Pushing construction retreat prevention device

Abstract

The utility model relates to the field of incremental launching construction technology, concretely relates to a kind of incremental launching construction retreat stop device, including base and vertical rod;The normal of base is along the first direction arrangement;Vertical rod, one end of vertical rod is connected with base through swing joint, the axis of swing joint is along the second direction arrangement, and the second direction is perpendicular to the first direction;The other end of vertical rod is provided with tenon, and vertical rod swing around swing joint can drive tenon to insert or leave tenon groove on the side of vertical pipe section;The number of vertical rod is at least two, and vertical rod is spaced distribution on base.The utility model can overcome the interference of the operation of the existing retreat stop device to incremental launching device, and repeatedly disassembles limit pin, leading to the inefficiency of incremental launching construction.

Description

Technical Field

[0001] This utility model relates to the field of jacking construction technology, and in particular to a jacking construction anti-backward device. Background Technology

[0002] The drainage system of a nuclear power plant generally includes a transverse tunnel and a vertical drainage riser located beneath the seabed. The top of the drainage riser needs to protrude from the seabed. To reduce the amount of work involved in offshore construction, existing technologies often use the jacking method to construct the drainage riser. Specifically, this involves: reserving a jacking opening at the top of the transverse tunnel; transporting the drainage riser into the transverse tunnel in multiple segments along the vertical direction; and then using a jacking device to push each segment upwards from the jacking opening. After each segment is jacked up, the jacking device needs to be retracted downwards to accommodate the next segment. Therefore, to prevent the previously constructed segment from falling down with the jacking device, a backstop device needs to be installed inside the tunnel.

[0003] Existing anti-reverse devices generally include a support surrounding the riser segment, with several limiting pins spaced circumferentially along the support. When it is necessary to lock the segment position, each limiting pin is inserted into a pre-drilled hole on the side wall of the segment to fix the segment relative to the support, preventing the segment from descending with the jacking device. When it is necessary to jack the segment, each limiting pin is pulled out of the hole. However, on the one hand, repeatedly disassembling and assembling a large number of limiting pins will significantly reduce the construction efficiency of the jacking operation. On the other hand, the support surrounding the riser will also interfere with the operation of the jacking device, which will easily lead to a further reduction in the construction efficiency of the jacking operation. This makes it difficult to apply to some drainage system construction with tight schedules. Therefore, it is urgent to develop a new type of anti-reverse device for jacking construction. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing anti-reverse devices that interfere with the operation of the jacking device and require repeated disassembly and reassembly of the limit pins, resulting in low construction efficiency of jacking construction, and to provide a jacking construction anti-reverse device.

[0005] In a first aspect, the present invention provides a jacking construction anti-backward device, comprising a base and a vertical pole; the normal of the base is arranged along a first direction; the vertical pole has one end connected to the base via a swing joint, the axis of the swing joint is arranged along a second direction, the second direction being perpendicular to the first direction; the other end of the vertical pole is provided with a tenon, and the vertical pole swings around the swing joint to drive the tenon to insert into or leave the mortise on the side of the riser segment; the number of vertical poles is at least two, and the vertical poles are spaced apart on the base.

[0006] Preferably, it also includes a locking device for locking the swinging degree of freedom of the swing joint.

[0007] Preferably, the locking device is located on the side of the upright away from the center of the base. The locking device includes a telescopic push rod and a limiting block. The axis of the telescopic push rod is set along a third direction, and both the first direction and the second direction are perpendicular to the third direction. The limiting block is connected to the end of the push rod near the upright. The extension and retraction of the telescopic push rod can cause the limiting block to abut or separate from the side wall of the upright.

[0008] Preferably, the limiting block is provided with limiting stops on both sides along the second direction, and the distance between the limiting stops on both sides along the second direction is greater than or equal to the width of the upright along the second direction.

[0009] Preferably, the telescopic push rod includes a threaded telescopic rod.

[0010] Preferably, the tenon includes a top plate, a side plate, and a protrusion; the top plate is connected to the end of the upright away from the base, and the normal of the top plate is parallel to the axis of the upright; the side plate is connected to one side of the top plate, and the normal of the side plate is perpendicular to the axis of the upright; the protrusion is connected to the side of the side plate facing the upright segment, and the protrusion is used to insert into the mortise.

[0011] Preferably, the base is further provided with a reaction support, which extends in the first direction away from the base, and the upright is connected to the end of the reaction support away from the base through a swing joint.

[0012] Preferably, the upright comprises a hollow steel pipe.

[0013] Preferably, the upright is also provided with lifting lugs.

[0014] Preferably, the number of uprights is at least four, and the uprights are distributed in a rectangular array on the base.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a jacking construction anti-reverse device, which uses a swingable upright with tenons to prevent the riser segment from retracting. During jacking construction, the position of the riser segment can be locked or unlocked simply by repeatedly swinging the upright, without the need for repeated disassembly and assembly of limit pins as in existing technologies. This can greatly improve the construction efficiency of jacking construction and is more suitable for the construction of nuclear power plant drainage systems with tight schedules. Attached Figure Description

[0016] Figure 1 This is a front view of the anti-reverse device for jacking construction according to the present invention. Figure 1 ; Figure 2 This is a front view schematic diagram of a jacking construction anti-backward device according to this utility model. Figure 2 ; Figure 3 This is a partially enlarged front view of the tenon of a jacking construction anti-backward device according to this utility model; Figure 4 This is a partially enlarged top view of the limiting block of a jacking construction anti-backward device according to this utility model; icon: 1-Base; 11-Reaction bracket; 2-Upright pole; 3-Swing joint; 4-Tenon; 41-Top plate; 42-Side plate; 43-Protrusion; 51-Telescopic push rod; 52-Limit block; 53-Limit stop; 6-Pushing device; 7-Upright pipe segment; 71-Tongue groove. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0018] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0019] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0020] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0021] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0022] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0023] Example 1 like Figures 1 to 4 As shown, a jacking construction anti-reverse device includes a base 1 and a vertical pole 2. The normal direction of the base 1 is set along a first direction, which is parallel to the height direction when the base 1 is installed in the tunnel. The center of the base 1 is used to set the jacking device 6. One end of the vertical pole 2 is connected to the base 1 through a swing joint 3, the axis of which is set along a second direction, which is perpendicular to the first direction. The other end of the vertical pole 2 is provided with a tenon 4, which can drive the tenon 4 to swing around the swing joint 3. Figure 1 The tenon 71 is inserted into the side of the riser segment 7 as shown, or as... Figure 2 The tenon 71 is shown as being away from the side of the riser segment 7; the number of uprights 2 is at least two, and the uprights 2 are distributed at intervals around the center of the base 1.

[0024] exist Figures 1 to 4 The various directions in this embodiment are also marked using a Cartesian coordinate system, where the X-axis represents the first direction, that is, the pushing direction of the jacking device 6; the Y-axis represents the second direction; and the Z-axis represents the third direction.

[0025] When it is necessary to install the riser section 7 on the jacking device 6, it can be done as follows: Figure 2 As shown, the upright 2 is swung away from the jacking device 6, thereby increasing the distance between the tops of the uprights 2 on both sides of the jacking device 6. This provides more space for workers to hoist and perform other operations on the riser segment 7, and reduces the risk of collision between the jacking device 6 and the upright 2 when it pushes upward. When the jacking device 6 needs to be lowered after completing the jacking, it can be lowered as follows: Figure 1 As shown, the upright 2 is swung toward the side closer to the jacking device 6, so that the tenon 4 is inserted into the mortise 71 on the side of the riser segment 7, thereby supporting the riser segment 7 above the base 1 through the upright 2, and achieving the anti-reverse function of the riser segment 7.

[0026] As can be seen from the above, the anti-reverse device for jacking construction in this embodiment uses the upright 2 with tenon 4 to prevent the riser segment 7 from retracting. During jacking construction, the position of the riser segment 7 can be locked or unlocked simply by repeatedly swinging the upright 2, without the need for repeated disassembly and assembly of the limiting pin as in the prior art. This significantly improves the construction efficiency of jacking construction and is more suitable for the construction of nuclear power plant drainage systems with tight schedules. At the same time, the anti-reverse device for jacking construction in this embodiment does not have the bracket surrounding the jacking device 6 as in the prior art, which allows workers to install the riser segment 7 and carry out jacking operations more efficiently and quickly, thereby further improving the construction efficiency and speed of this embodiment.

[0027] In optional implementations, such as Figure 1 As shown, when the tenon 4 is inserted into the mortise 71, the axis of the upright 2 is parallel to the first direction, so that the upright 2 mainly bears compressive stress. Compared with the limit pin in the prior art, which needs to bear shear stress, this embodiment has a better stress state and thus can obtain a higher safety factor. At the same time, this arrangement can also significantly reduce the lever arm of the gravity of the riser segment 7 to the center of the swing joint 3, thereby reducing the risk of the upright 2 spontaneously tilting due to the weight of the riser segment 7 and thus causing the anti-reverse failure, thereby further improving the reliability of this embodiment.

[0028] In an optional embodiment, the swing joint 3 can adopt an existing structure, for example: perforated ear plates are respectively provided on the end of the upright 2 and the base 1, and the two perforated ear plates are connected by a cylindrical pin; or a pivot is provided on one of the upright 2 and the base 1, and a round hole is provided on the other of the upright 2 and the base 1, and the pivot is inserted into the round hole.

[0029] In an optional embodiment, a locking device is also included to lock the swing degree of freedom of the swing joint 3. The locking device can adopt an existing structure, such as a spring pin, pawl mechanism or ratchet mechanism between the upright 2 and the base 1, or the swing joint 3 with built-in locking function can be used directly.

[0030] This embodiment can lock the relative angle between the upright 2 and the base 1, preventing the upright 2 from swinging unexpectedly due to external interference, causing the tenon 4 to accidentally disengage from the mortise 71, which in turn causes the riser segment 7 to fall; or preventing the upright 2 from accidentally approaching the jacking device 6 and the riser segment 7 during the jacking process, which would cause the upright 2 to interfere with the jacking device 6 or the riser segment 7.

[0031] In an optional embodiment, the locking device is located on the side of the upright 2 away from the center of the base 1. The locking device includes a telescopic push rod 51 and a limiting block 52. The axis of the telescopic push rod 51 is set along a third direction. The telescopic push rod 51 is fixed relative to the base 1. For example, the telescopic push rod 51 can be connected to the base 1 by scaffolding. The first direction and the second direction are both perpendicular to the third direction. The limiting block 52 is connected to the end of the push rod near the upright 2. The extension and retraction of the telescopic push rod 51 can cause the limiting block 52 to abut or separate from the side wall of the upright 2.

[0032] This embodiment proposes one specific locking device; such as... Figure 1 As shown, when it is necessary to keep the tenon 4 inserted into the mortise 71, the telescopic rod can be extended, thereby driving the limiting block 52 to approach and abut against the side wall of the upright 2, thus pressing the tenon 4 into the mortise 71; as Figure 2 As shown, when it is necessary to keep the tenon 4 separate from the mortise 71, the telescopic rod can be shortened, so that the upright 2 can swing away from the jacking device 6, thereby separating the tenon 4 from the mortise 71.

[0033] In an optional embodiment, limit stops 53 are respectively provided on both sides of the limiting block 52 along the second direction. The specific structure of the limit stops 53 includes, but is not limited to, baffles, blocks, or rods. The distance between the two limit stops 53 along the second direction is greater than or equal to the width of the upright 2 along the second direction, so that the limiting block 52 can move as follows: Figure 4 As shown, this better secures pole 2.

[0034] In optional embodiments, the telescopic push rod 51 may take the form of, but is not limited to, a hydraulic rod, a cylinder, or an electric telescopic rod.

[0035] In an optional embodiment, the telescopic push rod 51 includes a threaded telescopic rod, which can automatically lock its length by utilizing the self-locking property of the thread, thereby automatically locking the swing degree of freedom of the swing joint 3.

[0036] In an optional embodiment, the tenon 4 includes a top plate 41, a side plate 42, and a protrusion 43; the top plate 41 is connected to the end of the upright 2 away from the base 1, and the normal of the top plate 41 is parallel to the axis of the upright 2; the side plate 42 is connected to the side of the top plate 41 near the center of the base 1, and the normal of the side plate 42 is perpendicular to the axis of the upright 2; the protrusion 43 is connected to the side of the side plate 42 facing the upright pipe segment 7, and the protrusion 43 is used to insert into the mortise 71.

[0037] This embodiment provides one specific tenon 4 structure, which can more evenly distribute the load generated by the riser segment 7 on the protrusion 43 to the top of the riser 2 and the side wall of the riser 2, thereby suppressing stress concentration and improving the structural safety of this embodiment.

[0038] It is important to note that Figure 3 Although the top plate 41, side plate 42 and protrusion 43 are divided by dashed lines, it is only for the convenience of distinguishing the areas where the top plate 41, side plate 42 and protrusion 43 are located. The top plate 41, side plate 42 and protrusion 43 can be independent components that are connected to each other, or they can be three parts on an integrated component.

[0039] In an optional embodiment, a reaction support 11 is also provided on the base 1. The reaction support 11 extends in a direction away from the base 1 along a first direction, and the upright 2 is connected to the end of the reaction support 11 away from the base 1 through a swing joint 3.

[0040] This embodiment can better transfer the load on the upright 2 to the base 1, and can also reduce the length of the upright 2, thereby reducing the area swept by the upright 2 during swinging, and thus reducing the risk of the upright 2 interfering with other structures during swinging.

[0041] In an optional embodiment, the reaction support 11 is assembled from steel profiles to ensure that the reaction support 11 has sufficient strength.

[0042] In an optional embodiment, the base 1 is used to transfer the load generated by the riser segment 7 to the tunnel structure, and its specific structural form includes, but is not limited to, steel structure, concrete structure or steel-concrete structure.

[0043] In an optional embodiment, the upright 2 includes a hollow steel pipe, thereby reducing the self-weight and material consumption of the upright 2 while ensuring the structural strength of the upright 2.

[0044] In an optional embodiment, the upright 2 is also provided with lifting lugs to facilitate the hoisting of the upright 2 by workers.

[0045] In an optional embodiment, the number of uprights 2 is at least four, and the uprights 2 are distributed in a rectangular array on the base 1 to more reliably support the riser segment 7.

[0046] The above content is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for preventing backsliding during jacking construction, characterized in that, include: Base (1), the normal of the base (1) is arranged along a first direction; The upright (2) has one end connected to the base (1) via a swing joint (3). The axis of the swing joint (3) is set along a second direction, which is perpendicular to the first direction. The other end of the upright (2) is provided with a tenon (4). The upright (2) can swing around the swing joint (3) to drive the tenon (4) to insert into or leave the mortise (71) on the side of the riser segment (7). The number of the uprights (2) is at least two, and the uprights (2) are spaced apart on the base (1).

2. The anti-backward device for jacking construction according to claim 1, characterized in that, It also includes a locking device for locking the swing degree of freedom of the swing joint (3).

3. The anti-backward device for jacking construction according to claim 2, characterized in that, The locking device is located on the side of the upright (2) away from the center of the base (1). The locking device includes a telescopic push rod (51) and a limiting block (52). The axis of the telescopic push rod (51) is set along a third direction, and both the first direction and the second direction are perpendicular to the third direction. The limiting block (52) is connected to the end of the push rod near the upright (2). The telescopic push rod (51) can extend and retract to drive the limiting block (52) to abut or separate from the side wall of the upright (2).

4. The anti-backward device for jacking construction according to claim 3, characterized in that, The limiting block (52) is provided with limiting stops (53) on both sides along the second direction, and the distance between the limiting stops (53) on both sides along the second direction is greater than or equal to the width of the upright (2) along the second direction.

5. The anti-backward device for jacking construction according to claim 3, characterized in that, The telescopic push rod (51) includes a threaded telescopic rod.

6. A jacking construction anti-backward device according to any one of claims 1 to 5, characterized in that, The tenon (4) includes a top plate (41), a side plate (42), and a protrusion (43); the top plate (41) is connected to the end of the upright (2) away from the base (1), and the normal of the top plate (41) is parallel to the axis of the upright (2); the side plate (42) is connected to one side of the top plate (41), and the normal of the side plate (42) is perpendicular to the axis of the upright (2); the protrusion (43) is connected to the side of the side plate (42) facing the riser segment (7), and the protrusion (43) is used to insert into the mortise (71).

7. A jacking construction anti-backward device according to any one of claims 1 to 5, characterized in that, The base (1) is also provided with a reaction support (11), which extends in a first direction away from the base (1). The upright (2) is connected to the end of the reaction support (11) away from the base (1) through the swing joint (3).

8. A jacking construction anti-backward device according to any one of claims 1 to 5, characterized in that, The upright (2) includes a hollow steel pipe.

9. A jacking construction anti-backward device according to any one of claims 1 to 5, characterized in that, The upright (2) is also equipped with a lifting lug.

10. A jacking construction anti-backward device according to any one of claims 1 to 5, characterized in that, The number of the uprights (2) is at least four, and the uprights (2) are distributed in a rectangular array on the base (1).

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