Concrete surface leveling device

Abstract

The utility model discloses a concrete surface leveling device which comprises two left supports and two right supports, the inner sides of the left supports and the right supports are both provided with upper connecting rods capable of moving front and back in a driving mode, the bottom ends of the upper connecting rods are connected with lower connecting rods, and the lower connecting rods are connected with upper connecting rods. A horizontal floating rule which is transversely distributed is connected between the bottom ends of the lower connecting rods, high-frequency vibrators are installed on the two sides of the top of the horizontal floating rule, and the two ends of the horizontal floating rule are connected with the bottom ends of the lower connecting rods through elastic connecting mechanisms. According to the concrete surface leveling device, through automatic mechanical operation, the labor intensity of workers is greatly relieved, the construction efficiency is remarkably improved, accurate control over the flatness of the concrete surface is achieved, the influence of human factors is reduced, and high stability and consistency of the flatness of the top face are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, in particular to a concrete surface leveling device. Background Art

[0002] With the rapid development of infrastructure construction, precast segmental beams have been widely used in bridge engineering due to their high efficiency and precise construction characteristics. The manufacturing accuracy of precast segmental beams is directly related to the overall quality and service life of the bridge. Among them, the flatness of the concrete on the top surface of the beam is one of the key indicators to measure the quality of precast components.

[0003] The traditional concrete leveling operation on the top surface of prefabricated segmental beams relies on manual operation, usually with the assistance of a horizontal scraper, one end of which fits the laid matching beam segment, and the other end relies on a fixed end template for scraping and leveling. This method is not only labor-intensive, but also inefficient, and difficult to meet the needs of large-scale production. In addition, the subjectivity and instability of manual operation lead to large variables in the control of the flatness of the top surface of the beam, making it difficult to achieve high precision and high consistency requirements, affecting the smooth progress of the subsequent bridge deck paving and the beauty and safety of the overall structure. Utility Model Content

[0004] The purpose of the utility model is to provide a concrete surface leveling device to solve the problem raised in the above-mentioned background technology that the concrete leveling of the top surface of the prefabricated segment beam currently relies on manual use of a horizontal scraper. This method has high labor intensity and low efficiency and is not suitable for large-scale production. In addition, the flatness control is unstable due to human factors and high precision and consistency cannot be ensured.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a concrete surface leveling device, comprising a left bracket and a right bracket, wherein two of the left bracket and two of the right bracket are provided respectively, and an upper connecting rod that can be displaced forward and backward is driven on the inner side of the left bracket and the right bracket, and the bottom end of the upper connecting rod is connected to a lower connecting rod, and a horizontal scraper distributed laterally is connected between the bottom ends of the lower connecting rods, and high-frequency vibrators are installed on both sides of the top of the horizontal scraper, and the two ends of the horizontal scraper are connected to the bottom end of the lower connecting rod through an elastic connection mechanism.

[0006] Preferably, the elastic connecting mechanism includes a fixed sleeve, a movable shaft, a pressure ring and a spring, the fixed sleeve is fixed on the inner side of the bottom end of the lower connecting rod, the movable shaft is fixed on both sides of the top of the horizontal scraper and forms a sliding connection with the fixed sleeve, the pressure ring is sleeved on the outside of the upper end of the movable shaft, the spring is connected between the bottom of the pressure ring and the top of the horizontal scraper, and the spring is also sleeved on the outside of the movable shaft.

[0007] Preferably, a vertical shaft is provided on the outer side of the bottom end of the lower connecting rod through a notch, and a positioning sleeve is provided on the outer side of the vertical shaft, and one end of the positioning sleeve extends to the inner side of the lower connecting rod and is fixedly connected to the pressure ring.

[0008] Preferably, an elastic block is fixed to the bottom end of the lower connecting rod, and the elastic block fits in a position corresponding to the top of the horizontal scraper.

[0009] Preferably, an extension rod is provided at the bottom end of the upper connecting rod, and an extension hole matching the extension rod structure is provided inside the top end of the lower connecting rod.

[0010] Preferably, a cylinder is fixed to the outer side of the upper connecting rod, and the output end of the cylinder is fixedly connected to the inner side of the top end of the lower connecting rod via a connecting block.

[0011] Preferably, the high-frequency vibrator is symmetrically fixed on the top of the horizontal scraper through a bottom plate, and a protective cover is installed on the outside of the bottom plate.

[0012] Preferably, a left support block is fixed on the inner side of the top end of the left bracket, a transmission screw is connected between the left support blocks, and a motor is installed on the outer side of one of the left support blocks.

[0013] Preferably, a right support block is fixed on the inner side of the top end of the right bracket, and a sliding rod is connected between the right support blocks.

[0014] Preferably, one of the top ends of the upper connecting rod is provided with a threaded sleeve sleeved on the outside of the transmission screw rod, and the other top end of the upper connecting rod is provided with a movable sleeve slidably sleeved on the outside of the slide rod.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the concrete surface leveling device greatly reduces the labor intensity of manual labor through automated mechanical operation, significantly improves construction efficiency, and realizes precise control of the flatness of the concrete surface, reduces the influence of human factors, and ensures the high stability and consistency of the top surface flatness. The device drives the horizontal scraper to automatically level the concrete surface through the synchronous movement of the upper connecting rod and the lower connecting rod on the inner side of the bracket. At the same time, the high-frequency vibrator makes the concrete flow evenly, discharges bubbles, and strengthens the structure. The elastic connection between the two ends of the horizontal scraper and the lower connecting rod allows the ruler to adapt to the surface fine-tuning to ensure the flatness accuracy. Compared with manual labor, the device effectively reduces labor intensity, accelerates construction, improves the stability and consistency of flatness, and meets the requirements of large-scale production and high precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a concrete surface leveling device of the utility model;

[0017] Figure 2This is a schematic diagram of the connection structure of an upper connecting rod and a lower connecting rod of a concrete surface leveling device of the utility model;

[0018] Figure 3 The utility model is a top view structural schematic diagram of a concrete surface leveling device.

[0019] In the figure: 1. left bracket; 2. right bracket; 3. upper connecting rod; 4. lower connecting rod; 5. fixed sleeve; 6. movable shaft; 7. horizontal scraper; 8. high-frequency vibrator; 9. bottom plate; 10. protective cover; 11. left support block; 12. cylinder; 13. vertical shaft; 14. positioning sleeve; 15. pressure ring; 16. spring; 17. elastic block; 18. right support block; 19. extension rod; 20. transmission screw; 21. threaded sleeve; 22. slide rod; 23. movable sleeve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3The utility model provides a technical solution: a concrete surface leveling device, including a left bracket 1 and a right bracket 2, each of which is provided with two, and the left bracket 1 and the right bracket 2 constitute a stable frame of the device, and the inner sides of the left bracket 1 and the right bracket 2 are driven with an upper connecting rod 3 that can be displaced forward and backward, and the bottom ends of the upper connecting rod 3 are connected to the lower connecting rod 4, and the bottom ends of the lower connecting rod 4 are connected with a horizontal scraper 7 distributed laterally, and high-frequency vibrators 8 are installed on both sides of the top of the horizontal scraper 7, and the two ends of the horizontal scraper 7 are connected to the bottom end of the lower connecting rod 4 through an elastic connection mechanism. The upper connecting rod 3 and the lower connecting rod 4 of this structure are synchronously displaced forward and backward on the inner sides of the left bracket 1 and the right bracket 2 to automatically control the smooth movement of the horizontal scraper 7 for leveling. The horizontal scraper 7 can generate fast and uniform vibrations through the high-frequency vibrator 8 during operation, so as to promote the concrete material to flow evenly and self-level in the initial solidification stage, and effectively discharge internal bubbles, thereby improving the density and strength of the structure. At the same time, an elastic connection mechanism is adopted between the two ends of the horizontal scraper 7 and the bottom end of the lower connecting rod 4, so that the horizontal scraper 7 can adapt to the slight changes of the concrete surface and make fine adjustments, further ensuring the accuracy of leveling and the uniformity of the effect. Compared with the traditional leveling operation relying on manual operation, the device greatly reduces the labor burden of workers through the exquisite cooperation of automated machinery, significantly speeds up the construction process, and replaces the uncertainty and instability of manual operation with the stability and precision of machinery. Whether in large-scale production or under strict requirements of high precision and high consistency, the operation can be completed well to ensure that the flatness of the concrete on the top surface of the prefabricated segmental beam reaches a high level, laying a solid foundation for the smooth implementation of the subsequent bridge deck paving, while also ensuring the overall beauty and structural safety of the bridge. The elastic connection mechanism includes a fixed sleeve 5, a movable shaft 6, a pressure ring 15 and a spring 16. The fixed sleeve 5 is welded and fixed to the inner side of the bottom end of the lower connecting rod 4, the movable shaft 6 is fixed to both sides of the top of the horizontal scraper 7 and forms a sliding connection with the fixed sleeve 5, the pressure ring 15 is sleeved on the outside of the upper end of the movable shaft 6, the spring 16 is connected between the bottom of the pressure ring 15 and the top of the horizontal scraper 7, and the spring 16 is also sleeved on the outside of the movable shaft 6. The horizontal scraper 7 of this structure is in operation. It will drive the movable shaft 6 to slide to a certain extent in the fixed sleeve 5. When the movable shaft 6 slides, it will generate a force on the spring 16 with the cooperation of the pressure ring 15. The spring 16 can automatically adjust the contact pressure and position of the horizontal scraper 7 and the concrete surface through its own compression or extension to ensure the continuity and stability of the scraping operation. The outer side of the bottom end of the lower connecting rod 4 is provided with a vertical shaft 13 through a recess, and the outer sleeve of the vertical shaft 13 is provided with a positioning sleeve 14. A locking screw is connected to the positioning sleeve 14 through a threaded structure, and one end of the positioning sleeve 14 extends to the inner side of the lower connecting rod 4 and is fixedly connected to the pressure ring 15. A vertical through hole matching the positioning sleeve 14 structure is provided in the outer recess at the bottom end of the lower connecting rod 4. The positioning sleeve 14 of this structure can be adjusted in the up and down position on the vertical shaft 13.The position of the pressure ring 15 relative to the upper end of the movable shaft 6 is indirectly changed, which directly affects the compression degree of the spring 16, that is, the upward adjustment of the position of the pressure ring 15 will reduce the spring compression, and vice versa. The change in the compression amplitude of the spring 16 directly controls the pressure applied by the horizontal scraper 7 to the concrete surface during operation, that is, the amplitude of the elastic pressing, and realizes the fine adjustment of the scraping force. The bottom end of the lower connecting rod 4 is bonded and fixed with an elastic block 17, and the elastic block 17 fits with the corresponding position of the top of the horizontal scraper 7. The elastic block 17 of this structure can be used as a buffer element to absorb and disperse the instantaneous impact force and vibration of the horizontal scraper 7 during the scraping process, ensuring that the horizontal scraper 7 maintains good stability and fit during operation. An extension rod 19 is provided at the end, and an extension hole that matches the structure of the extension rod 19 is provided inside the top end of the lower connecting rod 4. A cylinder 12 is fixed to the outside of the upper connecting rod 3 by bolts, and the output end of the cylinder 12 is fixedly connected to the inner side of the top end of the lower connecting rod 4 by a connecting block. When the cylinder 12 of this structure drives the lower connecting rod 4, the lower connecting rod 4 will slide along the outside of the extension rod 19 through the extension hole to adjust the relative distance between the upper connecting rod 3 and the lower connecting rod 4 according to actual needs, thereby changing the working height of the horizontal scraper 7 to adapt to the top surfaces of prefabricated segmental beams of different specifications and heights for efficient scraping and leveling operations, thereby ensuring the efficiency and accuracy of the scraping and leveling operations. The high-frequency vibrator 8 is symmetrically welded and fixed to the top of the horizontal scraper 7 through the bottom plate 9, and the outside of the bottom plate 9 is fixed with screws. Protective cover 10. The function of the protective cover 10 of this structure is to protect the high-frequency vibrator 8 from damage by external factors, such as splashing concrete slurry, dust and other physical impacts at other construction sites during operation. The use of the protective cover 10 not only prolongs the service life of the vibrator, but also ensures the safety of the operation site to prevent accidental contact with the vibrator and cause damage. The inner side of the top of the left bracket 1 is welded and fixed with a left support block 11, and a transmission screw 20 is connected between the left support blocks 11. Both ends of the transmission screw 20 are connected to the left support blocks 11 through bearings, and a motor is installed on the outer side of one of the left support blocks 11. The output end of the motor is connected to one end of the transmission screw 20. The inner side of the top of the right bracket 2 is welded and fixed with a right support block 18. The right support block A slide bar 22 is connected between the upper connecting rod 3 and the upper connecting rod 3. One of the top ends of the upper connecting rod 3 is provided with a threaded sleeve 21 sleeved on the outside of the transmission screw 20, and the other top end of the upper connecting rod 3 is provided with a movable sleeve 23 sleeved on the outside of the slide bar 22. When the motor on the left support block 11 is started and the transmission screw 20 is rotated, the threaded sleeve 21 can be connected with the upper connecting rod 3 to convert the rotational motion of the motor into the linear motion of the upper connecting rod 3 along the transmission screw 20 to achieve advancement or withdrawal in one direction. The slide bar 22 provides a guide rail parallel to the transmission screw 20, so that this end of the upper connecting rod 3 can slide freely on the slide bar 22, combined with the linear motion of the end of the transmission screw 20, and then drive the horizontal scraper 7 to move accurately forward and backward on the concrete surface.

[0022] Working principle: When using the concrete surface leveling device, first start the motor on the left support block 11, and drive one end of the upper connecting rod 3 on the left bracket 1 to move in a straight line through the transmission screw 20, while the other upper connecting rod 3 slides on the slide rod 22. As the upper connecting rod 3 moves through the connection of the lower connecting rod 4, the horizontal scraper 7 slides smoothly on the concrete surface to perform the leveling operation. During this process, the high-frequency vibrator 8 can generate fast and uniform vibrations under the action of power, which helps the concrete material flow and removes bubbles, and the horizontal scraper 7 will drive the movable shaft 6 to generate a certain amplitude in the fixed sleeve 5 during operation. When the movable shaft 6 slides, it will generate a force on the spring 16 with the cooperation of the pressure ring 15 to ensure that it can adapt to the slight changes in the concrete surface during scraping, so as to finely adjust the scraping force. The elastic block 17 at the bottom end of the lower connecting rod 4 plays a buffering role in the operation to maintain a stable working state. At the same time, the extension rod 19 driven by the cylinder 12 and the extension hole at the top of the lower connecting rod 4 can adjust the height of the horizontal scraper 7 to meet the needs of prefabricated segmental beams of different specifications. The setting of the protective cover 10 effectively protects the high-frequency vibrator 8 to avoid external pollution during operation, thereby completing a series of tasks.

[0023] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A concrete surface leveling device, comprising a left bracket (1) and a right bracket (2), wherein two of the left bracket (1) and two of the right bracket (2) are provided, and characterized in that: The inner sides of the left bracket (1) and the right bracket (2) are driven to have an upper connecting rod (3) that can move forward and backward, the bottom end of the upper connecting rod (3) is connected to a lower connecting rod (4), the bottom ends of the lower connecting rods (4) are connected to a horizontal scraper (7) that is distributed laterally, high-frequency vibrators (8) are installed on both sides of the top of the horizontal scraper (7), and the two ends of the horizontal scraper (7) are connected to the bottom end of the lower connecting rod (4) through an elastic connection mechanism.

2. A concrete surface leveling device according to claim 1, characterized in that: The elastic connection mechanism comprises a fixed sleeve (5), a movable shaft (6), a pressure ring (15) and a spring (16); the fixed sleeve (5) is fixed on the inner side of the bottom end of the lower connecting rod (4); the movable shaft (6) is fixed on both sides of the top of the horizontal scraper (7) and is slidably connected with the fixed sleeve (5); the pressure ring (15) is sleeved on the outside of the upper end of the movable shaft (6); the spring (16) is connected between the bottom of the pressure ring (15) and the top of the horizontal scraper (7), and the spring (16) is also sleeved on the outside of the movable shaft (6).

3. A concrete surface leveling device according to claim 2, characterized in that: A vertical shaft (13) is provided on the outer side of the bottom end of the lower connecting rod (4) through a notch, and a positioning sleeve (14) is provided on the outer side of the vertical shaft (13), and one end of the positioning sleeve (14) extends to the inner side of the lower connecting rod (4) and is fixedly connected to a pressure ring (15).

4. A concrete surface leveling device according to claim 1, characterized in that: An elastic block (17) is fixed to the bottom end of the lower connecting rod (4), and the elastic block (17) fits in a position corresponding to the top of the horizontal scraper (7).

5. A concrete surface leveling device according to claim 1, characterized in that: An extension rod (19) is provided at the bottom end of the upper connecting rod (3), and an extension hole matching the structure of the extension rod (19) is provided inside the top end of the lower connecting rod (4).

6. A concrete surface leveling device according to claim 5, characterized in that: A cylinder (12) is fixed on the outer side of the upper connecting rod (3), and the output end of the cylinder (12) is fixedly connected to the inner side of the top end of the lower connecting rod (4) via a connecting block.

7. A concrete surface leveling device according to claim 5, characterized in that: The high-frequency vibrator (8) is symmetrically fixed on the top of the horizontal scraper (7) through a bottom plate (9), and a protective cover (10) is installed outside the bottom plate (9).

8. A concrete surface leveling device according to claim 1, characterized in that: A left support block (11) is fixed on the inner side of the top end of the left bracket (1), a transmission screw rod (20) is connected between the left support blocks (11), and a motor is installed on the outer side of one of the left support blocks (11).

9. A concrete surface leveling device according to claim 8, characterized in that: A right support block (18) is fixed on the inner side of the top end of the right bracket (2), and a sliding rod (22) is connected between the right support blocks (18).

10. A concrete surface leveling device according to claim 9, characterized in that: One of the top ends of the upper connecting rod (3) is provided with a threaded sleeve (21) sleeved on the outside of the transmission screw rod (20), and the other top end of the upper connecting rod (3) is provided with a movable sleeve (23) slidably sleeved on the outside of the slide rod (22).

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