A beamless frame structure for a secondary lining trolley

Abstract

A beamless frame structure of a secondary lining trolley includes a template and a support base. The support base includes support columns arranged on both sides, a U-shaped pedestal for bottom support, and an upper longitudinal beam. The upper longitudinal beam is connected to the support column. The template is arc-shaped as a whole. The template includes a top template group and two side template groups. The top template group is installed on the upper longitudinal beam. The two side template groups are connected to the top template group by hinged connection. There is no beam arranged along the width direction of the trolley on the frame structure; the U-shaped pedestal includes two vertical support devices on both sides and a lower frame grid. The lower frame grid and the vertical support device are connected by a frame connection mechanism; 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 support cylinder connecting the middle longitudinal beam and the lower longitudinal beam. The secondary lining trolley of this application patent is designed as a large clearance structure without beams and operating platforms under the premise of ensuring strength, which is convenient for concrete pouring without interference and increases the traffic area.

Description

Technical Field

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

[0002] With the continuous development of transportation infrastructure, the number of highway and railway tunnels continues to increase, and tunnel construction technology continues to improve. In order to improve the stability and safety of tunnels, the quality requirements for the construction of tunnel secondary lining (referred to as "secondary lining") are getting higher and higher. The secondary lining needs to have sufficient strength, durability and waterproof performance, which is directly related to the overall quality and service life of the tunnel. The key equipment for the construction of the secondary lining, the secondary lining trolley, has an important impact on the overall quality of the tunnel due to its construction accuracy and quality. However, the traditional secondary lining trolley gantry support structure has many problems in practical applications, which limit its widespread application 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 in the figure, a gantry is usually used, with a large number of scaffoldings set up around it. The structure is complex and inconvenient to disassemble and assemble. In addition, the existence of the scaffolding restricts the passage and construction of other construction vehicles inside the secondary lining trolley. The maintenance cost of the traditional gantry support structure is also high. During the construction process, the support mechanism often bears large loads and vibrations, which can easily cause damage or deformation of the components. Due to the complex structure of the traditional gantry, its maintenance and repair requires professional technicians and equipment, which further increases the difficulty and cost of maintenance. Summary of the invention

[0004] The present invention provides a beamless frame structure for a secondary lining trolley 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 beamless frame structure of a secondary lining trolley includes a template and a support base, wherein the support base includes 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 support column.

[0007] The template is in an arc shape as a whole, and includes a top template and two side templates. The top template is pressed on the upper longitudinal beam to form an integral structure. The two side templates are hinged on both sides of the top template respectively. There is no crossbeam set along the width direction of the trolley on the frame structure.

[0008] 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 device are connected by a frame connection mechanism;

[0009] The vertical support device comprises a middle longitudinal beam, a lower longitudinal beam which can slide vertically relative to the middle longitudinal beam, and a support 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.

[0010] Furthermore, 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.

[0011] Furthermore, the middle longitudinal beam is arranged obliquely above the lower frame grid.

[0012] Furthermore, both ends of each middle longitudinal beam are provided with a lifting and transverse movement mechanism.

[0013] Furthermore, the lifting and transverse shifting mechanism includes a vertical lifting cylinder hinged to the middle longitudinal beam, a lifting and transverse shifting lifting support hinged to the lifting cylinder, and a transverse shifting device fixed to the bottom of the lifting support.

[0014] Furthermore, 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.

[0015] Furthermore, the lifting and lateral movement mechanism 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.

[0016] Furthermore, a longitudinal beam support is arranged below the lower longitudinal beam; and a vertical telescopic support device is arranged at the bottom of the longitudinal beam support.

[0017] Furthermore, the supporting device is composed of a lead screw and supporting feet.

[0018] Furthermore, meshes are left on the lower frame grid, which can be used to pass through a supporting device supporting the vehicle platform.

[0019] The present invention can achieve the following beneficial effects:

[0020] (1) The biggest advantage of this design is that it reduces the beam components and their complex connection points in the traditional structure, 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 quickly adapt and be 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.

[0021] (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 enough 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 mechanized, 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.

[0022] (3) This design is optimized on the basis of the traditional trolley frame. It adopts a lower frame grid and sets multiple mesh holes on it to provide support for the trestle. In this design, the trestle is suspended on the lower frame grid and is not directly connected to the trolley itself. This effectively prevents the vibration of the trestle from being transmitted to the formwork through the trolley, thereby affecting the quality of the secondary lining construction. Since the trestle is independently supported and suspended, the vibration is effectively isolated, which greatly improves the accuracy of grouting and vibration operations and ensures the quality of 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 trestle, so that it can withstand loads under different construction environments, providing greater safety guarantees for subsequent construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the overall structural diagram of the secondary lining trolley in the prior art;

[0024] Figure 2 This is the overall structural diagram of the beamless frame structure of the secondary lining trolley of the present invention;

[0025] Figure 3 is an isometric view of a support base of the present invention;

[0026] Figure 4 This is a structural diagram of the support base of the present invention;

[0027] Figure 5 It is a left side view of the support base of the present invention;

[0028] Figure 6 It is a left side view of the support base of the present invention;

[0029] Figure 7 It is a structural diagram of the lower longitudinal beam of the present invention;

[0030] Figure 8 for Figure 4 The enlarged view of point A in the middle;

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 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. Lifting and lateral 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. Lifting cylinder; 29. ​​Upper end earring; 30. Side template; 31. Lifting and lateral shifting lifting support; 32. Lifting and lateral shifting shell; 33. Horizontal shifting mechanism; 34. Horizontal shifting base. DETAILED DESCRIPTION

[0033] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0034] like Figure 2-8 As shown, this embodiment discloses a beamless frame structure of a secondary lining trolley, including a template, the template includes a top template group, two side template groups and a support base 23, and the support base 23 includes support columns 2 arranged on both sides, a U-shaped pedestal supported at the bottom and an upper longitudinal beam 1. The number of support columns 2 on one side is at least two, and can also be 3 or more; the upper longitudinal beam 1 is connected to the support column 2, and the support column 2 is connected to the support column 2 through a support column flange plate 3.

[0035] 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.

[0036] The template is pressed on the upper longitudinal beam 1 in an arc shape as a whole, thus forming an integral structure. The frame structure does not have a crossbeam arranged along the width direction of the trolley. Removing the crossbeam during design can reduce the complexity of the structure and improve the versatility, making the entire frame more flexible and adaptable in various tunnel environments. In addition, the passing area within the frame can be increased, so that large construction machinery can operate through the secondary lining trolley, so that more machinery can be used instead of manual labor during the secondary lining construction process. For example, a boom pump truck can be used for pouring, thereby replacing the traditional pouring method.

[0037] The U-shaped pedestal includes two vertical support devices on both sides and a lower frame grid 23, and the lower frame grid 23 and the vertical support device are connected by a frame connection mechanism 24. This connection method cooperates with the overall frame structure formed by the upper longitudinal beam 1 and the support column 2 to ensure that the trolley can maintain stability and structural integrity when bearing a large weight. The lower frame grid 23 is supported by the lower frame grid foot 25 and connected with bolts and nuts. The height of the frame can be easily adjusted to adapt to different construction conditions by simple nut adjustment.

[0038] 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, making the structure more stable and the pressure capacity stronger, so that it can better adapt to these complex construction conditions and ensure the safety and smooth progress of the construction.

[0039] The secondary lining trolley support base does not have too many connection points with the template, which enables it to better adapt to tunnels with different sections. The design of the support mechanism allows it to be flexibly adjusted according to different tunnel sections, improving its adaptability and versatility. In addition, it also reduces construction problems caused by improper connection between the template and the support mechanism, improving construction quality and efficiency.

[0040] The vertical support device includes a middle longitudinal beam 4, a lower longitudinal beam 16 that can slide vertically relative to the middle longitudinal beam 4, and one side of the lower frame grid 23 is connected to the lower longitudinal beam 16 through a frame connection mechanism 24. This welding or bolt connection method makes the assembly between the lower frame grid 23 and the lower longitudinal beam 16 more stable and convenient for later disassembly and maintenance.

[0041] 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 .

[0042] Eight expansion and contraction mold cylinder lugs 19 are arranged on the outside of the lower longitudinal beam 16 and fixed 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. The lower longitudinal beam flange plates 17 are arranged at both ends of the lower longitudinal beam 16 and connected by welding or bolts.

[0043] The supporting oil cylinder 14 connects the middle longitudinal beam 4 and the lower longitudinal beam 16, and the middle longitudinal beam 4 and the lower longitudinal beam 16 are connected by a vertical sliding device. The setting of the vertical sliding device allows the U-shaped pedestal to be flexibly adjusted in the vertical direction, thereby ensuring that the template 27 can still be stably supported when the tunnel section size changes, thereby improving the accuracy and efficiency of construction.

[0044] 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 opening 26 is consistent with that of the guide cylinder 12, and the guide cylinder 12 can slide freely in the guide square opening 26. Such a design ensures the stability of vertical movement by limiting the sliding direction of the lower longitudinal beam 16, and reduces the deviation that may be caused by external force. In addition, in order to improve the rigidity and stability of the guide device, a guide flange plate 11 is arranged 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 arranged 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.

[0045] During the process of template lifting and retracting, the vertical sliding mechanism plays a guiding role, ensuring the accurate movement direction of the support mechanism and increasing the stability of the mechanism. In addition, in tunnel construction, due to the complex construction environment, there may be various external forces such as vibration and wind. The guide mechanism can effectively resist these external forces and ensure the stable operation of the support mechanism.

[0046] The vertical sliding mechanism cooperates with the lifting cylinder 28 to complete the lifting and retracting of the template. While the supporting cylinder provides the lifting force, the vertical sliding mechanism can ensure the accurate movement trajectory of the template to avoid deviation or tilt. This collaborative working method improves the working efficiency and reliability of the supporting mechanism and ensures the quality and safety of construction.

[0047] A longitudinal beam support 21 is provided below the lower longitudinal beam 16, and a vertically telescopic support device 22 is provided below the longitudinal beam support 21. The lower longitudinal beam 16 is provided obliquely above the lower frame grid 23. This layout leaves installation space for the traveling mechanism, so that the traveling mechanism can be installed below the lower longitudinal beam 16. Both ends of each middle longitudinal beam 4 are provided with a lifting and lateral movement support device 20, which is not only used to adjust the height of the middle longitudinal beam 4, but also to ensure the precise positioning of the template.

[0048] The lifting and lateral movement support device 20 includes a vertical lifting cylinder 28 hinged to the middle longitudinal beam 4, a lifting and lateral movement lifting support 31 hinged to the lifting cylinder 28, and a lateral movement device fixed at the bottom of the lifting and lateral movement lifting support 31. The tail end of the lifting cylinder 28 is fixed to the earring 29 at the upper end of the lifting and lateral movement support device 20 through a pin; the top end of the lifting cylinder 28 is fixed to the middle longitudinal beam side flange plate 6 through a pin, and the middle longitudinal beam end ear plate 6 is installed on the middle longitudinal beam end flange plate 5 at both ends of the middle longitudinal beam 4, and 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 lateral movement lifting support 31 and the lateral movement device ensure the accuracy of horizontal adjustment, thereby better centering.

[0049] The traverse device includes a traverse mechanism 33 and a traverse base 34, and the traverse mechanism 33 and the traverse base 34 are connected by a horizontal linear power device. The linear power device ensures the accuracy and controllability of the traverse, thereby reducing the error in the adjustment process and simplifying the operation. The horizontal linear power device can adopt a hydraulic cylinder, a linear motor, etc.

[0050] The lifting and traversing support device 20 includes a lifting and traversing housing 32 for guiding, which is arranged outside the lifting and traversing lifting support 31, and the lifting and traversing housing 32 is fixedly connected to the lower longitudinal beam 16 through the lower longitudinal beam flange plate 17. This housing design not only provides additional protection, but also ensures the precise positioning and smooth operation of the components during the lifting process.

[0051] A longitudinal beam support 21 is provided below the lower longitudinal beam 16, and a vertical telescopic support device 22 is provided at the bottom of the longitudinal beam support 21. The vertical telescopic support device can adjust the frame under complex terrain conditions, improve construction adaptability, and effectively reduce stability problems caused by uneven terrain. In addition, four support cylinder lugs 18 are provided on both sides of the lower longitudinal beam 16, respectively, for connecting the support cylinder 14, and the support cylinder 14 and the lugs on the middle longitudinal beam 4 are hinged.

[0052] The lifting and lateral shifting support device 20 can quickly and accurately achieve fine-tuning of the trolley. Cooperating with the supporting oil 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 lifting and lateral shifting shell 32 is set at both ends of the lower longitudinal beam 16; the lifting and lateral shifting lifting support 31 and the lifting and lateral shifting shell 32 are in a non-powered sliding connection relationship; after the trolley is in place, the lifting oil cylinder 28 extends to make the lifting and lateral shifting base 34 contact the ground to support the entire trolley body; after the lateral shifting base 34 lands, the supporting oil 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 supporting oil cylinder 14 is retracted to make the lower frame grid 23 rise, and the lateral shifting mechanism 33 can be moved left and right to fine-tune the trolley as a whole, and after the adjustment, the supporting oil 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 and affect the quality of grouting and vibration, 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 with the lower frame grid 23, or it can have a simple connection.

[0053] 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 arranged. The vehicle-passing trestle is suspended on the lower frame grid 23 through 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.

[0054] The support mechanism of the secondary lining trolley adopts the design of integrally connecting the lower frame grid 23 with the support mechanisms on both sides and the template, 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 the design of integrally connecting the lower frame grid 23 with the support mechanisms on both sides and the template, 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.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the above embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the above embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, 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 beamless frame structure of a secondary lining trolley, comprising a template and a supporting base, characterized in that: The support base comprises support columns (2) arranged on both sides, a U-shaped pedestal for bottom support, and an upper longitudinal beam (1), the upper part of the support column (2) being connected to the upper longitudinal beam (1), the template being in an arc shape as a whole, the template comprising a top template group and two side template groups, the top template group being installed on the upper longitudinal beam (1) to form an integral structure, the two side template groups being respectively connected to the top template group by hinged means, and the frame structure is not provided with a crossbeam 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), the lower frame grid (23) and the vertical support device being connected by 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) being connected by a vertical sliding device; The support column (2) is located on the middle longitudinal beam (4); the side formwork group is arc-shaped; there are only two support columns (2) on each side, and the support column (2) has a thickened structure near the upper longitudinal beam; 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 cylinder (12), and the guide cylinder (12) can slide freely in the guide square openings (26).

2. The beamless frame structure of the secondary lining trolley according to claim 1 is characterized in that: The middle longitudinal beam (4) is arranged obliquely above the lower frame grid (23).

3. The beamless frame structure of the secondary lining trolley according to claim 2 is characterized in that: Both ends of each of the middle longitudinal beams (4) are provided with lifting and lateral movement support devices (20).

4. The beamless frame structure of the secondary lining trolley according to claim 3 is characterized in that: The lifting and lateral movement support device (20) comprises a vertical lifting cylinder (28) hinged to the middle longitudinal beam (4), a lifting and lateral movement support (31) hinged to the lifting cylinder (28), and a lateral movement device fixed to the bottom of the lifting and lateral movement support (31).

5. The beamless frame structure of the secondary lining trolley according to claim 4 is 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.

6. The beamless frame structure of the secondary lining trolley according to claim 5 is characterized in that: The lifting and lateral movement support device (20) comprises a lifting and lateral movement outer shell (32) for guiding, which is arranged outside the lifting and lateral movement support (31); the lifting and lateral movement outer shell (32) is fixedly connected to the lower longitudinal beam (16).

7. The beamless frame structure of the secondary lining trolley according to any one of claims 1 to 6, 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).

8. The beamless frame structure of the secondary lining trolley according to claim 7 is characterized in that: The vertical telescopic support device consists of a lead screw and support feet.

9. The beamless frame structure of the secondary lining trolley according to claim 7 is characterized in that: The lower frame grid (23) has mesh holes which can be used to pass through a supporting device supporting the vehicle platform.

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