CN206268173U - A kind of wedge structure hydraulic pressure support displacement control system - Google Patents

Abstract

The utility model provides a kind of wedge structure hydraulic pressure support displacement control system, including inner pressurization hydraulic cylinder, transitional cylinder, support tube, locking wedge block and force column etc., force column is fixedly connected with inner pressurization hydraulic cylinder, two inclined-planes of locking wedge block are contacted with support tube and stress cylinder respectively, realize the transmission to support force, and two inclined-planes and the angle of vertical plane, the unblock and locking that hydraulic system is realized with spring reset are opened by hydraulic top；Simultaneously, the utility model also provides the application method of wedge structure hydraulic pressure support displacement control system, by PLC control unit, coordinate inner pressurization hydraulic cylinder and No. three action relationships of piston rod, complete the unblock and locking of hydraulic work system state, wedge structure hydraulic pressure support displacement control system and its application method that the utility model is provided, can avoid resource consumption and hidden danger that manual operation is brought, further ensure that security of foundation ditch construction is carried out in an orderly manner.

Description

A kind of wedge structure hydraulic pressure support displacement control system

Technical field

The utility model belongs to foundation pit construction field, the hydraulic cylinder of the hydraulic mechanical lock of more particularly to a kind of use band and its Application method.

Background technology

With the fast development of urbanization process, the construction in city also becomes more diversified and complicates, the ring of construction Border also becomes increasingly complex, it is desirable to standard also more and more higher.Nowadays, when ground construction is carried out, particularly opened in deep basal pit During digging, in order to protect the safety of foundation ditch itself and periphery buildings or structures structure, generally require using some supporting knots Structure carries out supporting, such as reinforced concrete support, steel pipe support etc. to deep basal pit.Because steel pipe support has speed fast, cost is low Advantage, it is increasingly used for deep foundation pit support, especially in some occasions extremely strict to deformation control of foundation pit requirement, The Deformation control of the Soft Soil Foundation Pit engineering on subway side is such as run, typically also needs to apply prestressing force according to design requirement, but With the passage of engineering time, bracing members can produce stress relaxation, and the prestressing force on bracing members can be reduced, and even disappear sometimes. Generally need to set a steel support shaft force control device, typically a jack, such as hydraulic pressure between steel pipe support and enclosure wall Formula jack is oil cylinder, and prestressing force is applied by the jack pair bracing members, with prevent enclosure wall in Excavation Process by Foundation pit deformation is caused to runaway in the loss of bracing members axle power.

It is adaptive that Chinese patent literature CN101776106B disclosed a kind of axial force of foundation pit steel support on October 17th, 2012 System real-time compensating cylinder system is answered, when oil cylinder carries out " stretching " to work, First piston bar is advanced and drives screw rod to advance, this When, because locking nut is connected with screw flight, the locking nut follows screw rod to advance so that can locking nut be connected Transition sleeve is to produce corresponding gap between dust cover, in order to prevent eliminating the gap between locking nut and dust cover, scene Operating personnel must descend Brace in Deep Footing Groove compensating cylinder position, manual turn locking nut makes it with dust cover by jail, from And realize locked cylinder operating position.Once oil cylinder breaks down or oil supply loop occurs oil leakage phenomenon, the pressure of oil in oil cylinder Power can be reduced suddenly, screw rod will fast fallback, because locking nut is leaned against on dust cover, screw rod can be prevented from retracting so that Avoid support failure of the steel pipe support to building enclosure, it is ensured that the construction safety of deep basal pit.

Because in work progress, foundation ditch all can occur some micro-strains all the time, when deflection accumulation to During definite value, now, the pressure of oil, in order to avoid foundation pit deformation is excessive, is just needed also with a certain limit value is dropped in hydraulic cylinder The overhang of hydraulic cylinder piston rod is adjusted in time, so continually needing artificially to remove turn locking nut.Generally, a deep base Hole needs tens even hundreds of such steel pipe supports, and so big workload can intangibly increased the work of operating personnel Intensity, and due to artificial, certain root steel pipe support or certain locking nut turn work are inevitably omitted, So as to some unsafe factors can be left to foundation pit construction；In addition, deep foundation pit construction environment is more severe, it is easy to operate Personnel such as trip, fall at the security incident.

Therefore it provides a kind of can determine the hydraulic cylinder of working condition by synchronous automatic locking in time, artificial rotation lock can be avoided Manpower, a large amount of wastes of financial resources caused by tight nut and some unsafe factors for being brought, a kind of wedge shape knot of utility model Structure hydraulic pressure support displacement control system and its application method are those skilled in the art's technical problems urgently to be resolved hurrily.

Utility model content

In order to solve deep basal pit in Geotechnical Engineering (especially complex geologic conditions and environmentally sensitive area such as city operations Deep basal pit along iron) excavation construction when deformation problem whard to control, one kind for foundation ditch support that the utility model is provided Wedge structure hydraulic pressure support displacement control system and its application method, can determine the work shape of hydraulic cylinder by synchronous automatic locking in time State, realizes to the real-time mechanical self-latching function of hydraulic cylinder, so as to avoid manpower caused by artificial operation, financial resources a large amount of wastes with And some unsafe factors for being brought, the use human cost that foundation ditch Light deformation controls hydraulic cylinder is not only reduced, while The security of work progress is effectively ensured.In order to solve the above-mentioned technical problem, the utility model is adopted the following technical scheme that：

A kind of wedge structure hydraulic pressure support displacement control system, including it is inner pressurization hydraulic cylinder, transitional cylinder, support tube, some Locking wedge block and force column, the inner pressurization hydraulic cylinder, the transitional cylinder and the support tube set gradually from below to up, institute State inner pressurization hydraulic cylinder and the support tube to be fixedly connected with the transitional cylinder by bolt respectively, the force column is arranged at institute State in support tube, the force column is fixed by bolts on the inner pressurization hydraulic cylinder top surface, and the locking wedge block is arranged at institute State between force column and the support tube, the medial slope and outside inclined-plane of the locking wedge block respectively with the cunning of the force column The supporting oblique surface for moving inclined-plane and the support tube is contacted, and the angle of the medial slope and perpendicular is less than and the outer skew back Face and the angle of perpendicular, the locking wedge block are evenly distributed on the surrounding of the force column.

Optionally, also there is a countersunk head screwed hole at the center of the ball ring including ball ring, the ball ring includes The approximate hemisphere for linking together and a disk, the hemisphere are embedded in the hemisphere of the top surface of the force column In groove, the ball ring is column articulated with the stress.

Preferably, including two locking wedge blocks, two locking wedge blocks are symmetricly set in the week of the force column Enclose.

Preferably, including four locking wedge blocks, four locking wedge blocks are arranged at around the force column, are appointed The mutually arrangement in 90 ° of the one two neighboring locking wedge block.

Optionally, the inner pressurization hydraulic cylinder includes cylinder barrel, guide pin bushing, piston, piston rod, No. two pistons Bar and No. two guide pin bushings, a guide pin bushing are arranged in the cylinder barrel, and a guide pin bushing is threadedly coupled with the cylinder barrel, described A number piston rod is arranged in the cylinder barrel through a guide pin bushing, and the force column passes through bolt and a piston rod It is fixedly connected, the axial cavity with one end open, No. two guide pin bushings and No. two piston rods in a piston rod May be contained within the axial cavity, No. two piston rods pass through No. two guide pin bushings, a piston to be arranged at described No. two upper ends of piston rod a, piston is connected through a screw thread with No. two piston rods.

Optionally, also including No. three guide pin bushings, No. two pistons and No. three piston rods, No. three guide pin bushings are a flanged pins Cylindrical shroud, No. three guide pin bushings are arranged between the transitional cylinder and the support tube, the upper and lower end face point of the flange The not lower surface with the support tube and the upper end plane-plane contact of the transitional cylinder, the transitional cylinder, No. three guide pin bushings and institute State support tube to be fixedly connected by some vertical bolts, the bolt is distributed uniformly and circumferentially, No. three piston rods are worn Cross No. three guide pin bushings to be arranged in the transitional cylinder, No. two pistons are arranged at the upper end of No. three piston rods, described To be threadedly coupled between No. two pistons and No. three piston rods, an a hydraulic fluid port for insertion is set on the transitional cylinder, in institute State one b hydraulic fluid port of insertion of setting on support tube.

Optionally, also including some compression springs, gland and No. four guide pin bushings, No. four guide pin bushings are one flanged Cylindrical shroud, No. four guide pin bushings are arranged in the support tube through the gland, and No. four guide pin bushings are enclosed within the stress The top of post, the compression spring is uniformly arranged on the surrounding of No. four guide pin bushings, the compression spring and the locking wedge block Correspond, the two ends of the compression spring withstand on the flange of the gland and No. four guide pin bushings respectively.

Optionally, also including PLC control unit, two two-position four-way solenoid valves, a three position four-way electromagnetic valves and Individual overflow valve, wherein, two-position four-way solenoid valve is arranged at connection working connection and a hydraulic fluid ports and the b hydraulic fluid ports On oil circuit, another described two-position four-way solenoid valve be arranged at the inner pressurization hydraulic cylinder enter, on oil return line, the 3-position 4-way Magnetic valve is arranged on total oil-feed oil circuit and total oil return circuit, and the overflow valve is arranged on total oil-feed oil circuit, the PLC Control unit connects with two two-position four-way solenoid valves, the three position four-way electromagnetic valve and the overflow valve signal respectively Connect.

In addition, the utility model also provides a kind of application method of wedge structure hydraulic pressure support displacement control system, it is special Levy and be, comprise the following steps：

Step 1：A kind of wedge structure hydraulic pressure support displacement control system as any one of claim 1-8 is provided；

Step 2：The wedge structure hydraulic pressure support displacement control system is arranged at steel pipe support with required Light deformation control Between the foundation pit enclosure wall of system, the force column is withstood on the pre-embedded steel slab of the foundation pit enclosure wall；

Step 3：Some steel plate cushion blocks are set between the inner pressurization hydraulic cylinder and the steel pipe support, to the steel pipe Support applies the axle power of design requirement, it is ensured that the overhang of a piston rod is less than impulse stroke, sets under axle power early warning Limit value；

Step 4：Monitoring axle power change：

When axle power reaches the axle power early warning lower limit, the inner pressurization hydraulic cylinder performs pressurization instruction, to A oil Mouth oiling, the inner pressurization hydraulic cylinder pressurization；

When axle power is restored to design requirement axle power value, judge whether to perform a piston rod retracting action；

When a piston rod retracting action is not performed, repeat step 4；

When a piston rod retracting action is performed, step 5 is gone to；

Step 5：Perform and instructed to the b hydraulic fluid ports oiling, No. three piston rods stretch out, and head on the locking wedge block upward Upper extreme position is moved to, is stopped to the b hydraulic fluid ports oiling, the inner pressurization hydraulic cylinder performs pressure release instruction, to the B hydraulic fluid ports Oiling, the inner pressurization hydraulic cylinder pressure release, the piston rod retraction；

When a piston rod retracts to initial position, judge whether engineering continues；

When engineering continues, step 3 is performed；

When engineering terminates, step 6 is performed；

Step 6：Remove the wedge structure hydraulic pressure support displacement control system.

In terms of existing technologies, a kind of wedge structure hydraulic pressure support displacement control system provided by the utility model And its application method, at least with following beneficial technique effect：

1st, the human cost of foundation pit construction and the labour intensity of workman are significantly reduced：Distinguished by the locking wedge block Mutual face between the force column and the support tube contacts, and can reach the work shape for locking the inner pressurization hydraulic cylinder State, using the interoperation between the compression spring and No. three piston rods, it is possible to achieve whole-process automatic lock locking/unlocking institute The working condition of inner pressurization hydraulic cylinder is stated, manually operated locking nut is removed so as to avoid the need for more operators, effectively Reduce human cost, while also greatly reducing the labour intensity of operator.

2nd, the security of foundation pit construction has effectively been ensured：The wedge structure hydraulic pressure support displacement control that the utility model is provided System processed can automatically real-time lock the working condition of the inner pressurization hydraulic cylinder, it is to avoid be applied to foundation ditch because of the carelessness of people Work brings some hidden dangers, while also having ensured personal safety of the operator under foundation pit construction more adverse circumstances.

Brief description of the drawings

Fig. 1 is a kind of wedge structure hydraulic pressure support displacement control system off working state axle of the embodiment of the utility model one Cut-away illustration；

Fig. 2 is that a kind of wedge structure hydraulic pressure support displacement control system working condition axle of the embodiment of the utility model one is cutd open Cut schematic diagram；

Fig. 3 is the force column three-dimensional perspective of the embodiment of the utility model one；

Fig. 4 is the support tube three-dimensional perspective of the embodiment of the utility model one；

Fig. 5 is the force column three-dimensional perspective of another embodiment of the utility model；

Fig. 6 is the support tube three-dimensional perspective of another embodiment of the utility model；

Fig. 7 is the locking wedge block three-dimensional perspective of the embodiment of the utility model one；

Fig. 8 is a kind of hydraulic schematic diagram of wedge structure hydraulic pressure support displacement control system of the embodiment of the utility model one

In figure：100- wedge structure hydraulic pressure supports displacement control system, 1- inner pressurization hydraulics cylinder, 2- transitional cylinders, 3- tri- Guide pin bushing, No. bis- pistons of 4-, No. tri- piston rods of 5-, 6- support tubes, 7- locking wedge blocks, 8- compression springs, 9- glands, 10- force columns, No. tetra- guide pin bushings of 11-, 12- ball rings, No. bis- guide pin bushings of 14-, No. bis- piston rods of 15-, number piston rod of 16-, 17- cylinder barrels, 18- mono- Piston, number guide pin bushing of 19-, 30- pressure sensors, 31- displacement transducers, 32- two-position four-way solenoid valves, 33- regulating valves, 34- Three position four-way electromagnetic valve, 35- pumps, 36- fuel tanks, 37- overflow valves, 38-PLC control units, 61- cylinders, 62- supporting oblique surfaces, 71- Inclined-plane, 101- hemispheres groove, 102- slidings inclined-plane on the outside of medial slope, 71-

Specific embodiment

Below in conjunction with accompanying drawing and instantiation to the utility model proposes a kind of wedge structure hydraulic pressure support Bit andits control System and its application method are described in further detail.According to following explanation and claims, advantage of the present utility model and Feature will become apparent from.It should be noted that, accompanying drawing in the form of simplifying very much and uses non-accurately ratio, only to side Just the purpose of the utility model embodiment, is lucidly aided in illustrating.

With reference to a kind of wedge structure hydraulic pressure support displacement control system that Fig. 1 and Fig. 2, the embodiment of the utility model one are provided 100 are included from lower and inner pressurization hydraulic cylinder 1, transitional cylinder 2 and support tube 6 that set gradually, also including several locking wedge blocks 7 With force column 10；Wherein, inner pressurization hydraulic cylinder 1 and support tube 6 are fixedly connected by bolt with transitional cylinder 2 respectively, force column 10 It is arranged in support tube 6, and both axis overlap；Force column 10 is vertically placed on after sequentially passing through support tube 6 and excessive cylinder 2 On the top surface of inner pressurization hydraulic cylinder 1, and it is fixedly connected with inner pressurization hydraulic cylinder 1 by bolt；Locking wedge block 7 is arranged on support tube Between 6 and force column 10, the medial slope 71 and outside inclined-plane 72 of locking wedge block 7 respectively with the sliding inclined-plane 102 of force column 1 and The supporting oblique surface 62 of support tube 6 is contacted, the angle theta of medial slope 71 and perpendicular₁Less than outside inclined-plane 72 and perpendicular Angle theta₂, in the scope of the movement of locking wedge block 7, the space that force column 10 and support tube 6 are surrounded is less and less from top to down, Enable that locking wedge block 7 blocks force column 10, successfully pin the position of force column 10, some locking wedge blocks 7 are evenly distributed on The surrounding of force column 10；In locking working condition, especially, interior increasing is caused when inner pressurization hydraulic cylinder 1 occurs leakage or other When the situation that pressure cylinder 1 is unable to maintenance work pressure occurs, power transmission analysis is carried out to whole support system：Force column 10 will Pressure from building enclosure (not shown) passes to support tube 6 by locking wedge block 7, and support tube 6 is transmitted the force to again Inner pressurization hydraulic cylinder 1, is ultimately transferred to corresponding steel pipe support.

With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 5, wedge structure hydraulic pressure support displacement control system 100 also includes ball ring 12, and Ball ring 12 includes an approximate hemisphere and a disk, has a countersunk head screwed hole at the center of ball ring 12；Assembling Afterwards, hemisphere is embedded in the hemisphere groove of the top surface of force column 10, and ball ring 12 is hinged with force column 10；This sphere connects Design is touched, force transmission effect can be improved, in the case of support contact surface injustice, it is to avoid force column 10 is because by excessive non- Axial force and damage pressurizing hydraulic cylinder 1.

With reference to Fig. 1 and Fig. 2, wedge structure hydraulic pressure support displacement control system 100 also includes 3, No. two pistons 4 of No. three guide pin bushings And No. three piston rods 5；Wherein, No. three guide pin bushings 3 are a flanged cylindrical shrouds, be arranged on transitional cylinder 2 and support tube 6 it Between, and No. three upper and lower surfaces of the flange of guide pin bushing 3 lower surface respectively with support tube 6 and the upper end plane-plane contact of transitional cylinder 2, 2, No. three guide pin bushings 3 of transitional cylinder are fixedly connected with support tube 6 by some vertical bolts, and connecting bolt along the circumferential direction uniformly divides Cloth；No. three piston rods 5 are arranged in transitional cylinder 2 through No. three guide pin bushings 3, and No. two pistons 4 are arranged at No. three upper ends of piston rod 5, To be threadedly coupled between No. two pistons 4 and No. three piston rods 5, an a hydraulic fluid port for insertion is set on transitional cylinder 2, in support tube 6 One b hydraulic fluid port of insertion of upper setting, by injecting pressure oil to a hydraulic fluid ports and b hydraulic fluid ports respectively, can control No. three piston rods 5 to exist Vertical mobile status and position.

With continued reference to Fig. 1 and Fig. 2, wedge structure hydraulic pressure support displacement control system 100 also include some compression springs 8, Gland 9 and No. four guide pin bushings 11；Wherein, No. four guide pin bushings 11 are a flanged cylindrical shrouds, and No. four guide pin bushings 11 are from outer Gland 9 is passed inwardly through to be arranged in support tube 6, meanwhile, No. four guide pin bushings 11 are enclosed within the top of force column 10, and force column 10 is at No. four Do vertically movable in guide pin bushing 11；Compression spring 8 is corresponded with locking wedge block 7, and its quantity is equal to the sliding on force column 10 The quantity on inclined-plane 102, compression spring 8 is evenly distributed on No. four surroundings of guide pin bushing 11, and each compression spring 8 upper and lower ends All withstand on respectively on gland 9 and No. four flanges of guide pin bushing 11, especially, at the position of each correspondence compression spring 8, No. four A roundlet column-shaped projection is also set up on the flange of guide pin bushing 11, compression spring 8 is enclosed within corresponding roundlet column-shaped projection, can keep away The situation for exempting to cause compression spring to eject because of unbalance stress occurs.

With reference to Fig. 1, Fig. 2 and Fig. 8, wedge structure hydraulic pressure support displacement control system 100 also include PLC control unit 38, Two two-position four-way solenoid valves, 32, three position four-way electromagnetic valve 34 and an overflow valve 37, wherein, a two-position four-way electricity Magnet valve 32 is arranged on the oil circuit of connection working connection and a hydraulic fluid ports and b hydraulic fluid ports, and another two-position four-way solenoid valve 32 is arranged at interior increasing Pressure cylinder 1 enters, on oil return line, three position four-way electromagnetic valve 34 is arranged on total oil-feed oil circuit and total oil return circuit, is realized To working connection, inner pressurization hydraulic cylinder 1 and in a, b hydraulic fluid port, pressure oil is not controlled, improves precision and the degree of accuracy of control；Overflow Valve 37 is arranged on total oil-feed oil circuit, prevents pressure superpressure on total oil-feed oil circuit, protects the safety of whole system；Meanwhile, Pressure sensor 30 and displacement transducer 31 are also provided with inner pressurization hydraulic cylinder 1, can be with real-time monitoring pressurizing hydraulic cylinder 1 State；PLC control unit 38 respectively with two two-position four-way solenoid valves 32, three-position four-way electromagnetic directional valve 34 and overflow valve 37 Signal is connected, and according to actual conditions, PLC control unit 38 is changed by two two-position four-way solenoid valves 32,3-position 4-way electromagnetism Work order is sent to valve 34 and overflow valve 37 so that whole wedge structure hydraulic pressure support displacement control system 100 is according to will Ask and be operated.

With continued reference to Fig. 1 and Fig. 2, inner pressurization hydraulic cylinder 1 includes the 18, work of piston of guide pin bushing 19, of cylinder barrel 17, 16, No. two piston rods 15 of stopper rod and No. two guide pin bushings 14；A number guide pin bushing 19 is arranged in cylinder barrel 17, and both axis overlap, and It is connected through a screw thread between the two；A number piston rod 16 is arranged in cylinder barrel 17 through a guide pin bushing 19, and force column 10 passes through spiral shell Bolt is fixed on a top for piston rod 16, and a piston rod 16 can be vertically movable in cylinder barrel 17；In a number piston rod 16 Axial cavity with one end open, No. two guide pin bushings 14 and No. two piston rods 15 may be contained within axial cavity；No. two piston rods 15 pass through No. two guide pin bushings 14, a piston 18 to be arranged at No. two upper ends of piston rod 15, a piston 18 and No. two piston rods 15 It is connected through a screw thread between the two；19, piston rod 16 of a number guide pin bushing and cylinder barrel 17 surround the first oil suction chamber, a piston The piston rod 15 of piston 18, two of bar 16, one and No. two guide pin bushings 14 surround the second oil suction chamber, the first oil suction chamber and the second oil-feed Chamber is connected by the circular hole of insertion on a piston rod 16；Number piston rod 16, two guide pin bushing 14, two piston rod 15 and a cylinder Cylinder 17 surrounds the first oil back chamber, and 16, No. two piston rods 15 of a piston rod and a piston 18 surround the second oil back chamber, first Oil back chamber and the second oil back chamber are connected by the circular hole of insertion on No. two piston rods 15.

Referring to figs. 1 to a kind of wedge structure hydraulic pressure support displacement control system that Fig. 4, the embodiment of the utility model one are provided 100 include two locking wedge blocks 7, and two locking wedge blocks 7 are symmetricly set on around force column 10, and this design causes force column 10 simple structure, manufacturing cost is relatively low.

With reference to Fig. 1, Fig. 2, Fig. 5 and Fig. 6, a kind of wedge structure hydraulic pressure support position that another embodiment of the utility model is provided Moving control system 100 includes four locking wedge blocks 7, and four locking wedge blocks 7 are evenly distributed on around force column 10, any adjacent Two locking wedge blocks 7 between mutually arrangement in 90 °, this design causes that coupling mechanism force is more evenly distributed, and locking effect is more preferable.

Additionally, the utility model also provides a kind of application method of wedge structure hydraulic pressure support displacement control system 100, bag Include following steps：

Step 1：A kind of above-mentioned wedge structure hydraulic pressure support displacement control system 100 is provided；

Step 2：Wedge structure hydraulic pressure support displacement control system 100 is arranged at into steel pipe support to be controlled with required Light deformation Foundation pit enclosure wall between, force column 10 is withstood on the pre-embedded steel slab of foundation pit enclosure wall；

Step 3：Some steel plate cushion blocks are set between inner pressurization hydraulic cylinder 1 and steel pipe support, are applied to the steel pipe support Plus the axle power of design requirement, it is ensured that an overhang for piston rod 16 is less than impulse stroke, sets axle power early warning lower limit；

Step 4：Monitoring axle power change：

When axle power reaches the axle power early warning lower limit, inner pressurization hydraulic cylinder 1 performs pressurization instruction, to the A hydraulic fluid ports Oiling, inner pressurization hydraulic cylinder 1 pressurizes；

When axle power is restored to design requirement axle power value, judge whether to perform a retracting action of piston rod 16；

When 16 retracting action of piston rod is not performed, repeat step 4；

When 16 retracting action of piston rod is performed, step 5 is gone to；

Step 5：Perform and instructed to the oiling of b hydraulic fluid ports, No. three piston rods 5 stretch out, head on locking wedge block 7 and be moved upwards up to pole Extreme position, stops to b hydraulic fluid port oilings, and inner pressurization hydraulic cylinder 1 performs pressure release instruction, and to B hydraulic fluid port oilings, inner pressurization hydraulic cylinder 1 is let out Pressure a, piston rod 16 bounces back；

When a piston rod 16 retracts to initial position, judge whether engineering continues；

When engineering continues, step 3 is performed；

When engineering terminates, step 6 is performed；

Step 6：Remove wedge structure hydraulic pressure support displacement control system 100.

In sum, the utility model provides a kind of wedge structure hydraulic pressure support displacement control system and its application method, The working condition of the hydraulic cylinder can be in real time locked, can avoid manually operating the wave of a large amount of manpower financial capacities for causing Take, further reduce the labour intensity of operator；Meanwhile, it is capable to some for eliminating that some bring by human negligence are dangerous Hidden danger, further ensures that security of foundation ditch construction is carried out in an orderly manner.

Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the utility model scope Calmly, the those of ordinary skill in the utility model field does according to the disclosure above content any change, modification, belonging to right will Seek the protection domain of book.

Claims (8)

1. a kind of wedge structure hydraulic pressure support displacement control system, it is characterised in that including inner pressurization hydraulic cylinder, transitional cylinder, branch Support cylinder, some locking wedge blocks and force column, the inner pressurization hydraulic cylinder, the transitional cylinder and the support tube from below to up according to Secondary setting, the inner pressurization hydraulic cylinder and the support tube are fixedly connected by bolt with the transitional cylinder respectively, the stress Post is arranged in the support tube, and the force column is fixed by bolts on the inner pressurization hydraulic cylinder top surface, the locking wedge Block is arranged between the force column and the support tube, the medial slope and outside inclined-plane of the locking wedge block respectively with it is described The supporting oblique surface contact on the sliding inclined-plane and the support tube of force column, the angle of the medial slope and perpendicular less than and The angle on the outside inclined-plane and perpendicular, the locking wedge block is evenly distributed on the surrounding of the force column.

2. as claimed in claim 1 a kind of wedge structure hydraulic pressure support displacement control system, it is characterised in that also including sphere Pad, has a countersunk head screwed hole at the center of the ball ring, and the ball ring includes the approximate hemisphere for linking together Body and a disk, the hemisphere are embedded in the hemisphere groove of the top surface of the force column, the ball ring with it is described Stress is column articulated.

3. as claimed in claim 1 a kind of wedge structure hydraulic pressure support displacement control system, it is characterised in that including described in two Locking wedge block, two locking wedge blocks are symmetricly set in around the force column.

4. as claimed in claim 1 a kind of wedge structure hydraulic pressure support displacement control system, it is characterised in that including described in four Locking wedge block, four locking wedge blocks are arranged at around the force column, and any two neighboring locking wedge block is mutually 90 ° of arrangements.

5. as claimed in claim 1 a kind of wedge structure hydraulic pressure support displacement control system, it is characterised in that the interior boost fluid Cylinder pressure includes cylinder barrel, guide pin bushing, piston, piston rod, No. two piston rods and No. two guide pin bushings, and a guide pin bushing sets It is placed in the cylinder barrel, a guide pin bushing is threadedly coupled with the cylinder barrel, a piston rod passes through a guide pin bushing It is arranged in the cylinder barrel, the force column is fixedly connected by bolt with a piston rod, in a piston rod Axial cavity with one end open, No. two guide pin bushings and No. two piston rods may be contained within the axial cavity, institute No. two piston rods through No. two guide pin bushings are stated, a piston is arranged at the upper end of No. two piston rods, described No. one Piston is connected through a screw thread with No. two piston rods.

6. a kind of wedge structure hydraulic pressure support displacement control system as described in claim 1-5 is any, it is characterised in that also include No. three guide pin bushings, No. two pistons and No. three piston rods, No. three guide pin bushings are a flanged cylindrical shrouds, and described No. three are led Set is arranged between the transitional cylinder and the support tube, the upper and lower end face of the flange respectively with the lower surface of the support tube With the upper end plane-plane contact of the transitional cylinder, the transitional cylinder, No. three guide pin bushings and the support tube pass through some vertical spiral shells Bolt is fixedly connected, and the bolt is distributed uniformly and circumferentially, and No. three piston rods are arranged at institute through No. three guide pin bushings State in transitional cylinder, No. two pistons are arranged at the upper end of No. three piston rods, No. two pistons and No. three pistons It is threaded connection between bar, an a hydraulic fluid port for insertion is set on the transitional cylinder, an insertion is set on the support tube B hydraulic fluid ports.

7. as claimed in claim 6 a kind of wedge structure hydraulic pressure support displacement control system, it is characterised in that if also including dry-pressing Contracting spring, gland and No. four guide pin bushings, No. four guide pin bushings are a flanged cylindrical shrouds, and No. four guide pin bushings pass through institute State gland to be arranged in the support tube, No. four guide pin bushings are enclosed within the top of the force column, the compression spring uniformly sets The surrounding of No. four guide pin bushings is placed in, the compression spring is corresponded with the locking wedge block, the two ends of the compression spring Withstand on respectively on the flange of the gland and No. four guide pin bushings.

8. as claimed in claim 7 a kind of wedge structure hydraulic pressure support displacement control system, it is characterised in that also including PLC control Unit processed, two two-position four-way solenoid valves, a three position four-way electromagnetic valve and an overflow valves, wherein, one described two Four way solenoid valve is arranged on connection working connection and the oil circuit of a hydraulic fluid ports and the b hydraulic fluid ports, another described two-position four-way electricity Magnet valve be arranged at the inner pressurization hydraulic cylinder enter, on oil return line, the three position four-way electromagnetic valve be arranged at total oil-feed oil circuit with it is total On oil return circuit, the overflow valve is arranged on total oil-feed oil circuit, the PLC control unit two described with two respectively The connection of four way solenoid valve, the three position four-way electromagnetic valve and the overflow valve signal.