A concrete segment demolding mechanism and finishing system

Abstract

This utility model relates to the field of concrete segment demolding technology, and discloses a concrete segment demolding mechanism and finishing system, including a base and a mold body disposed on the base. The mold body includes a first shaping plate with a central arc-shaped protrusion and a second shaping plate movably installed below the first shaping plate. A fixing column is fixedly installed at the lower end of the first shaping plate, and the lower end of the fixing column is fixedly installed on the base. The second shaping plate includes a bottom plate and two side plates fixedly installed on the bottom plate. When the upper end of the bottom plate is in contact with the lower end of the first shaping plate, the two side plates and the upper part of the first shaping plate form an arc-shaped receiving cavity for making concrete segments. Two hydraulic cylinders are fixedly installed between the second shaping plate and the base. The purpose is to provide a concrete segment demolding mechanism that can ensure the safety of demolding work and improve demolding efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of concrete segment demolding technology, specifically relating to a concrete segment demolding mechanism and a finishing system. Background Technology

[0002] Currently, my country's subway construction has entered a stage of rapid development, with subway projects in major cities being put on the agenda. Most domestic subways choose the shield tunneling method for construction. Concrete segments are the main assembly components of shield tunneling. When making concrete segments, concrete needs to be poured into molds, and then the concrete in the molds is smoothed by a finishing machine. Through mechanical vibration and compaction, the concrete surface achieves a flat and smooth effect. After the concrete has solidified, it is removed from the mold to form a concrete segment.

[0003] Due to the structural characteristics and technical requirements of tunnel segments, during production, the segments are positioned with their inner curved surface facing downwards within the mold. Demolding typically employs either vacuum suction cups or hydraulic clamps. Vacuum suction cup demolding requires high flatness and smoothness of the outer curved surface of the segment, but it is not always secure and can easily detach during the process, leading to accidents and lower safety. While hydraulic clamps provide secure clamping, the inherent structural characteristics of the hydraulic system result in slow strokes and low efficiency. Therefore, we propose a concrete tunnel segment demolding mechanism and surface finishing system to address these issues. Utility Model Content

[0004] The purpose of this invention is to propose a concrete segment demolding mechanism and finishing system that can ensure the safety of demolding and improve demolding efficiency.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0006] A concrete segment demolding mechanism includes a base and a mold body disposed on the base. The mold body includes a first shaping plate with a central arc-shaped protrusion and a second shaping plate movably installed below the first shaping plate. A fixing column is fixedly installed at the lower end of the first shaping plate, and the lower end of the fixing column is fixedly installed on the base. The second shaping plate includes a bottom plate and two side plates fixedly installed on the bottom plate. When the upper end of the bottom plate is in contact with the lower end of the first shaping plate, the two side plates and the upper part of the first shaping plate form an arc-shaped receiving cavity for making concrete segments. Two hydraulic cylinders are fixedly installed between the second shaping plate and the base.

[0007] Furthermore, the lower end of the base plate is fixedly equipped with multiple limiting sleeves, and the base is fixedly equipped with multiple limiting rods that are adapted to the limiting sleeves. The base plate has multiple insertion holes that are adapted to the limiting rods. This structural design, with the limiting sleeves and limiting rods working together, provides a limiting effect on the base plate, allowing the second shaping plate to remain in a vertical position.

[0008] Further specifying, a first rack is fixedly installed at the lower end of the base plate, an extension rod is fixedly installed at the lower end of the first rack, a fixed rod is fixedly installed on the base, a limiting seat is fixedly installed on the fixed rod, a push rod is movably inserted into the limiting seat, a connecting rod is fixedly installed at the other end of the push rod, a second rack is fixedly installed at the lower end of the connecting rod, and a mounting seat is fixedly installed on the base. The mounting seat has a sliding groove adapted to the first rack, extension rod, and second rack, and a mounting groove is formed inside the mounting seat, which communicates with the sliding groove. A first gear and a second gear, respectively meshing with the first rack and the second rack, are rotatably installed in the mounting groove. A connecting column is fixedly installed between the first gear and the second gear. With this structural design, when the base plate moves downward and the side plate detaches from the concrete segment, the base plate continues to move downward. The first rack drives the first gear to rotate, causing the second gear fixed to it to drive the second rack to move laterally. This allows the push rod to push the concrete segment to move, causing it to detach from the first shaping plate.

[0009] Furthermore, a contact plate is fixedly installed at one end of the push rod near the side plate, and the contact plate is coated with elastic rubber. This structural design, where the contact plate replaces the end of the push rod in contact with the concrete segment, prevents damage to the side of the concrete segment.

[0010] Furthermore, both the first and second racks are fixedly mounted with limiting protrusions, and the mounting base is provided with dovetail grooves that are adapted to the limiting protrusions. This structural design, with the dovetail grooves working in conjunction with the limiting protrusions, ensures that the first and second racks do not disengage from the sliding grooves of the mounting base during movement.

[0011] Furthermore, the base has a movable plate with multiple casters at its lower end on its rear side. Multiple telescopic rods are fixedly mounted on the movable plate, and a support plate is fixedly mounted on the upper end of each telescopic rod. The upper end of the support plate is arc-shaped, and both ends are equipped with limiting blocks. This structural design allows the support plate to support the concrete segments detached from the first shaping plate, and the telescopic rods can work in conjunction with the support plate to move the concrete segments up and down, facilitating the placement of the concrete segments.

[0012] A finishing system includes a vibration module, a controller, a smoothing mechanism, a cleaning device, a robotic arm, and a demolding mechanism. The robotic arm is connected to the smoothing mechanism and controls the smoothing mechanism to move above the demolding mechanism so that it contacts the concrete surface. The controller is electrically connected to the vibration module, the smoothing mechanism, the cleaning device, the robotic arm, and the demolding mechanism. The vibration module and the cleaning device are mounted on the smoothing mechanism to generate vibration to achieve the finishing effect and to remove concrete from the side edges of the mold after finishing. After the concrete pipe segment has solidified, the demolding mechanism delivers the formed concrete pipe segment to complete the demolding.

[0013] The utility model adopting the above technical solution has the following advantages:

[0014] This invention uses a first shaping plate and a second shaping plate to shape concrete pipe segments. Two hydraulic cylinders can drive the second shaping plate to move downwards to detach from the first shaping plate, exposing the shaped concrete pipe segments. At this point, pushing the concrete pipe segments laterally can push them away from the surface of the first shaping plate to easily complete the demolding process, ensuring the safety of the demolding process and improving the demolding efficiency. Attached Figure Description

[0015] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0016] Figure 1 This is a schematic diagram of the structure of a concrete segment demolding mechanism according to the present invention;

[0017] Figure 2 This is a schematic diagram of the hydraulic cylinder in the retracted state of a concrete segment demolding mechanism according to this utility model;

[0018] Figure 3 This is a schematic diagram of the second shaping plate part in a concrete segment demolding mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the mounting base portion in a concrete segment demolding mechanism according to this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the first rack, second rack, first gear, and second gear in a concrete segment demolding mechanism of this utility model.

[0021] Figure 6 This is a schematic diagram of the second rack portion in a concrete segment demolding mechanism of this utility model;

[0022] Figure 7 This is a schematic diagram of the support plate part in a concrete segment demolding mechanism of this utility model.

[0023] The symbols for the main components are explained below:

[0024] 1. Base;

[0025] 2. Mold body; 21. First shaping plate;

[0026] 22. Second shaping plate; 221. Base plate; 222. Side plate; 223. First toothed rack;

[0027] 3. Fixed column; 4. Hydraulic cylinder;

[0028] 5. Limiting sleeve; 51. Limiting rod;

[0029] 6. Fixed rod; 61. Limiting seat; 62. Push rod; 63. Connecting rod; 64. Second rack; 65. Contact plate;

[0030] 7. Mounting base; 71. First gear; 72. Second gear;

[0031] 8. Movable plate; 81. Telescopic rod; 82. Support plate; 83. Limiting block. Detailed Implementation

[0032] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. Furthermore, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0033] like Figures 1 to 7 As shown, the present invention discloses a concrete segment demolding mechanism, comprising a base 1 and a mold body 2 disposed on the base 1. The mold body 2 includes a first shaping plate 21 with an arc-shaped protrusion at its center and a second shaping plate 22 movably installed below the first shaping plate 21. A fixing column 3 is fixedly installed at the lower end of the first shaping plate 21, and the lower end of the fixing column 3 is fixedly installed on the base 1. The second shaping plate 22 includes a bottom plate 221 and two side plates 222 fixedly installed on the bottom plate 221. When the upper end of the bottom plate 221 is in contact with the lower end of the first shaping plate 21, the two side plates 222 and the upper part of the first shaping plate 21 enclose an arc-shaped receiving cavity for making concrete segments. Two hydraulic cylinders 4 are fixedly installed between the second shaping plate 22 and the base 1.

[0034] Multiple limiting sleeves 5 are fixedly installed at the lower end of the base plate 221. Multiple limiting rods 51 that are compatible with the limiting sleeves 5 are fixedly installed on the base 1. Multiple insertion holes that are compatible with the limiting rods 51 are opened on the base plate 221. The limiting sleeves 5, in conjunction with the limiting rods 51, can keep the base plate 221 moving in the vertical direction, and can also protect the hydraulic cylinder 4 when the base plate 221 is subjected to lateral force.

[0035] A first rack 223 is fixedly installed at the lower end of the base plate 221, and an extension rod is fixedly installed at the lower end of the first rack 223. A fixing rod 6 is fixedly installed on the base 1, and a limit seat 61 is fixedly installed on the fixing rod 6. A push rod 62 is movably inserted into the limit seat 61. A contact plate 65 is fixedly installed at one end of the push rod 62 near the side plate 222. The contact plate 65 is coated with elastic rubber. A connecting rod 63 is fixedly installed at the other end of the push rod 62. A second rack 64 is fixedly installed at the lower end of the connecting rod 63. A mounting seat 7 is fixedly installed on the base 1. The mounting seat 7 has a groove that matches the first rack 223, the extension rod, and the second rack 64. An installation groove is provided, which is connected to a sliding groove. A first gear 71 and a second gear 72, which mesh with the first rack 223 and the second rack 64 respectively, are rotatably installed in the installation groove. A connecting column is fixedly installed between the first gear 71 and the second gear 72. Limiting protrusions are fixedly installed on both the first rack 223 and the second rack 64. The mounting base 7 is provided with a dovetail groove that matches the limiting protrusion. The limiting protrusion slides in the dovetail groove, which can restrict the first rack 223 and the second rack 64 in the sliding groove, so as to avoid the sliding groove opening from obstructing the teeth of the first rack 223 and the second rack 64 and affecting their movement.

[0036] The base 1 has a movable plate 8 with multiple casters at the bottom. Multiple telescopic rods 81 are fixedly installed on the movable plate 8. A support plate 82 is fixedly installed on the upper end of the multiple telescopic rods 81. The upper end of the support plate 82 is arc-shaped and has limit blocks 83 at both ends. When the concrete pipe segment is pushed away from the first shaping plate 21 by the push rod 62, the support plate 82 can support the concrete pipe segment. After the concrete pipe segment is completely separated from the first shaping plate 21, the telescopic rods 81 retract, which can lower the height of the support plate 82 and the concrete pipe segment to facilitate the movement of the concrete pipe segment.

[0037] A finishing system includes a vibration module, a controller, a smoothing mechanism, a cleaning device, a robotic arm, and a demolding mechanism. The robotic arm is connected to the smoothing mechanism to control its movement. The controller is electrically connected to the vibration module, the smoothing mechanism, the cleaning device, the robotic arm, and the demolding mechanism. The vibration module and the cleaning device are mounted on the smoothing mechanism to generate vibrations, achieving the finishing effect and removing concrete from the side edges of the mold after finishing. During operation, the robotic arm can move the smoothing mechanism above the mold body 2, bringing its lower end into contact with the concrete surface. The vibration module compacts the concrete, and the robotic arm, under the control of the controller, moves along the upper end of the mold to smooth the concrete, making the concrete surface flat and smooth. The cleaning device removes concrete from the side edges of the mold body 2 to ensure that the finishing process is not affected, guaranteeing the strength, impermeability, and appearance quality of the concrete segments after solidification. After the concrete segments solidify, the demolding mechanism removes the concrete segments from the mold body, improving the safety of concrete segment production.

[0038] The method of using this utility model is as follows:

[0039] When in use, the hydraulic cylinder 4 works to push the second shaping plate 22 upward until the upper end of the bottom plate 221 touches the lower end of the first shaping plate 21. At this time, concrete is poured into the arc-shaped receiving cavity formed by the first shaping plate 21 and the second shaping plate 22. After smoothing, it is left to stand so that the concrete pipe segment can solidify and take shape.

[0040] After the concrete segment solidifies, the hydraulic cylinder 4 works again, driving the base plate 221 and side plate 222 to move downwards. The extension rod at the lower end of the first rack 223 extends into the groove of the mounting seat 7. When the side plate 222 is offset from the side of the concrete segment, so that the concrete segment is completely exposed, the first rack 223 moves into the groove and meshes with the first gear 71. At this time, the hydraulic cylinder 4 drives the second shaping plate 22 to continue to move downwards. The first rack 223 drives the first gear 71 to rotate, and the second gear 72 rotates accordingly, which will drive the second rack 64 to move laterally in the groove. The second rack 64 drives the push rod 62 through the connecting rod 63 to get close to the side of the concrete segment under the limiting action of the limiting seat 61. The contact plate 65 at the end of the push rod 62 generates a lateral pushing force on the concrete segment, pushing it away from the first shaping plate 21, completing the demolding work and improving the safety of the demolding work.

[0041] When the concrete segments are pushed away by the push rod 62 and the contact plate 65, the support plate 82 will replace the first shaping plate to support the 21 pairs of concrete segments. With the cooperation of the telescopic rod 81 and the movable plate 8, it is convenient to move and transport the concrete segments, which improves the efficiency of demolding.

[0042] The above provides a detailed description of a concrete segment demolding mechanism provided by this utility model. The specific embodiments are described only to aid in understanding the method and core concept of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A concrete segment stripping mechanism comprising a base (1) and a mould body (2) arranged on the base (1), characterised in that: The mold body (2) comprises a first forming plate (21) in the shape of an arc-shaped convexity and a second forming plate (22) movably mounted below the first forming plate (21), a fixed column (3) is fixedly mounted at the lower end of the first forming plate (21), the lower end of the fixed column (3) is fixedly mounted on the base (1), the second forming plate (22) comprises a bottom plate (221) and two side plates (222) fixedly mounted on the bottom plate (221), when the upper end of the bottom plate (221) is attached to the lower end of the first forming plate (21), the two side plates (222) and the first forming plate (21) above form an arc-shaped accommodating cavity for making concrete segments, two hydraulic cylinders (4) are fixedly mounted between the second forming plate (22) and the base (1).

2. The concrete segment stripping mechanism according to claim 1, characterized in that: A plurality of limiting sleeves (5) are fixedly mounted at the lower end of the bottom plate (221), a plurality of limiting rods (51) matched with the limiting sleeves (5) are fixedly mounted on the base (1), a plurality of insertion holes matched with the limiting rods (51) are formed in the bottom plate (221).

3. The concrete segment stripping mechanism of claim 1, wherein: A first rack (223) is fixedly mounted at the lower end of the bottom plate (221), an extension rod is fixedly mounted at the lower end of the first rack (223), a fixed rod (6) is fixedly mounted on the base (1), a limiting seat (61) is fixedly mounted on the fixed rod (6), a push rod (62) is movably inserted into the limiting seat (61), a connecting rod (63) is fixedly mounted at the other end of the push rod (62), a second rack (64) is fixedly mounted at the lower end of the connecting rod (63), a mounting seat (7) is fixedly mounted on the base (1), a sliding groove matched with the first rack (223), the extension rod and the second rack (64) is formed in the mounting seat (7), an installation groove is formed in the mounting seat (7) and communicates with the sliding groove, a first gear (71) and a second gear (72) engaged with the first rack (223) and the second rack (64) respectively are rotatably mounted in the installation groove, and a connecting column is fixedly mounted between the first gear (71) and the second gear (72).

4. The concrete segment stripping mechanism of claim 3, wherein: An abutting disc (65) is fixedly mounted at one end of the push rod (62) close to the side plate (222), and the abutting disc (65) is coated with elastic rubber.

5. The concrete segment stripping mechanism of claim 3, wherein: Limiting convex strips are fixedly mounted on the first rack (223) and the second rack (64), and dovetail grooves matched with the limiting convex strips are arranged on the mounting seat (7).

6. The concrete segment stripping mechanism of claim 1, wherein: A movable plate (8) provided with a plurality of universal wheels at the lower end is arranged at the rear side of the base (1), a plurality of telescopic rods (81) are fixedly mounted on the movable plate (8), a supporting plate (82) is fixedly mounted at the upper ends of the telescopic rods (81), the upper end of the supporting plate (82) is arc-shaped, and limiting stoppers (83) are arranged at both ends of the supporting plate (82).

7. A troweling system characterized in that, The finishing system includes a vibration module, a controller, a smoothing mechanism, a cleaning device, a robotic arm, and a demolding mechanism as described in any one of claims 1-6. The robotic arm is connected to the smoothing mechanism to control the smoothing mechanism to move above the demolding mechanism so that it contacts the concrete surface. The controller is electrically connected to the vibration module, the smoothing mechanism, the cleaning device, the robotic arm, and the demolding mechanism. The vibration module and the cleaning device are mounted on the smoothing mechanism to make the smoothing mechanism vibrate to achieve the finishing effect and to remove the concrete from the side edge of the mold after finishing. After the concrete pipe segment has solidified, the demolding mechanism delivers the formed concrete pipe segment to complete the demolding.

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