Mechanical centering device for arc-shaped I-shaped steel

Abstract

The utility model discloses a mechanical centering device for arc-shaped I-shaped steel. The mechanical centering device is assembled at the two ends of the arc-shaped I-shaped steel. Comprising a displacement platform, a centering mechanism and a driving assembly, and the centering mechanism is assembled on the displacement platform and slides in the length direction of the displacement platform; the centering mechanism comprises a movable base, a centering plate assembly and a supporting piece, and the centering plate assembly is assembled on the movable base through the supporting piece; the driving assembly is assembled on the movable base and used for driving the centering mechanism to move on the displacement platform. And the centering mechanism can be quickly and accurately adjusted to a proper position through the driving assembly, so that the labor intensity of workers is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a mechanical centering device for arc-shaped I-beams. Background Art

[0002] During tunnel construction, steel arches are widely used to support the tunnel floor. Tunnel arches are constructed from multiple connected steel arch segments. Each segment consists of a curved I-beam steel arch body and steel end plates welded to each end. Adjacent arch segments are butted together by flattening and securing the end plates. To ensure the stability of the butted segments, the end plates must align with the diameter of the circle containing the curved body, with the center of the arc located at the geometric center of the end plates. The straight I-beams are first bent into an arc of the desired curvature using a circular bending machine and then cut to the desired length using a cutting mechanism. Before cutting, a displacement sensor measures the length of the bent I-beam to ensure it matches the required length of the arch body. The cut arch body is then transported via a conveyor structure to the welding station, where it is welded to the end plates.

[0003] In existing technology, welding the connecting plate to the steel arch requires manual adjustment of the arch's position to ensure it is centered. This process is not only time-consuming and labor-intensive, but also has limited accuracy, severely restricting the accuracy and efficiency of automated welding of the steel arch and connecting plate. Utility Model Content

[0004] In order to overcome the above-mentioned defects in the prior art, a mechanical centering device for an arc-shaped I-beam is provided.

[0005] The technical solution of the present utility model is as follows: a mechanical centering device for an arc-shaped I-beam is assembled at both ends of the arc-shaped I-beam; it includes a displacement platform, a centering mechanism and a driving assembly, the centering mechanism is assembled on the displacement platform and slides along the length direction of the displacement platform; the centering mechanism includes a mobile base, a centering plate assembly and a support, the centering plate assembly is assembled on the mobile base through the support; the driving assembly is assembled on the mobile base, and is used to drive the centering mechanism to move on the displacement platform; the driving assembly enables the centering mechanism to be quickly and accurately adjusted to a suitable position, thereby reducing manual labor intensity and improving production efficiency.

[0006] Preferably, the drive assembly includes a motor and a driving gear. The motor is mounted on the upper end of the movable base, and an output structure is provided at the bottom of the motor, which passes through the movable base and connects to the driving gear. Gear transmission features precise transmission ratios and high transmission efficiency. The direct connection between the motor and the driving gear ensures the stability and accuracy of the centering mechanism during movement, while also improving transmission efficiency and reducing energy loss.

[0007] Preferably, two parallel rails are arranged on the displacement platform. These rails provide dual support for the mobile base or centering mechanism, effectively distributing the load and reducing the potential for sway or offset caused by single-point support. This improves stability during movement and ensures that the centering mechanism can move smoothly along the predetermined trajectory.

[0008] Preferably, a guide rack meshing with the driving gear is installed between the two rails. This meshing relationship ensures precise transmission. The gear rotation is converted into linear motion by the rack, driving the centering mechanism along a precise path on the displacement platform. This transmission method offers greater precision and reliability than traditional sliding or rolling friction systems.

[0009] Preferably, the lower end surface of the mobile base is equipped with a slider having a slot that engages with the slide rail. The tight fit between the slot and the slide rail provides precise guidance for the mobile base, ensuring that the mobile base always moves in the straight line of the slide rail during movement, reducing instability caused by deviation or shaking.

[0010] Preferably, the centering plate assembly comprises a first centering plate, a second centering plate, and a connecting fixture. The first and second centering plates are assembled to the support member via the connecting fixture. Precision machining and mating of the first and second centering plates ensure that key performance indicators such as parallelism, perpendicularity, and flatness between them meet design requirements. This precise fit provides a stable reference surface for the centering mechanism, thereby improving overall centering accuracy.

[0011] Preferably, the connecting fixture is mounted on the upper end of the support member and connected to the first and second centering plates via adjustable bolts. When the centering plate assembly requires maintenance, replacement, or adjustment, the centering plates can be easily removed by simply loosening the adjustable bolts. This design greatly simplifies maintenance and improves work efficiency. The use of adjustable bolts as connectors allows operators to fine-tune the position of the first and second centering plates as needed during assembly.

[0012] Preferably, the first and second centering plates are arranged perpendicular to each other. This arrangement allows the centering mechanism to maintain a better balance when subjected to force. This helps evenly distribute the load across the support points, thereby improving the load-bearing capacity and stability of the equipment.

[0013] Preferably, a plurality of reinforcement members are installed between the lower end of the support member and the movable base. The reinforcement members connect the support member and the movable base to form a more stable overall structure, reduce shaking or deviation caused by vibration, impact or load changes, and thus improve the stability of the device.

[0014] Preferably, the system also includes a position sensor mounted on the mobile base for monitoring the position of the centering mechanism. The position sensor continuously monitors the position changes of the centering mechanism and provides real-time feedback to the control system. This allows the control system to promptly understand the current status of the centering mechanism and make appropriate adjustments. By monitoring this position information in real time, the control system can precisely control the movement and positioning of the centering mechanism. This helps reduce errors caused by position deviation and improves the centering and machining accuracy of the equipment.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] A mechanical centering device for curved I-beams. The centering mechanism, which is mounted on both ends of the curved I-beam and driven by a drive assembly on a displacement platform, achieves high-precision positioning and centering of the curved I-beam. This helps reduce errors during processing or installation, improving product quality and efficiency.

[0017] Furthermore, this device can adapt to curved I-beams of different sizes and shapes and is suitable for a variety of application scenarios.

[0018] Furthermore, the centering process reduces manual intervention, lowers labor intensity, and shortens adjustment time for subsequent processing or installation, further improving overall work efficiency; it also reduces safety hazards during manual handling and positioning, and reduces the risk of work-related accidents.

[0019] Other features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the installation structure of a mechanical centering device for an arc-shaped I-beam according to the present invention;

[0022] Figure 2 This is a schematic diagram of the installation of the centering mechanism and drive assembly of the present invention;

[0023] Figure 3 This is a structural side view of a mechanical centering device for arc-shaped I-beams according to the present invention;

[0024] Figure 4 A schematic diagram of the working of a mechanical centering device for arc-shaped I-beams according to the present invention;

[0025] The following are the descriptions of the reference numerals:

[0026] Displacement platform 1, centering mechanism 2, drive assembly 3, movable base 21, centering plate assembly 22, support member 23, motor 31, output structure 311, driving gear 32, slide rail 11, guide rack 12, slider 211, slide groove 2111, first centering plate 221, second centering plate 222, connecting fixing member 223, adjustable bolt 224, reinforcement member 231. DETAILED DESCRIPTION

[0027] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0028] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0029] like Figures 1 to 4 As shown, a mechanical centering device for an arc-shaped I-beam is assembled at both ends of the arc-shaped I-beam 4; it includes a displacement platform 1, a centering mechanism 2, and a drive assembly 3. The centering mechanism 2 is assembled on the displacement platform 1 and slides along the length of the displacement platform 1; the displacement platform 1 is used to support the centering mechanism 2, providing a stable movement base for the centering mechanism 2; two slide rails 11 are arranged in parallel on the displacement platform 1 to guide the centering mechanism 2 to slide along the length direction, ensuring the smoothness and accuracy of the centering process. In this embodiment, there are multiple centering mechanisms 2, and two centering mechanisms 2 are moved to both ends of the arc-shaped I-beam 4 to achieve precise adjustment of the position of the arc-shaped I-beam 4, ensuring its position accuracy during processing or installation.

[0030] The centering mechanism 2 includes a movable base 21, a centering plate assembly 22 and a support member 23. The movable base 21 serves as the basic supporting component of the centering mechanism 2 and is used to carry the centering plate assembly 22 and the support member 23. The centering plate assembly 22 is in direct contact with the arc-shaped I-beam and its position is adjusted to achieve precise centering of the arc-shaped I-beam. The centering plate assembly 22 is assembled on the movable base 21 through the support member 23, and the support member 23 provides stable support for the centering plate assembly 22.

[0031] Furthermore, a number of reinforcement members 231 are installed between the lower end of the support member 23 and the movable base 21. The reinforcement members 231 can disperse and bear part of the load, thereby reducing the individual stress conditions of the support member 23 and the movable base 21, improving the bearing capacity of the entire structure, reducing shaking or deviation caused by vibration, impact or load changes, and improving the stability of the equipment.

[0032] The driving assembly 3 is mounted on the movable base 21 and is used to drive the centering mechanism 2 to move on the displacement platform 1. The driving assembly 3 provides power for the displacement platform 1 and the centering mechanism 2. The driving assembly 3 includes a motor 31 and a driving gear 32. The motor 31 is mounted on the upper end surface of the movable base 21 and serves as the power source of the entire driving system. It converts electrical energy into mechanical energy to provide power for the movement of the centering mechanism 2. An output structure 311 is provided at the bottom end of the motor 31. The output structure 311 passes through the movable base 21 and is connected to the driving gear 32. The output structure 311 is used to transmit the rotational motion of the motor 31 to the driving gear 32 to ensure the continuity and stability of power transmission. A guide rack 12 meshing with the driving gear 32 is installed between the two slide rails 11. The driving gear 32 converts the rotational motion of the motor 31 into linear motion through the meshing of the driving gear 32 with the guide rack 1, thereby driving the centering mechanism 2 to move on the displacement platform 1. This ensures that the movable base 21 can move smoothly along the direction of the slide rail 11.

[0033] The lower end surface of the mobile base 21 is equipped with a slider 211, which has a groove 2111 formed on the slider 211 to engage with the slide rail 11. The groove 2111 on the slider 211 enables the mobile base 21 to move smoothly on the displacement platform 1. The shape and size of the groove 2111 should precisely match the cross-sectional shape of the slide rail 11 to ensure a tight fit and smooth sliding. In this embodiment, multiple sliders 211 are provided, symmetrically assembled at positions on the lower end surface of the mobile base 21 corresponding to the slide rail 11.

[0034] In this embodiment, the centering plate assembly 22 includes a first centering plate 221, a second centering plate 222 and a connecting fixing member 223. The first centering plate 221 and the second centering plate 222 are arranged perpendicular to each other to form a clamping angle, and the arc I-beam is adjusted from two vertical directions at the same time, thereby improving the accuracy and stability of the centering; the first centering plate 221 and the second centering plate 222 are assembled on the support member 23 through the connecting fixing member 223, ensuring the rigidity and stability of the centering plate assembly 22, and facilitating maintenance and disassembly when adjusting or replacing the first centering plate 221 and the second centering plate 222.

[0035] The connecting fixture 223 is assembled at the upper end of the support member 23. This T-shaped fixture 223 is connected to the first and second centering plates 221, 222, respectively, via adjustable bolts 224. The adjustable bolts 224 adjust the position of the first and second centering plates 221, 222 on the connecting fixture 223 to accommodate curved I-beams of varying sizes and shapes. Furthermore, when the centering plate assembly 2 requires maintenance, replacement, or adjustment, the first and second centering plates 221, 222 can be easily removed by simply loosening the adjustable bolts 224, simplifying maintenance and improving work efficiency.

[0036] A mechanical centering device for curved I-beams also includes a position sensor mounted on a mobile base 21 for monitoring the position of the centering mechanism 2. The position sensor continuously monitors changes in the centering mechanism 2 and provides real-time feedback to the control system. This allows the control system to promptly understand the current state of the centering mechanism and make appropriate adjustments. By monitoring this real-time position information, the control system can precisely control the movement and positioning of the centering mechanism. This helps reduce errors caused by positional deviation and improves the centering and machining accuracy of the equipment.

[0037] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. A mechanical centering device for an arc-shaped I-beam, mounted at both ends of the arc-shaped I-beam (4); characterized in that: The invention comprises a displacement platform (1), a centering mechanism (2) and a driving assembly (3), wherein the centering mechanism (2) is assembled on the displacement platform (1) and slides along the length direction of the displacement platform (1); the centering mechanism (2) comprises a movable base (21), a centering plate assembly (22) and a support member (23), and the centering plate assembly (22) is assembled on the movable base (21) via the support member (23); and the driving assembly (3) is assembled on the movable base (21) and is used for driving the centering mechanism (2) to move on the displacement platform (1).

2. The mechanical centering device for an arc-shaped I-beam according to claim 1, characterized in that: The driving assembly (3) includes a motor (31) and a driving gear (32); the motor (31) is mounted on the upper end surface of the movable base (21); an output structure (311) is provided at the bottom end of the motor (31); the output structure (311) passes through the movable base (21) and is connected to the driving gear (32).

3. The mechanical centering device for an arc-shaped I-beam according to claim 1, characterized in that: Two slide rails (11) are arranged in parallel on the displacement platform (1).

4. The mechanical centering device for an arc-shaped I-beam according to claim 3, characterized in that: A guide rack (12) meshing with the driving gear (32) is installed between the two slide rails (11).

5. The mechanical centering device for curved I-beams according to claim 3, characterized in that: The lower end surface of the movable base (21) is equipped with a sliding block (211), and the sliding block (2111) is provided with a sliding groove (2111) engaged with the sliding rail (11).

6. The mechanical centering device for curved I-beams according to claim 1, characterized in that: The centering plate assembly (22) comprises a first centering plate (221), a second centering plate (222), and a connecting fixture (223); the first centering plate (221) and the second centering plate (222) are assembled on the support member (23) via the connecting fixture (223).

7. The mechanical centering device for curved I-beams according to claim 6, characterized in that: The connecting fixing member (223) is assembled on the upper end of the supporting member (23) and is respectively connected to the first centering plate (221) and the second centering plate (222) via adjustable bolts (224).

8. The mechanical centering device for curved I-beams according to claim 6, characterized in that: The first pair of centering plates (221) and the second pair of centering plates (222) are arranged perpendicular to each other.

9. The mechanical centering device for curved I-beams according to claim 1, characterized in that: A plurality of reinforcement members (231) are assembled between the lower end of the support member (23) and the movable base (21).

10. The mechanical centering device for curved I-beams according to claim 1, characterized in that: It also includes a position sensor, which is mounted on the mobile base (21) and is used to monitor the position information of the centering mechanism (2).

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