Combined equipment construction method beneficial to tunnel turning

Abstract

A combined equipment construction method beneficial to tunnel turning, the straight section construction method comprising: three needle beams are detachably connected into an integral needle beam through connecting pieces; the first trolley and the second trolley are detachably connected into an integral trolley, and the integral needle beam is arranged through the integral trolley; the integral trolley is movable along the integral needle beam; the turning section construction method comprising: the integral trolley is split into the first trolley and the second trolley, and the integral needle beam is split into needle beam one, needle beam two and needle beam three, so that the first trolley moves in cooperation with the needle beam one, and the second trolley moves in cooperation with the needle beam two; when the first trolley and the second trolley turn, the formwork is driven to shrink through an oil cylinder.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tunnel construction, in particular to a combined equipment construction method for facilitating tunnel turning. BACKGROUND

[0002] The trolley, full name lining trolley, is mainly used for tunnel, diversion tunnel, secondary lining (secondary lining) concrete pouring. The trolley is divided into two structures, one is a through type, and the other is a needle beam type. The trolley is mainly composed of a gantry and a formwork. The gantry mainly bears the weight, and the formwork is designed according to the shape of the tunnel. It has the advantages of automatic walking, hydraulic automatic positioning and demolding (it can realize up, down, left and right movement).

[0003] In actual engineering practice, the following problems exist:

[0004] I. When the needle beam trolley passes through the tunnel, the space occupied by the trolley can be controlled by moving the formwork to increase the passability as much as possible, which is called demolding in professional terms. The movement of the formwork is driven and controlled by the oil cylinder. As we all know, the driving and control of the oil cylinder is realized by a multi-way valve, which controls the oil inlet and oil outlet of the two sides of the piston in the oil cylinder.

[0005] In the prior art, a single formwork of the needle beam trolley is driven by more than one driving oil cylinder. The driving oil cylinders are often paired at the same height. At this time, it is necessary to keep the synchronization of the two driving oil cylinders as much as possible.

[0006] II. As mentioned above, the problem of keeping the synchronization of the two driving oil cylinders is solved by using a shunt technical solution. However, for the shunt of the multi-way valve, the two fluid paths drive the piston of one oil cylinder to move in one direction during shunting. However, when the piston moves in the opposite direction, backflow occurs. The backflow of the two shunt oil liquids returns to one multi-way valve at the same time, which causes a certain degree of oil path congestion and water hammer phenomenon.

[0007] III. In the prior art, the oil pipe between the multi-way valve and the oil cylinder may be broken and leaked during construction in harsh environments or after long-term use. At this time, if oil is supplied from the multi-way valve to the oil cylinder, the leakage cannot be discovered and controlled in time.

[0008] IV. In the prior art, spring return technology is common, but in many working conditions, the spring has to work in a liquid environment and is corroded. At the same time, the spring and the spring rod are affected by the impact force of the liquid in the flow path, which causes the spring to work abnormally or affects its service life.

[0009] V. In the sliding block connecting rod spring structure, if the connecting rod is connected with the sliding block and moves with the sliding block when the sliding block moves left and right, the connecting rod will not always be in contact with the sliding plug, and the sliding plug is easy to be pushed open by oil pressure, so that oil enters the spring cavity.

[0010] Six, the longer connecting rod will result in stiffness reduction.

[0011] Seven, the existing technology trolley is limited in small curve radius, and the conventional lining trolley of a water conservancy tunnel is designed as two sections of 7.5 m + 4.5 m. When a straight section is constructed, the two sections are combined into a 12 m long whole to work. When a curved section is constructed, the 7.5 m long trolley is removed, and a 4.5 m long trolley is used for lining work. When the trolley enters a straight section again, the 7.5 m long trolley needs to be assembled again and combined with the 4.5 m long trolley to work. In the case of many curved sections of the tunnel, the trolley needs to be repeatedly assembled and removed, and the single construction length of the curved section is only 4.5 m, the lining efficiency is low, the construction progress is slow, and the trolley assembling and removing process is time-consuming and laborious. SUMMARY

[0012] In order to overcome the above problems, the present application provides a solution that simultaneously solves the above multiple problems.

[0013] The technical scheme adopted by the present application to solve its technical problems is: a combined equipment construction method beneficial to tunnel turning, the combined equipment comprising a trolley and a needle beam; the trolley is divided into a first trolley and a second trolley, and each of the first trolley and the second trolley comprises a hydraulic module, a trolley frame and a formwork; the hydraulic module comprises a cylinder and a control valve, and the control valve controls the on-off of an oil path to the cylinder; the trolley frame is provided with the cylinder, and the cylinder drives the formwork to move; the needle beam comprises a needle beam one, a needle beam two and a needle beam three; the construction method comprises a straight section construction method and a turning section construction method.

[0014] The control valve comprises a valve body, a driving device, a main piston, a valve rod, a secondary piston, a driving rod, a first oil outlet, a second oil outlet, a return oil port, an oil inlet, a main oil path, a buffer cavity, a bridge type communication path, a flow guide block, a shunt communication path, a first vertical flow path, a second vertical flow path, a sliding block, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, a seventh connecting rod, an eighth connecting rod, a spring cavity, a sliding plug and a spring; the shunt communication path comprises a left flow path and a right flow path.

[0015] The driving device is connected to one end of the secondary piston through the driving rod, the other end of the secondary piston is connected to one end of the valve rod, the other end of the valve rod is connected to the main piston, and the main piston can move in the inner cavity of the valve body; in a first state, the main piston blocks the main oil path, in a second state, the main piston blocks the return oil port to make the oil inlet and the main oil path communicate, and in a third state, the main piston blocks the oil inlet to make the main oil path and the return oil port communicate.

[0016] The main oil way is provided with a buffer cavity at the upper end, the wall of the buffer cavity comprises a curved surface, a flow guide block is arranged in the buffer cavity, a left flow path is arranged at the left end of the buffer cavity, a right flow path is arranged at the right end of the buffer cavity, a first vertical flow path is connected above the left flow path, a second vertical flow path is connected above the right flow path, and the first vertical flow path and the second vertical flow path are communicated through a bridge type communication path; the bridge type communication path is provided with a first oil outlet and a second oil outlet above, and a sliding block is arranged in the bridge type communication path;

[0017] The left end of the sliding block is connected with a first connecting rod and a second connecting rod, and the right end of the sliding block is connected with a third connecting rod and a fourth connecting rod; the distance between the first connecting rod and the second connecting rod is greater than the diameter size of the left flow path; the left end of the first connecting rod is provided with a fifth connecting rod, and the right end of the first connecting rod and the fifth connecting rod is movable and abuts or separated; the left end of the fifth connecting rod is connected with a sliding plug, the sliding plug and a spring are arranged in a spring cavity, the spring cavity and the bridge type communication path are connected through a through hole, and the fifth connecting rod blocks the through hole;

[0018] The linear segment construction method comprises the following steps: three needle beams are detachably connected into an integral needle beam through connecting pieces; the first trolley and the second trolley are detachably connected into an integral trolley, and the integral needle beam is arranged to penetrate through the integral trolley; and the integral trolley is movable along the integral needle beam.

[0019] The turning segment construction method comprises the following steps: the integral trolley is split into a first trolley and a second trolley, and the integral needle beam is split into a needle beam one, a needle beam two and a needle beam three, so that the first trolley and the needle beam one are moved in cooperation, and the second trolley and the needle beam two are moved in cooperation; and when the first trolley and the second trolley turn, the formwork is driven to shrink through an oil cylinder.

[0020] Preferably, the distance between the third connecting rod and the fourth connecting rod is greater than the diameter size of the right flow path.

[0021] Preferably, the left end of the second connecting rod is provided with a sixth connecting rod, and the right end of the second connecting rod and the sixth connecting rod is movable and abuts or separated.

[0022] Preferably, the right end of the third connecting rod is provided with a seventh connecting rod, and the left end of the third connecting rod and the seventh connecting rod is movable and abuts or separated.

[0023] Preferably, the right end of the fourth connecting rod is provided with an eighth connecting rod, and the left end of the fourth connecting rod and the eighth connecting rod is movable and abuts or separated.

[0024] Preferably, the diameter of the main oil way is greater than the diameter of the first oil outlet.

[0025] Preferably, the sliding plug is cylindrical.

[0026] Preferably, the diameter of the sliding plug is greater than the diameter of the fifth connecting rod.

[0027] Preferably, the upper surface area of the sliding block is greater than the cross-sectional area of the first oil outlet.

[0028] Preferably, the driving device is an electromagnetic driving device.

[0029] The beneficial effects of the present application are:

[0030] I. The first point raised in the background art is that by setting a synchronization oil path in the multi-way valve, the two oil outlets in the multi-way valve are simultaneously opened and closed, ensuring the synchronization of the oil inlet in the corresponding two oil cylinders that need to be synchronized.

[0031] II. The second point raised in the background art is that a buffer cavity is arranged in the synchronization oil path of the multi-way valve, so that the oil concentration caused by the convergence of the oil liquid during the return of the two oil paths is buffered, and an arc surface and a guide slope are arranged in the buffer cavity to further guide the oil liquid.

[0032] III. The third point raised in the background art is that a first communication path and a second communication path are arranged in the synchronization oil path, the first communication path is a shunt path that delivers oil liquid to two oil paths, and the second communication path is a bridge type communication path that overhangs and communicates two oil paths, and a sliding block is arranged in the bridge type communication path. When a leak occurs in the oil pipe of one oil path, the pressure in the oil path will decrease, at which time the oil pressure in the other oil path will push the sliding block in the bridge type communication path to move in the direction of the one oil path, thereby gradually reducing the opening degree of the one oil path to reduce the leakage until the subsequent sensor or staff discovers and stops.

[0033] IV. The fourth point raised in the background art is that the sliding block is driven by the pressure at both ends, and the sliding block is connected to the spring through two connecting rods (i.e. spring top rods) and a sliding plug; the sliding plug and the spring are located in the spring cavity, the connecting rods and the sliding plug are sealed between their respective through holes, thereby constructing multiple seals, so that the spring in the spring cavity avoids the liquid environment, and the distance between the two connecting rods is greater than the diameter of the flow path, thereby avoiding direct impact of the connecting rods by the fluid.

[0034] V. The fifth point raised in the background art is that the connecting rod is arranged in connection with the sliding plug, so that even if the sliding block moves in one direction and separates from the connecting rod, the connecting rod still blocks the inlet through hole of the spring cavity. At this time, even if the pressure pushes the connecting rod to move in the direction of the spring to overcome the spring force, due to the length factor of the connecting rod, the connecting rod will not completely enter the spring cavity, so the connecting rod still blocks the inlet through hole of the spring cavity, thereby achieving sealing during the entire working process. If there is no connecting rod or the connecting rod is not connected to the sliding plug, the sliding plug will be directly pushed towards the spring, which will cause the fluid to enter the spring cavity and be difficult to discharge.

[0035] Sixth, the long connecting rod is reduced in rigidity, so the connecting rod is divided into two, one connected by a sliding plug and one connected by a sliding block, which can ensure the sealing effect of the fifth point and shorten the length of the connecting rod to improve the rigidity.

[0036] Seven, the seventh point raised in the background art, by optimizing the structure of the trolley demolding, increasing the empty space after demolding, the 6m long trolley can move forward at the bend without touching the tunnel wall after demolding, so that the single ring lining construction length is changed from the conventional 4.5m to 6m. The 12m long trolley is divided into 6m+6m two sections for design and processing. When the conventional section (general bending radius R>200m) is constructed, the two sections are connected as a whole for operation, and the single lining is 12m. When the construction enters the small curve radius section (general bending radius R<200m, minimum radius 50m), the trolley is divided, the front 6m section performs lining operation, and the rear 6m section follows the lining surface synchronously.

[0037] Note: The above designs are not in any particular order, and each one makes the present invention have a significant progress compared to the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0038] The present application will be further described below in conjunction with the drawings and examples.

[0039] Figure 1 It is an appearance view of the valve body integrated module of the present application.

[0040] Figure 2 It is a cross-sectional view of the valve in the closed state of the present application.

[0041] Figure 3 It is a cross-sectional view of the valve in the oil inlet state of the present application.

[0042] Figure 4 It is a cross-sectional view of the valve in the oil return state of the present application.

[0043] Figure 5 It is a cross-sectional view of the valve in the oil return state of the present application. Figure 2

[0044] Figure 6 It is a working principle diagram of the sliding block assembly in the bridge type communication path of the present application.

[0045] Figure 7 It is a front view of the trolley showing the relationship between the template and the oil cylinder drive of the present application.

[0046] Figure 8 It is a schematic diagram of the trolley combination running in the tunnel of the present application.

[0047] Figure 9 It is a schematic diagram of the trolley combination running in the straight section of the present application.

[0048] Figure 10 ​Step one for the trolley combination of the invention to run in the turning section

[0049] Figure 11 Step two for the trolley combination of the invention to run in the turning section

[0050] Figure 12 Step three for the trolley combination of the invention to run in the turning section

[0051] In the figure, the reference signs are as follows:

[0052] 1, valve body, 2, first oil outlet, 3, second oil outlet, 4, oil return port, 5, oil inlet, 6, main piston, 7, valve stem, 8, auxiliary piston, 9, drive rod, 10, drive device, 11, main oil path, 12, buffer cavity, 13, bridge type communication path, 14, flow guide block, 15, left flow path, 16, right flow path, 17, first vertical flow path, 18, second vertical flow path, 19, sliding block, 20, first connecting rod, 21, second connecting rod, 22, third connecting rod, 23, fourth connecting rod, 24, fifth connecting rod, 25, sixth connecting rod, 26, seventh connecting rod, 27, eighth connecting rod, 28, spring cavity, 29, sliding plug, 30, spring, 31, top die plate, 32, first side die plate, 33, second side die plate, 34, third side die plate, 35, fourth side die plate, 36, bottom die plate, 37, oil cylinder, 38, straight section, 39, turning section, 40, first trolley, 41, second trolley, 42, needle beam one, 43, needle beam two, 44, needle beam three. DETAILED DESCRIPTION

[0053] As shown in the figure: a combined equipment construction method for tunnel turning, the combined equipment includes a trolley and a needle beam; the trolley is divided into a first trolley and a second trolley, and each of the first trolley and the second trolley includes a hydraulic module, a trolley frame and a die plate; the hydraulic module includes an oil cylinder and a control valve, and the control valve controls the on-off of an oil path to the oil cylinder; the trolley frame is provided with the oil cylinder, and the oil cylinder drives the die plate to move; the needle beam includes a needle beam one, a needle beam two and a needle beam three; the construction method includes a straight section construction method and a turning section construction method.

[0054] The control valve includes a valve body, a drive device, a main piston, a valve stem, an auxiliary piston and a drive rod, and the valve body is provided with a first oil outlet, a second oil outlet, an oil return port, an oil inlet, a main oil path, a buffer cavity, a bridge type communication path, a flow guide block, a shunt communication path, a first vertical flow path, a second vertical flow path, a sliding block, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, a seventh connecting rod, an eighth connecting rod, a spring cavity, a sliding plug and a spring; the shunt communication path includes a left flow path and a right flow path.

[0055] The driving device is connected with one end of the auxiliary piston through a driving rod, the other end of the auxiliary piston is connected with one end of the valve rod, the other end of the valve rod is connected with the main piston, and the main piston can move in the inner cavity of the valve body; in the first state, the main piston blocks the main oil path, in the second state, the main piston blocks the oil return port to make the oil inlet communicate with the main oil path, and in the third state, the main piston blocks the oil inlet to make the main oil path communicate with the oil return port;

[0056] The main oil path is provided with a buffer cavity at the upper end, the wall of the buffer cavity comprises a curved surface, a flow guide block is arranged in the buffer cavity, a left flow path is arranged at the left end of the buffer cavity, and a right flow path is arranged at the right end of the buffer cavity; the upper part of the left flow path is connected with a first vertical flow path, the upper part of the right flow path is connected with a second vertical flow path, and the first vertical flow path and the second vertical flow path are communicated through a bridge type communication path; the bridge type communication path is provided with a first oil outlet and a second oil outlet at the upper part, and a sliding block is arranged in the bridge type communication path.

[0057] The left end of the sliding block is connected with a first connecting rod and a second connecting rod, and the right end of the sliding block is connected with a third connecting rod and a fourth connecting rod; the distance between the first connecting rod and the second connecting rod is greater than the diameter size of the left flow path; the left end of the first connecting rod is provided with a fifth connecting rod, the right end of the first connecting rod and the fifth connecting rod can be movably abutted or separated; the left end of the fifth connecting rod is connected with a sliding plug, the sliding plug and a spring are arranged in a spring cavity, the spring cavity and the bridge type communication path are connected through a through hole, and the fifth connecting rod blocks the through hole.

[0058] The linear segment construction method comprises the following steps: three needle beams are detachably connected into an integral needle beam through connecting pieces; the first trolley and the second trolley are detachably connected into an integral trolley, and the integral needle beam is arranged to penetrate through the integral trolley; and the integral trolley can move along the integral needle beam.

[0059] The turning segment construction method comprises the following steps: the integral trolley is split into a first trolley and a second trolley, and the integral needle beam is split into a needle beam one, a needle beam two and a needle beam three, so that the first trolley and the needle beam one are moved in cooperation, and the second trolley and the needle beam two are moved in cooperation; when the first trolley and the second trolley turn, the formwork is driven to shrink through an oil cylinder.

[0060] As shown in the figure: the distance between the third connecting rod and the fourth connecting rod is greater than the diameter size of the right flow path. The left end of the second connecting rod is provided with a sixth connecting rod, and the right end of the second connecting rod and the sixth connecting rod can be movably abutted or separated. The right end of the third connecting rod is provided with a seventh connecting rod, and the left end of the third connecting rod and the seventh connecting rod can be movably abutted or separated. The right end of the fourth connecting rod is provided with an eighth connecting rod, and the left end of the fourth connecting rod and the eighth connecting rod can be movably abutted or separated. The diameter of the main oil path is greater than the diameter of the first oil outlet. The sliding plug is cylindrical. The diameter of the sliding plug is greater than the diameter of the fifth connecting rod. The upper surface area of the sliding block is greater than the cross-sectional area of the first oil outlet. The driving device is an electromagnetic driving device.

[0061] Figure 7The oil passage relationship between the middle multi-way valve and the oil cylinder is not shown. Since the oil passage structure for controlling the oil inlet and outlet between the multi-way valve and the oil cylinder is relatively simple and well-known, it is not necessary to specially draw a diagram for the intermediate oil connection pipe under the premise that the oil inlet and outlet switching structure has been described. In order to simplify the length, it will not be described and drawn again.

[0062] Figure 10 In order to disassemble the first and second trolleys, Figure 11 In order to disassemble the needle beam three, Figure 12 In order to move the first trolley and the needle beam one cooperatively, and move the second trolley and the needle beam two cooperatively.

[0063] The above detailed description is a specific description of the feasible embodiments of the present application, which is not used to limit the patent scope of the present application. Any equivalent implementation or change without departing from the present application shall be included in the patent scope of the present application.

Claims

1. A method of combined equipment construction for facilitating tunnel turning, characterized by: The combined device comprises a trolley, a needle beam; the trolley is divided into a first trolley and a second trolley, and the first trolley and the second trolley each comprise a hydraulic module, a trolley frame and a template; the hydraulic module comprises a cylinder and a control valve, the control valve controls the opening and closing of an oil passage to the cylinder; the trolley frame is provided with the cylinder, and the cylinder drives the template to move; the needle beam comprises a needle beam one, a needle beam two and a needle beam three; the construction method comprises a straight section construction method and a turning section construction method; The control valve comprises a valve body, a driving device, a main piston, a valve rod, a secondary piston, a driving rod, a first oil outlet, a second oil outlet, an oil return port, an oil inlet, a main oil passage, a buffer cavity, a bridge type communication passage, a flow guide block, a shunt communication passage, a first vertical flow passage, a second vertical flow passage, a sliding block, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, a seventh connecting rod, an eighth connecting rod, a spring cavity, a sliding plug and a spring; The driving device is connected to one end of the secondary piston through the driving rod, the other end of the secondary piston is connected to one end of the valve rod, the other end of the valve rod is connected to the main piston, and the main piston can move in the inner cavity of the valve body; in the first state, the main piston blocks the main oil passage, in the second state, the main piston blocks the oil return port to make the oil inlet and the main oil passage communicate, and in the third state, the main piston blocks the oil inlet to make the main oil passage and the oil return port communicate; The upper end of the main oil passage is provided with the buffer cavity, the buffer cavity wall comprises a curved surface, the buffer cavity is provided with the flow guide block, the left end of the buffer cavity is provided with the left flow passage, and the right end is provided with the right flow passage, the upper end of the left flow passage is connected to the first vertical flow passage, the upper end of the right flow passage is connected to the second vertical flow passage, and the first vertical flow passage and the second vertical flow passage are connected through the bridge type communication passage; the upper end of the bridge type communication passage is provided with the first oil outlet and the second oil outlet, and the bridge type communication passage is provided with the sliding block; The left end of the sliding block is connected with the first connecting rod and the second connecting rod, and the right end of the sliding block is connected with the third connecting rod and the fourth connecting rod; the distance between the first connecting rod and the second connecting rod is greater than the diameter size of the left flow passage; the left end of the fifth connecting rod is provided with the fifth connecting rod, and the right end of the first connecting rod and the fifth connecting rod can be movably abutted or separated; the left end of the fifth connecting rod is connected with the sliding plug, the sliding plug and the spring are arranged in the spring cavity, the spring cavity and the bridge type communication passage are connected through a through hole, and the fifth connecting rod blocks the through hole; The straight section construction method comprises that three needle beams are detachably connected into an integrated needle beam through connecting pieces; the first trolley and the second trolley are detachably connected into an integrated trolley, and the integrated needle beam is arranged through the integrated trolley; the integrated trolley can move along the integrated needle beam; The turning section construction method comprises that the integrated trolley is divided into the first trolley and the second trolley, the integrated needle beam is divided into the needle beam one, the needle beam two and the needle beam three, the first trolley is moved in cooperation with the needle beam one, and the second trolley is moved in cooperation with the needle beam two; when the first trolley and the second trolley turn, the template is driven to shrink through the cylinder.

2. The combined equipment construction method for facilitating a tunnel turn according to claim 1, characterized in that: The distance between the third connecting rod and the fourth connecting rod is greater than the diameter size of the right flow passage.

3. The method according to claim 1, wherein: The left end of the second connecting rod is provided with the sixth connecting rod, and the right end of the second connecting rod and the sixth connecting rod can be movably abutted or separated.

4. The method according to claim 3, wherein: The third connecting rod is provided with a seventh connecting rod at the right end, and the left end of the seventh connecting rod is movably abutted or separated from the third connecting rod.

5. The method according to claim 4, wherein: The fourth connecting rod is provided with an eighth connecting rod at the right end, and the left end of the eighth connecting rod is movably abutted or separated from the fourth connecting rod.

6. The method of claim 1, wherein: The diameter of the main oil path is greater than the diameter of the first oil outlet.

7. The method according to claim 1, wherein: The sliding plug is cylindrical.

8. The method according to claim 7, wherein: The diameter of the sliding plug is greater than the diameter of the fifth connecting rod.

9. The method of claim 1, wherein: The upper surface area of the sliding block is greater than the cross-sectional area of the first oil outlet.

10. The method of claim 1, wherein: The driving device is an electromagnetic driving device.

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