A reinforced concrete sleeper mold vibration forming device

Abstract

The utility model relates to concrete sleeper preparation technical field, concretely is a reinforced concrete sleeper mould vibration forming device, including fixed base, the upper end of fixed base is connected with mould body with sliding, the middle part fixed mounting of mould body lower extreme has the support, one side fixed mounting of support has the gyro wheel, the one side of fixed base upper end middle part is provided with the guide rail, the other side of fixed base upper end middle part is provided with the installation groove, the both sides of middle part one end inner wall of installation groove all are fixedly installed with strong spring, one end of two strong springs all are fixedly installed with the baffle, the both sides of fixed base one end middle part all are provided with the moving groove, the middle part of two moving grooves all are connected with sliding block with sliding, the middle part rotation of two sliding blocks is installed with the pivot, the utility model solves the traditional reinforced concrete sleeper mould usually and the vibration structure between through rigid connection, there are many problems of many insufficiencies in actual use.

Description

Technical Field

[0001] This utility model relates to the field of concrete sleeper preparation technology, specifically a vibration molding device for reinforced concrete sleeper molds. Background Technology

[0002] Reinforced concrete sleepers, as a core component of modern railway engineering, are the most widely used and technologically mature type of concrete sleeper system. By rationally configuring ordinary steel bars or applying prestressed steel bars in the concrete matrix, they fully utilize the synergistic effect of the high tensile strength of steel bars and the excellent compressive strength of concrete, effectively overcoming the inherent weakness of concrete in tensile strength, and providing a stable and reliable supporting foundation for railway, subway and other rail transit systems.

[0003] Traditional reinforced concrete sleeper molds are typically rigidly connected to the vibrating structure, which has several shortcomings in practical use. For example, the molds and equipment are prone to damage, and the rigid connection allows vibration energy to be directly transferred to the mold. Under long-term high-frequency vibration, fatigue cracks are easily generated at the welded joints of the mold steel plates and stress concentration areas, such as the corners of the rail bearing groove, requiring periodic replacement. In addition, the vibration uniformity is poor. The rigid connection cannot guarantee the uniform distribution of vibration energy, and the amplitude varies greatly in different parts of the mold. For example, excessive amplitude at both ends of the sleeper can easily lead to concrete segregation and aggregate settlement; the middle part, due to the dense reinforcement, forms a vibration blind zone, resulting in defects such as honeycomb and voids, which seriously affect the strength and durability of the sleeper. Utility Model Content

[0004] One of the technical problems this application aims to solve is that traditional reinforced concrete sleeper molds are usually rigidly connected to the vibrating structure, which has many shortcomings in practical use. To address the aforementioned technical problems, this application provides a vibration molding device for reinforced concrete sleeper molds, comprising a fixed base, a mold body slidably engaged at the upper end of the fixed base, a bracket fixedly installed at the middle of the lower end of the mold body, a roller fixedly installed on one side of the bracket, a guide rail provided on one side of the middle of the upper end of the fixed base, and an installation groove provided on the other side of the middle of the upper end of the fixed base. Two strong springs are fixedly installed on both sides of the middle of one end of the inner wall of the installation groove, and baffles are fixedly installed at one end of each of the two strong springs. Two moving grooves are provided on both sides of the middle of one end of the fixed base, and sliders are slidably engaged at the middle of each of the two moving grooves. A rotating shaft is rotatably installed at the middle of the two sliders, and a cam is fixedly installed at the middle of the rotating shaft. A guide rod is installed at the middle of one of the moving grooves, and an electric push rod is fixedly installed at the middle of the other moving groove.

[0005] In some embodiments, a guide block is fixedly installed on one side of the lower middle portion of the mold body, a pulley is rotatably installed on the other side of the lower middle portion of the mold body, and handles are fixedly installed around the outer perimeter of the middle portion of the mold body.

[0006] In some embodiments, the guide rail and the mounting groove are connected, and the baffle at the end of the powerful spring abuts against one end of the mold body.

[0007] In some embodiments, the guide block and the pulley are slidably engaged with the guide rail, and one end of the guide rail is connected to a limit plate by a screw thread.

[0008] In some embodiments, one of the sliders and the guide rod are slidably engaged, and the telescopic end of the electric push rod is fixedly connected to the lower end of the other slider.

[0009] In some embodiments, a motor is fixedly mounted on one side of the slider connected to the electric push rod, and the output end of the motor is fixedly connected through one end of the slider and the rotating shaft.

[0010] This utility model has at least the following beneficial effects: 1. This utility model can significantly extend the mold life and reduce maintenance costs during use. By improving the direct rigid contact between the traditional concrete sleeper mold and the vibration mechanism to rolling contact, the low friction coefficient of rolling contact can effectively reduce the wear of the concrete sleeper mold and reduce the stress amplitude at the mold weld, thereby significantly improving the service life of the mold body.

[0011] 2. When in use, this utility model can effectively improve vibration uniformity and ensure the quality of the sleeper. The transmission structure of the roller and cam makes the amplitude difference between different parts of the mold small, which can effectively eliminate the under-vibration areas such as those with dense steel bars, significantly reduce the internal void ratio of the sleeper, make the energy distribution more even, reduce the strength difference between the upper and lower parts of the concrete in the mold, and thus significantly improve the durability of the sleeper. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the appearance and structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the bearing fixing seat of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the fixing base of this utility model; Figure 4 This is a cross-sectional schematic diagram of the connection between the cam and the roller of this utility model.

[0013] Figure 5 This is a schematic diagram showing the positional relationship between the baffle and the main body of the mold in this utility model.

[0014] In the diagram: 1. Fixed base; 11. Guide rail; 12. Mounting slot; 13. Strong spring; 14. Baffle; 15. Mold body; 16. Bracket; 17. Roller; 18. Pulley; 19. Guide block; 20. Handle; 2. Moving slot; 21. Guide rod; 22. Electric push rod; 23. Rotating shaft; 24. Slider; 25. Cam; 26. Motor; 27. Limiting plate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1: Please refer to Figures 1-5 This utility model provides a technical solution: a vibration molding device for reinforced concrete sleeper molds, including a fixed base 1, a mold body 15 slidably engaged at the upper end of the fixed base 1, a bracket 16 fixedly installed at the middle of the lower end of the mold body 15, a roller 17 fixedly installed on one side of the bracket 16, a guide rail 11 provided on one side of the middle of the upper end of the fixed base 1, and an installation groove 12 provided on the other side of the middle of the upper end of the fixed base 1. Two strong springs 13 are fixedly installed on both sides of the middle of one end of the inner wall of the installation groove 12, and baffles 14 are fixedly installed at one end of each of the two strong springs 13. Movable grooves are provided on both sides of the middle of one end of the fixed base 1. 2. A slider 24 is slidably engaged in the middle of each of the two moving slots 2. A rotating shaft 23 is rotatably mounted in the middle of the two sliders 24. A cam 25 is fixedly mounted in the middle of the rotating shaft 23. A guide rod 21 is mounted in the middle of one of the moving slots 2. An electric push rod 22 is fixedly mounted in the middle of the other moving slot 2. One slider 24 and the guide rod 21 are slidably engaged. The telescopic end of the electric push rod 22 is fixedly connected to the lower end of the other slider 24. A motor 26 is fixedly mounted on one side of the slider 24 connected to the electric push rod 22. The output end of the motor 26 passes through one end of the slider 24 and is fixedly connected to the rotating shaft 23.

[0017] In this embodiment, during the vibration molding process of the mold body 15, after the motor 26 is started, it drives the cam 25 to rotate via the rotating shaft 23. Since the cam 25 abuts against the roller 17 on one side of the support 16 below the mold body 15, the roller 17 will drive the mold body 15 to move back and forth along the guide rail 11 under the action of the convex and concave surfaces of the cam 25. During rotation, the convex and concave surfaces of the cam 25 alternately contact the roller 17. When the convex surface of the cam 25 pushes the roller 17, the mold body 15 moves horizontally towards the mounting groove 12, compressing the strong spring 13. When the concave surface of the cam 25 is in contact with the roller 17, the strong spring 13 returns to its original position, pushing the mold body 15 to move to the other side of the guide rail 11. This cycle repeats, forming the reciprocating linear vibration of the mold body 15 along the guide rail 11. During the vibration process... The air bubbles in the concrete mixture are more easily released by the alternating force, which reduces the number of air bubbles on the surface and eliminates the need for manual repair. The buffering effect of the roller 17 can prevent the mold body 15 from directly and rigidly contacting the cam 25 used to generate vibration, which can reduce fatigue damage to the mold body 15. The strong spring 13 absorbs the impact energy during vibration, which reduces the stress fluctuation at the weld of the mold steel plate and further extends the service life of the mold body 15. When the vibration operation of the reinforced concrete in the mold body 15 is completed and the mold body 15 needs to be removed, simply start the electric push rod 22 to drive the slider 24 and related components connected to it to move down along the guide rod 21, so that the cam 25 can remove the obstruction of the support 16 and roller 17 below the mold body 15, and it can be removed.

[0018] Example 2: As Figures 1-5 As shown, a guide block 19 is fixedly installed on one side of the lower middle part of the mold body 15, and a pulley 18 is rotatably installed on the other side of the lower middle part of the mold body 15. Handles 20 are fixedly installed on all four sides of the outer side of the middle part of the mold body 15. The guide rail 11 and the mounting groove 12 are connected. The baffle 14 at the end of the strong spring 13 abuts against one end of the mold body 15. The guide block 19 and the pulley 18 are slidably engaged with the guide rail 11. One end of the guide rail 11 is connected to a limit plate 27 by screw thread.

[0019] In this embodiment, the guide block 19 and the pulley 18 are respectively set on both sides of the bottom of the sleeper mold to form a stable support. During vibration, the guide block 19 slides linearly along the guide rail 11 to limit the lateral displacement of the mold. The pulley 18 reduces frictional resistance by rolling, so that the vibration energy is converted into work on the concrete more efficiently. The limiting plate 27 at the end of the guide rail 11 is fixed by screws, which can prevent the mold body 15 from sliding off the guide rail 11 during operation. Multiple handles 20 are evenly distributed around the mold body 15. When the mold is hoisted or moved manually, the operator can hold it stably through the handles 20 to avoid the risk of slippage caused by the smooth surface of traditional molds.

[0020] like Figures 1-5As shown, during use, the mold body 15 is first slidably inserted into the guide rail 11 of the fixed base 1 via the bottom pulley 18 and guide block 19, ensuring that the guide block 19 and the guide rail 11 are precisely matched. The limiting plate 27 is then fixed to the end of the guide rail 11 with screws to prevent the mold body 15 from slipping out during vibration. The electric push rod 22 is activated to drive the slider 24 to move upwards along the guide rod 21 until the cam 25 is tightly abutted against the roller 17 on one side of the support 16 below the mold body 15. The motor 26 is then activated to drive the rotating shaft 23 to rotate the cam 25. The convex and concave surfaces of the outer periphery of the cam 25 alternately act on the roller 17. When the convex surface pushes the roller 17, the mold body 15 moves towards... When the mounting slot 12 moves to the side, the compression spring 13 is activated. When the concave surface of the spring 13 contacts the roller 17, the spring returns to its original position, pushing the mold to move in the opposite direction. This cycle repeats, creating reciprocating linear vibration. The vibration of the mold reduces the friction between concrete particles, causing air bubbles to rise and be expelled under alternating forces. The spring 13 buffers the vibration impact and reduces the stress amplitude at the mold weld. The roller 17 and cam 25 are connected by rolling friction, which, compared to the direct rigid contact between the vibrator and the mold, effectively reduces mechanical wear and fatigue damage, thereby increasing the service life of the mold body 15. It also allows for more balanced transmission of vibration energy, thus improving the quality of concrete molding. After the vibration operation is completed, the slider 24 is driven down by the electric push rod 22, causing the cam 25 to disengage from the roller 17. Then, the limit plate 27 is removed, and the entire mold body 15 can be removed using the handle 20, allowing for the next round of operation.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A vibration molding device for reinforced concrete sleeper molds, comprising a fixed base (1), wherein a mold body (15) is slidably engaged at the upper end of the fixed base (1), characterized in that: A bracket (16) is fixedly installed at the middle of the lower end of the mold body (15). A roller (17) is fixedly installed on one side of the bracket (16). A guide rail (11) is provided on one side of the middle of the upper end of the fixed seat (1). An installation groove (12) is provided on the other side of the middle of the upper end of the fixed seat (1). A strong spring (13) is fixedly installed on both sides of the middle of one end of the inner wall of the installation groove (12). A baffle (14) is fixedly installed on one end of each of the two strong springs (13). A moving groove (2) is provided on both sides of the middle of one end of the fixed seat (1). A slider (24) is slidably engaged in the middle of each of the two moving grooves (2). A rotating shaft (23) is rotatably installed in the middle of each of the two sliders (24). A cam (25) is fixedly installed in the middle of the rotating shaft (23). A guide rod (21) is installed in the middle of one of the moving grooves (2). An electric push rod (22) is fixedly installed in the middle of the other moving groove (2).

2. A reinforced concrete sleeper mould vibration forming device according to claim 1, characterized in that: A guide block (19) is fixedly installed on one side of the lower middle part of the mold body (15), and a pulley (18) is rotatably installed on the other side of the lower middle part of the mold body (15). Handles (20) are fixedly installed on all four sides of the outer side of the middle part of the mold body (15).

3. A reinforced concrete sleeper mould vibration forming device according to claim 2, characterised in that: The guide rail (11) and the mounting groove (12) are connected, and the baffle (14) at the end of the strong spring (13) abuts against one end of the mold body (15).

4. The reinforced concrete sleeper mold vibration forming apparatus according to claim 2, characterized in that: The guide block (19) and pulley (18) are respectively slidably engaged with the guide rail (11), and one end of the guide rail (11) is connected to a limit plate (27) by a screw thread.

5. The reinforced concrete sleeper mold vibration forming apparatus according to claim 1, characterized in that: One of the sliders (24) and the guide rod (21) are slidably engaged, and the telescopic end of the electric push rod (22) is fixedly connected to the lower end of the other slider (24).

6. The vibration molding device for reinforced concrete railway sleeper molds according to claim 1, characterized in that: A motor (26) is fixedly installed on one side of the slider (24) connected to the electric push rod (22), and the output end of the motor (26) is fixedly connected through the slider (24) and one end of the rotating shaft (23).

Images