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Combined template mechanism for mold spraying

A combined formwork technology, which is applied in the shaft lining, tunnel lining, underground chamber, etc., can solve the problems of reducing the rebound rate of concrete, concrete leakage, and aggravating concrete leakage, so as to increase the amount of concrete spraying, improve efficiency, The effect of increasing the scope of application

Pending Publication Date: 2019-02-22
SICHUAN LANHAI ENG EQUIP MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the practice of spraying or pouring the initial support of the tunnel, the applicant found that the rebound rate of the concrete and the use of concrete quick-setting agents can be effectively reduced by using formwork. There will inevitably be unevenness on the surface, and there will be gaps to varying degrees between the supporting surface of the erected steel arch and the excavation surface, so that the sprayed concrete will leak from the gap during the mold spraying process using the formwork At the same time, when concrete is injected into the mold cavity of the support mold, due to the gravity of the concrete itself and the impact force of the concrete spray, the problem of concrete leakage from the support mold cavity is caused or even aggravated

Method used

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  • Combined template mechanism for mold spraying

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Experimental program
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Effect test

Embodiment 1

[0034] The combined template mechanism for mold spraying includes a template group, which is formed by connecting more than two single templates in a horizontal and / or vertical direction; the whole formed after the template group is unfolded Type formwork, which can cooperate with the excavated rock surface to form at least one mold cavity; the formwork group is connected to the frame / carrier, and an opening and closing control mechanism is provided between the single formwork of the formwork group.

[0035] Further, the formwork group is composed of more than two single formworks that can be folded / folded in the lateral direction, and adjacent single formworks are hinged to each other and connected by an opening and closing control mechanism, and the opening and closing control mechanism The opening and closing between adjacent single templates can be adjusted. The opening and closing control mechanism is set as a lateral oil cylinder 6, and the cylinder body and the piston r...

Embodiment 2

[0039]The formwork group is composed of more than two single formworks, which can be folded / turned in the transverse direction, and the adjacent single formworks are hinged to each other and connected by an opening and closing control mechanism. Opening and closing between adjacent single templates. Side form mechanism 3 is provided at the transverse edge of the single formwork at the two ends of the formwork group, and the side form mechanism 3 includes a side formwork assembly, and the side formwork assembly can move in a direction perpendicular to the connected single formwork. It stretches and sticks to the excavation surface of the tunnel, so that the template group, the excavation rock surface and the side formwork mechanism can cooperate with each other to form a mold cavity.

[0040] The side formwork assembly is composed of several side formwork units 31 arranged in the vertical direction, and each side formwork unit 31 is respectively connected with a telescopic mech...

Embodiment 3

[0044] Combined formwork mechanism for concrete mold spraying, the formwork group includes main formwork 1, auxiliary formwork 2, side formwork assembly 3, formwork support 4, pitch cylinder 5, side cylinder 6 and hinge seat 7, the main formwork 1 Hinged on the formwork support 4, the lateral two sides of the main formwork 1 are respectively hinged to the secondary formwork 2. The lateral oil cylinder 6 is set on the middle formwork 1 as an opening and closing control mechanism, and is respectively connected to and controls the opening and closing of the two auxiliary formworks 2; in this way, the integral formwork group formed by the three formworks cooperates with the excavated rock face to form a 1 one or more mold cavities.

[0045] That is to say, the formwork group is composed of three single formworks, which are foldable / foldable and connected in the transverse direction, and are respectively the main formwork 1 in the middle and the secondary formwork 2 located on both...

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Abstract

The invention discloses a combined template mechanism for mold spraying. The combined template mechanism comprises a template group which is formed by connecting more than two single templates in thetransverse direction and / or the vertical direction in a foldable / turnover manner. An integrated template formed after the template group is unfolded can be matched with an excavated rock surface to form at least one mold cavity. The template group is connected to a machine frame or a carrier, and unfolding-folding control mechanisms are arranged between the single templates of the template group. The overall area of the mold cavity enclosed by the template group and a steel arch on the excavated rock surface is increased, and the amount of concrete sprayed after single movement of the template group is increased. Meanwhile, the problem of concrete leakage caused by cracks between steel arch and rock surface and between the template group and the steel arch is effectively avoided. Through a newly designed side mold mechanism, a mold cavity is formed directly among a template mechanism, the side mold mechanism and the rock surface, and the efficiency of mold spraying pouring is further improved.

Description

technical field [0001] The invention belongs to the technical field of engineering construction, in particular to a combined template mechanism for mold spraying. Background technique [0002] Among the existing tunnel engineering machinery, the concrete sprayer is a relatively common construction machinery. The working principle of the concrete spraying machine is to use compressed air to transport the pre-mixed concrete mixture to the nozzle of the spraying machine through the pipeline, and form a bundle after being mixed with accelerator. On the sprayed surface, the quick-setting agent makes the concrete set and harden quickly, thus forming a concrete support layer. Shotcrete technology has been widely used in various engineering fields due to its simple process. [0003] In order to ensure that the concrete support layer can meet the strength requirements within a certain period of time, it is necessary to add a large amount of concrete quick-setting agent to the concr...

Claims

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Application Information

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IPC IPC(8): E21D11/10
CPCE21D11/102
Inventor 蓝传雯
Owner SICHUAN LANHAI ENG EQUIP MFG CO LTD
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