Pipe jacking well receiving end tunnel portal water stopping device
By installing a support spring and setting up a raised structure on the water stop device at the receiving end of the pipe well, the problem that the existing device cannot stop water at the receiving end is solved, and effectively resists the mud pressure during the reception of the pipe header, ensuring that The water stop effect and avoids damage to the support spring.
Patent Information
- Application Number
- CN202421012629.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-10
AI Technical Summary
The existing water stop device for the pipe well door cannot effectively block mud overflow at the receiving end because its movement direction is the same as the rushing direction and the mud flow direction, and it cannot play a normal water stop function.
A water stop device for receiving end hole door of the top tube well including rubber pendant, press plate and steel flip plate is designed. By installing a support spring on the steel flip plate, and two protrusions are provided in the part under the rubber pendant, under the steel flip plate Along the support spring is located between the projections, the lower part of the steel flip plate is connected to the other end, and the steel collar of the hole door is connected to ensure that the steel flip plate can provide sufficient squeeze pressure when the top tube is received to resist the flow of mud.
The device can effectively resist the pressure of the mud behind the pipe wall when the pipe is received, prevent overflow, and ensure the water stop effect through high-strength spring support capacity, while avoiding overloading of the support spring.
Smart Images
Figure CN222253998U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipe jacking engineering construction, in particular to a water stopping device for a tunnel door at a receiving end of a pipe jacking well. Background Art
[0002] In pipe jacking construction, water stopping at the tunnel gate is a very important construction safety guarantee measure, which directly affects the construction safety during the entire pipe jacking construction period. At present, the combined water stopping device of "rubber curtain and steel flap" is the most commonly used form of tunnel gate water stopping device in pipe jacking construction. The rubber curtain and steel flap are fixed to the steel sleeve ring of the tunnel gate by bolts, with the rubber curtain on the inside and the steel flap on the outside. The existing water stopping device technology is widely used for water stopping at the tunnel gate at the starting end of the pipe jacking well. The principle is that during the jacking process of the pipe jacking machine, the movement direction of the water stopping device is consistent with the jacking direction of the pipe jacking, but opposite to the mud flow direction behind the pipe wall, so it can prevent the mud from overflowing and has a good water stopping effect. However, when it is used for the receiving end tunnel gate, the combined water stopping device of "rubber curtain and steel flap" has no external force constraint. When the pipe jacking machine receives it, the movement direction of the water stopping device is the same as the jacking direction and the mud flow direction outside the pipe wall, and it cannot play a normal water stopping role. Utility Model Content
[0003] The utility model aims to solve the problem that the existing water-stopping device for the tunnel door of a jacking pipe well cannot play a water-stopping role when used at the receiving end. The technical solution adopted is: a water-stopping device for the tunnel door of a jacking pipe well receiving end, comprising: a rubber curtain, a pressure plate and a steel flap, the rubber curtain and the pressure plate are fixed to the tunnel door steel ring by bolts, the steel flap is fixed to the pressure plate, and a support spring is connected to the outer side of the lower part of the steel flap, and the support spring is compressed when the steel flap is folded in the direction away from the rubber curtain.
[0004] A further improvement is that one end of the support spring is connected to the lower part of the steel flap, and the other end is connected to the steel sleeve ring of the tunnel gate.
[0005] A further improvement is that when the steel flap and the rubber curtain are both in a vertical state, the lower edge of the steel flap is higher than the lower edge of the rubber curtain.
[0006] A further improvement is that two protrusions are provided on the lower part of the rubber cord, and the protrusions extend along the width direction of the rubber cord.
[0007] A further improvement is that the lower edge of the steel flap is located at a corresponding position between the two protrusions of the rubber curtain.
[0008] The beneficial effects of the utility model are:
[0009] The utility model provides a water-stopping device for the receiving end of the tunnel gate of the jacking well, which fixes the movable range of the water-stopping device (or can move slightly, but can meet the requirement of resisting slurry) by installing a supporting spring on the steel flap, that is, the jacking force of the jacking pipe and the mud pressure behind the pipe wall are opposite to the supporting force of the steel flap, and at the same time, the high-strength spring supporting capacity can meet the maximum jacking force and mud pressure behind the pipe wall when the jacking pipe is received, thereby ensuring that the water-stopping device can block the mud behind the pipe wall when the jacking machine receives it, and no overflow occurs, and can also ensure that the force-bearing performance of the supporting spring is fully exerted without being damaged. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0011] Figure 1 It is a schematic diagram of the structure of the water-stopping device for the receiving end of the jacking well of the utility model;
[0012] Figure 2 It is a structural schematic diagram of the utility model of the water-stopping device for the receiving end tunnel of the jacking pipe well in the use state. DETAILED DESCRIPTION
[0013] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.
[0014] In the description of the utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply 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 a limitation on the utility model.
[0015] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0016] In the utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.
[0017] like Figure 1 and Figure 2 As shown, the utility model provides a water-stopping device for a receiving end of a tunnel gate of a jacking pipe shaft, comprising: a rubber curtain 1, a pressure plate 2 and a steel flap 3, the upper part of the rubber curtain 1 and the pressure plate 2 are fixedly mounted on a steel sleeve ring 100 of the tunnel gate by bolts 4, the steel flap 3 comprises a fixed plate 31 and a flap 32, the two parts are connected by the cooperation of a pin shaft and a pin sleeve, and the flap 32 can be folded around the pin shaft, the fixed plate 31 is fixedly mounted on the pressure plate 2, and the connection method is preferably a welding fixed connection, and a support spring 5 is connected to the outer side of the lower part or the lower end of the steel flap 3, the support spring 5 is compressed when the steel flap 3 is folded in the direction away from the rubber curtain 1, providing a downward extrusion force for the steel flap 3.
[0018] The utility model provides a water-stopping device for the receiving end of the tunnel gate of the jacking well, which fixes the movable range of the water-stopping device (or can move slightly, but can meet the requirement of resisting slurry) by installing a supporting spring on the steel flap, that is, the jacking force of the jacking pipe and the mud pressure behind the pipe wall are opposite to the supporting force of the steel flap, and at the same time, the high-strength spring supporting capacity can meet the maximum jacking force and mud pressure behind the pipe wall when the jacking pipe is received, thereby ensuring that the water-stopping device can block the mud behind the pipe wall when the jacking machine receives it, and no overflow occurs, and can also ensure that the force-bearing performance of the supporting spring is fully exerted without being damaged.
[0019] A further improvement is that one end of the support spring 5 is connected to the lower part or lower end of the steel flap 3 by a fixing bolt, and the other end is connected to the tunnel gate steel collar 100 by a fixing bolt.
[0020] In order to improve the water-stopping ability of the device, the technical solution is further improved as follows: when the steel flap 3 and the rubber curtain 1 are both in a vertical state, the lower edge of the steel flap 3 is higher than the lower edge of the rubber curtain 1. In this way, when the device is folded upward due to the top force of the top pipe 200, the lower edge of the steel flap 3 just abuts against the lower end or the upper part of the lower end of the rubber curtain 1. Under the action of the elastic force of the support spring 5, the lower edge of the steel flap 3 squeezes the lower end of the rubber curtain 1, so that the lower end of the rubber curtain 1 is squeezed and tightly attached to the outer wall of the top pipe, thereby achieving the function of water-stopping and mud-blocking.
[0021] In order to further improve the water-stopping and mud-blocking capabilities of the device, the further improvement of the technical solution is that two mutually parallel protrusions 11 are provided at the lower part or near the lower end of the rubber cord 1, and the protrusions 11 are protruded in the direction away from the steel flap 3, and the protrusions 11 extend along the width direction of the rubber cord 1. When the rubber cord 1 is subjected to the extrusion force from the steel flap 3, the protrusions 11 are pressed against the outer wall of the top pipe, thereby improving the water-stopping capability of the device.
[0022] Further improvement is that when the steel flap 3 and the rubber cord 1 are both in a vertical state, the lower edge of the steel flap 3 is located at the corresponding position between the two protrusions 11 of the rubber cord 1. Therefore, when the device is folded upward due to the top force of the top pipe, the lower edge of the steel flap 3 just abuts against the position of the back of the rubber cord 1 between the two protrusions 11 of the rubber cord 1, and the rubber cord 1 and the position are concavely deformed, and then the downward pressure is transmitted to the two protrusions, so that the two protrusions are tightly abutted against the outer wall of the top pipe, forming two barriers to stop water and block mud, greatly improving the water-stopping and mud-blocking capabilities of the device.
[0023] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A water-stopping device for a receiving end tunnel of a jacking well, characterized in that: include: A rubber curtain, a pressure plate and a steel flap, wherein the rubber curtain and the pressure plate are fixed to a steel sleeve ring of a tunnel gate by bolts, the steel flap is fixed to the pressure plate, and a support spring is connected to the outer side of the lower part of the steel flap, and the support spring is compressed when the steel flap is folded in a direction away from the rubber curtain.
2. The water-stopping device for the receiving end of the jacking well according to claim 1 is characterized in that: One end of the support spring is connected to the lower part of the steel flap, and the other end is connected to the steel sleeve ring of the tunnel gate.
3. The water-stopping device for the receiving end of the jacking well according to claim 1 is characterized in that: When the steel flap and the rubber curtain are both in a vertical state, the lower edge of the steel flap is higher than the lower edge of the rubber curtain.
4. The water-stopping device for the receiving end of the jacking well according to claim 1, characterized in that: The lower part of the rubber cord is provided with two protrusions, and the protrusions extend along the width direction of the rubber cord.
5. The water-stopping device for the receiving end of the jacking well according to claim 4 is characterized in that: The lower edge of the steel flap is located at a corresponding position between the two protrusions of the rubber curtain.