Supporting base of secondary lining trolley frame structure

Abstract

A supporting base of a secondary lining trolley frame structure comprises supporting columns arranged on the two sides, a U-shaped pedestal for bottom supporting and an upper longitudinal beam, the upper longitudinal beam is connected to the upper portions of the supporting columns, and a cross beam arranged in the width direction of a trolley is not arranged on the frame structure; the U-shaped pedestal comprises two vertical supporting devices on the two sides and a lower frame net rack, and the lower frame net rack and the vertical supporting devices are connected through a frame connecting mechanism. The vertical supporting device comprises a middle longitudinal beam, a lower longitudinal beam capable of vertically sliding relative to the middle longitudinal beam and a supporting oil cylinder connected with the middle longitudinal beam and the lower longitudinal beam. The secondary lining trolley is designed to be of a large-clearance structure without a cross beam and an operation platform on the premise that the strength is guaranteed, concrete pouring is free of interference, and the passing area is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel machinery, and in particular relates to a supporting base of a secondary lining trolley frame structure. Background Art

[0002] With the continuous development of transportation infrastructure, the number of highway and railway tunnels being built continues to increase, and tunnel construction technology is also constantly improving. To improve tunnel stability and safety, the quality requirements for tunnel secondary lining (abbreviated as "secondary lining") construction are becoming increasingly stringent. The secondary lining must possess sufficient strength, durability, and waterproof properties, which are directly related to the overall quality and service life of the tunnel. The construction precision and quality of the secondary lining trolley, a key piece of equipment in secondary lining construction, have a significant impact on the overall quality of the tunnel. However, the traditional gantry support structure of the secondary lining trolley has many problems in practical application, which limit its widespread and efficient use in modern tunnel construction.

[0003] The overall structure of the traditional secondary lining trolley is relatively complex, such as Figure 1 As shown, the typical support structure utilizes a gantry, coupled with extensive surrounding scaffolding. This results in a complex structure that is difficult to disassemble and assemble. Furthermore, the presence of the scaffolding restricts the access of other construction vehicles and the construction process within the secondary lining trolley. Traditional gantry support structures also have high maintenance costs. During construction, the support mechanism is often subjected to heavy loads and vibrations, which can easily lead to component damage or deformation. Due to the complex structure of traditional gantry structures, maintenance and repair require specialized technicians and equipment, further increasing the difficulty and cost of maintenance. Utility Model Content

[0004] The utility model provides a supporting base of a secondary lining trolley frame structure, so as to solve the problem of complex structure of the secondary lining trolley during use.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A support base for a secondary lining trolley frame structure, comprising support columns arranged on both sides, a U-shaped pedestal for bottom support, and an upper longitudinal beam, wherein the upper longitudinal beam is connected to the upper portion of the support columns, and the frame structure is not provided with a cross beam arranged along the width direction of the trolley;

[0007] The U-shaped pedestal includes two vertical support devices on both sides and a lower frame grid, and the lower frame grid and the vertical support devices are connected by a frame connection mechanism;

[0008] The vertical support device includes a middle longitudinal beam, a lower longitudinal beam that can slide vertically relative to the middle longitudinal beam, and a supporting oil cylinder connecting the middle longitudinal beam and the lower longitudinal beam. The middle longitudinal beam and the lower longitudinal beam are connected by a vertical sliding device.

[0009] Preferably, the vertical sliding device includes a plurality of guide cylinders arranged at the bottom of the middle longitudinal beam and fixedly connected to the middle longitudinal beam, and a plurality of guide square openings arranged at the top of the lower longitudinal beam. The shape of the guide square openings is consistent with the shape of the guide cylinders, and the guide cylinders can slide freely in the guide square openings.

[0010] Preferably, the middle longitudinal beam is arranged obliquely above the lower frame grid.

[0011] Preferably, both ends of each of the central longitudinal beams are provided with a jacking and lateral movement support device.

[0012] Preferably, the jacking and transverse movement support device includes a vertical jacking cylinder hinged to the middle longitudinal beam, a jacking and transverse movement support hinged to the jacking cylinder, and a transverse movement device fixed to the bottom of the jacking and transverse movement support.

[0013] Preferably, the transverse movement device includes a transverse movement mechanism and a transverse movement base, and the transverse movement mechanism and the transverse movement base are connected through a horizontal linear power device.

[0014] Preferably, the lifting and lateral movement support device includes a lifting and lateral movement shell for guiding, which is arranged outside the lifting and lateral movement support, and the lifting and lateral movement shell is fixedly connected to the lower longitudinal beam.

[0015] Preferably, a longitudinal beam support is provided below the lower longitudinal beam, and a vertical telescopic support device is provided at the bottom of the longitudinal beam support.

[0016] Preferably, the vertical telescopic support device consists of a lead screw and support feet.

[0017] Preferably, mesh holes are left on the lower frame grid, which can be used to pass through the supporting device supporting the vehicle platform.

[0018] The utility model can achieve the following beneficial effects:

[0019] (1) The biggest advantage of this design is that it reduces the number of crossbeam components and their complex connection points in the traditional gantry, thereby reducing production costs and assembly difficulty. The simplification of the support structure makes the secondary lining trolley not only more efficient in the production and assembly stages, but also more convenient to operate and maintain in later use. By adopting a modular design, the overall connection between the lower frame grid and the support mechanism and template makes the trolley more versatile and flexible. Whether in different tunnel environments or in different construction tasks, the trolley can be quickly adapted and put into use. In addition, the reduced components and connection points also effectively reduce the failure rate and maintenance difficulty, which significantly improves the reliability of the equipment.

[0020] (2) By optimizing the frame structure, the design not only ensures the strength and stability of the support mechanism, but also increases the traffic area, providing sufficient space for large construction machinery such as pump trucks and vibrators to pass smoothly. This design effectively reduces the need for manual operation, allowing subsequent grouting and vibration operations to be completed through mechanization, improving construction efficiency and reducing errors caused by human factors. Fully mechanized operations also make the construction process more efficient, shorten construction time, and reduce the labor intensity of on-site workers, ensuring the safety and quality of operations.

[0021] (3) This design is optimized based on the traditional trolley frame. It adopts a lower frame grid with multiple mesh holes on it to provide support for the trolley bridge. Under this design, the trolley bridge is suspended on the lower frame grid and is not directly connected to the trolley itself. This effectively prevents the vibration of the trolley bridge from being transmitted to the formwork through the trolley, thereby affecting the quality of the secondary lining construction. Since the trolley bridge is independently supported and suspended, the vibration is effectively isolated, greatly improving the accuracy of grouting and vibration operations, and ensuring the quality of the tunnel lining. At the same time, the grid design not only ensures the stability of the support, but also improves the bearing capacity of the trolley bridge, so that it can withstand loads in different construction environments, providing greater safety guarantees for subsequent construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the overall structural diagram of the secondary lining trolley in the prior art;

[0023] Figure 2 This is the overall structural diagram of the secondary lining trolley frame structure of the present utility model;

[0024] Figure 3 It is an isometric view of the support base of the present invention;

[0025] Figure 4 This is a structural diagram of the support base of the utility model;

[0026] Figure 5 This is a left side view of the support base of the utility model;

[0027] Figure 6 This is a left side view of the support base of the utility model;

[0028] Figure 7 This is a structural diagram of the lower longitudinal beam of the present utility model;

[0029] Figure 8 for Figure 4 Enlarged view of point A in the middle;

[0030] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0031] 1. Upper longitudinal beam; 2. Support column; 3. Support column flange plate; 4. Middle longitudinal beam; 5. Middle longitudinal beam end flange plate; 6. Middle longitudinal beam end ear plate; 7. Middle longitudinal beam end reinforcement rib; 8. Middle longitudinal beam side flange plate; 9. Middle longitudinal beam side ear plate; 10. Middle longitudinal beam guide flange plate; 11. Guide flange plate; 12. Guide cylinder; 13. Guide mechanism reinforcement rib; 14. Support cylinder; 15. Retractable and retractable cylinder; 16. Lower longitudinal beam; 17. Lower longitudinal beam flange plate; 18. Support cylinder ear plate; 19. Incoming and outgoing mold cylinder ear plate; 20. Jacking and transverse shifting support device; 21. Longitudinal beam support; 22. Vertical telescopic support device; 23. Lower frame grid; 24. Frame connection mechanism; 25. Lower frame grid foot; 26. Guide square mouth; 27. Top template; 28. Jacking cylinder; 29. ​​Upper end earring; 30. Side template; 31. Jacking and transverse shifting lifting support; 32. Jacking and transverse shifting shell; 33. Transverse shifting mechanism; 34. Transverse shifting base. DETAILED DESCRIPTION

[0032] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0033] like Figure 2-8 As shown, this embodiment discloses a secondary lining trolley frame structure, comprising a formwork and a support base 23. The formwork comprises a top formwork assembly, two side formwork assemblies, and the support base 23. The support base 23 of the secondary lining trolley frame structure comprises support columns 2 arranged on both sides, a U-shaped support base at the bottom, and an upper longitudinal beam 1. The number of support columns 2 on each side is at least two, and may be three or more. The upper longitudinal beam 1 is connected to the support columns 2 above, and the support columns 2 are connected to the support columns 2 via support column flange plates 3.

[0034] The two side template groups are respectively hinged on both sides of the top template group. The side template group includes a plurality of side templates 30 arranged along the length direction of the trolley, and the top template group includes a plurality of top templates 27 arranged along the length direction of the trolley.

[0035] The formwork is pressed onto the upper longitudinal beam 1 in an arc shape, forming a single, integrated structure. The frame structure lacks crossbeams extending across the width of the trolley. Removing these crossbeams reduces structural complexity and improves versatility, making the entire frame more adaptable to various tunnel environments. Furthermore, the frame's access area is increased, allowing large construction machinery to operate via the secondary lining trolley. This allows for greater use of machinery in the secondary lining construction process, replacing manual labor. For example, a boom pump truck can be used for pouring, replacing traditional methods.

[0036] The U-shaped pedestal consists of two vertical support devices on either side and a lower frame grid 23. The lower frame grid 23 and the vertical support devices are connected by a frame connection mechanism 24. This connection, combined with the overall frame structure formed by the upper longitudinal beam 1 and support columns 2, ensures that the trolley maintains stability and structural integrity even when bearing heavy loads. The lower frame grid 23 is supported by lower frame grid footings 25 and connected with bolts and nuts. A simple adjustment of the nuts allows for easy adjustment of the frame height to suit different construction conditions.

[0037] The secondary lining trolley support base moves the overall force center of gravity downward by connecting the lower frame grid 23 with the support mechanisms on both sides. The structure is more stable and has stronger pressure capacity. It can better adapt to these complex construction conditions and ensure the safety and smooth progress of construction.

[0038] The secondary lining trolley's support base has minimal connection points with the formwork, making it more adaptable to tunnels of varying cross-sections. The design of this support mechanism allows for flexible adjustment to varying tunnel cross-sections, enhancing its adaptability and versatility. Furthermore, it reduces construction issues caused by improper connection between the formwork and the support mechanism, improving construction quality and efficiency.

[0039] The vertical support device includes a center longitudinal beam 4, a lower longitudinal beam 16 that can slide vertically relative to the center longitudinal beam 4, and a frame connection mechanism 24 between one side of the lower frame grid 23 and the lower longitudinal beam 16. This welding or bolting method makes the assembly between the lower frame grid 23 and the lower longitudinal beam 16 more stable and facilitates subsequent disassembly and maintenance.

[0040] A center longitudinal beam side flange plate 8 is provided on the outer side surface of the center longitudinal beam 4 , and a center longitudinal beam side ear plate 9 is provided on the center longitudinal beam side flange plate 8 .

[0041] Eight expansion and contraction mold cylinder lugs 19 are installed on the outside of the lower longitudinal beam 16 and secured by welding (bolts). One end of the expansion and contraction mold cylinder 15 is connected to the expansion and contraction mold cylinder lug 19, and the other end is hinged to the side mold. Lower longitudinal beam flange plates 17 are installed at both ends of the lower longitudinal beam 16 and connected by welding or bolts.

[0042] Support cylinders 14 connect the center longitudinal beam 4 and the lower longitudinal beam 16, which are connected by a vertical sliding mechanism. The vertical sliding mechanism allows the U-shaped platform to be flexibly adjusted in the vertical direction, ensuring that the formwork 27 can be stably supported even when the tunnel cross-section size changes, improving construction accuracy and efficiency.

[0043] The vertical sliding device includes a plurality of guide cylinders 12 arranged at the bottom of the middle longitudinal beam 4 and fixedly connected to the middle longitudinal beam 4, and a plurality of guide square openings 26 arranged at the top of the lower longitudinal beam 16. The shape of the guide square openings 26 is consistent with that of the guide cylinders 12, and the guide cylinders 12 can slide freely in the guide square openings 26. Such a design ensures the smoothness of vertical movement by limiting the sliding direction of the lower longitudinal beam 16 and reduces the deviation that may be caused by external forces. In addition, in order to improve the rigidity and stability of the guide device, a guide flange plate 11 is provided at the rear end of the guide cylinder 12 and is reinforced by a guide mechanism reinforcement rib 13 through welding connection. The middle longitudinal beam guide flange plate 10 is provided at the bottom of the middle longitudinal beam 4, and the guide flange plate 11 is connected to the middle longitudinal beam guide flange plate 10 by bolts.

[0044] During the formwork's lifting and retraction processes, the vertical sliding mechanism guides the support mechanism, ensuring accurate movement and enhancing its stability. Furthermore, during tunnel construction, the complex construction environment can present various external interference forces, such as vibration and wind. The guide mechanism effectively resists these external interference forces, ensuring stable operation of the support mechanism.

[0045] The vertical sliding mechanism and the lifting cylinder 28 work together to raise and retract the formwork. While the support cylinder provides the lifting force, the vertical sliding mechanism ensures the formwork's precise trajectory, preventing deviation or tilt. This collaborative approach improves the efficiency and reliability of the support mechanism, ensuring construction quality and safety.

[0046] A longitudinal beam support 21 is located below the lower longitudinal beam 16, and a vertically retractable support device 22 is located below the longitudinal beam support 21. The lower longitudinal beam 16 is located diagonally above the lower frame grid 23. This layout leaves space for the running mechanism to be installed below the lower longitudinal beam 16. Each end of the center longitudinal beam 4 is equipped with a lifting and lateral movement support device 20. This lifting and lateral movement support device 20 not only adjusts the height of the center longitudinal beam 4 but also ensures the precise positioning of the formwork.

[0047] The lifting and transverse movement support device 20 includes a vertical lifting cylinder 28 hinged to the middle longitudinal beam 4, a lifting and transverse movement lifting support 31 hinged to the lifting cylinder 28, and a transverse movement device fixed to the bottom of the lifting and transverse movement lifting support 31. The tail end of the lifting cylinder 28 is fixed to the upper earring 29 of the lifting and transverse movement support device 20 by a pin; the top end of the lifting cylinder 28 is fixed to the middle longitudinal beam side flange plate 6 by a pin, and the middle longitudinal beam end earplate 6 is installed on the middle longitudinal beam end flange plate 5 at both ends of the middle longitudinal beam 4. The middle longitudinal beam end reinforcement rib 7 is installed on the back side of the middle longitudinal beam end flange plate 5. The lifting cylinder 28 provides a strong lifting force for adjusting the frame to the target height, while the lifting and transverse movement lifting support 31 and the transverse movement device ensure the accuracy of the horizontal adjustment, thereby improving the centering.

[0048] The traverse device includes a traverse mechanism 33 and a traverse base 34, which are connected by a horizontal linear actuator. The linear actuator ensures the accuracy and controllability of traverse movement, thereby reducing errors during adjustment and simplifying operation. The horizontal linear actuator can be a hydraulic cylinder, a linear motor, or the like.

[0049] The lifting and traversing support device 20 includes a lifting and traversing housing 32 disposed outside the lifting and traversing support 31 for guidance. The lifting and traversing housing 32 is fixedly connected to the lower longitudinal beam 16 via the lower longitudinal beam flange plate 17. This housing design not only provides additional protection but also ensures accurate positioning and smooth operation of components during the lifting process.

[0050] A longitudinal support 21 is located beneath the lower longitudinal beam 16. A vertically retractable support device 22 is installed at the bottom of the longitudinal support 21. This vertically retractable support device allows the frame to be adjusted in complex terrain conditions, improving construction adaptability and effectively reducing stability issues caused by uneven terrain. Furthermore, four support cylinder lugs 18 are located on either side of the lower longitudinal beam 16, connecting to the support cylinders 14. The support cylinders 14 are hingedly connected to the lugs on the center longitudinal beam 4.

[0051] The jacking and transverse shifting support device 20 can quickly and accurately achieve fine-tuning of the trolley. Cooperating with the support cylinder 14, it can ensure that the thickness and profile of the secondary lining meet the design requirements, and ensure the waterproof performance, structural strength and appearance quality of the tunnel. The operation process of the trolley frame is as follows: the jacking and transverse shifting shell 32 is set at both ends of the lower longitudinal beam 16; the jacking and transverse shifting jacking support 31 and the jacking and transverse shifting shell 32 are in a non-powered sliding connection relationship; after the trolley is in place, the jacking cylinder 28 extends to make the jacking and transverse shifting base 34 contact the ground to support the entire trolley body; after the transverse shifting base 34 lands, the support cylinder 14 extends to make the lower frame grid 23 contact the ground, making the overall support mechanism more stable; if the trolley as a whole needs to be adjusted laterally, the support cylinder 14 retracts to make the lower frame grid 23 rise, and the transverse shifting mechanism 33 can move left and right to fine-tune the trolley as a whole. After the adjustment, the support cylinder 14 extends to make the lower frame grid 23 contact the ground to support the overall mechanism. In addition, the vehicle passing trestle can be erected on the lower frame grid 23. In order to reduce the vibration of the vehicle passing trestle transmitted to the trolley itself, affecting the grouting and vibration quality, the vehicle passing trestle is directly supported on the ground by a supporting mechanism. There are multiple mesh holes on the lower frame grid 23 for the supporting mechanism to pass through. The vehicle passing trestle can be suspended on the lower frame grid 23 and has no connection to the lower frame grid 23, or it can have a simple connection.

[0052] The beamless frame structure of the secondary lining trolley is provided with a lower frame grid 23, on which a plurality of mesh holes are provided. The vehicle-passing trestle is suspended on the lower frame grid 23 by a supporting device passing through the mesh holes. The vehicle-passing trestle will not transmit vibration to the trolley and will not affect the construction quality of the secondary lining.

[0053] The support mechanism of the secondary lining trolley adopts a design in which the lower frame grid 23 is integrally connected to the support mechanisms on both sides and the formwork, which greatly simplifies the overall structure, reduces unnecessary components and connection points, and makes the entire support mechanism more concise and clear. The simplification of the support structure not only makes the manufacturing process easier and reduces production costs, but also makes it more convenient to operate and maintain in actual use. The support mechanism of the secondary lining trolley adopts a design in which the lower frame grid 23 is integrally connected to the support mechanisms on both sides and the formwork, which increases the passage area while ensuring strength, making it possible for large machinery to pass through the secondary lining trolley, facilitating the full mechanization of subsequent grouting and vibration operations, improving efficiency, and reducing labor costs.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the idea of ​​the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above. For the sake of simplicity, they are not provided in detail. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that it is still possible to modify the technical solutions recorded in the above embodiments, or to make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A supporting base for a secondary lining trolley frame structure, comprising supporting columns (2) arranged on both sides, characterized in that: Also includes: A U-shaped pedestal and an upper longitudinal beam (1) for bottom support, the upper side of the support column (2) being connected to the upper side of the upper longitudinal beam (1), and the frame structure having no cross beam arranged along the width direction of the trolley; The U-shaped pedestal comprises two vertical support devices on both sides and a lower frame grid (23), wherein the lower frame grid (23) and the vertical support devices are connected via a frame connection mechanism (24); The vertical support device comprises a middle longitudinal beam (4), a lower longitudinal beam (16) capable of vertically sliding relative to the middle longitudinal beam (4), and a support oil cylinder (14) connecting the middle longitudinal beam (4) and the lower longitudinal beam (16); the middle longitudinal beam (4) and the lower longitudinal beam (16) are connected via a vertical sliding device.

2. The supporting base of the secondary lining trolley frame structure according to claim 1, characterized in that: The vertical sliding device includes a plurality of guide cylinders (12) arranged at the bottom of the middle longitudinal beam (4) and fixedly connected to the middle longitudinal beam (4), and a plurality of guide square openings (26) arranged at the top of the lower longitudinal beam (16). The shape of the guide square openings (26) is consistent with the shape of the guide cylinders (12), and the guide cylinders (12) can slide freely in the guide square openings (26).

3. The supporting base of the secondary lining trolley frame structure according to claim 2, characterized in that: The middle longitudinal beam (4) is arranged obliquely above the lower frame grid (23).

4. The supporting base of the secondary lining trolley frame structure according to claim 3, characterized in that: Both ends of each of the middle longitudinal beams (4) are provided with lifting and transverse movement support devices (20).

5. The supporting base of the secondary lining trolley frame structure according to claim 4, characterized in that: The jacking and transverse movement support device (20) includes a vertical jacking cylinder (28) hinged to the middle longitudinal beam (4), a jacking and transverse movement support (31) hinged to the jacking cylinder (28), and a transverse movement device fixed to the bottom of the jacking and transverse movement support (31).

6. The supporting base of the secondary lining trolley frame structure according to claim 5, characterized in that: The transverse movement device comprises a transverse movement mechanism (33) and a transverse movement base (34), and the transverse movement mechanism (33) and the transverse movement base (34) are connected via a horizontal linear power device.

7. The supporting base of the secondary lining trolley frame structure according to claim 6, characterized in that: The lifting and lateral movement support device (20) includes a lifting and lateral movement shell (32) for guiding, which is arranged outside the lifting and lateral movement support (31); the lifting and lateral movement shell (32) is fixedly connected to the lower longitudinal beam (16).

8. The supporting base of the secondary lining trolley frame structure according to any one of claims 1 to 7, characterized in that: A longitudinal beam support (21) is provided below the lower longitudinal beam (16), and a vertical telescopic support device is provided at the bottom of the longitudinal beam support (21).

9. The supporting base of the secondary lining trolley frame structure according to claim 8, characterized in that: The vertical telescopic support device consists of a lead screw and support legs.

10. The supporting base of the secondary lining trolley frame structure according to claim 8, characterized in that: The lower frame grid (23) has mesh holes that can be used to pass through a supporting device that supports the vehicle platform.

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