CN212803228U

CN212803228U - Shield translation device

Info

Publication number: CN212803228U
Application number: CN202021198171.7U
Authority: CN
Inventors: 张平; 刘国栋; 余正新; 平先碧; 雷春庆
Original assignee: CCCC Second Harbor Engineering Co
Current assignee: CCCC Second Harbor Engineering Co
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-03-26
Anticipated expiration: 2030-06-24

Abstract

The utility model provides a shield constructs translation device, including centre gripping thrustor and hydraulic system, centre gripping thrustor structure is: base one side is equipped with thrust cylinder, the base both sides are articulated to have the centre gripping wall, centre gripping wall upper end is articulated with connecting rod one end, the connecting rod other end is articulated with the flexible end of centre gripping hydro-cylinder, hydraulic system is connected with thrust cylinder and centre gripping hydro-cylinder, shield structure machine translation advancing system that can automatic control, shorten shield structure machine translation time limit for a project, reduce constructor, make full use of and not destroying the shield and tunneling construction materials, construction cost is reduced, shield structure machine translation advancing device, translation advancing device can provide sufficient propulsion counter-force, and can not destroy the guide rail, do not increase the steel sheet and regard as the bottom welt, translation advancing device can stretch out automatically and retract, and can fixed position in order to provide sufficient. Meanwhile, the counter-force support can move forward along with the oil cylinder, and the shield tunneling machine translation and air pushing are completed in a reciprocating cycle mode.

Description

Shield translation device

Technical Field

The utility model belongs to the technical field of the shield translation and specifically relates to a shield translation device is related to.

Background

With the continuous development of urban rail transit in China, shield construction methods are more and more applied to the construction of various engineering fields, particularly to central cities at home and abroad, and the construction of domestic main urban subways develops explosively in order to solve the traffic pressure in busy urban areas.

With the common application of shield construction methods, shield construction technologies are gradually mature, construction process gradually tends to be standardized and streamlined, and meanwhile, a large number of new shield construction methods and new technologies are produced in order to meet the requirements of construction in urban busy areas and some special projects. The novel shield technology not only solves the construction problems which are difficult to solve by the conventional technology, but also greatly improves the efficiency, precision and safety of the shield technology.

In the construction of the shield method tunnel engineering, various unpredictable working conditions occur due to the influence of factors such as the restriction of construction process and site conditions, the starting and receiving translation of the shield machine is one of the working conditions, the shield machine cannot be hoisted and installed (dismantled) at one time, and the shield machine needs to be shifted for two or more times such as longitudinal and transverse shifting or posture adjustment under a wellhead or in a tunnel; the conventional hoisting and traction steel rail translation method, the steel plate sliding method and the like have mature translation technology of the shield tunneling machine at present, and the current main research direction is to improve the translation speed and increase the construction cost by utilizing the existing resources without increasing or as little as possible.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a shield constructs translation device, solves the problem that shield constructs the machine translation and need to carry out secondary or a lot of shifts such as the adjustment of indulging horizontal aversion or gesture in well head below or tunnel.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides a shield constructs translation device, includes centre gripping thrustor and hydraulic system, and centre gripping thrustor structure is: a propelling oil cylinder is arranged on one side of the base, clamping walls are hinged to two sides of the base, the upper end of each clamping wall is hinged to one end of a connecting rod, the other end of each connecting rod is hinged to the telescopic end of each clamping oil cylinder, and a hydraulic system is connected with the propelling oil cylinder and the clamping oil cylinders;

the clamping oil cylinder pushes the connecting rod to enable the lower end of the clamping wall to be clamped on two sides of the track, and the shield is pushed by the propelling oil cylinder.

In the preferred scheme, a groove body is arranged below the base and is arranged on the track.

In the preferred scheme, the centre gripping wall is a plurality of, and the connecting rod is a plurality of, and a plurality of connecting rod tip pass through the connecting block and the flexible end hinge of centre gripping hydro-cylinder.

In the preferred scheme, the clamping wall is hinged with the base through a pin shaft.

In the preferred scheme, the hydraulic system comprises a hydraulic pump, the hydraulic pump is communicated with the clamping oil cylinder through a first electromagnetic directional valve, and the hydraulic pump is communicated with the propelling oil cylinder through a second electromagnetic directional valve.

In a preferable scheme, one-way valves are arranged between the first electromagnetic reversing valve and the hydraulic pump, and between the second electromagnetic reversing valve and the hydraulic pump.

In a preferable scheme, a pressure reducing valve is arranged between the first electromagnetic directional valve and the hydraulic pump.

In a preferable scheme, an electric control overflow valve is arranged between the second electromagnetic directional valve and the oil tank.

In the preferred scheme, a filter is arranged between the hydraulic pump and the oil tank, and a thermometer is arranged on the oil tank.

In the preferred scheme, an electric control handle is arranged and is electrically connected with the hydraulic pump, the first electromagnetic reversing valve and the second electromagnetic reversing valve.

The utility model provides a shield constructs translation device through the research of shield structure machine translation device, studies out one set of shield structure machine translation advancing system that can automatic control, shortens shield structure machine translation time limit for a project, reduces constructor, make full use of and not destroying the shield and tunnelling construction materials, reduce construction cost.

The existing translation technology is basically that steel plates are fully paved or steel rails are perforated, so that the laying cost of a translation route is high, and the steel structure is damaged by welding and perforation, so that the service life is influenced or the repair is time-consuming and labor-consuming.

The research is dedicated to develop a set of hydraulic propulsion system which does not need steel plates, does not damage the steel rail structure and can automatically complete the propulsion process.

The shield translation device is a device for providing support for stepping action of a shield machine, and the device mainly works according to the principle that after a receiving frame is arranged on the shield machine, double beams are disconnected from a shield tail. The clamping mechanism provides power through a hydraulic pump station to realize that the clamping mechanism clamps the track and then fixes the track, and meanwhile, the horizontal pushing oil cylinder extends to push the receiving frame to move forwards to realize the integral translation of the shield tunneling machine.

The shield constructs quick-witted translation advancing device, translation advancing device can provide sufficient propulsion counter-force, and can not destroy the guide rail, does not increase the steel sheet and as the bottom welt, and translation advancing device can stretch out automatically and retract to can fix the position in order to provide sufficient counter-force. Meanwhile, the counter-force support can move forward along with the oil cylinder, and the shield tunneling machine translation and air pushing are completed in a reciprocating cycle mode.

Drawings

The invention will be further explained with reference to the following figures and examples:

FIG. 1 is a general block diagram of the present invention;

FIG. 2 is a general structure diagram of the reinforcing crossarm of the present invention;

FIG. 3 is a general structure diagram of the wheel seat of the present invention;

FIG. 4 is a cross-sectional structural view of the wheel seat of the present invention;

FIG. 5 is a structural view of the brake lock of the present invention;

FIG. 6 is a sectional view of the brake lock of the present invention;

FIG. 7 shows the present invention

In the figure: a track 1; a base 2; a pin shaft 3; a clamping cylinder 4; a connecting rod 5; a connecting block 6; a clamping wall 7; a propulsion cylinder 8; a hydraulic pump 9; a filter 10; a first electromagnetic directional valve 11; a second electromagnetic directional valve 12; a pressure reducing valve 13; an electrically controlled overflow valve 14; a stopper 15; a trolley rail 16.

Detailed Description

Example 1

As shown in FIGS. 1-7, a shield translation device comprises a clamping pushing device and a hydraulic system, wherein the clamping pushing device is structurally characterized in that: a propelling oil cylinder 8 is arranged on one side of the base 2, clamping walls 7 are hinged to two sides of the base 2, the upper end of each clamping wall 7 is hinged to one end of the connecting rod 5, the other end of each connecting rod 5 is hinged to the telescopic end of the corresponding clamping oil cylinder 4, and the hydraulic system is connected with the propelling oil cylinder 8 and the corresponding clamping oil cylinder 4; the clamping oil cylinder 4 pushes the connecting rod 5 to enable the lower end of the clamping wall 7 to be clamped on two sides of the track 1, and the shield is pushed through the propelling oil cylinder 8. With the structure, the shield translation device mainly comprises 1 set of hydraulic system, 2 sets of clamping system, 1 set of control system and 2 sets of pushing system.

The hydraulic system is responsible for providing power for the shield translation device and is divided into a clamping structure and a pushing structure, the working pressure of the clamping structure is set to be 7.5MPa, the working pressure of the pushing structure is set to be 35MPa, and the working pressure of the clamping structure can be adjusted according to the self weight of the shield machine so as to ensure that the clamping system can provide enough counter force.

The clamping system provides support counter force for the shield translation device and consists of a clamping structure and a support structure, wherein the clamping structure is powered by a hydraulic system, and an oil cylinder stretches and retracts to drive a connecting rod part and push a clamp to clamp a steel rail so as to provide friction counter force for the support structure; the supporting structure is a fixed structure of the shield translation device and provides support for the clamping structure and the pushing oil cylinder, and the supporting structure is connected with the pushing oil cylinder through a flange.

The pushing system consists of two split hydraulic jacks, is a working part of the shield translation device, and is connected with the receiving frame of the shield tunneling machine and the supporting structure of the clamping system by flanges.

The control system is a control part of the shield translation device and mainly comprises a control handle and a control valve, and can control clamping and loosening, jacking and retraction of the device.

In the preferred scheme, a groove body is arranged below the base 2 and arranged on the track 1. With the structure, the air conditioner has the advantages that,

in the preferred scheme, centre gripping wall 7 is a plurality of, and connecting rod 5 is a plurality of, and a plurality of connecting rod 5 tip pass through connecting block 6 and the flexible end hinge of centre gripping hydro-cylinder 4. With the structure, the air conditioner has the advantages that,

in a preferred scheme, the clamping wall 7 is hinged with the base 2 through a pin shaft. According to the structure, a power unit and a control unit in the shield translation device are customized and are correspondingly configured according to parameters of field shield equipment or other large-scale equipment, mainly, a clamping mechanism needs to be designed and checked, the clamping mechanism clamps the steel rail web by extending a clamping oil cylinder on a supporting structure base 2 and pushing a connecting rod to drive a clamping arm, and the steel rail web is clamped by taking a pin shaft on the supporting structure base as a fulcrum to provide supporting force for shield translation.

In a preferable scheme, the hydraulic system comprises a hydraulic pump 9, the hydraulic pump 9 is communicated with the clamping oil cylinder 4 through a first electromagnetic directional valve 11, and the hydraulic pump 9 is communicated with the propelling oil cylinder 8 through a second electromagnetic directional valve 12. With the structure, the first electromagnetic directional valve 11 controls the clamping oil cylinder 4 to extend and contract, and the second electromagnetic directional valve 12 controls the propulsion oil cylinder 8 to extend and contract.

In a preferable scheme, one-way valves are arranged between the first electromagnetic reversing valve 11 and the hydraulic pump 9 and between the second electromagnetic reversing valve 12 and the hydraulic pump 9. With this structure, the check valve controls the flow direction of the hydraulic pressure.

In a preferable scheme, a pressure reducing valve 13 is arranged between the first electromagnetic directional valve 11 and the hydraulic pump 9, an electronic control overflow valve 14 is arranged between the second electromagnetic directional valve 12 and the oil tank, a filter 10 is arranged between the hydraulic pump 9 and the oil tank, a thermometer is arranged on the oil tank, and an electric control handle is arranged and electrically connected with the hydraulic pump 9, the first electromagnetic directional valve 11 and the second electromagnetic directional valve 12. With the structure, the clamping cylinder 4 extends to keep the clamping state, the horizontal pushing cylinder 8 extends to reach the specified stroke to stop and retract the clamping cylinder 4 at the same time, and the horizontal pushing cylinder 8 retracts at the same time to start the next circulation process.

The pressure of the system is controlled by an electric control overflow valve 14 and a pressure reducing valve 13, and the pressure gauge displays pressure change during working.

Example 2

Further explained with reference to embodiment 1, as shown in fig. 1 to 7, the base 2 of the clamping mechanism is a workpiece, and has a structural parameter of a length of 425 mm, a width of 300 mm, and a height of 260 mm, and it needs to be installed on the rail 1, and simultaneously supports the clamping cylinder 4 and carries the bending and pulling of the pin shaft 3.

The grooves on the two sides are respectively provided with a pair of clamping arms 7, the clamping arms are connected with the base through pin shafts 3, clamping is carried out by taking the pin shafts 3 as fulcrums, the chucks of the clamping arms are specially processed to increase friction force, and the connecting rods 5 are 8 connecting components with the thickness of 10 mm, the length of 270 mm and the width of 70 mm and are connected with the connecting blocks 6 and the clamping arms 7 through the pin shafts 3.

The piston of the clamping oil cylinder 4 is connected below the connecting block 6, and the two sides of the connecting block are respectively connected with 4 connecting rods 5.

The base of the horizontal propulsion oil cylinder 8 is connected to the base 2 through a flange, the piston is also connected to the pushed object through a flange, and after the horizontal propulsion oil cylinder is installed, a pump station is connected with the oil cylinder, and test operation can be conducted.

The clamping mechanism is simple in overall composition and structure, but the size and the weight of each structure are large, the carrying is difficult, and the clamping mechanism needs to be installed and arranged according to actual conditions on site.

The clamping mechanism of the shield translation device and the working track 1 are clamped and fixed through a clamp, the shield machine is received by the receiving frame after going out of a hole, the clamping mechanism is installed on the track 1 at the moment, and translation work of the shield machine is achieved under the control action of the hydraulic pump station and the controller. Two ends of the horizontal propulsion oil cylinder 8 are connected with the clamping mechanism base 2 and the contact end of the receiving frame by flanges. The working principle of the shield translation device can be divided into a hydraulic mechanism working principle and a control system working principle.

According to the working principle of the shield translation device, the system can be subdivided into the working principles of hydraulic and electric directions according to a hydraulic and electric principle diagram, and the following is a specific step of the action principle of the hydraulic mechanism.

1. The clamping oil cylinder works: clamping an oil way:

the system is started, each regulating valve is adjusted to a set value, each electromagnetic valve is in an initial neutral position state, the hydraulic pump 9 is started to output hydraulic oil, the hydraulic oil is decompressed through the one-way valve and the pressure reducing valve 13, at the moment, the hydraulic oil is reversed through the first electromagnetic reversing valve 11 and passes through the hydraulic control one-way valve, the two synchronous clamping oil cylinders 4 extend out to clamp the track 1, and meanwhile, when the indication value of the pressure gauge reaches a set pressure value, the clamping oil path is closed, and the clamping state is kept.

2. The horizontal propulsion oil cylinder works: propelling oil circuit

The hydraulic pump 9 supplies oil, the second electromagnetic directional valve 12 is reversed, hydraulic oil passes through the left end of the second electromagnetic directional valve 12, the two synchronous horizontal propulsion oil cylinders 8 stretch out to propel the receiving frame connected with the piston, the ideal situation can be propelled to the full stroke, real-time management and control can be carried out through the controller according to the actual situation, and after the horizontal propulsion oil cylinders 8 finish propulsion work, the next action is waited.

3. Translational motion of clamping mechanism

The hydraulic pump 9 supplies oil, the first electromagnetic directional valve 11 changes direction, the hydraulic oil passes through the right end of the first electromagnetic directional valve 11, the two synchronous clamping oil cylinders 4 retract, the oil cylinders retract to the state that the chucks are opened, and then the state is maintained. Meanwhile, the second electromagnetic directional valve 12 is reversed, hydraulic oil passes through the right end of the second electromagnetic directional valve 12, so that the two synchronous horizontal pushing cylinders 8 retract to drive the clamping mechanism to move forwards, and the horizontal pushing cylinders 8 are connected with the clamping mechanism through flanges.

The power on/off of a reversing valve coil on the valve group can be controlled according to requirements through a control circuit to control the shield translation device to smoothly move, and the following steps are specific steps of the working principle of a control system.

Two of the electromagnetic directional valves adopt electromagnetic valves with handles to prevent the coil of the electromagnetic valve from failing to work when in fault, and the electromagnetic valves can be manually operated manually to realize the extending and retracting functions of the oil cylinder.

When the start button on the handle of the remote controller is pressed, the whole system supplies power, but the pump is not started, and when the start button is pressed, the pump is started. At the moment, the electromagnetic overflow valve is opened by an electric path, and the hydraulic pump is unloaded.

When the clamping button is pressed down, the clamping coil YV1 and the electromagnetic overflow valve power-off coil KA1 are powered on, the KA1 normally-closed contact is disconnected, the electromagnetic overflow valve 14 is closed, the clamping oil way is communicated with the clamping device to clamp the steel rail, the clamping button is loosened, YV1 is powered off, the first electromagnetic reversing valve 11 returns to the middle position, hydraulic oil in the clamping system pipeline leaks back to the oil tank, the clamping system is maintained in a clamping state, at the moment, the KA1 power-off normally-closed contact closes the electromagnetic overflow valve 14 to be opened, and the pump station is unloaded. When the 'jacking' button of the remote controller is pressed, a coil YV3 and a coil KA3 in an electric system are electrified, and a normally closed contact KA3 is disconnected, so that the electromagnetic overflow valve 14 is closed, the jacking oil cylinder extends out, and the receiving frame is pushed to advance. When the pump is pushed to a stroke, the normally closed contact of the pushing stop KA3 is closed by releasing a pushing button, and the pump is unloaded. When the 'release' button YV2 solenoid valve coil and KA2 coil are pressed down to be electrified, the clamping device opens and releases the steel rail. And releasing the 'loosening' button and pressing the 'shrinking' button to jack the oil cylinder for recycling, driving the supporting and clamping mechanism to move forwards, clamping the clamping mechanism after finishing recycling, repeating the next cycle, and thus repeatedly completing the air-pushing operation of the shield tunneling machine. When the pump needs to be stopped, the pump is stopped by pressing a button of 'pump start stop'. At the same time, the "stop" button is pressed to turn off the whole system.

Example 3

A shield translation construction method is further described by combining embodiment 1 and embodiment 2, and as shown in fig. 1 to 7, in shield construction, there are various working methods for the mounting and dismounting movement of large equipment, and herein, a shield translation construction method for a stage stepping translation shield machine complete machine is designed for the actual situation of a construction work area of a harbourn subway project, and the shield translation construction method takes a clamping mechanism as a core and needs to be provided with a working track, and the shield machine complete machine carried by a receiving frame and the receiving frame is translated on the working track.

Before the shield tunneling machine is translated, four rails need to be laid on a translation working face, as shown in the structure of fig. 7, the middle two rails are laid according to the track gauge of a rear matching trolley, the outer two rails are laid on the lower portion of a longitudinal beam of a receiving frame and used for translating the working rails, and a stop block is welded at the head of an originating frame to prevent the shield tunneling machine from shifting left and right in the translation process. Before the receiving frame is placed on the track, lubricant can be coated on the track to reduce the friction resistance of the shield tunneling machine during the translation process. And when the shield machine is lifted to the receiving frame, the shield machine starts to move horizontally. Two check blocks are welded on the outer sides of the two outermost working rails, and a chamfer is cut at the front end of the joint face of the rails, so that the check blocks are prevented from being rubbed and clamped at the joint of the rails in the translation process.

1. The hydraulic pump 9 is placed in a position where the shield tail is easy to operate.

2. And placing the supporting device on the rail surface of the steel rail, and keeping the distance between the supporting device and the receiving frame to be about 1300 mm.

3. The clamping device is mounted on the support device and inserted into the pin 3.

4. The clamping cylinder 4 is mounted on the support device and fixed.

5. A connecting rod connecting the oil cylinder and the clamping device.

6. The propulsion oil cylinder is arranged in a groove on the track surface and is connected with the supporting device.

7. And connecting the hydraulic pipeline.

8. And (4) extending and retracting the propulsion oil cylinder by using a hydraulic pump station, adjusting the appropriate length to be connected with the receiving frame, welding a flange of the receiving frame, and finishing the installation.

And 9, debugging, operating the pump station in a no-load mode, repeatedly and intermittently operating, observing the change of a pressure gauge and the sound of an oil pump and a system, and starting test operation after determining that the pump and an unloading loop are normal. The oil cylinder, the pump and the pipeline are filled with air, exhaust valves of all the execution elements are opened before work, and exhaust is carried out at low pressure, so that the oil is filled with oil. Checking whether the pipeline of the executive component is reversely connected or not so as to enable the pipeline to meet the action requirement. During test operation, the overflow valve is controlled to set a lower pressure to operate for 10-15 minutes, the wiring condition of an electric circuit is checked, the reversing of the electromagnetic valve is controlled through the control device, and the action of the oil cylinder is observed to determine that the controller is satisfied with the use. Then the load is increased intermittently, the running sound, pressure, temperature of the pump and the vibration, oil leakage and other conditions of all parts and pipelines are fully noticed, and if no abnormality exists, the full-load running can be carried out. After the pressure regulating valves are adjusted to set values, the normal working state can be entered. In the shield translation process, the change of each parameter of the system and the condition of a working site are observed constantly, if problems occur, the controller is controlled to adjust in real time, and if emergency situations occur, an emergency stop button needs to be pressed down in time to stop equipment emergently.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. The utility model provides a shield constructs translation device which characterized by: including centre gripping thrustor and hydraulic system, centre gripping thrustor structure is: a propelling oil cylinder (8) is arranged on one side of the base (2), clamping walls (7) are hinged to the two sides of the base (2), the upper end of each clamping wall (7) is hinged to one end of a connecting rod (5), the other end of each connecting rod (5) is hinged to the telescopic end of each clamping oil cylinder (4), and a hydraulic system is connected with the propelling oil cylinder (8) and the clamping oil cylinders (4);

the clamping oil cylinder (4) pushes the connecting rod (5) to enable the lower end of the clamping wall (7) to be clamped on two sides of the track (1), and the shield is pushed through the propelling oil cylinder (8).

2. The shield translation device of claim 1, wherein: a groove body is arranged below the base (2), and the groove body is arranged on the track (1).

3. The shield translation device of claim 1, wherein: the clamping walls (7) are multiple, the connecting rods (5) are multiple, and the end parts of the connecting rods (5) are hinged to the telescopic ends of the clamping oil cylinders (4) through connecting blocks (6).

4. The shield translation device of claim 1, wherein: the clamping wall (7) is hinged with the base (2) through a pin shaft.

5. The shield translation device of claim 1, wherein: the hydraulic system comprises a hydraulic pump (9), the hydraulic pump (9) is communicated with the clamping oil cylinder (4) through a first electromagnetic directional valve (11), and the hydraulic pump (9) is communicated with the propelling oil cylinder (8) through a second electromagnetic directional valve (12).

6. The shield translation device of claim 5, wherein: one-way valves are arranged between the first electromagnetic directional valve (11) and the second electromagnetic directional valve (12) and the hydraulic pump (9).

7. The shield translation device of claim 5, wherein: a pressure reducing valve (13) is arranged between the first electromagnetic directional valve (11) and the hydraulic pump (9).

8. The shield translation device of claim 5, wherein: an electric control overflow valve (14) is arranged between the second electromagnetic directional valve (12) and the oil tank.

9. The shield translation device of claim 5, wherein: a filter (10) is arranged between the hydraulic pump (9) and the oil tank, and a thermometer is arranged on the oil tank.

10. The shield translation device of claim 1, wherein: the hydraulic control system is provided with an electric control handle which is electrically connected with the hydraulic pump (9), the first electromagnetic directional valve (11) and the second electromagnetic directional valve (12).