Flexible jacking iron assembly for pipe jacking construction

Abstract

The utility model discloses a flexible jacking iron assembly for pipe jacking construction, which is characterized by comprising a first jacking ring of which the outer side surface is propped against a concrete pipe joint, a second jacking ring of which the outer side surface is propped against a pushing device, and a flexible rubber ring, a first limiting groove and a second limiting groove which are matched with each other are formed in the inner side faces, close to each other, of the first top ring and the second top ring correspondingly. The left side and the right side of the flexible rubber ring are clamped between the first limiting groove and the second limiting groove. The left side face of the flexible rubber ring is bonded with the inner side face of the first top ring through a first adhesive layer, and the right side face of the flexible rubber ring is bonded with the inner side face of the second top ring through a second adhesive layer. The flexible rubber ring is evenly provided with a plurality of deformation through holes which transversely penetrate through the flexible rubber ring in the circumferential direction. The utility model solves the problem that the existing concrete pipe joint is easy to crack and break due to uneven stress in the jacking process by using the jacking iron.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel engineering, and in particular relates to a flexible jacking iron component used for jacking pipe construction. Background Art

[0002] As my country's urban development becomes more and more saturated, the demand for underground space development continues to increase, and the use of pipe jacking for the construction of various water conservancy and power pipelines is becoming more and more common. During pipe jacking construction, the pipe section is slowly pushed forward by the jacking device acting on the top iron. Since the pipe section and the top iron are in a rigid connection state, it is easy to cause uneven force on the pipe section, resulting in cracks, collapse or even scrapping of the contact surface between the concrete pipe section and the top iron, affecting the quality and benefits of the project. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a flexible jacking iron component for pipe jacking construction, so as to solve the problem that the existing concrete pipe section is prone to cracking and collapse due to uneven force during the jacking process using the jacking iron.

[0004] The utility model is achieved through the following technical solutions.

[0005] A flexible top iron assembly for pipe jacking construction, characterized in that it comprises a first top ring whose outer side abuts against a concrete pipe section, a second top ring whose outer side abuts against a jacking device, and a flexible rubber ring; the inner sides of the first top ring and the second top ring close to each other are respectively provided with a first limiting groove and a second limiting groove that cooperate with each other; the left and right sides of the flexible rubber ring are respectively clamped between the first limiting groove and the second limiting groove; the left side of the flexible rubber ring is bonded to the inner side of the first top ring through a first adhesive layer, and the right side of the flexible rubber ring is bonded to the inner side of the second top ring through a second adhesive layer; the flexible rubber ring is evenly provided with a plurality of deformation through holes that penetrate horizontally along the circumferential direction.

[0006] Preferably, the first adhesive layer and the second adhesive layer are formed by coating with building structural adhesive.

[0007] Preferably, the first top ring and the second top ring are hollowed out inside.

[0008] Preferably, a plurality of reinforcing ribs are evenly arranged along the circumferential direction at the inner hollow positions of the first top ring and the second top ring.

[0009] Preferably, the sum of the groove depth of the first limiting groove and the groove depth of the second limiting groove along the pipe segment jacking direction is 1 / 2 to 2 / 3 of the width of the flexible rubber ring.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: 1) When the utility model is used to push the pipe joint, the compression of the flexible rubber ring can be converted into a uniform linear force and transmitted to the pipe joint to ensure the effective advancement of the pipe joint, which can effectively solve the pipe joint quality problems caused by the side cracking and collapse of the pipe joint due to unbalanced force in the traditional method. 2) The utility model can provide dense and dispersed deformation space for the flexible rubber ring along the circumferential direction by arranging the deformation through holes that penetrate horizontally on the flexible rubber ring, so as to solve the problem that the flexible rubber ring is easy to crack and deform when repeatedly subjected to severe compression force, thereby improving the service life of the flexible rubber ring. 3) The utility model can not only realize the convenient, stable and efficient connection between the first top ring, the second top ring and the flexible rubber ring through the clamping cooperation of the first limiting groove and the second limiting groove, and the bonding of the first adhesive layer and the second adhesive layer, but also does not need to occupy too much operating space, which can be conveniently implemented in the pipe jacking construction with limited operating space. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 for Figure 1 Sectional view at AA in the middle;

[0013] Figure 3 It is a three-dimensional structural schematic diagram of the utility model when installed;

[0014] Figure 4 This is a diagram of the use state of the utility model;

[0015] The meanings of the symbols in the above figure are: first top ring 1, second top ring 2, flexible rubber ring 3, deformation through hole 301, pushing device 4, concrete pipe section 5, first limiting groove 6, second limiting groove 7, first adhesive layer 8, second adhesive layer 9, reinforcing rib 10. DETAILED DESCRIPTION

[0016] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc., are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Example

[0018] A flexible jacking iron assembly for pipe jacking construction, see Figures 1 to 3 It comprises a first top ring 1 whose outer side abuts against a concrete pipe segment 5, a second top ring 2 whose outer side abuts against a jacking device 4, and a flexible rubber ring 3; the inner sides of the first top ring 1 and the second top ring 2 close to each other are respectively provided with a first limiting groove 6 and a second limiting groove 7 that match each other; the left and right sides of the flexible rubber ring 3 are respectively clamped between the first limiting groove 6 and the second limiting groove 7; the left side of the flexible rubber ring 3 is bonded to the inner side of the first top ring 1 through a first adhesive layer 8, and the right side of the flexible rubber ring 3 is bonded to the inner side of the second top ring 2 through a second adhesive layer 9; the flexible rubber ring 3 is uniformly provided with a plurality of deformation through holes 301 that penetrate horizontally along the circumferential direction;

[0019] Based on the above structure, the working principle or use method of the utility model is as follows:

[0020] 1. First, hoist and lower the first top ring 1 into the working pit, and then make the outer side of the first top ring 1 abut against the concrete pipe segment 5; then hoist and lower the second top ring 2 into the working pit, so that the outer side of the second top ring 2 abuts against the jacking device 4 and the inner side is close to the first top ring 1, and a certain space is left between the first top ring 1 and the second top ring 2, so as to facilitate the subsequent coating of the first adhesive layer 8 and the second adhesive layer 9 and the installation of the flexible rubber ring 3;

[0021] 2. The first adhesive layer 8 and the second adhesive layer 9 are respectively coated on the inner side of the first top ring 1 and the inner side of the second top ring 2. After the first adhesive layer 8 and the second adhesive layer 9 are formed, the flexible rubber ring 3 is installed in the first limiting groove 6 or the second limiting groove 7. Then, the second top ring 2 is pushed by the pushing device 4, so that the flexible rubber ring 3 is clamped between the first limiting groove 6 and the second limiting groove 7, and is adhered to the first top ring 1 and the second top ring 2 by the first adhesive layer 8 and the second adhesive layer 9 respectively. The installation of the flexible top iron assembly of the utility model is completed through the above steps;

[0022] In the above process, only the first limiting groove and the second limiting groove are snapped together, and the first adhesive layer and the second adhesive layer are bonded, without the need for welding, bolting, etc. to perform connection operations. This is not only convenient for implementation in a working well with limited operating space, but also can achieve convenient, stable and efficient connection between the first top ring, the second top ring and the flexible rubber ring. When the utility model is used to push the pipe joint, the compression of the flexible rubber ring can be converted into a uniform linear force transmitted to the pipe joint to ensure the effective advancement of the pipe joint, which can effectively solve the pipe joint quality problems caused by side cracking and collapse of the pipe joint due to unbalanced force in traditional methods.

[0023] Furthermore, in a preferred embodiment, the first adhesive layer 8 and the second adhesive layer 9 are formed by coating with building structural adhesive.

[0024] In order to reduce the weight of the first top ring 1 and the second top ring 2 to facilitate their installation and transportation, further, in a preferred embodiment, the first top ring 1 and the second top ring 2 are hollowed out.

[0025] In order to ensure the strength of the first top ring 1 and the second top ring 2, further, in a preferred embodiment, a plurality of reinforcing ribs 10 are evenly arranged along the circumferential direction at the internal hollow positions of the first top ring 1 and the second top ring 2; preferably, the reinforcing ribs 10 are evenly arranged along the circumferential direction on the inner ring and the outer ring of the internal hollow positions of the first top ring 1 and the second top ring 2.

[0026] In order to ensure that the flexible rubber ring 3 has a certain compression space while clamping the flexible rubber ring 3, further, in a preferred embodiment, the sum of the groove depth of the first limiting groove 6 and the groove depth of the second limiting groove 7 along the pipe segment jacking direction is 1 / 2 to 2 / 3 of the width of the flexible rubber ring 3.

Claims

1. A flexible jacking iron assembly for pipe jacking construction, characterized in that: The invention comprises a first top ring (1) whose outer side abuts against a concrete pipe section (5), a second top ring (2) whose outer side abuts against a jacking device (4), and a flexible rubber ring (3); the inner side surfaces of the first top ring (1) and the second top ring (2) which are close to each other are respectively provided with a first limiting groove (6) and a second limiting groove (7) which cooperate with each other; the left and right sides of the flexible rubber ring (3) are respectively clamped between the first limiting groove (6) and the second limiting groove (7); the left side surface of the flexible rubber ring (3) is bonded to the inner side surface of the first top ring (1) through a first adhesive layer (8), and the right side surface of the flexible rubber ring (3) is bonded to the inner side surface of the second top ring (2) through a second adhesive layer (9); and the flexible rubber ring (3) is evenly provided with a plurality of deformation through holes (301) which penetrate in the transverse direction along the circumferential direction.

2. A flexible jacking iron assembly for pipe jacking construction as claimed in claim 1, characterized in that: The first adhesive layer (8) and the second adhesive layer (9) are formed by coating building structural adhesive.

3. A flexible jacking iron assembly for pipe jacking construction as claimed in claim 1, characterized in that: The first top ring (1) and the second top ring (2) are hollowed out inside.

4. A flexible jacking iron assembly for pipe jacking construction as claimed in claim 3, characterized in that: A plurality of reinforcing ribs (10) are evenly arranged in the circumferential direction at the internal hollowed-out positions of the first top ring (1) and the second top ring (2).

5. A flexible jacking iron assembly for pipe jacking construction as described in any one of claims 1 to 4, characterized in that: The sum of the groove depth of the first limiting groove (6) and the groove depth of the second limiting groove (7) along the pipe segment jacking direction is 1 / 2 to 2 / 3 of the width of the flexible rubber ring (3).

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