Pneumatic demolding construction device

Abstract

The utility model discloses a pneumatic demoulding construction device, which relates to the technical field of demoulding construction devices and comprises a bottom mould, a top mould, a left mould and a right mould. The top die is arranged above the bottom die, and the left side die and the right side die are arranged between the top die and the bottom die; a plurality of high-pressure air inlet holes are formed in the bottom mold, the left mold and the right mold, a high-pressure air pipe is arranged between every two high-pressure air inlet holes, and the high-pressure air pipes are connected with an air conveying pipe through a three-way valve. The high-pressure air pipe is connected with the air compressor, and during demolding, high-pressure air is used for balancing the internal and external pressure difference of the template so as to reduce demolding tension, so that smooth demolding of a large template is guaranteed. And in order to prevent the high-pressure air inlet from being blocked by the poured concrete, the hole opening is sealed by a rubber plug before the concrete is poured.

Description

Technical Field

[0001] The utility model relates to the technical field of demoulding construction devices, and in particular to a pneumatic demoulding construction device. Background Art

[0002] For the secondary lining of circular tunnels, needle beam trolley forms are generally used for concrete pouring. The full-circle needle beam trolley form is longitudinally segmented and circumferentially divided into a top form, left and right side forms, and a bottom form. Since the form blocks are relatively large, it is difficult to demould due to the internal and external air pressure difference during form removal, and often a large pulling force is required for demoulding, resulting in damage to the concrete surface and even deformation of the form, affecting the construction quality. Therefore, a form air pressure assisted demoulding method is designed to solve the problem of difficult demoulding. Content of the Utility Model

[0003] In order to solve the existing problem of difficult demoulding, the utility model provides a pneumatic demoulding construction device.

[0004] In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows:

[0005] A pneumatic demoulding construction device includes a bottom form, a top form, a left side form and a right side form; the top form is arranged above the bottom form, and the left side form and the right side form are both arranged between the top form and the bottom form; a plurality of high-pressure air inlet holes are opened on the bottom form, the left side form and the right side form, a high-pressure air pipe is arranged between every two high-pressure air inlet holes, and the high-pressure air pipe is connected with an air delivery pipe through a three-way valve; the bottom form, the top form, the left side form and the right side form are all composed of a plurality of form plates spliced together, and the number of form plates spliced for the bottom form, the top form, the left side form and the right side form is the same.

[0006] Based on the above technical scheme, further, at least two high-pressure air inlet holes are opened on each form plate, and the high-pressure air inlet holes on the same form plate are communicated through a high-pressure air pipe.

[0007] Based on the above technical scheme, further, the air inlet end of the high-pressure air pipe is connected to an external air compressor.

[0008] Based on the above technical scheme, further, a concrete feeding port is opened on each form plate of the bottom form, the top form, the left side form and the right side form.

[0009] Based on the above technical scheme, further, concrete vibrators are arranged on the bottom form, the top form, the left side form and the right side form.

[0010] Based on the above technical scheme, further, a grouting hole is arranged on the top form, and the diameter range of the grouting hole is 125 mm - 150 mm.

[0011] Based on the above technical solution, further, after the bottom mold, the top mold, the left mold, and the right mold are assembled, they form a cuboid structure.

[0012] Compared with the prior art, the beneficial effects of the present utility model are specifically reflected in:

[0013] The present utility model is connected to an air compressor through a high-pressure air pipe. During demolding, high-pressure gas is used to balance the pressure difference inside and outside the template to reduce the demolding force, ensuring the smooth demolding of the large template. And in order to prevent the casting concrete from blocking the air inlet holes, the orifices are sealed with rubber plugs before pouring the concrete. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the unfolded structure of the device of the present utility model;

[0015] Figure 2 is Figure 1 the enlarged structure schematic diagram of part A of

[0016] Reference numerals: 1, bottom mold; 2, top mold; 3, left mold; 4, right mold; 5, template; 6, high-pressure air inlet hole; 7, high-pressure air pipe; 8, air delivery pipe; 9, concrete inlet; 10, grouting hole; 11, concrete vibrator. Specific Embodiments

[0017] The following further elaborates and explains the present utility model in conjunction with the drawings and specific embodiments. The technical features of each embodiment in the present utility model can be combined correspondingly without conflict.

[0018] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model is given in conjunction with the drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below. The technical features of each embodiment of the present utility model can be combined correspondingly without conflict.

[0019] In the description of the present utility model, it should be understood that when an element is considered to be "connected" to another element, it can be directly connected to the other element or indirectly connected, i.e., there is an intermediate element. On the contrary, when an element is referred to as being "directly" connected to another element, there is no intermediate element.

[0020] Embodiment 1

[0021] Combined with Figure 1 and Figure 2As shown in the figure, in this embodiment, a pneumatic demoulding construction device is provided, which includes a bottom mould 1, a top mould 2, a left side mould 3 and a right side mould 4. Among them, the materials of the bottom mould 1, the top mould 2, the left side mould 3 and the right side mould 4 are all steel, and their sizes are determined by dividing them according to the diameter of the tunnel. Generally, the length is 12m, and it is divided into 8 rings along the length direction. Each ring is a template, and the length of each ring is 1.5m. Each ring is further divided into a top mould, a left side mould, a right side mould and a bottom mould according to the diameter of the tunnel; the bottom mould 1, the top mould 2, the left side mould 3 and the right side mould 4 can be connected by welding or other means, and this connection method is preferably a detachable connection. The specific connection method is a conventional means in the art, and will not be elaborated here; the top mould 2 is arranged above the bottom mould 1, and the left side mould 3 and the right side mould 4 are both arranged between the top mould 2 and the bottom mould 1; a number of high-pressure air inlet holes 6 are opened on the bottom mould 1, the left side mould 3 and the right side mould 4. A high-pressure air pipe 7 is arranged between every two high-pressure air inlet holes 6. The high-pressure air pipe 7 is connected to an air delivery pipe 8 through a three-way valve. Among them, the other end of the air delivery pipe 8 is connected to an external compression device, and compressed air is input through the compression device.

[0022] In some preferred embodiments, the bottom mould 1, the top mould 2, the left side mould 3 and the right side mould 4 are all composed of a number of templates 5 spliced together, and the number of templates 5 spliced for the bottom mould 1, the top mould 2, the left side mould 3 and the right side mould 4 is the same. The specific number of templates 5 can be set according to the actual situation, and no specific requirements are made here. In this embodiment, the bottom mould 1, the top mould 2, the left side mould 3 and the right side mould 4 are all composed of eight templates, that is, 8 rings. Among them, at least two high-pressure air inlet holes 6 are opened on each template 5, and the high-pressure air inlet holes 6 on the same template 5 are communicated through a high-pressure air pipe 7. The air inlet port of the high-pressure air pipe 7 is connected to an external air compressor. Among them, the high-pressure magnitude involved in this embodiment is not less than 3MPa.

[0023] In some preferred embodiments, a concrete feeding port 9 is opened on each template 5 of the bottom mould 1, the top mould 2, the left side mould 3 and the right side mould 4, and the concrete is pressed into the mould through this port by an externally arranged concrete pump pipe.

[0024] In some preferred embodiments, concrete vibrators 11 are provided on the bottom mould 1, the top mould 2, the left side mould 3 and the right side mould 4. Among them, the concrete vibrator 11 is an existing device. When pouring concrete components with a concrete mixer, since it is necessary to remove the air bubbles and compact the concrete to make it densely combined, eliminate the honeycombing and pockmarking phenomena of the concrete, etc., to improve its strength and ensure the quality of the concrete components, the concrete vibrator 11 is a mechanical tool for tamping concrete.

[0025] In some preferred embodiments, a grouting hole 10 is provided on the top mould 2, and the diameter range of the grouting hole 10 is 125mm - 150mm.

[0026] In some preferred embodiments, after the bottom mold 1, the top mold 2, the left mold 3 and the right mold 4 are assembled, they form a cuboid structure, and when unfolded, they form a rectangular structure.

[0027] The entire construction working principle of this device is as follows:

[0028] During demolding, start from the outermost ring. After demolding one ring, then demold the adjacent ring until all the last rings are demolded. The demolding sequence for each ring: the top mold is the rear sealing block. When demolding, use the support screw of the top mold to separate the top mold, then connect the left mold and the right mold to the high-pressure air pipe 7, and compress air through the high-pressure air pipe 7. While compressing air, use the support screw of the left mold or the right mold for demolding. Finally, connect the bottom mold 1 to the high-pressure air pipe 7, compress air through the high-pressure air pipe 7, and while compressing air, use the support screw of the bottom mold 1 for demolding.

[0029] The above is only the implementation mode of the present utility model, and its description is relatively specific and detailed, but it should not be understood as a limitation to the scope of the patent of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. A pneumatic demoulding construction device, characterized in that: It includes a bottom mold, a top mold, a left mold and a right mold; the top mold is arranged above the bottom mold, and the left mold and the right mold are arranged between the top mold and the bottom mold; There are several high-pressure air inlet holes on the bottom mold, left mold and right mold. A high-pressure air pipe is provided between every two high-pressure air inlet holes, and the high-pressure air pipe is connected to an air delivery pipe through a three-way valve; The bottom mold, the top mold, the left mold and the right mold are all formed by splicing a number of templates, and the number of templates spliced ​​by the bottom mold, the top mold, the left mold and the right mold is the same.

2. A pneumatic demoulding construction device according to claim 1, characterized in that: Each of the templates is provided with at least two high-pressure air inlet holes, and the high-pressure air inlet holes on the same template are connected through a high-pressure air pipe.

3. A pneumatic demoulding construction device according to claim 2, characterized in that: The air inlet port of the high-pressure air pipe is connected to an external air compressor.

4. A pneumatic demoulding construction device according to claim 1, characterized in that: Each of the bottom mold, the top mold, the left mold and the right mold is provided with a concrete inlet.

5. A pneumatic demoulding construction device according to claim 1, characterized in that: Concrete vibrators are provided on the bottom mold, the top mold, the left mold and the right mold.

6. A pneumatic demoulding construction device according to claim 1, characterized in that: The top mold is provided with grouting holes, and the diameter range of the grouting holes is 125mm-150mm.

7. A pneumatic demoulding construction device according to claim 1, characterized in that: The bottom mold, the top mold, the left mold and the right mold form a rectangular parallelepiped structure after being assembled.

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