CN112853883A

CN112853883A - Cement trowelling device for road construction

Info

Publication number: CN112853883A
Application number: CN202011627796.5A
Authority: CN
Inventors: 董胜峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-05-28

Abstract

The invention discloses a cement trowelling device for road construction, which comprises a trowelling machine body, wherein the trowelling machine body comprises a support frame, one end of the support frame is fixedly connected with a fixed frame, a telescopic rod is rotatably arranged on the fixed frame, two sides of one end of the telescopic rod are fixedly connected with a pair of fixed rods, handles are fixedly connected to the fixed rods, rubber sleeves are sleeved on the handles, a driving motor is fixedly connected to the support frame, a rotating shaft is fixedly arranged on the output end of the driving motor, a trowelling mechanism is fixedly connected to the bottom of the rotating shaft, the trowelling mechanism comprises a rotating disc, the rotating disc is fixedly arranged at the bottom of the rotating shaft; compared with the prior art, make the ejector pin outwards ejecting under the atmospheric pressure intracavity air pressure effect, with the aggregate rubble on cement surface etc. in jacking cement, avoided the trouble of changing trowelling plate and spatula, the kicking block produces the interact force after striking with the aggregate simultaneously, can drive elastic plate and the shake of first spring, makes ejector pin bottom cement shake off, avoids cement to remain in the ejector pin bottom.

Description

Cement trowelling device for road construction

Technical Field

The invention relates to the technical field of road construction, in particular to a cement leveling device for road construction.

Background

The road is an infrastructure for various trackless vehicles and pedestrians to pass through in terms of word meaning; the road is divided into a road, an urban road, a rural road, an industrial road, a forestry road, an examination road, a competition road, an automobile test road, a workshop passage, a school road and the like according to the use characteristics of the road.

In the process of road construction, the cement laid on the construction road needs to be leveled, usually a trowelling machine is adopted to level the road surface, however, since cement has poor fluidity, aggregates and the like are exposed on the surface of cement, and it is necessary to perform rough wiping and fine wiping, the cement surface is roughly smeared through the trowelling plate, aggregate gravels and the like exposed on the cement surface are trowelled, and then the cement is finely smeared by the trowel, so that the surface constructed by a machine is smoother and flatter than the surface constructed manually, the compactness and the wear resistance of the concrete surface can be greatly improved, and the working efficiency is improved by more than 10 times compared with manual operation in terms of efficiency, however, after rough troweling, the troweling plate needs to be replaced by the trowel, so that the construction time is wasted, the efficiency is reduced, the construction cost is increased by preparing two troweling machines, and the cement troweling device for road construction is provided for solving the problems.

Disclosure of Invention

The invention aims to provide a cement troweling device for road construction, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a cement trowelling device for road construction, includes the trowelling machine body, the trowelling machine body includes the support frame, support frame one end rigid coupling mount, and rotate on the mount and be equipped with the telescopic link, a pair of dead lever of telescopic link one end both sides fixedly connected with, fixedly connected with handle on the dead lever, and the cover is equipped with the rubber sleeve on hand, and the rubber sleeve surface is equipped with anti-skidding line, fixedly connected with driving motor on the support frame, fixed mounting has the pivot on the driving motor output, the mechanism is trowelled to pivot bottom fixedly connected with, trowelling mechanism includes the carousel, the fixed setting of carousel is in the pivot bottom, a plurality of trowelling cutter framves have been seted up on the carousel, install many trowelling cutter in the trowelling cutter frame, the trowelling cutter rotates the setting in the.

Preferably, the trowelling knife comprises a fixed plate, a rotating rod is fixedly arranged inside the trowelling knife rest, the fixed plate is rotatably arranged on the rotating rod, a scraper is fixedly connected to the bottom of the fixed plate, a plurality of first air bags are fixedly connected to the inner wall of one end of the trowelling knife rest, the outer wall of each first air bag abuts against one side of the fixed plate, a plurality of air pressure cavities are formed in the trowelling knife rest, a connecting pipe is connected between each air pressure cavity and each first air bag, an ejector rod is arranged in each air pressure cavity in a sliding mode, a limiting groove is formed in the inner wall of the other end of the trowelling knife rest, a limiting rod is movably arranged in each limiting groove, a first movable rod is inserted into one end of each limiting rod, a second movable rod is arranged at one end of each first movable rod, one end of each second movable rod is fixedly arranged on one side of the fixed plate, each first movable rod is, can produce the extrusion to first gasbag with the help of reaction force at the spatula frame internal rotation to can make the compression pole retract, can make the inside gas of first gasbag pass through the connecting pipe and carry to atmospheric pressure chamber.

Preferably, a pair of hinge bar is arranged inside the first air bag, the hinge bar is hinged to the inner wall of the spatula frame, a compression rod is inserted inside the hinge bar, one end of the compression rod is fixedly connected to the inner wall of the first air bag, one end of the compression rod is fixedly connected with a movable ball, one end of the movable ball is fixedly connected with a second spring, one end of the second spring is fixedly connected to the bottom of the inner wall of the hinge bar, and the second spring can drive the compression rod to move outwards after the compression rod disappears, so that the first air bag resets.

Preferably, fixedly connected with friction plate on the hinge rod inner wall, a plurality of clutch blocks of fixedly connected with on the compression rod lateral wall, the clutch block offsets with the friction plate, at the compression rod in-process that resets, produces the friction between friction plate and the friction block, can produce the vibrations of certain degree, shakes off the remaining cement in scraper surface, avoids the scraper to have cement to remain on the surface after colliding with.

Preferably, a first movable cavity and a second movable cavity are formed in the limiting rod, a first sliding plate is arranged in the first movable cavity in a sliding manner, one end of the first sliding plate is fixedly connected to one end of the first movable rod, one end of the first sliding plate is symmetrically connected with an extrusion plate, one end of the extrusion plate is fixedly connected to the side wall of the first movable cavity, the other end of the first sliding plate is fixedly connected with a hinge frame, a second air bag is fixedly arranged in the hinge frame, one end of the second air bag is fixedly connected with a pair of air pipes, one end of each air pipe is fixedly connected to the side wall of the second movable cavity, a connecting plate is fixedly connected in the second movable cavity, a plurality of third springs are fixedly connected to two ends of the connecting plate, one end of each third spring is fixedly connected with a second sliding plate, a plurality of clamping rods are fixedly connected to the second sliding plate, and the surfaces of, the utility model discloses a portable air-cushion trowel, including first activity chamber lateral wall, second activity chamber lateral wall, kelly activity, and spacing inslot is equipped with a plurality of chutes, kelly one end supports in the chute, when the trowel rotates, can make the second movable rod to a lateral motion to can drive first slide and slide at first activity intracavity, make first slide extrude the stripper plate, make articulated frame take place to deform, extrude the second gasbag, the inside gas of second gasbag is carried to second activity intracavity through a pair of gas-supply pipe, can be to second slide inward movement, make the kelly withdraw from the chute, make the kelly can move to the outside under the effect of first movable rod, the kelly can be followed the draw-in groove and withdrawn, can make the ejector pin outwards ejecting under the atmospheric pressure effect in the atmospheric pressure chamber, push up aggregate rubble etc. in the cement.

Preferably, first movable rod one end fixedly connected with spring, and spring one end fixedly connected with movable block, the movable block slides and sets up in the second movable rod, be equipped with a plurality of elastic components on the second movable rod inner wall, first movable rod is at the in-process movable block that resets and the mutual extrusion of elastic component produces the friction, also can produce vibrations, can shake off the remaining cement in scraper surface.

Preferably, ejector pin bottom fixedly connected with has a pair of fixed block, ejector pin bottom fixedly connected with stripper bar, ejector pin bottom fixedly connected with kicking block, fixedly connected with springboard between kicking block and fixed block, the first spring of fixedly connected with on the kicking block lateral wall, first spring one end fixed connection is on the fixed block lateral wall, and the kicking block of ejector pin bottom produces the effort of interacting after striking with the aggregate, can drive springboard and the shake of first spring, makes ejector pin bottom cement shake off, avoids cement to remain in the ejector pin bottom, and long-time use can lead to the cement piece to condense in the ejector pin bottom.

Preferably, a clamping groove is formed in the side wall of the ejector rod, one end of the limiting rod penetrates through the side wall of the air pressure cavity, one end of the limiting rod is clamped in the clamping groove, and the limiting rod abuts against the clamping groove to limit the movement of the ejector rod.

Compared with the prior art, the invention has the beneficial effects that:

1. when the trowel is contacted with aggregate gravels and the like, the trowel can rotate in the trowel frame by virtue of reaction force to extrude the first air bag, so that the compression rod retracts, gas in the first air bag is conveyed to the air pressure cavity through the connecting pipe, meanwhile, when the trowel rotates, the second movable rod can move to one side, so that the first sliding plate can be driven to slide in the first movable cavity, the hinged frame is deformed, the second air bag is extruded, gas in the second air bag is conveyed into the second movable cavity through the pair of air conveying pipes, the second sliding plate can move inwards, the clamping rod retracts from the chute, the limiting rod can move outwards under the action of the first movable rod, the limiting rod can be far away from the clamping groove, the ejector rod can be pushed outwards under the action of the air pressure cavity, the aggregate gravels and the like on the surface of cement are pushed into the cement, and the trouble of replacing the trowel and the trowel is avoided, the construction efficiency is improved;

2. the first air bag is reset under the action of the second spring, friction is generated between the friction plate and the friction block in the resetting process of the compression rod, vibration can be generated to a certain degree, meanwhile, the movable block and the elastic piece are extruded mutually to generate friction in the resetting process of the first movable rod, vibration can also be generated, the residual cement on the surface of the scraper can be shaken off, and the phenomenon that the cement is remained on the surface of the scraper after collision is avoided;

3. the jacking block generates an interaction force after being impacted with the aggregate, so that the elastic plate and the first spring can be driven to shake, cement at the bottom of the jacking rod can shake off, the cement is prevented from remaining at the bottom of the jacking rod, and the cement block is condensed at the bottom of the jacking rod after long-time use, so that the normal use of the trowelling device is influenced;

4. the position and the angle of the telescopic rod can be adjusted through the height of an operator, the handle is adjusted to the height convenient for the operator to operate, the labor intensity in the construction process can be reduced, and the construction efficiency of the operator is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the troweling mechanism of the present invention;

FIG. 3 is a schematic cross-sectional view of the spatula frame of the invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 according to the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 3 at B according to the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 3 at C according to the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 5 illustrating the present invention;

in the figure: 1. a trowelling machine body; 2. a troweling mechanism; 3. a smoothing knife; 11. a support frame; 12. a drive motor; 121. a rotating shaft; 13. a telescopic rod; 14. fixing the rod; 21. a turntable; 22. a knife rest is smeared; 23. a pneumatic chamber; 31. a fixing plate; 311. a scraper; 32. a first air bag; 321. a connecting pipe; 322. a compression rod; 33. a top rod; 331. an elastic plate; 332. a fixed block; 333. an extrusion stem; 334. a first spring; 335. a top block; 34. a hinged lever; 341. a movable ball; 342. a second spring; 343. a friction plate; 344. a friction block; 35. a first movable bar; 351. a movable block; 352. a second movable bar; 36. a limiting rod; 361. a card slot; 37. a second air bag; 371. a hinged frame; 372. a pressing plate; 373. a first slide plate; 374. a gas delivery pipe; 38. a first movable chamber; 39. a second movable chamber; 391. a second slide plate; 392. a clamping rod; 393. a connecting plate; 394. and a third spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides a cement trowelling device for road construction, including trowelling machine body 1, trowelling machine body 1 includes

support frame

11, 11 one end of support frame links firmly the mount, and rotate on the mount and be equipped with telescopic link 13, a pair of dead lever 14 of telescopic link 13 one end both sides fixedly connected with, fixedly connected with handle on the dead lever 14, and the cover is equipped with the rubber sleeve on hand, the rubber sleeve surface is equipped with anti-skidding line, fixedly connected with driving motor 12 on the support frame 11, fixed mounting has pivot 121 on the driving motor 12 output, pivot 121 bottom fixedly connected with trowelling mechanism 2, trowelling mechanism 2 includes carousel 21, carousel 21 is fixed to be set up in pivot 121 bottom, a plurality of trowelling tool holders 22 have been seted up on the carousel 21, install many trowelling knives 3 in the trowelling tool holder 22, trowelling knife 3 rotates and sets up in trowelling tool.

The troweling knife 3 comprises a fixed plate 31, a rotating rod is fixedly arranged in a troweling knife frame 22, the fixed plate 31 is rotatably arranged on the rotating rod, a scraper 311 is fixedly connected to the bottom of the fixed plate 31, a plurality of first air bags 32 are fixedly connected to the inner wall of one end of the troweling knife frame 22, the outer walls of the first air bags 32 abut against one side of the fixed plate 31, a plurality of air pressure cavities 23 are formed in the troweling knife frame 22, a connecting pipe 321 is connected between the air pressure cavities 23 and the first air bags 32, ejector rods 33 are slidably arranged in the air pressure cavities 23, a limiting groove is formed in the inner wall of the other end of the troweling knife frame 22, a limiting rod 36 is movably arranged in the limiting groove, a first movable rod 35 is inserted into one end of the limiting rod 36, a second movable rod 352 is arranged at one end of the first movable rod 35, one end of the second movable rod 352 is fixedly arranged on one side of the fixed plate 31, the first movable rod 35 is movably inserted into the second, the first air bladder 32 can be pressed so that the compression bar 322 can be retracted, and the gas inside the first air bladder 32 can be delivered to the pneumatic chamber 23 through the connection pipe 321.

Inside a pair of articulated arm 34 that is equipped with of first gasbag 32, articulated arm 34 articulates on spatula frame 22 inner wall, articulated arm 34 is inside to be inserted and to be equipped with compression bar 322, compression bar 322 one end fixed connection is on first gasbag 32 inner wall, compression bar 322 one end fixedly connected with movable ball 341, movable ball 341 one end fixedly connected with second spring 342, second spring 342 one end fixed connection is in articulated arm 34 inner wall bottom, second spring 342 can drive compression bar 322 outside removal after the extrusion disappears, make first gasbag 32 reset.

Fixedly connected with friction plate 343 on the articulated pole 34 inner wall, a plurality of clutch blocks 344 of fixedly connected with on the compression pole 322 lateral wall, and clutch blocks 344 offsets with friction plate 343, and at the compression pole 322 in-process that resets, produce the friction between friction plate 343 and the clutch blocks 344, can produce the vibrations of certain degree, shake off the remaining cement in scraper 311 surface, avoid scraper 311 to have cement to remain on the surface after colliding with.

A first movable cavity 38 and a second movable cavity 39 are formed in the limiting rod 36, a first sliding plate 373 is slidably arranged in the first movable cavity 38, one end of the first sliding plate 373 is fixedly connected to one end of the first movable rod 35, one end of the first sliding plate 373 is symmetrically connected with an extrusion plate 372, one end of the extrusion plate 372 is fixedly connected to the side wall of the first movable cavity 38, the other end of the first sliding plate 373 is fixedly connected with a hinge frame 371, a second air bag 37 is fixedly arranged in the hinge frame 371, one end of the second air bag 37 is fixedly connected with a pair of air pipes 374, one end of each air pipe 374 is fixedly connected to the side wall of the second movable cavity 39, a connecting plate 393 is fixedly connected to the inside of the second movable cavity 39, a plurality of third springs 394 are fixedly connected to the two ends of the connecting plate 393, one end of each third spring 394 is fixedly connected with a second sliding plate 391, a plurality of clamping rods 392 are fixedly connected to the second sliding plate 391, the, card pole 392 activity is inserted and is established in the through-hole, and the spacing inslot is equipped with a plurality of chutes, card pole 392 one end supports in the chute, when trowel 3 rotates, can make second movable rod 352 to a lateral movement, thereby can drive first slide 373 and slide in first activity chamber 38, make first slide 373 extrude stripper plate 372, make articulated frame 371 take place deformation, extrude second gasbag 37, the inside gas of second gasbag 37 is carried to second activity chamber 39 in through a pair of gas-supply pipe 374, can inwards move second slide 391, make card pole 392 follow the chute internal withdrawal, make gag lever post 36 can outwards move under the effect of first movable rod 35, gag lever post 36 can follow draw back in draw-in groove 361, can make ejector pin 33 outwards ejecting under the atmospheric pressure effect in atmospheric pressure chamber 23, push up aggregate rubble etc. in the cement.

First movable rod 35 one end fixedly connected with spring, and spring one end fixedly connected with movable block 351, movable block 351 slides and sets up in second movable rod 352, is equipped with a plurality of elastic components on the second movable rod 352 inner wall, and first movable rod 35 is restoring to the throne in-process movable block 351 and the mutual extrusion of elastic component produce the friction, also can produce vibrations, can shake off the remaining cement in scraper 311 surface.

The bottom fixedly connected with of ejector pin 33 has a pair of fixed block 332, ejector pin 33 bottom fixedly connected with stripper rod 333, ejector pin 33 bottom fixedly connected with kicking block 335, fixedly connected with elastic plate 331 between kicking block 335 and fixed block 332, first spring 334 of fixedly connected with on the kicking block 335 lateral wall, first spring 334 one end fixed connection is on the fixed block 332 lateral wall, kicking block 335 of ejector pin 33 bottom produces the interact power after striking with the aggregate, can drive elastic plate 331 and the shake of first spring 334, make ejector pin 33 bottom cement shake off, avoid cement to remain in ejector pin 33 bottom, long-time use can lead to the cement piece to condense in ejector pin 33 bottom.

The side wall of the ejector rod 33 is provided with a clamping groove 361, one end of the limiting rod 36 penetrates through the side wall of the air pressure cavity 23, one end of the limiting rod 36 is clamped in the clamping groove 361, and the limiting rod 36 abuts against the clamping groove 361 to limit the movement of the ejector rod 33.

The working principle is as follows: firstly, the position and the angle of the telescopic rod 13 are adjusted according to the height of an operator, the operation of the operator is convenient, then the troweling machine is started, the driving rotating shaft 121 provided by the driving motor 12 rotates, so that the rotating disc 21 can rotate, the troweling knife 3 can trowel the cement surface, when the scraper 311 is in contact with aggregate and broken stones and the like, the troweling machine can rotate in the troweling knife frame 22 by virtue of the reaction force, the first air bag 32 can be extruded, the compression rod 322 can be retracted, the gas in the first air bag 32 can be conveyed to the air pressure cavity 23 through the connecting pipe 321, meanwhile, when the troweling knife 3 rotates, the second movable rod 352 can move to one side, so that the first sliding plate 373 can be driven to slide in the first movable cavity 38, the first sliding plate 373 can be extruded on the extrusion plate 372, the hinged frame 371 can be deformed, the second air bag 37 can be extruded, the gas in the second air bag 37 can be conveyed to the second movable cavity 39 through the pair of gas conveying pipes 374, the second sliding plate 391 can move inwards, the clamping rod 392 can retract from the chute, the limiting rod 36 can move outwards under the action of the first movable rod 35, the limiting rod 36 can retract from the clamping groove 361, the ejector rod 33 can eject outwards under the action of air pressure in the air pressure cavity 23, aggregate broken stones on the surface of cement and the like are ejected into the cement, after the reaction force from the aggregate broken stones disappears, the first air bag 32 resets under the action of the second spring 342, meanwhile, in the resetting process of the compression rod 322, friction is generated between the friction plate 343 and the friction block 344, vibration of a certain degree can be generated, the residual cement on the surface of the scraper 311 is shaken off, the phenomenon that the cement is remained on the surface after the scraper 311 is collided is avoided, the air in the air pressure cavity 23 is reduced after backflow, the ejector rod 33 can reset, the top block 335 at the bottom of the ejector rod 33 generates interaction force after being collided with the aggregate, can drive elastic plate 331 and the shake of first spring 334, make ejector pin 33 bottom cement shake off, avoid cement to remain in ejector pin 33 bottom, long-time use can lead to the cement piece to condense in ejector pin 33 bottom, first movable rod 35 makes first slide 373 inwards move at the in-process that resets simultaneously, can make articulated frame 371 deformation, produce the extrusion to second gasbag 37, thereby produce the extrusion to second slide 391, make the withdrawal of kelly 392, be convenient for gag lever post 36 resets, make gag lever post 36 one end support in draw-in groove 361 again, first slide 373 can reset under the effect of stripper plate 372, make the inside gas in second activity chamber 39 return to in the second gasbag 37, make kelly 392 support at the spacing inslot again, restriction gag lever post 36 moves.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a cement trowelling device for road construction, includes trowelling machine body (1), its characterized in that: the trowelling machine body (1) comprises a support frame (11), one end of the support frame (11) is fixedly connected with a fixed frame, and the fixed frame is rotatably provided with a telescopic rod (13), two sides of one end of the telescopic rod (13) are fixedly connected with a pair of fixed rods (14), the fixed rods (14) are fixedly connected with a handle, a rubber sleeve is sleeved on the handle, a driving motor (12) is fixedly connected on the supporting frame (11), a rotating shaft (121) is fixedly arranged on the output end of the driving motor (12), the bottom of the rotating shaft (121) is fixedly connected with a floating mechanism (2), the floating mechanism (2) comprises a rotary disc (21), the rotary disc (21) is fixedly arranged at the bottom of the rotating shaft (121), the rotary table (21) is provided with a plurality of trowel holders (22), a plurality of trowel knives (3) are installed in the trowel holders (22), and the trowel knives (3) are rotatably arranged in the trowel holders (22).

2. The cement troweling device for road construction according to claim 1, characterized in that: the trowelling knife (3) comprises a fixing plate (31), a rotating rod is fixedly arranged inside the trowelling knife rest (22), the fixing plate (31) is rotatably arranged on the rotating rod, a scraper (311) is fixedly connected to the bottom of the fixing plate (31), a plurality of first air bags (32) are fixedly connected to the inner wall of one end of the trowelling knife rest (22), the outer wall of each first air bag (32) abuts against one side of the fixing plate (31), a plurality of air pressure cavities (23) are formed in the trowelling knife rest (22), a connecting pipe (321) is connected between each air pressure cavity (23) and the corresponding first air bag (32), a push rod (33) is arranged in each air pressure cavity (23) in a sliding mode, a limiting groove is formed in the inner wall of the other end of the trowelling knife rest (22), a limiting rod (36) is movably arranged in the limiting groove, a first movable rod (35) is inserted into one end of the limiting rod (36), and a second movable rod (, one end of the second movable rod (352) is fixedly arranged on one side of the fixed plate (31), and the first movable rod (35) is movably inserted into the second movable rod (352).

3. The cement troweling device for road construction according to claim 2, characterized in that: first gasbag (32) inside is equipped with a pair of hinge bar (34), hinge bar (34) articulate on spatula frame (22) inner wall, hinge bar (34) inside is inserted and is equipped with compression pole (322), compression pole (322) one end fixed connection is on first gasbag (32) inner wall, compression pole (322) one end fixedly connected with activity ball (341), activity ball (341) one end fixedly connected with second spring (342), second spring (342) one end fixed connection is in hinge bar (34) inner wall bottom.

4. The device of claim 3, wherein: the inner wall of the hinged rod (34) is fixedly connected with a friction plate (343), the side wall of the compression rod (322) is fixedly connected with a plurality of friction blocks (344), and the friction blocks (344) are abutted against the friction plate (343).

5. The cement troweling device for road construction according to claim 2, characterized in that: a first movable cavity (38) and a second movable cavity (39) are formed in the limiting rod (36), a first sliding plate (373) is arranged in the first movable cavity (38) in a sliding mode, one end of the first sliding plate (373) is fixedly connected to one end of the first movable rod (35), one end of the first sliding plate (373) is symmetrically connected with an extrusion plate (372), one end of the extrusion plate (372) is fixedly connected to the side wall of the first movable cavity (38), the other end of the first sliding plate (373) is fixedly connected with a hinged frame (371), a second air bag (37) is fixedly arranged in the hinged frame (371), one end of the second air bag (37) is fixedly connected with a pair of air pipes (374), one end of each air pipe (374) is fixedly connected to the side wall of the second movable cavity (39), a connecting plate (393) is fixedly connected in the second movable cavity (39), and a plurality of third springs (394) are fixedly connected to two ends of the connecting plate (393), one end of the third spring (394) is fixedly connected with a second sliding plate (391), the second sliding plate (391) is fixedly connected with a plurality of clamping rods (392), the surface of each clamping rod (392) is made of rubber, a plurality of through holes are formed in the side wall of the second movable cavity (39), each clamping rod (392) is movably inserted into each through hole, a plurality of inclined grooves are formed in the limiting grooves, and one end of each clamping rod (392) abuts against each inclined groove.

6. The cement troweling device for road construction according to claim 2, characterized in that: first movable rod (35) one end fixedly connected with spring, and spring one end fixedly connected with movable block (351), movable block (351) slide to set up in second movable rod (352), be equipped with a plurality of elastic components on second movable rod (352) inner wall.

7. The cement troweling device for road construction according to claim 2, characterized in that: a pair of fixed block (332) of ejector pin (33) bottom fixedly connected with, ejector pin (33) bottom fixedly connected with stripper rod (333), ejector pin (33) bottom fixedly connected with kicking block (335), fixedly connected with elastic plate (331) between kicking block (335) and fixed block (332), first spring (334) of fixedly connected with on kicking block (335) lateral wall, first spring (334) one end fixed connection is on fixed block (332) lateral wall.

8. The cement troweling device for road construction according to claim 2, characterized in that: the side wall of the ejector rod (33) is provided with a clamping groove (361), one end of the limiting rod (36) penetrates through the side wall of the air pressure cavity (23), and one end of the limiting rod (36) is clamped in the clamping groove (361).