CN213358221U - Building construction auxiliary device - Google Patents

Abstract

The utility model discloses a construction auxiliary device, which comprises a carriage body, the wheel is equipped with to the automobile body downside, the mounting hole is established to the automobile body upside, the hopper is equipped with in the mounting hole, be equipped with the push away piece valve at the hopper lower extreme, can control the hopper through the push away piece valve and seal or open, at hopper upside fixed connection apron, the agitator motor is equipped with in apron side center department, the vertical downward setting of agitator motor's main shaft runs through the apron and stretches into to the hopper in, coaxial fixed connection (mixing) shaft on agitator motor's main shaft is equipped with a plurality of puddlers on the (mixing) shaft, the side is equipped with the feed port on the apron. The utility model provides a pair of construction auxiliary device is used for laying the ceramic tile and uses, can pave cement mortar and level and smooth in order to supply follow-up ceramic tile of laying to use, and can make the cement mortar upper surface after paving coarse, has avoided follow-up process of napping to it, improves and lays efficiency.

Description

Building construction auxiliary device

Technical Field

The utility model relates to a building engineering equipment technical field especially relates to a construction auxiliary device.

Background

At the present stage, when the floor tiles are paved, a manual paving method is still mainly adopted, a large amount of labor cost is consumed, and for a longer working face, the problems that cement mortar cannot be leveled by manual paving, the end is piled up and needs to be constructed back and forth, and the like often occur, so that the progress of most projects is slow, and the requirement of the construction period cannot be met. Although some devices can flatten cement mortar, after flattening, a galling tool is still needed to flatten the upper surface of the cement mortar, and the construction efficiency is still not high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a building construction auxiliary device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a building construction auxiliary device comprises a vehicle body, wherein wheels are arranged on the lower side of the vehicle body, a mounting hole is formed in the upper side of the vehicle body, a hopper is arranged in the mounting hole, a push sheet valve is arranged at the lower end of the hopper, the hopper can be controlled to be closed or opened through the push sheet valve, a cover plate is fixedly connected to the upper side of the hopper, a stirring motor is arranged in the center of the upper side of the cover plate, a main shaft of the stirring motor is vertically arranged downwards and penetrates through the cover plate to extend into the hopper, a stirring shaft is coaxially and fixedly connected to the main shaft of the stirring motor, a plurality of stirring rods are arranged on the stirring shaft;

a uniform spreading device is arranged below the vehicle body, the uniform spreading device comprises a sliding plate, the sliding plate can horizontally slide below the vehicle body, a walking device used for controlling the sliding plate to horizontally move is also arranged below the vehicle body, two vertically arranged sliding holes are arranged on the upper side of the sliding plate, a first sliding rod is connected in one sliding hole in a sliding manner, a first walking wheel is fixedly connected at the upper end of the first sliding rod, a first spring is fixedly connected between the first walking wheel and the sliding plate, the first sliding rod penetrates through the first spring, a scraping plate is arranged at the lower end of the first sliding rod, a second sliding rod is connected in the other sliding hole in a sliding manner, a second walking wheel is fixedly connected at the upper end of the second sliding rod, a second spring is fixedly connected between the second walking wheel and the sliding plate, the second sliding rod penetrates through the second spring, a waved guide rail is fixedly connected at the lower side of the vehicle body, the second walking wheel is arranged corresponding to the waved guide, rotate downthehole rotation and connect the transmission shaft, the first gear of one end fixed connection of transmission shaft towards the second slide bar, at the first rack of second slide bar one side fixed connection, first rack meshes with first gear mutually, is equipped with a plurality of openings of stepping down at the scraper blade downside, every opening of stepping down all communicates with rotation hole mutually, at a plurality of swing pieces of transmission shaft outside fixed connection, swing piece one-to-one sets up in the opening of stepping down.

Preferably, running gear includes two parallel arrangement's riser, and two risers are all fixed at the automobile body downside, and fixed connection guiding axle between two risers rotates between two risers and connects the lead screw, is equipped with in one of them riser one side and is used for controlling lead screw pivoted walking motor, and slide one side is equipped with guiding hole and screw hole, and the guiding axle passes in the guiding hole, and the lead screw is at screw hole female connection, and the slide can follow the reciprocating sliding of guiding axle through the guiding hole.

Preferably, be equipped with the spout of falling T shape on the scraper blade upside, sliding connection slider of falling T shape in the spout of falling T shape, first slide bar lower extreme and slider fixed connection of falling T shape, at the spout of falling T shape wherein one end inner wall and the slider of falling T shape between fixed connection third spring, the scraper blade can use first slide bar as the reciprocal slip of benchmark level through the slider of falling T shape, the scraper blade is towards one side fixed connection horizontal pole of second slide bar, keep away from the columniform kicking block of one end fixed connection of scraper blade at the horizontal pole, evenly be equipped with a plurality of semicylindrical lugs in one side of second slide bar towards the horizontal pole, the kicking block sets up with the lug is corresponding.

Preferably, the transmission shaft includes first transfer line and the second transfer line of coaxial setting, first transfer line is fixed in first gear one side, the second transfer line rotates the downthehole connection that rotates, be equipped with the circular recess at the second transfer line towards the one end of first transfer line, first transfer line one end sets up in the circular recess and can follow the axis direction reciprocating sliding of circular recess, the symmetry is equipped with two draw-in grooves on the second transfer line, the draw-in groove is linked together with the circular recess, two bayonet locks of symmetry fixed connection on first transfer line, two bayonet lock one-to-ones set up in two draw-in grooves, the bayonet lock can follow the draw-in groove reciprocating sliding.

Preferably, both ends of the first gear are fixedly connected with limiting discs, and the two limiting discs are respectively arranged on both sides of the first rack and are in contact with the first rack.

Preferably, fixed connection is through a set of support column fixed connection roof at automobile body upside, is equipped with the hole of stepping down on the roof upside, and the hopper setting is downthehole at stepping down.

Preferably, a handle is fixedly connected to one side of the vehicle body or the roof panel.

Preferably, a circular hole is formed in one side of the sliding plate, the pushing device is connected to the circular hole in a sliding mode and comprises a push rod, the push rod is arranged in the circular hole and can slide in a reciprocating mode along the circular hole, a push plate is arranged at the lower end of the push rod, a second rack is fixedly connected to one side of the push rod, a hanging frame is fixedly connected to the lower side of the sliding plate, the lower end of the hanging frame is rotatably connected with a second gear, a third rack is fixedly connected to one side of the first sliding rod, and the third rack and the second rack are meshed with the second.

Preferably, the articulated seat of push pedal one side middle part fixed connection, articulated seat and push rod lower extreme are articulated mutually, and the push rod rotates with the push pedal through articulated seat to be connected, at push pedal one side fixed connection pull rod, is equipped with the picture peg in pull rod one side, slide downside fixed connection limiting plate, and limiting plate one side is equipped with a plurality of slots, and the picture peg sets up with the slot is corresponding.

Preferably, each slot side all is equipped with convex hindrance groove, at picture peg one side fixed connection inserted block, inserted block and the corresponding setting in hindrance groove.

The utility model has the advantages that: the utility model provides a pair of construction auxiliary device is used for laying the ceramic tile and uses, can pave cement mortar and level and smooth in order to supply follow-up ceramic tile of laying to use, and can make the cement mortar upper surface after paving coarse, has avoided follow-up process of napping to it, improves and lays efficiency.

Drawings

Fig. 1 is a schematic diagram of the basic structure of the present invention;

FIG. 2 is a sectional view A-A of FIG. 1;

FIG. 3 is an enlarged view of section E of FIG. 2;

FIG. 4 is an enlarged view of portion G of FIG. 2;

FIG. 5 is a perspective view of FIG. 3;

FIG. 6 is a schematic view of a connection structure of a guide rail and a second road wheel;

FIG. 7 is a schematic view of the basic structure of a propeller shaft;

FIG. 8 is a schematic view of the basic structure of the pusher;

FIG. 9 is an enlarged view of portion H of FIG. 8;

fig. 10 is an enlarged view of the portion Y in fig. 9.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1-10, the utility model provides a pair of construction auxiliary device, including automobile body 1, wheel 11 is equipped with to 1 downside of automobile body, and wheel 11 adopts the universal wheel, conveniently removes automobile body 1 through the universal wheel, and the mounting hole is established to 1 upside of automobile body, is equipped with hopper 3 in the mounting hole, is equipped with push away piece valve 4 at 3 lower extremes of hopper, and push away piece valve 4 is prior art, can control hopper 3 through push away piece valve 4 and seal or open, and concrete mounting means and theory of operation are no longer repeated here. The upper side of the hopper 3 is fixedly connected with a cover plate 31, the center of the upper side of the cover plate 31 is provided with a stirring motor 33, a main shaft of the stirring motor 33 is vertically arranged downwards and penetrates through the cover plate 31 to extend into the hopper 3, a stirring shaft 34 is coaxially and fixedly connected with the main shaft of the stirring motor 33, the stirring shaft 34 is provided with a plurality of stirring rods 35, and the upper side of the cover plate 31 is provided with a feeding hole 32.

The paving device 2 is arranged below the vehicle body 1, the paving device 2 comprises a sliding plate 21, the sliding plate 21 can horizontally slide below the vehicle body 1, a walking device for controlling the sliding plate 21 to horizontally move is further arranged below the vehicle body 1, two vertically arranged sliding holes are arranged on the upper side of the sliding plate 21, a first sliding rod 22 is connected in one sliding hole in a sliding manner, a first travelling wheel 221 is fixedly connected at the upper end of the first sliding rod 22, a first spring 222 is fixedly connected between the first travelling wheel 221 and the sliding plate 21, the first sliding rod 22 penetrates through the first spring 222, a scraping plate 24 is arranged at the lower end of the first sliding rod 22, a second sliding rod 23 is connected in the other sliding hole in a sliding manner, a second travelling wheel 231 is fixedly connected at the upper end of the second sliding rod 23, a second spring 232 is fixedly connected between the second travelling wheel 231 and the sliding plate 21, the second sliding rod 23 penetrates through the second spring 232, and a guide rail 19 with a wave-shaped lower surface, the second traveling wheels 231 are arranged corresponding to the wavy guide rails 19, a rotating hole is formed in one side, facing the second sliding rod 23, of the scraper 24, a transmission shaft 245 is connected in the rotating hole in a rotating mode, one end, facing the second sliding rod 23, of the transmission shaft 245 is fixedly connected with a first gear 247, one side of the second sliding rod 23 is fixedly connected with a first rack 248, the first rack 248 is meshed with the first gear 247, a plurality of abdicating openings 244 are formed in the lower side of the scraper 24, each abdicating opening 244 is communicated with the rotating hole, a plurality of swinging blocks 246 are fixedly connected to the outer side of the transmission shaft 245, and the swinging blocks 246 are arranged in the abdicating openings 244 in a one-to-one correspondence.

When the device is used, cement mortar is added into the hopper 3 through the feeding hole 32, the stirring shaft 34 is driven to rotate through the stirring motor 33, the cement mortar is stirred through the stirring rod 35, the cement mortar is prevented from caking, the push sheet valve 4 is opened, the cement mortar is discharged from the lower end of the hopper 3 under the action of self gravity and the extrusion force of the stirring rod 35, then the push sheet valve 4 is closed, the sliding plate 21 is controlled to horizontally slide below the vehicle body 1 through the walking device, so that the above-ground cement mortar is uniformly spread through the scraper 24, in the process that the sliding plate 21 horizontally slides below the vehicle body 1, the second walking wheel 231 moves on the guide rail 19, as the lower surface of the guide rail 19 is in a wave shape, the second sliding rod 23 can move up and down under the action of the second spring 232, in the process that the second sliding rod 23 moves up and down, the first rack 248 can be driven to move up and, first gear 247 can reciprocate because of first rack 248 reciprocates and rotates to drive transmission shaft 245 and rotate at the downthehole reciprocating of rotating, swing piece 246 also along with transmission shaft 245 reciprocating swing, at swing piece 246 swing in-process, can block up the opening 244 of stepping down for a while, make the opening 244 of stepping down again for a while be in open state, at the in-process of spreading cement mortar like this, can make the cement mortar upper surface after spreading form the mat surface, can make the cement mortar inseparabler firm with the laminating of ceramic tile lower surface like this when the ceramic tile is pasted.

As a preferred embodiment of the utility model, running gear includes two parallel arrangement's riser 16, two risers 16 are all fixed at automobile body 1 downside, fixed connection guiding axle 17 between two risers 16, rotate between two risers 16 and connect the lead screw, be equipped with in one of them riser 16 one side and be used for controlling lead screw pivoted walking motor 18, slide 21 one side is equipped with guiding hole 211 and screw hole 212, guiding axle 17 passes from the guiding hole 211 in, the lead screw is at screw hole 212 internal thread connection, slide 21 can follow guiding axle 17 reciprocating sliding through guiding hole 211. The sliding plate 21 is driven by the walking motor 18 to horizontally slide below the vehicle body 1, so that the sliding plate can move at a constant speed, and the moving distance is accurate.

As a preferred embodiment of the present invention, be equipped with the spout 241 of falling T shape on scraper 24 upside, sliding connection slider 242 of falling T shape in the spout 241 of falling T shape, first slide bar 22 lower extreme and the slider 242 fixed connection of falling T shape, at the third spring 243 of fixed connection between the slider 242 of falling T shape of the spout 241 of falling T shape one of them one end inner wall of spout 241 of falling T shape and the slider 242 of falling T shape, scraper 24 can use first slide bar 22 as the benchmark level through slider 242 of falling T shape to reciprocate to slide, scraper 24 is towards one side fixed connection horizontal pole 26 of second slide bar 23, keep away from the columniform kicking block 261 of one end fixed connection of scraper 24 at horizontal pole 26, evenly be equipped with a plurality of semicylindrical lugs 262 in one side of second slide bar 23 towards horizontal pole 26, kicking block 261 sets up with. Since the second slide bar 23 is continuously moved up and down, the top block 261 slides along the projection 262, and the scraper 24 is driven by the third spring 243 to slide back and forth horizontally with respect to the first slide bar 22. Can control like this and let opening 244 longitudinal reciprocating motion, can make the mat surface of cement mortar upper surface more irregular at the in-process of paving, further improve the adhesion of cement mortar and ceramic tile lower surface.

As a preferred embodiment of the present invention, the transmission shaft 245 includes a first transmission rod 2451 and a second transmission rod 2452 coaxially disposed, the first transmission rod 2451 is fixed on one side of the first gear 247, the second transmission rod 2452 is rotatably connected in the rotation hole, a circular groove 2453 is disposed at one end of the second transmission rod 2452 facing the first transmission rod 2451, one end of the first transmission rod 2451 is disposed in the circular groove 2453 and can slide along the axis direction of the circular groove 2453, two clamping grooves 2454 are symmetrically disposed on the second transmission rod 2452, the clamping grooves 2454 are communicated with the circular groove 2453, two clamping pins 2455 are symmetrically and fixedly connected to the first transmission rod 2451, the two clamping pins 2455 are correspondingly disposed in the two clamping grooves 2454, and the clamping grooves 2454 can slide along the axial direction. During the horizontal reciprocating movement of the blade 24, the first driving lever 2451 and the second driving lever 2452 can be extended and contracted.

As a preferred embodiment of the present invention, both ends of the first gear 247 are fixedly connected to the limiting discs 2471, and the two limiting discs 2471 are respectively disposed on both sides of the first rack 248 and contact with the first rack 248. The first gear 247 is always positioned on the first rack 248 through the two limiting discs 2471, so that the first gear 247 is prevented from being separated from the first rack 248 to generate a collision phenomenon in the process of horizontal reciprocating movement of the scraper 24.

As a preferred embodiment of the utility model, at 1 upside fixed connection of automobile body through a set of support column 12 fixed connection roof 13, be equipped with the hole of stepping down on roof 13 upside, hopper 3 sets up downtheholely stepping down. Hopper 3 can be reinforced by top plate 13 to prevent hopper 3 from shaking during the mixing process.

As a preferred embodiment of the present invention, a handle is fixedly connected to the vehicle body 1 or the roof panel 13. This construction auxiliary assembly is conveniently removed through the handle.

As a preferred embodiment of the present invention, be equipped with convex foundation ditch groove 10 at automobile body 1 downside, foundation ditch groove 10 sets up on the walking route of first walking wheel 221, when slide 21 moved to guiding axle 17 end, first walking wheel 221 just in time is in foundation ditch groove 10, be equipped with the round hole that the slope set up in slide 21 one side, sliding connection blevile of push 25 in the round hole, blevile of push 25 includes push rod 251, push rod 251 sets up in the round hole and can follow the round hole and reciprocate to slide, be equipped with push pedal 253 at push rod 251 lower extreme, push rod 251 one side fixed connection second rack 255, slide 21 downside fixed connection gallows, the gallows lower extreme rotates and connects second gear 254, at first slide 22 one side fixed connection third rack 223, second rack 255 all meshes with second gear 254. In the first running wheel 221 can slide down to the foundation pit groove 10 under the elastic force effect of the first spring 222, in the process, the first slide bar 22 can move upwards, the first slide bar 22 drives the second gear 254 to rotate clockwise through the third rack 223, the second gear 254 drives the second rack 255 to move downwards, so that the push rod 251 is driven to slide downwards along the circular hole, the surplus cement mortar is pushed into the left side of the scraper 24, and the surplus cement mortar is flattened in the process of resetting the scraper 24 leftwards.

As a preferred embodiment of the utility model, for the better left side that pushes scraper blade 24 with unnecessary cement mortar, the articulated seat 252 of push pedal 253 one side middle part fixed connection, articulated seat 252 is articulated mutually with push rod 251 lower extreme, be equipped with the torsional spring between articulated seat 252 and the push rod 251, the torsional spring is not drawn in the picture, push rod 251 rotates with push pedal 253 through articulated seat 252 and is connected, at push pedal 253 one side fixed connection pull rod 257, be equipped with picture peg 2571 in pull rod 257 one side, slide 21 downside fixed connection limiting plate 256, limiting plate 256 one side is equipped with a plurality of slots 2561, picture peg 2571 and the corresponding setting of slot 2561. When the push rod 251 moves downwards, the push plate 253 and the pull rod 257 also move downwards, in the downward movement process of the pull rod 257, the inserting plate 2571 is clamped in the slot 2561 to generate upward pulling force on the pull rod 257, so that the torsion spring generates torsion, when the inserting plate 2571 is separated from the slot 2561, the torsion spring can restore the free state, the push plate 253 rotates under the torsion action of the torsion spring, and in the rotation process of the push plate 253, the impact force can be generated on redundant cement mortar, so that the redundant cement mortar can be better pushed into the left side of the scraper 24.

As a preferred embodiment of the present invention, in order to further increase the insertion plate 2571, the pull rod 257 generates an upward pulling force, so that the torsion of the torsion spring becomes large, the slot 2561 is provided with a blocking slot 2562, and the insertion block 2572 is fixedly connected to the insertion plate 2571, and the insertion block 2572 and the blocking slot 2562 are correspondingly disposed. The insert 2571 is more difficult to separate from the slot 2561 through the insert 2572 and the blocking slot 2562, so that the torsion of the torsion spring is improved.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. The utility model provides a construction auxiliary device which characterized in that: the automatic feeding device comprises a vehicle body (1), wheels (11) are mounted on the lower side of the vehicle body (1), a mounting hole is formed in the upper side of the vehicle body (1), a hopper (3) is mounted in the mounting hole, a push sheet valve (4) is arranged at the lower end of the hopper (3), the hopper (3) can be controlled to be closed or opened through the push sheet valve (4), a cover plate (31) is fixedly connected to the upper side of the hopper (3), a stirring motor (33) is mounted at the center of the upper side of the cover plate (31), a main shaft of the stirring motor (33) is vertically arranged downwards and penetrates through the cover plate (31) to extend into the hopper (3), a stirring shaft (34) is coaxially and fixedly connected to the main shaft of the stirring motor (33), a plurality of stirring rods (35) are mounted on the stirring shaft (34;

a uniform spreading device (2) is arranged below a vehicle body (1), the uniform spreading device (2) comprises a sliding plate (21), the sliding plate (21) can horizontally slide below the vehicle body (1), a walking device for controlling the sliding plate (21) to horizontally move is further arranged below the vehicle body (1), two vertically arranged sliding holes are arranged on the upper side of the sliding plate (21), a first sliding rod (22) is connected in one sliding hole in a sliding manner, a first walking wheel (221) is fixedly connected to the upper end of the first sliding rod (22), a first spring (222) is fixedly connected between the first walking wheel (221) and the sliding plate (21), the first sliding rod (22) penetrates through the first spring (222), a scraping plate (24) is arranged at the lower end of the first sliding rod (22), a second sliding rod (23) is connected in the other sliding hole in a sliding manner, a second walking wheel (231) is fixedly connected to the upper end of the second sliding rod (23), and a second spring (232) is fixedly connected between the second walking wheel (231) and the sliding plate, the second sliding rod (23) penetrates through the second spring (232), a guide rail (19) with a wave-shaped lower surface is fixedly connected to the lower side of the vehicle body (1), the second travelling wheel (231) is arranged corresponding to the wave-shaped guide rail (19), a rotating hole is arranged on one side of the scraper (24) facing the second sliding rod (23), a transmission shaft (245) is rotatably connected in the rotating hole, one end of the transmission shaft (245) facing the second sliding rod (23) is fixedly connected with a first gear (247), one side of the second sliding rod (23) is fixedly connected with a first rack (248), the first rack (248) is meshed with a first gear (247), a plurality of abdicating openings (244) are arranged at the lower side of the scraper (24), each abdicating opening (244) is communicated with the rotating hole, a plurality of swinging blocks (246) are fixedly connected to the outer side of the transmission shaft (245), and the swinging blocks (246) are correspondingly arranged in the abdicating openings (244) one by one.

2. A construction aid according to claim 1, characterised in that: running gear includes two parallel arrangement's riser (16), two risers (16) are all fixed at automobile body (1) downside, fixed connection guiding axle (17) between two risers (16), rotate between two risers (16) and connect the lead screw, be equipped with in one of them riser (16) one side and be used for controlling lead screw pivoted walking motor (18), slide (21) one side is equipped with guiding hole (211) and screw hole (212), guiding axle (17) are passed in following guiding hole (211), the lead screw is at screw hole (212) female connection, slide (21) can follow guiding axle (17) reciprocating slide through guiding hole (211).

3. A construction aid according to claim 1, characterised in that: the upper side of the scraping plate (24) is provided with an inverted T-shaped sliding groove (241), an inverted T-shaped sliding block (242) is connected in the inverted T-shaped sliding groove (241) in a sliding mode, the lower end of the first sliding rod (22) is fixedly connected with the inverted T-shaped sliding block (242), a third spring (243) is fixedly connected between the inner wall of one end of the inverted T-shaped sliding groove (241) and the inverted T-shaped sliding block (242), the scraping plate (24) can horizontally slide in a reciprocating mode by taking the first sliding rod (22) as a reference through the inverted T-shaped sliding block (242), the side, facing the second sliding rod (23), of the scraping plate (24) is fixedly connected with the cross rod (26), one end, far away from the scraping plate (24), of the cross rod (26) is fixedly connected with a cylindrical top block (261), one side, facing the cross rod (26), of the second sliding rod (23) is evenly provided with a.

4. A construction aid according to claim 1, characterised in that: the transmission shaft (245) comprises a first transmission rod (2451) and a second transmission rod (2452) which are coaxially arranged, the first transmission rod (2451) is fixed on one side of a first gear (247), the second transmission rod (2452) is rotatably connected in a rotating hole, a circular groove (2453) is formed in one end, facing the first transmission rod (2451), of the second transmission rod (2452), one end of the first transmission rod (2451) is arranged in the circular groove (2453) and can slide in a reciprocating mode along the axial direction of the circular groove (2453), two clamping grooves (2454) are symmetrically formed in the second transmission rod (2452), the clamping grooves (2454) are communicated with the circular groove (2453), two clamping pins (2455) are symmetrically and fixedly connected to the first transmission rod (2451), the two clamping pins (2455) are correspondingly arranged in the two clamping grooves (2454) one by one, and the clamping pins (2455) can slide in a reciprocating mode along the clamping grooves (2454).

5. A construction aid according to claim 4 wherein: both ends of the first gear (247) are fixedly connected with limiting discs (2471), and the two limiting discs (2471) are respectively arranged on both sides of the first rack (248) and are in contact with the first rack (248).

6. A construction aid according to claim 1, characterised in that: fixed connection is through a set of support column (12) fixed connection roof (13) at automobile body (1) upside, is equipped with the hole of stepping down on roof (13) upside, and hopper (3) set up in the hole of stepping down.

7. A construction aid according to claim 6 wherein: a handle is fixedly connected with one side of the vehicle body (1) or the top plate (13).

8. A construction aid according to claim 1, characterised in that: be equipped with the round hole that the slope set up in slide (21) one side, sliding connection blevile of push (25) in the round hole, blevile of push (25) include push rod (251), push rod (251) set up in the round hole and can follow the round hole reciprocating sliding, be equipped with push pedal (253) at push rod (251) lower extreme, push rod (251) one side fixed connection second rack (255), slide (21) downside fixed connection gallows, the gallows lower extreme rotates and connects second gear (254), at first slide bar (22) one side fixed connection third rack (223), second rack (255) all mesh mutually with second gear (254).

9. A construction aid according to claim 1, characterised in that: push pedal (253) one side middle part fixed connection articulates seat (252), it is articulated mutually with push rod (251) lower extreme to articulate seat (252), push rod (251) are rotated with push pedal (253) through articulating seat (252) and are connected, at push pedal (253) one side fixed connection pull rod (257), be equipped with picture peg (2571) in pull rod (257) one side, slide (21) downside fixed connection limiting plate (256), limiting plate (256) one side is equipped with a plurality of slots (2561), picture peg (2571) and slot (2561) corresponding setting.

10. A construction aid according to claim 9, wherein: one side of each slot (2561) is provided with a circular arc-shaped blocking groove (2562), one side of each inserting plate (2571) is fixedly connected with an inserting block (2572), and the inserting block (2572) and the blocking groove (2562) are arranged correspondingly.

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