A hand-pushed lug grinding machine

Abstract

The present invention discloses a hand-push type lifting lug grinder, comprising a bearing platform, a walking mechanism, a grinding mechanism, a grinding limit device, and a hand-push frame. The bearing platform is provided with a grinding mechanism, and a hand-push frame is provided at one end of the upper portion of the bearing platform. The grinding mechanism comprises a grinding spindle, a grinding wheel, a transmission part, and a drive part. The drive part drives the grinding spindle to rotate through the transmission part, and the rim of the grinding wheel forms a supported contact grinding with the mother plate. The grinding limit device is provided on the bearing platform to prevent the grinding wheel from excessively grinding the mother plate. The hand-push type lifting lug grinder of the present invention utilizes a grinding body with a seesaw-like structure, which can save effort in controlling the automatic lifting of the grinding wheel and can facilitate the control of the grinding pressure of the grinding wheel on the base of the lifting lug. The grinding limit device can control the degree of grinding of the lifting lug by the grinding wheel. When the grinding wheel contacts the mother plate, under the action of the grinding limit device, the grinding wheel cannot further increase the grinding depth, thereby not damaging the mother plate.

Description

Technical Field

[0001] The invention relates to the technical field of grinding machines, in particular to a hand-push type lug grinding machine. Background Art

[0002] Based on the hull's structural characteristics, shipyard production conditions, and construction process requirements, the hull is rationally divided into several sections, each forming an independent assembly unit. Based on external shape, these sections can be divided into flat sections, curved sections, and three-dimensional sections; based on location, they can be divided into deck sections, side sections, bulkhead sections, bottom sections, and bow and stern sections. Because flat sections are relatively simple, some factories have established flat section assembly lines to improve production efficiency. Curved sections are more complex and are typically constructed on a jig. However, by turning the sections over, most welding can be performed in a prone position, improving assembly and welding quality and efficiency. To meet the requirements of pre-outfitting processes, various equipment, piping, cables, and outfitting components within the sections can be pre-installed after the section's structural completion, forming a more complete assembly unit before being shipped for slipway assembly, shortening the shipbuilding cycle.

[0003] Lifting lugs are used extensively in the construction of ship sections. Cranes use the lugs to lift various hull components into place for welding and assembly. There are also many lifting lugs distributed on the bottom plate and deck of the hull section. After the welding on the slipway is completed, they need to be cut off as required. Usually, the lugs are removed by gas cutting. Gas cutting cannot completely remove the roots, and the cutting surface of gas cutting is not smooth. In order not to damage the deck mother material, the roots of the lugs are usually left when they are cut. The roots of the lugs need to be grinded off. This not only avoids damaging the hull mother plate during cutting, but also can make the plate at the lug position smoother by grinding.

[0004] Currently, handheld angle grinders are commonly used for grinding, which takes a long time and requires a lot of work. In addition, the grinding process also generates dust and noise. To address the above problems, a hand-pushed lug grinder has been developed and designed to replace manual work. Summary of the Invention

[0005] The purpose of the present invention is to solve the above technical problems and provide a hand-push lug grinding machine.

[0006] In order to achieve the above-mentioned object, the present invention adopts the following technical solution: a hand-push type lug grinding machine, comprising a carrying platform, a walking mechanism, a grinding mechanism, a grinding limit device, and a hand-push frame, wherein the carrying platform is provided with a grinding mechanism, and a hand-push frame is provided at one end of the upper end of the carrying platform;

[0007] A walking mechanism is provided at the bottom of the carrying platform, and the walking mechanism at least includes main supporting wheels;

[0008] The grinding mechanism includes a grinding spindle, a grinding wheel, a transmission part, and a driving part. The grinding spindle is rotatably connected to the bearing platform. A grinding wheel is provided at one end of the grinding spindle. The driving part drives the grinding spindle to rotate through the transmission part. The rim of the grinding wheel forms a supporting contact with the motherboard plate for grinding.

[0009] The grinding limit device is arranged on the bearing platform to prevent the grinding wheel from excessively grinding the mother board.

[0010] Furthermore, the walking mechanism also includes a secondary support wheel, the grinding spindle and the secondary support wheel are respectively arranged on the front and rear sides of the main support wheel, and the axle of the main support wheel is located below the line connecting the grinding spindle and the axle of the secondary support wheel, so that the bearing platform forms a seesaw structure with the main support wheel as the fulcrum. When the main support wheel and the secondary support wheel are on the ground, they are in a walking state, and when the main support wheel and the grinding wheel are on the ground, they are in a grinding state.

[0011] Furthermore, the auxiliary support wheel is located on the front side of the main support wheel, and the grinding spindle is located on the rear side of the main support wheel.

[0012] Furthermore, the driving part is arranged on the front side of the supporting platform and is located above the main support wheel and the auxiliary support wheel. The front setting of the driving part makes the overall center of mass of the grinder pass over the axle of the main support wheel, and in the static state, the front end is sunken and the rear end is raised.

[0013] Furthermore, the grinding limit device includes a tail vertical plate, a horizontal axis screw, and a longitudinal axis screw. The tail vertical plate is fixedly connected to the supporting platform. A screw hole is provided on the tail vertical plate. The horizontal axis screw is screwed through the screw hole. A clamping nut is screwed on the horizontal axis screw. A longitudinal axis nut is provided at the end of the horizontal axis screw. The longitudinal axis screw is screwed through the longitudinal axis nut. The longitudinal axis screw abuts against the motherboard plate and the main support wheel to form a suspended support for the grinding wheel.

[0014] Furthermore, a single pendulum type auxiliary support wheel is provided at the bottom of the carrying platform, and the walking mechanism includes a pendulum shaft, a pendulum arm, and a secondary shaft. The pendulum shaft is rotatably connected to the carrying platform, one end of the pendulum arm is fixedly connected to the pendulum shaft, and the other end is connected to a secondary shaft. Auxiliary support wheels are provided at both ends of the secondary shaft, and the height position of the secondary support wheel is controlled and adjusted by a grinding limit device.

[0015] Furthermore, the grinding limit device includes a swing arm, a sleeve, an adjusting screw, and an adjusting frame. One end of the swing arm is fixedly connected to the swing shaft, and the other end of the swing arm is hinged to the sleeve. An adjusting screw is threaded inside the sleeve, and the adjusting screw is rotatably connected and passes through the adjusting frame. A hand wheel is provided at the end of the adjusting screw, and both sides of the adjusting frame are hinged to the platform of the hand-pushing frame through ear seats.

[0016] Furthermore, the front end of the supporting platform is provided with an alignment mechanism for aligning the grinding position, and the alignment mechanism includes a rotating arm, a benchmark, and a roller. One end of the rotating arm is rotatably connected to the front end of the supporting platform, and a roller is provided at the lower front end of the benchmark. The benchmark is L-shaped and includes an insertion rod and a vertical rod. The insertion rod is arranged through the front end of the rotating arm, and a locking screw is screwed on the rotating arm to compress and fix the position of the insertion rod.

[0017] Furthermore, the grinding wheel is a coarse brown corundum grinding wheel.

[0018] Compared with the existing technology, the present invention has the following advantages: a hand-pushed lug grinder utilizes a seesaw-shaped grinding body, which can control the automatic lifting of the grinding wheel with relatively little effort, making it easier to control the grinding pressure of the grinding wheel on the base of the lug. A grinding limiter can control the degree of grinding of the lug by the grinding wheel. When the grinding wheel contacts the motherboard, the grinding limiter prevents the grinding wheel from increasing the grinding depth, thereby preventing damage to the motherboard. A protective cover is provided on the grinding wheel to effectively isolate dust and noise generated during grinding, effectively improving the efficiency of the grinding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a hand-push lug grinding machine embodiment 1 of the present invention Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of a hand-push lug grinding machine embodiment 1 of the present invention Figure 2 ;

[0021] Figure 3 A top view of a first embodiment of a hand-push lug grinding machine according to the present invention;

[0022] Figure 4 This is a schematic structural diagram of the main support wheel in the present invention;

[0023] Figure 5 This is a schematic structural diagram of the grinding limit device of the present invention;

[0024] Figure 6 This is the axonometric view of the second embodiment of a hand-push type lug grinding machine of the present invention. Figure 1 ;

[0025] Figure 7 This is the axonometric view of the second embodiment of a hand-push type lug grinding machine of the present invention. Figure 2 ;

[0026] Figure 8 This is an exploded view of a second embodiment of a hand-push lug grinding machine according to the present invention;

[0027] In the figure: 1. Carrying platform; 2. Walking mechanism; 3. Grinding mechanism; 4. Grinding limit device; 5. Hand push frame; 6. Main support wheel; 7. Grinding spindle; 8. Grinding wheel; 9. Transmission part; 10. Drive part; 11. Motherboard; 12. Auxiliary support wheel; 13. Tail vertical plate; 14. Horizontal axis screw; 15. Vertical axis screw; 16. Screw hole; 17. Pressing nut; 18. Vertical axis nut; 19. Swing shaft; 20. Swing rod; 21. Auxiliary shaft; 22. Swing arm; 23. Screw sleeve; 24. Adjusting screw; 25. Adjusting frame; 26. Handwheel; 27. Ear seat; 28. Alignment mechanism; 29. Rotating arm; 30. Marking pole; 31. Roller; 32. Insert rod; 33. Vertical rod; 34. Locking screw; 35. Protective cover; 36. Lifting ear. DETAILED DESCRIPTION

[0028] The technical solutions of the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] Example 1:

[0030] A hand-propelled lug grinding machine, such as Figure 1 As shown, it includes a carrying platform 1 and a walking mechanism 2. The entire grinder is based on the walking mechanism 2. A hand-pushing frame 5 is provided at one end of the upper part of the carrying platform 1. The hand-pushing frame 5 can be used to push and move the grinder, thereby avoiding the grinding operation of a hand-held angle grinder in the prior art. The grinding operation of a hand-held angle grinder is unstable and easily causes potholes in the grinding area, resulting in poor product quality. The present device utilizes the walking mechanism 2 to move the position, which has the advantage of easy operation. A grinding mechanism 3 and a grinding limit device 4 are provided on the carrying platform 1.

[0031] Specifically, such as Figure 1-3 As shown, the grinding mechanism 3 includes a grinding spindle 7, a grinding wheel 8, a transmission part 9, and a driving part 10. The grinding spindle 7 is rotatably connected and arranged on the carrying platform 1. A grinding wheel 8 is provided at one end of the grinding spindle 7. The driving part 10 drives the grinding spindle 7 to rotate through the transmission part 9. The driving part 10 in this embodiment can use an electric motor, a gasoline engine, or a diesel engine as a driving force. A driving pulley is provided at the output end of the driving part 10, and a driven pulley is provided on the grinding spindle 7. The two pulleys are transmitted through the transmission part 9. Specifically, a transmission belt can be used to be sleeved on the driving pulley and the driven pulley for transmission, so that the grinding spindle 7 rotates, thereby driving the grinding wheel 8 to rotate and perform a flattening operation, as shown in FIG. Figure 1 As shown, when performing the flattening operation, the hand-pushing frame 5 is used to control the entire machine body to move forward and press down the grinding wheel 8 to grind the root of the lifting ear on the motherboard, so that the rim below the grinding wheel 8 forms a supporting contact grinding with the motherboard plate 11; in actual use, the grinding wheel 8 can be a coarse brown corundum grinding wheel.

[0032] Specifically, the grinding machine in this embodiment has a walking mode and a grinding operation mode. The two modes are switched by controlling the tilt direction of the carrying platform 1, which has the advantage of being easy to control. In this embodiment, a walking mechanism 2 is provided at the bottom of the carrying platform 1, and the walking mechanism 2 includes a main support wheel 6 and an auxiliary support wheel 12; Figure 1-4 As shown, the axle of the main support wheel 6 is rotatably connected to the middle position of the carrying platform 1, and the main support wheels 6 are respectively provided at both ends of the axle, and the grinding spindle 7 and the auxiliary support wheel 12 are respectively provided on the front and rear sides of the main support wheel 6, the auxiliary support wheel 12 is located in front of the main support wheel 6, and the grinding spindle 7 is located in the rear side of the main support wheel 6; the carrying platform 1 forms a seesaw structure with the main support wheel 6 as the fulcrum, and the seesaw is used to form a change in the tilt direction of the carrying platform 1, specifically, as shown in FIG. Figure 1 As shown, the main support wheel 6 and the grinding wheel 8 are on the ground, which is the grinding operation mode. At this time, the auxiliary support wheel 12 on the front side is in a suspended state; Figure 2 As shown, the main support wheel 6 and the auxiliary support wheel 12 are on the ground. At this time, the grinding wheel 8 leaves the ground and is in walking mode, which can facilitate the movement of the position of the grinder; specifically, the axle of the main support wheel 6 is located below the line connecting the grinding spindle 7 and the axle of the auxiliary support wheel 12.

[0033] Furthermore, the driving unit 10 is arranged on the front side of the carrying platform 1 and is located above the main support wheel 6 and the auxiliary support wheel 12. The driving unit 10 is arranged in front so that the center of mass of the grinder passes over the axle of the main support wheel 6, and the front end is sunken and the rear end is tilted in the static state. In order to make the entire grinder more sensitive to the pressure on the grinding part during the grinding operation, the driving unit 10 with a relatively concentrated weight is moved forward and passed over the main support wheel 6, so that the entire grinder is in a state of Figure 2 As shown, the center of mass of the whole is close to the main support wheel 6, so that during the actual grinding operation, a small pressure is applied to the push frame 5 to form the whole as shown. Figure 1 In the grinding state shown, it can be understood that the center of mass at this time is still located in front of the main support wheel 6, so under the cylinder rod principle, the grinding wheel 8 has a tendency to automatically lift up, so when the motherboard plate 11 is ground flat, the grinding force can be controlled more accurately. For example, in the early stage of grinding, the exposed part of the lug is higher, and the pressure can be increased to increase the grinding speed. As it approaches the surface of the motherboard plate 11, the pressure can be reduced to slow down the grinding speed of the grinding wheel 8 to avoid damaging the motherboard surface during rapid grinding, so as to achieve an effect that is easy to control.

[0034] In this embodiment, a grinding limiter 4 may be provided to prevent the grinding wheel 8 from excessively grinding the motherboard 11. Figure 5As shown, the grinding limit device 4 is arranged at the tail of the supporting platform 1, which includes a tail upright plate 13, a transverse axis screw 14, and a longitudinal axis screw 15. The tail upright plate 13 is fixedly connected to the supporting platform 1, and a screw hole 16 is provided on the tail upright plate 13. The transverse axis screw 14 is screwed through the screw hole 16. A clamping nut 17 is screwed on the transverse axis screw 14. A longitudinal axis nut 18 is provided at the end of the transverse axis screw 14. The longitudinal axis screw 15 is screwed through the longitudinal axis nut 18. The longitudinal axis screw 15 abuts against the motherboard plate 11 and the main support wheel 6 to form a suspended support for the grinding wheel 8. In actual use, the tail vertical plate 13 is used to position the horizontal axis screw 14, and the horizontal axis screw 14 is further used to position the longitudinal axis screw 15. The horizontal axis screw 14 is firmly positioned on the tail vertical plate 13 after being tightened by the compression nut 17. It can be understood that the longitudinal axis nut 18 needs to be positioned in a horizontal state, so that the longitudinal axis screw 15 can be controlled to be set in a vertical state through the horizontal axis screw 14; the longitudinal axis screw 15 can be rotated to change the length of the longitudinal axis screw 15 extending downward, thereby controlling the distance between the supporting platform 1 and the motherboard plate 11, and then controlling the grinding depth of the grinding wheel 8 on the motherboard plate 11; in actual use, when grinding, During the process, the grinding wheel 8 is used for grinding support. At this time, the lower end of the longitudinal screw 15 does not contact the motherboard plate 11. As the grinding progresses, the lower end of the longitudinal screw 15 continues to move downward. When the grinding wheel 8 is about to be tangent to the surface of the motherboard plate 11, the longitudinal screw 15 just abuts against the motherboard plate 11, thereby limiting the grinding depth of the grinding wheel 8. It can be understood that due to the wear of the grinding wheel 8 during the grinding process, in order to cope with this problem, the longitudinal screw 15 in this embodiment can be rotated to adjust the limit of the grinding depth, thereby compensating for the loss of the grinding wheel 8, so that the grinding wheel 8 can always grind to the surface of the motherboard plate 11.

[0035] Furthermore, in this embodiment, a lifting lug 36 can be welded on the carrying platform 1, so that the grinding machine can be lifted and placed to the working position by using lifting equipment such as a gantry crane during use.

[0036] Example 2:

[0037] As another embodiment of the grinding machine, Figure 6-8 As shown, a single pendulum-type auxiliary support wheel 12 is provided at the bottom of the carrying platform 1. Different from the aforementioned embodiment, in which the auxiliary support wheel 12 is set at a fixed position, this embodiment utilizes a simple pendulum form so that the auxiliary support wheel 12 can rotate around the pendulum shaft 19 to adjust its position within a certain angle range, thereby changing the support height of the carrying platform 1, and further changing whether the grinding wheel 8 leaves or approaches the ground; and this device can be used to limit the grinding depth, that is, this embodiment combines the grinding limit device 4 and the auxiliary support wheel 12 into two structures.

[0038] like Figure 7、 8 As shown, the walking mechanism 2 includes a swing shaft 19, a swing rod 20, and a secondary shaft 21. The swing shaft 19 is rotatably connected to the supporting platform 1. One end of the swing rod 20 is fixedly connected to the swing shaft 19, and the other end is connected to the secondary shaft 21. The secondary shaft 21 is provided with secondary support wheels 12 at both ends. The height position of the secondary support wheels 12 is controlled and adjusted by the grinding limit device 4. In actual use, when the secondary support wheel 12 rotates to form a high-position support, the grinding wheel 8 is correspondingly suspended. At this time, the main support wheel 6 and the secondary support wheel 12 are on the ground, corresponding to the walking mode. When the secondary support wheel 12 rotates and retracts to form a suspended state, the grinding wheel 8 and the main support wheel 6 are on the ground at the same time, which corresponds to the grinding operation state. The suspended height of the secondary support wheel 12 is used as a limit for the grinding depth of the grinding wheel 8.

[0039] Specifically, the grinding limit device 4 includes a swing arm 22, a screw sleeve 23, an adjusting screw 24, and an adjusting frame 25. One end of the swing arm 22 is fixedly connected to the swing shaft 19, and the other end of the swing arm 22 is hinged to the screw sleeve 23. The adjusting screw 24 is threaded inside the screw sleeve 23. The adjusting screw 24 is rotatably connected and passes through the adjusting frame 25. A handwheel 26 is provided at the end of the adjusting screw 24. The two sides of the adjusting frame 25 are hinged to the platform of the hand-pushing frame body 5 through the ear seat 27. During use, the hand wheel 26 can be turned to rotate the adjusting screw 24, thereby pulling or pushing the screw sleeve 23 to move, and then the position of the auxiliary support wheel 12 on the other side can be controlled by rotating the swing arm 22. As the principle mentioned above, during actual use, the grinding depth can be adjusted in advance. Specifically, when in the moving state, the height position of the grinding wheel 8 can be gradually lowered by rotating the hand wheel 26 so that the lower wheel edge of the grinding wheel 8 also contacts the motherboard plate 11. At this time, the grinding wheel 8, the main support wheel 6, and the auxiliary support wheel 12 are in contact with the motherboard at the same time. This is defined as the deepest grinding state. The driving unit 10 is started to make the grinding wheel 8 grind along the position where the lifting ear is set, so that the grinding depth can be controlled so that the grinding wheel 8 will not damage the motherboard.

[0040] Furthermore, since the operator's line of sight is far away from the grinding wheel 8, in order to accurately grind at the position of the lifting ear, an alignment mechanism 28 is provided in this embodiment. The front end of the supporting platform 1 is provided with an alignment mechanism 28 for aligning the grinding position. The alignment mechanism 28 includes a rotating arm 29, a benchmark 30, and a roller 31. One end of the rotating arm 29 is rotatably connected to the front end of the supporting platform 1. The lower front end of the benchmark 30 is provided with a roller 31. The benchmark 30 is L-shaped and includes an insertion rod 32 and a vertical rod 33. The insertion rod 32 is arranged through the front end of the rotating arm 29, and a locking screw 34 is screwed on the rotating arm 29 to compress and fix the position of the insertion rod 32. In actual use, since the grinding wheel 8 is set on the outside of the grinder, the benchmark rod 30 needs to be set on the same side of the grinding wheel 8 and on the same straight line with it. When in use, the alignment mechanism 28 is rotated and extended forward, and the benchmark rod 30 is used to sweep over the place that needs to be polished. Specifically, the operator can tilt his head and use his sight to align the benchmark rod 30 with the position of the lifting ear, and slowly push the grinder forward. When the vertical rod 33 of the benchmark rod 30 sweeps over the grinding target position, the grinding wheel 8 can be accurately polished at the position of the lifting ear, thereby improving the accuracy of the grinding position.

[0041] In the two aforementioned embodiments, a protective cover is provided on the outer cover of the grinding wheel to isolate grinding chips and noise.

[0042] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A hand-push lug grinding machine, characterized in that: It comprises a bearing platform (1), a walking mechanism (2), a grinding mechanism (3), a grinding limit device (4), and a hand-pushing frame (5); the bearing platform (1) is provided with a grinding mechanism (3), and one end of the upper part of the bearing platform (1) is provided with a hand-pushing frame (5); A walking mechanism (2) is provided at the bottom of the carrying platform (1), and the walking mechanism (2) comprises at least main support wheels (6); The grinding mechanism (3) comprises a grinding spindle (7), a grinding wheel (8), a transmission part (9), and a driving part (10); the grinding spindle (7) is rotatably connected and arranged on the bearing platform (1); a grinding wheel (8) is provided at one end of the grinding spindle (7); the driving part (10) drives the grinding spindle (7) to rotate through the transmission part (9); the rim of the grinding wheel (8) forms a supporting contact grinding with the motherboard plate (11); The grinding limit device (4) is arranged on the bearing platform (1) and is used to prevent the grinding wheel (8) from excessively grinding the mother plate (11); The walking mechanism (2) further includes a secondary support wheel (12), the grinding spindle (7) and the secondary support wheel (12) are respectively arranged on the front and rear sides of the main support wheel (6), the axle of the main support wheel (6) is located below the connecting line of the axles of the grinding spindle (7) and the secondary support wheel (12), so that the bearing platform (1) forms a seesaw structure with the main support wheel (6) as the fulcrum, the main support wheel (6) and the secondary support wheel (12) are in a walking state when they touch the ground, and are in a grinding state when the main support wheel (6) and the grinding wheel (8) touch the ground; The auxiliary support wheel (12) is located on the front side of the main support wheel (6), and the grinding spindle (7) is located on the rear side of the main support wheel (6); The driving part (10) is arranged on the front side of the carrying platform (1) and is located above the main support wheel (6) and the auxiliary support wheel (12). The driving part (10) is arranged in front so that the center of mass of the grinding machine passes the axle of the main support wheel (6), and in a static state, the front end is sunken and the rear end is tilted; The grinding limit device (4) includes a tail upright plate (13), a transverse axis screw (14), and a longitudinal axis screw (15). The tail upright plate (13) is fixedly connected to the bearing platform (1). A screw hole (16) is provided on the tail upright plate (13). The transverse axis screw (14) is screwed through the screw hole (16). A clamping nut (17) is screwed on the transverse axis screw (14). A longitudinal axis nut (18) is provided at the end of the transverse axis screw (14). The longitudinal axis screw (15) is screwed through the longitudinal axis nut (18). The longitudinal axis screw (15) abuts against the motherboard plate (11) and the main support wheel (6) to form a suspended support for the grinding wheel (8).

2. A hand-push lug grinding machine, characterized in that: It comprises a bearing platform (1), a walking mechanism (2), a grinding mechanism (3), a grinding limit device (4), and a hand-pushing frame (5); the bearing platform (1) is provided with a grinding mechanism (3), and one end of the upper part of the bearing platform (1) is provided with a hand-pushing frame (5); A walking mechanism (2) is provided at the bottom of the carrying platform (1), and the walking mechanism (2) comprises at least main support wheels (6); The grinding mechanism (3) comprises a grinding spindle (7), a grinding wheel (8), a transmission part (9), and a driving part (10); the grinding spindle (7) is rotatably connected and arranged on the bearing platform (1); a grinding wheel (8) is provided at one end of the grinding spindle (7); the driving part (10) drives the grinding spindle (7) to rotate through the transmission part (9); the rim of the grinding wheel (8) forms a supporting contact grinding with the motherboard plate (11); The grinding limit device (4) is arranged on the bearing platform (1) and is used to prevent the grinding wheel (8) from excessively grinding the mother plate (11); A single pendulum-type auxiliary support wheel (12) is provided at the bottom of the carrying platform (1), and the walking mechanism (2) includes a pendulum shaft (19), a pendulum rod (20), and a secondary shaft (21). The pendulum shaft (19) is rotatably connected to the carrying platform (1), one end of the pendulum rod (20) is fixedly connected to the pendulum shaft (19), and the other end is connected to the secondary shaft (21). Auxiliary support wheels (12) are provided at both ends of the secondary shaft (21), and the height position of the secondary support wheel (12) is controlled and adjusted by a grinding limit device (4); The grinding limit device (4) comprises a swing arm (22), a screw sleeve (23), an adjusting screw (24), and an adjusting frame (25), wherein one end of the swing arm (22) is fixedly connected to the swing shaft (19), and the other end of the swing arm (22) is hinged to the screw sleeve (23), and the adjusting screw (24) is screwed in the screw sleeve (23), and the adjusting screw (24) is rotatably connected and passes through the adjusting frame (25), and a hand wheel (26) is provided at the end of the adjusting screw (24), and both sides of the adjusting frame (25) are hinged to the platform of the hand push frame body (5) through ear seats (27); The front end of the carrying platform (1) is provided with an alignment mechanism (28) for aligning the grinding position, and the alignment mechanism (28) includes a rotating arm (29), a benchmark (30), and a roller (31). One end of the rotating arm (29) is rotatably connected to the front end of the carrying platform (1), and the lower part of the front end of the benchmark (30) is provided with a roller (31). The benchmark (30) is L-shaped and includes an insertion rod (32) and a vertical rod (33). The insertion rod (32) is arranged through the front end of the rotating arm (29), and a locking screw (34) is screwed on the rotating arm (29) to press and fix the position of the insertion rod (32).

3. A hand-push lug grinding machine according to claim 2, characterized in that: The grinding wheel (8) is a coarse brown corundum grinding wheel.

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