CN205012920U - Drill jumbo and levelling mechanism thereof - Google Patents
Drill jumbo and levelling mechanism thereof Download PDFInfo
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- CN205012920U CN205012920U CN201520769214.5U CN201520769214U CN205012920U CN 205012920 U CN205012920 U CN 205012920U CN 201520769214 U CN201520769214 U CN 201520769214U CN 205012920 U CN205012920 U CN 205012920U
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Abstract
The utility model provides a drill jumbo and levelling mechanism thereof. The levelling mechanism includes: platform, one end articulate in the armed lever of platform, articulate in the workstation of the other end of armed lever, both ends articulate respectively in the platform with the armed lever lift pneumatic cylinder, both ends articulate respectively in the workstation with the balanced hydraulic pressure jar of armed lever. Balanced hydraulic pressure jar keep with the same length of pneumatic cylinder lifts so that the gesture of workstation remains unchanged. This kind of levelling mechanism can also remain the gesture (the angle of pitch of workstation) of workstation throughout after the armed lever carries out luffing unchangeable, has just so reduced the time of workstation adjustment gesture. In addition, mechanism structure is simple in this kind of leveling, and the reliability is high.
Description
Technical field
The utility model relates to engineering machinery field, particularly jumbo and levelling gear thereof.
Background technology
The rock drilling propulsive mechanism of existing jumbo and armed lever hinged, by regulating the active length of armed lever, luffing angle and propulsive mechanism relative to the angle of armed lever during rock drilling boring, hammer drill front end drilling tool being navigated to assigned address, realizes fixed-point drill.Usual armed lever is generally designed to two joints according to boring face height and forms with upper arm joint, relative telescopic between arm joint, thus adjustment armed lever length, the pitching of armed lever and propulsive mechanism (workbench) are provided by hydraulic power relative to the pitch control subsystem of armed lever.When armed lever pitching motion, propulsive mechanism (workbench) follows adjustment automatically, keep its relative level, both propulsive mechanism and construction tunnel wall can have been avoided to collide, cause security incident, automatically can keep the opposing parallel degree of porous again, shorten propulsive mechanism pose regulation time, improve efficiency of construction.The levelling principle of current use has following several:
(1) electric liquid levelling control system.General principle is to provide the state that the horizon sensor be arranged on propulsive mechanism (workbench) carrys out perception propulsive mechanism, and produce the corresponding signal of telecommunication, control the action of balance hydraulic cylinder, finally make propulsive mechanism maintenance level, this leveling mode frame for movement is fairly simple, but it is higher to the pressure ball of electrical system and Hydraulic Elements performance, cost is high, unreliable, and leveling is discontinuous, have and rock, interference is produced to boring location.
(2) mechanical linkage levelling control system.Its general principle is by independently connecting rod oil cylinder and turntable, armed lever form parallelogram and two congruent triangles, utilize the parallel principle parallel all the time with congruent triangles congruence parallel edges of parallelogram opposite side, adjustment propulsive mechanism (workbench) keeps level, this leveling mode complicated in mechanical structure, structure precision requires high, hydraulic system element is many, and cost is higher.
Utility model content
Technical problem to be solved in the utility model is that the attitude of workbench holding table when lifting or reduction is to reduce the time of adjustment workbench.
For above-mentioned technical problem, the utility model proposes a kind of levelling gear, it comprises: platform, one end is articulated with the armed lever of platform, be articulated with the workbench of the other end of armed lever, two ends are articulated with the lifting hydraulic cylinder of platform and armed lever respectively, two ends are articulated with the balance hydraulic cylinder of workbench and armed lever respectively, wherein, first fulcrum of armed lever on platform is positioned at above second fulcrum of lifting hydraulic cylinder on platform, balance hydraulic cylinder the 3rd fulcrum is on the table positioned at the top of armed lever the 4th fulcrum on the table, first fulcrum equals the distance of the 3rd fulcrum to the 4th fulcrum to the distance of the second fulcrum, first fulcrum equals the distance of the 4th fulcrum to six fulcrum of balance hydraulic cylinder on armed lever to the distance of the 5th fulcrum of lifting hydraulic cylinder on armed lever, balance hydraulic cylinder can keep the length identical with lifting hydraulic cylinder to remain unchanged to make workbench attitude.
In a specific embodiment, be all horizontally disposed with in the rotating shaft at the first fulcrum, the second fulcrum, the 3rd fulcrum, the 4th fulcrum, the 5th fulcrum and the 6th fulcrum place and be parallel to each other.
In a specific embodiment, the second fulcrum is positioned at immediately below the first fulcrum.
In a specific embodiment, balance hydraulic cylinder and lifting hydraulic cylinder are double acting single-rod piston cylinder.
In a specific embodiment, the piston rod of balance hydraulic cylinder is articulated with workbench, and the cylinder body of balance hydraulic cylinder is articulated with armed lever,
The piston rod of lifting hydraulic cylinder is articulated with armed lever, and the cylinder body of lifting hydraulic cylinder is articulated with platform.
In a specific embodiment, the inner chamber of the cylinder body of lifting hydraulic cylinder is divided near the first lifting chamber of platform and the second lifting chamber away from platform by position piston in the inner, the inner chamber of the cylinder body of balance hydraulic cylinder by position piston be in the inner divided near workbench the first balance chamber and away from workbench and the second balance chamber connected in the second lifting chamber
Levelling gear also comprises hydraulic control system, hydraulic control system comprises the fuel tank for receiving fluids, entrance connects fuel tank and for the actuating unit of pumping liquid, connects the first reversal valve in the outlet of the entrance of fuel tank, actuating unit, the first lifting chamber and the first balance chamber
Wherein, first reversal valve is used for the outlet of the first balance chamber and actuating unit to be connected when the first valve position, the entrance of the first lifting chamber and fuel tank is connected simultaneously, the outlet of the first lifting chamber and actuating unit is connected when the second valve position by the first reversal valve, is connected by the entrance of the first balance chamber and fuel tank simultaneously.
In a specific embodiment, the pipeline that first balance chamber and the first lifting chamber connect with the first reversal valve respectively arranges bidirectional hydraulic lock, bidirectional hydraulic lock is used at actuating unit not to keeping the state of balance hydraulic cylinder and lifting hydraulic cylinder constant in any one in the first balance chamber and the first lifting chamber during infusion fluid
First reversal valve is also provided with the 3rd valve position, and the outlet of the first reversal valve actuating unit when the 3rd valve position is not connected with any one in the first balance chamber and the first lifting chamber.
In a specific embodiment, hydraulic control system also comprises the first valve on the pipeline that is arranged between the second balance chamber and the second lifting chamber and is arranged on the second valve on the pipeline between the second balance chamber and the first reversal valve,
Wherein, one in the first valve and the second valve when closing, another is opened.
In a specific embodiment, first valve is that single control often opens pilot operated valve device, second valve is the normally closed pilot operated valve device of single control, hydraulic control system also comprises control unit, inputs or stop the 7th valve of input control hydraulic pressure simultaneously while that control unit comprising for controlling to the first valve and the second valve.
In a specific embodiment, first reversal valve is three pilot operated directional control valves, control unit also comprises the 3rd valve, is communicated in the second reversal valve of the 3rd valve and the first reversal valve, is communicated in the 3rd reversal valve of the 3rd valve and the first reversal valve, is communicated in the 5th valve of the second reversal valve and is communicated in the 6th valve of the 3rd reversal valve
Second reversal valve is two single control pilot operated directional control valves, one that switches in the first valve position and the second valve position for driving the first reversal valve,
3rd reversal valve is two single control pilot operated directional control valves, switch in the first valve position and the second valve position for driving the first reversal valve another,
The valve position that 3rd valve is used for changing the second reversal valve and the 3rd reversal valve simultaneously with make the first reversal valve the valve position that is urged to by the second reversal valve and the first reversal valve the valve position that is urged to by the 3rd reversal valve exchange mutually,
5th valve only can be provided for the hydraulic control hydraulic pressure of driving first reversal valve commutation to the second reversal valve when opening, 6th valve only can be provided for the hydraulic control hydraulic pressure of driving first reversal valve commutation to the 3rd reversal valve when opening, the 5th valve and the 6th valve only can open one at synchronization.
In a specific embodiment, the 7th valve is the single control pilot operated valve device being connected to the 3rd valve, and the 3rd valve turns the on off state of the 7th valve while the valve position of change second reversal valve and the 3rd reversal valve.
In a specific embodiment, the 5th valve and the 6th valve are normally closed type reducing valve, and control unit is also included in synchronization the handle of only can opened in the 5th valve and the 6th valve.
In a specific embodiment, the 3rd valve is button valve.
In a specific embodiment, workbench is arranged to level in an initial condition.
The utility model also proposed a kind of jumbo, and this jumbo comprises levelling gear as above.
Because balance hydraulic cylinder keeps the length identical with lifting hydraulic cylinder, the distance between the second fulcrum and the 5th fulcrum equals the distance between the 3rd fulcrum and the 6th fulcrum.Again due to the distance that the distance between the first fulcrum and the second fulcrum equals the distance between the 3rd fulcrum and the 4th fulcrum, the distance between the first fulcrum and the 5th fulcrum equals between the 4th fulcrum and the 6th fulcrum, the triangle being summit with the first fulcrum, the second fulcrum, the 5th fulcrum is congruent all the time with the triangle being summit with the 3rd fulcrum, the 4th fulcrum, the 6th fulcrum.Can also remain after armed lever carries out elevating movement thus that the attitude (angle of pitch of workbench) of workbench is constant, which reduces the time of workbench adjustment attitude.In addition, this levelling gear structure is simple, and reliability is high.
Accompanying drawing explanation
Also will be described in more detail the utility model with reference to accompanying drawing based on embodiment hereinafter.Wherein:
Fig. 1 shows a kind of levelling gear in a kind of embodiment of the present utility model.
Fig. 2 shows the hydraulic control system of the levelling gear in Fig. 1.
In the accompanying drawings, identical parts use identical Reference numeral.Accompanying drawing is not according to the scale of reality.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 shows the levelling gear 1 of a kind of embodiment of the present utility model.This levelling gear 1 is mainly used in engineering machinery, and when lifting or reduction workbench 60, the attitude of holding table 60 is constant to reduce the time that workbench 60 adjusts.This levelling gear 1 is particularly useful for the drill arm mechanism as jumbo, below be just described in detail for jumbo.
Jumbo comprises walking mechanism and levelling gear 1.Walking mechanism comprises car body and wheel.Wheel lifting plays car body, and wheel band motor vehicles bodies is walked.Levelling gear 1 is arranged on car body.Levelling gear 1 comprises platform 20.Platform 20 can be arranged on the front of car body.Cyclotron mechanism can be passed through between platform 20 and car body.This cyclotron mechanism can be hinged on car body and the vertical mount pad of rotating shaft.Mount pad rotational band moving platform 20 is along vertical axis of rotation.Platform 20, as the pedestal of levelling gear 1, can drive levelling gear 1 to swing when platform 20 rotates.
Levelling gear 1 also comprises armed lever 30 and workbench 60.Armed lever 30 is in direct rod shape roughly.One end of armed lever 30 is articulated with platform 20, and the other end of armed lever 30 is articulated with workbench 60.Particularly, the two ends of armed lever 30 are provided with hinged seat, and platform 20 and workbench 60 also equal correspondence are provided with hinged seat.Hinged seat on the hinged seat of armed lever 30 one end and platform 20 interconnects by running through the bearing pin of both.Hinged seat on the hinged seat of armed lever 30 other end and workbench 60 interconnects by running through the bearing pin of both.These two bearing pins are all horizontally disposed with and are parallel to each other, and such armed lever 30 is level relative to the rotating shaft of the rotation of platform 20 and workbench 60 and is parallel to each other.In this jumbo, workbench 60 can be the propelling bearing for installing hammer drill.Such as, workbench 60 is provided with propulsive mechanism, hammer drill is arranged on propulsive mechanism, and propulsive mechanism can drive advance or the retrogressing of hammer drill.Preferably, armed lever 30 is saved by the many arms connected successively and forms.Arm joint is in tubular.Adjacent arms joint is set in together, and the energy-conservation bearing of trend along armed lever 30 of adjacent arms extends.Be provided with telescoping mechanism in adjacent arms joint, telescoping mechanism can be the double acting hydraulic cylinder that two ends are connected to this arms joint, and telescoping mechanism drives adjacent arms joint relatively to stretch out or retraction, elongates or shortens to make armed lever 30.
Levelling gear 1 also comprises lifting hydraulic cylinder 40.Lifting hydraulic cylinder 40 is positioned at the below of armed lever 30.Lifting hydraulic cylinder 40 is double acting hydraulic cylinders.In the present embodiment, lifting hydraulic cylinder 40 is single lever-type piston rod.The two ends of lifting hydraulic cylinder 40 are articulated with armed lever 30 and platform 20 respectively.The outward extending end of piston rod of lifting hydraulic cylinder 40 is articulated with armed lever 30, and the end that the cylinder body of lifting hydraulic cylinder 40 deviates from piston rod is articulated with platform 20.The rotating shaft that lifting hydraulic cylinder 40 rotates relative to armed lever 30 and platform 20 is all horizontally disposed with and the shaft parallel all rotated relative to platform 20 with armed lever 30.Lifting hydraulic cylinder 40 support arm 30, lifting hydraulic cylinder 40 can drive armed lever 30 to rotate relative to platform 20.
Levelling gear 1 also comprises balance hydraulic cylinder 50.Balance hydraulic cylinder 50 is positioned at the top of armed lever 30.Balance hydraulic cylinder 50 is double acting hydraulic cylinders.In the present embodiment, balance hydraulic cylinder 50 is single lever-type piston rod.The two ends of balance hydraulic cylinder 50 are articulated with workbench 60 and armed lever 30 respectively.The outward extending end of piston rod of balance hydraulic cylinder 50 is articulated with workbench 60.The end that the cylinder body of balance hydraulic cylinder 50 deviates from piston rod is articulated with armed lever 30.The rotating shaft that balance hydraulic cylinder 50 rotates relative to armed lever 30 and workbench 60 is all horizontally disposed with and the shaft parallel all rotated relative to platform 20 with armed lever 30.Balance hydraulic cylinder 50 holds workbench 60, and balance hydraulic cylinder 50 can drive workbench 60 to rotate relative to armed lever 30.
The fulcrum of armed lever 30 on platform 20 is the first fulcrum 21; The fulcrum of lifting hydraulic cylinder 40 on platform 20 is the second fulcrum 22; The fulcrum of balance hydraulic cylinder 50 on workbench 60 is the 3rd fulcrum 62; The fulcrum of armed lever 30 on platform 20 is the 4th fulcrum 61; The fulcrum of lifting hydraulic cylinder 40 on armed lever 30 is the 5th fulcrum 31; The fulcrum of balance hydraulic cylinder 50 on armed lever 30 is the 6th fulcrum 32.First fulcrum 21 is above the second fulcrum 22.3rd fulcrum 62 is above the 4th fulcrum 61.Distance between first fulcrum 21 and the second fulcrum 22 equals the distance between the 3rd fulcrum 62 and the 4th fulcrum 61.Distance between first fulcrum 21 and the 5th fulcrum 31 equals the distance between the 4th fulcrum 61 and the 6th fulcrum 32.Preferably, balance hydraulic cylinder 50 is identical hydraulic cylinder with lifting hydraulic cylinder 40.Preferably, armed lever 30, lifting hydraulic cylinder 40, balance hydraulic cylinder 50 are positioned at or are similar to and be positioned at same perpendicular, and the rotating shaft of armed lever 30, lifting hydraulic cylinder 40, balance hydraulic cylinder 50 is all perpendicular to this perpendicular.
Levelling gear 1 also comprises hydraulic control system 2.Hydraulic control system 2 is flexible to raise or to reduce workbench 60 for controlling lifting hydraulic cylinder 40.Hydraulic control system 2 controls lifting hydraulic cylinder 40 when stretching out, and armed lever 30 upwards rotates, and workbench 60 raises.When hydraulic control system 2 controls lifting hydraulic cylinder 40 retraction, armed lever 30 rotates, and workbench 60 reduces.Also for controlling balance hydraulic cylinder 50 length, to equal the length of lifting hydraulic cylinder 40 constant with the attitude of holding table 60 for hydraulic control system 2.When the length of balance hydraulic cylinder 50 equals the length of elevating ram, distance between second fulcrum 22 and the 5th fulcrum 31 equals the distance between the 3rd fulcrum 62 and the 6th fulcrum 32, again because the distance between the first fulcrum 21 and the second fulcrum 22 equals the distance between the 3rd fulcrum 62 and the 4th fulcrum 61, distance between first fulcrum 21 and the 5th fulcrum 31 equals the distance between the 4th fulcrum 61 and the 6th fulcrum 32, with the first fulcrum 21, second fulcrum 22, 5th fulcrum 31 be summit triangle with the 3rd fulcrum 62, 4th fulcrum 61, 6th fulcrum 32 is that the triangle on summit is congruent all the time.When armed lever 30 carries out elevating movement, the attitude (luffing angle of workbench 60) of energy holding table 60 is constant all the time thus.When workbench 60 be initially set to level time, can also level be remained after armed lever 30 carries out elevating movement.
Fig. 2 shows the structure of the hydraulic control system 2 in the present embodiment.Hydraulic control system 2 comprises fuel tank, actuating unit 70, first reversal valve 71 and control unit.Fuel tank is used for receiving fluids.The entrance in actuating unit 70 is connected in the outlet of fuel tank.The outlet of actuating unit 70 is connected in the first reversal valve 71.Actuating unit 70 can be hydraulic pump, is preferably volume pump.Actuating unit 70 is mainly used in the liquid pressing pumping in fuel tank to the first reversal valve 71.The inner chamber of the cylinder body of lifting hydraulic cylinder 40 is divided into two chambers by position piston in the inner, namely near the first lifting chamber 41 of platform 20 and the second lifting chamber 42 away from platform 20.The inner chamber of the cylinder body of balance hydraulic cylinder 50 is divided into two chambers by position piston in the inner, namely near the first balance chamber 51 of workbench 60 and the second balance chamber 52 away from workbench 60.In the present embodiment, the first lifting chamber 41 and the second balance chamber 52 are rodless cavity, and the first balance chamber 51 and the second lifting chamber 42 are rod chamber.Second lifting chamber 42 by pipeline connection in the second balance chamber 52.First reversal valve 71 is also connected in the entrance of fuel tank, the first lifting chamber 41 and the first balance chamber 51 respectively by different pipelines.First balance chamber 51 is connected with the outlet of actuating unit 70 when the first valve position by the first reversal valve 71, is connected by the first lifting chamber 41 with the entrance of fuel tank simultaneously.First lifting chamber 41 is connected with the outlet of actuating unit 70 when the second valve position by the first reversal valve 71, the first balance chamber 51 is connected with the entrance of fuel tank simultaneously.Control unit switches for the valve position controlling the first reversal valve 71.
When the first reversal valve 71 is positioned at the first valve position, actuating unit 70 makes balance hydraulic cylinder 50 shorten to pumping liquid in the first balance chamber 51, liquid simultaneously in the second balance chamber 52 flow in the second lifting chamber 42 and lifting hydraulic cylinder 40 is shortened, and the liquid in the first lifting chamber 41 flow in fuel tank.The length of balance hydraulic cylinder 50 and lifting hydraulic cylinder 40 is close all the time, so just achieves the attitude of balance hydraulic cylinder 50 holding table 60 while lifting hydraulic cylinder 40 drives armed lever 30 to rotate substantially constant.
When the first reversal valve 71 is positioned at the second valve position, actuating unit 70 makes lifting hydraulic cylinder 40 extend to pumping liquid in the first lifting chamber 41, liquid simultaneously in the second lifting chamber 42 flow in the second balance chamber 52 and balance hydraulic cylinder 50 is extended, and the liquid in the first balance chamber 51 flow in fuel tank.The length of balance hydraulic cylinder 50 and lifting hydraulic cylinder 40 is close all the time, so just achieves the attitude of balance hydraulic cylinder 50 holding table 60 while lifting hydraulic cylinder 40 drives armed lever 30 upwards to rotate substantially constant.
Preferably, pipeline between the first balance chamber 51, first lifting chamber 41 and the first reversal valve 71 arranges bidirectional hydraulic lock 72, bidirectional hydraulic lock 72 at actuating unit 70 not to keeping the state of balance hydraulic cylinder 50 and lifting hydraulic cylinder 40 constant in any one in the first balance chamber 51 and the first lifting chamber 41 during infusion fluid.In the present embodiment, bidirectional hydraulic lock 72 comprises the hydraulic control one-way valve on the pipeline on two pipelines being separately positioned between the first reversal valve 71 and the first balance chamber 51 and between the first reversal valve 71 and the first lifting chamber 41, and two hydraulic control one-way valves are all only often opened to the outflow direction of the first reversal valve 71.The pressure be controlled by between another hydraulic control one-way valve and the first reversal valve 71 of a hydraulic control one-way valve in two hydraulic control one-way valves.When this pressure is greater than the opening pressure of hydraulic control one-way valve, hydraulic control one-way valve is opened.First reversal valve 71 is also provided with the 3rd valve position, and the outlet of actuating unit 70 and the entrance of fuel tank are connected in the 3rd valve position by the first reversal valve 71.When the first reversal valve 71 is in the 3rd valve position, the path of balance hydraulic cylinder 50 and lifting hydraulic cylinder 40 is by bidirectional hydraulic lock 72 locking, and workbench 60 energy held stationary, is conducive to the accurate location drilling of hammer drill.Meanwhile, formed between actuating unit 70 and fuel tank and circulate, avoid hydraulic control system 2 superpressure.
Preferably, hydraulic control system 2 also comprises transfer valve group.Transfer valve group is used for the first reversal valve 71 to switch to the flexible of the flexible or independent control balance hydraulic cylinder 50 simultaneously controlling balance hydraulic cylinder 50 and lifting hydraulic cylinder 40.Transfer valve group comprises the first valve 73 on the pipeline that is arranged between the second balance chamber 52 and the second lifting chamber 42 and is arranged on the second valve 74 on the pipeline between the second balance chamber 52 and the first reversal valve 71.Close the second valve 74, open the first valve 73, first reversal valve 71 simultaneously and can control balance hydraulic cylinder 50 and lifting hydraulic cylinder 40 extends or retraction simultaneously.Close the first valve 73, open the second valve 74, first reversal valve 71 simultaneously and only can control balance hydraulic cylinder 50 and can stretch out or retraction, lifting hydraulic cylinder 40 remains unchanged.Such convenience finely tunes to balance hydraulic cylinder 50 attitude adjusting separately workbench 60 separately to the first reversal valve 71.Such as upward or after rotated down, only need the length of finely tuning balance hydraulic cylinder 50 at armed lever 30, balance hydraulic cylinder 50 is consistent with the length of lifting hydraulic cylinder 40, and then attitude before armed lever 30 is rotated and after rotation is consistent.Also such as, the length of balance hydraulic cylinder 50 can only be adjusted to make workbench 60 level.
Preferably, the first valve 73 is single control two-bit triplet pilot operated directional control valve.Second balance chamber 52 and the second lifting chamber 42 are connected when normal position by the first valve 73.First valve 73 cuts off the connecting line between the second balance chamber 52 and the second lifting chamber 42 when another valve position.
More preferably, the first one-way balance valve 85 is set between bidirectional hydraulic lock 72 and the first balance chamber 51 and/or the second one-way balance valve 75 is set between bidirectional hydraulic lock 72 and the first lifting chamber 41.First one-way balance valve 85, for limiting the flow velocity of the liquid of outflow first balance chamber 51, makes stretching out of balance hydraulic cylinder 50 more steady.Second one-way balance valve 75, for limiting the flow velocity of the liquid of outflow first lifting chamber 41, makes the retraction of balance hydraulic cylinder 50 and lifting hydraulic cylinder 40 more steady.
More preferably, the first reversal valve 71 is pilot operated directional control valve.Control unit also comprises the 3rd valve 76, pilot control block and pilot valves.3rd valve 76 is preferably button valve.Pilot control block comprises the second reversal valve 79 and the 3rd reversal valve 80.
Second reversal valve 79 and the 3rd reversal valve 80 are two single control pilot operated directional control valves.Two hydraulic control interfaces in the first reversal valve 71 all connected by second reversal valve 79 and the 3rd reversal valve 80.Second reversal valve 79 is for being connected in two hydraulic control interfaces of the outlet of actuating unit 70 and the first reversal valve 71, and the 3rd reversal valve 80 is for being connected another in two hydraulic control interfaces of the outlet of actuating unit 70 and the first reversal valve 71.Second reversal valve 79 injects hydraulic control hydraulic energy in two hydraulic control interfaces of the first reversal valve 71 makes the first reversal valve 71 be switched to the first valve position and the second valve position one.3rd reversal valve 80 injects hydraulic control hydraulic energy in another in two hydraulic control interfaces of the first reversal valve 71 makes the first reversal valve 71 be switched to another of the first valve position and the second valve position.The hydraulic pressure that the outlet that hydraulic control hydraulic pressure all derives from actuating unit 70 exports.
Pilot valves comprises the 5th valve 81, the 6th valve 82, pedestal and handle 83.5th valve 81 and the 6th valve 82 to be installed on pedestal and to be single control normally closed type valve.One end ball-joint of handle 83 is on pedestal.5th valve 81 and the 6th valve 82 are preferably reducing valve.Handle 83 can open the 5th valve 81 to the 5th valve 81 deflection, and handle 83 can open the 6th valve 82 to the 6th valve 82 deflection, and such handle 83 is opened for selecting one in the 5th valve 81 and the 6th valve 82.
5th valve 81 is arranged on the pipeline between the outlet of actuating unit 70 and the second reversal valve 79.When the 5th valve 81 is opened, hydraulic control hydraulic pressure could be transported to the second reversal valve 79 from the outlet of actuating unit 70, and then is transported to the first reversal valve 71.
6th valve 82 is arranged on the pipeline between the outlet of actuating unit 70 and the 3rd reversal valve 80.When the 6th valve 82 is opened, hydraulic control hydraulic pressure could be transported to the 3rd reversal valve 80 from the outlet of actuating unit 70, and then is transported to the first reversal valve 71.
3rd valve 76 connects the hydraulic control interface of outlet in actuating unit 70 and the second reversal valve 79 and the 3rd reversal valve 80.3rd valve 76 switches to make the second reversal valve 79 for the pipeline between the hydraulic control interface that is switched on or switched off the second reversal valve 79 and the outlet of actuating unit 70 in two valve position, and the pipeline be also simultaneously switched on or switched off between the hydraulic control interface of the 3rd reversal valve 80 and the outlet of actuating unit 70 switches in two valve position to make the 3rd reversal valve 80.Like this, the 3rd valve 76 valve position 80 that simultaneously can change the second reversal valve 79 and the 3rd reversal valve with make the first reversal valve 71 valve position that is urged to by the second reversal valve 79 and the first reversal valve 71 valve position that is urged to by the 3rd reversal valve 80 exchange mutually.
When 5th valve 81 and the 6th valve 82 all disconnect, the first reversal valve 71 is in the 3rd valve position (i.e. meta), bidirectional hydraulic lock 72 locking, and lifting hydraulic cylinder 40 and balance hydraulic cylinder 50 are all failure to actuate.
Swinging handle 83, opens the 5th valve 81, and the 3rd valve 76 is closed, and the first valve 73 is opened, and when the second valve 74 is closed, lifting hydraulic cylinder 40 shortens, and balance hydraulic cylinder 50 shortens.Swinging handle 83, opens the 6th valve 82, and the 3rd valve 76 is closed, and the first valve 73 is opened, and when the second valve 74 is closed, lifting hydraulic cylinder 40 extends, and balance hydraulic cylinder 50 extends.
Swinging handle 83, opens the 5th valve 81, and the 3rd valve 76 is opened, and the first valve 73 is closed, and when the second valve 74 is opened, lifting hydraulic cylinder 40 is failure to actuate, and balance hydraulic cylinder 50 extends.Swinging handle 83, opens the 6th valve 82, and the 3rd valve 76 is opened, and the first valve 73 is closed, and when the second valve 74 is opened, lifting hydraulic cylinder 40 is failure to actuate, and balance hydraulic cylinder 50 shortens.
Handle 83 controls the direction of lifting hydraulic cylinder 40 and balance hydraulic cylinder 50 whether action and action.First valve 73 and the second valve 74 are for controlling lifting hydraulic cylinder 40 and balance hydraulic cylinder 50 action simultaneously or only balance hydraulic cylinder 50 single movement.3rd valve 76 is for controlling the commutation of lifting hydraulic cylinder 40 and balance hydraulic cylinder 50.Thereby simplify the operation of hydraulic control system 2.
More preferably, control unit also comprises the 7th valve 77.7th valve 77 is single control pilot operated valve device, is preferably two single control pilot operated directional control valves.7th valve 77 is communicated in outlet, the 3rd valve 76, first valve 73 and second valve 74 of actuating unit 70.First valve 73 often opens pilot operated valve device for single control, and the second valve 74 is the normally closed pilot operated valve device of single control.7th valve 77 for the pipeline between the outlet of the pipeline that disconnects or connect between the outlet of actuating unit 70 and the hydraulic control interface of the first valve 73 and actuating unit 70 and the hydraulic control interface of the second valve 74 simultaneously, with simultaneously to the first valve 73 with the second valve 74 inputs or stop input control hydraulic pressure simultaneously.7th valve 77 is controlled by and injects hydraulic control hydraulic pressure to the 7th valve 77 when the 3rd valve the 76, three valve 76 is opened and commutate to drive the 7th valve 77.Like this, switch the 3rd valve 76 is closed the second valve 74 and is closed the first valve 73 while opening the second valve 74 while can also realizing opening the first valve 73.Further simplify operation.
More preferably, the second valve 74 comprises the hydraulic control one-way valves of two serial connections, and the Chang Kaifang of these two hydraulic control one-way valves on the contrary, and is controlled by the 7th valve 77 simultaneously.These two hydraulic control one-way valves block the pipeline between the second balance chamber 52 and the first reversal valve 71 when not receiving the hydraulic pressure from the 7th valve 77, these two hydraulic control one-way valves connect the pipeline between the second balance chamber 52 and the first reversal valve 71 when receiving the hydraulic pressure from the 3rd valve 76.
More preferably, governor valve 84 is set in the exit of actuating unit 70, to avoid hydraulic control system 2 superpressure.
More preferably, reducing valve 78 is set between the outlet and control unit of actuating unit 70, the operating pressure of the valve in control unit is reduced, safer when using these valves to control hydraulic control system 2.
Although be described the utility model with reference to preferred embodiment, when not departing from scope of the present utility model, various improvement can be carried out to it and parts wherein can be replaced with equivalent.Especially, only otherwise there is structural hazard, the every technical characteristic mentioned in each embodiment all can combine in any way.The utility model is not limited to specific embodiment disclosed in literary composition, but comprises all technical schemes fallen in the scope of claim.
Claims (15)
1. a levelling gear, it is characterized in that, comprise: the lifting hydraulic cylinder that platform, one end are articulated with the armed lever of described platform, the workbench being articulated with the other end of described armed lever, two ends are articulated with described platform and described armed lever respectively, two ends are articulated with the balance hydraulic cylinder of described workbench and described armed lever respectively
Wherein, described armed lever the first fulcrum is on the platform positioned at the top of described lifting hydraulic cylinder the second fulcrum on the platform, three fulcrum of described balance hydraulic cylinder on described workbench is positioned at above the 4th fulcrum of described armed lever on described workbench, described first fulcrum equals the distance of described 3rd fulcrum to described 4th fulcrum to the distance of described second fulcrum, described first fulcrum equals the distance of described 4th fulcrum to six fulcrum of described balance hydraulic cylinder on described armed lever to the distance of the 5th fulcrum of described lifting hydraulic cylinder on described armed lever,
Described balance hydraulic cylinder keeps the length identical with described lifting hydraulic cylinder to remain unchanged to make the attitude of described workbench.
2. levelling gear according to claim 1, is characterized in that, is all horizontally disposed with in the rotating shaft at described first fulcrum, described second fulcrum, described 3rd fulcrum, described 4th fulcrum, described 5th fulcrum and described 6th fulcrum place and is parallel to each other.
3. levelling gear according to claim 1, is characterized in that, described second fulcrum is positioned at immediately below described first fulcrum.
4. levelling gear according to claim 1, is characterized in that, described balance hydraulic cylinder and described lifting hydraulic cylinder are double acting single-rod piston cylinder.
5. levelling gear according to claim 4, is characterized in that, the piston rod of described balance hydraulic cylinder is articulated with described workbench, and the cylinder body of described balance hydraulic cylinder is articulated with described armed lever,
The piston rod of described lifting hydraulic cylinder is articulated with described armed lever, and the cylinder body of described lifting hydraulic cylinder is articulated with described platform.
6. levelling gear according to any one of claim 1 to 5, it is characterized in that, the inner chamber of the cylinder body of lifting hydraulic cylinder is divided near the first lifting chamber of platform and the second lifting chamber away from platform by position piston in the inner, the inner chamber of the cylinder body of described balance hydraulic cylinder by position piston be in the inner divided near described workbench the first balance chamber and away from described workbench and the second balance chamber connected in described second lifting chamber
Described levelling gear also comprises hydraulic control system, described hydraulic control system comprises the fuel tank for receiving fluids, entrance connects described fuel tank and for the actuating unit of liquid described in pumping, connect the first reversal valve in the outlet of the entrance of described fuel tank, described actuating unit, the first lifting chamber and the first balance chamber
Wherein, described first reversal valve is used for the outlet of the first balance chamber and actuating unit to be connected when the first valve position, the entrance of the first lifting chamber and fuel tank is connected simultaneously, the outlet of the first lifting chamber and actuating unit is connected when the second valve position by described first reversal valve, is connected by the entrance of the first balance chamber and fuel tank simultaneously.
7. levelling gear according to claim 6, it is characterized in that, the described pipeline connected with the first reversal valve respectively in the first balance chamber and the first lifting chamber arranges bidirectional hydraulic lock, described bidirectional hydraulic lock is used at actuating unit not to keeping the state of balance hydraulic cylinder and lifting hydraulic cylinder constant in any one in described first balance chamber and described first lifting chamber during infusion fluid
Described first reversal valve is also provided with the 3rd valve position, and the outlet of described first reversal valve described actuating unit when described 3rd valve position is not connected with any one in described first balance chamber and described first lifting chamber.
8. levelling gear according to claim 7, it is characterized in that, described hydraulic control system also comprises the first valve on the pipeline that is arranged between described second balance chamber and described second lifting chamber and is arranged on the second valve on the pipeline between described second balance chamber and described first reversal valve
Wherein, one in described first valve and described second valve when closing, another is opened.
9. levelling gear according to claim 8, it is characterized in that, described first valve is that single control often opens pilot operated valve device, second valve is the normally closed pilot operated valve device of single control, described hydraulic control system also comprises control unit, inputs or stops the 7th valve of input control hydraulic pressure simultaneously while that described control unit comprising for controlling to described first valve and described second valve.
10. levelling gear according to claim 9, it is characterized in that, described first reversal valve is three pilot operated directional control valves, described control unit also comprises the 3rd valve, is communicated in the second reversal valve of described 3rd valve and described first reversal valve, is communicated in the 3rd reversal valve of described 3rd valve and described first reversal valve, is communicated in the 5th valve of described second reversal valve and is communicated in the 6th valve of described 3rd reversal valve
Described second reversal valve is two single control pilot operated directional control valves, one that switches in described first valve position and described second valve position for driving described first reversal valve,
Described 3rd reversal valve is two single control pilot operated directional control valves, switch in described first valve position and described second valve position for driving described first reversal valve another,
The valve position that described 3rd valve is used for changing described second reversal valve and described 3rd reversal valve simultaneously with make described first reversal valve the valve position that is urged to by described second reversal valve and described first reversal valve the valve position that is urged to by described 3rd reversal valve exchange mutually
Described 5th valve only open the second reversal valve described in Shi Nengxiang be provided for driving first reversal valve commutation hydraulic control hydraulic pressure, described 6th valve only open the 3rd reversal valve described in Shi Nengxiang be provided for driving first reversal valve commutation hydraulic control hydraulic pressure, described 5th valve and described 6th valve only can open one at synchronization.
11. levelling gears according to claim 10, it is characterized in that, described 7th valve is the single control pilot operated valve device being connected to described 3rd valve, and described 3rd valve turns the on off state of the 7th valve while the valve position changing described second reversal valve and the 3rd reversal valve.
12. levelling gears according to claim 10, it is characterized in that, described 5th valve and described 6th valve are normally closed type reducing valve, and described control unit is also included in synchronization the handle of only can opened in described 5th valve and described 6th valve.
13. levelling gears according to claim 10, is characterized in that, described 3rd valve is button valve.
14. levelling gears according to any one of claim 1 to 5, is characterized in that, described workbench is arranged to level in an initial condition.
15. 1 kinds of jumboes, is characterized in that, described jumbo comprises levelling gear according to any one of claim 1 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520769214.5U CN205012920U (en) | 2015-09-30 | 2015-09-30 | Drill jumbo and levelling mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520769214.5U CN205012920U (en) | 2015-09-30 | 2015-09-30 | Drill jumbo and levelling mechanism thereof |
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| Publication Number | Publication Date |
|---|---|
| CN205012920U true CN205012920U (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520769214.5U Withdrawn - After Issue CN205012920U (en) | 2015-09-30 | 2015-09-30 | Drill jumbo and levelling mechanism thereof |
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| Country | Link |
|---|---|
| CN (1) | CN205012920U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221070A (en) * | 2015-09-30 | 2016-01-06 | 中国铁建重工集团有限公司 | Jumbo and levelling gear thereof |
-
2015
- 2015-09-30 CN CN201520769214.5U patent/CN205012920U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221070A (en) * | 2015-09-30 | 2016-01-06 | 中国铁建重工集团有限公司 | Jumbo and levelling gear thereof |
| CN105221070B (en) * | 2015-09-30 | 2018-02-06 | 中国铁建重工集团有限公司 | Drill jumbo and its levelling gear |
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| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Andersen Peter Inventor after: Liu Feixiang Inventor after: Cheng Yongliang Inventor after: Zheng Daqiao Inventor after: Liu Zaizheng Inventor after: Ma Chengbiao Inventor after: He Erchun Inventor before: Liu Feixiang Inventor before: Cheng Yongliang Inventor before: Zheng Daqiao Inventor before: Liu Zaizheng Inventor before: Ma Chengbiao Inventor before: He Erchun |
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| COR | Change of bibliographic data | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160203 Effective date of abandoning: 20180206 |