A grinding machine and a working method thereof

Abstract

The present invention relates to a grinder, comprising a grinder body, a grinding disc is provided at the front bottom of the grinder body, a grinding head is built in the grinding disc, a dust collecting disc which gradually shrinks from front to back is provided at the rear of the grinding disc, the bottom of the dust collecting disc is open for dust collection, the top of the dust collecting disc is closed and connected with a dust collecting pipe of an external negative pressure device; a support frame for installing a front guide wheel is provided in front of the grinding disc, the support frame is detachably connected to the frame of the grinder body, and a slot is provided at one end of the support frame for vertically inserting the front guide wheel on the vertical plate surface of the frame for storage when the front guide wheel is not in use. The structure is simple.

Description

Technical Field

[0001] The invention relates to a grinding machine and a working method thereof. Background Art

[0002] The grinder is used for floor grinding. The front guide wheel is located in front of the grinder, and is used to contact the ground when the grinder is not grinding and moving, and to assist in movement. The front guide wheel needs to be stored when the grinder is grinding. After the traditional support frame and the frame are disassembled, it is difficult to put them on the frame in a stored state; dust collection is required after grinding. The dust collection structure design of the traditional grinder is unreasonable, and the dust collection effect is poor. Summary of the invention

[0003] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a grinding machine and a working method thereof, which have a simple structure and are convenient and efficient.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a grinder, including a grinder body, a grinding disc is provided at the front bottom of the grinder body, a grinding head is built in the grinding disc, a dust suction disc which gradually shrinks from front to back is provided at the rear of the grinding disc, the bottom surface of the dust suction disc is open for dust suction, the top surface of the dust suction disc is closed and connected to a dust suction pipe of an external negative pressure device; a support frame for installing a front guide wheel is provided in front of the grinding disc, the support frame is detachably connected to the frame of the grinder body, and a slot is provided at one end of the support frame for vertically inserting into the vertical plate surface of the frame for storage when the front guide wheel is not in use.

[0005] Preferably, the support frame is detachably connected to the frame of the grinding machine body via a latch.

[0006] Preferably, the support frame is in an "L" shape, with the vertical section at the bottom and the horizontal section at the top, the front guide wheel being installed at the bottom of the vertical section, and the slot being located at the end of the horizontal section; the horizontal section of the support frame is a square tube, and the end of the horizontal section is provided with a pin hole on the side of the slot; two connecting blocks are symmetrically fixed to the front wall of the vertical plate surface, and two pin holes are opened on the upper and lower parts of the two connecting blocks; the unreceived horizontal section of the support frame is in a horizontal state, and its pin hole is connected to the lower pin hole of the connecting block through a plug, and the end face of the horizontal section is facing the vertical plate surface; the received horizontal section of the support frame is in a vertical state, and its pin hole is connected to the upper pin hole of the connecting block through a plug; the length and width of the square tube are greater than the maximum distance between the two connecting blocks, and the two connecting blocks are inserted into the inside when connecting; one end of the plug is a large head, and after the other end passes through the pin hole, it is positioned by an R-shaped pin passing through the small hole at this end.

[0007] Preferably, the grinding machine body is rear-wheel driven, and the rear wheel axle is provided with two U-shaped hoops from bottom to top at the circumference near the tire, and the rear part of the frame is provided with two semicircular supports with openings facing downward at the rear wheel axle position, and the rear wheel axle is located between the two semicircular supports and the two U-shaped hoops, and the tops of the two U-shaped hoops are provided with external threads and are locked on the frame flange above the two semicircular supports by nuts.

[0008] Preferably, the front of the dust suction plate is connected to the grinding plate, and the dust suction pipe is located behind the dust suction plate; the bottom surface of the dust suction plate is flush with the bottom surface of the grinding plate.

[0009] Preferably, the grinding disc comprises a gear box cover with an open opening facing downward, a gear box is provided in the inner middle part of the gear box cover, an input shaft on the top surface of the gear box is connected to the motor, an output shaft on the bottom surface of the gear box is connected to the grinding head, the top surface of the gear box cover is screwed to the top surface of the gear box, and a motor installation clearance opening is provided in the middle of the top surface of the gear box cover; clearance grooves are symmetrically provided on the left and right sides of the top surface of the gear box cover, and ⊥-shaped connecting ears are provided in the clearance grooves, the bottoms of the connecting ears are passed through the clearance grooves and then screwed to the top surface of the gear box, and the tops of the connecting ears are located at the top of the gear box cover for connecting to the bottom of the front of the frame of the grinding machine body; a circular boss for screwing the gear box cover is fixed on the top surface of the gear box, and the circular boss is provided with an internal thread; a strip boss for screwing the connecting ear is screwed to the top surface of the gear box, and the strip boss is provided with an internal thread; the circular boss is at the same height as the strip boss; the width of the clearance groove is smaller than the width of the strip boss; the length and width of the connecting ear are respectively smaller than the length and width of the clearance groove.

[0010] Preferably, a tool box is provided in the middle of the grinder body, and a box cover is provided on the top of the tool box.

[0011] Preferably, an armrest swing rod is provided at the top rear of the grinding machine body; the armrest swing rod includes an angle adjustment plate symmetrically installed on the frame by screws, a plurality of rectangular slots are evenly distributed on the circumference of the outer edge of the angle adjustment plate, a square swing frame is hinged between the middle parts of the two angle adjustment plates via a rotating shaft, the square swing frame is surrounded by square rods, and the square swing frame is provided with grooves extending along the length direction of the square rods on the left and right side square rods close to the angle adjustment plate, a clip strip is inserted in the two groove strips, the left and right ends of the clip strip are rectangular and extend out of the groove strip for positioning with the rectangular slot on the same side, and the clip strip is driven by a driving mechanism to reciprocate along the groove strip; the driving mechanism includes a fixed plate fixedly arranged inside the square swing frame, light pull rods are symmetrically penetrated on the left and right ends of the fixed plate, a lifting handle is screwed on the rear ends of the two light pull rods, the front ends of the two light pull rods are screwed on the clip strip, and springs are sleeved on the light pull rods between the clip strip and the fixed plate; an armrest is installed at the rear end of the square swing frame.

[0012] Preferably, a counterweight iron is hinged on the middle side of the frame of the grinding machine body, and the counterweight iron is hinged to the frame via a side bearing.

[0013] A working method of a grinder is performed according to the following steps: (1) the horizontal section of the support frame that is not stored is in a horizontal state, and its pin hole is connected to the lower pin hole of the connecting block through a plug pin, and the end face of the horizontal section faces the vertical plate surface to support it; the horizontal section of the support frame that is stored is in a vertical state, and its pin hole is connected to the upper pin hole of the connecting block through a plug pin, and the slot is inserted into the vertical plate surface; one end of the plug pin is a large head, and the other end passes through the pin hole and is positioned by an R-shaped pin passing through the small hole at the end; (2) there is a small gap between the dust suction plate and the grinding plate and the ground, and thicker dust can be gathered by the dust suction plate and sucked away by the dust suction pipe during mobile grinding, and thinner dust can also be sucked away by the dust suction pipe, and the dust suction effect is good; (3) the gear box cover is installed on the gear box, and the gear box is connected to the frame through the connecting ear piece passing through the clearance groove. The original structure of the gear box can meet the connection requirements with the frame, and the gear box cover is made thin.

[0014] Compared with the prior art, the present invention has the following beneficial effects: simple structure, a slot is provided at one end of the support frame for vertically inserting the front guide wheel on the vertical plate surface of the frame for storage when the front guide wheel is not in use, the support frame is easy to store, efficient, and easy to operate; there is a small gap between the dust suction disc and the grinding disc and the ground, and during mobile grinding, thicker dust can be gathered by the dust suction disc and sucked away by the dust suction pipe, and thinner dust is also sucked away by the dust suction pipe, and the dust suction effect is good.

[0015] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of an embodiment of the present invention (front guide wheel is stored).

[0017] Figure 2 This is a schematic diagram of the structure of an embodiment of the present invention (front guide wheel is used).

[0018] Figure 3 for Figure 1 A is a partial enlarged view of the .

[0019] Figure 4 for Figure 2 B is a partial enlarged view of .

[0020] Figure 5 Explosion diagram for the installation of the support frame Figure 1 .

[0021] Figure 6 Explosion diagram for the installation of the support frame Figure 2 .

[0022] Figure 7 Schematic diagram of the fixing of the rear wheel axle.

[0023] Figure 8 Schematic diagram of the grinding disc structure Figure 1 .

[0024] Fig. 9 Schematic diagram of the grinding disc structure Figure 2 .

[0025] Fig.10 This is a schematic diagram of the structure of the handrail swing rod.

[0026] Fig.11 Schematic diagram of the driving mechanism.

[0027] Fig.12 This is a schematic diagram of the connection of the counterweight iron.

[0028] Fig.13 This is the exploded diagram of the counterweight iron connection.

[0029] Fig.14 An exploded view of the grinding disc.

[0030] Fig.15 Schematic diagram of the grinding disc structure Figure 3 . DETAILED DESCRIPTION

[0031] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below with reference to the accompanying drawings for detailed description.

[0032] like Figures 1 to 15 As shown, a grinder comprises a grinder body, a grinding disc 1A is provided at the front bottom of the grinder body, a grinding head is built in the grinding disc, a dust suction disc 2A which is gradually narrowed from front to back is provided at the rear of the grinding disc, the bottom surface of the dust suction disc is open for dust suction, the top surface of the dust suction disc is closed and connected to a dust suction pipe 3A of an external negative pressure device, there is a small gap between the dust suction disc and the grinding disc and the ground, thicker dust can be gathered by the dust suction disc and sucked away by the dust suction pipe during mobile grinding, and thinner dust is also sucked away by the dust suction pipe, and the dust suction effect is good; a support frame 1 for mounting a front guide wheel is provided in front of the grinding disc, the support frame is detachably connected to the frame of the grinder body, and a slot 4 is provided at one end of the support frame for vertically inserting into a vertical plate surface 3 of the frame for storage when the front guide wheel 2 is not in use.

[0033] In the embodiment of the present invention, the support frame is detachably connected to the frame of the grinding machine body via the latch 5 .

[0034] In an embodiment of the present invention, the shape of the support frame is "L" shape, with the vertical section 6 at the bottom and the horizontal section 7 at the top, the front guide wheel is installed at the bottom of the vertical section, and the slot is located at the end of the horizontal section; the horizontal section of the support frame is a square tube, and the end of the horizontal section is provided with a pin hole 8 on the side of the slot; two connecting blocks 9 are fixedly provided with left and right symmetry on the front wall of the vertical plate surface, and two pin holes are opened on the upper and lower parts of the two connecting blocks; the unreceived horizontal section of the support frame is in a horizontal state, and its pin hole is connected to the lower pin hole of the connecting block through a pin, and the end face of the horizontal section is facing the vertical plate surface; the received horizontal section of the support frame is in a vertical state, and its pin hole is connected to the upper pin hole of the connecting block through a pin; the length and width of the square tube are greater than the maximum distance between the two connecting blocks, and the two connecting blocks are inserted into the inside when connecting; one end of the pin is a large head, and after the other end passes through the pin hole, it is positioned 10 by an R-type pin passing through the small hole at this end.

[0035] In the embodiment of the present invention, the grinding machine body is driven by the rear wheel, and the rear wheel axle 11 is provided with two U-shaped hoop strips 12 from bottom to top at the circumference near the tire. The rear part of the frame is provided with two semicircular supports 13 with openings facing downward at the rear wheel axle position. The rear wheel axle is located between the two semicircular supports and the two U-shaped hoop strips. The tops of the two U-shaped hoop strips are provided with external threads and are locked on the frame flange 15 above the two semicircular supports by nuts 14.

[0036] In the embodiment of the present invention, the front of the dust suction plate is communicated with the grinding plate, and the dust suction pipe is located behind the dust suction plate; the bottom surface of the dust suction plate is flush with the bottom surface of the grinding plate.

[0037] In the embodiment of the present invention, the grinding disc includes a gear box cover 1B with an opening facing downward, a gear box 2B is arranged in the inner middle of the gear box cover, an input shaft on the top surface of the gear box is connected to a motor 3B, an output shaft on the bottom surface of the gear box is connected to a grinding head 4B, the top surface of the gear box cover is screwed to the top surface of the gear box, and a motor installation clearance opening 5B is arranged in the middle of the top surface of the gear box cover; clearance grooves 6B are symmetrically arranged on the left and right sides of the top surface of the gear box cover, and the clearance grooves are each provided with a ⊥-shaped connecting ear piece 7B, and the bottom of the connecting ear piece passes through the clearance groove The strip is screwed to the top surface of the gear box, and the top of the connecting ear is located on the top of the gear box cover, which is used to connect with the front bottom of the frame 10B of the grinding machine body; a circular boss 8B for screwing the gear box cover is fixed on the top surface of the gear box, and the circular boss is provided with an internal thread; a strip boss 9B for screwing the connecting ear is screwed to the top surface of the gear box, and the strip boss is provided with an internal thread; the circular boss is at the same height as the strip boss; the width of the makeshift groove is smaller than the width of the strip boss; the length and width of the connecting ear are respectively smaller than the length and width of the makeshift groove.

[0038] In the embodiment of the present invention, a tool box 4A is provided in the middle of the grinder body, and a box cover 5A is provided on the top of the tool box.

[0039] In the embodiment of the present invention, an armrest swing rod 6A is provided at the top rear of the grinder body; the armrest swing rod includes an angle adjustment plate 8A symmetrically installed on the frame 7A by screws, and a plurality of rectangular card grooves 9A are evenly distributed on the circumference of the outer edge of the angle adjustment plate. The rectangular card grooves are easy to process, low in cost, and firmly and stably set. A square swing frame 11A is hinged between the middle parts of the two angle adjustment plates via a rotating shaft 10A. The square swing frame is surrounded by square rods. The square swing frame is provided with grooves 12A extending along the length direction of the square rods on the left and right side square rods close to the angle adjustment plate. The two grooves A card strip 13A is inserted into the strip. The left and right ends of the card strip are rectangular with chamfered corners and extend out of the slot strip to align with the rectangular card slot on the same side. The card strip is driven by a driving mechanism to reciprocate along the slot strip. The driving mechanism includes a fixed plate 14A fixed inside the square swing frame. Light pull rods 15A are symmetrically penetrated on the left and right ends of the fixed plate. The rear ends of the two light pull rods are screwed with a lifting handle 16A. The front ends of the two light pull rods are screwed with the card strip. Springs 17A are sleeved on the light pull rods between the card strip and the fixed plate. A handrail 18A is installed at the rear end of the square swing frame. By pulling the handle, the left and right ends of the card strip can be controlled to be embedded in or out of the rectangular card slot to adjust the angle of the square swing frame.

[0040] In the embodiment of the present invention, a counterweight iron 19A is hingedly connected to the middle side of the frame of the grinding machine body, and the counterweight iron is hingedly connected to the frame via a side bearing 20A.

[0041] A working method of a grinder is performed according to the following steps: (1) the horizontal section of the support frame that is not stored is in a horizontal state, and its pin hole is connected to the lower pin hole of the connecting block through a plug pin, and the end face of the horizontal section faces the vertical plate surface to support it; the horizontal section of the support frame that is stored is in a vertical state, and its pin hole is connected to the upper pin hole of the connecting block through a plug pin, and the slot is inserted into the vertical plate surface; one end of the plug pin is a large head, and the other end passes through the pin hole and is positioned by an R-shaped pin passing through the small hole at the end; (2) there is a small gap between the dust suction plate and the grinding plate and the ground, and thicker dust can be gathered by the dust suction plate and sucked away by the dust suction pipe during mobile grinding, and thinner dust can also be sucked away by the dust suction pipe, and the dust suction effect is good; (3) the gear box cover is installed on the gear box, and the gear box is connected to the frame through the connecting ear piece passing through the clearance groove. The original structure of the gear box can meet the connection requirements with the frame, and the gear box cover is made thin.

[0042] The present invention is not limited to the above-mentioned best embodiment. Anyone can derive other various forms of grinding machines and working methods thereof under the enlightenment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims

1. A grinding machine, characterized in that: The invention comprises a grinding machine body, a grinding disc is arranged at the front bottom of the grinding machine body, a grinding head is built in the grinding disc, a dust collecting disc which gradually shrinks from front to back is arranged at the rear of the grinding disc, the bottom of the dust collecting disc is open for dust collection, the top of the dust collecting disc is closed and connected with a dust collecting pipe of an external negative pressure device; a support frame for installing a front guide wheel is arranged in front of the grinding disc, the support frame is detachably connected to the frame of the grinding machine body, and a slot is arranged at one end of the support frame for vertically inserting into the vertical plate surface of the frame for storage when the front guide wheel is not in use; the support frame is in an "L" shape, with the vertical section at the bottom and the horizontal section at the top, the front guide wheel is arranged at the bottom of the vertical section, and the slot is located at the end of the horizontal section; the horizontal section of the support frame is a square tube, and the end of the horizontal section is at There is a pin hole on the side of the slot; two connecting blocks are symmetrically fixed on the front wall of the vertical plate surface, and two pin holes are opened on the upper and lower parts of the two connecting blocks; the horizontal section of the unreceived support frame is in a horizontal state, and its pin hole is connected to the lower pin hole of the connecting block through a pin, and the end face of the horizontal section is against the vertical plate surface; the horizontal section of the received support frame is in a vertical state, and its pin hole is connected to the upper pin hole of the connecting block through a pin; the length and width of the square tube are greater than the maximum distance between the two connecting blocks, and the two connecting blocks are inserted into the inside when connecting; one end of the pin is a large head, and the other end passes through the pin hole and is positioned by an R-shaped pin passing through the small hole at the other end; a counterweight iron is hinged on the middle side of the frame of the grinding machine body, and the counterweight iron is hinged to the frame through a side bearing.

2. The grinding machine according to claim 1, characterized in that: The grinding machine body is rear-wheel driven, and the rear wheel axle is provided with two U-shaped hoops from bottom to top at the circumference near the tire. The rear part of the frame is provided with two semicircular supports with openings facing downwards at the rear wheel axle position, and the rear wheel axle is located between the two semicircular supports and the two U-shaped hoops. The tops of the two U-shaped hoops are provided with external threads and are locked on the frame flange above the two semicircular supports by nuts.

3. The grinding machine according to claim 1, characterized in that: The front of the dust suction plate is communicated with the grinding plate, and the dust suction pipe is located at the rear of the dust suction plate; the bottom surface of the dust suction plate is flush with the bottom surface of the grinding plate.

4. The grinding machine according to claim 1, characterized in that: The grinding disc comprises a gear box cover with an opening facing downward, a gear box is arranged in the inner middle part of the gear box cover, an input shaft on the top surface of the gear box is connected to the motor, an output shaft on the bottom surface of the gear box is connected to the grinding head, the top surface of the gear box cover is screwed to the top surface of the gear box, and a motor installation clearance opening is arranged in the middle of the top surface of the gear box cover; clearance grooves are symmetrically arranged on the left and right sides of the top surface of the gear box cover, and ⊥-shaped connecting ears are arranged in the clearance grooves, the bottoms of the connecting ears are passed through the clearance grooves and then screwed to the top surface of the gear box, and the tops of the connecting ears are located at the top of the gear box cover for connecting to the front bottom of the frame of the grinding machine body; a circular boss for screwing the gear box cover is fixed on the top surface of the gear box, and the circular boss is provided with an internal thread; a strip boss for screwing the connecting ears is screwed to the top surface of the gear box, and the strip boss is provided with an internal thread; the circular boss is at the same height as the strip boss; the width of the clearance groove is smaller than the width of the strip boss; the length and width of the connecting ears are respectively smaller than the length and width of the clearance groove.

5. The grinding machine according to claim 1, characterized in that: A tool box is arranged in the middle of the grinder body, and a box cover is arranged on the top of the tool box.

6. The grinding machine according to claim 1, characterized in that: An armrest swing rod is provided at the top rear of the grinding machine body; the armrest swing rod includes an angle adjustment plate symmetrically installed on the frame by screws, and a plurality of rectangular slots are evenly distributed on the circumference of the outer edge of the angle adjustment plate. A square swing frame is hinged between the middle parts of the two angle adjustment plates via a rotating shaft, and the square swing frame is surrounded by square rods. The square rods on the left and right sides of the square swing frame close to the angle adjustment plate are provided with grooves extending along the length direction of the square rods, and a card strip is inserted in the two grooves. The left and right ends of the card strip are rectangular and extend out of the groove to be positioned with the rectangular slot on the same side, and the card strip is driven by a driving mechanism to reciprocate along the groove; the driving mechanism includes a fixed plate fixedly arranged inside the square swing frame, and light pull rods are symmetrically penetrated on the left and right ends of the fixed plate, and the rear ends of the two light pull rods are screwed with a lifting handle, and the front ends of the two light pull rods are screwed with the card strip, and springs are sleeved on the light pull rods between the card strip and the fixed plate; an armrest is installed at the rear end of the square swing frame.

7. A method for operating a grinding machine according to any one of claims 1 to 6, characterized in that: Proceed as follows: (1) The horizontal section of the support frame that is not stored is in a horizontal state, and its pin hole is connected to the lower pin hole of the connecting block through a pin, and the end face of the horizontal section is supported by the vertical plate surface; the horizontal section of the stored support frame is in a vertical state, and its pin hole is connected to the upper pin hole of the connecting block through a pin, and the slot is inserted into the vertical plate surface; one end of the pin is a large head, and the other end passes through the pin hole and is positioned by an R-shaped pin passing through the small hole at the end; (2) There is a gap between the dust suction plate and the grinding plate and the ground. When moving and grinding, the dust can be gathered by the dust suction plate and sucked away by the dust suction pipe, and the dust suction effect is good; (3) The gear box cover is installed on the gear box, and the gear box is connected to the frame through the connecting ear piece passing through the give way groove. The original structure of the gear box can meet the connection requirements with the frame, and the gear box cover is made thin.

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