Concrete automatic leveling device and construction method in narrow space of pipe culvert

Abstract

The application belongs to the technical field of concrete leveling and discloses a pipe culvert inner narrow space concrete automatic leveling device and a construction method. The device comprises a base mechanism fixed on a pipeline, a leveling mechanism for leveling concrete in the pipeline and an assembling mechanism for assembling the leveling mechanism are arranged on the base mechanism. The motor drives the rotating screw rod and the leveling mechanism to realize automatic exhaust and flattening of the concrete, and the device is especially suitable for continuous operation of long-distance or large-diameter pipe culverts. The combined sliding frame, rotating screw rod and leveling mechanism can be flexibly adjusted in length according to the depth of the pipe culvert, and support synchronous work of multiple leveling mechanisms, so as to adapt to the construction requirements of pipe culverts of different specifications. The exhaust module is designed with differential threads, that is, the dense threads are pressed down and the sparse threads are lifted up, so that the ejector pin is slowly pulled out after being quickly inserted into the concrete, air bubbles are effectively exhausted, and the cavity and honeycomb pitted surface are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete leveling, in particular to a concrete automatic leveling device for narrow space in pipe culvert and a construction method. BACKGROUND

[0002] In municipal engineering, water conservancy engineering and underground pipe gallery construction, the concrete pouring quality of pipe culvert structure directly affects its bearing capacity and durability. However, the internal space of pipe culvert is narrow, especially for large diameter or super long pipe culvert, the traditional manual concrete leveling method has many problems: low construction efficiency, manual operation is limited by space, it needs to repeatedly enter and exit the pipe culvert to adjust the concrete surface, which is time-consuming and labor-intensive, and it is difficult to meet the demand of large-scale construction; poor leveling accuracy, depending on the experience of workers, the concrete surface is prone to uneven, affecting the strength and waterproof performance of pipe culvert structure; difficult to exhaust, the internal bubbles are difficult to effectively exhaust after concrete pouring, which is easy to form cavity or honeycomb surface, reducing the structure density; insufficient adaptability, the traditional equipment is difficult to adapt to pipe culverts of different diameters or depths, and the tools need to be frequently replaced, increasing the construction complexity.

[0003] At present, most of the existing concrete leveling devices are designed for open space (such as floor pouring), and there are few automatic devices for narrow space in pipe culvert. Some devices use fixed scrapers or vibration pressing, but they are not modular and lack quick disassembly and assembly functions, and cannot be flexibly expanded according to the length of the pipe culvert.

[0004] Therefore, an integrated and modular automatic leveling device is needed, which can efficiently complete concrete exhaust and pressing in narrow pipe culvert space and adapt to construction requirements of different diameters and depths. SUMMARY

[0005] The purpose of the present application is to provide a concrete automatic leveling device for narrow space in pipe culvert and a construction method to solve the problems raised in the background.

[0006] To solve the above technical problems, the technical scheme adopted by the present application is as follows: a concrete automatic leveling device for narrow space in pipe culvert, comprising a base mechanism fixed on the pipe, the base mechanism comprising a connecting frame, a leveling mechanism for leveling the concrete in the pipe and an assembly mechanism for assembling the leveling mechanism are arranged on the base mechanism;

[0007] The base mechanism further comprises a plurality of sliding frames, a rotating lead screw and a connecting ring fixedly installed on the connecting frame, the connecting ring is fixedly installed on the end of the pipe, the rotating lead screw is driven by an external motor, connecting heads are fixedly installed at both ends of the rotating lead screw, a rotating ring is rotatably installed in the sliding frame, the rotating ring is detachably installed with the connecting head, an inner track is slidably installed on the connecting ring, a plurality of side moving frames are fixedly installed on the inner track, side wheels and lower wheels are rotatably installed on the side moving frames, the side wheels and the lower wheels roll on the inner wall of the pipe, and the sliding frame slides in the inner track.

[0008] Further, the leveling mechanism comprises an internally threaded frame, a moving frame fixedly installed on the internally threaded frame, the internally threaded frame being in threaded transmission with the rotating lead screw, a side butt joint block fixedly installed on the moving frame, a sliding seat slidingly installed on the moving frame, a clamping block fixedly installed on the sliding seat, a clamping spring arranged between the sliding seat and the moving frame, and a butt joint groove arranged on the moving frame for butt joint with the side butt joint block.

[0009] Further, three front clamping heads are fixedly installed on the moving frame, a plurality of front clamping blocks are slidingly installed on the front clamping heads, clamping block springs are arranged between the front clamping blocks and the front clamping heads, and three rear clamping grooves are arranged on the moving frame for butt joint with the front clamping heads.

[0010] Further, six pin gear wheels, four pressing plate gear wheels and four butt joint gear wheels are rotatably installed in the moving frame, a stepping motor is arranged on the moving frame, the stepping motor drives the pin gear wheels, the pressing plate gear wheels and the butt joint gear wheels to rotate through belt transmission, a plurality of grooves are arranged below the pressing plate gear wheels, and grooves are arranged below the pin gear wheels.

[0011] Further, a plurality of clamping pin butt joint grooves are arranged on the moving frame, the clamping pin butt joint grooves are below the pin gear wheels, a plurality of clamping plate butt joint grooves are arranged on the moving frame, and the clamping plate butt joint grooves are below the pressing plate gear wheels.

[0012] Further, the assembling mechanism comprises a lifting plate slidingly installed in a connecting frame, an electric cylinder fixedly installed on the connecting frame, an inner rotating rod rotatably installed on an output end of the electric cylinder, an outer rotating rod rotatably installed on the inner rotating rod, and the outer rotating rod being in rotational connection with the connecting frame.

[0013] Further, a plurality of sleeves are fixedly installed on the lifting plate, and an exhaust module is placed in each sleeve. The exhaust module comprises an internally threaded cylinder, a bidirectional internal thread arranged in the internally threaded cylinder, a thimble arranged in the internally threaded cylinder, an internal convex ball arranged on the thimble, the internal convex ball sliding in the bidirectional internal thread of the internally threaded cylinder, four pin clamping blocks slidingly installed on the internally threaded cylinder, pin clamping springs arranged between the pin clamping blocks and the internally threaded cylinder, a slope surface arranged on the pin clamping block, an upper butt joint block rotatably installed on the internally threaded cylinder, an inner rotating column fixedly installed below the upper butt joint block, and the inner rotating column being in sliding connection with the thimble.

[0014] Further, a plurality of flattening modules are placed on the lifting plate. The flattening module comprises an upper fixed plate, a pressing plate column fixedly installed below the upper fixed plate, two plate clamping blocks slidingly installed in the upper fixed plate, plate clamping springs arranged between the plate clamping blocks and the upper fixed plate, a rotating block rotatably installed in the upper fixed plate, a plurality of upper clamping blocks arranged on the rotating block, an inner sliding column fixedly installed below the rotating block, an outer threaded cylinder slidingly installed outside the inner sliding column, a bidirectional external thread arranged on the outer threaded cylinder, an internal wall convex ball arranged in the pressing plate column, the internal wall convex ball sliding in the bidirectional external thread of the outer threaded cylinder, and a pressing plate rotatably installed on the outer threaded cylinder.

[0015] A construction method of a concrete automatic leveling device in a narrow space in a pipe culvert, comprising the following steps:

[0016] Install a connecting ring at the end of the pipe and install an inner rail on the connecting ring;

[0017] Select a rotating lead screw of appropriate length according to the depth of the pipe, and determine the number of sliding racks and rotating lead screws; install the leveling mechanism on the rotating lead screw, and assemble the sliding racks and rotating lead screws;

[0018] Install the exhaust module and the flattening module below the leveling mechanism through the assembly mechanism;

[0019] Drive the exhaust module and the flattening module by the leveling mechanism to exhaust and level the un-solidified concrete located in the lower half of the pipe.

[0020] The beneficial effects of the present application compared with the prior art are:

[0021] (1) The present application drives the rotating lead screw and the leveling mechanism by the motor to realize automatic exhaust and flattening of the concrete, significantly reduces manual intervention, improves construction efficiency, and is especially suitable for continuous operation of long-distance or large-diameter pipe culverts;

[0022] (2) The present application adopts a combined sliding rack, rotating lead screw and leveling mechanism, which can flexibly adjust the length of the device according to the depth of the pipe culvert, and supports multiple leveling mechanisms to work synchronously, adapting to different specifications of pipe culvert construction requirements;

[0023] (3) The flattening module in the present application drives the pressing plate to rise and fall through the bidirectional external thread, ensures the flatness of the concrete surface, avoids manual error, the exhaust module adopts differential thread design, i.e. dense thread down, sparse thread up, so that the ejector pin is quickly inserted into the concrete and slowly pulled out, effectively exhausting the bubbles, reducing the cavity and honeycomb surface;

[0024] (4) The assembly mechanism in the present application realizes the quick installation of the exhaust module and the flattening module through the electric cylinder, the lifting plate and the clamping structure, reduces the difficulty of manual operation, each module adopts standardized interface, is convenient for disassembly, replacement or maintenance, and prolongs the service life of the device. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the whole of the present application;

[0026] Figure 2 It is a structural schematic diagram of the base mechanism in the present application Figure 1 ;

[0027] Figure 3 It is a structural schematic diagram of the base mechanism in the present application Figure 2 ;

[0028] Figure 4 Structure diagram of the leveling mechanism in the application Figure 1

[0029] Figure 5 Structure diagram of the leveling mechanism in the application Figure 2

[0030] Figure 6 Structure diagram of the leveling mechanism in the application Figure 5 Partial structure diagram of A in the application

[0031] Figure 7 Structure diagram of the leveling mechanism in the application Figure 3

[0032] Figure 8 Structure diagram of the exhaust module and the leveling mechanism in the application

[0033] Figure 9 Structure diagram of the leveling mechanism and the leveling mechanism in the application

[0034] Figure 10 Structure diagram of the assembly mechanism in the application Figure 1

[0035] Figure 11 Structure diagram of the assembly mechanism in the application Figure 2

[0036] Figure 12 Structure diagram of the assembly mechanism in the application Figure 3

[0037] Figure 13 Structure diagram of the exhaust module and the leveling mechanism in the application Figure 1

[0038] Figure 14 Structure diagram of the exhaust module and the leveling mechanism in the application Figure 2

[0039] Figure 15 Structure diagram of the internal thread cylinder in the application

[0040] ​​​​​​​​Connecting frame 101, inner rail 102, side moving frame 103, connecting ring 104, sliding frame 105, rotating lead screw 106, swivel ring 107, connecting head 108, side wheel 109, lower wheel 110, inner threaded frame 201, moving frame 202, side butt joint block 203, sliding seat 204, clamping block 205, clamping spring 206, rear clamping groove 207, front clamping head 208, front clamping block 209, clamping block spring 210, pin gear 211, pressing plate gear 212, butt joint gear 213, clamping plate butt joint groove 214, clamping pin butt joint groove 215, butt joint groove 216, lifting plate 301, electric cylinder 302, inner rotating rod 303, outer rotating rod 304, sleeve 305, pressing plate 306, pressing plate column 307, inner threaded cylinder 308, thimble 309, inner convex ball 310, needle clamping block 311, needle clamping spring 312, upper butt joint block 313, inner rotating column 314, outer threaded cylinder 315, inner wall convex ball 316, rotating block 317, upper clamping block 318, plate clamping block 319, plate clamping spring 320, inner sliding column 321, upper fixed plate 322, pipe 4. DETAILED DESCRIPTION

[0041] The technical solutions of the present application will be further described below in combination with the drawings and through specific embodiments.

[0042] Among them, the drawings are only used for example explanation, and the representation is only a schematic diagram, not a real object diagram, and cannot be understood as a limitation on the present application; in order to better illustrate the embodiments of the present application, some components of the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some known structures and their descriptions in the drawings can be omitted.

[0043] As shown in Figures 1-15 A concrete automatic leveling device for narrow space in pipe culvert, comprising a base mechanism fixed on the pipe 4, the base mechanism comprising a connecting frame 101, the base mechanism is provided with a leveling mechanism for leveling the concrete in the pipe 4 and an assembly mechanism for assembling the leveling mechanism;

[0044] As shown in Figure 2 , Figure 3As shown, the base mechanism further comprises a plurality of sliding frames 105, rotating lead screws 106 and a connecting ring 104 fixedly installed on the connecting frame 101, the connecting ring 104 is fixedly installed on the end of the pipeline 4, the rotating lead screws 106 are driven by external motors, the connecting heads 108 are fixedly installed on both ends of the rotating lead screws 106, the rotating rings 107 are rotatably installed in the sliding frames 105, the rotating rings 107 are detachably installed with the connecting heads 108, the inner rails 102 are slidably installed on the connecting ring 104, a plurality of side moving frames 103 are fixedly installed on the inner rails 102, the side wheels 109 and the lower wheels 110 are rotatably installed on the side moving frames 103, the side wheels 109 and the lower wheels 110 roll on the inner wall of the pipeline 4, and the sliding frames 105 slide in the inner rails 102.

[0045] During construction, the connecting ring 104 is fixed on the end of the pipeline 4, the inner rails 102 are inserted from the connecting ring 104, supported and rolled on the inner wall of the pipeline 4 through the side wheels 109 and the lower wheels 110, a plurality of inner rails 102 are assembled according to pipelines 4 of different lengths, the sliding frames 105 and the rotating lead screws 106 are combined according to pipelines 4 of different depths, the length of the rotating lead screws 106 can also be adjusted, one or more leveling mechanisms are arranged on each group of rotating lead screws 106, the external motor drives the rotating lead screws 106 to rotate, drives all the rotating lead screws 106 to rotate together through the connecting heads 108 and the rotating rings 107, so as to drive the leveling mechanism to move.

[0046] As shown in the figure, Figures 4-9 The leveling mechanism comprises an inner threaded frame 201, a moving frame 202 fixedly installed on the inner threaded frame 201, the inner threaded frame 201 is in threaded transmission with the rotating lead screw 106, a side butt block 203 is fixedly installed on the moving frame 202, a sliding seat 204 is slidably installed on the moving frame 202, a clamping block 205 is fixedly installed on the sliding seat 204, a clamping spring 206 is arranged between the sliding seat 204 and the moving frame 202, and a butt groove 216 for butt joint with the side butt block 203 is arranged on the moving frame 202.

[0047] As shown in the figure, Figures 4-9 Three front clamping heads 208 are fixedly installed on the moving frame 202, a plurality of front clamping blocks 209 are slidably installed on the front clamping heads 208, clamping block springs 210 are arranged between the front clamping blocks 209 and the front clamping heads 208, and three rear clamping grooves 207 for butt joint with the front clamping heads 208 are arranged on the moving frame 202.

[0048] As shown in the figure, Figures 4-9 Six plug pin gears 211, four pressing plate gears 212 and four butt gears 213 are rotatably installed in the moving frame 202, a stepping motor is arranged on the moving frame 202, the stepping motor drives the plug pin gears 211, the pressing plate gears 212 and the butt gears 213 to rotate through belt transmission, a plurality of grooves are arranged below the pressing plate gears 212, and grooves are arranged below the plug pin gears 211.

[0049] As shown in Figures 4-9 The mobile frame 202 is provided with a plurality of card pin butt joints 215 below the pin gear 211, and a plurality of card plate butt joints 214 below the pressing plate gear 212.

[0050] The exhaust module and the flattening module are respectively installed below the mobile frame 202 by the assembling mechanism, the sliding frame 105 is pushed to slide along the inner track 102, the leveling mechanism is sent into the pipeline 4, and the outer motor drives the rotating lead screw 106 to rotate, which can drive the inner threaded frame 201 and the mobile frame 202 to translate along the rotating lead screw 106. When assembling the leveling mechanisms on the same group of rotating lead screws 106, the side butt joint block 203 of the left leveling mechanism is inserted into the butt joint groove 216 of the right leveling mechanism, the clamping block 205 and the sliding seat 204 are pushed, the clamping spring 206 is compressed, the side butt joint block 203 is limited by the clamping block 205 and the butt joint groove 216, and the left and right mobile frames 202 move synchronously.

[0051] When a group of rotating lead screws 106 is provided with two or more leveling mechanisms, the front clamping head 208 of the rear leveling mechanism is inserted into the rear clamping groove 207 of the front leveling mechanism, the front clamping block 209 is first slid inward under the action of the rear clamping groove 207, the clamping block spring 210 is compressed, and after the front clamping block 209 enters the rear clamping groove 207, the clamping block spring 210 rebounds, so that the front clamping block 209 is clamped into the rear clamping groove 207, the butt joint of the front and rear leveling mechanisms is completed, and after the butt joint of the front and rear leveling mechanisms, the butt joint gear 213 in front of the rear leveling mechanism is engaged with the butt joint gear 213 behind the front leveling mechanism. At this time, only one step motor of the leveling mechanism needs to be started, so that the pin gears 211, the pressing plate gears 212 and the butt joint gears 213 of the multiple leveling mechanisms in the front and rear directions can rotate synchronously.

[0052] When one leveling mechanism is not in contact with the next leveling mechanism, a transmission belt can be wound around the butt joint gear 213 in front of the rear leveling mechanism and the butt joint gear 213 behind the front leveling mechanism to realize the synchronous rotation of the pin gears 211, the pressing plate gears 212 and the butt joint gears 213 of the multiple leveling mechanisms in the front and rear directions.

[0053] As shown in Figures 8-15 The assembling mechanism includes a lifting plate 301 slidably installed in the connecting frame 101, an electric cylinder 302 fixedly installed on the connecting frame 101, an inner rotating rod 303 rotatably installed on the output end of the electric cylinder 302, an outer rotating rod 304 rotatably installed on the inner rotating rod 303, and the outer rotating rod 304 is rotatably connected with the connecting frame 101.

[0054] As shown in Figures 8-15As shown, the lifting plate 301 is fixedly installed with a plurality of sleeves 305, and the exhaust module is placed in the sleeve 305. The exhaust module comprises an internally threaded cylinder 308, a bidirectional internal thread is arranged in the internally threaded cylinder 308, a thimble 309 is arranged in the internally threaded cylinder 308, an internal convex ball 310 is arranged on the thimble 309, the internal convex ball 310 slides in the bidirectional internal thread of the internally threaded cylinder 308, four needle clamping blocks 311 are slidingly installed on the internally threaded cylinder 308, a needle clamping spring 312 is arranged between the needle clamping block 311 and the internally threaded cylinder 308, a slope is arranged on the needle clamping block 311, and an upper butt joint block 313 is rotatably installed on the internally threaded cylinder 308. The inner rotating column 314 is fixedly installed below the upper butt joint block 313, and the inner rotating column 314 is slidingly connected with the thimble 309.

[0055] As shown in the figure, Figures 8-15 A plurality of flattening modules are placed on the lifting plate 301, and the flattening module comprises an upper fixed plate 322. The upper fixed plate 322 is fixedly installed with a pressing plate column 307 below. Two plate clamping blocks 319 are slidingly installed in the upper fixed plate 322. A plate clamping spring 320 is arranged between the plate clamping block 319 and the upper fixed plate 322. A rotating block 317 is rotatably installed in the upper fixed plate 322. A plurality of upper clamping blocks 318 are arranged on the rotating block 317. An inner sliding column 321 is fixedly installed below the rotating block 317. An externally threaded cylinder 315 is slidingly installed outside the inner sliding column 321. A bidirectional external thread is arranged on the externally threaded cylinder 315. An inner wall convex ball 316 is arranged in the pressing plate column 307. The inner wall convex ball 316 slides in the bidirectional external thread of the externally threaded cylinder 315. A pressing plate 306 is rotatably installed on the externally threaded cylinder 315.

[0056] Before use, the leveling mechanism is moved above the lifting plate 301, the electric cylinder 302 is elongated, the inner rotating rod 303 is rotated, the outer rotating rod 304 is rotated, the lifting plate 301 is lifted by the inner rotating rod 303 and the outer rotating rod 304, the upper butt joint block 313 is inserted into the slot of the pin gear 211, the needle clamping block 311 is inserted into the clamping pin butt joint slot 215, the upper clamping block 318 is inserted into the slot of the pressing plate gear 212, the plate clamping block 319 is inserted into the clamping plate butt joint slot 214, the exhaust module and the flattening module are installed below the moving frame 202, and the assembly work of all leveling mechanisms, exhaust modules and flattening modules is completed in this way.

[0057] The stepping motor on the moving frame 202 drives the pin gear 211, the pressing plate gear 212 and the docking gear 213 to rotate through belt drive, the pin gear 211 drives the upper docking block 313 to rotate, thereby driving the inner rotating column 314 to rotate, the inner rotating column 314 drives the ejector pin 309 to rotate, under the action of the inner convex ball 310, the inner convex ball 310 slides along the bidirectional internal thread of the inner threaded cylinder 308, the ejector pin 309 is rotated downward spirally, the ejector pin 309 slides relative to the inner rotating column 314, the ejector pin 309 is drilled into the not yet solidified concrete located in the lower half layer of the pipeline 4, then the ejector pin 309 is pulled out, the not yet solidified concrete is exhausted, the internal thread of the inner threaded cylinder 308 used for driving the inner convex ball 310 and the ejector pin 309 to move downward is relatively dense, and the internal thread of the inner threaded cylinder 308 used for driving the inner convex ball 310 and the ejector pin 309 to move upward is relatively sparse, the fast downward movement and the slow upward movement of the ejector pin 309 are realized, the fast downward movement of the ejector pin 309 facilitates insertion into the concrete, and the slow upward movement facilitates exhaust, so that air bubbles are prevented from being generated in the cavity.

[0058] The rotation of the pressing plate gear 212 drives the upper clamping block 318, the rotating block 317 and the inner sliding column 321 to rotate, drives the outer threaded cylinder 315 to rotate, under the cooperation of the inner wall convex ball 316 and the bidirectional external thread of the outer threaded cylinder 315, drives the outer threaded cylinder 315 to rotate spirally, thereby driving the pressing plate 306 to ascend and descend, since the pressing plates 306 of the two pressing plate modules below the moving frame 202 are in contact with each other and ascend and descend synchronously, the pressing plate 306 cannot rotate, and the not yet solidified concrete in the lower half layer of the pipeline 4 is flattened by the ascending and descending of the pressing plate 306.

[0059] As shown in Figures 1-15 A construction method of the automatic concrete leveling device in a narrow space in a pipe culvert, steps are as follows: the inner rail 102 is installed at the end of the pipeline 4, the sliding frame 105 is installed on the connecting ring 104; the rotating lead screw 106 with appropriate length is selected according to the depth of the pipeline 4, and the number of the sliding frame 105 and the rotating lead screw 106 is determined; the leveling mechanism is installed on the rotating lead screw 106, and the sliding frame 105 and the rotating lead screw 106 are assembled; the exhaust module and the flattening module are installed below the leveling mechanism through the assembling mechanism; the exhaust module and the flattening module are driven by the leveling mechanism to exhaust and flatten the not yet solidified concrete located in the lower half of the pipeline 4.

[0060] Working principle of the present application:

[0061] During construction, firstly, the connecting ring 104 is fixed at the end of the pipeline 4, the inner rail 102 is inserted from the connecting ring 104, supported and rolled along the inner wall of the pipeline 4 by the side wheel 109 and the lower wheel 110, a plurality of inner rails 102 are assembled according to pipelines 4 of different lengths, the sliding frame 105 and the rotating lead screw 106 are combined according to pipelines 4 of different depths, the length of the rotating lead screw 106 can also be adjusted, and one or more leveling mechanisms are arranged on each group of rotating lead screws 106; before the device is used, the leveling mechanism is moved above the lifting plate 301, the electric cylinder 302 is elongated to drive the inner rotating rod 303 to rotate, thereby driving the outer rotating rod 304 to rotate, the lifting plate 301 is lifted by the inner rotating rod 303 and the outer rotating rod 304, the upper butt joint block 313 is inserted into the slot of the pin gear 211, the pin clamp block 311 is inserted into the pin clamp slot 215, the upper clamp block 318 is inserted into the slot of the pressing plate gear 212, and the plate clamp block 319 is inserted into the plate clamp slot 214, so that the exhaust module and the flattening module are installed below the moving frame 202, and the assembly work of all leveling mechanisms, the exhaust module and the flattening module is completed in this way; when two or more leveling mechanisms are arranged on a group of rotating lead screws 106, the front clamp head 208 of the rear leveling mechanism is inserted into the rear clamp slot 207 of the front leveling mechanism, the front clamp block 209 is first slid inward under the action of the rear clamp slot 207, the clamp spring 210 is compressed, after the front clamp block 209 enters the rear clamp slot 207, the clamp spring 210 rebounds to make the front clamp block 209 clamped into the rear clamp slot 207, the butt joint of the front and rear leveling mechanisms is completed, after the butt joint of the front and rear leveling mechanisms, the butt joint gear 213 in front of the rear leveling mechanism is engaged with the butt joint gear 213 behind the front leveling mechanism, at this time, the stepping motor of one leveling mechanism is started, and the pin gear 211, the pressing plate gear 212 and the butt joint gear 213 of the multiple leveling mechanisms in the front and rear directions can be synchronously rotated; when the front and rear leveling mechanisms are not in contact, a transmission belt can be wound outside the butt joint gear 213 in front of the rear leveling mechanism and the butt joint gear 213 behind the front leveling mechanism, so that the pin gear 211, the pressing plate gear 212 and the butt joint gear 213 of the multiple leveling mechanisms in the front and rear directions can be synchronously rotated; the external motor drives the rotating lead screw 106 to rotate, drives all rotating lead screws 106 to rotate together through the connecting head 108 and the rotating ring 107, and drives the leveling mechanism to move.The stepping motor on the moving frame 202 drives the pin gear 211, the pressing plate gear 212 and the docking gear 213 to rotate through belt drive, the pin gear 211 drives the upper docking block 313 to rotate, thereby driving the inner rotating column 314 to rotate, the inner rotating column 314 drives the ejector pin 309 to rotate, under the action of the inner convex ball 310, the inner convex ball 310 slides along the bidirectional internal thread of the inner threaded cylinder 308, the ejector pin 309 is realized to rotate downward spirally, the ejector pin 309 slides relative to the inner rotating column 314, the ejector pin 309 is drilled into the not yet solidified concrete located in the lower half layer of the pipeline 4, then the ejector pin 309 is pulled out, the not yet solidified concrete is exhausted, the internal thread of the inner threaded cylinder 308 used for driving the inner convex ball 310 and the ejector pin 309 to move downward is relatively dense, while the internal thread of the inner threaded cylinder 308 used for driving the inner convex ball 310 and the ejector pin 309 to move upward is relatively sparse, the ejector pin 309 is realized to move downward quickly and move upward slowly, the ejector pin 309 is inserted into the concrete conveniently by moving downward quickly, and the ejector pin 309 is exhausted and air bubbles are prevented from being generated in the cavity by moving upward slowly; the pressing plate gear 212 drives the upper clamping block 318, the rotating block 317 and the inner sliding column 321 to rotate, thereby driving the outer threaded cylinder 315 to rotate, under the cooperation of the inner wall convex ball 316 and the bidirectional external thread of the outer threaded cylinder 315, the outer threaded cylinder 315 is driven to rotate spirally, thereby driving the pressing plate 306 to ascend and descend, since the pressing plates 306 of the two pressing plate modules below the moving frame 202 are in contact with each other and ascend and descend synchronously, the pressing plate 306 will not rotate, the not yet solidified concrete in the lower half layer of the pipeline 4 is flattened and leveled by the ascending and descending of the pressing plate 306.

[0062] The present application is not limited to the above specific embodiments, and various modifications made by those skilled in the art without creative labor, based on the above concept, all fall within the protection scope of the present application.

Claims

1. A kind of automatic concrete leveling device in narrow space in pipe culvert, including base mechanism fixed on pipeline (4), it is characterized in that: The base mechanism comprises a connecting frame (101), and a leveling mechanism for leveling concrete in a pipe (4) and an assembling mechanism for assembling the leveling mechanism are arranged on the base mechanism; The base mechanism further comprises a plurality of sliding frames (105), a rotating lead screw (106) and a connecting ring (104) fixedly installed on the connecting frame (101), the connecting ring (104) is fixedly installed on an end of the pipe (4), the rotating lead screw (106) is driven by an external motor, connecting heads (108) are fixedly installed at two ends of the rotating lead screw (106), a rotating ring (107) is rotatably installed in the sliding frame (105), the rotating ring (107) is detachably installed with the connecting head (108), an inner track (102) is slidably installed on the connecting ring (104), a plurality of side moving frames (103) are fixedly installed on the inner track (102), side wheels (109) and lower wheels (110) are rotatably installed on the side moving frames (103), the side wheels (109) and the lower wheels (110) roll on the inner wall of the pipe (4), and the sliding frame (105) slides in the inner track (102); The leveling mechanism comprises an inner threaded frame (201), a moving frame (202) is fixedly installed on the inner threaded frame (201), the inner threaded frame (201) is in threaded transmission with the rotating lead screw (106), a side butt joint block (203) is fixedly installed on the moving frame (202), a sliding seat (204) is slidably installed on the moving frame (202), a clamping block (205) is fixedly installed on the sliding seat (204), a clamping spring (206) is arranged between the sliding seat (204) and the moving frame (202), and a butt joint groove (216) for butt joint with the side butt joint block (203) is arranged on the moving frame (202); Six pin gears (211), four pressing plate gears (212) and four butt joint gears (213) are rotatably installed in the moving frame (202), a stepping motor is arranged on the moving frame (202), the stepping motor drives the pin gears (211), the pressing plate gears (212) and the butt joint gears (213) to rotate through belt transmission, a plurality of grooves are arranged below the pressing plate gears (212), and grooves are arranged below the pin gears (211); A plurality of clamping pin butt joint grooves (215) are arranged on the moving frame (202), the clamping pin butt joint grooves (215) are below the pin gears (211), a plurality of clamping plate butt joint grooves (214) are arranged on the moving frame (202), and the clamping plate butt joint grooves (214) are below the pressing plate gears (212); The assembling mechanism comprises a lifting plate (301) slidably installed in the connecting frame (101), an electric cylinder (302) is fixedly installed on the connecting frame (101), an inner rotating rod (303) is rotatably installed on an output end of the electric cylinder (302), an outer rotating rod (304) is rotatably installed on the inner rotating rod (303), and the outer rotating rod (304) is rotatably connected with the connecting frame (101). The lifting plate (301) is fixedly provided with a plurality of sleeves (305), the sleeve (305) is placed with an exhaust module, the exhaust module comprises an internal thread cylinder (308), the internal thread cylinder (308) is provided with a two-way internal thread, the internal thread cylinder (308) is provided with a thimble (309), the thimble (309) is provided with an internal convex ball (310), the internal convex ball (310) slides in the two-way internal thread of the internal thread cylinder (308), the internal thread cylinder (308) is slidably provided with four needle clamping blocks (311), the needle clamping block (311) and the internal thread cylinder (308) are provided with a needle clamping spring (312), the needle clamping block (311) is provided with a slope, the internal thread cylinder (308) is rotatably provided with an upper butt joint block (313), the upper butt joint block (313) is fixedly provided with an internal rotating column (314) below, the internal rotating column (314) is slidably connected with the thimble (309); The lifting plate (301) is placed with a plurality of flattening modules, the flattening module comprises an upper fixed plate (322), the upper fixed plate (322) is fixedly provided with a pressing plate column (307) below, the upper fixed plate (322) is slidably provided with two plate clamping blocks (319), the plate clamping block (319) and the upper fixed plate (322) are provided with a plate clamping spring (320), the upper fixed plate (322) is rotatably provided with a rotating block (317), the rotating block (317) is provided with a plurality of upper clamping blocks (318), the rotating block (317) is fixedly provided with an internal sliding column (321) below, the internal sliding column (321) is slidably provided with an external thread cylinder (315) outside, the external thread cylinder (315) is provided with a two-way external thread, the pressing plate column (307) is provided with an internal wall convex ball (316), the internal wall convex ball (316) slides in the two-way external thread of the external thread cylinder (315), the external thread cylinder (315) is rotatably provided with a pressing plate (306).

2. The automatic concrete leveling device for narrow space in pipe culvert according to claim 1, characterized in that: The moving frame (202) is fixedly provided with three front clamping heads (208), the front clamping head (208) is slidably provided with a plurality of front clamping blocks (209), the front clamping block (209) and the front clamping head (208) are provided with a clamping block spring (210), the moving frame (202) is provided with three rear clamping grooves (207) for butt joint with the front clamping head (208).

3. The construction method of the automatic concrete leveling device for narrow space in a pipe culvert according to claim 1, characterized in that, The following steps are included: Install the connecting ring (104) at the end of the pipeline (4), and install the inner track (102) on the connecting ring (104); According to the depth of the pipeline (4), select a rotating lead screw (106) with appropriate length, and determine the number of the sliding frame (105) and the rotating lead screw (106); Install the leveling mechanism to the rotating lead screw (106), and assemble the sliding frame (105) and the rotating lead screw (106); Install the exhaust module and the flattening module below the leveling mechanism through the assembling mechanism; Drive the exhaust module and the flattening module by the leveling mechanism to exhaust and level the un-solidified concrete located in the lower half of the pipeline (4).

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