Anti-deflection device and anti-deflection structure for intermediate jacking station of steel jacking pipe

Abstract

The utility model relates to a steel jacking pipe intermediate jacking station anti-deflection device and an anti-deflection structure, comprising a steel jacking pipe which is divided into a front jacking pipe and a rear jacking pipe, and further comprising a fixing plate, a stiffening plate, a connecting plate, a limiting rod and a limiting baffle; a fixing plate and a stiffening plate are symmetrically arranged on a front jacking pipe and a rear jacking pipe of the steel jacking pipe, the fixing plate and the stiffening plate are located on the same axis and are arranged at the same height, connecting plates are vertically connected to the upper portions of the fixing plate and the stiffening plate, and two parallel limiting baffles are connected to the connecting plate on one side to form a strip-shaped groove. A limiting rod is fixedly arranged on the connecting plate on the other side and inserted into the strip-shaped groove between the limiting baffles on the other side. Deflection of the steel jacking pipe intermediate jacking station is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water conservancy engineering, and in particular to a steel pipe jacking relay interval anti-deflection device and anti-deflection structure. BACKGROUND

[0002] With the development of the domestic water conservancy industry, in the underground excavation engineering, pipe jacking is widely used in the construction fields of urban water supply, regional water transfer, rainwater and sewage diversion, etc. due to its high efficiency, strong safety adaptability and other advantages. Especially with the progress and application of hard rock pipe jacking technology, in the hard rock stratum steel pipe jacking construction, the relay interval grading jacking needs to be used to overcome the pipe wall and soil layer friction resistance and the cutter head frontal resistance. However, in actual construction, due to the welding of the inner and outer tubes of the relay interval at the front and rear ends of the steel pipe, the relay interval is often affected by uneven jacking force, steel pipe rebound deformation, cutter head rotation, accumulated slag uplift, uneven high pressure water level difference, etc., causing the relay interval to deflect, and further causing a series of problems such as relay interval oil cylinder damage, sealing failure, and increased friction resistance. CONTENT OF THE UTILITY MODEL

[0003] To solve or partially solve the problems in the related art, the present application provides a steel pipe jacking relay interval anti-deflection device, which can prevent the steel pipe jacking relay interval from deflecting.

[0004] The present application discloses a steel pipe jacking relay interval anti-deflection device, which comprises a steel pipe jacking, the steel pipe jacking is divided into a front pipe jacking and a rear pipe jacking, and further comprises: a fixed plate, a stiffening plate, a connecting plate, a limiting rod, and a limiting baffle; the fixed plate and the stiffening plate are symmetrically arranged on the front pipe jacking and the rear pipe jacking of the steel pipe jacking, the fixed plate and the stiffening plate are located on the same axis and are arranged at the same height, the connecting plate is vertically connected and arranged above the fixed plate and the stiffening plate, two parallel limiting baffles are connected and arranged on one side of the connecting plate to form a strip-shaped groove, and the limiting rod is fixedly arranged on the other side of the connecting plate and inserted into the strip-shaped groove between the limiting baffles on the other side.

[0005] Optionally, the height of the fixed plate and the stiffening plate is higher than the height of the oil cylinder in the relay interval.

[0006] Optionally, the height of the limiting baffle is consistent with the thickness of the limiting rod.

[0007] Optionally, a gap not greater than 1mm is left between the side surface of the limiting rod and the limiting baffle.

[0008] Optionally, the limiting rod is a solid steel bar, and when the front pipe jacking and the rear pipe jacking are at the farthest ends away from each other, the length of the limiting rod still makes at least half of one end of the limiting rod located in the strip-shaped groove of the limiting baffle.

[0009] The present application also discloses a steel pipe jacking relay interval anti-deflection structure, which comprises the anti-deflection device of any one of the above.

[0010] Optionally, multiple anti-deflection devices are evenly distributed circumferentially.

[0011] Optionally, two adjacent anti-deflection devices are arranged to be reversed left and right.

[0012] The technical solution provided by this application may have the following beneficial effects:

[0013] This device uses a structure in which a limiting rod slides within a strip groove formed by a limiting baffle. This prevents axial deflection of the entire relay room without hindering the normal extension and contraction of the oil cylinder in the relay room. This avoids various problems caused by axial deflection of the relay room. Furthermore, this device has a simple and practical structure, high reliability, and is easy to install.

[0014] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0016] Figure 1 It is a structural diagram shown in an embodiment of the present application;

[0017] Figure 2 is a side view of an embodiment of the present application;

[0018] Figure 3 This is a side view of an embodiment of the present application when used in a relay room;

[0019] Figure 4 This is a partially expanded view of the relay room oil cylinder in a non-working state when used in the relay room, as shown in an embodiment of the present application;

[0020] Figure 5 This is a partially expanded view of a steel jacking pipe in a relay room shown in an embodiment of the present application, with the relay room oil cylinder in a working state;

[0021] Reference numerals:

[0022] 1. Fixed plate; 2. Stiffening plate; 3. Connecting plate; 4. Limit rod; 5. Limit baffle; 6. Steel jacking pipe. DETAILED DESCRIPTION

[0023] Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While embodiments of the present application are shown in the drawings, it is understood that the present application can be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and fully convey the scope of the present application to those skilled in the art.

[0024] It should be understood that, although the terms "first", "second", "third", etc. can be used in this application to describe various information, these information should not be limited by these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present application. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0025] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0026] Unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] To solve the above problems, the embodiments of the present application provide a steel pipe jacking relay station anti-deflection device, which will be described in detail below in combination with the drawings.

[0028] As Figure 1 and Figure 2The device is arranged on a steel jacking pipe 6, the steel jacking pipe 6 is divided into a front jacking pipe and a rear jacking pipe, and the device is arranged on the front jacking pipe and the rear jacking pipe. Specifically, the device comprises a fixing plate 1, a stiffening plate 2, a connecting plate 3, a limiting rod 4 and a limiting baffle 5. The fixing plate 1 and the stiffening plate 2 are symmetrically arranged on the front jacking pipe and the rear jacking pipe of the steel jacking pipe 6, and are arranged on the same axis and at the same height. The height of the fixing plate 1 and the stiffening plate 2 is higher than the height of the oil cylinder in the relay station, so as to avoid affecting the work of the oil cylinder in the relay station during use. The connecting plate 3 is vertically connected above the fixing plate 1 and the stiffening plate 2. Two parallel limiting baffles 5 are arranged on one side of the connecting plate 3 to form a strip-shaped groove, and the limiting rod 4 is fixedly arranged on the other side of the connecting plate 3 and inserted into the strip-shaped groove between the limiting baffles 5 to form a lock structure similar to a bolt.

[0029] Thus, the device prevents the whole relay station from being axially deflected by using the limiting rod 4 to slide in the strip-shaped groove formed by the limiting baffle 5 without affecting the normal extension and contraction work of the oil cylinder in the relay station, thereby avoiding various problems caused by the axial deflection of the relay station. The device has simple and practical structure, high reliability and easy installation.

[0030] In one embodiment, the height of the limiting baffle 5 is consistent with the thickness of the limiting rod 4, so as to facilitate the observation of the radial jump during work.

[0031] In one embodiment, because the limiting rod 4 slides in the strip-shaped groove formed by the limiting baffle 5, in order to avoid excessive contact pressure between the two, which causes excessive friction and affects the work of the oil cylinder in the relay station, the side surface of the limiting rod 4 and the limiting baffle 5 have a gap of not more than 1 mm, i.e. the overall gap between the two is not more than 2 mm. In this way, the gap can be filled with lubricating oil to make the limiting rod 4 slide smoothly.

[0032] In one embodiment, as shown in Figure 5 , in order to ensure that the whole device has a protective effect during the work of the relay station, the limiting rod 4 is a solid steel bar, and when the front jacking pipe and the rear jacking pipe are at the farthest distance from each other, the length of the limiting rod 4 is still at least half of the length of the limiting rod 4 located in the strip-shaped groove of the limiting baffle 5.

[0033] In one embodiment, as shown in Figure 3 , Figure 4 , Figure 5 , a deflection prevention structure in a steel jacking pipe relay station comprises the deflection prevention device in the above embodiment, and four deflection prevention devices are evenly distributed in a ring shape, and adjacent two deflection prevention devices are arranged in reverse. In this way, the relay station is prevented from being deflected by multiple deflection prevention devices, and the deflection prevention effect is better.

[0034] In one embodiment, as shown in Figures 1 to 5 The fixed plate 1 and the stiffening plate 2 are both made of 3cm thick steel plates, the bottom is welded with the inner wall of the pipeline, and the top is welded with the connecting plate 3. In order to ensure the welding quality, the inner wall of the pipeline at the welding position can be temporarily anticorrosion to eliminate it. The connecting part with the steel top pipe 6 is made into a curved surface, and the connecting part with the connecting plate 3 is made into a plane, which is convenient for welding firmly. The fixed plate 1 and the stiffening plate 2 are respectively arranged on the steel top pipe 6 at both ends of the relay ring, and the height of the steel plate should be higher than the height of the oil cylinder in the relay chamber. The connecting plate 3 is made of 3cm thick steel plate, the size is 40*20cm, the bottom is welded with the fixed plate 1 and the stiffening plate 2, and at the same time, it is fully welded with the limiting rod 4 on both sides to ensure that it is well stressed and conducted. The limiting rod 4 is made of 5*5cm solid steel bar, the overall length is not less than the distance between the stiffening plates 2 welded on both sides of the relay chamber, and the limiting space composed of the relay chamber stroke and the limiting baffle 5 is also considered. One end of the limiting rod 4 extends into the gap between the two parallel steel blocks of the limiting baffle 5, and by connecting adjacent two pipelines, it limits the ring deflection of the relay chamber without limiting the axial extension and jacking. The limiting baffle 5 is two groups of rectangular steel blocks, which are welded on the connecting plate 3 in longitudinal direction with an interval of 5-10cm. The distance between the two groups of steel blocks is 5.2cm, which is 2mm larger than the limiting rod. The limiting rod 4 can freely extend and contract along the axis of the top pipe in the limiting baffle 5, and it cannot rotate in the ring direction. The size of the steel block can be adjusted according to the size of the rigid pin and the stress condition. The steel top pipe 6 and the relay chamber are the original components of the top pipe operation system. The structure and size of the device are set according to the structure and size of the steel top pipe 6, the relay chamber and the top force.

[0035] A kind of anti-deflection structure in steel top pipe relay chamber, a plurality of the device can be evenly distributed in ring direction on relay chamber, limit relay chamber ring deflection together;After jacking is completed, the device is cut off, and the inner anticorrosion of pipeline is restored, which does not affect the use of steel top pipe.

[0036] Considering the size of the top force of the relay chamber, the thick solid steel plate is preferred, the thickness of the steel plate selected in this example is not less than 3cm, and the steel strength is not less than Q355. The components of the device are integrally machined from a whole steel plate, and cannot be spliced and welded by multiple small blocks to avoid affecting the overall strength of the device.

[0037] The components are connected to each other mainly by welding, and the welding method is arc welding. The contact surface of each component mainly adopts fillet weld, and the weld height is 0.4 times the thinnest weld when double-sided welding is adopted, and 0.8 times the thinnest weld when single-sided welding is adopted.

[0038] The limiting rod should be consistent with the limiting space of the limiting baffle, and both of them do not take fixed measures, and can use friction reducing grease to reduce component friction. When the relay interval is pushed along the pipe axis direction, it does not limit its freedom, and through the limiting effect of the limiting baffle, it prevents the ring deflection and uneven deformation of the relay interval. Through the field operation, it is proved that the device is stable and reliable.

[0039] Finally, it should also be noted that in this document, such as the first and second relationship belongs to only to distinguish one entity or operation with another entity or operation, and does not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the term includes, contains or any other variant is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in such process, method, article or equipment.

[0040] The unit described as a separate component can or can not be physically separated, and the component displayed as a unit can or can not be a physical unit, that is, it can be located in one place, or it can be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment of the present application.

[0041] The above has described the embodiments of the present application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles, practical application or improvement of the technology in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A steel jacking pipe inter-station anti-deflection device, comprising a steel jacking pipe (6), the steel jacking pipe (6) is divided into a front jacking pipe and a rear jacking pipe, characterized in that, It also includes: fixed plate (1), stiffener (2), connecting plate (3), limiting rod (4), limiting baffle (5); the front pipe and the rear pipe of the steel pipe (6) are symmetrically provided with fixed plate (1) and stiffener (2), the fixed plate (1) and the stiffener (2) are located on the same axis and are arranged at the same height, the connecting plate (3) is vertically connected and arranged above the fixed plate (1) and the stiffener (2), two parallel limiting baffle (5) are connected and arranged on one side of the connecting plate (3) to form a strip-shaped groove, the limiting rod (4) is fixedly arranged on the other side of the connecting plate (3), and the limiting rod (4) is inserted into the strip-shaped groove between the limiting baffle (5) on the other side.

2. A deflection preventing device for a steel pipe jacking intermediate station according to claim 1, characterized in that: The height of the fixed plate (1) and the stiffener (2) is higher than the height of the oil cylinder in the relay.

3. A deflection preventing device for a steel pipe jacking intermediate station according to claim 1, characterized in that: The height of the limiting baffle (5) is consistent with the thickness of the limiting rod (4).

4. A deflection preventing device for a steel pipe jacking intermediate station according to claim 1, characterized in that: The side surface of the limiting rod (4) and the limiting baffle (5) have a gap of not more than 1mm.

5. A deflection preventing device for a steel pipe jacking intermediate station according to claim 1, characterized in that: The limiting rod (4) is a solid steel bar, and when the front pipe and the rear pipe are at the farthest end away from each other, the length of the limiting rod (4) is still such that at least one half of the limiting rod (4) is located in the strip-shaped groove of the limiting baffle (5).

6. A steel pipe jacking intermediate station anti-deflection structure, characterized in that: The anti-deflection device comprises the anti-deflection device according to any one of claims 1 to 5.

7. A deflection prevention structure for a steel pipe jacking intermediate station according to claim 6, characterized in that: A plurality of anti-deflection devices are evenly distributed in a ring shape.

8. The anti-deflection structure of a steel pipe jacking intermediate station according to claim 7, characterized in that: Two adjacent anti-deflection devices are arranged in a left-right reversed manner.

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