A grinder

Abstract

The utility model relates to a kind of grinders. Grinder includes underframe mechanism, handrail mechanism and grinding mechanism, and the grinding mechanism includes power component and protective cover component and damping component, and the damping component is used to install grinding component. The handrail mechanism includes lower support, handrail and locking assembly, the handrail and the lower support are connected by rotating shaft, the lower support includes at least two clamping positions spaced distribution, the locking assembly is installed to the handrail, and is inserted with one clamping position and is locked, and the handrail is in storage posture and at least one working posture. Handrail mechanism can be folded, and the overall space can be reduced during storage and transportation. Locking assembly and lower support are inserted and locked, improve the adjustment convenience of handrail posture adjustment and hand pushing angle change. Grinding component is connected to power component by damping component, and damping component can realize damping and buffering of grinding component.

Description

Technical Field

[0001] This utility model relates to the field of polishing technology, and in particular to a grinding machine. Background Technology

[0002] Hand-operated floor grinders can polish ceramic tiles, marble, or other surfaces, improving their smoothness and gloss. For example, document CN223029268U discloses a floor grinder with a control handle.

[0003] However, the upright handles of current grinding machines are difficult to disassemble during transportation and storage, posing a significant technical problem of occupying large storage and transportation space. Furthermore, grinding floors presents the issue of uneven surface height; grinding the floor using grinding components results in large variations in the ground surface, affecting grinding quality and generating considerable noise. Therefore, improvements are needed. Utility Model Content

[0004] To overcome the problems existing in related technologies, this utility model provides a grinding machine to solve the technical problems of large storage and transportation space occupation, grinding components affecting grinding quality and high construction noise.

[0005] According to a first aspect of the present invention, a grinding machine is provided. The grinding machine includes a base frame mechanism, a handrail mechanism mounted on the base frame mechanism, and a grinding mechanism. At least a portion of the grinding mechanism protrudes from the upper surface of the base frame mechanism and is located away from the handrail mechanism. The grinding mechanism includes a power component located on the upper part of the base frame mechanism and a protective cover component and a shock-absorbing component located on the lower part of the base frame mechanism. The shock-absorbing component is used to mount the grinding component.

[0006] The handrail mechanism includes a lower support, a handrail frame, and a locking component. The handrail frame and the lower support are connected by a rotating shaft. The lower support includes at least two intermittently distributed snap-fit ​​positions. The locking component is installed on the handrail frame and is inserted and locked to one of the snap-fit ​​positions. The handrail frame is in a retracted posture and at least one working posture.

[0007] In one embodiment, the locking assembly includes a mounting base fixed to the handrail and a pin that is movably telescopic to the mounting base, with at least a portion of the pin inserted into one of the locking positions.

[0008] In one embodiment, the armrest includes a mounting cavity, a guide, and at least one protruding drive handle. The mounting cavity is used to mount a control box, the cable of which passes through the guide and is electrically connected to the grinding mechanism.

[0009] In one embodiment, the lower support includes a frame and a lever portion located at the end of the frame. The lever portion has an arc-shaped curved surface and is provided with a plurality of insertion holes. The handrail slides along the arc-shaped curved surface, and the locking component is inserted into one of the insertion holes.

[0010] In one embodiment, the lower support includes a conduit installed on the frame body and a support base located at the bottom. The support base protrudes from the base frame mechanism, and a support groove is provided on the top of the support base. The conduit faces the support groove.

[0011] The grinder also includes a negative pressure mechanism, the suction pipe of which passes through the conduit and the base frame mechanism and is connected to the protective cover assembly, with part of the suction pipe mounted on the support groove.

[0012] In one embodiment, the base frame mechanism includes a protruding tubular protrusion, a portion of the shock-absorbing component is located within the tubular protrusion, an air extraction space is formed between the shock-absorbing component and the wall of the tubular protrusion, and the negative pressure mechanism is connected to the tubular protrusion.

[0013] In one embodiment, the damping assembly includes an upper connecting seat, a lower connecting seat, and a damping block. The upper connecting seat is mounted on the output shaft of the power assembly. A plurality of first fasteners pass through the damping block after bypassing the upper connecting seat and connect to the lower connecting seat. A plurality of second fasteners pass through the damping block after bypassing the lower connecting seat and connect to the upper connecting seat. The first fasteners and second fasteners are alternately distributed.

[0014] In one embodiment, the protective cover assembly is rotatably connected to the base frame mechanism.

[0015] In one embodiment, the protective cover assembly includes a cover body, a dustproof component mounted on the cover body, and guide wheels. A lateral opening is provided on one side of the cover body, and the guide wheels are distributed on both sides of the lateral opening. The rotational surface of the grinding component is tangent to or partially extends beyond the plane where the lateral opening is located.

[0016] In one embodiment, the protective shield assembly includes a patch removably mounted to the lateral opening.

[0017] The technical solution provided by the embodiments of this utility model can include the following beneficial effects: the handrail mechanism is foldable, which can reduce the overall space during storage and transportation. The locking component and the lower bracket are plugged in and locked, which improves the convenience of adjusting the posture of the handrail frame and the adjustment of the push angle. The grinding component is connected to the power component through the shock absorption component, which can realize the shock absorption and buffering of the grinding component. The adaptive adjustment and micro-vibration buffering of the shock absorption component greatly improves the grinding quality of the grinding component and reduces construction noise. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0019] Figure 1 This is a schematic diagram illustrating the use of a grinding machine according to one embodiment.

[0020] Figure 2 This is a schematic diagram showing the folded state of a grinding machine according to one embodiment.

[0021] Figure 3 This is an enlarged schematic diagram showing the rotating connection between the lower support and the handrail according to one embodiment.

[0022] Figure 4 This is a partial cross-sectional schematic diagram illustrating the grinding mechanism located in the base frame mechanism according to one embodiment.

[0023] Figure 5 This is an exploded schematic diagram of a shock-absorbing assembly according to one embodiment.

[0024] Figure 6 This is a schematic diagram illustrating a shock-absorbing assembly and a protective cover assembly according to one embodiment.

[0025] In the figure, the components are: lower bracket 10; rotating shaft 11; conduit 12; actuating part 13; insertion hole 131; elastic layer 132; support base 14; frame 15; handrail 20; mounting cavity 21; control box 22; drive handle 23; guide 24; locking assembly 30; insertion pin 31; fixed base 32; grinding mechanism 40; protective cover assembly 41; cover 411; guide wheel 412; dustproof component 413; side opening 414; power assembly 42; shock absorption assembly 43; shock absorption block 431; through hole 4311; buffer boss 4312; upper connecting seat 432; clearance notch 4321; lower connecting seat 433; first fastener 434; second fastener 435; grinding assembly 44; base frame mechanism 50; negative pressure mechanism 60; and suction pipe 61. Detailed Implementation

[0026] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] like Figures 1 to 3 As shown, this utility model provides a grinding machine, which includes a base frame mechanism 50, a handrail mechanism mounted on the base frame mechanism 50, and a grinding mechanism 40. The grinding mechanism 40 is used to mount a grinding assembly 44. At least a portion of the grinding mechanism 40 protrudes from the upper surface of the base frame mechanism 50 and is located away from the handrail mechanism. The handrail mechanism and the grinding mechanism 40 are located at opposite ends of the base frame mechanism 50, with the handrail mechanism protruding from the base frame mechanism 50 for hand-held movement.

[0028] The grinding mechanism 40 includes a power assembly 42 located on the upper part of the base mechanism 50 and a protective cover assembly 41 and a shock absorption assembly 43 located on the lower part of the base mechanism 50. The shock absorption assembly 43 is used to mount the grinding assembly 44. The shock absorption assembly 43 and the grinding assembly 44 are located inside the protective cover assembly 41. The grinding assembly 44 can use grinding parts such as grinding wheels, polishing discs, grinding discs, and felt wheels, and can achieve surface grinding and / or polishing.

[0029] The damping component 43 is a planar elastic deformation component that can buffer and balance vibration from any angle in the circumference. The grinding component 44 is connected to the power component 42 through the damping component 43. The damping component 43 can realize the damping and buffering of the grinding component 44. The adaptive adjustment and micro-vibration buffering of the damping component 43 greatly improves the grinding quality of the grinding component 44 and reduces construction noise.

[0030] The handrail mechanism includes a lower support 10, a handrail frame 20, and a locking component 30. The handrail frame 20 and the lower support 10 are connected by a rotating shaft 11. The handrail frame 20 can rotate relative to the lower support 10 to be at different angles, which can accommodate people of different heights and reduce the storage volume.

[0031] The lower support 10 includes at least two spaced-apart snap-fit ​​positions. A locking component 30 is mounted on the handrail frame 20 and engages with one of the snap-fit ​​positions for locking. The handrail frame 20 is in a retracted position and at least one working position. The locking component 30 is inserted into the snap-fit ​​position to lock the handrail frame 20 in the corresponding position and angle of the lower support 10, thereby maintaining an accurate installation position. The locking component 30 and the lower support 10 are engaged and locked, improving the ease of adjusting the posture of the handrail frame 20 and changing the hand-push angle.

[0032] The handrail 20 is folded towards the power component 42 in a stowed position, with its end close to or partially against the top of the power component 42. This foldable handrail mechanism reduces overall space during storage and transportation.

[0033] In one embodiment, the locking assembly 30 includes a fixed base 32 fixed to the handrail frame 20 and a pin 31 that is movably telescopically connected to the fixed base 32, with at least a portion of the pin 31 inserted into one of the locking positions. The handrail frame 20 adopts a frame structure 15, and the handrail frame 20 is provided with a transverse mounting plate, which is parallel to the axis of the rotation shaft 11. The fixed base 32 is fixedly mounted on the mounting plate, and the pin 31 is telescopically connected to the fixed base 32, with the centerline of the pin 31 perpendicular to the axis of the rotation shaft 11.

[0034] The pin 31 is inserted into one of the snap-fit ​​positions. The lower support 10 includes a frame 15 and a toggle part 13 located at the end of the frame 15. The toggle part 13 has an arc-shaped surface and is provided with a plurality of insertion holes 131. The handrail 20 slides along the arc-shaped surface and the locking component 30 is inserted into one of the insertion holes 131.

[0035] At least a portion of the mounting plate slides into the curved surface to improve the connection stability between the handrail frame 20 and the lower support 10. Preferably, the mounting plate is configured with a curved surface to adapt to the curved surface. Preferably, the mounting plate faces the curved surface, and the surface of the curved surface is fitted with an elastic layer 132, so that the rotation of the handrail frame 20 and the lower support 10 has a suitable damping force, thereby improving the rotation effect.

[0036] The actuating part 13 is curved, and the center line of the curved surface coincides with the center line of the rotating shaft 11. The actuating part 13 can expand the support of the lower support 10 on the handrail frame 20, improve the local structural strength, and expand the setting range of the locking position.

[0037] In one embodiment, the handrail 20 includes a mounting cavity 21, a guide 24, and at least one protruding drive handle 23. The mounting cavity 21 is used to mount a control box 22, and the cable of the control box 22 passes through the guide 24 and is electrically connected to the grinding mechanism 40. The handrail 20 is a rigid structural component formed from sheet metal and / or tubing. The drive handles 23 protrude from the operating end of the handrail 20, preferably two, to facilitate push-pull operation.

[0038] The mounting cavity 21 is located on the handrail frame 20, near the operating end of the handrail frame 20. The control box 22 is embedded in or detachably mounted in the mounting cavity 21, thereby enabling convenient assembly and disassembly and improving the convenience of electrical control operation.

[0039] The guide 24 can be made of tubing or plate with holes. The guide 24 serves as a local reinforcement structure for the handrail frame 20 and also functions as a cable guide and positioning device. This can improve the constraint of the grinding machine on the wire harness and enhance the neatness of the wire harness.

[0040] In one embodiment, the lower support 10 includes a conduit 12 mounted on the frame 15 and a support base 14 located at the bottom. The support base 14 protrudes from the base frame mechanism 50, and a support groove is provided on the top of the support base 14. The conduit 12 faces the support groove. The support base 14 is connected to the base frame mechanism 50, and the frame 15 extends obliquely from the support base 14, with the end of the frame 15 away from the grinding mechanism 40. Optionally, the support base 14 and the frame 15 are welded into an integral structure to form a high overall structural strength; or, the support base 14 and the frame 15 are detachably connected so that they can be installed independently, improving assembly convenience.

[0041] The conduit 12 is welded and fixed to the frame 15 to improve the local structural strength of the frame 15. Optionally, the frame 15 includes two side plates arranged opposite each other, and the conduit 12 is welded to the two side plates.

[0042] like Figures 4 to 6 As shown, the grinder also includes a negative pressure mechanism 60. The suction pipe 61 of the negative pressure mechanism 60 passes through the conduit 12 and the base frame mechanism 50 and is connected to the protective cover assembly 41. Part of the suction pipe 61 is mounted in the support groove. As a suction component, the negative pressure mechanism 60 can create a low-pressure environment inside the protective cover assembly 41, thereby extracting the dust generated by the grinding component 44 and preventing dust from scattering.

[0043] Furthermore, the base frame mechanism 50 includes a protruding tubular protrusion, with a portion of the shock-absorbing component 43 located within the tubular protrusion. An air extraction space is formed between the shock-absorbing component 43 and the wall of the tubular protrusion. The negative pressure mechanism 60 is connected to the tubular protrusion. The suction pipe 61 of the negative pressure mechanism 60 is connected to the tubular protrusion and is locked externally using a clamp structure, ensuring good sealing at the joint and facilitating easy assembly.

[0044] Preferably, the tubular protrusion is located at the lower part of the base frame mechanism 50 so that the connection position of the negative pressure mechanism 60 is close to the grinding surface, which greatly improves the dust extraction efficiency.

[0045] The grinding mechanism 40 includes a power component 42, a shock-absorbing component 43, and a protective cover assembly 41. The protective cover assembly 41, consisting of a cover body 411, is mounted on the lower part of the base frame mechanism 50, and an internal space is formed within the protective cover assembly 41. The power component 42 is mounted above the base frame mechanism 50, and its output shaft passes through the base frame mechanism 50 and the protective cover assembly 41, and is assembled and connected to the shock-absorbing component 43. The grinding component 44 is mounted on the shock-absorbing component 43, and the shock-absorbing component 43 and the grinding component 44 are located within the internal space of the protective cover assembly 41.

[0046] The damping component 43 achieves vibration reduction while maintaining the stability of the grinding surface, enabling the grinding component 44 to perform micro-vibration grinding. The grinding component 44 can adaptively grind the construction surface to a preset surface that meets the adjustment, greatly improving the quality of ground construction.

[0047] The damping assembly 43 includes an upper connecting seat 432, a lower connecting seat 433, and a damping block 431. The upper connecting seat 432 is installed on the output shaft of the power assembly 42. Multiple first fasteners 434 pass through the damping block 431 after bypassing the upper connecting seat 432 and are connected to the lower connecting seat 433. Multiple second fasteners 435 pass through the damping block 431 after bypassing the lower connecting seat 433 and are connected to the upper connecting seat 432. The first fasteners 434 and the second fasteners 435 are alternately distributed.

[0048] The upper connecting seat 432 and the lower connecting seat 433 are rigid structural components, while the damping block 431 is an annular elastic structural component. The first fastener 434 and the second fastener 435 are long bolts. The damping block 431 has multiple through holes 4311 spaced apart, with the through holes 4311 perpendicular to the opposite end faces of the damping block 431. The first fastener 434 and the second fastener 435 are alternately distributed. The first fastener 434 fixes the damping block 431 and the lower connecting seat 433, and the second fastener 435 fixes the damping block 431 and the upper connecting seat 432. Accordingly, the damping block 431 can vibrate while maintaining the stable connection between the upper connecting seat 432 and the lower connecting seat 433.

[0049] The damping block 431 can be made of rubber material. Preferably, the damping block 431 is annular. Preferably, buffer bosses 4312 are provided at both ends of the through hole 4311, and the upper connecting seat 432 and the lower connecting seat 433 abut against the buffer bosses 4312. Furthermore, the thickness of the damping block 431 is greater than 40mm, so as to satisfy the damping effect while maintaining the steady pressure movement of the grinding assembly 44, keeping the grinding surface in a parallel state, and timely eliminating the vibration generated during the grinding process.

[0050] Preferably, the upper connecting seat 432 and the lower connecting seat 433 are provided with clearance notches 4321. The clearance notch 4321 of the upper connecting seat 432 avoids the end of the first fastener 434, and the clearance notch 4321 of the lower connecting seat 433 avoids the end of the second fastener 435. The clearance notches can allow tools such as sleeves to pass through, facilitating the assembly and disassembly of the first fastener 434 and the second fastener 435.

[0051] More preferably, the lower connecting seat 433 is provided with an assembly hole, and the grinding component 44 is detachably connected to the assembly hole to achieve quick assembly and disassembly.

[0052] In one embodiment, the protective cover assembly 41 is rotatably connected to the base frame mechanism 50. The protective cover assembly 41 has a cover body 411 structure. The protective cover assembly 41 and the base frame mechanism 50 are rotatable, while the grinding assembly 44 rotates around the central axis, which can realize planar grinding and side edge and corner grinding, greatly improving grinding flexibility.

[0053] Optionally, the protective cover assembly 41 is configured as a circular cover structure or a polygonal cover structure, with an outwardly protruding snap ring at the end of the tubular protrusion. The protective cover assembly 41 is fitted onto the tubular protrusion and moves up and down along the tubular protrusion. The lower end of the protective cover assembly 41 is provided with an movable surface that fits against or is close to the grinding surface to form a closed grinding construction space.

[0054] In a preferred embodiment, the protective cover assembly 41 includes a cover body 411, a dustproof component 413 mounted on the cover body 411, and a guide wheel 412. The cover body 411 is configured as an annular thin-walled structure with a hollow interior to accommodate the grinding assembly 44. The dustproof component 413 is mounted on the cover body 411 and surrounds the opening of the cover body 411, thereby forming a flexible contact between the protective cover assembly 41 and the ground, preventing grinding dust from overflowing. Optionally, the dustproof component 413 may be configured as a rubber ring or a brush with tufted bristles.

[0055] Furthermore, a lateral opening 414 is provided on one side of the cover 411. The lateral opening 414 is an open structure that allows for grinding of the corners of the building. Furthermore, guide wheels 412 are distributed on both sides of the lateral opening 414, with the plane of the guide wheels 412 tangent to the plane of the lateral opening 414; alternatively, the guide wheels 412 slightly extend beyond the plane of the lateral opening 414 to guide the cover 411 to translate along a straight wall surface, achieving accurate corner grinding. Optionally, the protective cover assembly 41 includes a patch that is detachably connected to the cover 411 to close the lateral opening 414.

[0056] More preferably, the guide wheel 412 is movably connected to the cover 411, and the height of the guide wheel 412 above the plane of the lateral opening 414 can be adjusted, thereby adapting to the lateral spacing grinding requirements of different straight wall surfaces. For example, the guide wheel 412 is mounted to the side of the cover 411 by a stud to form a lateral position adjustment.

[0057] The rotating surface of the grinding component 44 is tangent to or partially extends beyond the plane where the side opening 414 is located, thereby enabling the grinding of the edges and corners of the straight wall surface, with good grinding effect at the corners.

[0058] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A grinding machine, comprising a base frame mechanism, a handrail mechanism mounted on the base frame mechanism, and a grinding mechanism, wherein at least a portion of the grinding mechanism protrudes from the upper surface of the base frame mechanism and is located away from the handrail mechanism, characterized in that, The grinding mechanism includes a power assembly located on the upper part of the base frame mechanism and a protective cover assembly and a shock absorption assembly located on the lower part of the base frame mechanism. The shock absorption assembly is used to mount the grinding assembly. The handrail mechanism includes a lower support, a handrail frame, and a locking component. The handrail frame and the lower support are connected by a rotating shaft. The lower support includes at least two intermittently distributed snap-fit ​​positions. The locking component is installed on the handrail frame and is inserted and locked to one of the snap-fit ​​positions. The handrail frame is in a retracted posture and at least one working posture.

2. The grinding machine according to claim 1, characterized in that, The locking assembly includes a fixed base fixed to the handrail and a pin that is movably telescopic to the fixed base, with at least a portion of the pin inserted into one of the locking positions.

3. The grinding machine according to claim 1, characterized in that, The handrail includes a mounting cavity, a guide, and at least one protruding drive handle. The mounting cavity is used to mount a control box, and the cable of the control box passes through the guide and is electrically connected to the grinding mechanism.

4. The grinding machine according to claim 1, characterized in that, The lower support includes a frame and a lever part located at the end of the frame. The lever part has an arc-shaped curved surface and is provided with multiple insertion holes. The handrail slides along the arc-shaped curved surface, and the locking component is inserted into one of the insertion holes.

5. The grinding machine according to claim 4, characterized in that, The lower support includes a conduit installed on the frame and a support base located at the bottom. The support base protrudes from the base frame mechanism, and a support groove is provided on the top of the support base. The conduit faces the support groove. The grinder also includes a negative pressure mechanism, the suction pipe of which passes through the conduit and the base frame mechanism and is connected to the protective cover assembly, with part of the suction pipe mounted on the support groove.

6. The grinding machine according to claim 5, characterized in that, The base frame mechanism includes a protruding tubular protrusion, a portion of the shock-absorbing component is located within the tubular protrusion, an air extraction space is formed between the shock-absorbing component and the wall of the tubular protrusion, and the negative pressure mechanism is connected to the tubular protrusion.

7. The grinding machine according to claim 1, characterized in that, The shock absorption assembly includes an upper connecting seat, a lower connecting seat, and a shock absorption block. The upper connecting seat is installed on the output shaft of the power assembly. Multiple first fasteners pass through the upper connecting seat and then through the shock absorption block to connect to the lower connecting seat. Multiple second fasteners pass through the lower connecting seat and then through the shock absorption block to connect to the upper connecting seat. The first and second fasteners are distributed alternately.

8. The grinding machine according to claim 1, characterized in that, The protective cover assembly is rotatably connected to the base frame mechanism.

9. The grinding machine according to claim 8, characterized in that, The protective cover assembly includes a cover body, a dustproof component installed on the cover body, and guide wheels. A lateral opening is provided on one side of the cover body, and the guide wheels are distributed on both sides of the lateral opening. The rotating surface of the grinding component is tangent to or partially extends beyond the plane where the lateral opening is located.

10. The grinding machine according to claim 9, characterized in that, The protective shield assembly includes a patch that can be detachably mounted to the side opening.

Images