A beamless frame structure for a secondary lining trolley

Abstract

A beamless frame structure for 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, and the template is in an arc shape as a whole, and includes a top template and two side templates, wherein the top template is pressed on the upper longitudinal beam to form an integral structure, wherein the two side templates are respectively hinged on both sides of the top template, and the frame structure does not include a beam arranged along the width direction of the trolley; the top template includes a plurality of top templates arranged along the length direction of the trolley, and the side template includes a plurality of side templates arranged along the length direction of the trolley. The present application can simplify the template for the secondary lining trolley, increase the passage area, and ensure strength at the same time.

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 generally 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 require professional technicians and equipment, which further increases the difficulty and cost of maintenance. The traditional secondary lining trolley formwork structure is relatively complex, and a large number of supporting structures are set up inside to ensure the strength of the formwork, which will affect the passage height and passage area of ​​the construction vehicles in the trolley. Summary of the invention

[0004] The present invention provides a beamless frame structure for a secondary lining trolley, so as to solve the problem that the template structure of the beamless frame structure for the secondary lining trolley is complex, which affects the passing height and passing area of ​​construction vehicles in the trolley.

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

[0006] A beamless frame structure for a secondary lining trolley comprises a template and a support base, wherein the support base comprises support columns arranged on both sides, a U-shaped pedestal for bottom support, and an upper longitudinal beam, wherein the upper part of the support column is connected to the upper longitudinal beam, wherein the template is in an arc shape as a whole, wherein the template comprises a top template group and two side template groups, wherein the top template group is pressed on the upper longitudinal beam to form an integral structure, wherein the two side template groups are respectively hinged on both sides of the top template group, and wherein the frame structure is not provided with a 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 device 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 support oil cylinder connecting the middle longitudinal beam and the lower longitudinal beam, and the middle longitudinal beam and the lower longitudinal beam are connected by a vertical sliding device;

[0009] The top formwork group includes a plurality of top formwork components arranged along the length direction of the trolley, and the side formwork group includes a plurality of side formwork components arranged along the length direction of the trolley.

[0010] Further, the side formwork includes a panel, side plates and a main stress-bearing frame. The main stress-bearing frame is formed by welding square tubes and is in the shape of a Chinese character 'Ri' or 'Mu'. The side plates are welded and fixed on both sides of the main stress-bearing frame, and a side formwork hinge ear is provided on one side of the side formwork.

[0011] Further, a single side of the side formwork is spliced by two of the side plates, and a support square tube is fixed inside the side plate along the direction perpendicular to the main stress-bearing frame. One end of the support square tube is connected to the panel and the other end is connected to the main stress-bearing frame.

[0012] Further, a plurality of reinforcing square tubes are provided on the back of the panel.

[0013] Further, the top formwork includes a panel, side plates and a main stress-bearing frame. The main stress-bearing frame is formed by welding square tubes and is in the shape of a Chinese character 'Ri' or 'Mu'. The side plates are welded and fixed on both sides of the main stress-bearing frame, and the top formwork includes a top formwork hinge ear.

[0014] Further, one side of the top formwork is composed of 3 side plates, and a support square tube is fixed inside the side plate along the direction perpendicular to the main stress-bearing frame. One end of the support square tube is connected to the panel and the other end is connected to the main stress-bearing frame.

[0015] Further, a plurality of reinforcing square tubes are provided on the back of the panel.

[0016] Further, an L-shaped connecting plate is provided on the inner side of the panel of the top formwork or the side formwork, and two adjacent L-shaped connecting plates are connected by bolts.

[0017] Further, adjacent top formworks are connected by bolts or welding.

[0018] Further, the outer side of the panel of the formwork is a stainless layer and the inner layer is a carbon steel layer.

[0019] The present invention can achieve the following beneficial effects: the template is annular in design, which eliminates the need for the support of a gantry in a traditional structure, thereby achieving lightweight and modularization. The splicing method of the mesh structure enables the template to not only evenly disperse the force, but also reduce the space occupied. The annular design also has high stability, can withstand forces from all directions, effectively prevents the template from tilting or collapsing during use, and improves the safety and efficiency of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the secondary lining trolley in the prior art;

[0021] Figure 2 This is a structural diagram of the secondary lining trolley of the present invention;

[0022] Figure 3 It is a template structure diagram of the present invention;

[0023] Figure 4 It is a left view of the template of the present invention;

[0024] Figure 5 is an isometric view of the template of the present invention;

[0025] Figure 6 It is a structural diagram of the top template group of the present invention;

[0026] Figure 7 It is a structural diagram of the top template of the present invention;

[0027] Figure 8 It is a structural diagram of the side formwork of the present invention;

[0028] Fig. 9 It is a structural diagram of the side formwork of the present invention;

[0029] Fig.10 It is a side plate of the side formwork of the present invention and a structural diagram on the side plate;

[0030] Fig.11 This is a structural diagram of the support base of the present invention;

[0031] Fig.12 is an isometric view of a support base of the present invention;

[0032] Fig.13 It is a left side view of the support base of the present invention;

[0033] Fig.14 It is a left side view of the support base of the present invention;

[0034] Fig.15 It is a structural diagram of the lower longitudinal beam of the present invention;

[0035] Fig.16 for Fig.11 The enlarged view of point A in the middle;

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 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. In / out mold cylinder; 16. Lower longitudinal beam; 17. Lower longitudinal beam flange plate; 18. Support cylinder ear plate; 19. In / out mold cylinder ear plate; 20. Lifting and lateral support device; 21. Beam support; 22. Vertical telescopic support device; 23. Lower frame grid; 24. Frame connection mechanism; 25. Lower frame footing; 26. Guide square opening; 27. Top template; 28. Lifting cylinder; 29. ​​Upper end earring; 30. Side template; 31. Lifting and transverse shifting lifting support; 32. Lifting and transverse shifting shell; 33. Transverse shifting mechanism; 34. Transverse shifting base; 35. Top template hinged ear; 36. Strengthened square tube; 37. Main load-bearing frame; 38. Square tube; 39. Support square tube; 40. L-shaped connecting plate; 41. Panel; 42. Side panel; 43. Side template hinged ear. DETAILED DESCRIPTION

[0038] 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.

[0039] like Figure 2-16 As shown, this embodiment discloses a beamless frame structure of a secondary lining trolley, including a template, the template includes a top template group, a side template group and a support base, and the support base includes support columns 2 arranged on both sides, a U-shaped pedestal supported at the bottom and an upper longitudinal beam 4. The number of support columns 2 on one side is at least two, and can also be 3 or more; the upper longitudinal beam 4 is connected above the support column 2, and the support column 2 is connected to the support column 2 through a support column flange plate 3.

[0040] The template is integrally arc-shaped and pressed on the upper longitudinal beam 4 to form an integral structure. There is no cross beam arranged along the width direction of the trolley on the frame structure. Removing the cross beam in the design can reduce the structural complexity and improve the versatility at the same time, making the whole frame more flexible to adapt to various tunnel environments. In addition, the passing area inside the frame can be increased, enabling large construction machinery to operate through the secondary lining trolley, so that more machinery can be used to replace manual labor during the secondary lining construction. For example, a pump truck can be used for grouting instead of the traditional grouting method.

[0041] The template includes a top template group and two side template groups. The top template group consists of multiple top templates 27 arranged along the length direction of the trolley, and the side template group consists of multiple side templates 30 arranged along the length direction of the trolley. Specifically, the top template group is composed of 8 arc-shaped top templates 27 arranged along the length direction of the trolley, and each side of the side template is composed of 8 arc-shaped side templates 30 arranged along the length direction of the trolley. The top template 27 and the side template 30 are hinged by means of hinge connection. There are top mold hinge ears 35 arranged on both sides of the top template 27, and there is a side mold hinge ear 43 arranged on one side of the side template 30. The top mold hinge ear 35 and the side mold hinge ear 43 are hinged by a pin shaft.

[0042] Each top template 27 is composed of a long arc-shaped panel 41, six side plates 42, at least twelve reinforcing square tubes 36, support square tubes 39, and three main stress frames 37. The main stress frames 37 are welded by square tubes 38 and are in the shape of a Chinese character 'Ri' or 'Mu'. The six side plates 42 are evenly fixed to both sides of the main stress frame by welding. On the same side, L-shaped connecting plates 40 are arranged at the inner edges of adjacent side plates 42. The bottom of the L-shaped connecting plate 40 is fixed inside the side plate 42 by bolts, and adjacent two L-shaped connecting plates 40 are connected by bolts. This modular splicing method can significantly improve the construction convenience and the adaptability of the template. Different top templates 27 are convenient to replace by bolt connection or more stable by welding connection.

[0043] The long arc-shaped panel 41 is welded above the side plate 42 by a mixture of stainless steel and carbon steel. The stainless steel layer of the long arc-shaped panel 41 provides a smooth contact surface for the concrete surface, reduces the surface roughness, and has corrosion resistance at the same time, avoiding corrosion reaction when the template contacts the concrete. The carbon steel layer provides strength and hardness to ensure that the template is not easily deformed under the concrete pouring pressure.

[0044] Reinforcing square tubes 36 are welded on the back of the template. These reinforcing square tubes 36 significantly enhance the stability of the template, can withstand greater pressure and tension, and prevent the template from deforming or cracking during use. The reinforcing square tubes 36 are connected to the stress frame 37 by support square tubes 39 to form a more stable structure, effectively dispersing stress and enhancing the overall strength.

[0045] The side formwork group is composed of a short arc panel 41, four side panels 42, at least twelve reinforcing square tubes 36, supporting square tubes 39, and two main force frames 37. The main force frames 37 are welded by square tubes 38. The short arc panel 41 is also welded on the top of the side panel 42 with a mixture of stainless steel and carbon steel, and the reinforcing square tubes 36 and supporting square tubes 39 are welded on the back.

[0046] The template is designed as a ring, which eliminates the need for gantry support in traditional structures, achieving lightweight and modularization. The mesh structure allows the template to evenly distribute force and reduce space occupation. The ring design also has high stability and can withstand forces from all directions, effectively preventing the template from tilting or collapsing during use, thereby improving construction safety and efficiency.

[0047] During installation, only the modules need to be spliced ​​together, and they can be easily decomposed into individual modules during disassembly, which is convenient for transportation and storage, greatly saving manpower and time, and improving construction efficiency. In addition, adjacent top templates 27 are connected by bolts or welding to ensure the firmness of the connection and facilitate disassembly and assembly.

[0048] With the rapid development of transportation infrastructure, the number of tunnel constructions continues to grow, and the quality requirements for tunnel secondary lining construction are gradually increasing. Traditional trolleys generally have problems such as heavy weight, complex structure, low construction efficiency, difficult quality control and poor adaptability. The present invention significantly improves these shortcomings of traditional templates by introducing the main force frame 37 splicing structure, annular template design and modular assembly method, ensuring the strength, durability, waterproof performance and quality control ability of the construction.

[0049] 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 4 and the support column 2 to ensure that the trolley can maintain stability and structural integrity when bearing a large weight. The lower frame 23 is supported by the lower frame foot 25 and connected with bolts and nuts. The height of the frame can be easily adjusted to adapt to different construction conditions by simply adjusting the nuts.

[0050] 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.

[0051] The supporting base of the secondary lining trolley does not have too many connection points with the template, which enables it to better adapt to tunnels with different cross-sections. The design of the supporting mechanism allows it to be flexibly adjusted according to different tunnel sections, improving its adaptability and versatility. In addition, the construction problems caused by improper connection between the template and the supporting mechanism are reduced, and the construction quality and efficiency are improved. 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 23 is connected to the lower longitudinal beam 16 through a frame connection mechanism 24. This welding or bolting method makes the assembly between the lower frame 23 and the lower longitudinal beam 16 more stable, which is convenient for later disassembly and maintenance.

[0052] 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 .

[0053] Eight expansion and contraction mold cylinder lugs 19 are arranged on the outside of the lower longitudinal beam 16 and fixed by welding (or 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 plate 17 is arranged at both ends of the lower longitudinal beam 16, and is connected by welding or bolts. The support 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. 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 the shape 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 possible deviation caused by external force. In addition, in order to improve the rigidity and stability of the guide device, a guide flange plate 11 is set 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 set 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.

[0054] 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.

[0055] 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.

[0056] A longitudinal beam support 21 is provided below the lower longitudinal beam 16, and a vertical 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. A lifting and lateral shifting support device 20 is provided at both ends of each middle longitudinal beam 4. The lifting and lateral shifting support device 20 is not only used to adjust the height of the middle longitudinal beam 4, but also to ensure the precise positioning of the template. The lifting and lateral shifting support device 20 includes a vertical lifting cylinder 28 hinged to the middle longitudinal beam 4, a lifting and lateral shifting lifting support 31 hinged to the lifting cylinder 28, and a lateral shifting device fixed at the bottom of the lifting and lateral shifting lifting support 31. The tail end of the lifting cylinder 28 is fixed to the upper earring 29 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 end ear 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.

[0057] The transverse movement device includes 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 by a horizontal linear power device. The linear power device ensures the accuracy and controllability of the transverse movement, 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. The jacking and transverse movement support device 20 includes a jacking and transverse movement housing 32 for guiding, which is arranged outside the jacking and transverse movement jacking support 31. The jacking and transverse movement 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 jacking process.

[0058] A longitudinal beam support 21 is provided below the lower longitudinal beam 16, and a vertically telescopic support device 22 is provided at the bottom of the longitudinal beam support 21. The vertically telescopic support device 22 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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 includes support columns (2) provided on both sides, a U-shaped pedestal for bottom support, and an upper longitudinal beam (1). The upper longitudinal beam (1) is connected above the support columns (2). The template is integrally arc-shaped. The template includes a top template group and two side template groups. The top template group is pressed on the upper longitudinal beam (1) to form an integral structure. The two side template groups are respectively hinged on both sides of the top template group. There is no cross 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 (23). The lower frame grid (23) and the vertical support device are connected by a frame connection mechanism (24). 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 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 by a vertical sliding device. The top template group includes a plurality of top templates (27) arranged along the length direction of the trolley. The side template group includes a plurality of arc-shaped side templates (30) arranged along the length direction of the trolley. The support columns (2) are located on the middle longitudinal beam (4). There are only two support columns (2) on each side, and the part of the support column (2) close to the upper longitudinal beam has a thickened structure. The vertical sliding device includes a plurality of guide cylinders (12) fixedly connected to the bottom of the middle longitudinal beam (4) and the middle longitudinal beam (4), and a plurality of guide square openings (26) arranged on the top of the lower longitudinal beam (16). The shape of the guide square opening (26) is the same as that of the guide cylinder (12), and the guide cylinder (12) can freely slide in the guide square opening (26). Adjacent top templates (27) are connected by bolts or welding.

2. The beamless frame structure of the secondary lining trolley according to claim 1 is characterized in that: The side template (30) includes a panel (41), a side plate (42), and a main stress frame (37). The main stress frame is welded by square tubes (38) and is in the shape of a Chinese character 'Ri' or 'Mu'. The side plates (42) are welded and fixed on both sides of the main stress frame. A side mold hinge ear (43) is provided on one side of the side template.

3. The beamless frame structure of the secondary lining trolley according to claim 2 is characterized in that: A single side of the side template (30) is formed by splicing two side plates (42). Support square tubes (39) are fixed inside the side plates (42) along the direction perpendicular to the main stress frame. One end of the support square tube (39) is connected to the panel (41), and the other end is connected to the main stress frame (37).

4. The beamless frame structure of the secondary lining trolley according to claim 3 is characterized in that: A plurality of reinforcing square tubes (36) are provided on the back of the panel (41).

5. The beamless frame structure of the secondary lining trolley according to claim 1 is characterized in that: The top template includes a panel (41), a side plate (42), and a main stress frame (37). The main stress frame (37) is welded by square tubes (38) and is in the shape of a Chinese character 'Ri' or 'Mu'. The side plates (42) are welded and fixed on both sides of the main stress frame (37). The top template (27) includes a top mold hinge ear (35).

6. The beamless frame structure of the secondary lining trolley according to claim 5 is characterized in that: One side of the top template is composed of three side panels (42), and a supporting square tube (39) is fixed on the inner side of the side panel (42) in a direction perpendicular to the main force frame. One end of the supporting square tube (39) is connected to the panel (41), and the other end is connected to the main force frame (37).

7. The beamless frame structure of the secondary lining trolley according to claim 6 is characterized in that: A plurality of reinforcing square tubes (36) are arranged on the back side of the panel (41).

8. The beamless frame structure of the secondary lining trolley according to claim 1 is characterized in that: An L-shaped connecting plate (40) is provided on the inner side of the panel (41) of the top formwork (27) or the side formwork (30), and two adjacent L-shaped connecting plates (40) are connected by bolts.

9. The beamless frame structure of the secondary lining trolley according to claim 1 is characterized in that: The outer side of the panel of the template is a stainless layer, and the inner layer is a carbon steel layer.

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