Intelligent formwork collecting and supporting system for secondary lining trolley

Abstract

The utility model discloses an intelligent mould folding and supporting system for a secondary lining trolley, which comprises a left side mould folding oil cylinder, a right side mould folding oil cylinder, a jacking oil cylinder and a supporting device, the left side mould folding oil cylinder is connected with a left upright post connecting piece and a side mould connecting piece, and the right side mould folding oil cylinder is connected with a right upright post connecting piece and a side mould connecting piece. The supporting device comprises a lower longitudinal beam, a middle longitudinal beam, supporting columns and an upper longitudinal beam, the jacking oil cylinder is installed on the lower longitudinal beam and connected with the middle longitudinal beam through a jacking oil cylinder connecting piece, the supporting columns are symmetrically arranged on the two sides of the upper face of the middle longitudinal beam, the upper longitudinal beam is arranged at the top ends of the supporting columns on the two sides, the upper longitudinal beam is fixed to the top die, and the jacking oil cylinder controls lifting of the top die through the supporting device. According to the utility model, the design of a hydraulic system is improved, so that the dependence of the secondary lining trolley on a mechanical supporting structural member is reduced, the system structure is more simplified, and meanwhile, the existing functions are reserved and optimized, thereby realizing more intelligent, convenient and efficient mold collection and support operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction, and in particular relates to an intelligent retractable and extendable die system for a secondary lining trolley. Background Art

[0002] The role of the secondary lining trolley in tunnel construction is to provide a stable formwork support system for concrete pouring. The current common secondary lining trolley retractable and extended formwork structure usually uses four vertical cylinders, such as Figure 1 As shown, the extension and retraction of these cylinders are controlled separately by four reversing valve handles. During operation, construction workers need to ensure the synchronization of the four cylinders, and this synchronization relies entirely on manual operation experience to adjust the control of the reversing valve handles. After the side formwork of this system is retracted and folded, the construction workers need to tighten the bracket support jacks to the bracket longitudinal beams and unscrew the side jacks to tighten the jack connecting beams, so that the upper and lower formwork assemblies are tightly combined. To prevent the hydraulic system from depressurizing and causing the formwork to retract, multiple mechanical supports are required. These supports are usually heavy, and during the construction process, multiple workers are required to cooperate to manually tighten the adjustment screws and lift each support into place one by one. This traditional structure is complicated to operate in actual use and requires a high level of experience and physical strength from the construction workers.

[0003] Although the existing secondary lining trolley expansion and contraction formwork technology can achieve basic fixation and contraction of the formwork, it still has many shortcomings. First, this technology requires construction workers to manually adjust the reversing valve handle to achieve the synchronous movement of the four oil cylinders. It relies entirely on manual experience, is complex to operate, and has low efficiency. Secondly, after the hydraulic support is completed, mechanical supports are still required as backup supports. This type of mechanical support is not only heavy, but also requires multiple workers to manually tighten the adjustment screw to complete the fixation, which significantly increases the construction process and manual working time. In addition, the structural design of the mechanical support increases the deadweight of the trolley, and is prone to bending and deformation during long-term use. This not only affects construction safety, but also requires frequent replacement, further increasing construction costs and maintenance difficulties. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model proposes an intelligent expansion and contraction die system for the secondary lining trolley. By improving the design of the hydraulic system, the secondary lining trolley's dependence on mechanical support structures is reduced, the system structure is simplified, and at the same time, existing functions are retained and optimized, thereby achieving more intelligent, convenient and efficient expansion and contraction die operation.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] The utility model provides a kind of intelligent collection and distribution mode system for two-lining trolley, including left side mode folding oil cylinder, right side mode folding oil cylinder, jacking oil cylinder, support device, the left side mode folding oil cylinder is connected with left side's column connector and side mode connector, for the contraction and deployment of left side mode are controlled;The right side mode folding oil cylinder is connected with right side's column connector and side mode connector, for the contraction and deployment of right side mode are controlled;The support device includes lower longitudinal beam, middle longitudinal beam, support column and upper longitudinal beam, the jacking oil cylinder is installed on the lower longitudinal beam, is connected with middle longitudinal beam by jacking oil cylinder connector, support column is symmetrically arranged on the upper side of middle longitudinal beam, the upper longitudinal beam is arranged in the top end of two sides support column, the upper longitudinal beam is fixed with top die, the jacking oil cylinder is controlled the lifting of top die by support device;Multiple guide mechanisms are arranged between the middle longitudinal beam and lower longitudinal beam of the support device, multiple guide square holes are opened on the upper surface of the lower longitudinal beam, the front end of the guide mechanism passes through the guide square hole, under the action of the jacking oil cylinder, the relative position of the middle longitudinal beam and lower longitudinal beam can be adjusted.

[0007] Preferably, it further comprises a hydraulic power device, which comprises a synchronization valve, a pressure maintaining valve, a pressure valve, an oil pipe and a hydraulic station, for controlling the synchronous action of the left side mode folding oil cylinder, the right side mode folding oil cylinder and the jacking oil cylinder.

[0008] Preferably, the synchronization valve is connected with the hydraulic station, for controlling the synchronous action of the left side mode folding oil cylinder, the right side mode folding oil cylinder and the jacking oil cylinder.

[0009] Preferably, the pressure maintaining valve is connected with the hydraulic station, for preventing the formwork from shrinking after the hydraulic system depressurizes.

[0010] Preferably, the pressure valve is connected with the hydraulic station, for controlling the extension and retraction stroke of the oil cylinder according to the preset pressure range.

[0011] Preferably, the oil pipe is connected with the left side mode folding oil cylinder, the right side mode folding oil cylinder and the jacking oil cylinder respectively.

[0012] Preferably, the top-lifting horizontal-moving mechanism is fixed with a horizontal-moving device at the bottom.

[0013] Preferably, the top-lifting horizontal-moving mechanism is fixed with a horizontal-moving device at the bottom.

[0014] The utility model has the advantages that the hydraulic system of the utility model can be operated automatically, supports one-key formwork folding and formwork supporting functions, gets rid of the complicated operation process of traditional manual adjustment reversing valve, significantly reduces operation difficulty and dependence on manual experience. The hydraulic power device realizes synchronous action of multiple groups of oil cylinders through a synchronous valve, ensures accurate extension and lifting of the formwork, improves operation efficiency, and shortens the construction period. By adding a pressure maintaining valve to replace mechanical supporting parts, dependence on heavy mechanical supporting parts of the secondary lining trolley is greatly reduced, thereby reducing the self weight of the trolley. This not only reduces the transportation and installation difficulty of the equipment, but also reduces the bending deformation problem of the mechanical supporting parts caused by long-term use, reduces maintenance and replacement cost, and realizes cost reduction and benefit increase. The design of the pressure maintaining valve further enhances hydraulic stability during construction, prevents formwork retraction caused by pressure relief, and ensures safety and construction quality of the pouring operation. The support device and the formwork connection point are reasonably designed, and through flexible combination of the upper and lower longitudinal beams, support columns and guide mechanisms, the support device can adapt to the tunnel construction requirements of different cross-sectional shapes. The design of the guide mechanism ensures the accuracy of the formwork movement track, and even in complex geological conditions of tunnel construction, reliable support and accurate formwork adjustment can be provided, enhancing the universality and adaptability of the system. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a secondary lining trolley formwork folding and supporting structure schematic diagram of prior art;

[0016] Figure 2 It is a structure schematic diagram of the intelligent formwork folding and supporting system of the utility model embodiment;

[0017] Figure 3 It is a structure schematic diagram of the hydraulic power device of the utility model embodiment;

[0018] Figure 4 It is a three-dimensional schematic diagram of the support device of the utility model embodiment;

[0019] Figure 5 It is a three-dimensional front view of the lower longitudinal beam of the utility model embodiment.

[0020] Signs: 1 - left side module folding oil cylinder;2 - right side module folding oil cylinder;3 - stand connecting piece;4 - side module connecting piece;5 - jacking oil cylinder;6 - support device;61 - lower longitudinal beam;62 - middle longitudinal beam;63 - support column;64 - upper longitudinal beam;65 - jacking transverse moving mechanism;66 - guide mechanism;67 - guide square hole;68 - transverse moving device;7 - jacking oil cylinder connecting piece;8 - synchronous valve;9 - pressure maintaining valve;10 - pressure valve;11 - oil pipe;12 - hydraulic station. DETAILED DESCRIPTION

[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, based on the embodiments of the present application, all other embodiments obtained by the person skilled in the art belong to the present application.

[0022] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the technology can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.

[0023] Please refer to Figures 2-5 The embodiment provides a kind of for two lining trolley's intelligent income and expenditure module system, including left side module folding oil cylinder 1, right side module folding oil cylinder 2, jacking oil cylinder 5, support device 6.Left side module folding oil cylinder 1 is connected with left side's column connecting piece 3 and side module connecting piece 4, is connected for controlling the contraction and expansion of left side module.Wherein, left side module folding oil cylinder 1 is realized hydraulic control by hydraulic power device, its connection mode with column connecting piece 3 ensures that the movement track of left side module is stable, avoids the deviation in operation, while side module connecting piece 4 is combined closely with side module, provides reliable lateral support in construction process.Right side module folding oil cylinder 2 is connected with right side's column connecting piece 3 and side module connecting piece 4, for controlling the contraction and expansion of right side module.The structure design of right side module folding oil cylinder 2 is similar to left side module folding oil cylinder 1, is driven by hydraulic power device, cooperates with right side's connecting piece 3 and side module connecting piece 4, ensure that right side module and left side module act synchronously, avoid the deformation of formwork due to uneven stress.

[0024] The support device 6 comprises a lower longitudinal beam 61, a middle longitudinal beam 62, support columns 63 and an upper longitudinal beam 64. The jacking oil cylinder 5 is mounted on the lower longitudinal beam 61 and connected with the middle longitudinal beam 62 through the jacking oil cylinder connecting piece 7. In this structure, the lower longitudinal beam 61 provides a stable support foundation as a whole, the stand column connecting piece 3 is arranged on the lower longitudinal beam 61, and the design of the middle longitudinal beam 62 ensures the vertical strength and stability of the support device 6. The connecting piece 7 of the jacking oil cylinder 5 allows the lifting action of the middle longitudinal beam 62 to be more smooth and accurate, the support columns 63 are symmetrically arranged on the upper side of the middle longitudinal beam 62, and the overall strength of the structure is further strengthened. The upper longitudinal beam 64 is arranged at the top end of the two side support columns 63 and is fixed with the top die, and the precise adjustment of the top die is realized through the stable support of the support columns 63 and the lifting action of the jacking oil cylinder 5. A plurality of guide mechanisms 66 are arranged between the middle longitudinal beam 62 and the lower longitudinal beam 61 of the support device 6, a plurality of guide square holes 67 are formed on the upper side of the lower longitudinal beam 61, the front ends of the guide mechanisms 66 pass through the guide square holes 67, and under the action of the jacking oil cylinder 5, the relative positions of the middle longitudinal beam 62 and the lower longitudinal beam 61 can be adjusted.

[0025] The intelligent income and expenditure module system further comprises a hydraulic power device, the hydraulic power device 12 comprises a synchronization valve 8, a pressure maintaining valve 9, a pressure valve 10, an oil pipe 11 and a hydraulic station 12, and is used for controlling the synchronous action of the left side die folding oil cylinder 1, the right side die folding oil cylinder 2 and the jacking oil cylinder 5. The hydraulic power device 12 serves as a core power source of the whole system, provides stable and reliable power support for all hydraulic components, and ensures the continuous and efficient operation of the system in the construction process.

[0026] Further, the synchronization valve 8 is connected with the hydraulic station 12 for controlling the synchronous action of the left side mold folding oil cylinder 1, the right side mold folding oil cylinder 2 and the jacking oil cylinder 5. The design of the synchronization valve 8 can ensure that multiple groups of oil cylinders move in unison during the mold closing and mold supporting process, which is crucial for ensuring the overall stability of the mold plate and the construction accuracy. For example, when the left side mold folding oil cylinder 1 and the right side mold folding oil cylinder 2 are unfolded, the synchronization valve 8 can coordinate the speed and force of multiple oil cylinders to avoid position deviation or deformation of the mold plate due to asynchronization. The pressure maintaining valve 9 is connected with the hydraulic station 12 for preventing the mold plate from shrinking after the hydraulic system depressurizes. In actual construction, the hydraulic system may not be able to maintain the predetermined position due to long-term operation or accidental depressurization. The pressure maintaining valve 9 can effectively prevent the mold plate from retracting by maintaining a stable pressure in the hydraulic system, ensuring that the mold plate always remains in the correct working position during construction, thereby improving the safety and quality of construction. The pressure valve 10 is connected with the hydraulic station 12 for controlling the extension and retraction stroke of the oil cylinder according to the preset pressure range. The pressure valve 10 can accurately adjust the size of the hydraulic pressure according to the construction demand. For example, when controlling the lifting of the jacking oil cylinder 5, adjusting the pressure range can ensure that the jacking action is smooth and does not exceed the bearing capacity of the mold plate structure, avoiding damage to the mold plate due to excessive pressure or insufficient support due to insufficient pressure. The oil pipe 11 is connected with the left side mold folding oil cylinder 1, the right side mold folding oil cylinder 2 and the jacking oil cylinder 5 respectively for transmitting the power provided by the hydraulic station 12 to each oil cylinder. The layout and connection mode of the oil pipe 11 are optimized to ensure that the hydraulic oil can quickly and uniformly reach each oil cylinder to achieve efficient operation of the system. Through the transmission of the oil pipe 11, each oil cylinder can act synchronously under the coordination of the synchronization valve 8, thereby realizing stable, efficient and accurate control of the entire system.

[0027] In this embodiment, the jacking traverse mechanism 65 is arranged at both ends of the lower longitudinal beam 61 of the support device 6, and the jacking oil cylinder 5 is arranged between the jacking traverse mechanism 65 and the middle longitudinal beam 62. The jacking traverse mechanism 65 is fixed to the flange plate of the lower longitudinal beam 61 by welding or bolts. The arrangement of the jacking traverse mechanism 65 enables the jacking oil cylinder 5 to be flexibly adjusted in position, thereby meeting the requirements of different construction scenarios for the position of the top mold, increasing the adjustment range of the jacking oil cylinder 5, and making the support device 6 more adaptable to complex geological conditions. For example, when the shape of the tunnel cross section changes, the jacking traverse mechanism 65 can adjust the position of the jacking oil cylinder 5 by moving laterally, thereby ensuring the accurate alignment of the mold plate.

[0028] Further, four guide mechanisms 66 are arranged between the middle longitudinal beam 62 and the lower longitudinal beam 61 of the support device 6, and four guide square holes 67 are formed on the upper surface of the lower longitudinal beam 61, with the front ends of the guide mechanisms 66 penetrating through the guide square holes 67. Under the action of the jacking oil cylinder 5, the relative positions of the middle longitudinal beam 62 and the lower longitudinal beam 61 can be precisely adjusted. The guide mechanisms 66 ensure that the lifting track of the middle longitudinal beam 62 always remains vertical, which is crucial for the stability of the formwork and the construction accuracy. The arrangement of the guide square holes 67 provides a fixed guide path for the guide mechanisms 66, avoiding the deviation or jamming of the middle longitudinal beam 62 during lifting, thereby improving the overall reliability and durability of the support device 6. This structural design optimizes the flexibility of formwork adjustment while maintaining the strength of the support system, ensuring efficient and high-quality tunnel construction.

[0029] In addition, the bottom of the jacking and shifting mechanism 65 is fixed with a shifting device 68, which can shift left and right to fine-tune the overall position of the secondary lining trolley. The design of the shifting device 68 allows the secondary lining trolley to adjust its position flexibly during actual construction, especially in complex tunnel construction environments where high positioning accuracy is required. Through the left and right shifting function of the shifting device 68, the overall position of the secondary lining trolley can be fine-tuned, ensuring accurate alignment of the formwork with the tunnel section. This fine-tuning function not only improves the construction adaptability of the secondary lining trolley, but also effectively reduces the construction quality problems caused by initial positioning errors of the secondary lining trolley, while improving construction efficiency and accuracy.

[0030] In this embodiment, the hydraulic station 12 realizes automatic operation through a PLC control program, which is used to realize the synchronous extension and retraction of the left form folding oil cylinder 1, the right form folding oil cylinder 2, and the jacking oil cylinder 5 according to the preset extension range and pressure value, and automatically adjusts the pressure value to avoid damage to the formwork. The design of the PLC control program can preset the extension range and pressure value according to the construction requirements, ensuring the accuracy and coordination of each oil cylinder action. For example, when performing formwork erection operation, the PLC control program can control the unfolding speed of the left form folding oil cylinder 1 and the right form folding oil cylinder 2 synchronously to ensure that the formwork is evenly stressed on both sides, thereby avoiding tilting or damage of the formwork due to asynchronization.

[0031] The PLC control program includes a one-key operation function for automatically performing the formwork stripping and formwork setting. The one-key operation function allows the operator to complete the entire formwork stripping or setting process by pressing a one-key operation button without manually adjusting the action parameters of each oil cylinder. This design greatly simplifies the operation process, reduces the dependence on the operator's experience, and significantly improves the construction efficiency and the precision of formwork operation. The pressure valve 10 monitors the pressure changes in the hydraulic system through the pressure sensor. When the pressure exceeds the preset value, it automatically adjusts the pressure range. The pressure sensor monitors the pressure inside the hydraulic system in real time and transmits the data to the pressure valve 10, ensuring timely adjustment when the pressure is too high to protect the safety of the system and the formwork structure. For example, during the formwork setting process, if the pressure provided by the hydraulic station 12 exceeds the carrying capacity of the formwork and oil cylinder, the pressure valve 10 will automatically reduce the pressure to a safe range according to the data feedback from the sensor, effectively preventing equipment damage or construction accidents caused by overloading. This pressure regulation function further improves the stability and safety of the system, ensuring the smooth progress of the construction process.

[0032] Specifically, in this embodiment, the operation process of the new two-lining formwork stripping and setting structure is as follows: after the two-lining trolley is positioned, the hydraulic station 12 is started, and first, the 4 oil cylinders of the jacking oil cylinder 5 are controlled to rise synchronously to the predetermined position and then stop. Subsequently, the 8 oil cylinders of the left form folding oil cylinder 1 are controlled to extend synchronously to the predetermined position and then stop, and then the 8 oil cylinders of the right form folding oil cylinder 2 are controlled to extend synchronously to the predetermined position and then stop. After the positioning of the formwork is completed, the pressure maintaining valve 9 is opened to keep the formwork stable, and the two-lining pouring operation can be performed. After the two-lining pouring is completed and the stripping conditions are met, the pressure maintaining valve 9 is closed, and the stripping operation is performed in the reverse order: first, the 8 oil cylinders of the left form folding oil cylinder 1 are controlled to retract synchronously to the initial position, then the 8 oil cylinders of the right form folding oil cylinder 2 are controlled to retract synchronously, and finally, the 4 oil cylinders of the jacking oil cylinder 5 are controlled to descend synchronously to the initial position, completing the formwork stripping action. The entire process is highly intelligent, convenient and precise to operate, providing an efficient and reliable solution for tunnel construction.

[0033] In summary, the utility model discloses a kind of intelligent collection and distribution mould systems for two lining trolley, by optimizing hydraulic power device, the synchronous control and automation operation of left side mould folding oil cylinder 1, right side mould folding oil cylinder 2 and jacking oil cylinder 5 are realized, can be according to preset order and pressure value accurate execution collection mould and mould task of support.It is replaced by the traditional mechanical support piece that the utility model uses pressure maintaining valve 9, synchronization valve 8 and pressure valve 10 etc.Hydraulic assembly, significantly simplify structure, reduce trolley weight, reduce manual operation intensity and construction time simultaneously.The design of guiding mechanism 66 and jacking horizontal moving mechanism 65, further improve the adjusting flexibility of system and the accuracy of formwork movement, ensure the smooth operation of formwork and construction quality.Intelligent collection and distribution mould system of the utility model not only improves operating efficiency and safety, but also enhances the adaptability of trolley to different tunnel section, provides a kind of efficient, intelligent and stable solution for tunnel construction, with wide application prospect and popularization value.

[0034] The above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; under the idea of the utility model, the technical features in the above examples or different examples can also be combined, steps can be implemented in any order, and there are many other changes of different aspects of the utility model as described above, which are not provided in details for simplicity; although the utility model is described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of technical features; and these modifications or replacements do not make the essence of corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. An intelligent pay-off system for a two-liner buggy, characterized by, It includes left side mold folding oil cylinder (1), right side mold folding oil cylinder (2), jacking oil cylinder (5), support device (6), the left side mold folding oil cylinder (1) is connected with the left side's column connecting piece (3) and side mold connecting piece (4), is used to control the contraction and expansion of left side mold, right side mold folding oil cylinder (2) is connected with the right side's column connecting piece (3) and side mold connecting piece (4), is used to control the contraction and expansion of right side mold, the support device (6) includes lower longitudinal beam (61), middle longitudinal beam (62), support column (63) and upper longitudinal beam (64), the jacking oil cylinder (5) is installed on the lower longitudinal beam (61), is connected with middle longitudinal beam (62) through jacking oil cylinder connecting piece (7), the middle longitudinal beam (62) upper side symmetry is provided with support column (63), the upper longitudinal beam (64) is arranged at the top of both sides support column (63), the upper longitudinal beam (64) is fixed with top die, the jacking oil cylinder (5) controls the lifting of top die through support device (6), multiple guide mechanisms (66) are arranged between the middle longitudinal beam (62) and the lower longitudinal beam (61) of support device (6), multiple guide square holes (67) are formed in the upper surface of the lower longitudinal beam (61), the front end of the guide mechanism (66) passes through the guide square hole (67), under the action of the jacking oil cylinder (5), the relative position of the middle longitudinal beam (62) and the lower longitudinal beam (61) can be adjusted.

2. The smart pay-off system for a two-liner buggy of claim 1, wherein, It also includes hydraulic power device, the hydraulic power device includes synchronization valve (8), pressure maintaining valve (9), pressure valve (10), oil pipe (11) and hydraulic station (12), is used to control the synchronous action of left side mold folding oil cylinder (1), right side mold folding oil cylinder (2) and jacking oil cylinder (5).

3. The smart pay-off system for a two-liner buggy of claim 2, wherein, The synchronization valve (8) is connected with the hydraulic station (12), is used to control the synchronous action of left side mold folding oil cylinder (1), right side mold folding oil cylinder (2) and jacking oil cylinder (5).

4. The smart pay-off system for a two-liner buggy of claim 2, wherein, The pressure maintaining valve (9) is connected with the hydraulic station (12), is used to prevent the shrinkage of formwork after the pressure relief of hydraulic system.

5. The smart pay-off system for a two-liner buggy of claim 2, wherein, The pressure valve (10) is connected with the hydraulic station (12), is used to control the telescopic stroke of oil cylinder according to preset pressure range.

6. The smart pay-off system for a two-liner buggy of claim 2, wherein, The oil pipe (11) is connected with left side mold folding oil cylinder (1), right side mold folding oil cylinder (2) and jacking oil cylinder (5) respectively.

7. The intelligent pay-off system for a two-liner buggy of any of claims 1-6, wherein, The lower longitudinal beam (61) of support device (6) is provided with jacking horizontal moving mechanism (65) at both ends, and the jacking oil cylinder (5) is arranged between the jacking horizontal moving mechanism (65) and the middle longitudinal beam (62).

8. The smart pay-off system for a two-liner buggy of claim 7, wherein, The bottom of the jacking horizontal moving mechanism (65) is fixed with horizontal moving device (68).

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