CN112975618B

CN112975618B - Concrete buffing machine

Info

Publication number: CN112975618B
Application number: CN202110121386.1A
Authority: CN
Inventors: 杨志钢; 朱利达
Original assignee: Shanghai Yiduan Metal Smelting Co ltd
Current assignee: Shaoyang Jixiang Concrete Co ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2022-11-15
Anticipated expiration: 2041-01-28
Also published as: CN112975618A

Abstract

The invention discloses a concrete polishing machine, which relates to the technical field of constructional engineering equipment, and adopts the technical scheme that the concrete polishing machine comprises a bottom plate, wherein a structural component for providing support is arranged on the bottom plate, the structural component comprises support frames connected to the upper ends of the two sides of the bottom plate, the support frames are connected through a fixed rod, handrails are arranged on the fixed rod, a polishing device for flattening and polishing a concrete surface is arranged on the structural component, the polishing device comprises a pressing block, a flattening mechanism for enabling the pressing block to rise and instantly release so as to freely fall and tamp the concrete surface, and a polishing mechanism for performing pre-polishing and secondary polishing by performing reciprocating and flat sweeping on the two sides of the pressing block; the polishing device is provided with an adjusting device which can adjust the weight of the pressing block and the distance between the pressing block and the concrete surface, and further change the gravitational potential energy of the pressing block to change the tamping pressure, and the technical effect is that the device can adjust the pressure applied to the concrete.

Description

Concrete buffing machine

Technical Field

The invention relates to the technical field of constructional engineering equipment, in particular to a concrete polishing machine.

Background

In order to improve the flatness and the smoothness of the surfaces of outdoor terrace, pavement, ground, floor and roof cast-in-place concrete, some construction units adopt a concrete polishing machine to carry out mechanical polishing so as to improve the flatness and the smoothness of the surfaces of the cast-in-place concrete. The polishing technology of the concrete polisher is generally that after concrete is poured and before initial setting, the concrete polisher is used for flattening and polishing twice, and then polishing twice is carried out.

The existing polishing machine carries out polishing through the self weight and cannot be changed, and then only the machine can be changed when different pressures are needed.

Disclosure of Invention

The invention aims to provide a concrete polishing machine which has the advantage of adjusting the pressure applied to concrete.

The technical purpose of the invention is realized by the following technical scheme:

a concrete buffing machine comprises a bottom plate, wherein a structural component for providing support is arranged on the bottom plate, the structural component comprises support frames connected to the upper ends of the two sides of the bottom plate, the support frames are connected through a fixed rod, a handrail is arranged on the fixed rod, a buffing device for flattening and buffing a concrete surface is arranged on the structural component, the buffing device comprises a pressing block, a flattening mechanism for enabling the pressing block to rise and instantly release so as to freely fall and tamp the concrete surface, and a buffing mechanism for reciprocating and sweeping the two sides of the pressing block to finish pre-buffing and secondary buffing; the polishing device is provided with an adjusting device which can adjust the weight of the pressing block and the distance between the pressing block and the concrete surface so as to change the gravitational potential energy of the pressing block to change the tamping pressure.

By adopting the technical scheme, the flattening mechanism compacts the concrete surface through the gravitational potential energy of the object, so that the self weight of the equipment can be reduced, the equipment is convenient to carry, and the impact force is formed through the gravitational potential energy of the object to compact the concrete surface; the polishing mechanisms are arranged on two sides of the pressing block, so that the concrete surface can be polished for one time before compaction, the pressing block can be uniformly stressed in the compaction process, the deformation of the surface of the concrete is reduced when the concrete is stressed, and the secondary polishing can be accurate after compaction; adjusting device is according to G = mg, and then can change ramming pressure through the weight and the distance that change the briquetting to make this device simple structure and possess adjustable effect, application scope is wider.

Further setting: the adjusting device comprises a heightening assembly for adjusting the relative distance between the pressing block and the concrete surface and a weight adjusting assembly for enabling the inside of the pressing block to be provided with an accommodating space and further storing or taking out additional weights.

Through adopting above-mentioned technical scheme, the independent setting of heightening subassembly and accent heavy subassembly makes the scope of regulation wider and according to can be as required and then the selective operation for the practicality of this device is stronger.

Further setting: the flattening mechanism comprises a connecting assembly and a lifting assembly, wherein the connecting assembly enables the pressing block to vertically move, and the lifting assembly drives the pressing block to rise to a certain height and instantly release to fall.

Through adopting above-mentioned technical scheme, coupling assembling assists lifting unit to remove, and then reduces the loss of lifting unit potential energy for the compaction effect is better.

Further setting: the connecting assembly comprises a pressing block groove arranged on the bottom plate, and the pressing block groove is connected with a pressing block in a sliding manner; a plurality of sliding sleeve sets are respectively arranged on two sides of the supporting frame, the sliding sleeve sets on each side are distributed up and down, and the sliding sleeve sets are connected to two sides of the supporting frame, which are close to the pressing block; the two sides of the support frame are respectively provided with a slide rail group, the slide rail group is connected with the slide sleeve group in a sliding manner, a rack is arranged in the slide rail group, and the rack is connected with the slide rail group.

Through adopting above-mentioned technical scheme, slide rail group and sliding sleeve group sliding connection make the briquetting carry out spacing removal.

Further setting: the lifting assembly comprises a first part, a second part and a frequency converter; the first component and the second component are arranged in the same structure and are arranged on two sides of the structural component, and the directions of the first component and the second component are opposite; the first component comprises a platform arranged on one side of the upper end of the bottom plate, a speed reducing motor is arranged on the platform, the speed reducing motor is provided with an output shaft, and an output gear is connected to the output shaft; a driven shaft is rotatably connected to the platform, and an intermediate gear, an intermediate gear and an output gear are arranged on the driven shaft; an incomplete gear is arranged on the driven shaft and is meshed with the rack; the frequency converter is arranged on the handrail, and the frequency converter, the speed reducing motor and the external power supply are connected.

By adopting the technical scheme, the first component and the second component are arranged in opposite directions, so that the pressing block can be quickly and stably lifted to a high position, and the gear has the advantages of stable transmission ratio, high efficiency, long service life and high working reliability through the meshing of the incomplete gear and the rack, so that the lifting assembly can drive the heavier pressing block under the condition of energy conservation, the equipment is stable and reliable, meanwhile, the pressing block can be freely lifted through the meshing or idling of the gear, and the compaction effect on concrete is better; the frequency converter can control the running speed of the speed reducing motor, so that the pressing block has different lifting speeds, and further is more humanized.

Further setting: the polishing mechanism comprises a polishing component which slides and rubs with the concrete surface and a translation component which drives the polishing component to move back and forth.

Through adopting above-mentioned technical scheme, buffing mechanism sets up in the both sides that flatten the mechanism for at work, one side buffing mechanism can treat the compacted concrete face and grind flat, makes the compaction effect of flattening the mechanism better, and another side buffing mechanism can polish behind the concrete after the compaction, makes and polishes the effect better.

Further setting: the polishing assembly comprises a support sleeve connected to the outer side of the support, and a cross rod is movably connected in the support sleeve; the two ends of the cross rod are connected with supporting rods, the supporting rods are connected with the cross rod in a sliding manner, the upper ends of the supporting rods are in sliding contact with the upper end of the cross rod, and the lower ends of the supporting rods are connected with polishing plates; the translation assembly comprises a disc arranged on the outer side of the platform, an output shaft penetrates through the platform to be connected with the disc, and the output shaft is rotatably connected with the platform; a swing rod is arranged on one side, close to the disc, of the platform and is in rotating connection with the platform, a swing rod groove is formed in the upper portion of the swing rod, a shifting block is slidably abutted in the swing rod groove, and the shifting block is connected with the disc; the bottom end of the swing rod is connected with swing teeth, and the upper end of the cross rod is provided with blocking teeth which are meshed with the swing teeth.

By adopting the technical scheme, the supporting sleeve has a better supporting effect on the cross rod, and the polishing plate is connected with the cross rod through the supporting rod, so that the structure is more stable, and the distance between the cross rod and the polishing plate can be conveniently adjusted; the rectangular design of the polishing plate enables the polishing plate to polish the corners of the building without manual polishing for a second time; the shifting block is abutted to the sliding of the swing rod groove, so that the swing rod can move in a reciprocating manner, and the cross rod can move in a reciprocating manner through the meshing of the swing teeth and the blocking teeth.

Further setting: the height-adjusting assembly comprises a threaded hole arranged on the cross rod, a threaded rod is connected with the threaded hole in a threaded manner, the lower end of the threaded rod is rotatably connected with the polishing plate, and the upper end of the threaded rod is connected with a turntable; the weight adjusting assembly comprises a storage cavity arranged at the top of the pressing block, the storage cavity is communicated with the outside, a cover plate is arranged at the upper end of the pressing block, and the cover plate covers the storage cavity; one end of the cover plate is rotatably connected with the pressing block, and the other end of the cover plate is in threaded connection with the pressing block through a bolt.

By adopting the technical scheme, the threaded rod is convenient to adjust and has a good locking effect; the storing chamber is placed and is convenient for add the heavy object to the storing intracavity at the briquetting top, and the apron can prevent that the object of storing intracavity from dropping convenient to use.

Further setting: the two sides of the bottom plate are respectively provided with a moving device which enables the device to move or work; the moving device comprises a sliding assembly provided with a turnable sliding part and a locking assembly which enables the sliding part to be clamped above or below the bottom plate.

Through adopting above-mentioned technical scheme, two kinds of modes of mobile device can be applicable to the different situations, and the work that locks sliding assembly to upper portion from not influencing equipment at the during operation does not take place to offset with the concrete face, when needs remove, can make things convenient for the mobile device through locking sliding assembly to the lower part, reduces the production of manpower.

Further setting: the sliding assembly comprises a pulley shaft arranged on the bottom plate, the pulley shaft is rotatably connected with the bottom plate, a group of pulley bars are symmetrically connected to the pulley shaft, and pulleys are rotatably connected to the bottom ends of the pulley bars; the bottom of the bottom plate is provided with a pulley groove; the locking assembly comprises a first threaded hole and a second threaded hole which are arranged on two sides of the bottom plate, and the first threaded hole is positioned on the upper side of the second threaded hole; the pulley lever is close to the bottom plate side and is equipped with the connecting threaded hole, and first screw hole and second screw hole pass through bolted connection with the connecting threaded hole.

Through adopting above-mentioned technical scheme, the pulley bar of being convenient for of landing axle drives the pulley and overturns from top to bottom, and the setting of first screw hole, second screw hole, connecting thread hole and shank of bolt not only makes locking effectual and convenient.

Drawings

FIG. 1 is a schematic structural view of a first preferred embodiment;

FIG. 2 is an enlarged schematic view of the direction A in FIG. 1;

FIG. 3 is an enlarged schematic view in the direction B of FIG. 1;

fig. 4 is an enlarged schematic view in the direction C in fig. 1.

In the figure, 1, a bottom plate; 10. a structural component; 11. a support frame; 12. a fixing rod; 13. a handrail; 2. a polishing device; 21. a flattening mechanism; 22. a polishing mechanism; 210. pressing into blocks; 211. a connecting assembly; 213. a lifting assembly; 2110. a block pressing groove; 2111. a slip sleeve set; 2112. a slide rail set; 2113. a rack; 2131. a first member; 2132. a second component; 2133. a frequency converter; 2134. a platform; 2135. a reduction motor; 2136. an output shaft; 2137. an output gear; 2138. an intermediate gear; 221. a polishing assembly; 222. a translation assembly; 2211. a support sleeve; 2212. a cross bar; 2213. a support bar; 2214. a polishing plate; 2221. a disc; 2222. a swing rod; 2223. a swing rod groove; 2224. shifting blocks; 2225. swinging the teeth; 2226. a gear tooth; 3. an adjustment device; 31. a height adjustment component; 32. a weight adjusting component; 311. a threaded hole; 312. a threaded rod; 313. a turntable; 321. a storage chamber; 322. a cover plate; 323. a bolt; 4. a mobile device; 41. a sliding assembly; 42. a locking assembly; 411. a pulley shaft; 412. a pulley lever; 413. a pulley; 414. a pulley groove; 421. a first threaded hole; 422. a second threaded hole; 423. connecting threaded holes; 424. a bolt shank.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

First preferred embodiment:

a concrete grinder, as shown in figure 1, comprises a base plate 1, and a structural component 10 for providing support is arranged on the base plate 1.

The structural component 10 comprises support frames 11 connected to the upper ends of the two sides of the bottom plate 1, the support frames 11 are connected through a group of fixing rods 12, and handrails 13 are arranged on the fixing rods 12.

As shown in fig. 1 and 2, a polishing device 2 for flattening and polishing a concrete surface is provided on a structural member 10, and the polishing device 2 includes a press block 210, a flattening mechanism 21 for raising and instantaneously releasing the press block 210 to freely drop and tamp the concrete surface, and a polishing mechanism 22 for performing preliminary polishing and secondary polishing by reciprocating and sweeping on both sides of the press block 210.

As shown in fig. 1 and 2, the flattening mechanism 21 includes a connecting assembly 222 for vertically moving the pressing block 210 and a lifting assembly 213 for driving the pressing block 210 to ascend to a certain height and instantly release the pressing block to fall.

As shown in fig. 2, the connection assembly 211 includes a press block groove 2110 disposed on the bottom plate 1, and the press block groove 2110 is slidably connected to the press block 210, so that the press block 210 passes through the press block groove 2110 to abut against the concrete surface; two sliding sleeve groups 2111 are respectively arranged at the front side and the rear side of the support frame 11, the sliding sleeve group 2111 at each side is distributed up and down, and the sliding sleeve groups 2111 are connected at the two sides of the support frame 11 close to the pressing block 210; the front side and the rear side of the support frame 11 are respectively provided with a sliding rail group 2112, and the sliding rail group 2112 is connected with a sliding sleeve group 2111 in a sliding way; a rack 2113 is arranged in the sliding rail set 2112, two sides of the rack 2113 are connected with the sliding rail set 2112, and the rack 2113 is connected with the pressing block groove 2110 in a sliding manner, so that the rack 2113 moves up and down along the support frame 11 without deviation; the rack 2113 is connected with the pressing block 210, and the bottom end of the rack 2113 is not lower than that of the pressing block 210, so that the pressing block 210 can move up and down along the supporting frame 11 through the rack 2113.

As shown in fig. 1, the lifting assembly 213 includes a first part 2131, a second part 2132, and a frequency converter 2133. The first member 2131 and the second member 2132 have the same structure and are symmetrically disposed on both sides of the structural member 10, and the first member 2131 and the second member 2132 are only opposite in direction, so for convenience of description, the first member 2131 will be described below as an example; the first component 2131 comprises a platform 2134 arranged on one side of the upper end of the bottom plate 1, a speed reducing motor 2135 is arranged on the platform 2134, an output shaft 2136 is arranged on the speed reducing motor 2135, and an output gear 2137 is connected onto the output shaft 2136; a driven shaft (not shown in the figure) is rotatably connected to the platform 2134, an intermediate gear 2138 is arranged on the driven shaft, the intermediate gear 2138 is meshed with the output gear 2137, the size of the intermediate gear 2138 is larger than that of the output gear 2137, so that the speed reducing motor 2135 drives the intermediate gear 2138 to rotate, and the size of the output gear 2137 is smaller than that of the intermediate gear 2138, so that the torque of the intermediate gear 2138 is increased, the rotating speed of the intermediate gear 2138 is reduced, and a heavy object can be driven; an incomplete gear (not shown in the figure) is arranged on the driven shaft and is meshed with the rack 2113, so that the pressing block 210 moves upwards when the incomplete gear is meshed with the rack 2113, and the pressing block 210 falls downwards to a mixed concrete surface through self gravity when the middle gear 2138 idles, and further compaction of concrete is completed; the frequency converter 2133 is arranged on the armrest 13, the frequency converter 2133 and the reducing motor 2135 are connected with an external power supply, the reducing motor 2135 is set to be a third-gear power through the frequency converter 2133, and therefore the power of the reducing motor 2135 can be adjusted through the frequency converter 2133.

As shown in fig. 1, the polishing mechanism 22 includes a polishing unit 221 for sliding friction with the concrete surface and a translation unit 222 for driving the polishing unit 221 to reciprocate.

As shown in fig. 1, the polishing assembly 221 is connected to a set of support sleeves 2211 on the outer side of the support, the support sleeves 2211 are symmetrically arranged, and the support sleeves 2211 are internally and movably connected with a cross bar 2212; the two ends of the cross bar 2212 extending out of the supporting sleeve 2211 are connected with supporting rods 2213, and the supporting rods 2213 penetrate through holes in the cross bar 2212 to be in sliding connection with the cross bar 2212, so that the supporting rods 2213 can only move in the vertical direction of the cross bar 2212; the upper end of the support rod 2213 is in sliding contact with the upper end of the cross rod 2212, the lower end of the support rod 2213 is connected with a polishing plate 2214, and the polishing plate 2214 is rectangular, so that the polishing plate 2214 moves horizontally along with the cross rod 2212, and the polishing plate 2214 can polish the concrete surface.

As shown in fig. 1, the translation assembly 222 includes a disc 2221 disposed outside the platform 2134, and the output shaft 2136 passes through the platform 2134 to connect with the disc 2221, so that the disc 2221 rotates with the reduction motor 2135; a swing rod 2222 is arranged on one side, close to the disc 2221, of the platform 2134, the swing rod 2222 is rotatably connected with the platform 2134, a swing rod groove 2223 is formed in the upper portion of the swing rod 2222, a shifting block 2224 is arranged on one side, close to the swing rod groove 2223, of the disc 2221, and the shifting block 2224 is in sliding abutting contact with the swing rod groove 2223, so that the swing rod 2222 can swing back and forth when the disc 2221 rotates; the bottom end of the swing rod 2222 is connected with swing teeth 2225, the upper end of the cross rod 2212 is provided with blocking teeth 2226, and the blocking teeth 2226 are meshed with the swing teeth 2225, so that the cross rod 2212 moves back and forth along with the swing rod 2222, and the polishing plate 2214 is rubbed with the concrete surface back and forth.

As shown in fig. 2 and 3, the polishing device 2 is provided with an adjusting device 3 which can adjust the weight of the pressing block 210 and the distance between the pressing block 210 and the concrete surface, and further change the gravitational potential energy of the pressing block 210 to change the tamping pressure. The adjusting device 3 comprises a height adjusting component 31 for adjusting the relative distance between the pressing block 210 and the concrete surface and a weight adjusting component 32 for enabling the pressing block 210 to be internally provided with a containing space so as to store or take out additional weights.

As shown in fig. 3, the height-adjusting assembly 31 includes a threaded hole 311 disposed on the cross bar 2212, a threaded rod 312 is connected to the threaded hole 311 through internal threads, the lower end of the threaded rod 312 is rotatably connected to the polishing plate 2214, and a rotating disc 313 is connected to the upper end of the threaded rod 312, so that the distance between the cross bar 2212 and the polishing disc can be adjusted by rotating the rotating disc 313, when pressure needs to be added to the concrete surface, the distance between the pressing block 210 and the concrete surface is increased by increasing the distance between the cross bar 2212 and the polishing disc, and then the pressure is increased when the pressing block 210 drops to the concrete surface under the condition of the same weight.

As shown in fig. 2, the weight-adjusting assembly 32 includes a storage cavity 321 disposed at the top of the pressing block 210, the storage cavity 321 is communicated with the outside, a cover plate 322 is disposed at the upper end of the pressing block 210, and the cover plate 322 covers the storage cavity 321; apron 322 one end is rotated with briquetting 210 and is connected, and the apron 322 other end passes through bolt 323 and briquetting 210 threaded connection for can lock or the unblock with apron 322 and briquetting 210 through rotating bolt 323, thereby when needing to increase the pressure to the concrete, through increasing the heavy object to storing chamber 321 and can make briquetting 210's gravity increase, and then make briquetting 210 drop to the pressure increase of concrete face under the circumstances of equal height.

As shown in fig. 4, the front and rear sides of the base plate 1 are respectively provided with a moving device 4 having two modes of an operating mode and a moving mode; the moving means 4 comprises a sliding assembly 41 rotating around an axis and a locking assembly 42 which enables the sliding assembly 41 to lock through the threaded connection of the different position holes.

The sliding assembly 41 comprises a pulley shaft 411 arranged on the base plate 1, the pulley shaft 411 is rotatably connected with the base plate 1, and a group of pulley levers 412 are symmetrically connected to the pulley shaft 411; the bottom of the bottom plate 1 is provided with a pulley groove 414, and the pulley groove 414 is not abutted against the pulley shaft 411; the pulley 413 is rotatably connected to the bottom of the pulley lever 412, and the pulley 413 does not abut against the pulley groove 414, so that when the pulley 413 rotates to the upper end of the bottom plate 1 through the pulley shaft 411, the pulley does not abut against the concrete surface and does not influence the operation of the device.

The locking assembly 42 comprises a group of first threaded holes 421 arranged at two sides of the base plate 1, a group of connecting threaded holes 423 are arranged at the side, close to the base plate 1, of the pulley rod 412, and the first threaded holes 421 and the connecting threaded holes 423 are in threaded connection through bolt rods 424; two sides of the bottom plate 1 are provided with a group of second threaded holes 422, the second threaded holes 422 are located on the lower side of the first threaded holes 421, the second threaded holes 422 and the connecting threaded holes 423 are in threaded connection through bolt rods 424, so that when the first threaded holes 421 and the connecting threaded holes 423 are connected through the bolt rods 424, the pulley 413 is located on the upper side of the bottom plate 1, when the second threaded holes 422 and the connecting threaded holes 423 are connected through the bolt rods 424, the pulley 413 is located on the lower side of the bottom plate 1, in addition, the threaded connection through the bolt rods 424 is realized, and the pulley 413 can drive the equipment to move.

The above-mentioned embodiments are merely illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but only protected by the patent laws within the scope of the claims.

Claims

1. The utility model provides a concrete grinder, includes bottom plate (1), be equipped with structural component (10) that provide the support on bottom plate (1), structural component (10) are connected through dead lever (12) including connecting support frame (11) in bottom plate (1) both sides upper end between support frame (11), are equipped with handrail (13) on dead lever (12), are equipped with on structural component (10) to the concrete face flatten and polish polishing device (2), its characterized in that:

the polishing device (2) comprises a pressing block (210), a flattening mechanism (21) which enables the pressing block (210) to rise and instantly release so as to freely fall and tamp the concrete surface, and a polishing mechanism (22) which performs reciprocating and flat sweeping on two sides of the pressing block (210) so as to finish pre-polishing and secondary polishing;

the polishing device (2) is provided with an adjusting device (3) which can adjust the weight of the pressing block (210) and the distance between the pressing block (210) and the concrete surface so as to change the gravitational potential energy of the pressing block (210) to change the tamping pressure;

the adjusting device (3) comprises a height adjusting component (31) for adjusting the relative distance between the pressing block (210) and the concrete surface and a weight adjusting component (32) for enabling the pressing block (210) to be internally provided with an accommodating space so as to store or take out additional weights; the flattening mechanism (21) comprises a connecting component (211) which enables the pressing block (210) to move vertically and a lifting component (213) which drives the pressing block (210) to rise to a certain height and instantly releases and falls;

the connecting assembly (211) comprises a pressing block groove (2110) arranged on the bottom plate (1), and the pressing block groove (2110) is in sliding connection with the pressing block (210); a plurality of sliding sleeve sets (2111) are respectively arranged on two sides of the support frame (11), the sliding sleeve sets (2111) on each side are distributed up and down, and the sliding sleeve sets (2111) are connected to two sides, close to the pressing block (210), of the support frame (11); two sides of the support frame (11) are respectively provided with a sliding rail group (2112), the sliding rail group (2112) is connected with the sliding sleeve group (2111) in a sliding way, a rack (2113) is arranged in the sliding rail group (2112), and the rack (2113) is connected with the sliding rail group (2112);

the polishing mechanism (22) comprises a polishing component (221) which is in sliding friction with the concrete surface and a translation component (222) which drives the polishing component (221) to move back and forth; the polishing assembly (221) comprises a supporting sleeve (2211) connected to the outer side of the support, and a cross rod (2212) is movably connected in the supporting sleeve (2211); two ends of the cross bar (2212) are connected with supporting bars (2213), the supporting bars (2213) are in sliding connection with the cross bar (2212), the upper ends of the supporting bars (2213) are in sliding contact with the upper end of the cross bar (2212), and the lower ends of the supporting bars (2213) are connected with polishing plates (2214);

the translation assembly (222) comprises a disc (2221) arranged on the outer side of the platform (2134), an output shaft (2136) penetrates through the platform (2134) to be connected with the disc (2221), and the output shaft (2136) is rotatably connected with the platform (2134); a swing rod (2222) is arranged on one side, close to the disc (2221), of the platform (2134), the swing rod (2222) is rotatably connected with the platform (2134), a swing rod groove (2223) is formed in the upper portion of the swing rod (2222), a shifting block (2224) is slidably abutted in the swing rod groove (2223), and the shifting block (2224) is connected with the disc (2221); the bottom end of the swing rod (2222) is connected with swing teeth (2225), the upper end of the cross rod (2212) is provided with stop teeth (2226), and the stop teeth (2226) are meshed with the swing teeth (2225).

2. A concrete finishing machine as defined in claim 1, wherein: the lifting assembly (213) comprises a first part (2131), a second part (2132) and a frequency converter (2133); the first component (2131) and the second component (2132) are arranged in the same structure and are arranged on two sides of the structural component (10), and the first component (2131) and the second component (2132) are arranged in opposite directions;

the first component (2131) comprises a platform (2134) arranged on one side of the upper end of the bottom plate (1), a speed reducing motor (2135) is arranged on the platform (2134), an output shaft (2136) is arranged on the speed reducing motor (2135), and an output gear (2137) is connected to the output shaft (2136); a driven shaft is rotatably connected to the platform (2134), an intermediate gear (2138) and an output gear (2137) are arranged on the driven shaft; an incomplete gear is arranged on the driven shaft and is meshed with the rack (2113); the frequency converter (2133) is arranged on the handrail (13), and the frequency converter (2133) and the reducing motor (2135) are connected with an external power supply.

3. A concrete finishing machine as claimed in claim 1, wherein: the height-adjusting component (31) comprises a threaded hole (311) arranged on the cross rod (2212), a threaded rod (312) is connected with the threaded hole (311) in an internal thread mode, the lower end of the threaded rod (312) is rotatably connected with the polishing plate (2214), and a rotary disc (313) is connected with the upper end of the threaded rod (312);

the weight adjusting assembly (32) comprises a storage cavity (321) arranged at the top of the pressing block (210), the storage cavity (321) is communicated with the outside, a cover plate (322) is arranged at the upper end of the pressing block (210), and the cover plate (322) covers the storage cavity (321); one end of the cover plate (322) is rotatably connected with the pressing block (210), and the other end of the cover plate (322) is in threaded connection with the pressing block (210) through a bolt (323).

4. A concrete finishing machine as claimed in claim 1, wherein: the two sides of the bottom plate (1) are respectively provided with a moving device (4) which enables the device to move or work; the moving device (4) comprises a sliding component (41) which is provided with a reversible sliding component and a locking component (42) which enables the sliding component to be clamped above or below the bottom plate (1).

5. A concrete finishing machine as claimed in claim 4, wherein: the sliding assembly (41) comprises a pulley shaft (411) arranged on the bottom plate (1), the pulley shaft (411) is rotatably connected with the bottom plate (1), a group of pulley rods (412) are symmetrically connected to the pulley shaft (411), and pulleys (413) are rotatably connected to the bottom ends of the pulley rods (412); the bottom of the bottom plate (1) is provided with a pulley groove (414);

the locking assembly (42) comprises a first threaded hole (421) and a second threaded hole (422) which are arranged on two sides of the base plate (1), and the first threaded hole (421) is positioned on the upper side of the second threaded hole (422); the pulley rod (412) is provided with a connecting threaded hole (423) on the side close to the base plate (1), and the first threaded hole (421) and the second threaded hole (422) are in threaded connection with the connecting threaded hole (423) through a bolt rod (424).