Pipeline foundation pit excavation supporting device

Abstract

The utility model relates to a foundation pit construction technology, and provides a pipeline foundation pit excavation supporting device which comprises a supporting mechanism, the supporting mechanism comprises a first baffle and a second baffle, the first baffle and the second baffle are in mirror symmetry, and the first baffle and the second baffle are used for resisting soil pressure from pit walls on the two sides of a foundation pit. A plurality of connecting pieces are installed between the first baffle and the second baffle and used for connecting the first baffle and the second baffle. According to the utility model, through the synergistic effect of the first baffle plate and the second baffle plate which are symmetrically arranged, the soil pressure generated by the pit walls on the two sides of the foundation pit in the excavation process can be effectively dispersed and resisted, and the stability and the safety of the excavation operation of the foundation pit are ensured. The telescopic design of the connecting piece is matched with the limiting plug pin mechanism, so that the supporting device can be flexibly adjusted according to the actual foundation pit size, the hoisting and moving processes of the supporting device are simplified through the arrangement of the hoisting mechanism, and the adaptability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit construction, in particular to a pipeline foundation pit excavation support device. Background Art

[0002] Pipeline foundation pit refers to a trench with a certain width, depth and length that is dug for laying, repairing or replacing underground pipelines during the construction of underground pipeline projects. Usually, the size of the foundation pit is determined by factors such as the diameter of the pipeline, the depth of the pipeline laying, the thickness of the soil covering the pipeline, and the working space required for construction. When excavating the foundation pit, a series of support measures need to be taken to ensure the stability of the soil around the foundation pit, prevent soil displacement or collapse caused by excavation, and ensure construction safety and long-term stable operation of pipeline facilities.

[0003] Existing foundation pit support devices are often fixed and cannot move with the construction workers. After the pipeline is laid in one section of the foundation pit, the support device needs to be installed for the next section of the foundation pit before safe work can be carried out.

[0004] The utility model aims to solve the problems of difficult movement, poor adaptability and low construction efficiency of traditional foundation pit supporting means when facing pipeline excavation construction. Utility Model Content

[0005] The purpose of the utility model is to solve the problems of difficult movement, poor adaptability and low construction efficiency of traditional foundation pit support means when facing pipeline excavation construction. The utility model adopts the following technical solutions:

[0006] A pipeline foundation pit excavation support device comprises a support mechanism, wherein the support mechanism comprises a first baffle and a second baffle, wherein the first baffle and the second baffle are mirror-symmetrical, and the first baffle and the second baffle are used to resist soil pressure from pit walls on both sides of the foundation pit;

[0007] A plurality of connecting members are installed between the first baffle plate and the second baffle plate, and the connecting members are used to connect the first baffle plate and the second baffle plate;

[0008] The connecting piece has a telescopic function, and the connecting piece includes a limit latch mechanism, and the limit latch mechanism is used to lock the telescopic state of the connecting piece;

[0009] Lifting mechanisms are installed on the tops of both sides of the first baffle and the second baffle, and the lifting mechanisms are used for lifting and moving the supporting device.

[0010] In a pipeline foundation pit excavation support device as described above, the connecting part includes a sleeve, one end of the sleeve is fixedly connected to the first baffle, a plurality of first plug holes are provided on the wall of the sleeve, a rod body is slidably sleeved inside the sleeve, one end of the rod body is fixedly connected to the second baffle, a plurality of second plug holes are provided on the rod body, the second plug holes can be connected to the first plug holes in the vertical direction, and the aperture of the second plug holes is consistent with the aperture of the first plug holes.

[0011] In the above-mentioned pipeline foundation pit excavation support device, the limit pin mechanism includes a pin, the diameter of one end of the pin is consistent with the hole diameter of the first plug hole, a through hole is formed on the side wall of the pin, and a clamping ring is sleeved in the through hole.

[0012] In the above-mentioned pipeline foundation pit excavation support device, the lifting mechanism includes a lifting lug, a lifting ring is provided inside the lifting lug, and the lifting ring is rotatably connected to the lifting lug.

[0013] In the above-mentioned pipeline foundation pit excavation support device, the lifting mechanism is equipped with a steel cable that can be connected thereto.

[0014] In the pipeline foundation pit excavation support device as described above, the support mechanism includes a plurality of reinforcing ribs, a plurality of grooves are formed on the side of the first baffle plate and the second baffle plate facing the foundation pit, and the plurality of reinforcing ribs are fixedly connected in the grooves.

[0015] In the pipeline foundation pit excavation support device as described above, the bottoms of the first baffle plate and the second baffle plate are both provided with inclined sections, and the inclined sections are inclined surfaces that gradually narrow from top to bottom, and the inclined surfaces of the first baffle plate and the second baffle plate are arranged opposite to each other.

[0016] A pipeline foundation pit excavation support device as described above also includes a first plane and a second plane, at least two connecting members horizontally arranged on the first plane constitute a first connecting assembly, at least two connecting members horizontally arranged on the second plane constitute a second connecting assembly, and the first connecting assembly is located on the upper side of the two connecting assemblies.

[0017] In the pipeline foundation pit excavation support device as described above, the projection of the reinforcing rib is a triangle, and the reinforcing rib is designed to be hollow in the vertical axis.

[0018] In the pipeline foundation pit excavation support device as described above, the projection of the groove is a rectangle.

[0019] Implementing the embodiments of the utility model has the following beneficial effects:

[0020] 1. In the utility model, the symmetrically arranged first baffle and the second baffle work together to effectively disperse and resist the soil pressure generated by the pit walls on both sides of the foundation pit during the excavation process, thereby ensuring the stability and safety of the foundation pit excavation operation. The telescopic design of the connector cooperates with the limit pin mechanism, so that the support device can be flexibly adjusted according to the actual size of the foundation pit. The configuration of the lifting mechanism simplifies the lifting and moving process of the support device, improves the adaptability of the device, and significantly improves the transfer efficiency between construction sites, thereby improving the overall construction efficiency and operation safety of the pipeline foundation pit excavation operation.

[0021] 2. In the utility model, the structural design of the reinforcing ribs not only enhances the rigidity and stability of the baffle, effectively disperses the soil pressure and prevents the baffle from deformation, but also reduces the weight and improves the torsion and bending resistance through the hollow design, thereby extending the service life of the support device.

[0022] In summary, the utility model solves the problems of difficult movement, poor adaptability and low construction efficiency of traditional foundation pit support means when facing pipeline excavation construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 The utility model is a structural schematic diagram of a pipeline foundation pit excavation support device.

[0025] Figure 2 The utility model is a structural schematic diagram of a first baffle of a pipeline foundation pit excavation support device.

[0026] Figure 3 The utility model is a schematic diagram of the structure of a second baffle of a pipeline foundation pit excavation support device.

[0027] Figure 4 The utility model is a structural schematic diagram of a reinforcing rib of a pipeline foundation pit excavation support device.

[0028] Figure 5 The utility model is a structural schematic diagram of a limit pin mechanism of a pipeline foundation pit excavation support device.

[0029] Figure 6 The utility model discloses a structural schematic diagram of a lifting mechanism of a pipeline foundation pit excavation support device. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0031] like Figures 1 to 6 As shown, the embodiment of the utility model provides a pipeline foundation pit excavation support device, including a support mechanism 10, wherein the support mechanism 10 includes a first baffle 2 and a second baffle 3, wherein the first baffle 2 and the second baffle 3 are mirror-symmetrical, and the first baffle 2 and the second baffle 3 are used to resist the soil pressure from the pit walls on both sides of the foundation pit;

[0032] A plurality of connectors 1 are installed between the first baffle plate 2 and the second baffle plate 3, and the connectors 1 are used to connect the first baffle plate 2 and the second baffle plate 3;

[0033] It also includes a first plane and a second plane, at least two of the connecting members 1 horizontally arranged on the first plane constitute a first connecting assembly, at least two of the connecting members 1 horizontally arranged on the second plane constitute a second connecting assembly, and the first connecting assembly is located on the upper side of the second connecting assembly;

[0034] The connecting member 1 has a telescopic function, and the connecting member 1 includes a limit latch mechanism 9, and the limit latch mechanism 9 is used to lock the telescopic state of the connecting member 1;

[0035] A lifting mechanism 5 is installed on the top of both sides of the first baffle 2 and the second baffle 3, and the lifting mechanism 5 is used for lifting and moving the supporting device.

[0036] The utility model mainly realizes the main supporting function through the supporting mechanism 10, wherein the supporting mechanism 10 comprises a symmetrically arranged first baffle 2 and a second baffle 3. The two baffles are like symmetrical images in a mirror, cooperating with each other to jointly bear the soil pressure generated by the pit walls on both sides of the foundation pit during the excavation process, thereby ensuring the stability of the foundation pit.

[0037] A plurality of connectors 1 are used to connect the first baffle 2 and the second baffle 3, and these connectors 1 have a telescopic function and can be flexibly adjusted according to the actual size of the foundation pit. In order to ensure the stability of the connector after adjustment, a limit latch mechanism 9 is specially designed, which can lock the telescopic state of the connector 1 to prevent it from moving when subjected to force.

[0038] The lifting mechanism 5 facilitates the lifting and moving operations of the support device, so that the support device can be quickly transferred between different construction sites of the foundation pit, thereby improving construction efficiency and operation safety.

[0039] like Figure 1 , Figure 2 , Figure 3 and Figure 5 A pipeline foundation pit excavation support device is shown, the connecting member 1 includes a sleeve 101, one end of the sleeve 101 is fixedly connected to the first baffle 2, the wall of the sleeve 101 is provided with a plurality of first plug holes 102, a rod body 103 is slidably sleeved inside the sleeve 101, one end of the rod body 103 is fixedly connected to the second baffle 3, the rod body 103 is provided with a plurality of second plug holes 104, and the aperture of the second plug holes 104 is consistent with the aperture of the first plug holes 102.

[0040] The limit latch mechanism 9 includes a latch 901 , the diameter of one end of the latch 901 is consistent with the aperture of the first plug hole 102 , a through hole 902 is formed on the side wall of the latch 901 , and a snap ring 903 is sleeved inside the through hole 902 .

[0041] The telescopic adjustment of the connecting member 1 is achieved by the relative sliding of the sleeve 101 and the rod body 103. When the distance between the two baffles needs to be adjusted, the rod body 103 can be pushed or pulled to slide in the sleeve 101, so that the position of the baffle can be flexibly adjusted according to the actual size of the foundation pit.

[0042] The locking operation is achieved by the limited latch mechanism 9. The diameter of one end of the latch 901 is consistent with the aperture of the first plug hole 102 and the second plug hole 104, so it can be inserted into the aligned plug holes. When the latch 901 is inserted into the plug hole, the snap ring 903 is hung in the through hole 902, thereby preventing the latch 901 from slipping out of the plug hole. The material of the snap ring 903 is elastic metal.

[0043] like Figure 1 and Figure 6 In the pipeline foundation pit excavation support device shown, the lifting mechanism 5 includes a lifting lug 501 , a lifting ring 502 is sleeved inside the lifting lug 501 , and the lifting ring 502 is rotatably connected to the lifting lug 501 .

[0044] The lifting mechanism 5 is equipped with a steel cable 6 that can be connected thereto.

[0045] The lifting eye 501 is a main component of the lifting mechanism 5, and bears the entire weight of the support device during the lifting process. The lifting ring 502 set in the lifting eye 501 can rotate freely, so that when using a lifting device such as a crane, through the connection between the steel cable 6 and the lifting ring 502, the rotation function of the lifting ring 502 allows the steel cable 6 to be stressed at different angles, avoiding friction between the steel cable 6 and the lifting eye 501, thereby reducing wear and safety hazards caused by friction.

[0046] Optionally, in some embodiments, the steel cables are replaced with iron chains.

[0047] like Figure 1 and Figure 6 A pipeline foundation pit excavation support device is shown, wherein the support mechanism 10 includes a plurality of reinforcing ribs 8, and a plurality of grooves 7 are formed on the side of the first baffle plate 2 and the second baffle plate 3 facing the foundation pit, and the plurality of reinforcing ribs 8 are fixedly connected in the grooves 7.

[0048] The projection of the reinforcing rib 8 is a triangle, and the reinforcing rib 8 is designed to be hollow vertically axially, with the vertex of the triangle facing the inside of the foundation pit.

[0049] The projection of the groove 7 is a rectangle.

[0050] The reinforcing rib 8 can enhance the structural strength and stability of the first baffle 2 and the second baffle 3. The reinforcing rib 8 adopts a triangular cross-section design, and its projection shape is a triangle, which can effectively disperse and withstand the soil pressure from the pit walls on both sides of the foundation pit, ensure that the baffle is not easy to deform under stress, increase the rigidity and stability inside the foundation pit, effectively resist the pressure from the soil, and prevent the occurrence of landslides. The apex of the reinforcing rib 8 faces the inside of the foundation pit, which can make the stress more evenly distributed inside the triangular structure, avoid stress concentration, and thus improve the bearing capacity of the overall structure.

[0051] The reinforcing rib 8 adopts a vertical axial hollow design, which can reduce the weight of the overall structure on the one hand, and on the other hand, the hollow structure can also improve the torsional performance and bending stiffness of the structure, thereby improving the overall bearing capacity and service life of the support device.

[0052] Optionally, in some embodiments, the projection of the reinforcing rib 8 is rectangular.

[0053] Optionally, in some embodiments, the projection of the groove 7 is wavy.

[0054] like Figure 1 A pipeline foundation pit excavation support device is shown, in which the bottom of the first baffle plate 2 and the second baffle plate 3 are both provided with an inclined section 4, and the inclined section 4 is an inclined surface that gradually narrows from top to bottom, and the inclined surface of the first baffle plate 2 and the inclined surface of the second baffle plate 3 are arranged opposite to each other.

[0055] The inclined section 4 can reduce the accumulation of soil at the bottom of the baffle, reduce the pressure of the soil on the baffle, thereby reducing the friction and facilitating the sliding of the support device in the foundation pit.

[0056] Optionally, in some embodiments, the bottom of the first baffle 2 and the second baffle 3 is a plane without an inclined section 4. The contact area between the bottom of the baffle and the soil is relatively large, which helps to increase the friction between the soil and the baffle, thereby improving the stability of the support device to a certain extent.

[0057] Specifically, the working principle of the present invention is as follows:

[0058] In actual work, the utility model of a pipeline foundation pit excavation support device firstly forms a mirror-like structure by symmetrically arranging the first baffle plate 2 and the second baffle plate 3 to jointly resist the soil pressure from both sides of the foundation pit to maintain stability during the foundation pit excavation process. Between the baffles, the distance between the first baffle plate 2 and the second baffle plate 3 is flexibly adjusted by a connector 1 with a telescopic function, and adaptive changes are made according to the actual size of the foundation pit, which is highly practical. After being adjusted in place, the telescopic state of the connector 1 is locked by a limit latch mechanism 9 to ensure that no displacement occurs when subjected to force.

[0059] The lifting mechanism 5, through the lifting ear 501 and the rotatably connected lifting ring 502, cooperates with the steel cable 6 (or optional iron chain) to safely and conveniently lift and move the support device, so that the support device can be pulled in the foundation pit in real time according to the progress of construction, thereby improving construction efficiency and safety.

[0060] The support device is provided with a groove 7 on the side of the baffle facing the foundation pit, and a reinforcing rib 8 is fixedly connected in the groove 7. The reinforcing rib adopts a triangular cross-section design. The structural design of the reinforcing rib 8 not only enhances the rigidity and stability of the baffle, effectively disperses the soil pressure and prevents the baffle from deforming, but also reduces the weight and improves the torsion and bending resistance through the hollow design, thereby extending the service life of the support device.

[0061] In summary, the utility model solves the problem that the quality of steel cage molding cannot be effectively guaranteed due to the easy deformation of the control mold in the traditional processing of stiffening hoops, manual measurement and operation errors during the production of welding main bars and spiral hoops, etc.

[0062] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information. In addition, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. 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 present invention 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 present invention.

[0063] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A pipeline foundation pit excavation support device, characterized in that: The supporting mechanism (10) comprises a first baffle (2) and a second baffle (3), wherein the first baffle (2) and the second baffle (3) are mirror-symmetrical, and the first baffle (2) and the second baffle (3) are used to resist soil pressure from pit walls on both sides of the foundation pit; A connecting member (1) is installed between the first baffle plate (2) and the second baffle plate (3), and the connecting member (1) is used to connect the first baffle plate (2) and the second baffle plate (3); The connecting piece (1) has a telescopic function, and the connecting piece (1) comprises a limit latch mechanism (9), wherein the limit latch mechanism (9) is used to lock the telescopic state of the connecting piece (1); A lifting mechanism (5) is installed on the top of both sides of the first baffle (2) and the second baffle (3), and the lifting mechanism (5) is used for lifting and moving the supporting device.

2. A pipeline foundation pit excavation support device according to claim 1, characterized in that: The connecting member (1) comprises a sleeve (101), one end of the sleeve (101) is fixedly connected to the first baffle (2), a plurality of first plug holes (102) are provided on the wall of the sleeve (101), a rod body (103) is slidably sleeved inside the sleeve (101), one end of the rod body (103) is fixedly connected to the second baffle (3), a plurality of second plug holes (104) are provided on the rod body (103), the second plug holes (104) and the first plug holes (102) can be connected in a vertical direction, and the aperture of the second plug holes (104) is consistent with the aperture of the first plug holes (102).

3. A pipeline foundation pit excavation support device according to claim 2, characterized in that: The limit latch mechanism (9) comprises a latch (901), the diameter of one end of the latch (901) being consistent with the hole diameter of the first plug hole (102), a through hole (902) being formed on the side wall of the latch (901), and a snap ring (903) being sleeved in the through hole (902).

4. A pipeline foundation pit excavation support device according to claim 1, characterized in that: The lifting mechanism (5) comprises a lifting eye (501), a lifting ring (502) is sleeved inside the lifting eye (501), and the lifting ring (502) is rotatably connected to the lifting eye (501).

5. The pipeline foundation pit excavation support device according to claim 1, characterized in that: The lifting mechanism (5) is equipped with a steel cable (6) that can be connected thereto.

6. A pipeline foundation pit excavation support device according to claim 1, characterized in that: The support mechanism (10) comprises a plurality of reinforcing ribs (8), a plurality of grooves (7) are provided on the side of the first baffle plate (2) and the second baffle plate (3) facing the foundation pit, and the plurality of reinforcing ribs (8) are fixedly connected in the grooves (7).

7. The pipeline foundation pit excavation support device according to claim 1, characterized in that: The bottom of each of the first baffle plate (2) and the second baffle plate (3) is provided with an inclined section (4), the inclined section (4) being an inclined surface which gradually narrows from top to bottom, and the inclined surface of the first baffle plate (2) and the inclined surface of the second baffle plate (3) are arranged opposite to each other.

8. The pipeline foundation pit excavation support device according to claim 1, characterized in that: It also comprises a first plane and a second plane, at least two of the connecting members (1) arranged horizontally on the first plane constitute a first connecting assembly, at least two of the connecting members (1) arranged horizontally on the second plane constitute a second connecting assembly, and the first connecting assembly is located on the upper side of the second connecting assembly.

9. The pipeline foundation pit excavation support device according to claim 6, characterized in that: The projection of the reinforcing rib (8) is a triangle, and the reinforcing rib (8) is designed to be hollow in a vertical axial direction.

10. A pipeline foundation pit excavation support device according to claim 6, characterized in that: The projection of the groove (7) is a rectangle.

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