A support device for rock underground excavation

Abstract

The utility model discloses a kind of supporting devices of underground excavation of rock and soil, it is related to supporting technical field, including multiple groups of detachable connection's supporting mechanism, supporting mechanism includes two groups of supporting piece, and two groups of supporting piece are connected through multiple groups of connecting piece, the supporting piece includes the supporting plate of inside hollow, the one side of the supporting plate is fixed with plugboard, and recess is provided in the top of plugboard, the other side of the supporting plate is fixed with connecting plate, the bottom end of connecting plate is fixed with the protruding block compatible with recess, it is convenient for adjacent two groups of supporting mechanism splicing, every supporting plate inside is equipped with stabilizer, for improving the stability of supporting mechanism. The utility model can adapt to different length's foundation pit supporting work, wide application range, and after splitting, it is convenient to carry and transport, improve the convenience of on-site operation.

Description

Technical Field

[0001] This utility model relates to the field of support technology, specifically to a support device for underground excavation in rock and soil. Background Technology

[0002] Marl is unevenly distributed in the eastern and northern parts of Jinan. Marl is a transitional type of rock between carbonate rocks and clay rocks. During the construction of municipal road pipelines, it is necessary to excavate foundation pits in relatively hard marl and use support devices to support the sidewalls of the foundation pits to control soil deformation, prevent collapse, and ensure the stability of the excavation face and construction safety.

[0003] Currently, to meet the support requirements of foundation pits of different lengths, several telescopic support devices have emerged on the market, such as a support device for underground excavation in rock and soil (publication number CN222206387U), which supports foundation pits of different lengths by extending and retracting the extension plate of the main support plate. However, existing telescopic support devices have the following drawbacks in practical use: their telescopic length is limited by structural design, resulting in a significant upper limit. For longer foundation pits, the support coverage of a single device cannot meet the requirements. If the foundation size of the support device is designed to be very long to accommodate longer foundation pits, it is inconvenient to handle and transport, making it difficult to use. Utility Model Content

[0004] The purpose of this utility model is to provide a support device for underground excavation in rock and soil, so as to overcome the shortcomings of the existing technology. It can be adapted to the support work of foundation pits of different lengths, has a wide range of applications, and is easy to handle and transport after being disassembled, thus improving the convenience of on-site operations.

[0005] This utility model provides a support device for underground excavation in rock and soil, including multiple sets of detachably connected support mechanisms. Each support mechanism includes two sets of support members, which are connected by multiple sets of connectors.

[0006] The support includes a hollow support plate with an insert plate fixed on one side and a groove on the top of the insert plate. A connecting plate is fixed on the other side of the support plate, and a protrusion that matches the groove is fixed at the bottom of the connecting plate, which facilitates the splicing of two adjacent support mechanisms.

[0007] Each support plate has a stabilizing component inside to improve the stability of the support mechanism.

[0008] In the aforementioned support device for underground excavation in rock and soil, preferably, when multiple support mechanisms are spliced ​​together, a protrusion on the support member of one set of support mechanisms is inserted into a groove on the support member of another set of support mechanisms.

[0009] Preferably, a plurality of insert rods are fixed at the bottom of the support plate, and the insert rods are inserted into the bottom of the pit to improve the stability of the support mechanism.

[0010] Preferably, the stabilizing component includes a movable plate 1 slidably disposed within the support plate, a plurality of insert rods 2 fixed on one side of the movable plate 1, a movable plate 2 disposed on the other side of the movable plate 1, the movable plate 2 disposed inside the support plate, and a plurality of springs fixed between the movable plate 2 and the movable plate 1.

[0011] Preferably, an electric push rod is fixed on the side of the support plate near the second movable plate, and the piston rod of the electric push rod passes through the support plate and is fixed on the side of the second movable plate away from the spring; the support plate has the same number of through holes as the second insertion rod on the side near the second insertion rod, and the through holes correspond one-to-one with the second insertion rod, and the electric push rod drives the second insertion rod to pass through the through holes and insert into the side wall of the pit to improve the stability of the support mechanism.

[0012] Preferably, guide rods are fixed at all four corners of the movable plate two on the side away from the spring. The guide rods pass through the support plate and extend into the outside of the support plate, and the guide rods are slidably connected to the support plate to guide the movement of the movable plate two.

[0013] Preferably, the connector includes a hollow rod, with movable rods at both ends of the hollow rod. The ends of the two movable rods that are close to each other extend into the hollow rod, and the ends of the two movable rods that are far apart are fixed with a locking block. Each set of support mechanisms has a locking plate fixed on one side of the two support plates that are close to each other, and the locking plate and the locking block correspond one-to-one. The locking block is inserted into the inside of the locking plate.

[0014] Preferably, the movable rod has multiple through holes 1, and the hollow rod has two holes 2 at both ends. A pin is inserted between the two holes and the through holes 1 to fix the hollow rod and the movable rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The support mechanism adopts a multi-set detachable splicing design, which can achieve rapid assembly. The number of support mechanisms can be increased or decreased as needed according to the length of the foundation pit, thus adapting to foundation pit support work of different lengths and having a wide range of applications. Moreover, the support device is easy to handle and transport after being disassembled, which improves the convenience of on-site operations. 2. Insert the first insertion rod at the bottom of the support plate into the bottom of the pit, and at the same time drive the second insertion rod to insert into the side wall of the pit through the electric push rod, so as to improve the connection strength between the support device and the pit, prevent the device from shifting, and improve the stability of the support. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the present invention; Figure 2This is a structural diagram of the support component; Figure 3 This is a diagram of the internal structure of the support plate; Figure 4 This is a top sectional view of the support component; Figure 5 This is a structural diagram of the connector.

[0017] Explanation of reference numerals in the attached figures: 1-Support component, 11-Support plate, 12-Insertion plate, 13-Groove, 14-Connecting plate, 15-Protrusion, 16-Insertion rod one; 2-Stabilizer, 21-Moving plate one, 22-Moving plate two, 23-Spring, 24-Plug two, 25-Electric push rod, 26-Guide rod; 3-Connector, 31-Hollow rod, 32-Modible rod, 33-Clocking block, 34-Clocking plate, 35-Socket one, 36-Socket two, 37-Pin. Detailed Implementation

[0018] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] like Figures 1-5 As shown, this utility model provides a support device for underground excavation in rock and soil, including multiple sets of detachably connected support mechanisms. Each support mechanism includes two sets of support members 1. Specifically, each support member 1 includes a hollow support plate 11. Multiple insertion rods 16 are fixed to the bottom of the support plate 11. The insertion rods 16 are inserted into the bottom of the pit to improve the stability of the support mechanism.

[0020] A plate 12 is fixed on one side of the support plate 11, and a groove 13 is provided on the top of the plate 12. A connecting plate 14 is fixed on the other side of the support plate 11, and a protrusion 15 that matches the groove 13 is fixed at the bottom of the connecting plate 14.

[0021] Two sets of support members 1 are connected by multiple sets of connectors 3. Each connector 3 includes a hollow rod 31, with movable rods 32 at both ends. The ends of the two movable rods 32 that are close to each other extend into the hollow rod 31, and the ends of the two movable rods 32 that are far apart are fixed with locking blocks 33. Each set of support mechanisms has two support plates 11 that are close to each other with locking plates 34, and the locking plates 34 correspond one-to-one with the locking blocks 33. The movable rods 32 have multiple through holes 35, and the hollow rods 31 have two holes 36 at both ends. Pins 37 are inserted between the two holes 36 and the through holes 35 to fix the hollow rods 31 and the movable rods 32.

[0022] In use, the two support plates 11 are placed on the two side walls of the pit respectively. At the same time, the insertion rod 16 at the bottom of the support plate 11 is inserted into the bottom of the pit to improve the stability of the support mechanism. Then, the movable rod 32 of the connector 3 extends out of the hollow rod 31 to a suitable length. Then, the locking block 33 is inserted into the locking plate 34 of the two support plates 11. Then, the pin 37 is inserted into the hollow rod 31 and the insertion hole 35 to fix them, thereby realizing the assembly of the support 1. Next, multiple assembled support components 1 are placed into the foundation pit. Then, between two adjacent sets of support components 1, the protrusion 15 on one set of support components 1 is inserted from top to bottom into the groove 13 on the other set of support components 1, thereby enabling the splicing of two adjacent sets of support mechanisms. In this way, multiple sets of support mechanisms can be spliced ​​as needed to support foundation pits of different lengths. This method has a wide range of applications, and the multiple sets of support mechanisms are easy to disassemble, which facilitates the handling and transportation of the support devices and improves the convenience of on-site operations.

[0023] Next, a stabilizing element 2 is provided inside each support plate 11 to improve the stability of the support mechanism. Specifically, the stabilizing element 2 includes a movable plate 21 that is slidably disposed inside the support plate 11. A plurality of insert rods 24 are fixed on one side of the movable plate 21, and a movable plate 22 is provided on the other side of the movable plate 21. The movable plate 22 is disposed inside the support plate 11.

[0024] An electric push rod 25 is fixed to the side of the support plate 11 near the movable plate 22. The piston rod of the electric push rod 25 passes through the support plate 11 and is fixed to the side of the movable plate 22 away from the spring 23. The support plate 11 has the same number of through holes as the insertion rod 24, and the through holes correspond one-to-one with the insertion rod 24. The electric push rod 25 drives the insertion rod 24 to pass through the through holes and insert into the side wall of the pit to improve the stability of the support mechanism. The electric push rod 25 is controlled by an external controller, which will not be described further here.

[0025] Guide rods 26 are fixed at each of the four corners of the movable plate 22 away from the spring 23. The guide rods 26 pass through the support plate 11 and extend into the outside of the support plate 11. The guide rods 26 are slidably connected to the support plate 11 and are used to guide the movement of the movable plate 22.

[0026] After the support device is placed in the pit, the movable plate 22, movable plate 21 and insert rod 24 are moved by the electric push rod 25 until the insert rod 24 passes through the through hole on the support plate 11 and is inserted into the side wall of the pit, thereby improving the stability of the support device and thus improving the support effect.

[0027] In addition, this utility model has multiple springs 23 fixed between the second movable plate 22 and the first movable plate 21. By moving the second movable plate 22 and compressing the multiple springs 23, the elastic force of the multiple springs 23 is evenly applied to the first movable plate 21, which facilitates the even distribution of pressure on the side wall of the foundation pit, avoids excessive local stress, and helps protect the soil of the side wall of the foundation pit. At the same time, since the soil of the foundation pit will continuously exert pressure on the support device due to slow deformation over time, the springs 23 can adapt to this displacement by slow compression, avoiding overload of the support device due to rigid resistance.

[0028] The basic principles of this utility model have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this utility model are merely examples and not limitations, and should not be considered as essential features of each embodiment of this utility model. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the utility model from being implemented using the aforementioned specific details.

[0029] The block diagrams of the devices, apparatuses, equipment, and systems involved in this utility model are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0030] Additionally, as used herein, the "or" used in a list of items beginning with "at least one" indicates a separate list, such that a list of, for example, "at least one of A, B, or C" means A or B or C, or AB or AC or BC, or ABC (i.e., A and B and C). Furthermore, the word "exemplary" does not imply that the described example is preferred or better than other examples.

[0031] It should also be noted that in the system and method of this utility model, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this utility model.

[0032] Various changes, substitutions, and modifications can be made to the technology described herein without departing from the teachings defined by the appended claims. Furthermore, the scope of the claims of this utility model is not limited to the specific aspects of the processes, machines, manufacturing processes, events, means, methods, and actions described above. Currently existing or later-developed processes, machines, manufacturing processes, events, means, methods, or actions that perform substantially the same function or achieve substantially the same result as the corresponding aspects described herein can be utilized. Therefore, the appended claims include such processes, machines, manufacturing processes, events, means, methods, or actions within their scope.

[0033] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the present invention. Therefore, the present invention is not intended to be limited to the aspects shown herein, but rather to be carried out within the widest scope consistent with the principles and novel features disclosed herein.

[0034] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present invention to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations therein.

Claims

1. A support device for underground excavation in rock and soil, characterized in that: It includes multiple sets of detachable support mechanisms, each support mechanism including two sets of support members (1), which are connected by multiple sets of connectors (3); The support member (1) includes a hollow support plate (11), a plug plate (12) is fixed on one side of the support plate (11), and a groove (13) is provided on the top of the plug plate (12). A connecting plate (14) is fixed on the other side of the support plate (11), and a protrusion (15) that matches the groove (13) is fixed at the bottom of the connecting plate (14) to facilitate the splicing of two adjacent support mechanisms. Each support plate (11) has a stabilizer (2) inside to improve the stability of the support mechanism.

2. The support device for underground excavation in rock and soil according to claim 1, characterized in that: When multiple support mechanisms are spliced ​​together, the protrusion (15) on the support member (1) of one set of support mechanisms is inserted into the groove (13) on the support member (1) of another set of support mechanisms.

3. The support device for underground excavation in rock and soil according to claim 1, characterized in that: The bottom end of the support plate (11) is fixed with a plurality of insert rods (16), which are inserted into the bottom of the pit to improve the stability of the support mechanism.

4. The support device for underground excavation in rock and soil according to claim 1, characterized in that: The stabilizer (2) includes a movable plate (21) that is slidably disposed in the support plate (11). A plurality of insert rods (24) are fixed on one side of the movable plate (21), and a movable plate (22) is provided on the other side of the movable plate (21). The movable plate (22) is disposed inside the support plate (11), and a plurality of springs (23) are fixed between the movable plate (22) and the movable plate (21).

5. The support device for underground excavation in rock and soil according to claim 4, characterized in that: An electric push rod (25) is fixed on the side of the support plate (11) near the movable plate two (22). The piston rod of the electric push rod (25) passes through the support plate (11) and is fixed on the side of the movable plate two (22) away from the spring (23). The support plate (11) has the same number of through holes as the second insertion rod (24) on the side near the second insertion rod (24), and the through holes correspond one-to-one with the second insertion rod (24). The electric push rod (25) drives the second insertion rod (24) through the through holes and inserts it into the side wall of the pit to improve the stability of the support mechanism.

6. The support device for underground excavation in rock and soil according to claim 4, characterized in that: The movable plate 2 (22) has guide rods (26) fixed at each of its four corners away from the spring (23). The guide rods (26) pass through the support plate (11) and extend into the outside of the support plate (11). The guide rods (26) are slidably connected to the support plate (11) to guide the movement of the movable plate 2 (22).

7. The support device for underground excavation in rock and soil according to claim 1, characterized in that: The connector (3) includes a hollow rod (31), and each end of the hollow rod (31) is provided with a movable rod (32). The ends of the two movable rods (32) that are close to each other extend into the hollow rod (31), and the ends of the two movable rods (32) that are far apart are fixed with a locking block (33). Each set of support mechanisms has a card plate (34) fixed on one side of the two support plates (11) that are close to each other, and the card plate (34) and the card block (33) correspond one-to-one. The card block (33) is inserted into the card plate (34).

8. The support device for underground excavation in rock and soil according to claim 7, characterized in that: The movable rod (32) has multiple insertion holes (35) that pass through it. The hollow rod (31) has insertion holes (36) at both ends. A pin (37) is inserted between the insertion hole (36) and the insertion hole (35) that communicates with it, for fixing the hollow rod (31) and the movable rod (32).

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