Ultra-high performance concrete pushing and leveling device

Abstract

The invention relates to the technical field of ultra-high performance concrete, and discloses an ultra-high performance concrete pushing and leveling device which comprises a guide rail and a moving frame, and a material distribution layer is formed on a roadbed; a pushing plate and a leveling plate are arranged at the bottom of the moving frame; the material pushing plate is provided with a material pushing surface and a guide pushing surface; the guide pushing surface and the material pushing surface form a material distributing edge, and a sawtooth part is formed between the notch grooves; in the pushing process of the material pushing plate, the material distributing edge is inserted, the ultra-high-performance concrete is cut by the sawtooth part, and the guiding and pushing surface is arranged in a suspended manner; the leveling plate has a leveling surface, and the circular groove forms a bottom opening; protruding blocks are arranged at the bottoms of the movable shafts in the circular grooves, and the arc-shaped intervals are filled with elastic layers. In the leveling process, the protruding block vibrates longitudinally, the leveling block vibrates synchronously and longitudinally, the elastic layer deforms elastically, and the leveling surface abuts against the top of the cloth layer intermittently; through the synergistic effect of the material pushing plate and the leveling plate, the material pushing and leveling process of the ultra-high performance concrete is optimized, the material pushing effect and the leveling effect are both considered, and therefore the construction quality is improved.

Description

Technical Field

[0001] The patent of this invention relates to the technical field of ultra-high performance concrete, specifically, to an ultra-high performance concrete pushing and leveling device. Background Art

[0002] Ultra-high performance concrete, with its extraordinary mechanical properties, durability, and compressive and flexural strength, is widely used in many engineering projects with extremely stringent requirements on structural performance, such as large-scale infrastructure construction, bridge projects, and special industrial buildings.

[0003] However, although ultra-high performance concrete has made significant breakthroughs in material performance, in actual construction applications, especially when it comes to the key process of pushing and leveling, its pushing and leveling effect is still a problem that needs to be solved urgently.

[0004] In the existing technology, during the pushing process, due to the significant differences in the cohesiveness and fluidity characteristics of ultra-high performance concrete and ordinary concrete, traditional pushing devices find it difficult to accurately control the flow direction and distribution range of concrete, resulting in frequent accumulation or uneven distribution of concrete, which makes subsequent leveling operations face great difficulties and cannot achieve the expected flatness requirements.

[0005] Secondly, the existing pusher plate and screed plate structure is relatively simple. When they come into contact with concrete and apply force, local stress concentration is prone to occur. This may not only damage the concrete surface and affect its ultimate structural performance, but also accelerate the wear of the device itself and reduce its service life.

[0006] In addition, the overall vibration mode of some devices is relatively simple, which is difficult to match with the complex rheological properties of ultra-high performance concrete. It is easy to cause excessive liquefaction problems inside the concrete, resulting in instability of the internal structure of the concrete, increasing the internal porosity, and thus reducing the overall quality of the ultra-high performance concrete. Summary of the Invention

[0007] The object of the present invention is to provide an ultra-high performance concrete pushing and leveling device, aiming to solve the problem of poor pushing and leveling effect of ultra-high performance concrete in the prior art.

[0008] The present invention is implemented as follows: an ultra-high performance concrete pushing and leveling device includes guide rails arranged on both sides of a material distribution layer and a movable frame moving along the guide rails. The material distribution layer is formed on a roadbed and is formed of ultra-high performance concrete. The movable frame is movably connected to the two guide rails and spans the material distribution layer.

[0009] The bottom of the movable frame is provided with a push plate that reciprocates laterally and a screed plate that reciprocates longitudinally. The push plate and the screed plate are arranged in sequence from the front to the back of the movable frame. The front end of the push plate has a downwardly arranged push surface, which is concave and curved toward the back, and the push surface encloses an open groove with an open front end.

[0010] The bottom of the push plate has a guide surface, which is arranged upwardly and tilted along the direction from the front to the back of the push plate; the front end of the guide surface intersects with the bottom of the push surface to form a strip-shaped material dividing edge, and a plurality of notches are provided on the material dividing edge, and a serration portion is formed between adjacent notches;

[0011] When the pusher plate pushes the ultra-high performance concrete on the distribution layer, the dividing edge is inserted into the ultra-high performance concrete, the serrated portion cuts the ultra-high performance concrete transversely, and the pushed ultra-high performance concrete enters the open groove along the pushing surface, and the guide surface is arranged in a suspended manner;

[0012] The bottom of the screed plate has a horizontal screed surface, a circular groove is provided in the screed plate, the circular groove passes through the screed surface to form a bottom opening; a movable shaft is provided in the circular groove, a protruding block extends downward from the bottom of the movable shaft, the protruding block passes through the bottom opening and extends to the bottom of the screed surface; an arc-shaped gap is provided between the movable shaft and the circular groove, and the arc-shaped gap is filled with an elastic layer;

[0013] When the screed plate is leveling the fabric layer, the protruding block presses against the top of the fabric layer. As the screed plate vibrates back and forth longitudinally, the leveling block vibrates synchronously with the reciprocating longitudinal vibration, the elastic layer elastically deforms, and the screed surface intermittently presses against the top of the fabric layer. When the protruding block sinks into the circular groove, the protruding block is arranged flush with the screed surface, and the screed surface abuts against the top of the fabric layer.

[0014] Furthermore, the top of the push plate is provided with a top bar, the top bar is movably connected to the movable frame, the side of the push plate is connected to a transverse vibration motor, and the transverse vibration motor drives the push plate to vibrate reciprocatingly.

[0015] Furthermore, the top bar is extended along the length direction of the push plate and is arranged with the same length as the push plate. The movable frame is provided with a transverse rail groove, and the top bar is movably embedded in the transverse rail groove.

[0016] Furthermore, the push plate is provided with a plurality of through holes, the through holes penetrate the push plate front and back, the front end of the through hole penetrates the push surface and is connected to the opening groove, and the rear end of the through hole penetrates the rear end of the push plate.

[0017] Furthermore, along the direction from front to back of the through holes, the through holes are arranged tilted upward.

[0018] Furthermore, the diameter of the through hole gradually increases along the direction from front to back of the through hole; the front end of the through hole passes through the pushing surface to form a front port, and the front port is arranged in a strip shape and extends along the height direction of the pushing surface.

[0019] Furthermore, the top of the movable shaft is provided with a downwardly recessed position, the elastic layer has a top section covering the top of the movable shaft, the top section is embedded in the recessed position, and there is a top gap between the top section and the top of the circular groove.

[0020] Furthermore, a longitudinal axis is convexly provided in the recessed portion, and the longitudinal axis is wrapped in the top section.

[0021] Furthermore, side bars are respectively provided on both sides of the screed plate, and the side bars are extended along the height direction of the screed plate. The side bars are movably connected to the movable frame. A longitudinal vibration motor is provided on the screed plate, and the longitudinal vibration motor drives the screed plate to vibrate reciprocatingly longitudinally.

[0022] Furthermore, the side bars are arranged with the same length as the height of the screed plate, and a longitudinal rail groove is provided in the movable frame, in which the side bars are movably embedded; a top head is provided at the top of the side bar, and a spring is provided between the top head and the movable frame, and during the reciprocating longitudinal vibration of the screed plate, the spring deforms reciprocatingly.

[0023] Compared with the prior art, the ultra-high performance concrete pushing and leveling device provided by the present invention has a downwardly facing arc-shaped pushing surface at the front end of the pushing plate during the pushing process. The pushing surface encloses an open groove with an open front end. This allows the ultra-high performance concrete to smoothly enter the open groove along the pushing surface when the pushing plate pushes the ultra-high performance concrete, thereby achieving an efficient pushing effect.

[0024] At the same time, the guide surface at the bottom of the pusher plate is arranged upward and intersects with the bottom of the pusher surface to form a strip-shaped dividing edge. The dividing edge is provided with multiple notches, and serrations are formed between adjacent notches. When the pusher plate pushes concrete, the dividing edge is inserted into the concrete, and the serrations can cut the concrete horizontally, making the concrete more evenly distributed, thus avoiding the accumulation or uneven distribution of ultra-high performance concrete.

[0025] During the leveling process, a horizontal leveling surface is provided at the bottom of the leveling plate, in which a circular groove is provided. A movable shaft is installed in the circular groove. A protruding block extends from the bottom of the movable shaft. The protruding block passes through the opening at the bottom of the leveling surface and extends downward. There is an arc-shaped gap between the movable shaft and the circular groove, which is filled with an elastic layer.

[0026] When the screed plate is leveling the fabric layer, the protruding blocks press against the top of the fabric layer. As the screed plate vibrates back and forth longitudinally, the synergistic effect of the protruding blocks and the elastic layer enables the screed plate to intermittently and evenly press against the top of the fabric layer, thereby achieving an efficient leveling effect. In particular, when the protruding blocks sink into the circular grooves, they are arranged flush with the screed plate, and the screed plate can be evenly contacted with the top of the fabric layer, ensuring the flatness of the ultra-high performance concrete surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a simplified schematic diagram of the ultra-high performance concrete pushing and leveling device provided by the present invention;

[0028] Figure 2 It is a structural schematic diagram of the mobile rack provided by the present invention;

[0029] Figure 3 1 is a schematic cross-sectional view of the pusher plate provided by the present invention;

[0030] Figure 4 It is a schematic cross-sectional view of the material dividing edge provided by the present invention;

[0031] Figure 5 It is a cross-sectional schematic diagram of the movable shaft provided by the present invention;

[0032] Figure 6 It is a schematic cross-sectional view of the structure of the circular groove and the movable shaft provided by the present invention;

[0033] Figure 7 It is a schematic cross-sectional view of the structure of the top head provided by the present invention;

[0034] In the figure: fabric layer 100, guide rail 101, moving frame 102, top head 103, spring 104;

[0035] Pushing plate 200, pushing surface 201, opening groove 202, pushing guide surface 203, dividing edge 204, notched groove 205, serrated portion 206, top bar 207, through hole 208;

[0036] Screed plate 300 , screed plane 301 , movable shaft 302 , protruding block 303 , elastic layer 304 , recessed position 305 , top section 306 , top spacer 307 , longitudinal shaft 308 , side strip 309 , longitudinal vibration motor 310 . DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] The implementation of the present invention is described in detail below with reference to specific embodiments.

[0039] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0040] Reference Figure 1-7 The figure shows a preferred embodiment of the present invention.

[0041] The ultra-high performance concrete pushing and leveling device includes guide rails 101 arranged on both sides of a material distribution layer 100 and a movable frame 102 that moves along the guide rails 101. The material distribution layer 100 is formed on the roadbed and is made of ultra-high performance concrete. The movable frame 102 is movably connected to the two guide rails 101 and spans the material distribution layer 100.

[0042] The bottom of the movable frame 102 is provided with a pusher plate 200 that reciprocates laterally and a screed plate 300 that reciprocates longitudinally. The pusher plate 200 and the screed plate 300 are sequentially spaced apart along the movable frame 102 from front to back. The front end of the pusher plate 200 has a downwardly facing pusher surface 201 that is concave rearwardly and forms an open slot 202 with an open front end.

[0043] The bottom of the push plate 200 has a guide surface 203, which is arranged upward and tilted along the direction from the front to the back of the push plate 200. The front end of the guide surface 203 intersects with the bottom of the push surface 201 to form a strip-shaped material dividing edge 204. The material dividing edge 204 is provided with a plurality of notches 205, and serrations 206 are formed between adjacent notches 205.

[0044] When the push plate 200 pushes the ultra-high performance concrete on the distribution layer 100, the dividing edge 204 is inserted into the ultra-high performance concrete, and the serrated portion 206 cuts the ultra-high performance concrete transversely. The pushed ultra-high performance concrete enters the open groove 202 along the pushing surface 201, and the guide surface 203 is arranged in a suspended manner;

[0045] The bottom of the screed plate 300 has a horizontal screed surface 301. A circular groove is provided in the screed plate 300, which passes through the screed surface 301 to form a bottom opening. A movable shaft 302 is provided in the circular groove. A protrusion 303 extends downward from the bottom of the movable shaft 302. The protrusion 303 passes through the bottom opening and extends below the screed surface 301. An arc-shaped gap is formed between the movable shaft 302 and the circular groove, and the arc-shaped gap is filled with an elastic layer 304.

[0046] When the screed plate 300 is leveling the fabric layer 100, the protruding block 303 presses against the top of the fabric layer 100. As the screed plate 300 reciprocates longitudinally, the leveling block vibrates synchronously, the elastic layer 304 elastically deforms, and the leveling surface 301 intermittently presses against the top of the fabric layer 100. When the protruding block 303 sinks into the circular groove, the protruding block 303 is aligned with the leveling surface 301, and the leveling surface 301 abuts against the top of the fabric layer 100.

[0047] In the ultra-high performance concrete pushing and leveling device provided above, during the pushing process, the front end of the pushing plate 200 is provided with a downwardly facing and arc-shaped pushing surface 201, which encloses an open groove 202 with an open front end. This allows the pushing plate 200 to push the ultra-high performance concrete, and the concrete can smoothly enter the open groove 202 along the pushing surface 201, thereby achieving an efficient pushing effect.

[0048] At the same time, the guide surface 203 at the bottom of the pusher plate 200 is arranged upwardly and intersects with the bottom of the pusher surface 201 to form a strip-shaped dividing edge 204. The dividing edge 204 is provided with a plurality of notches 205, and a serration 206 is formed between adjacent notches 205. When the pusher plate 200 pushes concrete, the dividing edge 204 is inserted into the concrete, and the serration 206 can cut the concrete horizontally, making the concrete more evenly distributed, thereby avoiding the accumulation or uneven distribution of ultra-high performance concrete.

[0049] During the leveling process, a horizontal leveling surface 301 is provided at the bottom of the leveling plate 300, in which a circular groove is provided. A movable shaft 302 is installed in the circular groove. A protruding block 303 extends from the bottom of the movable shaft 302. The protruding block 303 passes through the opening at the bottom of the leveling surface 301 and extends downward. There is an arc-shaped gap between the movable shaft 302 and the circular groove, which is filled with an elastic layer 304.

[0050] When the screed plate 300 is leveling the fabric layer 100, the protruding blocks 303 press against the top of the fabric layer 100. As the screed plate 300 vibrates back and forth longitudinally, the synergistic effect of the protruding blocks 303 and the elastic layer 304 enables the leveling surface 301 to intermittently and evenly press against the top of the fabric layer 100, thereby achieving an efficient leveling effect. In particular, when the protruding blocks 303 are sunk into the circular groove, they are arranged flush with the leveling surface 301, and the leveling surface 301 can be evenly abutted against the top of the fabric layer 100, ensuring the flatness of the ultra-high performance concrete surface.

[0051] In this embodiment, the top of the push plate 200 has a top bar 207, which is movably connected to the movable frame 102. The side of the push plate 200 is connected to a transverse vibration motor, which drives the push plate 200 to vibrate reciprocatingly.

[0052] In this way, the push plate 200 is ensured to have good stability and controllability during the lateral vibration process. Driven by the lateral vibration motor, the push plate 200 can effectively push the ultra-high performance concrete laterally, thereby improving the efficiency and uniformity of pushing, and helping to improve the pushing and leveling effect of the ultra-high performance concrete.

[0053] In this embodiment, the top bar 207 is arranged along the length direction of the push plate 200 and is arranged with the same length as the push plate 200. The movable frame 102 is provided with a transverse rail groove, and the top bar 207 is movably embedded in the transverse rail groove.

[0054] The lateral stability of the push plate 200 can be ensured. When the lateral vibration motor drives the push plate 200 to vibrate back and forth, longitudinal deviation can be avoided, thereby ensuring the consistency of the ultra-high performance concrete pushing.

[0055] In this embodiment, a plurality of through holes 208 are provided in the push plate 200, and the through holes 208 penetrate the push plate 200 front and back. The front end of the through hole 208 penetrates the push surface 201 and is connected with the opening groove 202, and the rear end of the through hole 208 penetrates the rear end of the push plate 200; this not only optimizes the flow path of the ultra-high performance concrete, allowing the concrete to pass through the push plate 200 more smoothly, but also reduces the risk of blockage and uneven distribution, thereby improving the efficiency and effect of the pushing process.

[0056] In this embodiment, the through holes 208 are arranged to be tilted upward along the direction from front to back of the through holes 208; in this way, the ultra-high performance concrete can be guided to rise naturally during the pushing process, which helps to distribute the concrete more evenly under the action of the pushing plate 200, thereby improving the pushing and leveling effect of the concrete.

[0057] In this embodiment, the diameter of the through hole 208 gradually increases from front to back; the front end of the through hole 208 passes through the pushing surface 201 to form a front port, which is arranged in a strip shape and extends along the height direction of the pushing surface 201.

[0058] The gradually expanding through hole 208 can adapt to the different flow requirements of ultra-high performance concrete during the pushing process, and the strip arrangement of the front port helps the concrete to form a uniform flow when entering the open groove 202, thereby improving the uniformity of the distribution of the concrete.

[0059] In this embodiment, the top of the movable shaft 302 is provided with a downwardly concave recessed position 305, and the elastic layer 304 has a top section 306 covering the top of the movable shaft 302. The top section 306 is embedded in the recessed position 305, and a top gap 307 is provided between the top section 306 and the top of the circular groove.

[0060] In this way, the connection stability between the movable shaft 302 and the elastic layer 304 can be enhanced, ensuring that the elastic layer 304 can effectively transmit force during compression and rebound, thereby improving the force transmission efficiency and leveling accuracy during the leveling process.

[0061] In this embodiment, a longitudinal axis 308 is protruded in the recessed position 305, and the longitudinal axis 308 is wrapped in the top section 306; this can guide the longitudinal vibration of the movable axis 302 and the longitudinal deformation of the top section 306, ensuring the linearity and stability during the vibration process, and helping to improve the uniformity and consistency of the leveling effect.

[0062] In this embodiment, side bars 309 are respectively provided on both sides of the screed plate 300. The side bars 309 are extended along the height direction of the screed plate 300. The side bars 309 are movably connected to the movable frame 102. A longitudinal vibration motor 310 is provided on the screed plate 300. The longitudinal vibration motor 310 drives the screed plate 300 to vibrate reciprocatingly longitudinally.

[0063] By setting the side bars 309, lateral support and guidance are provided for the screed plate 300, ensuring that the screed plate 300 remains stable during the longitudinal vibration process. The drive of the longitudinal vibration motor 310 enables the screed plate 300 to effectively level the concrete longitudinally, thereby improving the flatness of the concrete surface.

[0064] In this embodiment, the side bars 309 are arranged to have the same length as the height of the screed plate 300, and a longitudinal rail groove is provided in the movable frame 102, in which the side bars 309 are movably embedded; a top head 103 is provided at the top of the side bar 309, and a spring 104 is provided between the top head 103 and the movable frame 102. During the reciprocating longitudinal vibration of the screed plate 300, the spring 104 is deformed reciprocatingly.

[0065] The elastic action of the spring 104 provides a buffer and restoring force for the longitudinal vibration of the screed plate 300, making the screed process smoother and improving the flatness and density of the concrete surface.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Ultra-high performance concrete pushing and leveling device, characterized in that: The invention comprises guide rails arranged on both sides of a material distribution layer and a movable frame moving along the guide rails. The material distribution layer is formed on a roadbed and is formed of ultra-high performance concrete. The movable frame is movably connected to the two guide rails and spans over the material distribution layer. The bottom of the movable frame is provided with a push plate that reciprocates laterally and a screed plate that reciprocates longitudinally. The push plate and the screed plate are arranged in sequence from the front to the back of the movable frame. The front end of the push plate has a downwardly arranged push surface, which is concave and curved toward the back, and the push surface encloses an open groove with an open front end. The bottom of the push plate has a guide surface, which is arranged upwardly and tilted along the direction from the front to the back of the push plate; the front end of the guide surface intersects with the bottom of the push surface to form a strip-shaped material dividing edge, and a plurality of notches are provided on the material dividing edge, and a serration portion is formed between adjacent notches; When the pusher plate pushes the ultra-high performance concrete on the distribution layer, the dividing edge is inserted into the ultra-high performance concrete, the serrated portion cuts the ultra-high performance concrete transversely, and the pushed ultra-high performance concrete enters the open groove along the pushing surface, and the guide surface is arranged in a suspended manner; The bottom of the screed plate has a horizontal screed surface, a circular groove is provided in the screed plate, the circular groove passes through the screed surface to form a bottom opening; a movable shaft is provided in the circular groove, a protruding block extends downward from the bottom of the movable shaft, the protruding block passes through the bottom opening and extends to the bottom of the screed surface; an arc-shaped gap is provided between the movable shaft and the circular groove, and the arc-shaped gap is filled with an elastic layer; When the screed plate is leveling the fabric layer, the protruding block presses against the top of the fabric layer. As the screed plate vibrates back and forth longitudinally, the leveling block vibrates synchronously with the reciprocating longitudinal vibration, the elastic layer elastically deforms, and the screed surface intermittently presses against the top of the fabric layer. When the protruding block sinks into the circular groove, the protruding block is arranged flush with the screed surface, and the screed surface abuts against the top of the fabric layer.

2. The ultra-high performance concrete pushing and leveling device according to claim 1, characterized in that: The top of the push plate is provided with a top bar, and the top bar is movably connected to the movable frame. The side of the push plate is connected to a transverse vibration motor, and the transverse vibration motor drives the push plate to vibrate reciprocatingly.

3. The ultra-high performance concrete pushing and leveling device according to claim 2, characterized in that: The top bar is extended along the length direction of the push plate and is arranged with the same length as the push plate. The movable frame is provided with a transverse rail groove, and the top bar is movably embedded in the transverse rail groove.

4. The ultra-high performance concrete pushing and leveling device according to any one of claims 1 to 3, characterized in that: The push plate is provided with a plurality of through holes, the through holes penetrate the push plate front and back, the front end of the through hole penetrates the push surface and is connected with the opening groove, and the rear end of the through hole penetrates the rear end of the push plate.

5. The ultra-high performance concrete pushing and leveling device according to claim 4, characterized in that: Along the direction of the through holes from front to back, the through holes are arranged tilted upward.

6. The ultra-high performance concrete pushing and leveling device according to claim 4, characterized in that: The diameter of the through hole gradually increases along the direction from front to back; the front end of the through hole passes through the pushing surface to form a front port, which is arranged in a strip shape and extends along the height direction of the pushing surface.

7. The ultra-high performance concrete pushing and leveling device according to any one of claims 1 to 3, characterized in that: The top of the movable shaft is provided with a downwardly recessed position, and the elastic layer has a top section covering the top of the movable shaft. The top section is embedded in the recessed position, and a top gap is provided between the top section and the top of the circular groove.

8. The ultra-high performance concrete pushing and leveling device according to claim 7, characterized in that: A longitudinal axis is protruded from the recessed portion and is wrapped in the top section.

9. The ultra-high performance concrete pushing and leveling device according to any one of claims 1 to 3, characterized in that: Side bars are respectively provided on both sides of the screed plate, and the side bars are extended along the height direction of the screed plate. The side bars are movably connected to the movable frame. A longitudinal vibration motor is provided on the screed plate, and the longitudinal vibration motor drives the screed plate to reciprocate longitudinal vibration.

10. The ultra-high performance concrete pushing and leveling device according to claim 9, characterized in that: The side bars are arranged with the same length as the height of the screed plate, and a longitudinal rail groove is provided in the movable frame, and the side bars are movably embedded in the longitudinal rail groove; a top head is provided on the top of the side bar, and a spring is provided between the top head and the movable frame, and the spring is deformed back and forth during the reciprocating longitudinal vibration of the screed plate.

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