Ultra-high performance concrete full-width leveling structure
By setting up a leveling structure with a movable frame and a displaced frame on the guide rail, combined with longitudinal vibration and lateral displaced movement, the problem of full-width leveling of ultra-high performance concrete is solved, the flatness and density of the concrete are improved, and the leveling effect is improved.
Patent Information
- Application Number
- CN202510946335.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-09
- Publication Date
- 2025-09-26
AI Technical Summary
In the existing technology, the leveling effect of ultra-high performance concrete is poor, especially the inability to achieve uniform leveling across the entire width, resulting in poor concrete surface flatness and insufficient density, affecting structural performance and durability.
The mobile frame is arranged on the guide rail, the lifting shaft is connected to the horizontal frame, and the staggered frame is equipped with a screed plate and a vibration motor. The screed plate realizes full-width leveling and uniform vibration transmission through longitudinal vibration and lateral staggered movement, combined with the design of arrayed blind holes and counterweight shafts.
It achieves uniform leveling of the entire width of ultra-high performance concrete, improves the flatness and density of the concrete surface, improves the leveling effect, and enhances the durability of the concrete.
Smart Images
Figure CN120700761A_ABST
Abstract
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 full-width leveling structure. Background Art
[0002] Ultra-high performance concrete (UHPC) is a new type of building material with ultra-high strength, high toughness and excellent durability. With the continuous improvement of concrete performance requirements in modern construction projects, ultra-high performance concrete has been widely used in key structures such as bridges, roads, and high-rise buildings.
[0003] During the construction of ultra-high performance concrete, good leveling effect can ensure the flatness and density of the concrete surface, which in turn affects the overall performance and service life of the concrete structure. This shows the importance of the leveling process.
[0004] In the existing technology, ultra-high performance concrete leveling methods usually use manual scraping or simple mechanical vibration leveling. On the one hand, manual leveling is inefficient and difficult to ensure construction progress. Manual operation can easily lead to uneven leveling, affecting the surface quality of the concrete. On the other hand, simple mechanical vibration leveling structures can often only vibrate the concrete locally and cannot achieve uniform leveling across the entire width, resulting in variations in the concrete surface flatness and reducing the overall performance of the concrete structure.
[0005] In addition, ultra-high performance concrete has high viscosity and strength. The existing leveling method is difficult to effectively stimulate the fluidity of concrete so that it can fully fill every corner of the formwork. As a result, problems such as uneven concrete distribution and residual bubbles are likely to occur during the leveling process, further affecting the density and durability of the concrete. Summary of the Invention
[0006] The purpose of the present invention is to provide an ultra-high performance concrete full-width leveling structure, aiming to solve the problem of poor leveling effect of ultra-high performance concrete in the prior art.
[0007] The present invention is implemented as follows: an ultra-high performance concrete full-width leveling structure includes guide rails arranged on both sides of a roadbed and a movable frame arranged on the two guide rails, wherein the movable frame is arranged across the roadbed, and a material layer formed by paving ultra-high performance concrete is provided on the roadbed;
[0008] The movable frame is provided with a lifting shaft for longitudinal movement, the bottom of the lifting shaft is connected to a transverse frame, the transverse frame is connected to a dislocation frame for transverse displacement relative to the transverse shaft, the dislocation frame is provided with a plurality of elastically connected screed plates, the screed plates are connected to a vibration motor for longitudinal vibration, and the vibration motor drives the longitudinal vibration;
[0009] Along the width direction of the roadbed, a plurality of screed plates are sequentially spaced apart, with a leveling interval between adjacent screed plates; after the movable frame moves along the guide rail to a set position, the lifting shaft moves downward until the screed plate is pressed against the material layer, and the vibration motor drives the screed plate to vibrate longitudinally, so that the screed plate levels the ultra-high performance concrete of the material layer; in the process of the screed plate vibrating longitudinally on the material layer to level the material layer, the shifting frame is shifted transversely relative to the transverse frame, so that the plurality of screed plates level the entire width of the material layer;
[0010] The screed plate is flat and has a plurality of blind holes therein, which are arranged in an array; the bottoms of the blind holes are closed, and the tops of the blind holes pass through the top of the screed plate to form a top opening; a counterweight shaft is provided in the lower part of the blind hole, and the bottom of the counterweight shaft abuts against the bottom of the blind hole; an elastic member is provided at the upper part of the blind hole, and the elastic member abuts against the top of the counterweight shaft from top to bottom; the top opening is covered with a sealing plate, which presses against the elastic member, and the elastic member is in a compressed and deformed state; during the longitudinal vibration of the screed plate, the plurality of counterweight shafts vibrate synchronously longitudinally, applying an array-like vibration pressure to the screed plate.
[0011] Furthermore, the shift frame is movably connected to the transverse frame, and an end of the shift frame is connected to a drive motor, and the drive motor drives the shift frame to move relative to the transverse frame.
[0012] Furthermore, the top of the shift frame is provided with a top bar, and the transverse frame is provided with a rail groove, the top bar is movably embedded in the rail groove, and the top bar and the rail groove are respectively extended along the width direction of the roadbed.
[0013] Furthermore, along the width direction of the roadbed, the top of the shift frame has a plurality of top bars, and the plurality of top bars are arranged in sequence and at intervals, and the transverse frame is provided with a plurality of rail grooves, and the plurality of rail grooves are arranged in sequence and at intervals.
[0014] Furthermore, a longitudinally arranged movable shaft is provided on the screed plate, the movable shaft is movably inserted into the offset frame, a spring is provided between the movable shaft and the offset frame, and the vibration motor is connected to the top of the movable shaft; when the vibration motor drives the movable shaft to vibrate longitudinally, the screed plate vibrates longitudinally synchronously, and the spring deforms longitudinally.
[0015] Furthermore, the top of the movable shaft passes through the offset frame longitudinally to form a top section, and a top head is provided on the top section. The spring is sleeved on the outer periphery of the top section, the bottom of the spring abuts against the offset frame, the top of the spring abuts against the top head, and the vibration motor is connected to the top head.
[0016] Furthermore, the bottom of the screed plate has a flat screed surface, and during the longitudinal vibration of the screed plate, the screed surface abuts against the top of the fabric layer.
[0017] Furthermore, the bottom of the blind hole is spherical, forming a spherical groove; the lower part of the counterweight shaft has a ball head section, which is spherical and embedded in the spherical groove, and the outer surface of the ball head section abuts against the inner wall of the spherical groove.
[0018] Furthermore, the upper part of the counterweight shaft has a straight column section, the blind hole has a straight cylindrical groove, the column section is placed in the straight cylindrical groove, the diameter of the column section is smaller than the diameter of the straight cylindrical groove, and there is an annular gap between the outer periphery of the column section and the inner side wall of the straight cylindrical groove.
[0019] Furthermore, the top of the counterweight shaft is recessed downward to form a conical positioning groove, the bottom of the positioning groove has an upwardly arranged conical surface, the middle of the positioning groove has a positioning column, the bottom of the spring is fixedly sleeved on the positioning column and abuts against the conical surface.
[0020] Compared with the existing technology, the ultra-high performance concrete full-width leveling structure provided by the present invention has the following technical advantages:
[0021] 1) By arranging a mobile frame across the roadbed on the guide rail, and setting a longitudinally movable lifting shaft on the mobile frame, connecting a transverse frame to the bottom of the lifting shaft, connecting a displaced frame that can be displaced laterally on the transverse frame, and setting multiple screed plates connected to longitudinally vibrating vibration motors on the displaced frame, the entire structure can be flexibly moved and adjusted along the width of the roadbed;
[0022] When the mobile frame moves to the set position along the guide rail, the lifting shaft moves downward, so that the screed plate presses against the fabric layer formed by the ultra-high performance concrete paving. The vibration motor drives the screed plate to vibrate longitudinally to perform preliminary leveling of the ultra-high performance concrete.
[0023] During this process, the lateral offset movement of the staggered frame enables multiple screed plates arranged in sequence to level the entire width of the fabric layer, effectively solving the problem of limited leveling width and inability to achieve full-width leveling, and improving the flatness and uniformity of the concrete surface.
[0024] 2) The screed plate is flat and has a plurality of blind holes arranged in an array inside. The bottom of the blind holes is closed and the top passes through the screed plate to form an opening. The counterweight shaft and the elastic member are set in the blind holes, and the elastic member is compressed by the sealing plate;
[0025] When the screed plate vibrates longitudinally, multiple counterweight shafts vibrate synchronously longitudinally, applying array-type vibration pressure to the screed plate. This enables the vibration to be transmitted to the concrete more evenly, fully stimulating the fluidity of the concrete, allowing it to better fill every corner of the formwork, reducing residual bubbles, thereby increasing the density and durability of the concrete and greatly improving the leveling effect of ultra-high performance concrete. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is a simplified schematic diagram of the ultra-high performance concrete full-width leveling structure provided by the present invention;
[0027] Figure 2 It is a structural schematic diagram of the movable frame and the screed provided by the present invention;
[0028] Figure 3 It is a cross-sectional schematic diagram of the screed provided by the present invention;
[0029] Figure 4 It is a structural schematic diagram of the staggered frame provided by the present invention;
[0030] Figure 5 This is a schematic diagram of the main view of the counterweight shaft provided by the present invention;
[0031] In the figure: guide rail 100, moving frame 101, cloth layer 102, lifting shaft 103, transverse frame 104, staggered frame 105, vibration motor 106, drive motor 107;
[0032] Screed plate 200, screed plane 201, movable shaft 202, spring 203, top section 204;
[0033] Blind hole 300 , counterweight shaft 301 , elastic member 302 , sealing plate 303 , ball head section 304 , column section 305 , positioning groove 306 , tapered surface 307 , positioning column 308 . DETAILED DESCRIPTION
[0034] 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.
[0035] The implementation of the present invention is described in detail below with reference to specific embodiments.
[0036] 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.
[0037] Reference Figure 1-5 The figure shows a preferred embodiment of the present invention.
[0038] The ultra-high performance concrete full-width leveling structure includes guide rails 100 arranged on both sides of the roadbed and a movable frame 101 arranged on the two guide rails 100. The movable frame 101 is arranged across the roadbed, and a material layer 102 formed by paving ultra-high performance concrete is provided on the roadbed.
[0039] The movable frame 101 is provided with a lifting shaft 103 for longitudinal movement. The bottom of the lifting shaft 103 is connected to a transverse frame 104. The transverse frame 104 is connected to a shifting frame 105 for transverse displacement relative to the transverse shaft. The shifting frame 105 is provided with a plurality of elastically connected screed plates 200. The screed plates 200 are connected to a vibration motor 106 for longitudinal vibration, and the vibration motor 106 drives the longitudinal vibration.
[0040] Along the width of the roadbed, multiple screed plates 200 are arranged in sequence, with leveling intervals between adjacent screed plates 200. After the movable frame 101 moves along the guide rail 100 to a set position, the lifting shaft 103 moves downward until the screed plates 200 press against the material layer 102. The vibration motor 106 drives the screed plates 200 to vibrate longitudinally, so that the screed plates 200 level the ultra-high performance concrete of the material layer 102. During the process of the screed plates 200 vibrating longitudinally on the material layer 102 to level the material layer 102, the shifting frame 105 shifts laterally relative to the transverse frame 104, so that the multiple screed plates 200 level the entire width of the material layer 102.
[0041] The screed plate 200 is flat and is provided with a plurality of blind holes 300, which are arranged in an array. The bottom of the blind hole 300 is closed, and the top of the blind hole 300 passes through the top of the screed plate 200 to form a top opening. A counterweight shaft 301 is provided in the lower part of the blind hole 300, and the bottom of the counterweight shaft 301 abuts against the bottom of the blind hole 300. An elastic member 302 is provided at the upper part of the blind hole 300, and the elastic member 302 abuts against the top of the counterweight shaft 301 from top to bottom. The top opening is covered with a sealing plate 303, which presses against the elastic member 302, and the elastic member 302 is in a compressed and deformed state. During the longitudinal vibration of the screed plate 200, the plurality of counterweight shafts 301 vibrate synchronously longitudinally, applying an array-like vibration pressure to the screed plate 200.
[0042] The above-mentioned ultra-high performance concrete full-width leveling structure has the following technical advantages:
[0043] 1) A movable frame 101 is arranged across the roadbed on the guide rail 100, and a longitudinally movable lifting shaft 103 is provided on the movable frame 101. A transverse frame 104 is connected to the bottom of the lifting shaft 103, and a displaceable frame 105 that can be displaced laterally is connected to the transverse frame 104. A plurality of screed plates 200 connected to longitudinally vibrating vibration motors 106 are provided on the displaceable frame 105, so that the entire structure can be flexibly moved and adjusted along the width direction of the roadbed;
[0044] When the moving frame 101 moves to the set position along the guide rail 100, the lifting shaft 103 moves downward, so that the screed plate 200 is pressed against the material layer 102 formed by the ultra-high performance concrete paving. The vibration motor 106 drives the screed plate 200 to vibrate longitudinally to perform preliminary leveling of the ultra-high performance concrete.
[0045] During this process, the lateral offset movement setting of the shifting frame 105 enables multiple screed plates 200 arranged in sequence to level the entire width of the fabric layer 102, effectively solving the problem of limited leveling width and inability to achieve full-width leveling, and improving the flatness and uniformity of the concrete surface.
[0046] 2) The screed plate 200 is flat and has a plurality of blind holes 300 arranged in an array. The bottom of the blind holes 300 is closed and the top passes through the screed plate 200 to form an opening. A counterweight shaft 301 and an elastic member 302 are set in the blind holes 300, and the elastic member 302 is compressed by the sealing plate 303.
[0047] When the screed plate 200 vibrates longitudinally, the multiple counterweight shafts 301 vibrate longitudinally synchronously, applying an array of vibration pressure to the screed plate 200. This enables the vibration to be transmitted to the concrete more evenly, fully stimulating the fluidity of the concrete, allowing it to better fill every corner of the formwork, reducing residual bubbles, thereby improving the density and durability of the concrete and greatly improving the leveling effect of ultra-high performance concrete.
[0048] In this embodiment, the shift frame 105 is movably connected to the transverse frame 104 . The end of the shift frame 105 is connected to a drive motor 107 . The drive motor 107 drives the shift frame 105 to move relative to the transverse frame 104 .
[0049] In this way, precise lateral offset movement of the shift frame 105 is achieved, ensuring that multiple screed plates 200 can cover the entire width direction of the fabric layer 102 and perform effective full-width leveling, thereby solving the problem of limited leveling width of ultra-high performance concrete.
[0050] In this embodiment, the top of the shift frame 105 is provided with a top bar, and the transverse frame 104 is provided with a rail groove, the top bar is movably embedded in the rail groove, and the top bar and the rail groove are respectively extended along the width direction of the roadbed.
[0051] By movably embedding the top bar in the rail groove, the stability and guidance of the shifting frame 105 during the lateral movement are guaranteed, so that the leveling plate 200 can evenly level the fabric layer 102, thereby improving the uniformity of the leveling effect.
[0052] In this embodiment, along the width direction of the roadbed, the top of the shift frame 105 has multiple top bars, and the multiple top bars are arranged in sequence and at intervals. The transverse frame 104 is provided with multiple rail grooves, and the multiple rail grooves are arranged in sequence and at intervals.
[0053] The cooperation between the multiple top bars and the rail grooves further enhances the stability of the movement of the shift frame 105, making the leveling process smoother and helping to improve the leveling quality of ultra-high performance concrete.
[0054] In this embodiment, a longitudinally arranged movable shaft 202 is provided on the screed plate 200, and the movable shaft 202 is movably inserted into the shift frame 105. A spring 203 is provided between the movable shaft 202 and the shift frame 105, and a vibration motor 106 is connected to the top of the movable shaft 202; in the process of the vibration motor 106 driving the movable shaft 202 to vibrate longitudinally, the screed plate 200 vibrates longitudinally synchronously, and the spring 203 deforms longitudinally.
[0055] In this way, while achieving longitudinal vibration of the screed plate 200, the ultra-high performance concrete can be effectively vibrated and leveled, making the concrete more compact and the surface smoother.
[0056] In this embodiment, the top of the movable shaft 202 passes through the offset frame 105 longitudinally to form a top section 204. A top head is provided on the top section 204. The spring 203 is sleeved on the outer periphery of the top section 204. The bottom of the spring 203 abuts against the offset frame 105. The top of the spring 203 abuts against the top head. The vibration motor 106 is connected to the top head.
[0057] Through the structural setting of the movable shaft 202, the vibration motor 106 can efficiently transmit vibration to the screed plate 200. At the same time, the setting of the spring 203 can buffer vibration, protect the equipment, and extend its service life.
[0058] In this embodiment, the bottom of the screed plate 200 has a flat screed surface 201 . During the longitudinal vibration of the screed plate 200 , the screed surface 201 abuts against the top of the fabric layer 102 .
[0059] In this way, the flat leveling surface 201 can ensure good contact with the fabric layer 102, so that the vibration energy is evenly transmitted to the concrete, further improving the leveling effect and avoiding uneven leveling.
[0060] In this embodiment, the bottom of the blind hole 300 is spherical, forming a spherical groove; the lower part of the counterweight shaft 301 has a ball head section 304, which is spherical and embedded in the spherical groove. The outer surface of the ball head section 304 abuts against the inner wall of the spherical groove.
[0061] By arranging the ball head section 304 to be embedded in the spherical groove, the counterweight shaft 301 can be allowed to have a certain degree of freedom of swing during the vibration process, thereby being able to better adapt to the unevenness of the concrete surface and improving the leveling effect.
[0062] In this embodiment, the upper part of the counterweight shaft 301 has a straight column section 305, the blind hole 300 has a straight cylindrical groove, the column section 305 is placed in the straight cylindrical groove, the diameter of the column section 305 is smaller than the diameter of the straight cylindrical groove, and there is an annular gap between the outer periphery of the column section 305 and the inner wall of the straight cylindrical groove.
[0063] In this way, not only the friction between the counterweight shaft 301 and the blind hole 300 is reduced, but also the smooth transmission of vibration is ensured, thereby improving the vibration efficiency.
[0064] In this embodiment, the top of the counterweight shaft 301 is recessed downward to form a conical positioning groove 306, the bottom of the positioning groove 306 has an upwardly arranged conical surface 307, and the middle of the positioning groove 306 has a positioning column 308. The bottom of the spring 203 is fixedly sleeved on the positioning column 308 and abuts against the conical surface 307.
[0065] The conical positioning setting of the counterweight shaft 301 helps to stably install and accurately position the spring 203, ensures the uniform transmission of the force of the spring 203 during the vibration process, and enhances the stability of the leveling effect.
[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 full-width leveling structure, characterized by: The invention comprises guide rails arranged on both sides of a roadbed and a movable frame arranged on the two guide rails, wherein the movable frame is arranged across the roadbed, and a material layer formed by paving ultra-high performance concrete is provided on the roadbed; The movable frame is provided with a lifting shaft for longitudinal movement, the bottom of the lifting shaft is connected to a transverse frame, the transverse frame is connected to a dislocation frame for transverse displacement relative to the transverse shaft, the dislocation frame is provided with a plurality of elastically connected screed plates, the screed plates are connected to a vibration motor for longitudinal vibration, and the vibration motor drives the longitudinal vibration; Along the width direction of the roadbed, a plurality of screed plates are sequentially spaced apart, with a leveling interval between adjacent screed plates; after the movable frame moves along the guide rail to a set position, the lifting shaft moves downward until the screed plate is pressed against the material layer, and the vibration motor drives the screed plate to vibrate longitudinally, so that the screed plate levels the ultra-high performance concrete of the material layer; in the process of the screed plate vibrating longitudinally on the material layer to level the material layer, the shifting frame is shifted transversely relative to the transverse frame, so that the plurality of screed plates level the entire width of the material layer; The screed plate is flat and has a plurality of blind holes therein, which are arranged in an array; the bottoms of the blind holes are closed, and the tops of the blind holes pass through the top of the screed plate to form a top opening; a counterweight shaft is provided in the lower part of the blind hole, and the bottom of the counterweight shaft abuts against the bottom of the blind hole; an elastic member is provided at the upper part of the blind hole, and the elastic member abuts against the top of the counterweight shaft from top to bottom; the top opening is covered with a sealing plate, which presses against the elastic member, and the elastic member is in a compressed and deformed state; during the longitudinal vibration of the screed plate, the plurality of counterweight shafts vibrate synchronously longitudinally, applying an array-like vibration pressure to the screed plate.
2. The ultra-high performance concrete full-width leveling structure according to claim 1, characterized in that: The dislocation frame is movably connected to the transverse frame. An end of the dislocation frame is connected to a driving motor. The driving motor drives the dislocation frame to move relative to the transverse frame.
3. The ultra-high performance concrete full-width leveling structure according to claim 1, characterized in that: The top of the shift frame is provided with a top bar, and the transverse frame is provided with a rail groove, the top bar is movably embedded in the rail groove, and the top bar and the rail groove are respectively extended along the width direction of the roadbed.
4. The ultra-high performance concrete full-width leveling structure according to claim 3, characterized in that: Along the width direction of the roadbed, the top of the shift frame is provided with a plurality of top bars, and the plurality of top bars are arranged in sequence and at intervals. The transverse frame is provided with a plurality of rail grooves, and the plurality of rail grooves are arranged in sequence and at intervals.
5. The ultra-high performance concrete full-width leveling structure according to any one of claims 1 to 4, characterized in that: A longitudinally arranged movable shaft is provided on the screed plate, and the movable shaft is movably inserted into the offset frame. A spring is provided between the movable shaft and the offset frame, and the vibration motor is connected to the top of the movable shaft. When the vibration motor drives the movable shaft to vibrate longitudinally, the screed plate vibrates longitudinally synchronously, and the spring deforms longitudinally.
6. The ultra-high performance concrete full-width leveling structure according to claim 5, characterized in that: The top of the movable shaft passes through the offset frame longitudinally to form a top section, and a top head is provided on the top section. The spring is sleeved on the outer periphery of the top section, the bottom of the spring abuts on the offset frame, the top of the spring abuts against the top head, and the vibration motor is connected to the top head.
7. The ultra-high performance concrete full-width leveling structure according to any one of claims 1 to 4, characterized in that: The bottom of the screed plate has a flat screed surface, and during the longitudinal vibration of the screed plate, the screed surface abuts against the top of the fabric layer.
8. The ultra-high performance concrete full-width leveling structure according to any one of claims 1 to 4, characterized in that: The bottom of the blind hole is spherical, forming a spherical groove; the lower part of the counterweight shaft has a ball head section, which is spherical and embedded in the spherical groove, and the outer surface of the ball head section abuts against the inner wall of the spherical groove.
9. The ultra-high performance concrete full-width leveling structure according to any one of claims 1 to 4, characterized in that: The upper part of the counterweight shaft has a straight column section, the blind hole has a straight cylindrical groove, the column section is placed in the straight cylindrical groove, the diameter of the column section is smaller than the diameter of the straight cylindrical groove, and there is an annular gap between the outer periphery of the column section and the inner side wall of the straight cylindrical groove.
10. The ultra-high performance concrete full-width leveling structure according to claim 5, characterized in that: The top of the counterweight shaft is recessed downward to form a conical positioning groove, the bottom of the positioning groove has an upwardly arranged conical surface, the middle of the positioning groove has a positioning column, the bottom of the spring is fixedly sleeved on the positioning column and abuts against the conical surface.