CN103775425B - A kind of novel hydraulic jacking equipment - Google Patents
A kind of novel hydraulic jacking equipment Download PDFInfo
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- CN103775425B CN103775425B CN201410059487.0A CN201410059487A CN103775425B CN 103775425 B CN103775425 B CN 103775425B CN 201410059487 A CN201410059487 A CN 201410059487A CN 103775425 B CN103775425 B CN 103775425B
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Abstract
The invention discloses a kind of novel hydraulic jacking equipment, it comprises hydraulic lifting arm (1), hydraulic system (2), electric control box (4), laser distance meter (3), hydraulic lifting arm (1) comprises cylinder barrel (5), first stage piston bar (6), secondary piston bar (11), interior level piston rod (12), outlet pipe (13), seal assembly, support ring (25), axle is with positive stop key (23), hole is with positive stop key (22), long keyway (36), feather key (24), is provided with one-way valve opening plunger assembly (28) in bonnet (14), one-way valve opening plunger assembly (28) comprises plunger (28-6), hydraulic fluid port (28-1), passage (28-2), reverse one-way valve (28-3), thimble (28-4), is provided with one-way sealing assembly (27) in secondary piston bar (11), one-way sealing assembly (27) comprises sealed plunger (27-3), one-way valve (27-1), sealed plunger (27-3) connects the air vent seat (27-2) be connected with outlet pipe (13), and total travel anti-rotation of the present invention is also with laser distance meter independently to detect to realize piston rod position, from main control, automatic maintenance needed height and lifting order controlled.
Description
Technical field:
The present invention relates to a kind of hydraulic lifting equipment, particularly relate to a kind of total travel anti-rotation and independently detect to realize antenna lifting heights with laser distance meter, from the controlled novel hydraulic jacking equipment of main control, automatic maintenance needed height and lifting order.
Background technique:
Along with the fast development of the communication technology, 2G, 3G, 4G network occurs and extensive use in succession, and meanwhile emergency communication equipment also needs the development immediately following the communication technology.In this case, original mechanical type, DYN dynamic jacking equipment can not meet present situation, and the hydraulic lifting equipment being therefore applied to two net is developed thereupon.Current existing electrodynamic type, mechanical ascending and descending equipment can not meet the demand of following several respects:
1, existing jacking equipment can only can not be applied to two net Emergency communication vehicle by a kind of antenna of load, cannot realize two net and take the lead in being separated, the most latter incorporated major function during recovery.
2, volume excessive, lifting heights, lifting limited mass: the volume under mechanical type, electric lifting equipment retracted mode is very large, rise rear stability is poor, therefore cannot produce the jacking equipment of lifting heights more than 13 meters, and can only lift stage antenna, two-stage antenna is just overweight.
When 3, working long hours easily there is sedimentation in lift height, and antenna can not remain on predetermined altitude always to be continued to provide stable, reliable signal.
Summary of the invention:
The object of the invention is to overcome the deficiency of above-mentioned existing device and a kind of total travel anti-rotation be provided and independently detect to realize piston rod position with laser distance meter, from main control, automatically keep needed height and the controlled novel hydraulic jacking equipment of lifting order.
Object of the present invention can be reached by following measure: a kind of novel hydraulic jacking equipment, and it comprises hydraulic lifting arm, hydraulic system, electric control box, it is characterized in that being provided with hydraulic lifting arm in hydraulic system, hydraulic system is provided with laser distance meter, electric control box, hydraulic system, laser distance meter is all connected with electric control box, and hydraulic lifting arm comprises cylinder barrel, is provided with first stage piston bar in cylinder barrel, secondary piston bar is provided with in first stage piston bar, be provided with interior level piston rod in secondary piston bar, in interior level piston rod, be provided with outlet pipe, between cylinder barrel and first stage piston bar, between first stage piston bar and secondary piston bar, seal assembly is provided with between secondary piston bar and interior level piston rod, support ring, axle positive stop key, hole positive stop key, cylinder barrel, first stage piston bar, the inwall of secondary piston bar is equipped with long keyway, first stage piston bar, the outer wall of secondary piston bar and interior level piston rod is equipped with feather key, and feather key is placed in keyway, and in cylinder barrel, the rear end of first stage piston bar is provided with bonnet, is provided with one-way valve opening plunger assembly in bonnet, and one-way valve opening plunger assembly comprises plunger, hydraulic fluid port, passage, reverse one-way valve, thimble, is provided with hydraulic fluid port in plunger, passage, hydraulic fluid port and passage communicate, and plunger is provided with reverse one-way valve, seal ring, thimble, in secondary piston bar, one end of interior level piston rod is provided with one-way sealing assembly, and the secondary piston bar the other end connects secondary load dish, and one-way sealing assembly comprises sealed plunger, one-way valve, is provided with one-way valve in sealed plunger, sealed plunger connects air vent seat, and air vent seat connects outlet pipe.
In order to realize object of the present invention further, described hydraulic system comprises fuel tank, hydraulic system power unit, hydraulic lifting arm penetrates fuel tank, hydraulic system power unit comprises motor, motor connects pair vane pump, pair vane pump connects inlet line, inlet line connects fuel tank, the high-capacity pump of pair vane pump passes through the large discharge mouth of high-capacity pump oil feed line connection valve block assembly, the low-capacity pump of pair vane pump passes through the small flow mouth of low-capacity pump oil feed line connection valve block assembly, the return opening of valve block assembly connects return line, the oil-feed port of valve block assembly connects lifting bar oil feed line, return line connects fuel tank, lifting bar oil feed line connects hydraulic fluid port, valve block assembly comprises pressure transducer, branch road one-way valve, first solenoid directional control valve, relief valve, electromagnetic relief valve, second solenoid directional control valve, working connection one-way valve, Pilot operated check valve, small flow mouth is connected with the P mouth of the first solenoid directional control valve by the first oil circuit, the A mouth of the first solenoid directional control valve is connected with branch road one-way valve by the second oil circuit, branch road one-way valve is communicated with oil-feed port by the 3rd oil circuit, the T mouth of the first solenoid directional control valve takes back fuel tank, one end of relief valve is connected to the first oil circuit, the other end takes back fuel tank, the B mouth of the first solenoid directional control valve is connected to the X mouth of Pilot operated check valve by the 4th oil circuit, the B mouth of Pilot operated check valve is connected to oil-feed port, the A mouth of Pilot operated check valve takes back fuel tank, pressure transducer is connected to the second oil circuit, large discharge mouth is connected with working connection one-way valve by the 5th oil circuit, working connection one-way valve is communicated with oil-feed port by the 6th oil circuit, one end of electromagnetic relief valve is connected on the 5th oil circuit, the other end connects return opening, the P mouth of the second solenoid directional control valve is communicated with B mouth and is connected to the 5th oil circuit, the A mouth of the second solenoid directional control valve is communicated with T mouth and is connected to return opening, first solenoid directional control valve of the valve block assembly of the power unit of hydraulic system Electrical heads YV1, the Electrical heads YV2 of the first solenoid directional control valve, the Electrical heads YV3 of the second solenoid directional control valve, the Electrical heads YV4 of electromagnetic relief valve, , pressure transducer, motor is all connected with electric control box.
In order to realize object of the present invention further, at least one-level intergrade piston rod is provided with successively between described first stage piston bar and secondary piston bar, intergrade rod seal assembly parts at different levels, support ring, axle positive stop key, hole positive stop key, cylinder barrel, first stage piston bar, intergrade piston rod at different levels, the inwall of secondary piston bar is equipped with long keyway, intergrade piston rod at different levels, the outer wall of secondary piston bar and interior level piston rod is equipped with feather key, feather key is all the time at keyway gliding in tracks, prevent from relatively rotating between the cylinder barrel of the two poles of the earth, one end of the intergrade piston rod adjacent with secondary piston bar is connected windproof dish.
In order to realize object of the present invention further, being provided with 4 grades of intergrade piston rods between described first stage piston bar and secondary piston bar successively, being respectively second piston rod, three grades of piston rods, level Four piston rod, Pyatyi piston rod, second piston rod is provided with in first stage piston bar, three grades of piston rods are provided with in second piston rod, level Four piston rod is provided with in three grades of piston rods, Pyatyi piston rod is provided with in level Four piston rod, secondary piston bar is provided with in Pyatyi piston rod, secondary seal assembly parts is provided with between first stage piston bar and second piston rod, three grades of seal assemblies are provided with between second piston rod and three grades of piston rods, level Four seal assembly is provided with between three grades of piston rods and level Four piston rod, be provided with Pyatyi seal assembly between level Four piston rod and Pyatyi piston rod, between Pyatyi piston rod and secondary piston bar, be provided with secondary seal assembly parts, between first stage piston bar and second piston rod, between second piston rod and three grades of piston rods, between three grades of piston rods and level Four piston rod, between level Four piston rod and Pyatyi piston rod, support ring is equipped with between Pyatyi piston rod and secondary piston bar, axle positive stop key, hole positive stop key, cylinder barrel, first stage piston bar, second piston rod, three grades of piston rods, level Four piston rod, Pyatyi piston rod, the inwall of secondary piston bar is equipped with long keyway, first stage piston bar, second piston rod, three grades of piston rods, level Four piston rod, Pyatyi piston rod, the outer wall of secondary piston bar and interior level piston rod is equipped with feather key, and feather key is all the time at keyway gliding in tracks, and prevent from relatively rotating between the cylinder barrel of the two poles of the earth, one end of Pyatyi piston rod connects windproof dish.
The present invention can carry two-stage antenna on top, realize two-stage antenna to be preferentially separated, two-stage antenna is overall again after throwing off completely to be raised, total travel anti-rotation in the process raised, avoid cable winding in shaft, antenna is elevated to predetermined altitude, and motor cuts out automatically, auto lock lifting bar, avoids antenna height to decline.In the process of Antenna Operation, laser distance meter detects antenna height constantly, avoid occurring larger sedimentation, once sedimentation exceeds allowed band, electric control box opens motor automatically, lifting bar is risen to former height, and anti-rotating function avoids antenna and rotates lossing signal because windage produces simultaneously, ensures that communications equipment running is stable, reliable.After equipment use, reclaim antenna, two-stage entire physical falls, and last two-stage antenna just merges and is superimposed, and reclaims complete, needs anti-rotating function to avoid two-stage antenna mutual " fighting " in the process.
The major function of each several part of the present invention:
(1) hydraulic lifting arm: the main interior level piston rod (first order antenna) that realizes first goes out to return function afterwards; Total travel anti-rotation in lifting process; There is automatic ventilating function.Lifting weight reaches 600Kg.Maximum lift height 9 meters to 22 meters.
(2) hydraulic system: power is provided; Oil circuit control moves towards; Be responsible for the rising of hydraulic lifting arm, decline; Fast, rise at a slow speed; System overload is protected.
(3) laser distance meter: application laser distance meter constantly Emission Lasers detects height, and testing result is sent to electric control box.
(4) electric control box: the control being responsible for all functions, setting parameter.
The present invention can produce following good effect compared with the prior art: the present invention is by installing multichannel one-way valve in hydraulic lifting arm inside and piston structure oil circuit control trend can control the stretching out of minimum piston rod, retraction order, and then reach two-stage antenna and be preferentially separated, the most latter incorporated object during recovery; By at inner wall of cylinder processing keyway track at different levels, realize the total travel anti-rotating function in equipment telescopic process at piston rod extenal fixation one feather key at different levels; Laser distance meter can detect antenna height by Emission Lasers constantly, and testing result is sent to electric control box, electric control box judges according to transmission result, gives an order, and achieves equipment lifting heights position and independently detects, from main control, the function automatically keeping needed height.
This equipment can meet the requirement that Emergency communication vehicle realizes two net application, has filled up the market vacancy of Emergency communication vehicle hydraulic up-down apparatus field, there is no this series products both at home and abroad at present.
Accompanying drawing illustrates:
Fig. 1 is surface structure schematic diagram of the present invention;
Fig. 2 is the structural representation of the hydraulic lifting arm of one embodiment of the present invention:
Fig. 3 is the partial enlarged drawing of Fig. 2;
Fig. 4 is the structural representation of the hydraulic lifting arm of another embodiment of the present invention:
Fig. 5 is the partial enlarged drawing of Fig. 4;
Fig. 6 is the surface structure schematic diagram of hydraulic system of the present invention;
Fig. 7 is the structural representation of the hydraulic system power unit of Fig. 6;
Fig. 8 is hydraulic schematic diagram of the present invention.
Embodiment: the specific embodiment of the present invention is elaborated below in conjunction with accompanying drawing:
Embodiment 1: a kind of novel hydraulic jacking equipment (see Fig. 1, see Fig. 2, Fig. 3), it comprises hydraulic lifting arm 1, hydraulic system 2, laser distance meter 3, electric control box 4.Be provided with hydraulic lifting arm 1 in hydraulic system 2, hydraulic system 2 is provided with laser distance meter 3, electric control box 4.
The present embodiment is three grades, 9 meters can be risen, hydraulic lifting arm 1 comprises cylinder barrel 5, first stage piston bar 6 is provided with in cylinder barrel 5, secondary piston bar 11 is provided with in first stage piston bar 6, interior level piston rod 12 is provided with in secondary piston bar 11, outlet pipe 13 is provided with in interior level piston rod 12, primary seal assembly parts 15 is provided with between cylinder barrel 5 and first stage piston bar 6, secondary seal assembly parts 20 is provided with between first stage piston bar 6 and secondary piston bar 11, interior level seal assembly 21 is provided with between secondary piston bar 11 and interior level piston rod 12, between cylinder barrel 5 and first stage piston bar 6, between first stage piston bar 6 and secondary piston bar 11, support ring 25 is equipped with between secondary piston bar 11 and interior level piston rod 12, axle positive stop key 23, hole positive stop key 22, cylinder barrel 5, first stage piston bar 6, the inwall of secondary piston bar 11 is equipped with long keyway 36, first stage piston bar 6, the outer wall of secondary piston bar 11 and interior level piston rod 12 is equipped with feather key 24, feather key 24 is all the time at keyway 36 gliding in tracks, prevent from relatively rotating between the cylinder barrel of the two poles of the earth, in cylinder barrel 5, the rear end of first stage piston bar 6 is provided with bonnet 14, one-way valve opening plunger assembly 28 is provided with in bonnet 14, one-way valve opening plunger assembly 28 comprises plunger 28-6, hydraulic fluid port 28-1, passage 28-2, reverse one-way valve 28-3, thimble 28-4, hydraulic fluid port 28-1 is provided with in plunger 28-6, passage 28-2, hydraulic fluid port 28-1 and passage 28-2 communicates, plunger 28-6 is provided with reverse one-way valve 28-3, seal ring 28-5, thimble 28-4.In secondary piston bar 11, one end of interior level piston rod 12 is provided with one-way sealing assembly 27, secondary piston bar 11 the other end connects secondary load dish 9, one-way sealing assembly 27 comprises sealed plunger 27-3, one-way valve 27-1, is provided with one-way valve 27-1 in sealed plunger 27-3.Sealed plunger 27-3 connects air vent seat 27-2, and air vent seat 27-2 connects outlet pipe 13, and the other end of interior level piston rod 12 connects one-level loading disk 29.Bonnet 14, between secondary piston bar 11 and one-way sealing assembly 27 formed the 4th oil pocket 32, the first oil pocket 33 is formed between one-way valve opening plunger assembly 28 and one-way sealing assembly 27, the second oil pocket 34 is formed between the sealed plunger 27-3 of one-way sealing assembly 27 and air vent seat 27-2, formation the 3rd oil pocket 35 between interior level piston rod 12 and outlet pipe 13, outlet pipe 13 communicates with the 3rd oil pocket 35.Be provided with one-way valve 27-1 between first oil pocket 33 and the second oil pocket 34, between passage 28-2 and the 4th oil pocket 32, be provided with reverse one-way valve 28-3.
Hydraulic system 2(is see Fig. 6, Fig. 7, Fig. 8) comprise fuel tank 2-1, hydraulic system power unit 2-2, hydraulic lifting arm 1 penetrates fuel tank 2-1, the in-built hydraulic oil of fuel tank 2-1.Hydraulic system power unit 2-2 comprises motor 37, motor 37 connects pair vane pump 38, pair vane pump 38 connects inlet line 40, inlet line 40 connects fuel tank 2-1, the high-capacity pump 38-1 of pair vane pump 38 passes through the large discharge mouth 39-9 of high-capacity pump oil feed line 41 connection valve block assembly 39, the low-capacity pump 38-2 of pair vane pump 38 passes through the small flow mouth 39-10 of low-capacity pump oil feed line 42 connection valve block assembly 39, the return opening 39-11 of valve block assembly 39 connects return line 43, the oil-feed port 39-12 of valve block assembly 39 connects lifting bar oil feed line 44, return line 43 connects fuel tank 2-1, lifting bar oil feed line 44 connects hydraulic fluid port 28-1.Valve block assembly 39 comprises pressure transducer 39-1, branch road one-way valve 39-2, first solenoid directional control valve 39-3, relief valve 39-4, electromagnetic relief valve 39-5, second solenoid directional control valve 39-6, working connection one-way valve 39-7, Pilot operated check valve 39-8, small flow mouth 39-10 is connected with the P mouth of the first solenoid directional control valve 39-3 by the first oil circuit 39-13, the A mouth of the first solenoid directional control valve 39-3 is connected with branch road one-way valve 39-2 by the second oil circuit 39-14, branch road one-way valve 39-2 is communicated with oil-feed port 39-12 by the 3rd oil circuit 39-15, the T mouth of the first solenoid directional control valve 39-3 takes back fuel tank 45, one end of relief valve 39-4 is connected to the first oil circuit 39-13, the other end takes back fuel tank 45, the B mouth of the first solenoid directional control valve 39-3 is connected to the X mouth of Pilot operated check valve 39-8 by the 4th oil circuit 39-16, the B mouth of Pilot operated check valve 39-8 is connected to oil-feed port 39-12, the A mouth of Pilot operated check valve 39-8 takes back fuel tank 45, pressure transducer 39-1 is connected to the second oil circuit 39-14, large discharge mouth 39-9 is connected with working connection one-way valve 39-7 by the 5th oil circuit 39-17, working connection one-way valve 39-7 is communicated with oil-feed port 39-12 by the 6th oil circuit 39-18, one end of electromagnetic relief valve 39-5 is connected on the 5th oil circuit 39-17, the other end connects return opening 39-11, the P mouth of the second solenoid directional control valve 39-6 is communicated with B mouth and is connected to the 5th oil circuit 39-17, the A mouth of the second solenoid directional control valve 39-6 is communicated with T mouth and is connected to return opening 39-11.
The Electrical heads YV1 of the first solenoid directional control valve 39-3 of the valve block assembly 39 of the power unit of hydraulic system 2, the Electrical heads YV2 of the first solenoid directional control valve 39-3, the Electrical heads YV3 of the second solenoid directional control valve 39-6, the Electrical heads YV4 of electromagnetic relief valve 39-5, pressure transducer 39-1, motor 37, laser distance meter 3 are all connected with electric control box 4.
Course of action (the present embodiment can rise 9 meters):
Uphill process: first input lift height on electric control box 4.Click rising and press button, electric control box 4 is given an order and is made corresponding control to the power unit of hydraulic system 2, the Electrical heads YV2 of the first solenoid directional control valve 39-3 of hydraulic system power unit, the Electrical heads YV3 of the second solenoid directional control valve 39-6, the Electrical heads YV4 of electromagnetic relief valve 39-5 obtain electric, the first solenoid directional control valve 39-3, the second solenoid directional control valve 39-6, electromagnetic relief valve 39-5 action.Start with rear motor 37, pair vane pump 38 oil suction, the fluid of high-capacity pump oil feed line 41 and low-capacity pump oil feed line 42 is respectively through large discharge mouth 39-9, small flow mouth 39-10 enters valve block assembly 39, the hydraulic oil of large discharge mouth 39-9 enters the 6th oil circuit 39-18 by way of the 5th oil circuit 39-17 through working connection one-way valve 39-7, and then arrive oil-feed port 39-12, the hydraulic oil of small flow mouth 39-10 enters the P mouth of the first solenoid directional control valve 39-3 by way of the first oil circuit 39-13, after the first solenoid directional control valve 39-3, enter the second oil circuit 39-14 from A mouth enter the 3rd oil circuit 39-15 by way of branch road one-way valve 39-2 again and then arrive oil-feed port 39-12, collect with the hydraulic oil of the high-capacity pump 38-1 of pair vane pump 38 and enter oil feed line 44 from oil-feed port 39-12 and then arrive lifting bar hydraulic fluid port 28-1, hydraulic oil arrives second oil pocket 34 by way of the first oil pocket 33 through one-way valve 27-1 by passage 28-2, eventually pass outlet pipe 13 and arrive the 3rd oil pocket 35, the interior level piston rod 12(first order antenna) start to stretch out, after interior level piston rod 12 stretches out completely (two-stage antenna departs from completely), unidirectional blocking structure 27 and one-way valve opening plunger assembly 28 are because the little system pressure that causes of lifting surface area starts to rise, pressure transducer 39-1 sends electric control box 4 to the pressure sensed, along with pressure increase to the parameter pre-set time, the Electrical heads YV2 of the first solenoid directional control valve 39-3 of electric control box 4 hydraulic control system dynamic unit continues electric, the Electrical heads YV3 of the second solenoid directional control valve 39-6, the Electrical heads YV4 dead electricity of electromagnetic relief valve 39-5, second solenoid directional control valve 39-6, electromagnetic relief valve 39-5 action, the hydraulic oil of the high-capacity pump 38-1 output of pair vane pump 38 is all through electromagnetic relief valve 39-5, second solenoid directional control valve 39-6 zero-pressure overflows to return opening 39-11 and gets back to fuel tank 45, the hydraulic oil only having the low-capacity pump 38-2 of pair vane pump 38 to export arrives oil-feed port 39-12, now system proceeds to high-pressure low-flow to lifting bar 1 fuel feeding, secondary piston bar 11(second level antenna) under high oil pressure effect, depart from one-way valve opening plunger assembly 28 fast with one-way sealing structure 27, hydraulic oil enters the 4th oil pocket 32, throw off moment one-way valve 27-1 close and block the 3rd oil pocket 35, simultaneously throw off moment system pressure drop return normal value, pressure transducer 39-1 detects that this changes, the control of program setting made again by electric control box 4, the Electrical heads YV2 of the first solenoid directional control valve 39-3 continues electric, the Electrical heads YV3 of the second solenoid directional control valve 39-6, the Electrical heads YV4 of electromagnetic relief valve 39-5 again electric, second solenoid directional control valve 39-6, electromagnetic relief valve 39-5 action, the hydraulic oil that the high-capacity pump 38-1 of pair vane pump 38 exports arrives oil-feed port 39-12 through working connection one-way valve 39-7 again, the high-capacity pump 38-1 of pair vane pump 38 gives lifting bar 1 fuel feeding together with low-capacity pump 38-2, system proceeds to low pressure and mass flow fuel feeding, first stage piston bar 6 starts quick rising with all the other piston rods, one, secondary antenna relative position is constant, integrally by lifting, after first stage piston bar 6 stretches out completely, the secondary piston bar 11 of inner side just starts to stretch out.When lift height reaches preset height, laser distance meter 3 detects this elevation information and feeds back to electric control box 4, the operation of all Electrical heads YV1, YV2, YV3, YV4 dead electricity and disable motor 37 made by electric control box 4, the spool of the first solenoid directional control valve 39-3, the second solenoid directional control valve 39-6, electromagnetic relief valve 39-5 all resets, pair vane pump 38 stops oil suction, and uphill process terminates.Can click stop button in uphill process any time, lifting bar 1 can stop to arbitrary height.Because every one-level inner wall of cylinder of lifting bar 1 is all processed with long keyway 36, every one-level piston rod cylindrical all fixes a feather key 24, feather key 24 is all the time at keyway 36 gliding in tracks, limit the radial rotating of every one-level piston rod, play total travel anti-rotating function, in lifting process, avoid cable winding in shaft.
Stable operation process, the time that Emergency communication vehicle is placed on open air is generally long, and detect antenna height constantly by laser distance meter 3, once lifting bar 1 settling amount exceeds allowed band, electric control box 4 can make instruction, and antenna is risen back original height arranged.When electric control box 4 does not indicate, the power section of hydraulic system 2 is close all the time, plays the effect of saving the energy.Because the anti-rotating function of lifting bar 1, even if there is large wind open air, antenna also can be made to rotate, ensure that the stable, reliable of Antenna Operation.
Decline process, Emergency communication vehicle is finished using to be needed to reclaim antenna.Click decline and press button, electric control box 4 is given an order and is made corresponding control to the power unit of hydraulic system 2, the Electrical heads YV1 of the first solenoid directional control valve 39-3 of hydraulic system power unit obtains electric, first solenoid directional control valve 39-3 action, start with rear motor 37, oil pump 38 oil suction, the output fluid of high-capacity pump is all through electromagnetic relief valve 39-5, second solenoid directional control valve 39-6 zero-pressure overflows to return opening 39-11 and gets back to fuel tank 45, the hydraulic oil of the low-capacity pump 38-2 of pair vane pump 38 enters the P mouth of the first solenoid directional control valve 39-3 through the first oil circuit 39-13, enter the X mouth of Pilot operated check valve 39-8 from B mouth after the first solenoid directional control valve 39-3, the Stress control of this road hydraulic oil is relied on to open Pilot operated check valve 39-8, the unnecessary hydraulic oil that the low-capacity pump 38-2 of pair vane pump 38 exports overflows back fuel tank 45 at the first oil circuit 39-13 place through relief valve 39-4, after Pilot operated check valve 39-8 is opened, fluid in lifting bar 1 oppositely enters oil-feed port 39-12 by induced pressure and is back to fuel tank 45 through Pilot operated check valve 39-8, because the hydraulic oil in one-way sealing structure 27 shutoff the 3rd oil pocket 35, so the interior level piston rod 12(first order antenna) cannot first bounce back, but at first secondary piston bar 11 and interior level piston rod 12 integrally one to decline, then be that first stage piston bar 6 starts retraction, when first stage piston bar 6 bounces back close to bonnet 14, when the seal ring 28-5 of one-way valve opening plunger assembly 28 enters one-way sealing structure 27 inner chamber, rate of descent slows down at once, " pocketed oil " that produce in 4th oil pocket 32 is by reverse one-way valve 28-3 inlet passage 28-2 oil sump tank 45, first stage piston bar 6 slowly bounces back, play cushioning effect.First stage piston bar 6 is with secondary piston bar 11(second level antenna) when retracting to the end, one-way valve 27-1 in one-way sealing structure 27 is opened by the thimble 28-4 of one-way valve opening plunger assembly 28, the interior level piston rod 12(first order antenna) just start to retract, simultaneously, because unidirectional blocking structure 27 causes the air in the 3rd oil pocket 35 to remain in above fluid always, when one-way valve 27-1 opens, the air of top is first discharged by outlet pipe 13, plays automatic ventilating function.Until second level antenna be retracted into the end with first order antenna merge be superimposed after, distance detection device 3 sends signal to electric control box 4, the operation of all Electrical heads YV1, YV2, YV3, YV4 dead electricity and disable motor 37 made by electric control box 4, the valve core reset of the first solenoid directional control valve 39-3, pair vane pump 38 stops oil suction, and decline process terminates.Lifting bar 1 can rest on arbitrary height in decline process.In decline process, because total travel anti-rotating function ensure that the communications cable can reclaim smoothly, be priorly that of avoiding first order antenna and second level antenna merging in additive process and fight mutually.
Embodiment 2: a kind of novel hydraulic jacking equipment is (see Fig. 1, Fig. 4, Fig. 5, ) the present embodiment hydraulic lifting arm is seven grades, can rise 18 meters, its structure and principle are substantially with embodiment 1, and its difference is to be provided with second piston rod 7 successively between first stage piston bar 6 and secondary piston bar 11, three grades of piston rods 8, level Four piston rod 9, Pyatyi piston rod 10, second piston rod 7 is provided with in first stage piston bar 6, three grades of piston rods 8 are provided with in second piston rod 7, level Four piston rod 9 is provided with in three grades of piston rods 8, Pyatyi piston rod 10 is provided with in level Four piston rod 9, secondary piston bar 11 is provided with in Pyatyi piston rod 10, secondary seal assembly parts 16 is provided with between first stage piston bar 6 and second piston rod 7, three grades of seal assemblies 17 are provided with between second piston rod 7 and three grades of piston rods 8, level Four seal assembly 18 is provided with between three grades of piston rods 8 and level Four piston rod 9, Pyatyi seal assembly 19 is provided with between level Four piston rod 9 and Pyatyi piston rod 10, secondary seal assembly parts 20 is provided with, between first stage piston bar 6 and second piston rod 7 between Pyatyi piston rod 10 and secondary piston bar 11, between second piston rod 7 and three grades of piston rods 8, between three grades of piston rods 8 and level Four piston rod 9, between level Four piston rod 9 and Pyatyi piston rod 10, support ring 25 is equipped with between Pyatyi piston rod 10 and secondary piston bar 11, axle positive stop key 23, hole positive stop key 22, cylinder barrel 5, first stage piston bar 6, second piston rod 7, three grades of piston rods 8, level Four piston rod 9, Pyatyi piston rod 10, the inwall of secondary piston bar 11 is equipped with long keyway 36, first stage piston bar 6, second piston rod 7, three grades of piston rods 8, level Four piston rod 9, Pyatyi piston rod 10, the outer wall of secondary piston bar 11 and interior level piston rod 12 is equipped with feather key 24, and feather key 24, all the time at keyway 36 gliding in tracks, prevents from relatively rotating between the cylinder barrel of the two poles of the earth, and one end of Pyatyi piston rod 10 connects windproof dish 31.
Course of action (the present embodiment can rise 18 meters):
Uphill process: first input lift height on electric control box 4.Click rising and press button, electric control box 4 is given an order and is made corresponding control to the power unit of hydraulic system 2, the Electrical heads YV2 of the first solenoid directional control valve 39-3 of hydraulic system power unit, the Electrical heads YV3 of the second solenoid directional control valve 39-6, the Electrical heads YV4 of electromagnetic relief valve 39-5 obtain electric, the first solenoid directional control valve 39-3, the second solenoid directional control valve 39-6, electromagnetic relief valve 39-5 action.Start with rear motor 37, pair vane pump 38 oil suction, the fluid of high-capacity pump oil feed line 41 and low-capacity pump oil feed line 42 is respectively through large discharge mouth 39-9, small flow mouth 39-10 enters valve block assembly 39, the hydraulic oil of large discharge mouth 39-9 enters the 6th oil circuit 39-18 by way of the 5th oil circuit 39-17 through working connection one-way valve 39-7, and then arrive oil-feed port 39-12, the hydraulic oil of small flow mouth 39-10 enters the P mouth of the first solenoid directional control valve 39-3 by way of the first oil circuit 39-13, after the first solenoid directional control valve 39-3, enter the second oil circuit 39-14 from A mouth enter the 3rd oil circuit 39-15 by way of branch road one-way valve 39-2 again and then arrive oil-feed port 39-12, collect with the hydraulic oil of the high-capacity pump 38-1 of pair vane pump 38 and enter oil feed line 44 from oil-feed port 39-12 and then arrive lifting bar hydraulic fluid port 28-1, hydraulic oil arrives second oil pocket 34 by way of the first oil pocket 33 through one-way valve 27-1 by passage 28-2, eventually pass outlet pipe 13 and arrive the 3rd oil pocket 35, the interior level piston rod 12(first order antenna) start to stretch out, after interior level piston rod 12 stretches out completely (two-stage antenna departs from completely), unidirectional blocking structure 27 and one-way valve opening plunger assembly 28 are because the little system pressure that causes of lifting surface area starts to rise, pressure transducer 39-1 sends electric control box 4 to the pressure sensed, along with pressure increase to the parameter pre-set time, the Electrical heads YV2 of the first solenoid directional control valve 39-3 of electric control box 4 hydraulic control system dynamic unit continues electric, the Electrical heads YV3 of the second solenoid directional control valve 39-6, the Electrical heads YV4 dead electricity of electromagnetic relief valve 39-5, second solenoid directional control valve 39-6, electromagnetic relief valve 39-5 action, the hydraulic oil of the high-capacity pump 38-1 output of pair vane pump (38) is all through electromagnetic relief valve 39-5, second solenoid directional control valve 39-6 zero-pressure overflows to return opening 39-11 and gets back to fuel tank 45, the hydraulic oil only having the low-capacity pump 38-2 of pair vane pump 38 to export arrives oil-feed port 39-12, now system proceeds to high-pressure low-flow to lifting bar 1 fuel feeding, secondary piston bar 11(second level antenna) under high oil pressure effect, depart from one-way valve opening plunger assembly 28 fast with one-way sealing structure 27, hydraulic oil enters the 4th oil pocket 32, throw off moment one-way valve 27-1 close and block the 3rd oil pocket 35, simultaneously throw off moment system pressure drop return normal value, pressure transducer 39-1 detects that this changes, the control of program setting made again by electric control box 4, the Electrical heads YV2 of the first solenoid directional control valve 39-3 continues electric, the Electrical heads YV3 of the second solenoid directional control valve 39-6, the Electrical heads YV4 of electromagnetic relief valve 39-5 again electric, second solenoid directional control valve 39-6, electromagnetic relief valve 39-5 action, the hydraulic oil that the high-capacity pump 38-1 of pair vane pump 38 exports arrives oil-feed port 39-12 through working connection one-way valve 39-7 again, the high-capacity pump 38-1 of pair vane pump 38, low-capacity pump 38-2 gives lifting bar 1 fuel feeding together, system proceeds to low pressure and mass flow fuel feeding, first stage piston bar 6 starts quick rising with all the other piston rods, one, secondary antenna relative position is constant, integrally by lifting, after first stage piston bar 6 stretches out completely, middle at different levels (two, three, four, Pyatyi piston rod) stretch out successively from big to small according to diameter of piston rod, last secondary piston bar 11 just starts to stretch out.When lift height reaches preset height, laser distance meter 3 detects this elevation information and feeds back to electric control box 4, the operation of all Electrical heads YV1, YV2, YV3, YV4 dead electricity and disable motor 37 made by electric control box 4, the spool of the first solenoid directional control valve 39-3, the second solenoid directional control valve 39-6, electromagnetic relief valve 39-5 all resets, pair vane pump 38 stops oil suction, and uphill process terminates.Can click stop button in uphill process any time, lifting bar 1 can stop to arbitrary height.Because every one-level inner wall of cylinder of lifting bar 1 is all processed with long keyway 36, every one-level piston rod cylindrical all fixes a feather key 24, feather key 24 is all the time at keyway 36 gliding in tracks, limit the radial rotating of every one-level piston rod, play total travel anti-rotating function, in lifting process, avoid cable winding in shaft.
Stable operation process, the time that Emergency communication vehicle is placed on open air is generally long, and detect antenna height constantly by laser distance meter 3, once lifting bar 1 settling amount exceeds allowed band, electric control box 4 can make instruction, and antenna is risen back original height arranged.When electric control box 4 does not indicate, the power section of hydraulic system 2 is close all the time, plays the effect of saving the energy.Because the anti-rotating function of lifting bar 1, even if there is large wind open air, antenna also can be made to rotate, ensure that the stable, reliable of Antenna Operation.
Decline process, Emergency communication vehicle is finished using to be needed to reclaim antenna.Click decline and press button, electric control box 4 is given an order and is made corresponding control to the power unit of hydraulic system 2, the Electrical heads YV1 of the first solenoid directional control valve 39-3 of hydraulic system power unit obtains electric, first solenoid directional control valve 39-3 action, start with rear motor 37, oil pump 38 oil suction, the output fluid of high-capacity pump is all through electromagnetic relief valve 39-5, second solenoid directional control valve 39-6 zero-pressure overflows to return opening 39-11 and gets back to fuel tank 45, the hydraulic oil of low-capacity pump enters the P mouth of the first solenoid directional control valve 39-3 through the first oil circuit 39-13, enter the X mouth of Pilot operated check valve 39-8 from B mouth after the first solenoid directional control valve 39-3, the Stress control of this road hydraulic oil is relied on to open Pilot operated check valve 39-8, the unnecessary hydraulic oil that the low-capacity pump 38-2 of pair vane pump 38 exports overflows back fuel tank 45 at the first oil circuit 39-13 place through relief valve 39-4, after Pilot operated check valve 39-8 is opened, fluid in lifting bar 1 oppositely enters oil-feed port 39-12 by induced pressure and is back to fuel tank 45 through Pilot operated check valve 39-8, because the hydraulic oil in one-way sealing structure 27 shutoff the 3rd oil pocket 35, so the interior level piston rod 12(first order antenna) cannot first bounce back, but at first secondary piston bar 11 and interior level piston rod 12 integrally one to decline, then be one, two, three, four, Pyatyi piston rod is retracted from small to large successively according to diameter of piston rod, finally when first stage piston bar 6 bounces back close to bonnet 14, when the seal ring 28-5 of one-way valve opening plunger assembly 28 enters one-way sealing structure 27 inner chamber, rate of descent slows down at once, " pocketed oil " that produce in 4th oil pocket 32 is by reverse one-way valve 28-3 inlet passage 28-2 oil sump tank 45, first stage piston bar 6 slowly bounces back, play cushioning effect.First stage piston bar 6 is with secondary piston bar 11(second level antenna) when retracting to the end, one-way valve 27-1 in one-way sealing structure 27 is opened by the thimble 28-4 of one-way valve opening plunger assembly 28, the interior level piston rod 12(first order antenna) just start to retract, simultaneously, because unidirectional blocking structure 27 causes the air in the 3rd oil pocket 35 to remain in above fluid always, when one-way valve 27-1 opens, the air of top is first discharged by outlet pipe 13, plays automatic ventilating function.Until second level antenna be retracted into the end with first order antenna merge be superimposed after, distance detection device 3 sends signal to electric control box 4, the operation of all Electrical heads YV1, YV2, YV3, YV4 dead electricity and disable motor 37 made by electric control box 4, the valve core reset of the first solenoid directional control valve 39-3, pair vane pump 38 stops oil suction, and decline process terminates.Lifting bar 1 can rest on arbitrary height in decline process.In decline process, because total travel anti-rotating function ensure that the communications cable can reclaim smoothly, be priorly that of avoiding first order antenna and second level antenna merging in additive process and fight mutually.
Above embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that the common engineers and technicians in related domain make technological scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.
Claims (4)
1. a novel hydraulic jacking equipment, it comprises hydraulic lifting arm (1), hydraulic system (2), electric control box (4), it is characterized in that being provided with hydraulic lifting arm (1) in hydraulic system (2), hydraulic system (2) is provided with laser distance meter (3), electric control box (4), hydraulic system (2), laser distance meter (3) is all connected with electric control box (4), hydraulic lifting arm (1) comprises cylinder barrel (5), first stage piston bar (6) is provided with in cylinder barrel (5), secondary piston bar (11) is provided with in first stage piston bar (6), interior level piston rod (12) is provided with in secondary piston bar (11), outlet pipe (13) is provided with, between cylinder barrel (5) and first stage piston bar (6) in interior level piston rod (12), between first stage piston bar (6) and secondary piston bar (11), seal assembly is provided with between secondary piston bar (11) and interior level piston rod (12), support ring (25), axle is with positive stop key (23), hole with positive stop key (22), cylinder barrel (5), first stage piston bar (6), the inwall of secondary piston bar (11) is equipped with long keyway (36), first stage piston bar (6), the outer wall of secondary piston bar (11) and interior level piston rod (12) is equipped with feather key (24), feather key (24) is placed in keyway (36), the rear end of the interior first stage piston bar (6) of cylinder barrel (5) is provided with bonnet (14), be provided with one-way valve opening plunger assembly (28) in bonnet (14), one-way valve opening plunger assembly (28) comprises plunger (28-6), hydraulic fluid port (28-1), passage (28-2), reverse one-way valve (28-3), thimble (28-4), is provided with hydraulic fluid port (28-1) in plunger (28-6), passage (28-2), hydraulic fluid port (28-1) and passage (28-2) communicate, and plunger (28-6) is provided with reverse one-way valve (28-3), seal ring (28-5), thimble (28-4), in secondary piston bar (11), one end of interior level piston rod (12) is provided with one-way sealing assembly (27), secondary piston bar (11) the other end connects secondary load dish (30), one-way sealing assembly (27) comprises sealed plunger (27-3), one-way valve (27-1), is provided with one-way valve (27-1) in sealed plunger (27-3), sealed plunger (27-3) connects air vent seat (27-2), and air vent seat (27-2) connects outlet pipe (13).
2. a kind of novel hydraulic jacking equipment according to claim 1, it is characterized in that described hydraulic system (2) comprises fuel tank (2-1), hydraulic system power unit (2-2), hydraulic lifting arm (1) penetrates fuel tank (2-1), hydraulic system power unit (2-2) comprises motor (37), motor (37) connects pair vane pump (38), pair vane pump (38) connects inlet line (40), inlet line (40) connects fuel tank (2-1), the high-capacity pump (38-1) of pair vane pump (38) is by the large discharge mouth (39-9) of high-capacity pump oil feed line (41) connection valve block assembly (39), the low-capacity pump (38-2) of pair vane pump (38) is by the small flow mouth (39-10) of low-capacity pump oil feed line (42) connection valve block assembly (39), the return opening (39-11) of valve block assembly (39) connects return line (43), the oil-feed port (39-12) of valve block assembly (39) connects lifting bar oil feed line (44), return line (43) connects fuel tank (2-1), lifting bar oil feed line (44) connects hydraulic fluid port (28-1), valve block assembly (39) comprises pressure transducer (39-1), branch road one-way valve (39-2), first solenoid directional control valve (39-3), relief valve (39-4), electromagnetic relief valve (39-5), second solenoid directional control valve (39-6), working connection one-way valve (39-7), Pilot operated check valve (39-8), small flow mouth (39-10) is connected by the P mouth of the first oil circuit (39-13) with the first solenoid directional control valve (39-3), the A mouth of the first solenoid directional control valve (39-3) is connected with branch road one-way valve (39-2) by the second oil circuit (39-14), branch road one-way valve (39-2) is communicated with oil-feed port (39-12) by the 3rd oil circuit (39-15), the T mouth of the first solenoid directional control valve (39-3) takes back fuel tank (45), one end of relief valve (39-4) is connected to the first oil circuit (39-13), the other end takes back fuel tank (45), the B mouth of the first solenoid directional control valve (39-3) is connected to the X mouth of Pilot operated check valve (39-8) by the 4th oil circuit (39-16), the B mouth of Pilot operated check valve (39-8) is connected to oil-feed port (39-12), the A mouth of Pilot operated check valve (39-8) takes back fuel tank (45), pressure transducer (39-1) is connected to the second oil circuit (39-14), large discharge mouth (39-9) is connected with working connection one-way valve (39-7) by the 5th oil circuit (39-17), working connection one-way valve (39-7) is communicated with oil-feed port (39-12) by the 6th oil circuit (39-18), one end of electromagnetic relief valve (39-5) is connected on the 5th oil circuit (39-17), the other end connects return opening (39-11), the P mouth of the second solenoid directional control valve (39-6) is communicated with B mouth and is connected to the 5th oil circuit (39-17), the A mouth of the second solenoid directional control valve (39-6) is communicated with T mouth and is connected to return opening (39-11), the Electrical heads YV1 of first solenoid directional control valve (39-3) of the valve block assembly (39) of the power unit of hydraulic system (2), the Electrical heads YV2 of the first solenoid directional control valve (39-3), the Electrical heads YV3 of the second solenoid directional control valve (39-6), the Electrical heads YV4 of electromagnetic relief valve (39-5), pressure transducer (39-1), motor (37) is all connected with electric control box (4).
3. a kind of novel hydraulic jacking equipment according to claim 1, it is characterized in that being provided with at least one-level intergrade piston rod successively between described first stage piston bar (6) and secondary piston bar (11), seal assembly is provided with between intergrade piston rod at different levels, support ring (25), axle is with positive stop key (23), hole is with positive stop key (22), cylinder barrel (5), first stage piston bar (6), intergrade piston rod at different levels, the inwall of secondary piston bar (11) is equipped with long keyway (36), intergrade piston rod at different levels, the outer wall of secondary piston bar (11) and interior level piston rod (12) is equipped with feather key (24), feather key (24) is all the time at keyway (36) gliding in tracks, prevent from relatively rotating between two-stage cylinder barrel, one end of the intergrade piston rod adjacent with secondary piston bar (11) is connected windproof dish (31).
4. a kind of novel hydraulic jacking equipment according to claim 1, it is characterized in that being provided with 4 grades of intergrade piston rods successively between described first stage piston bar (6) and secondary piston bar (11), be respectively second piston rod (7), three grades of piston rods (8), level Four piston rod (9), Pyatyi piston rod (10), second piston rod (7) is provided with in first stage piston bar (6), three grades of piston rods (8) are provided with in second piston rod (7), level Four piston rod (9) is provided with in three grades of piston rods (8), Pyatyi piston rod (10) is provided with in level Four piston rod (9), secondary piston bar (11) is provided with in Pyatyi piston rod (10), secondary seal assembly parts (16) is provided with between first stage piston bar (6) and second piston rod (7), three grades of seal assemblies (17) are provided with between second piston rod (7) and three grades of piston rods (8), level Four seal assembly (18) is provided with between three grades of piston rods (8) and level Four piston rod (9), Pyatyi seal assembly (19) is provided with between level Four piston rod (9) and Pyatyi piston rod (10), secondary seal assembly parts (20) is provided with between Pyatyi piston rod (10) and secondary piston bar (11), between first stage piston bar (6) and second piston rod (7), between second piston rod (7) and three grades of piston rods (8), between three grades of piston rods (8) and level Four piston rod (9), between level Four piston rod (9) and Pyatyi piston rod (10), support ring (25) is equipped with between Pyatyi piston rod (10) and secondary piston bar (11), axle is with positive stop key (23), hole is with positive stop key (22), cylinder barrel (5), first stage piston bar (6), second piston rod (7), three grades of piston rods (8), level Four piston rod (9), Pyatyi piston rod (10), the inwall of secondary piston bar (11) is equipped with long keyway (36), first stage piston bar (6), second piston rod (7), three grades of piston rods (8), level Four piston rod (9), Pyatyi piston rod (10), the outer wall of secondary piston bar (11) and interior level piston rod (12) is equipped with feather key (24), feather key (24) is all the time at keyway (36) gliding in tracks, prevent from relatively rotating between two-stage cylinder barrel, one end of Pyatyi piston rod (10) connects windproof dish (31).
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| CN105133468A (en) * | 2015-09-12 | 2015-12-09 | 张萍 | Road roller with adjustable reflection device |
| CN105771723A (en) * | 2016-05-23 | 2016-07-20 | 沈阳工业大学 | Height adjusting device of impeller of stirring tank |
| CN106640840B (en) * | 2017-01-22 | 2018-03-06 | 重庆市巴山液压附件厂有限公司 | A kind of double-stage double-acting for scout car lifts hydraulic jack |
| CN106837925A (en) * | 2017-03-14 | 2017-06-13 | 华中科技大学 | A kind of multistage pressure cylinder |
| CN109407710A (en) * | 2018-09-29 | 2019-03-01 | 镇江微芯光子科技有限公司 | A kind of control system of lift electromechanical equipment |
| CN111618068B (en) * | 2020-05-19 | 2022-02-11 | 南京信息职业技术学院 | Electric spiral taper rod squeezing oil drain hole equipment for oil tank |
| CN112093703B (en) * | 2020-10-13 | 2021-12-24 | 衡阳市雄焱工具有限公司 | Two-stage hydraulic jack |
| CN112901600B (en) * | 2021-01-26 | 2022-11-29 | 中车青岛四方机车车辆股份有限公司 | Hydraulic execution unit, carriage lifting system and rail vehicle |
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| US3983789A (en) * | 1974-01-28 | 1976-10-05 | Gewerkschaft Eisenhutte Westfalia | Telescopic props |
| CN2903515Y (en) * | 2006-01-25 | 2007-05-23 | 上海金铸机械制造有限公司 | Multi step telescoping hydraulic cylinder |
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Denomination of invention: A new type of hydraulic lifting equipment Effective date of registration: 20220803 Granted publication date: 20151118 Pledgee: Yantai Branch of China Merchants Bank Co.,Ltd. Pledgor: YANTAI FUTURE AUTOMATIC EQUIPMENTS Co.,Ltd. Registration number: Y2022980011902 |
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