Temporary support structure for longitudinal beam of upper pilot tunnel

Abstract

The application discloses a temporary support structure for a subway upper guide hole bottom longitudinal beam, which comprises a lower support rod and an upper support rod, the bottom of the lower support rod is provided with a lower support piece, the top of the upper support rod is provided with an upper support piece, the bottom of the upper support rod is provided with a first screw rod, the top of the lower support rod is provided with a first screw hole used for cooperating with the first screw rod, and a rotating handle is connected to the side wall of the upper support rod. Through the above technical scheme, the lower support piece is used for being in contact with the bottom of a dug hole, the upper support piece is used for being in contact with the top of the dug hole, then the position of the upper support rod relative to the lower support rod is adjusted through cooperation of the first screw rod and the first screw hole, and thus the support on the hole is facilitated, the height of the temporary support structure is adjusted through cooperation of the first screw rod and the first screw hole, and thus different excavation depths are adapted, and the construction efficiency is improved under the premise of guaranteeing construction safety.

Description

Technical Field

[0001] This application relates to the field of subway construction technology, and in particular to the temporary support structure for the bottom longitudinal beam of the subway upper guide tunnel. Background Technology

[0002] During subway station construction, tunneling is generally required. To prevent collapses and other issues during the tunneling process, temporary support structures are needed.

[0003] However, during tunneling, the excavation depth is often not reached in one go, but rather in multiple stages. Each time a new temporary support structure is excavated, it needs to be reinstalled, and the previously installed temporary support structure also needs to be dismantled, resulting in low construction efficiency. Summary of the Invention

[0004] The purpose of this application is to provide a temporary support structure for the bottom longitudinal beam of the subway tunnel, so as to improve the problem that the existing temporary support structure in the process of tunnel excavation is difficult to adapt to the temporary support needs at the same location and different depths.

[0005] The temporary support structure for the bottom longitudinal beam of the subway upper guide tunnel provided in this application adopts the following technical solution: The temporary support structure for the bottom longitudinal beam of the subway upper guide tunnel includes a lower support rod and an upper support rod. The bottom of the lower support rod is provided with a lower support member, the top of the upper support rod is provided with an upper support member, the bottom of the upper support rod is provided with a first screw rod, the top of the lower support rod is provided with a first screw hole for cooperating with the first screw rod, and a rotating handle is connected to the side wall of the upper support rod.

[0006] By adopting the above technical solution, the lower support member is used to contact the bottom of the excavated pit, and the upper support member is used to contact the top of the excavated pit. Then, by cooperating with the first screw and the first screw hole, the position of the upper support rod relative to the lower support rod is adjusted, thereby facilitating the support of the pit. The overall height of the temporary support structure is adjusted by cooperating with the first screw and the first screw hole, thereby adapting to different excavation depths and improving construction efficiency while ensuring construction safety.

[0007] Optionally, a reinforcing rod is provided between the upper support rod and the lower support rod. The top of the reinforcing rod is provided with a second screw hole that mates with the first screw, and the bottom of the reinforcing rod is provided with a second screw that mates with the first screw hole.

[0008] The above technical solution enhances the height adjustment range of the temporary support structure by using reinforcing rods, thereby further improving the versatility of the temporary support structure.

[0009] Optionally, multiple reinforcing rods are provided along the axial direction of the upper support rod, and the multiple reinforcing rods cooperate with each other.

[0010] Through the above technical solution, the number of reinforcing rods can be stacked according to actual needs, further improving the height adjustment range of the temporary support structure.

[0011] Optionally, the second screw has a locking hole on its side wall, and the lower support rod has a third screw hole on its side wall. When the bottom of the reinforcing rod is in contact with the top of the lower support rod, the third screw hole is coaxial with the locking hole. The locking screw is internally threaded into the third screw hole, and the head of the locking bolt is inserted into the locking hole.

[0012] The above technical solution improves the reliability and stability of the connection between the reinforcing rod and the lower support rod by using the locking bolts, locking holes, and third screw holes.

[0013] Optionally, a telescopic rod is hinged to the side wall of the lower support rod, and the other end of the telescopic rod is connected to a clamp connector, which is used to connect to another adjacent lower support rod.

[0014] The above technical solution uses the expansion joint and clamp connector to connect adjacent lower support rods, thereby improving the overall stability of multiple temporary support structures and thus enhancing the reliability of the pit support.

[0015] Optionally, the clamp connector includes a connecting seat and a connecting strap. The connecting seat has a connecting groove. One end of the connecting strap is connected to the connecting seat, and the other end passes through the connecting groove after going around a lower support rod. The side wall of the connecting groove is provided with a fixing member for fixing the connecting strap.

[0016] By adopting the above technical solution, the lower support rod is clamped by a connecting strap, and then the end of the connecting strap away from the connecting seat is fixed to the connecting seat by a fastener, thereby realizing the connection between the connecting seat and the lower support rod.

[0017] Optionally, the fixing component includes a locking block, a pull rod, and a compression spring. The side wall of the connecting groove is provided with a sliding groove, the locking block slides in the sliding groove, the pull rod is connected to the locking block, and the end of the pull rod away from the locking block extends out of the connecting seat. The compression spring is located in the sliding groove, one end of the compression spring abuts against the locking block, and the other end abuts against the bottom of the sliding groove. The side wall of the connecting strip is provided with several serrations, and the locking block is used to lock between adjacent serrations.

[0018] By adopting the above technical solution, the pressure is applied to the locking block by the compression spring, so that the locking block can be locked between adjacent saw teeth, thereby preventing the connecting belt from loosening. The pull rod passes through the connecting seat, making it easy for the operator to pull the pull rod to loosen the connecting belt.

[0019] Optionally, the telescopic rod includes a sleeve and a shaft. One end of the shaft is inserted into the sleeve. The end of the sleeve for inserting the shaft is threaded with a tightening sleeve located outside the shaft. The end of the sleeve for inserting the shaft has an opening groove, and multiple opening grooves are provided along the circumference of the sleeve.

[0020] The above technical solution allows for the tightening and loosening of the sleeve rod and shaft rod by rotating the tightening sleeve, which facilitates the relative fixing of the sleeve rod and shaft rod after the positions of the shaft rod and sleeve rod have been adjusted.

[0021] Optionally, the lower support member includes multiple clamping plates, which are arranged in a circumferential array along the lower support rod, and each clamping plate is connected to the lower support rod.

[0022] By adopting the above technical solution, the clamping plate can be easily inserted into the soil, thereby improving the stability of the lower support rod.

[0023] Optionally, the upper support includes a support plate and support blocks. The support plate is rotatably connected to the upper strut, and four support blocks are provided, located at the four corners of the support plate.

[0024] By adopting the above technical solution, the support plate can easily support the top of the pit, while the support block can be easily inserted into the soil at the top of the pit to ensure the stability of the upper support rod.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The lower support member is used to contact the bottom of the excavated pit, and the upper support member is used to contact the top of the excavated pit. Then, by cooperating with the first screw and the first screw hole, the position of the upper support rod relative to the lower support rod is adjusted, thereby facilitating the support of the pit. The overall height of the temporary support structure is adjusted by cooperating with the first screw and the first screw hole, thereby adapting to different excavation depths and improving construction efficiency while ensuring construction safety. 2. By using reinforcing rods to increase the height adjustment range of the temporary support structure, the versatility of the temporary support structure is further improved; 3. By using the expansion joint and clamp connector, adjacent lower support rods are connected, thereby improving the overall stability of multiple temporary support structures and thus enhancing the reliability of the pit support. Attached Figure Description

[0026] Figure 1 This is a schematic diagram illustrating the temporary support structure of the longitudinal beam at the bottom of the subway tunnel in this invention.

[0027] Figure 2 This is a schematic diagram illustrating the structure of the clamping bolt in this invention.

[0028] Figure 3This is a schematic diagram illustrating the structure of the connector in this invention.

[0029] In the diagram, 5 is the lower support rod; 51 is the clamping plate; 52 is the first screw hole; 53 is the third screw hole; 54 is the telescopic rod; 541 is the sleeve rod; 5411 is the opening slot; 5412 is the tightening sleeve; 542 is the shaft; 543 is the connecting seat; 544 is the connecting belt; 5441 is the serration; 545 is the connecting groove; 5451 is the sliding groove; 546 is the clamping block; 547 is the pull rod; 548 is the compression spring; 55 is the clamping bolt; 6 is the upper support rod; 61 is the support plate; 611 is the support block; 62 is the first screw; 63 is the rotating handle; 7 is the reinforcing rod; 71 is the second screw; 72 is the second screw hole; and 73 is the clamping hole. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] Example 1 Firstly, this application discloses the temporary support structure for the longitudinal beam at the bottom of the subway tunnel.

[0033] The temporary support structure for the longitudinal beams at the bottom of the subway tunnel is referenced. Figures 1 to 3The structure includes a lower support rod 5 and an upper support rod 6. The lower support rod 5 has a lower support member at its bottom, and the upper support rod 6 has an upper support member at its top. The lower support rod 6 has a first screw rod 62 at its bottom, and the lower support rod 5 has a first screw hole 52 at its top for engaging with the first screw rod 62. A rotating handle 63 is connected to the side wall of the upper support rod 6. The lower support member is used to contact the bottom of the excavated pit, and the upper support member is used to contact the top of the excavated pit. Then, by cooperating with the first screw rod 62 and the first screw hole 52, the position of the upper support rod 6 relative to the lower support rod 5 can be adjusted, thereby facilitating the support of the pit. The overall height of the temporary support structure can be adjusted by cooperating with the first screw rod 62 and the first screw hole 52, thereby adapting to different excavation depths and improving construction efficiency while ensuring construction safety.

[0034] Specifically, the lower support includes multiple clamping plates 51, which are arranged in a circumferential array along the lower support rod 5, and all clamping plates 51 are fixedly connected to the lower support rod 5. During construction, the clamping plates 51 facilitate insertion into the soil, thereby improving the stability of the lower support rod.

[0035] More specifically, the upper support includes a support plate 61 and support blocks 611 fixedly connected to the support plate 61. The support plate 61 is rotatably connected to the upper support rod 6. There are four support blocks 611, located at the four corners of the support plate 61. During construction, the support plate 61 facilitates the support of the top of the pit, while the support blocks 611 are easily inserted into the soil at the top of the pit to ensure the stability of the upper support rod.

[0036] A reinforcing rod 7 is provided between the upper support rod 6 and the lower support rod 5. The top of the reinforcing rod 7 has a second screw hole 72 that mates with the first screw 62, and the bottom of the reinforcing rod 7 has a second screw 71 that mates with the first screw hole 52. The reinforcing rod 7 increases the height adjustment range of the temporary support structure, thereby further improving the versatility of the temporary support structure.

[0037] Multiple reinforcing rods 7 can be provided along the axial direction of the upper support rod 6, and the multiple reinforcing rods 7 can cooperate with each other. That is to say, the number of reinforcing rods 7 can be stacked according to actual needs, further improving the height adjustment range of the temporary support structure.

[0038] Specifically, the second screw 71 has a locking hole 73 on its side wall, and the lower support rod 5 has a third screw hole 53 on its side wall. When the bottom of the reinforcing rod 7 is in contact with the top of the lower support rod 5, the third screw hole 53 and the locking hole 73 are coaxial. A locking bolt is threaded into the third screw hole 53, and the head of the locking bolt is inserted into the locking hole 73. Through the cooperation of the locking bolt with the locking hole 73 and the third screw hole 53, the reliability and stability of the connection between the reinforcing rod 7 and the lower support rod 5 are improved.

[0039] In addition, a telescopic rod 54 is hinged to the side wall of the lower support rod 5, and the other end of the telescopic rod 54 is connected to a clamp connector, which is used to connect with another adjacent lower support rod 5. By cooperating with the telescopic rod and the clamp connector, adjacent lower support rods 5 are connected, thereby improving the overall stability between multiple temporary support structures and thus improving the reliability of the pit support.

[0040] The telescopic rod 54 includes a sleeve rod 541 and a shaft rod 542. One end of the sleeve rod 541 is hinged to the lower support rod, and the other end is used for inserting the shaft rod 542. The end of the shaft rod 542 away from the sleeve rod 541 is connected to a clamp connector. The end of the sleeve rod 541 for inserting the shaft rod 542 is threadedly connected to a tightening sleeve 5412, which is located outside the shaft rod 542. The end of the sleeve rod 541 for inserting the shaft rod 542 has an opening groove 5411, which has multiple opening grooves 5411 along the circumference of the sleeve rod 541. By rotating the tightening sleeve 5412, the sleeve rod 541 and the shaft rod 542 can be tightened and loosened, thus facilitating the relative fixation of the sleeve rod 541 and the shaft rod 542 after the positions of the shaft rod 542 and the sleeve rod 541 have been adjusted.

[0041] The clamp connector includes a connecting seat 543 and a connecting strap 544. The connecting seat 543 is fixedly connected to the shaft 542. The connecting seat 543 has a connecting groove 545. One end of the connecting strap 544 is connected to the connecting seat 543, and the other end passes through the connecting groove 545 after passing over a lower support rod 5. The side wall of the connecting groove 545 is provided with a fixing member for fixing the connecting strap 544. The lower support rod 5 is clamped by the connecting strap 544, and then the end of the connecting strap 544 away from the connecting seat 543 is fixed to the connecting seat 543 by the fixing member, thereby realizing the connection between the connecting seat 543 and the lower support rod 5.

[0042] More specifically, the fastener includes a locking block 546, a pull rod 547, and a compression spring 548. A sliding groove 5451 is provided on the side wall of the connecting groove 545. The locking block 546 slides in the sliding groove 5451. The pull rod 547 is connected to the locking block 546. One end of the pull rod 547 away from the locking block 546 passes through the connecting seat 543. The compression spring 548 is located in the sliding groove 5451. One end of the compression spring 548 abuts against the locking block 546, and the other end abuts against the bottom of the sliding groove 5451. A number of serrations 5441 are provided on the side wall of the connecting band 544. The locking block 546 is used to lock between adjacent serrations 5441. The spring 548 applies pressure to the locking block 546, allowing the locking block 546 to lock between adjacent saw teeth 5441, thereby preventing the connecting belt 544 from loosening. The pull rod 547 extends out of the connecting seat 543, making it easy for the operator to pull the pull rod 547 to loosen the connecting belt 544.

[0043] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A temporary support structure for the longitudinal beam at the bottom of a subway tunnel, characterized in that, It includes a lower support rod (5) and an upper support rod (6). The lower support rod (5) has a lower support member at its bottom and an upper support member at its top. The upper support rod (6) has a first screw rod (62) at its bottom and a first screw hole (52) at its top for engaging with the first screw rod (62). A rotating handle (63) is connected to the side wall of the upper support rod (6).

2. The temporary support structure for the longitudinal beam at the bottom of the subway upper guide tunnel according to claim 1, characterized in that: A reinforcing rod (7) is provided between the upper support rod (6) and the lower support rod (5). The top of the reinforcing rod (7) is provided with a second screw hole (72) that matches the first screw (62), and the bottom of the reinforcing rod (7) is provided with a second screw (71) that matches the first screw hole (52).

3. The temporary support structure for the longitudinal beam at the bottom of the subway upper guide tunnel according to claim 2, characterized in that: Multiple reinforcing rods (7) are provided along the axial direction of the upper support rod (6), and the multiple reinforcing rods (7) cooperate with each other.

4. The temporary support structure for the longitudinal beam at the bottom of the subway upper guide tunnel according to claim 2, characterized in that: The second screw (71) has a locking hole (73) on its side wall, and the lower support rod (5) has a third screw hole (53) on its side wall. When the bottom of the reinforcing rod (7) is in contact with the top of the lower support rod (5), the third screw hole (53) is coaxial with the locking hole (73). The locking screw is threaded into the third screw hole (53), and the head of the locking screw is inserted into the locking hole (73).

5. The temporary support structure for the bottom longitudinal beam of the subway upper guide tunnel according to claim 1, characterized in that: A telescopic rod (54) is hinged to the side wall of the lower support rod (5), and a clamp connector is connected to the other end of the telescopic rod (54). The clamp connector is used to connect to another adjacent lower support rod (5).

6. The temporary support structure for the bottom longitudinal beam of the subway upper guide tunnel according to claim 5, characterized in that: The clamp connector includes a connecting seat (543) and a connecting strap (544). The connecting seat (543) is provided with a connecting groove (545). One end of the connecting strap (544) is connected to the connecting seat (543), and the other end passes through the connecting groove (545) after passing around a lower support rod (5). The side wall of the connecting groove (545) is provided with a fixing member for fixing the connecting strap (544).

7. The temporary support structure for the longitudinal beam at the bottom of the subway upper guide tunnel according to claim 6, characterized in that: The fastener includes a locking block (546), a pull rod (547), and a compression spring (548). The side wall of the connecting groove (545) is provided with a sliding groove (5451). The locking block (546) slides in the sliding groove (5451). The pull rod (547) is connected to the locking block (546). One end of the pull rod (547) away from the locking block (546) passes through the connecting seat (543). The compression spring (548) is located in the sliding groove (5451). One end of the compression spring (548) abuts against the locking block (546), and the other end abuts against the bottom of the sliding groove (5451). The side wall of the connecting band (544) is provided with several serrations (5441). The locking block (546) is used to lock between adjacent serrations (5441).

8. The temporary support structure for the bottom longitudinal beam of the subway upper guide tunnel according to claim 7, characterized in that: The telescopic rod (54) includes a sleeve rod (541) and a shaft rod (542). One end of the shaft rod (542) is inserted into the sleeve rod (541). The sleeve rod (541) for inserting the shaft rod (542) is threadedly connected to a tightening sleeve (5412). The tightening sleeve (5412) is located outside the shaft rod (542). The sleeve rod (541) for inserting the shaft rod (542) has an opening groove (5411). Multiple opening grooves (5411) are provided along the circumference of the sleeve rod (541).

9. The temporary support structure for the bottom longitudinal beam of the subway upper guide tunnel according to claim 1, characterized in that: The lower support includes multiple clamping plates (51), which are arranged in a circumferential array along the lower support rod (5), and each of the multiple clamping plates (51) is connected to the lower support rod (5).

10. The temporary support structure for the bottom longitudinal beam of the subway upper guide tunnel according to claim 1, characterized in that: The upper support includes a support plate (61) and support blocks (611). The support plate (61) is rotatably connected to the upper support rod (6). There are four support blocks (611), which are located at the four corners of the support plate (61).

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