover body 2 moves to a suitable position between the two sets of grinding assemblies, the movable end of the hydraulic cylinder 4 is started to move downward to drive the pressure plate 16. The pressure plate 16 presses on the manhole cover body 2 and pushes the manhole cover body 2 to move downward. The manhole cover body 2 moves downward to push the movable plate 10 to move downward to squeeze a number of springs 17 to contract, realizing the storage of elastic potential energy. At the same time, the movable seats 901 at both ends are pulled toward each other through the connecting rod 907. The movable seats 901 are moved by the movable blocks 902 with adjusted positions inside them. The movable mounting plate 801 moves, and the mounting plate 801 drives the grinding roller 803 to move through the fixed plate 802. If the center of gravity of the manhole cover body 2 is not directly above the support block 15 at this time, the six grinding rollers 803 at both ends moving toward each other will push the manhole cover body 2 to move between the movable plate 10 and the pressure plate 16, so that the center of gravity of the manhole cover body 2 is coaxial with the center of gravity of the support block 15. Finally, when the pressure plate 16 presses the manhole cover body 2 onto the support block 15, the positioning and clamping of the manhole cover body 2 on the support seat 1 is completed, ensuring the quality of the grinding assembly grinding the outer peripheral surface of the manhole cover body 2, and making the roller 811 fit with the lower surface of the manhole cover body 2;

[0048] Grinding the outer circumference of the manhole cover body 2: the operator starts the motor 11 through the external controller, so that the output shaft of the motor 11 drives the gear three 13 to rotate. Since the gear three 13 and the gear two 12 are meshed and connected, the gear three 13 drives the gear three 13 and several limit rods 14 fixedly connected to the gear three 13 to rotate synchronously. The rotating limit rod 14 drives the movable disk 10 slidably connected to its outer side to rotate. The rotating movable disk 10 drives the mounting seat 7 to rotate through the guide rail. The rotating mounting seat 7 drives the movable seat 901 inside it to rotate synchronously. The rotating movable seat 901 drives the mounting plate 801 to rotate through the movable block 902. The rotating mounting plate 801 drives the grinding roller 803 to rotate around the outer circumference of the manhole cover body 2 through the fixed plate 802. Since the roller 811 is in contact with the lower surface of the manhole cover body 2, the grinding roller 803 is rotated on the mounting seat 7. The transmission rod 812 that rotates around the outer circumference of the manhole cover body 2 drives the roller 811 to roll on the lower surface of the manhole cover body 2. The rolling transmission rod 812 drives the worm 810 to rotate through the protrusion 813. The rotating worm 810 drives the grinding roller 803 to rotate through the worm wheel 807 meshing with it. The rotating grinding roller 803 can further improve the grinding effect on the outer circumference of the manhole cover body 2. During the grinding process, the sliding of the grinding roller 803 in the fixed plate 802 can adapt to various specifications of protrusions or burrs. In this way, larger protrusions and burrs can be quickly removed under the sequential grinding action of the grinding roller 803. In addition, by using grinding rollers 803 designed with different mesh sizes, it is possible to more quickly meet the grinding requirements of the manhole cover body 2, which greatly improves the grinding efficiency while also improving the grinding quality.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0050] 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. An automatic grinding machine for a manhole cover, comprising a support base (1) and a manhole cover body (2), characterized in that: The upper surface of the support seat (1) is fixedly connected to a mounting frame (5), the top inner wall of the mounting frame (5) is fixedly connected to a motor (11), the output end of the motor (11) passes through the mounting frame (5) and is fixedly connected to a gear three (13), the top of the mounting frame (5) is rotatably connected to a gear two (12), the gear two (12) and the gear three (13) are meshed with each other, the upper surface of the gear two (12) is evenly fixedly connected to limit rods (14) in a ring array, the tops of a plurality of the limit rods (14) are slidably connected to the same movable disk (10), the outer side of the movable disk (10) is slidably connected to a mounting seat (7) via a guide rail, the interior of the mounting seat (7) is symmetrically provided with adjustment components, and the top of the mounting seat (7) is symmetrically provided with a grinding component; The grinding assembly comprises a mounting plate (801) slidably connected to the top of the mounting seat (7); one end of the mounting plate (801) close to the movable disk (10) is fixedly connected to three groups of six fixed plates (802); each group of two fixed plates (802) is slidably connected to the inside of a slider (805); the two sliders (805) are rotatably connected to the inside of a grinding roller (803); the lower surface of the fixed plate (802) at the bottom is slidably connected to a slide seat (804); One end of the grinding roller (803) passing through the slide seat (804) is fixedly connected to a worm wheel (807), the inner side of the slide seat (804) is slidably connected to a transmission rod (812), the interior of the slide seat (804) is rotatably connected to a worm (810), the worm wheel (807) and the worm (810) are meshed with each other, the transmission rod (812) is slidably connected to the inner side of the worm (810), and one end of the grinding roller (803) close to the movable disk (10) is fixedly connected to a roller (811); The adjustment assembly comprises a movable seat (901) slidably connected to the inner side of the mounting seat (7), the inner side of the movable seat (901) is slidably connected to a movable block (902), the mounting plate (801) and the movable block (902) are fixedly connected, the movable seat (901) is internally rotatably connected to a lead screw (903), the lead screw (903) is threadedly mounted on the inner side of the movable block (902), the inner side of the lead screw (903) is slidably connected to a drive rod (906) via a slide rail, the drive rod (906) is rotatably connected to the inner side of the mounting seat (7), one end of the drive rod (906) close to the movable disk (10) is fixedly connected to a gear 1 (905), the mounting seat (7) is internally rotatably connected to an end face toothed disk (904), the end face toothed disk (904) and the gear 1 (905) are meshed with each other.

2. The automatic grinding machine for manhole covers according to claim 1, characterized in that: The top of the support seat (1) is fixedly connected to a support frame (3), the top of the support frame (3) is fixedly mounted with a hydraulic cylinder (4), the movable end of the hydraulic cylinder (4) passes through the support frame (3) and is fixedly connected to a pressure plate (16), the top of the mounting seat (7) is fixedly connected to a guide seat (6), and the upper surface of the mounting frame (5) is fixedly connected to a support block (15) that passes through a movable plate (10) and gear 2 (12).

3. The automatic grinding machine for a manhole cover according to claim 2, characterized in that: A circular groove is provided on the inner wall of one end of the fixing plate (802) close to the mounting plate (801), and a spring 1 (806) is fixedly connected between the sliding block (805) and the inner wall of the circular groove.

4. The automatic grinding machine for a manhole cover according to claim 2, characterized in that: The lower surface of the fixing plate (802) at the bottom is fixedly connected to a support plate (808), the inner side of the mounting plate (801) is fixedly connected to a limiting sleeve (809), and the transmission rod (812) is rotatably connected to the inner side of the support plate (808) and the limiting sleeve (809).

5. The automatic grinding machine for a manhole cover according to claim 4, characterized in that: The outer wall of the limiting sleeve (809) is provided with a sliding groove, the inner side of the worm (810) is fixedly connected with a protrusion (813), and the protrusion (813) is slidably connected in the sliding groove on the limiting sleeve (809).

6. The automatic grinding machine for a manhole cover according to claim 3, characterized in that: A second spring (17) is fixedly connected between the movable plate (10) and the second gear (12). The second spring (17) is sleeved on the outside of the limiting rod (14). A truncated cone-shaped groove with a smaller top and a larger bottom is provided on the lower surface of the movable plate (10).

7. The automatic grinding machine for a manhole cover according to claim 3, characterized in that: A connecting rod (907) is rotatably connected between the movable disk (10) and the movable seat (901), and a groove for accommodating the connecting rod (907) is provided on the lower surface of the mounting seat (7).

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