A preparation device for a curved hollow cylindrical concrete component

Abstract

The present invention relates to the technical field of concrete components, and particularly to a device for preparing a curved hollow cylindrical concrete component, which includes a curved outer cylinder, a curved inner cylinder, a support device and a cap. The support device includes a rotating shaft, and a number of support rods are fixed on the rotating shaft. Each support rod includes an outer rod and an inner rod. The outer rod is fixed to the inner arc body, and the inner rod is fixed to the rotating shaft. When the rotating shaft drives the inner rod to rotate in the first direction, the outer rod and the inner rod are locked with each other. At this time, the support rod is at its maximum length. When the rotating shaft drives the inner rod to rotate in the second direction, the outer rod and the inner rod are unlocked and can approach each other; the present invention uses the curved outer cylinder and the curved inner cylinder formed by splicing to prepare the concrete component, and uses the slidably arranged inner rod and outer rod. When the two are far away from each other until the support rod is at its maximum length, the two are locked to support the inner arc body. When the two are unlocked and approach each other, the support rod contracts to drive the inner arc body to fold and thus separate from the component, which is convenient for demoulding and can be reused.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete components, and particularly to a device for preparing a curved hollow cylindrical concrete component. Background Art

[0002] Currently, in the field of tunnel similarity model tests, there is a situation where it is difficult to prepare non-traditional tunnel model components, such as the preparation of curved tunnel model components. Different from conventional straight tunnels, curved tunnels have a certain turning radius in the tunnel radial direction, which endows them with a certain structural flexibility and strong adaptability to complex terrain and topography. The application cases in urban subways and some mountainous, underwater and other areas are gradually increasing. However, due to the structural characteristics of curved tunnels themselves, the model preparation process is often very complex, and the injection molds used are often disposable consumables, with huge investment and difficult to reuse, which brings certain troubles to the development of curved tunnel structure model test research. At the same time, after the tunnel model is cured and formed, there are also problems such as difficult demoulding and serious peeling and chipping, resulting in certain damage to the tunnel structure during the demoulding process, and significantly reducing the finished product quality of the tunnel model.

[0003] Therefore, it is necessary to design a device for preparing a curved hollow cylindrical concrete component that can be recycled, which can not only reduce the processing and manufacturing costs of injection molds or equipment, ensure the airtightness during the component preparation process, but also solve the current situation of difficult demoulding of curved models, and effectively improve the preparation quality and pouring efficiency of components. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: in order to overcome the problems of difficult demoulding, serious peeling and chipping, and difficult reuse of the injection molds for curved tunnels in the prior art, a device for preparing a curved hollow cylindrical concrete component is provided.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions: a device for preparing a curved hollow cylindrical concrete component, comprising:

[0006] A curved outer cylinder, comprising a plurality of outer arc bodies connected end to end, and adjacent ones are detachably connected;

[0007] A curved inner cylinder, comprising a plurality of inner arc bodies connected end to end;

[0008] The supporting device includes a rotating shaft, and a plurality of supporting rods are fixed on the rotating shaft. The plurality of supporting rods correspond to a plurality of inner arc bodies one by one, and each supporting rod is used to support the corresponding inner arc body. Each supporting rod includes an outer rod and an inner rod that are slidably connected. The outer rod is fixed to the corresponding inner arc body, and the inner rod is fixed to the rotating shaft. When the rotating shaft drives the inner rod to rotate in the first direction, the outer rod and the inner rod are locked to each other, and at this time, the supporting rod is at its maximum length. When the rotating shaft drives the inner rod to rotate in the second direction, the outer rod and the inner rod are unlocked and can approach each other;

[0009] The cap is stuck at the bottoms of the curved outer cylinder and the curved inner cylinder and is detachably connected to both of them.

[0010] During use, slide the outer rod and the inner rod until the supporting rod is at its maximum length, and rotate the rotating shaft in the first direction to lock it, so that a plurality of inner arc bodies are connected end to end to form a curved inner cylinder, and a plurality of outer arc bodies are connected end to end to form a curved outer cylinder. Lubricating oil is applied and a film is laid on the outer peripheral wall of the curved inner cylinder and the inner peripheral wall of the curved outer cylinder. In addition, lock the bottoms of the curved outer cylinder and the curved inner cylinder through the cap, and then pour concrete inside the cylinder formed by the curved outer cylinder and the curved inner cylinder. After the component is cured, first remove the cap, then disassemble the plurality of outer arc bodies, rotate the rotating shaft to drive the inner rod to rotate in the second direction, the inner rod and the outer rod are unlocked and can approach each other, so that the supporting rod loses its supporting effect, and the plurality of inner arc bodies can be folded to disengage from the component, and finally take out the inner arc bodies to complete demolding.

[0011] The above technical solution uses the spliced curved outer cylinder and curved inner cylinder to prepare concrete components, and uses the slidably arranged inner rod and outer rod. When the two are far away from each other until the supporting rod is at its maximum length, the two are locked to support the inner arc body. When the two are unlocked and approach each other, the supporting rod contracts to drive the dry inner arc body to fold and thus disengage from the component. Demolding is convenient, and after one process is completed and cured, it can be reused, which can effectively reduce the waste of formwork materials.

[0012] Further, the outer rod is provided with an L-shaped hole. The hole includes a radial section and a circumferential section, and the circumferential section is located inside the radial section. The inner rod is provided with a buckle that matches the hole, and the buckle is slidably connected inside the hole. When the buckle is located in the circumferential section, the supporting rod is at its maximum length. When the buckle is located in the radial section, the outer rod and the inner rod can slide relative to each other; when the rotating shaft is rotated to drive the inner rod to rotate in the first direction, the buckle enters the circumferential section from the radial section to lock the inner rod and the outer rod, and the supporting rod is at its maximum length to support the inner arc body; when the rotating shaft is rotated to drive the inner rod to rotate in the second direction, the buckle enters the radial section from the circumferential section to unlock the inner rod and the outer rod, and the outer rod can move towards the inner rod, and the two approach each other to make the supporting rod contract.

[0013] Furthermore, the radial segment lengths of the holes on each outer rod are different. The different radial segments result in different distances of adjacent outer rods moving towards the inner rod among the unlocked support rods, which can avoid interference when adjacent two inner arc bodies disengage from the component.

[0014] Furthermore, the circumferential segment lengths of the holes on each outer rod are different. The different circumferential segments result in different unlocking times of adjacent two support rods when the rotating shaft rotates, that is, when the outer rod and the inner rod of one support rod can slide relative to each other, the other support rod is still in the locked state, avoiding interference caused by several outer rods driving several inner arc bodies to move together.

[0015] Furthermore, an auxiliary mechanism for assisting the support device is also provided on the rotating shaft. When the support device is in the support state, the auxiliary mechanism can provide auxiliary support to prevent the component from squeezing the curved inner cylinder and causing the support device to fail, resulting in pouring failure.

[0016] Furthermore, the auxiliary mechanism includes several slide rails arranged along the circumferential direction of the rotating shaft. Several lifting brackets are slidably installed on each slide rail. Each lifting bracket includes two rod bodies arranged in a cross shape. A notch is formed on one of the two rod bodies, and a convex column matching the notch is provided on the other rod body. The convex column is slidably connected inside the notch, and a magnet is provided on the convex column. A magnetic field generator is installed on the rotating shaft, and the magnetic field generator is used to control the direction of the magnetic field to achieve attraction or repulsion with the magnet. When the support device is in the support state, the magnetic field generator is started to generate a magnetic field repulsive to the magnet, and the magnet is driven by the repulsive force to drive the convex column to move away from the rotating shaft, causing the lifting bracket to lift to support the inner arc body. When demoulding is required, the magnetic field generator is started to generate a magnetic field attractive to the magnet, and the magnet is driven by the suction force to drive the convex column to move towards the rotating shaft, causing the lifting bracket to contract and disengage from the inner arc body.

[0017] Furthermore, arc-shaped cuts are provided at both ends of each inner arc body along its circumference. The arc-shaped cuts incline towards the second direction from the outer peripheral wall to the inner peripheral wall, which is used to make the inner arc body easier to loosen and disengage from the workpiece when the rotating shaft drives the inner rod to rotate along the second direction and the outer rod and the inner rod are unlocked.

[0018] Furthermore, a concave groove and a convex block are respectively provided at both ends of each outer arc body along its circumference. The convex blocks on adjacent two outer arc bodies are inserted into the concave groove to realize the clamping of the two, and gaskets are provided at both ends of each outer arc body along its circumference. Bolts pass through the gaskets on adjacent two outer arc bodies to realize the locking of the two.

[0019] Furthermore, several U-shaped steel pins are installed at intervals on the tops of the curved outer cylinder and the curved inner cylinder. The several steel pins are distributed circumferentially to lock the curved outer cylinder and the curved inner cylinder to prevent their positions from shifting.

[0020] Furthermore, the cap includes an outer ring and an inner ring. The outer ring is stuck outside the curved outer cylinder, and the inner ring is stuck outside the curved inner cylinder to prevent concrete from overflowing during pouring.

[0021] The beneficial effects of the present invention are as follows: The present invention uses the spliced curved outer cylinder and curved inner cylinder to prepare concrete components, and uses the slidably arranged inner rod and outer rod. When the two are moved away from each other until the support rod reaches the maximum length, they are locked to support the inner arc body. When the two are unlocked and moved closer to each other, the support rod contracts to drive the inner arc body to fold and thus separate from the component, which is convenient for demoulding and can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the drawings and embodiments.

[0023] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0024] Figure 2 is a structural schematic diagram of the outer arc body;

[0025] Figure 3 is a structural schematic diagram of the curved inner cylinder and the support device;

[0026] Figure 4 is a structural schematic diagram of the support rod;

[0027] Figure 5 is a structural schematic diagram of the auxiliary mechanism;

[0028] Figure 6 is a structural schematic diagram of the lifting bracket;

[0029] In the figure:

[0030] 1. Curved outer cylinder; 11. Outer arc body; 111. Concave groove; 112. Convex block; 113. Gasket;

[0031] 2. Curved inner cylinder; 21. Inner arc body; 211. Arc-shaped incision;

[0032] 3. Support device; 31. Turntable; 32. Rotating shaft; 33. Support rod; 331. Outer rod; 332. Inner rod; 333. Hole; 3331. Radial section; 3332. Circumferential section; 334. Buckle;

[0033] 4. Cap; 41. Outer ring; 42. Inner ring;

[0034] 5. Auxiliary mechanism; 51. Slide rail; 52. Lifting bracket; 521. Rod body; 522. Notch; 523. Convex column; 53. Magnetic field generator;

[0035] 6. Steel needle. Detailed Embodiments

[0036] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only schematically showing the basic structure of the present invention, so they only show the components related to the present invention. Directions and references (such as up, down, left, right, etc.) can only be used to assist in the description of the features in the drawings. Therefore, the following detailed embodiments are not adopted in a restrictive sense, and the scope of the claimed subject matter is only defined by the appended claims and their equivalents.

[0037] Embodiment 1:

[0038] As Figure 1-6 shown, the present invention is a device for preparing a curved hollow cylindrical concrete member, including:

[0039] A curved outer cylinder 1, including a number of outer arc bodies 11 connected end to end, and adjacent ones are detachably connected. The number of outer arc bodies 11 is not limited. In this embodiment, it is four. At both ends of each outer arc body 11 along its circumference, there are respectively a concave groove 111 and a convex block 112. The convex block 112 on the adjacent two outer arc bodies 11 is inserted into the concave groove 111 to realize the clamping of the two. And at both ends of each outer arc body 11 along its circumference, there is a gasket 113. Bolts pass through the gaskets 113 on the adjacent two outer arc bodies 11 to realize the locking of the two;

[0040] A curved inner cylinder 2, including a number of inner arc bodies 21 connected end to end, and its number is not limited. In this embodiment, the number is six;

[0041] A support device 3, including a rotating shaft 32. At the end of the rotating shaft 32, there is a turntable 31. A number of support rods 33 are fixed on the rotating shaft 32. The number of support rods 33 corresponds to the number of inner arc bodies 21 one by one, and each support rod 33 is used to support the corresponding inner arc body 21. Each support rod 33 includes an outer rod 331 and an inner rod 332 that are slidably connected. The outer rod 331 is fixed to the corresponding inner arc body 21, and the inner rod 332 is fixed to the rotating shaft 32. When the rotating shaft 32 drives the inner rod 332 to rotate in the first direction (clockwise direction in this embodiment), the outer rod 331 and the inner rod 332 are locked to each other. At this time, the support rod 33 is at its maximum length and in a supporting state. When the rotating shaft 32 drives the inner rod 332 to rotate in the second direction (counterclockwise direction in this embodiment), the outer rod 331 and the inner rod 332 are unlocked and can approach each other. The number of support rods 33 is divided into two groups, and the two groups of support rods are respectively supported at the head and the tail, and each group has six support rods 33.

[0042] The outer rod 331 is provided with an L-shaped hole 333. The hole 333 includes a radial section 3331 and a circumferential section 3332, and the circumferential section 3332 is located inside the radial section 3331. The inner rod 332 is provided with a buckle 334 that matches the hole 333. The buckle 334 is slidably connected inside the hole 333. When the buckle 334 is located in the circumferential section 3332, the support rod 33 is at its maximum length. When the buckle 334 is located in the radial section 3331, the outer rod 331 and the inner rod 332 can slide relative to each other. When the rotating shaft 32 drives the inner rod 332 to rotate in the first direction, the buckle 334 enters the circumferential section 3332 from the radial section 3331 to lock the inner rod 332 and the outer rod 331, and the support rod 33 is at its maximum length to support the inner arc body 21. When the rotating shaft 32 drives the inner rod 332 to rotate in the second direction, the buckle 334 enters the radial section 3331 from the circumferential section 3332 to unlock the inner rod 332 and the outer rod 331, and the outer rod 331 can move towards the inner rod 332, and the two can approach each other to make the support rod 33 contract.

[0043] The lengths of the radial sections 3331 of the holes 333 on each outer rod 331 are different. The different radial sections 3331 result in different distances for adjacent two outer rods 331 to move towards the inner rod 332 among the unlocked support rods 33, which can avoid interference when adjacent two inner arc bodies 21 are separated from the component.

[0044] The lengths of the circumferential sections 3332 of the holes 333 on each outer rod 331 are different. The different circumferential sections 3332 result in different unlocking times for adjacent two support rods 33 when the rotating shaft 32 rotates, that is, when the outer rod 331 and the inner rod 332 of one support rod 33 can slide relative to each other, the other support rod 33 is still in the locked state, avoiding interference when several outer rods 331 drive several inner arc bodies 21 to move together.

[0045] Both ends of each inner arc body 21 along its circumference are provided with arc-shaped cuts 211. The arc-shaped cuts 211 incline towards the second direction from the outer peripheral wall to the inner peripheral wall, which is used to make the inner arc body 21 easier to loosen and separate from the workpiece when the rotating shaft 32 drives the inner rod 332 to rotate in the second direction and the outer rod 331 and the inner rod 332 are unlocked.

[0046] The rotating shaft 32 is further provided with an auxiliary mechanism 5 for assisting the support device 3. When the support device 3 is in the support state, the auxiliary mechanism 5 can provide auxiliary support to prevent the component from squeezing the curved inner cylinder 2 and causing the support device 3 to fail, resulting in pouring failure.

[0047] The auxiliary mechanism 5 includes a plurality of slide rails 51 arranged circumferentially along the rotating shaft 32. A plurality of lifting brackets 52 are slidably mounted on each slide rail 51. Each lifting bracket 52 includes two rod bodies 521 arranged crosswise. A notch 522 is formed in one of the two rod bodies 521, and a convex column 523 matching the notch 522 is provided on the other rod body 521. The convex column 523 is slidably connected inside the notch 522, and a magnet is provided on the convex column 523. A magnetic field generator 53 is mounted on the rotating shaft 32. The magnetic field generator 53 is used to control the direction of the magnetic field to achieve attraction or repulsion with the magnet. When the support device 3 is in the support state, the magnetic field generator 53 is started to generate a magnetic field repulsive to the magnet. The magnet is driven by the repulsive force to drive the convex column 523 to move away from the rotating shaft 32, so that the lifting bracket 52 is lifted to support the inner arc body 21. When demolding is required, the magnetic field generator 53 is started to generate a magnetic field attractive to the magnet. The magnet is driven by the attractive force to drive the convex column 523 to move towards the rotating shaft 32, so that the lifting bracket 52 contracts to disengage from the inner arc body 21.

[0048] The cap 4 is clamped at the bottoms of the curved outer cylinder 1 and the curved inner cylinder 2 and is detachably connected to both of them. It includes an outer ring 41 and an inner ring 42. The outer ring 41 is clamped outside the curved outer cylinder 1, and the inner ring 42 is clamped outside the curved inner cylinder 2 to prevent the overflow of concrete during pouring.

[0049] A plurality of U-shaped steel pins 6 are installed at intervals at the tops of the curved outer cylinder 1 and the curved inner cylinder 2. The plurality of steel pins 6 are distributed circumferentially to lock the curved outer cylinder 1 and the curved inner cylinder 2 to prevent the dislocation of their positions.

[0050] Working principle:

[0051] In use, slide the outer rod 331 and the inner rod 332 to the maximum length with respect to the support rod 33, and rotate the rotating shaft 32 in the first direction so that the buckle 334 enters the circumferential section 3332 from the radial section 3331 to lock the inner rod 332 and the outer rod 331. Connect the heads and tails of a number of inner arc bodies 21 to form a curved inner cylinder 2, insert the convex blocks 112 on two adjacent outer arc bodies 11 into the concave grooves 111 and lock them with bolts. Connect the heads and tails of a number of outer arc bodies 11 to form a curved outer cylinder 1. Apply lubricating oil and lay a thin film on the outer peripheral wall of the curved inner cylinder 2 and the inner peripheral wall of the curved outer cylinder 1. In addition, lock the bottoms of the curved outer cylinder 1 and the curved inner cylinder 2 with the cap 4, and lock the tops of both with a number of U-shaped steel pins 6. Then pour concrete inside the cylinder formed by the curved outer cylinder 1 and the curved inner cylinder 2. After the component curing is completed, first remove the cap 4, then disassemble a number of outer arc bodies 11, rotate the rotating shaft 32 in the second direction to drive the inner rod 332 to rotate so that the buckle 334 enters the radial section 3331 from the circumferential section 3332, thereby unlocking the inner rod 332 and the outer rod 331. The inner rod 332 and the outer rod 331 can approach each other, causing the support rod 33 to lose its supporting effect. Fold a number of inner arc bodies 21 to separate them from the component, and finally take out the inner arc bodies 21 to complete demolding.

[0052] Based on the ideal embodiments of the present invention as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A preparation device for a curved hollow cylindrical concrete member, characterized in that: It includes: A curved outer cylinder (1), which includes a number of outer arc bodies (11) connected end to end; A curved inner cylinder (2), which includes a number of inner arc bodies (21) connected end to end; A support device (3), which includes a rotating shaft (32). A number of support rods (33) are fixed on the rotating shaft (32). The number of support rods (33) corresponds one by one to the number of inner arc bodies (21), and each support rod (33) is used to support the corresponding inner arc body (21). Each support rod (33) includes an outer rod (331) and an inner rod (332) connected by sliding. The outer rod (331) is fixed to the corresponding inner arc body (21), and the inner rod (332) is fixed to the rotating shaft (32). When the rotating shaft (32) drives the inner rod (332) to rotate in the first direction, the outer rod (331) and the inner rod (332) are locked to each other. At this time, the support rod (33) is at its maximum length. When the rotating shaft (32) drives the inner rod (332) to rotate in the second direction, the outer rod (331) and the inner rod (332) are unlocked and can approach each other; A cap (4), which is stuck at the bottom of the curved outer cylinder (1) and the curved inner cylinder (2); The outer rod (331) is provided with an L-shaped hole (333). The hole (333) includes a radial section (3331) and a circumferential section (3332), and the circumferential section (3332) is located inside the radial section (3331). The inner rod (332) is provided with a buckle (334) matching the hole (333). The buckle (334) is slidably connected inside the hole (333). When the buckle (334) is located in the circumferential section (3332), the support rod (33) is at its maximum length. When the buckle (334) is located in the radial section (3331), the outer rod (331) and the inner rod (332) can approach each other; An auxiliary mechanism (5) for assisting the support device (3) is further provided on the rotating shaft (32); The auxiliary mechanism (5) includes a number of slide rails (51) arranged along the circumference of the rotating shaft (32). A number of lifting brackets (52) are slidably installed on each slide rail (51). Each lifting bracket (52) includes two rod bodies (521) arranged in a cross shape. A notch (522) is opened on one of the two rod bodies (521), and a convex column (523) matching the notch (522) is provided on the other rod body (521). The convex column (523) is slidably connected inside the notch (522), and a magnet is provided on the convex column (523). A magnetic field generator (53) is installed on the rotating shaft (32), and the magnetic field generator (53) is used to control the direction of the magnetic field to achieve attraction or repulsion with the magnet.

2. A preparation device for a curved hollow cylindrical concrete member according to claim 1, characterized in that: The lengths of the radial sections (3331) of the holes (333) on each outer rod (331) are different.

3. A preparation device for a curved hollow cylindrical concrete member according to claim 1, characterized in that: The circumferential segment (3332) lengths of the openings (333) on each outer rod (331) are different.

4. A device for preparing a curved hollow cylindrical concrete member according to claim 1, characterized in that: Arc-shaped cuts (211) are provided at both ends of each inner arc body (21) along its circumference.

5. A device for preparing a curved hollow cylindrical concrete member according to claim 1, characterized in that: Concave grooves (111) and convex blocks (112) are respectively provided at both ends of each outer arc body (11) along its circumference. The convex blocks (112) on two adjacent outer arc bodies (11) are inserted into the concave grooves (111). And gaskets (113) are provided at both ends of each outer arc body (11) along its circumference. Bolts pass through the gaskets (113) on two adjacent outer arc bodies (11).

6. A device for preparing a curved hollow cylindrical concrete member according to claim 1, characterized in that: A number of U-shaped steel needles (6) are installed at intervals on the tops of the curved outer cylinder (1) and the curved inner cylinder (2).

7. A device for preparing a curved hollow cylindrical concrete member according to claim 1, characterized in that: The cap (4) includes an outer ring (41) and an inner ring (42). The outer ring (41) is stuck outside the curved outer cylinder (1), and the inner ring (42) is stuck outside the curved inner cylinder (2).

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