Forming mold device for producing tunnel grouting pipe

Abstract

A forming mold device for producing a tunnel grouting pipe is characterized in that a core mold is inserted into an outer mold, a positioning pin is inserted into a positioning hole of the outer mold, a locking buckle wraps the outer mold from the outer side, a grout outlet of a connecting pipe is connected with the bottom of the outer mold through the locking buckle, the outer mold is inserted into an outer mold storage rack (7), and the core mold is placed on the core mold storage rack in a suspended mode; according to the device, an open-edge circular outer die made of stainless steel is fixed through a C-shaped locking buckle which is tightened along with a screw to reinforce the outer die to form a detachable circular die, and the device can be repeatedly used, is good in non-stickiness and is easy to clean. The T-shaped core mold is fixed to the inner upper portion of the outer mold through a round steel plate welded to the upper portion in a plug pin mode, the functions of center positioning and overall length control are achieved, and accurate positioning and quick dismounting can be achieved. The T-shaped connecting pipe is a steel grouting pipe and can be provided with a plurality of grout outlets which can be independently controlled to be opened and closed, and the aim of simultaneously pouring a plurality of grouting pipes can be achieved.

Description

Technical Field

[0001] This utility model belongs to the field of railway tunnel secondary lining concrete grouting technology, specifically relating to a molding die device for producing tunnel grouting pipes. Background Technology

[0002] Voiding behind the secondary lining is a common occurrence during tunnel construction. To improve this quality defect, grouting is necessary to fill the voids behind the secondary lining concrete, ensuring the overall strength of the lining concrete and enhancing its waterproofing function. Achieving this grouting function requires grouting pipes. While steel pipes and cement pipes exist, cement-based RPC pipes are favored due to their strong adhesion and consistent material properties. Currently, most manufacturers use plastic molds for vibration-assisted placement or steel molds for forming, which suffers from low efficiency, poor overall integrity, numerous air bubbles, poor core formation, and high mold wear. New technical solutions are needed to address these issues. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a molding die device for producing tunnel grouting pipes.

[0004] The technical solution adopted in this utility model is:

[0005] A molding device for producing tunnel grouting pipes includes a core mold (1), characterized in that the core mold (1) is inserted into an outer mold (3), a positioning pin (2) is inserted into a positioning hole of the outer mold (3), a locking buckle (4) wraps around the outer mold (3) from the outside, the grout outlet of the connecting pipe (6) is connected to the bottom of the outer mold (3) through the locking buckle (4), the outer mold (3) is inserted into an outer mold storage rack (7), and the core mold (1) is suspended and placed in the core mold storage rack (8).

[0006] The core mold (1) is T-shaped, with a 15mm diameter cylinder and a 38mm round steel plate on the top, which is welded and fixed.

[0007] The outer mold (3) is made of stainless steel with a circular open edge, and two symmetrical positioning holes are provided on the upper part. The diameter of the holes is slightly larger than that of the positioning pin (2).

[0008] The locking buckle (4) is C-shaped and reinforces the outer mold (3) as the screw is tightened.

[0009] The connecting pipe (6) has a T-shaped structure, multiple slurry outlets, and a valve (5) is installed at each slurry outlet.

[0010] The beneficial effects of this utility model are:

[0011] This device uses a stainless steel open-edge circular outer mold, secured by C-shaped locking buckles that tighten with screws to form a reusable, non-stick, and easy-to-clean circular mold. A T-shaped core mold is fixed to the upper part of the outer mold via a welded circular steel plate pin, serving as a centering point and controlling the overall length, allowing for precise positioning and quick disassembly. The T-shaped connecting pipe is a steel grouting pipe with multiple individually controllable grout outlets, enabling simultaneous grouting of multiple pipes. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the utility model.

[0013] Figure 2 This is a schematic diagram of the utility model.

[0014] Figure 3 This is a schematic diagram of the utility model.

[0015] Figure 4 This is a schematic diagram of the utility model.

[0016] Among them, 1 is the core mold, 2 is the positioning pin, 3 is the outer mold, 4 is the locking buckle, 5 is the valve, 6 is the connecting pipe, 7 is the outer mold storage rack, and 8 is the core mold storage rack. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] like Figure 1-4 As shown, a molding device for producing tunnel grouting pipes is characterized by comprising a core mold 1 inserted into an outer mold 3, a positioning pin 2 inserted into a positioning hole of the outer mold 3, a locking buckle 4 covering the outer mold 3 from the outside, the grout outlet of the connecting pipe 6 being connected to the bottom of the outer mold 3 through the locking buckle 4, the outer mold 3 being inserted into an outer mold storage rack 7, and the core mold 1 being suspended and placed in the core mold storage rack 8.

[0019] The core mold 1 is T-shaped, with a 15mm diameter cylinder and a 38mm round steel plate on the top, which is welded and fixed.

[0020] The outer mold 3 is made of stainless steel with a circular open edge, and two symmetrical positioning holes are provided on the upper part. The diameter of the holes is slightly larger than that of the positioning pin 2.

[0021] The locking buckle 4 is C-shaped and reinforces the outer mold 3 as the screw is tightened.

[0022] The connecting pipe 6 has a T-shaped structure with multiple slurry outlets, and a valve 5 is installed at each slurry outlet.

[0023] The working principle of this utility model is as follows:

[0024] This device uses a stainless steel open-edge circular outer mold, secured by C-shaped locking buckles that tighten with screws to form a reusable, non-stick, and easy-to-clean circular mold. A T-shaped core mold is fixed to the upper part of the outer mold via a welded circular steel plate pin, serving as a centering point and controlling the overall length, allowing for precise positioning and quick disassembly. The T-shaped connecting pipe is a steel grouting pipe with multiple individually controllable grout outlets, enabling simultaneous grouting of multiple pipes.

Claims

1. A molding device for producing tunnel grouting pipes, comprising a core mold (1), characterized in that, The core mold (1) is inserted into the outer mold (3), the positioning pin (2) is inserted into the positioning hole of the outer mold (3), the locking buckle (4) wraps around the outer mold (3) from the outside, the slurry outlet of the connecting pipe (6) is connected to the bottom of the outer mold (3) through the locking buckle (4), the outer mold (3) is inserted into the outer mold storage rack (7), and the core mold (1) is suspended in the core mold storage rack (8).

2. The forming mold device for producing tunnel grouting pipes according to claim 1, characterized in that, The core mold (1) is T-shaped, with a 15mm diameter cylinder and a 38mm round steel plate on the top, which is welded and fixed.

3. The forming mold device for producing tunnel grouting pipes according to claim 1, characterized in that, The outer mold (3) is made of stainless steel with a circular open edge, and two symmetrical positioning holes are provided on the upper part. The diameter of the holes is slightly larger than that of the positioning pin (2).

4. The forming mold device for producing tunnel grouting pipes according to claim 1, characterized in that, The locking buckle (4) is C-shaped and reinforces the outer mold (3) as the screw is tightened.

5. The forming mold device for producing tunnel grouting pipes according to claim 1, characterized in that, The connecting pipe (6) has a T-shaped structure, multiple slurry outlets, and a valve (5) is provided at each slurry outlet.

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