CN209311110U - A kind of laboratory test simulation system of jacking construction - Google Patents
A kind of laboratory test simulation system of jacking construction Download PDFInfo
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- CN209311110U CN209311110U CN201920103759.0U CN201920103759U CN209311110U CN 209311110 U CN209311110 U CN 209311110U CN 201920103759 U CN201920103759 U CN 201920103759U CN 209311110 U CN209311110 U CN 209311110U
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- push pipe
- jacking
- guide rail
- tube coupling
- laboratory test
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Abstract
The utility model provides a kind of laboratory test simulation system of jacking construction, including model casing, guide rail limiting mechanism, push pipe mechanism, clay cutter structure, grouting system and system for monitoring displacement.The soil body is laid in model casing；Push pipe mechanism and clay cutter structure simulate practical push pipe process, simulation jacking construction is carried out in into model casing, grouting system simulates practical slip casting, system for monitoring displacement is located at the top of cabinet, during the experiment, guide rail limiting mechanism ensures the straight line push pipe of push pipe mechanism by linear guide and limit pulley, slurry caused by radial deflection is avoided to overflow, ensure can slip casting pressure it is stably and controllable, by the pressure sensor that push pipe mechanism and clay cutter structure is arranged in, the thrust of real-time measurement push pipe and cut soil resistance, pass through the disturbance to surrounding soil during system for monitoring displacement real-time measurement push pipe, entire Experimental mimic system working morphology is close to actual scene, it is more comprehensive to detect operating condition, have great importance to the development of jacking construction.
Description
Technical field
The utility model belongs to underground engineering experimental technique field, and in particular to a kind of laboratory test simulation of jacking construction
System.
Background technique
Push bench process is a kind of underground piping laying and construction method of no-dig technique, low with construction cost, applied widely
And lesser feature is influenced on ambient enviroment and ground settlement.Therefore construction by pipeline jacking method is widely used in urban pipe network and highway
Concerning Railway Tunnel Construction.Carrying out indoor model test using push pipe model test apparatus is pushed up power, rubs during research jacking construction
The important means that the governing factors such as resistance, move speed and grouting pressure influence working face surrounding formation.Through prior art text
Offer retrieval discovery, Chinese Patent Application No. 201210137982.X, utility model title: the indoor simulation examination of top pipe slurry injection drag reduction
Check system, the patented technology disclose a kind of simulating lab test system of construction engineering technical field top pipe slurry injection drag reduction, should
Device includes chamber, vertical load test system and grouting system.After the patented technology can be used for testing jacking construction slip casting
Frictional resistance can not simulate disturbance caused by the knife cutting soil body although simulating head with " tube coupling " for expanding size,
And because push pipe model needs piercing test case that could simulate jack-in process, therefore need to be synchronized in chamber both side plate aperture in simulation
During slip casting, slurry can be oozed out from the gap of tube coupling and hole causes grouting pressure to be unable to control.Chinese patent literature number
201289705Y, patent name: a kind of indoor model shield device of simcity metro shield tunneling, the patented technology
A kind of simulator of shield machine shield tunnel construction is disclosed, which includes digging mechanism, soil output and pusher
Structure.The dynamic that the device can simulate earth pressure balance shield machine is tunneled, the overall process of the constructions such as unearthed, propulsion, assembly, decylization,
But the research of synchronous grouting and frictional resistance during jacking construction can not be used for, and in jack-in process cutter head torque and
Jacking direction is uncontrollable under head Gravitative Loads, cannot control jacking misalignment of axe in laboratory conditions.These model equipments
Or system is typically only capable to a part of operating condition in simulation push pipe jacking construction, there is biggish limitation.
Accordingly, it is desirable to provide a kind of for a kind of insufficient laboratory test simulation system of jacking construction of the above-mentioned prior art
System.
Utility model content
The utility model is in view of the deficienciess of the prior art, provide a kind of mould that can be used for simulating jacking construction process
Type experimental provision can simulate push-bench head cutterhead and cut the jacking constructions processes such as soil, pipeline section jacking and synchronous grouting.To grind
Study carefully jacking construction and pushes up the governing factors such as power, frictional resistance, move speed and grouting pressure to the shadow of working face surrounding formation in the process
It rings.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of laboratory test simulation system of jacking construction, comprising:
Model casing, the model casing include cabinet and are laid on the intracorporal soil body of the case；The cabinet is top opening
Rigid box；The side wall of the model casing is provided with push pipe and passes through mouth；
Guide rail limiting mechanism, the guide rail limiting mechanism be located at the model casing be equipped with side wall of the push pipe by mouth
Side, including fixed frame, linear guide, push pipe limited support and guide rail slide block, the linear guide be located at the fixation
On frame, the guide rail slide block and the linear guide cooperate, and for linear motion along the linear guide, the push pipe limit
Position support is located on the fixed frame of described linear guide one end, and the push pipe limited support setting passes through in the push pipe
At mouthful；The fixed frame has support bearing effect；
Push pipe mechanism, the push pipe mechanism include head, tube coupling and jacking mechanism, the front end of the head and the tube coupling
Coaxially connected, the end of the tube coupling is connect with the guide rail slide block, and the jacking mechanism drives the guide rail slide block described in
Linear guide movement, the tube coupling are placed on the top of the push pipe limited support；
Clay cutter structure, the clay cutter structure include cutterhead, transmission shaft and cutter drive mechanism, and the cutterhead is located at the machine
The front end of head, the cutterhead are connect with the front end for the transmission shaft being located in the tube coupling, the cutter drive mechanism and institute
Transmission the tip of the axis connection is stated, the cutter drive mechanism drives the cutterhead rotation by the transmission shaft；
Grouting system, the grouting system include slip casting station, grouting pipeline and the grouting port through tube coupling outer wall, described
The slip casting station is connected to by grouting pipeline with the grouting port；
System for monitoring displacement, the system for monitoring displacement include displacement sensor and sensor stand, the sensor branch
Institute's displacement sensors are fixed on the top of the cabinet by frame.
A kind of laboratory test simulation system of jacking construction as described above, it is preferable that the jacking mechanism includes that jacking is watched
Motor, driving gear and rack gear are taken, the jacking servo motor is connect with the guide rail slide block, and the driving gear is assemblied in institute
The output shaft of jacking servo motor is stated, the rack gear is located at the side wall of the linear guide, the driving gear and the rack gear
Engagement.
A kind of laboratory test simulation system of jacking construction as described above, it is preferable that the cutter drive mechanism includes knife
Disk servo motor, the clay cutter structure further includes sleeve, and one end of the sleeve and the rotation axis of the cutterhead servo motor are rigid
Property is coaxially connected, and the other end of the sleeve is set in the transmission the tip of the axis, and the sleeve is matched with the propeller shaft slip
It closes, the barrel of the other end of the sleeve is equipped at least a pair of reversed opposite skewed slot, is driven on the outer surface of the tip of the axis
Corresponding skewed slot is equipped at least a pair of opposite guide pin.
A kind of laboratory test simulation system of jacking construction as described above, it is preferable that the slip casting station includes slurry tank, pressure
Power table and air pipe interface positioned at slurry pot sidewall, the slurry tank are closed structure, and the air pipe interface and high-pressure air pipe connect
It connects.
A kind of laboratory test simulation system of jacking construction as described above, it is preferable that the grouting system further includes electronics
Balance, the slurry tank are placed on the weighing portion of the electronic balance, and the grouting pipeline and the high-pressure air pipe are hose.
A kind of laboratory test simulation system of jacking construction as described above, it is preferable that the push pipe limited support is limit
Pulley, the outer diameter and the tube coupling outer diameter contact of the limit pulley, to support the tube coupling.
A kind of laboratory test simulation system of jacking construction as described above, it is preferable that the push pipe at mouth by being provided with
Sealing ring.
A kind of laboratory test simulation system of jacking construction as described above, it is preferable that the cutter drive mechanism with it is described
The junction of guide rail slide block connection, the cutter drive mechanism and the guide rail slide block is provided with first pressure sensor.
A kind of laboratory test simulation system of jacking construction as described above, it is preferable that the jacking servo motor with it is described
The junction of guide rail slide block is provided with second pressure sensor.
A kind of laboratory test simulation system of jacking construction as described above, it is preferable that the transmission shaft passes through sliding bearing
It is arranged inside the tube coupling and head, the sliding bearing is separately mounted to the bearing block being located in tube coupling and is located in head
Bearing block in；The bearing block is spoke type hollow out bearing block.
Compared with the immediate prior art, technical solution provided by the utility model has following excellent effect:
The laboratory test simulation system of jacking construction provided by the utility model, the straight line by the way that tube coupling both ends are arranged in are led
Rail and limit pulley, limit the misalignment of axe in push pipe jack-in process, solve under laboratory condition in jack-in process due to
The uncontrollable problem of misalignment of axe caused by cutter head torque acts on.Pass through the sealing being arranged at mouth by the push pipe in model casing
Circle makes tube coupling and push pipe by mouth airtight connection, solves the problems, such as that grouting pressure caused by leaking because of slurry is uncontrollable, realizes
Pressure stabilizing slip casting drag reduction.By the system for monitoring displacement being arranged above model casing, push pipe is perceived in time in the process to native around
The disturbance situation of body.Entire Experimental mimic system working morphology is close to actual scene, and detection operating condition is more comprehensive, to jacking construction
Development have great importance.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
Wherein:
Fig. 1 is the laboratory test simulation system schematic diagram of the jacking construction of the utility model embodiment；
Fig. 2 is the laboratory test simulation system right view of the jacking construction of the utility model embodiment；
Fig. 3 is the laboratory test simulation system partial enlargement diagram of the jacking construction of the utility model embodiment；
Fig. 4 is the grouting system schematic diagram of the utility model embodiment；
Fig. 5 is the tube-in-tube structure schematic diagram of the utility model embodiment.
In figure: 1, model casing；11, tempered glass side plate；12, push pipe passes through mouth；13, T-type sliding slot；14, length scales；
15, altitude scale；16, cover board；17, movable pulley；21, fixed frame；22, linear guide；23, guide rail slide block；24, adjustable supporting
Foot；25, pulley is limited；31, head；32, tube coupling；33, jacking servo motor；34, driving gear；35, rack gear；36, discharge port；
37, second pressure sensor；41, cutterhead；42, transmission shaft；421, guide pin；43, cutterhead servo motor；44, sleeve；441,
Skewed slot；45, sliding bearing；46, first pressure sensor；51, grouting pipeline；52, grouting port；53, slurry tank；54, pressure
Table；55, electronic balance；61, photoelectric displacement sensor；62, sensor stand.
Specific embodiment
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that not conflicting
In the case where, the features in the embodiments and the embodiments of the present application can be combined with each other.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of description the utility model rather than requires the utility model that must be constructed and operated in a specific orientation, therefore
It should not be understood as limiting the present invention.Term used in the utility model " connected ", " connection " shall be understood in a broad sense,
For example, it may be being fixedly connected, may be a detachable connection；It can be directly connected, it can also be indirect by intermediate member
It is connected, for the ordinary skill in the art, can understands the concrete meaning of above-mentioned term as the case may be.
Embodiment according to the present utility model, as shown in Figures 1 to 5, the utility model provide a kind of room of jacking construction
Interior Experimental mimic system, comprising: model casing 1, guide rail limiting mechanism, push pipe mechanism, clay cutter structure, grouting system and displacement monitoring
System, clay cutter structure and push pipe mechanism are both placed on the guide rail slide block 23 of guide rail limiting mechanism, lead cutterhead 41 along straight line
The direction of rail 22 enters in the soil body in model casing 1, and the head 31 and tube coupling 32 at 41 rear of cutterhead are headed into cutterhead 41 in time and revolved
In the hole dug out, grouting system carries out slip casting drag reduction to 32 outer wall of tube coupling by the grouting port 52 on tube coupling 32, it is ensured that smoothly
Push pipe.System for monitoring displacement is located at the top of cabinet, by the vertical displacement of the soil body in multiple displacement sensor detection boxes, from
And it detects and cuts influence of the native jacking construction to surrounding soil.
Model casing 1 includes cabinet and is laid on the intracorporal analog material soil body of case；Cabinet is open-topped rigid box；
The opposition side wall of model casing 1 is provided with corresponding push pipe and passes through mouth 12；For the ease of the feelings of soil body material in observing and nursing case 1
Condition, cabinet is using rigid frame (such as welding parameters calculated), transparent rigid side plate (such as tempered glass side plate 11) and rigidity
Bottom plate (such as welding steel substrate) is made.System is monitored for the ease of fixed displacement, frame at the top of the box body is provided with
Sliding slot (such as T-type sliding slot 13).For the ease of observing position of each component relative to the soil body in cabinet, at the top of model casing 1
Frame and vertical frame are respectively arranged with length scales 14 and altitude scale 15.In the embodiments of the present invention, using sand
As soil body material, sanding height is that the height away from 1 bottom plate of model casing is 700mm, and 11 middle position of tempered glass side plate is set
Push pipe is equipped with by mouth 12, and cover board 16 is set.Cover board 16 is closed when being laid with the analog material soil body, when operation to be tested starts
Cover board 16 is opened again, and push pipe is consistent with the diameter of head 31 by the diameter of mouth 12, and push pipe passes through the distance of center circle model casing 1 of mouth 12
The height of bottom plate is 300mm.1 bottom frame of model casing is provided with movable pulley 17, convenient for the movement of model casing 1.Movable pulley 17 is set
It is equipped with arrestment mechanism, after model casing 1 places, arrestment mechanism is braked, displacement when preventing model casing 1 from working.
Guide rail limiting mechanism is located at side of the model casing 1 equipped with push pipe by the side wall of mouth 12, including fixed frame 21, straight
Line guide rail 22, push pipe limited support and guide rail slide block 23.Fixed frame 21 and model casing 1 are rigidly connected, and linear guide 22 is located at
The top of fixed frame 21, guide rail slide block 23 and linear guide 22 cooperate, and for linear motion along linear guide 22.Push pipe
Limited support is located on the fixed frame 21 of 22 one end of linear guide, and push pipe limited support passes through mouth 12 close to push pipe.Fixed frame
Frame 21 has support bearing effect, and the bottom of fixed frame 21 is provided with adjustable support leg 24.
Preferably, using limit pulley 25, the outer diameter for limiting the outer diameter and tube coupling 32 of pulley 25 connects push pipe limited support
Touching, to support tube coupling 32, prevents the front end of tube coupling 32 from generating radial displacement because of the reasons such as gravity.Further, it is
Keep support effect more stable, limits pulley 25 at least provided with 2, multiple limit pulleys 25 and tube coupling 32 two sides of the bottom
Appearance face contact.By the way that linear guide 22 is arranged, the use of cooperation limit pulley 25 makes guide rail limiting mechanism limit push pipe
Misalignment of axe in jack-in process solves axis caused by acting in jack-in process due to 41 torque of cutterhead under laboratory condition
The uncontrollable problem of deviation.
Push pipe mechanism includes head 31, tube coupling 32 and jacking mechanism.Head 31 is connect with the front end coaxial rigid of tube coupling 32,
The end of tube coupling 32 is connect with guide rail slide block 23, and jacking mechanism drives guide rail slide block 23 to move along linear guide 22, and tube coupling 32 is put
It sets in the top of limit pulley 25.In order to avoid resistance is excessive during push pipe, the axis projection region overlay of head 31 is managed
The axis projection region of section 32.In the embodiments of the present invention, the outer diameter of head 31 is 103mm, and the outer diameter of tube coupling 32 is
100mm.In this way during push pipe, only 31 position of head is larger compared with the frictional force of the soil body, 32 outer wall of tube coupling by
The frictional force arrived is smaller, is conducive to push pipe.The end lower part of tube coupling 32 is provided with discharge port 36, facilitates the discharge of earth material.It leans on
32 outer wall of tube coupling of nearly 31 one end of head is evenly equipped with grouting port 52, and in the present embodiment, grouting port 52 is along 32 length direction of tube coupling
Spacing be 50mm, be evenly distributed with 4 grouting ports 52 along tube coupling 32 is circumferential.The jacking length of tube coupling 32 is 550mm.Jacking mechanism includes
Jacking servo motor 33, driving gear 34 and rack gear 35, jacking servo motor 33 are connect with guide rail slide block 23, driving gear 34
It is assemblied in the output shaft of jacking servo motor 33, rack gear 35 is located at the side wall of linear guide 22, and driving gear 34 is nibbled with rack gear 35
It closes.In the embodiments of the present invention, the junction of jacking servo motor 33 and guide rail slide block 23 is provided with second pressure biography
Sensor 37, second pressure sensor 37 can detecte the motive force that guide rail slide block 23 during push pipe is subject to.
In use, servo motor operates, driving gear 34 is driven to rotate along rack gear 35, to realize jacking mechanism
The tube coupling 32 on guide rail slide block 23 is driven to move along a straight line along the direction of linear guide 22.
Clay cutter structure includes cutterhead 41,41 driving mechanism of transmission shaft 42 and cutterhead, and cutterhead 41 is located at the front end of head 31, knife
Disk 41 is connect with the front end for the transmission shaft 42 being located in tube coupling 32, and 41 driving mechanism of cutterhead is connect with the end of transmission shaft 42, knife
41 driving mechanism of disk is rotated by transmission shaft 42 with movable knife disc 41, cuts native movement to realize.Further, cutterhead 41 drives
Mechanism includes cutterhead servo motor 43, and clay cutter structure further includes sleeve 44, one end of sleeve 44 and turning for cutterhead servo motor 43
The connection of moving axis rigid coaxial, the other end of sleeve 44 are set in the end of transmission shaft 42, and sleeve 44 is matched with the sliding of transmission shaft 42
It closes, the barrel of the other end of sleeve 44 is equipped at least a pair of reversed opposite skewed slot 441, the outer surface of the end of transmission shaft 42
Upper corresponding skewed slot 441 is equipped at least a pair of opposite guide pin 421；Skewed slot 441 is to receive close to one end of cutterhead servo motor 43
The other end at contracting end, skewed slot 441 is elongation end, and projection of the skewed slot 441 on 44 radial section of sleeve is by elongation end to serrated end
Direction of rotation and cutterhead 41 to cut native direction of rotation consistent.Reversed opposite skewed slot 441, one of skewed slot 441 is around sleeve
It is overlapped when 44 axis rotates 180 degree with opposite skewed slot 441.Guide pin 421 is mounted in skewed slot 441, in the present embodiment
In, in order to reduce resistance to sliding, the appearance of guide pin 421 is provided with bearing arrangement (such as rolling bearing or axle sleeve), is convenient for
Sliding of the guide pin 421 in skewed slot 441.
Transmission shaft 42 is fixed at the axis of tube coupling 32 and head 31 by sliding bearing 45, and sliding bearing 45 is mounted on pipe
In bearing block in section 32 and head 31；Bearing block is that the hollow out bearing block of spoke type does not influence knife while spring bearing
The earth material that disk 41 is cut is transported by tube coupling 32 to discharge port 36.Preferably, sliding bearing 45 is provided with two groups, is located at pipe
Near two ends inside section 32.41 driving mechanism of cutterhead is connect with guide rail slide block 23, and 41 driving mechanism of cutterhead and guide rail are sliding
The junction of block 23 is provided with first pressure sensor 46.Convenient for measuring the resistance that cutterhead 41 is subject at work.
In use, cutterhead servo motor 43, with movable knife disc 41 rotary cutting soil, guide pin 421 slides into stretching for skewed slot 441
Long end drives transmission shaft 42 to stretch out, makes to stay appropriate gap between cutterhead 41 and head 31, cutterhead 41 rotary cutting soil, 31 He of head
Tube coupling 32 carries out straight line jacking under the driving of jacking servo motor 33, along linear guide 22.The earth material that cutterhead 41 is cut into
Enter inside head 31 by the transport of tube coupling 32 to discharge port 36.When cutting soil completion closing simulation system, cutterhead servo motor 43
Reversion makes guide pin 421 slide into the serrated end of skewed slot 441, and transmission shaft 42 is driven to shrink, and the lid of cutterhead 41 is made to be located at head 31
Opening avoids soil under stationary state and enters from 31 opening of head, is subjected to displacement the soil body to cause measurement inaccuracy.
When cutterhead 41 and head 31 cooperate close, guide pin 421 just slides into the serrated end extreme position of skewed slot 441, avoids passing
The excessive shrinkage of moving axis 42 causes between cutterhead 41 and head 31 contact excessive and keeps cutterhead 41 impaired.
Grouting system includes slip casting station, grouting pipeline 51 and the grouting port 52 through 32 outer wall of tube coupling, multiple Grouting Pipes
Slip casting station and each grouting port 52 in tube coupling 32 are respectively communicated with by road 51；In use, slurry is passed through Grouting Pipe by slip casting station
Road 51 is transported to grouting port 52, injects the gap between 32 outer wall of tube coupling and the soil body, to realize the technical effect of drag reduction, is conducive to real
Now smooth jacking construction.
Preferably, slip casting station includes slurry tank 53, pressure gauge 54 and the air pipe interface positioned at 53 side wall of slurry tank, slurry tank
53 be closed structure, and air pipe interface is connect with high-pressure air pipe.In slip casting, by being passed through high pressure gas toward closed slurry tank 53
Body increases the pressure in slurry tank 53, transports away the slurry in slurry tank 53 by grouting pipeline 51, for the ease of observation
Pressure in slurry tank 53 is provided with pressure gauge 54 in the top of slurry tank 53, can by observing the pressure change of pressure gauge 54
To adjust admission pressure in time, to realize constant pressure slip casting, keep grouting pressure controllable.The present embodiment is on the top of 1 side wall of model casing
Pipe is by being provided with sealing ring at mouth 12, since guide rail position restrainer provided by the utility model limits in push pipe jack-in process
Misalignment of axe, it is ensured that the whole jacking of tube coupling 32 is controllable, and after tube coupling 32 enters model casing 1, sealing ring can guarantee tube coupling
32 pass through sealed connection at mouth 12 with push pipe, avoid slurry when slip casting from leaking, to influence the stabilization of grouting pressure.
Further, grouting system further includes electronic balance 55, and slurry tank 53 is placed on the weighing portion of electronic balance 55,
Grouting pipeline 51 and high-pressure air pipe are hose.During slip casting, 53 entoplasm of slurry tank is observed by electronic balance 55 in real time
The reduction situation of material can also react the speed of slip casting from side, can also assess 53 entoplasm surplus of slurry tank in time, add in time
Slurry avoids influence to test from being normally carried out.
System for monitoring displacement includes displacement sensor and sensor stand 62, and sensor stand 62 fixes displacement sensor
In the top of cabinet.Preferably, displacement sensor uses photoelectric displacement sensor 61, in use, sensor stand 62 passes through
Bolt is fixed in the T-type sliding slot 13 of the top of model casing 1, for detect test during in model casing 1 soil body vertical displacement,
Sensor stand 62 is vertical with the axis of movement of tube coupling 32.The surface of push pipe axis of movement sets up a photoelectric displacement sensor
61, and as central point, it is symmetrically set up along sensor stand 62 every 100mm, sets up 13 optical displacement sensors altogether.
The laboratory test simulation system of the jacking construction of the utility model when in use, is first turned on 1 side of model casing
Cover board 16 opens jacking servo motor 33 and cutterhead servo motor 43, and clay cutter structure and push pipe mechanism successively enter model casing 1
The soil body in carry out push pipe operation, after 32 grouting port of tube coupling, 52 region enters model casing 1, open grouting system in grouting pipeline
51 switch makes in the gap between slurry injection tube coupling 32 and the soil body, to realize the effect of drag reduction.While slip casting
The air intake valve for opening high-pressure air pipe persistently inputs high pressure gas into slurry tank 53, guarantees that the pressure in slurry tank 53 is stablized,
To realize pressure stabilizing slip casting.During jacking, felt respectively by first pressure sensor 46 and second pressure sensor 37
Know the frictional resistance being subject to during the resistance and entire push pipe that cutterhead 41 is subject to.During entire push pipe, by being arranged in mould
To the disturbance situation of surrounding soil during the Optical displacement sensor perception push pipe of 1 top of molding box.
In conclusion the laboratory test simulation system of jacking construction provided by the utility model, by being arranged in tube coupling two
The linear guide and limit pulley at end, limit the misalignment of axe in push pipe jack-in process, solve jacking under laboratory condition
The uncontrollable problem of misalignment of axe caused by being acted in the process due to cutter head torque.By the push pipe in model casing by being set at mouth
The sealing ring set makes tube coupling and push pipe by mouth airtight connection, and grouting pressure is uncontrollable caused by solving because of slurry leakage
Problem realizes pressure stabilizing slip casting drag reduction.By the system for monitoring displacement being arranged above model casing, in time during perception push pipe
To the disturbance situation of surrounding soil.For entire Experimental mimic system working morphology close to actual scene, detection operating condition is more comprehensive, right
The development of jacking construction has great importance.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of laboratory test simulation system of jacking construction, which is characterized in that the Experimental mimic system includes:
Model casing, the model casing include cabinet and are laid on the intracorporal soil body of the case；The cabinet is open-topped rigid
Property cabinet；The side wall of the model casing is provided with push pipe and passes through mouth；
Guide rail limiting mechanism, the guide rail limiting mechanism are located at one for being equipped with the push pipe and passing through the side wall of mouth of the model casing
Side, including fixed frame, linear guide, push pipe limited support and guide rail slide block, the linear guide are located at the fixed frame
On, the guide rail slide block and the linear guide cooperate, and for linear motion along the linear guide, the push pipe limit branch
Support is located on the fixed frame of described linear guide one end, and the push pipe limited support, which is arranged, passes through mouth in the push pipe
Place；The fixed frame has support bearing effect；
Push pipe mechanism, the push pipe mechanism include head, tube coupling and jacking mechanism, and the front end of the head and the tube coupling is coaxial
Connection, the end of the tube coupling are connect with the guide rail slide block, and the jacking mechanism drives the guide rail slide block along the straight line
Guide rail movement, the tube coupling are placed on the top of the push pipe limited support；
Clay cutter structure, the clay cutter structure include cutterhead, transmission shaft and cutter drive mechanism, and the cutterhead is located at the head
Front end, the cutterhead are connect with the front end for the transmission shaft being located in the tube coupling, the cutter drive mechanism and the biography
Dynamic the tip of the axis connection, the cutter drive mechanism drive the cutterhead rotation by the transmission shaft；
Grouting system, the grouting system include slip casting station, grouting pipeline and the grouting port through tube coupling outer wall, the slip casting
The slip casting station is connected to by pipeline with the grouting port；
System for monitoring displacement, the system for monitoring displacement include displacement sensor and sensor stand, and the sensor stand will
Institute's displacement sensors are fixed on the top of the cabinet.
2. a kind of laboratory test simulation system of jacking construction as described in claim 1, which is characterized in that the jacking mechanism
Including jacking servo motor, driving gear and rack gear, the jacking servo motor is connect with the guide rail slide block, the driving tooth
Wheel is assemblied in the output shaft of the jacking servo motor, and the rack gear is located at the side wall of the linear guide, the driving gear
It is engaged with the rack gear.
3. a kind of laboratory test simulation system of jacking construction as described in claim 1, which is characterized in that the cutter plate driver
Mechanism includes cutterhead servo motor, and the clay cutter structure further includes sleeve, one end of the sleeve and the cutterhead servo motor
The connection of rotation axis rigid coaxial, the other end of the sleeve is set in the transmission the tip of the axis, the sleeve and the biography
Moving axis is slidably matched, and the barrel of the other end of the sleeve is equipped at least a pair of reversed opposite skewed slot, is driven the tip of the axis
Outer surface on correspond to skewed slot equipped at least a pair of opposite guide pin.
4. a kind of laboratory test simulation system of jacking construction as described in claim 1, which is characterized in that the slip casting station packet
Include slurry tank, pressure gauge and the air pipe interface positioned at slurry pot sidewall, the slurry tank is closed structure, the air pipe interface with
High-pressure air pipe connection.
5. a kind of laboratory test simulation system of jacking construction as claimed in claim 4, which is characterized in that the grouting system
It further include electronic balance, the slurry tank is placed on the weighing portion of the electronic balance, the grouting pipeline and the high pressure gas
Pipe is hose.
6. a kind of laboratory test simulation system of jacking construction as described in claim 1, which is characterized in that the push pipe limit
Support is limit pulley, the outer diameter and the tube coupling outer diameter contact of the limit pulley, to support the tube coupling.
7. a kind of laboratory test simulation system of jacking construction as described in claim 1, which is characterized in that the push pipe passes through
Sealing ring is provided at mouthful.
8. a kind of laboratory test simulation system of jacking construction as claimed in claim 1 or 3, which is characterized in that the cutterhead
Driving mechanism is connect with the guide rail slide block, and the junction of the cutter drive mechanism and the guide rail slide block is provided with the first pressure
Force snesor.
9. a kind of laboratory test simulation system of jacking construction as described in claim 1, which is characterized in that the jacking servo
The junction of motor and the guide rail slide block is provided with second pressure sensor.
10. a kind of laboratory test simulation system of jacking construction as described in claim 1, which is characterized in that the transmission shaft
It is arranged inside the tube coupling and head by sliding bearing, the sliding bearing is separately mounted to the bearing block being located in tube coupling
Be located at head in bearing block in；The bearing block is spoke type hollow out bearing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920103759.0U CN209311110U (en) | 2019-01-22 | 2019-01-22 | A kind of laboratory test simulation system of jacking construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920103759.0U CN209311110U (en) | 2019-01-22 | 2019-01-22 | A kind of laboratory test simulation system of jacking construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209311110U true CN209311110U (en) | 2019-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920103759.0U Withdrawn - After Issue CN209311110U (en) | 2019-01-22 | 2019-01-22 | A kind of laboratory test simulation system of jacking construction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738221A (en) * | 2019-01-22 | 2019-05-10 | 安徽建筑大学 | A kind of laboratory test simulation system of jacking construction |
| CN111157269A (en) * | 2020-01-13 | 2020-05-15 | 武汉科技大学 | Pipe jacking model test device |
| CN113109018A (en) * | 2021-04-27 | 2021-07-13 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Model replacement method suitable for small continuous type cross supersonic wind tunnel |
-
2019
- 2019-01-22 CN CN201920103759.0U patent/CN209311110U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738221A (en) * | 2019-01-22 | 2019-05-10 | 安徽建筑大学 | A kind of laboratory test simulation system of jacking construction |
| CN109738221B (en) * | 2019-01-22 | 2021-06-22 | 安徽建筑大学 | Indoor test simulation system for pipe jacking construction |
| CN111157269A (en) * | 2020-01-13 | 2020-05-15 | 武汉科技大学 | Pipe jacking model test device |
| CN113109018A (en) * | 2021-04-27 | 2021-07-13 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Model replacement method suitable for small continuous type cross supersonic wind tunnel |
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