A two-lining trolley free-drilling support device suitable for special-shaped sections

Abstract

The utility model discloses an adaptation special section's two lining trolley exempt from punching support device relates to tunnel construction technical field, including bottom fixed frame, support subassembly, reinforcing component and monitoring component, the both sides of bottom fixed frame top respectively fixed mounting has two groups of hydraulic cylinder, the top of bottom fixed frame is provided with the bracket. This adaptation special section's two lining trolley exempt from punching support device is through being provided with support subassembly, when using, arc rib beam together with central fixed seat welds in template bottom, through hoisting equipment and hoists it to install, the special socket of central fixed seat bottom inserts into the slot in the top of bottom fixed seat, forms fixed through the power magnetism of first electromagnet and is absorbed, is relatively quick, side support seat presses in the both sides of bracket, shares the pressure of arc rib beam, prevents its deformation, realized the function of exempt from punching, easy installation, solves the drilling damage template, and the general performance of custom support frame is poor and is troublesome to replace.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically to a hole-free support device for a secondary lining trolley adapted to irregular cross-sections. Background Technology

[0002] When tunnels and underground engineering projects traverse complex geological conditions or structural connections, it is often necessary to construct irregular cross-section structures such as variable cross-sections, enlarged cross-sections, and intersections. As a permanent support system, the construction quality of secondary lining directly affects the long-term stability and safety of the project. The secondary lining trolley is the core equipment for completing the pouring of secondary lining concrete; the stability and adaptability of its support system are crucial to ensuring accurate lining contours and dense, crack-free concrete.

[0003] In existing technologies, secondary lining trolleys, especially those used for irregular cross-sections, primarily rely on two main types of technologies for formwork support: the most traditional method is the perforated screw rod support system. Holes are pre-drilled on the trolley's steel formwork or determined on-site, and then anti-buoyancy screw rods or support screw rods are inserted. One end of the screw rod rests against the initial tunnel support rock wall or the completed lining surface, while the other end is secured to the formwork back rib with a nut, thus resisting the upward buoyancy and lateral pressure generated during concrete pouring. This method causes irreversible damage to the formwork through drilling, compromising its integrity, shortening its service life, and making the drilled holes prone to grout leakage points during pouring, affecting the appearance quality of the lining.

[0004] The second type is a customized rigid support frame. For specific irregular cross-sections, special support trusses and formwork are usually designed and manufactured. Although this method has high support strength, it has two major drawbacks. First, it has extremely poor versatility. One set of equipment can only be used for a specific height cross-section, requiring complex on-site modifications and reinforcements, which is time-consuming and labor-intensive. Second, the formwork replacement is also quite troublesome.

[0005] Now, a novel, non-drilling support device for a secondary lining trolley adapted to irregular cross-sections is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a non-drilling support device for a secondary lining trolley that is adapted to irregular cross-sections, so as to solve the problems mentioned in the background art, such as drilling damaging the template and the poor versatility and troublesome replacement of customized support frames.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a non-drilling support device for a secondary lining trolley adapted to irregular cross-sections, comprising a bottom fixing frame, a support assembly, a reinforcement assembly, and a monitoring assembly. Two sets of hydraulic cylinders are fixedly installed on both sides of the top of the bottom fixing frame, and a support frame is provided above the bottom fixing frame.

[0008] The support assembly includes a bottom fixing seat, which is welded and fixed to the top of the support frame. The top of the bottom fixing seat has a slot, and three sets of first electromagnets are fixedly installed at the bottom of the slot. An arc-shaped rib beam is provided above the bottom fixing seat. A central fixing seat is welded and fixed to the top of the arc-shaped rib beam. A special-shaped socket is bolted to the bottom of the central fixing seat. Side support seats are welded and fixed to both sides of the arc-shaped rib beam. The side support seats have lifting holes inside.

[0009] As a further technical solution of this utility model, the vertical center lines of the support frame and the bottom fixed seat coincide, and the output end of the hydraulic cylinder is fixedly connected to the bottom end of the support frame.

[0010] As a further technical solution of this utility model, the external shape and size of the irregular socket are adapted to the internal shape and size of the slot, and the irregular socket can slide up and down along the inside of the slot.

[0011] As a further technical solution of this utility model, the shape and size of the side of the side support seat are adapted to the shape and size of the side of the support frame, and the side support seats are symmetrically distributed about the vertical center line of the arc-shaped rib beam.

[0012] As a further technical solution of this utility model, the reinforcing component includes two sets of concave limiting frames, which are fixedly connected to the bottom end of the support frame. Two sets of electromagnet fixing seats are fixedly connected to the front and rear ends of the bottom fixing frame, and second electromagnets are fixedly installed on both sides inside the electromagnet fixing seats. The concave limiting frames can slide up and down along the inside of the electromagnet fixing seats, and the second electromagnets and the sides of the concave limiting frames are in contact.

[0013] As a further technical solution of this utility model, the monitoring component includes a sensor protective shell, which is fixedly connected to the middle position of the bottom end of the support frame. An tilt sensor is fixedly installed at the top inside the sensor protective shell, and the vertical center lines of the support frame and the tilt sensor coincide.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the non-drilling support device for the secondary lining trolley adapted to irregular cross sections not only realizes the functions of non-drilling and easy installation, but also realizes the function of auxiliary locking support and the function of template levelness detection. (1) By setting up a support component, when in use, the bottom fixing frame is fixed to the top of the secondary lining trolley by bolts. According to the construction needs of the corresponding section, the appropriate arched formwork is selected for modification. The arc rib beam and the central fixing seat are welded together to the bottom of the formwork. The formwork is lifted and installed by hoisting equipment. The irregular socket at the bottom of the central fixing seat is inserted into the slot at the top of the bottom fixing seat. The first electromagnet is used to form a fixation by electromagnetic attraction, which is relatively quick. The side support seat presses on both sides of the support frame to share the pressure of the arc rib beam and prevent it from deforming. According to the construction height requirements of the corresponding section, the hydraulic cylinder extends or retracts, driving the overall formwork to move up and down. It can adapt to the construction needs of different heights and realize the functions of no drilling and easy installation. (2) By setting up a reinforcing component, when in use, the support frame bears the weight of the entire template. As the support frame rises to the position, the concave limit frame rises synchronously. The second electromagnets on both sides inside the electromagnet fixing seat are energized and magnetized, forming an adsorption fixation on the concave limit frame. The height of the concave limit frame is fixed, which can share the pressure of the hydraulic cylinder. It will not fall directly when the hydraulic cylinder bursts, thus realizing the function of auxiliary locking support. (3) By setting up monitoring components, when in use, the support frame carries the entire template. When the template body tilts, the tilt sensor inside the sensor protective shell can quickly capture the tilt angle change and feed it back to the main control console of the secondary lining trolley. Construction personnel can intervene early, realizing the function of template level detection. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a top view of the bottom fixing base of this utility model; Figure 3 This is a front view schematic diagram of the central fixing base of this utility model; Figure 4 This is a side view of the concave limiting frame of this utility model. Figure 5 This is a top-view enlarged structural diagram of the electromagnet fixing base of this utility model; Figure 6 This is a partial cross-sectional view of the support frame of this utility model from below.

[0016] In the diagram: 1. Bottom fixing frame; 2. Hydraulic cylinder; 3. Support frame; 4. Support assembly; 401. Bottom fixing seat; 402. Slot; 403. First electromagnet; 404. Arc-shaped rib; 405. Central fixing seat; 406. Irregular socket; 407. Side support seat; 408. Lifting hole; 5. Reinforcing assembly; 501. Concave limiting frame; 502. Electromagnet fixing seat; 503. Second electromagnet; 6. Monitoring assembly; 601. Sensor protective shell; 602. Tilt sensor. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example: Please refer to Figure 1-6 A non-drilling support device for a secondary lining trolley adapted to irregular cross sections includes a bottom fixing frame 1, a support component 4, a reinforcement component 5 and a monitoring component 6. Two sets of hydraulic cylinders 2 are fixedly installed on both sides of the top of the bottom fixing frame 1, and a support frame 3 is provided above the bottom fixing frame 1. Please see Figure 1-6 A non-drilling support device for a secondary lining trolley adapted to irregular cross-sections also includes a support component 4. The support component 4 includes a bottom fixing seat 401, which is welded and fixed to the top of the support frame 3. The top of the bottom fixing seat 401 has a slot 402. Three sets of first electromagnets 403 are fixedly installed at the bottom of the slot 402. An arc-shaped rib beam 404 is provided above the bottom fixing seat 401. A central fixing seat 405 is welded and fixed to the top of the arc-shaped rib beam 404. An irregular socket 406 is bolted to the bottom of the central fixing seat 405. Side support seats 407 are welded and fixed to both sides of the arc-shaped rib beam 404. The side support seats 407 have lifting holes 408 inside. The vertical center lines of the support frame 3 and the bottom fixing seat 401 coincide. The output end of the hydraulic cylinder 2 is fixedly connected to the bottom end of the support frame 3. The external shape and size of the irregular socket 406 are adapted to the internal shape and size of the slot 402. The irregular socket 406 can slide up and down along the inside of the slot 402. The side shape and size of the side support seat 407 are adapted to the side shape and size of the support frame 3. The side support seat 407 is symmetrically distributed about the vertical center line of the arc rib beam 404, which facilitates the modification of existing templates to adapt to irregular cross sections and is simple to install. Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, the arc-shaped rib beam 404, together with the central fixing seat 405, is welded to the bottom of the template. It is then hoisted and installed using hoisting equipment. The irregularly shaped socket 406 at the bottom of the central fixing seat 405 is inserted into the slot 402 at the top of the bottom fixing seat 401. It is fixed by the electromagnetic attraction of the first electromagnet 403, which is relatively quick. The side support seats 407 press on both sides of the support frame 3 to share the pressure of the arc-shaped rib beam 404 and prevent it from deforming. According to the construction height requirements of the corresponding section, the hydraulic cylinder 2 extends or retracts, driving the template to move up and down as a whole, which can adapt to the construction needs of different heights.

[0019] The reinforcement component 5 includes two sets of concave limiting frames 501, which are fixedly connected to the bottom end of the support frame 3. Two sets of electromagnet fixing seats 502 are fixedly connected to the front and rear ends of the bottom fixing frame 1 respectively. Second electromagnets 503 are fixedly installed on both sides inside the electromagnet fixing seat 502. The concave limiting frame 501 can slide up and down along the inside of the electromagnet fixing seat 502. The second electromagnet 503 and the side of the concave limiting frame 501 are in contact and are magnetically locked for auxiliary support. Specifically, such as Figure 1 , Figure 4 and Figure 5 As shown, as the support frame 3 rises to its position, the concave limiting frame 501 rises synchronously. The second electromagnets 503 on both sides inside the electromagnet fixing seat 502 are energized and magnetized, forming an adsorption fixation on the concave limiting frame 501. The height of the concave limiting frame 501 is thus fixed, which can share the pressure of the hydraulic cylinder 2 and prevent it from falling directly when the hydraulic cylinder 2 bursts.

[0020] The monitoring component 6 includes a sensor protective shell 601, which is fixedly connected to the middle position of the bottom end of the support frame 3. An inclination sensor 602 is fixedly installed at the top inside the sensor protective shell 601. The vertical center lines of the support frame 3 and the inclination sensor 602 coincide, which facilitates monitoring the tilt of the template. Specifically, such as Figure 1 and Figure 6 As shown, when the template body tilts, the tilt sensor 602 inside the sensor protective shell 601 can quickly capture the tilt angle change and feed it back to the main control console of the secondary lining trolley.

[0021] Working principle: When using this utility model, firstly, the bottom fixing frame 1 is fixed to the top of the secondary lining trolley with bolts. According to the construction requirements of the corresponding section, a suitable arched formwork is selected and modified. The arc-shaped rib beam 404, together with the central fixing seat 405, is welded to the bottom of the formwork. It is then hoisted and installed using hoisting equipment. The irregular socket 406 at the bottom of the central fixing seat 405 is inserted into the slot 402 at the top of the bottom fixing seat 401. It is fixed by the electromagnetic attraction of the first electromagnet 403, which is relatively quick. The side support seat 407 presses on both sides of the support frame 3 to share the pressure of the arc-shaped rib beam 404 and prevent it from deforming. According to the construction height requirements of the corresponding section, the hydraulic cylinder 2 extends or retracts, driving the entire formwork to move up and down, which can adapt to the construction needs of different heights. The support frame 3 bears the weight of the entire template. As the support frame 3 rises to its position, the concave limiting frame 501 rises simultaneously. The second electromagnets 503 on both sides inside the electromagnet fixing seat 502 are energized and magnetized, attracting and fixing the concave limiting frame 501. The height of the concave limiting frame 501 is thus fixed, which can share the pressure of the hydraulic cylinder 2 and prevent it from falling directly in the event of a cylinder failure. The support frame 3 bears the entire template. When the template body tilts, the tilt sensor 602 inside the sensor protective shell 601 can quickly detect the tilt angle change and feed it back to the main control console of the secondary lining trolley, allowing construction personnel to intervene as early as possible.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A non-drilling support device for a secondary lining trolley adapted to irregular cross-sections, comprising a bottom fixing frame (1), a support assembly (4), a reinforcement assembly (5), and a monitoring assembly (6), characterized in that: Two sets of hydraulic cylinders (2) are fixedly installed on both sides of the top of the bottom fixing frame (1), and a support frame (3) is provided above the bottom fixing frame (1). The support assembly (4) includes a bottom fixing seat (401), which is welded and fixed to the top of the support frame (3). The top of the bottom fixing seat (401) is provided with a slot (402). Three sets of first electromagnets (403) are fixedly installed at the bottom of the slot (402). An arc-shaped rib beam (404) is provided above the bottom fixing seat (401). A central fixing seat (405) is welded and fixed to the top of the arc-shaped rib beam (404). A special-shaped socket (406) is bolted to the bottom of the central fixing seat (405). Side support seats (407) are welded and fixed to both sides of the arc-shaped rib beam (404). A lifting hole (408) is provided inside the side support seat (407).

2. The non-drilling support device for a secondary lining trolley adapted to irregular cross-sections according to claim 1, characterized in that: The vertical center lines of the support frame (3) and the bottom fixing seat (401) coincide, and the output end of the hydraulic cylinder (2) is fixedly connected to the bottom end of the support frame (3).

3. The non-drilling support device for a secondary lining trolley adapted to irregular cross-sections according to claim 1, characterized in that: The shape and size of the irregular socket (406) are adapted to the shape and size of the slot (402), and the irregular socket (406) can slide up and down along the inside of the slot (402).

4. The non-drilling support device for a secondary lining trolley adapted to irregular cross-sections according to claim 1, characterized in that: The shape and size of the side of the side support (407) are adapted to the shape and size of the side of the support frame (3), and the side support (407) is symmetrically distributed about the vertical center line of the arc-shaped rib beam (404).

5. The non-drilling support device for a secondary lining trolley adapted to irregular cross-sections according to claim 1, characterized in that: The reinforcement component (5) includes two sets of concave limiting frames (501). The two sets of concave limiting frames (501) are fixedly connected to the bottom end of the support frame (3). The front and rear ends of the bottom fixing frame (1) are respectively fixedly connected to two sets of electromagnet fixing seats (502). The two sides inside the electromagnet fixing seat (502) are respectively fixedly installed with second electromagnets (503). The concave limiting frame (501) can slide up and down along the inside of the electromagnet fixing seat (502). The second electromagnet (503) and the side of the concave limiting frame (501) are in contact.

6. The non-drilling support device for a secondary lining trolley adapted to irregular cross-sections according to claim 1, characterized in that: The monitoring component (6) includes a sensor protective shell (601), which is fixedly connected to the middle position of the bottom end of the support frame (3). An inclination sensor (602) is fixedly installed at the top inside the sensor protective shell (601). The vertical center lines of the support frame (3) and the inclination sensor (602) coincide.

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