CN205956325U - Automatic tensioning controlling means of rotary drilling machine pressurization chain - Google Patents
Automatic tensioning controlling means of rotary drilling machine pressurization chain Download PDFInfo
- Publication number
- CN205956325U CN205956325U CN201620870926.0U CN201620870926U CN205956325U CN 205956325 U CN205956325 U CN 205956325U CN 201620870926 U CN201620870926 U CN 201620870926U CN 205956325 U CN205956325 U CN 205956325U
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- oil
- oil cylinder
- equilibrium
- oil circuit
- cylinder
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Abstract
The utility model discloses an automatic tensioning controlling means of rotary drilling machine pressurization chain, it includes balanced hydro -cylinder, oil pump and connection are in magenetic exchange valve on the oil circuit between balanced hydro -cylinder and the oil pump, the oil circuit include with the big chamber of balanced hydro -cylinder of balanced hydro -cylinder be connected first oil circuit and with the second oil circuit is connected to the balanced hydro -cylinder loculus of balanced hydro -cylinder, be provided with the pressure sensor who is linked together with balanced hydro -cylinder big chamber on the first oil circuit, communication connection between pressure sensor and the rotary drilling machine PLC control cabinet. Utilize the device full -automatic realization to control the tensioning degree of pressurization chain, make it be in suitable tensioning within range all the time, and need not manual operation.
Description
Technical field
This utility model belongs to mining equipment technical field, specifically refers to a kind of pressurizing chain of bit hole rig auto-tensioning
Control device.
Background technology
Rotary drill is a kind of opencast mining equipment；It has, and piercing efficiency is high, the big feature of drilling and blasting side's amount, big in being
The preferred unit of type surface mine exploitation.Its operation principle is the extruding of rotation by drilling rod and tricone bit, grinding
Form drilling and blasting hole in the mining area scope of operation.The pressurization drilling of rotary drill has various ways：Rack-and-pinion pressurization, oil cylinder+steel wire rope
Pressurization, oil cylinder+chain pressurized or the pressurization of independent closed chain；The domestic rotary drill overwhelming majority uses closed chain at present
Pressurization.Closed chain pattern of pressure passes through the gear shaft assembly in motor or fluid motor-driven main machine frame, and gear assembly drives
Pressurizing chain so drive rotary machinery move up and down realize rifler pressurization drilling；And drill bit is subject in the drilling process that pressurizes
The impulsive force of different hardness Ore eventually passes back in whole equipment along drilling rod；Therefore pressurizing chain drilling work in not only
Bear the tension force being drilled down into and also can bear the reaction punch power from different rock-layers hardness Ore.In order to ensure pressurization brill
Enter the normal operation of work, pressurizing chain will remain at one reasonably in elastic scope, too loose, is susceptible to chain
" jump chain " (chain non-engagement state crosses over the gear teeth) phenomenon, tightly can make chain " earning disconnected " very much again.
In order that pressurizing chain is in a suitable tensioning scope, pressurizing chain of bit hole rig control device structure all the time
As shown in figure 1, include equilibrium oil cylinder, equilibrium oil cylinder cylinder barrel bottom be connected with balance frame, balance frame is provided with upper sprocket wheel and
Lower sprocket, upper sprocket wheel carries out tensioning control to pressurizing chain outside pressurizing chain.During rotary drill work, equalize the equal of oil cylinder
Weighing apparatus oil cylinder big chamber oil-feed (equilibrium oil cylinder loculus is fuel-displaced), the cylinder barrel of equilibrium oil cylinder runs downwards the wheel promoting balance frame to make upper sprocket wheel
Axially move down, pressurizing chain is tightened up；The equilibrium big chamber of oil cylinder fuel-displaced (equilibrium oil cylinder loculus oil-feed) drives balance frame to make when retracting
Move on upper sprocket wheel, pressurizing chain is relaxed.Equilibrium tensioner bottom is provided with buffer spring, during for absorbing pressurization drilling
From the reaction punch power to rifler for the different ore-rock hardness.
Can be seen that from the control principle that above-mentioned rotary drill chain equalizes tensioner, the tensioning of pressurizing chain and putting
Pine is controlled by equilibrium oil cylinder really.Domestic rotary drill producer is all by electromagnetic switch to the control of equilibrium oil cylinder at present
Valve controls, shown in rotary drill equilibrium cylinder control device structural representation as existing in Fig. 2：When solenoid directional control valve b end electric magnet
When obtaining electric, reversal valve commutation makes the first oil circuit that the big chamber of equilibrium oil cylinder is passed through to be connected connect with oil pump, equilibrium oil cylinder big chamber oil-feed,
The second oil circuit that equilibrium oil cylinder loculus is connected is fuel-displaced, and the cylinder barrel of equilibrium oil cylinder stretches out, and balance frame moves down, and pressurizing chain is tensioned；
When solenoid directional control valve a end electric magnet obtains electric, reversal valve commutation makes equilibrium oil cylinder loculus pass through the second oil circuit and the oil pump being connected
Connection oil-feed, equalizes oil cylinder loculus oil-feed, equilibrium cylinder tube is retracted, and equalizing prong moves, and pressurizing chain loosens.
At present, the control elastic to pressurizing chain is by operator's manual operation by rule of thumb, such as finds pressurizing chain mistake
Song Shi, the button on artificial operation rotary drill PLC control station is powered to solenoid directional control valve b end electric magnet, big to equilibrium oil cylinder
Chamber fuel feeding makes equilibrium cylinder tube stretch out, and carries out tensioning to pressurizing chain；During as found chain tension, manually operate rotary drill
Button on PLC control station is powered to solenoid directional control valve a end electric magnet, so that equilibrium cylinder tube is contracted to equilibrium oil cylinder loculus fuel feeding
Return, pressurizing chain is loosened；If tensioning excessively or is loosened excessively, press control knob again by pressurizing chain again
Tune pine/tighten a bit；This control mode sense organ experience with operator entirely, and to find most suitable elastic when adjusting
Degree there is also technical difficulty.
Content of the invention
For the deficiencies in the prior art, this utility model provides a kind of pressurizing chain of bit hole rig auto-tensioning and controls dress
Put, can automatically realize the tensioning degree of pressurizing chain is controlled so as to be in suitable tensioning all the time using this device
In the range of, and need not manually operate.
For achieving the above object, pressurizing chain of bit hole rig auto-tensioning control device of the present utility model, including
Equilibrium oil cylinder, the solenoid directional control valve on oil pump, and the oil circuit being connected between described equilibrium oil cylinder and oil pump, described oil circuit includes
Be connected the first oil circuit with the big chamber of equilibrium oil cylinder of described Jun Heng oil cylinder, and connects with the equilibrium oil cylinder loculus of described Jun Heng oil cylinder
Second oil circuit, it is characterized in that：It is provided with, on described first oil circuit, the pressure transducer that chamber big with equalize oil cylinder is connected,
Communicate to connect between described pressure transducer and rotary drill PLC control station.
One of below scheme, all can be used as preferred version of the present utility model：
On described first oil circuit, it is provided with overflow valve.
On described first oil circuit, between described pressure transducer and described solenoid directional control valve, it is provided with one-way throttle
Valve.
Hydraulic control one-way valve, the oil-control road of described hydraulic control one-way valve and described second oil are provided with described first oil circuit
Road is connected.
It is provided with accumulator, described accumulator is located at described pressure transducer and described equilibrium oil cylinder on described first oil circuit
Between big chamber, described accumulator chamber big with Jun Heng oil cylinder is connected.
During using pressurizing chain of bit hole rig auto-tensioning control device of the present utility model, just first detecting rotary drill
Often under working condition, pressurizing chain is in the oil pressure value P in equilibrium oil cylinder big chamber during the maximum tension degree state of certain appropriate tensioning1
Be in certain appropriate tensioning minimum rate of tension state when equilibrium the big chamber of oil cylinder in oil pressure value P2, that is, just detecting pressurizing chain
Often equilibrium oil cylinder big intracavity oil pressure value scope P of working condition1～P2.Pressure transducer is carried out to the pressure in the equilibrium big chamber of oil cylinder
Real-time monitoring, when equilibrium oil cylinder big intracavity oil pressure value is less than P2, pressure transducer photos and sending messages are to rotary drill PLC control station, PLC
Control station issues instructions to solenoid directional control valve b end electric magnet and powers, and solenoid directional control valve commutates, and oil pump supplies to the equilibrium big chamber of oil cylinder
Oil, pressurizing chain tensioning, when equilibrium oil cylinder big intracavity oil pressure value is more than P1, pressure transducer signal to rotary drill PLC control
Platform processed, PLC control station sends instruction solenoid directional control valve b end electric magnet dead electricity, and oil pump stops to equilibrium oil cylinder big chamber fuel feeding, plus
Pressure chain does not continue to tensioning.
After being provided with overflow valve on described first oil circuit, when drill bit is caused to equalize oil cylinder big intracavity wink by accidental shock
Between pressure increase, equilibrium oil cylinder big intracavity hydraulic oil can flow out by overflow valve, plays protection to equalizing oil cylinder and pressurizing chain
Effect.
When, on described first oil circuit, being provided with one-way throttle between described pressure transducer and described solenoid directional control valve
Valve, when oil pump is to equilibrium oil cylinder big chamber fuel feeding, oil circuit passes through the check valve fuel feeding of one-way throttle valve, when oil pump is to equilibrium oil cylinder
During loculus fuel feeding, the choke valve that equilibrium oil cylinder big chamber oil circuit passes through one-way throttle valve is fuel-displaced.So, one-way throttle valve can control
The speed that equilibrium oil cylinder is retracted, it is to avoid equilibrium oil cylinder active force by buffer spring when retracting produces " hypervelocity " and then makes equilibrium
Oil cylinder loculus produces vacuum, and so that equilibrium oil cylinder is damaged.
When hydraulic control one-way valve, the oil-control road of described hydraulic control one-way valve and described second are provided with described first oil circuit
Oil circuit is to connection.When oil pump is to equilibrium oil cylinder big chamber fuel feeding, oil circuit passes through hydraulic control one-way valve fuel feeding, when oil pump stops to equilibrium
During the fuel feeding of oil cylinder big chamber, can prevent hydraulic oil from flowing backwards；When oil pump is to equilibrium oil cylinder loculus fuel feeding, it is connected with described second oil circuit
The oil-control road control pressure oil-feed of logical hydraulic control one-way valve, hydraulic control one-way valve is reversely opened, and equilibrium oil cylinder big chamber oil circuit passes through liquid
Control check valve is fuel-displaced.When solenoid directional control valve is in an intermediate position (when electromagnetic valve a end electric magnet and b end electric magnet all must not be electric)
Hydraulic control one-way valve can stop the hydraulic oil of the equilibrium big intracavity of oil cylinder from flowing back to fuel tank through solenoid directional control valve, makes the big intracavity of equilibrium oil cylinder
Pressure be maintained；Ensure that pressurizing chain is in suitable tensioning state.
When on described first oil circuit, between described pressure transducer chamber big with described equilibrium oil cylinder, it is provided with energy storage
Device, described accumulator chamber big with Jun Heng oil cylinder is connected.Keep certain between hydraulic oil in accumulator chamber big with Jun Heng oil cylinder
Pressure, when in work due to the shake of drill bit or pressurizing chain wear and tear elongated cause to equalize oil cylinder big intracavity oil pressure reduce when,
Hydraulic oil in accumulator can supplement in time and enter into the equilibrium big intracavity of oil cylinder, it is to avoid solenoid directional control valve frequent starting repairing, this
One design can greatly extend the service life of solenoid directional control valve；Simultaneously when drill bit is caused to equalize the big chamber of oil cylinder by rock impact
When interior oil pressure moment increases, accumulator can absorb the hydraulic shock of the equilibrium big intracavity of oil cylinder in time, and pressure exceedes the tune of overflow valve
During definite value, overflow valve is opened, and too high pressure oil can discharge in oil sump tank；Effectively prevent pressurizing chain because moment impact is by accident
" earning disconnected ".
As can be seen here, this utility model detects the pressure of the equilibrium big intracavity of oil cylinder by pressure transducer, and in real time will
To rotary drill PLC control station, rotary drill PLC control station controls the dynamic of solenoid directional control valve to the pressure signal transmission detecting again
Make, so that the pressure of the big intracavity of equilibrium oil cylinder is in all the time in a rational pressure limit, final realization equalizes the automatic of chain
Tensioning.
Brief description
Fig. 1 is pressurizing chain of bit hole rig control device structural representation.
Fig. 2 is that existing rotary drill equalizes cylinder control device structural representation.
Fig. 3 is pressurizing chain of bit hole rig auto-tensioning control device structural representation of the present utility model.
In figure：1st, equalize oil cylinder, 2, accumulator, 3, one-way throttle valve, 4, pressure transducer, 5, overflow valve, 6, hydraulic control list
To valve, 7, solenoid directional control valve, 8, oil pump, 9, oil circuit, 10, rotary drill PLC control station, 11, the equilibrium big chamber of oil cylinder, 12, equilibrium
Oil cylinder loculus, 13, upper sprocket wheel, 14, balance frame, 15, lower sprocket, 16, pressurizing chain, the 91, first oil circuit, the 92, second oil circuit.
Specific embodiment
Below in conjunction with specific embodiment pressurizing chain of bit hole rig auto-tensioning control device of the present utility model is made into
One step describes in detail.
Pressurizing chain of bit hole rig auto-tensioning control device as shown in drawings, including equilibrium oil cylinder 1, oil pump 8, and connects
It is connected on the solenoid directional control valve 7 on the oil circuit 9 between described equilibrium oil cylinder 1 and oil pump 8, described oil circuit 9 includes and described Jun Heng oil
The big chamber of equilibrium oil cylinder 11 of cylinder 1 is connected the first oil circuit 91, and connects second with the equilibrium oil cylinder loculus 12 of described Jun Heng oil cylinder 1
Oil circuit 92, the first oil circuit 91 is provided with the pressure transducer 4 that chamber 11 big with equalize oil cylinder is connected, described pressure transducer 4
Communicate to connect and rotary drill PLC control station 10 between.On first oil circuit 91, it is provided with overflow valve 5；On first oil circuit 91, position
It is provided with one-way throttle valve 3 between described pressure transducer 4 and described solenoid directional control valve 7；It is provided with liquid on first oil circuit 91
Control check valve 6, the oil-control road of described hydraulic control one-way valve 6 and described second oil circuit 92 are to connecting；On first oil circuit 91, positioned at described
It is provided with accumulator 2, described accumulator 2 chamber 11 big with Jun Heng oil cylinder between pressure transducer 4 chamber 11 big with described Jun Heng oil cylinder
It is connected.
During using pressurizing chain of bit hole rig auto-tensioning control device of the present utility model, first detect this rotary drill
Under normal running conditions, pressurizing chain is in the oil pressure in the equilibrium big chamber of oil cylinder 11 during the maximum tension degree state of certain appropriate tensioning
Value P1For 5.5Mpa and be in certain appropriate tensioning minimum rate of tension state when equalize the big chamber of oil cylinder 11 in oil pressure value P2For
3.7Mpa, that is, detect oil pressure value scope 5.5～3.7Mpa in the big chamber of equilibrium oil cylinder 11 of pressurizing chain normal operating conditions.Pressure
Force transducer 4 carries out real-time monitoring to the pressure in the equilibrium big chamber of oil cylinder 11, when in the equilibrium big chamber of oil cylinder 11, oil pressure value is less than P2, pressure
To rotary drill PLC control station 10, PLC control station issues instructions to the b end electricity of solenoid directional control valve 7 to force transducer 4 photos and sending messages
Magnet is powered, and solenoid directional control valve commutates, and, to the equilibrium big chamber of oil cylinder 11 fuel feeding, pressurizing chain 16 tensioning, when equilibrium oil cylinder is big for oil pump 8
In chamber 11, oil pressure value is more than P1, pressure transducer 4 signals to PLC control station, and PLC control station sends instruction solenoid directional control valve
7 b end electric magnet dead electricity, oil pump 8 stops to the equilibrium big chamber of oil cylinder 11 fuel feeding, and pressurizing chain does not continue to tensioning.
During work, when drill bit is caused instantaneous pressure in the equilibrium big chamber of oil cylinder 11 to increase by accidental shock, and exceed overflow
Setting (the equal to or slightly greater than P of valve 51) when, in the equilibrium big chamber of oil cylinder 11, hydraulic oil can be flowed out, to equal by overflow valve 5
Weighing apparatus oil cylinder 1 and pressurizing chain 16 play a protective role.Positioned at setting between described pressure transducer 4 and described solenoid directional control valve 7
After being equipped with one-way throttle valve 3, when oil pump 8 is to the equilibrium big chamber of oil cylinder 11 fuel feeding, oil circuit is supplied by the check valve of one-way throttle valve 3
Oil, when oil pump 8 is to equilibrium oil cylinder loculus 12 fuel feeding, the equilibrium big chamber of oil cylinder 11 oil circuit is gone out by the choke valve of one-way throttle valve 3
Oil.After being provided with hydraulic control one-way valve 6 on described first oil circuit 91, the oil-control road of described hydraulic control one-way valve 6 and described second oil circuit
92 to connection.When oil pump 8 to equilibrium the big chamber of oil cylinder 11 fuel feeding when, oil circuit pass through hydraulic control one-way valve 6 fuel feeding, when oil pump 8 stop to
During the equilibrium big chamber of oil cylinder 11 fuel feeding, can prevent hydraulic oil from flowing backwards；When oil pump 8 is to equilibrium oil cylinder loculus 12 fuel feeding, with described the
The oil-control road of the hydraulic control one-way valve 6 that two oil circuits 92 are connected is controlled by input pressure, and hydraulic control one-way valve is reversely opened, equilibrium oil
It is fuel-displaced that the big chamber of cylinder 11 oil circuit passes through hydraulic control one-way valve 6.On described first oil circuit 91, equal with described positioned at described pressure transducer 4
After being provided with accumulator 2 between the weighing apparatus big chamber of oil cylinder 11, described accumulator 2 chamber 11 big with Jun Heng oil cylinder is connected, in accumulator 2
Hydraulic oil keeps certain pressure between chamber 11 big with Jun Heng oil cylinder, when shake or the pressurizing chain abrasion due to drill bit in work
Elongated cause equalize the big chamber of oil cylinder 11 in oil pressure reduce when, the hydraulic oil in accumulator 2 can supplement in time and enter into equilibrium oil cylinder
In big chamber 11, it is prevented effectively from solenoid directional control valve 7 frequent starting repairing, greatly extend the service life of solenoid directional control valve 7；Simultaneously
When drill bit is caused to equalize oil pressure moment increase in the big chamber of oil cylinder 11 by rock impact, accumulator 2 can absorb equilibrium oil in time
Hydraulic shock in the big chamber of cylinder 11, when pressure exceedes the setting of overflow valve 5, overflow valve 5 is opened, and too high pressure oil can discharge
In oil sump tank；Effectively prevent pressurizing chain because moment impact is by accident " earning disconnected ".
Using pressurizing chain of bit hole rig auto-tensioning control device of the present utility model, the control in whole work
Cheng Wuxu human intervention, on the one hand reduces the labor intensity of operator, on the other hand farthest avoids anthropic factor
Operational error causes the infringement to equipment.Make domestic rotary drill to intellectuality, automation development further simultaneously.
Claims (5)
1. a kind of pressurizing chain of bit hole rig auto-tensioning control device, including equilibrium oil cylinder (1), oil pump (8), and is connected to institute
State the solenoid directional control valve (7) on the oil circuit (9) between equilibrium oil cylinder (1) and oil pump (8), described oil circuit (9) includes equal with described
The big chamber of equilibrium oil cylinder (11) of weighing apparatus oil cylinder (1) is connected the first oil circuit (91), and little with the equilibrium oil cylinder of described Jun Heng oil cylinder (1)
Chamber (12) be connected the second oil circuit (92) it is characterised in that：It is provided with chamber big with equalize oil cylinder on described first oil circuit (91)
(11) pressure transducer (4) being connected, communication link between described pressure transducer (4) and rotary drill PLC control station (10)
Connect.
2. pressurizing chain of bit hole rig auto-tensioning control device according to claim 1 it is characterised in that：Described first
Overflow valve (5) is provided with oil circuit (91).
3. pressurizing chain of bit hole rig auto-tensioning control device according to claim 1 and 2 it is characterised in that：Described
One-way throttle valve (3) is provided with the first oil circuit (91), described one-way throttle valve (3) is located at described pressure transducer (4) and electricity
Between magnetic reversal valve (7).
4. pressurizing chain of bit hole rig auto-tensioning control device according to claim 1 and 2 it is characterised in that：Described
Hydraulic control one-way valve (6), the oil-control road of described hydraulic control one-way valve (6) and described second oil circuit (92) are provided with the first oil circuit (91)
It is connected.
5. pressurizing chain of bit hole rig auto-tensioning control device according to claim 1 and 2 it is characterised in that：Described
Accumulator (2) is provided with the first oil circuit (91), described be provided with accumulator (2) be located at described pressure transducer (4) with Jun Heng
Between the big chamber of oil cylinder (11), described accumulator (2) chamber (11) big with Jun Heng oil cylinder is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620870926.0U CN205956325U (en) | 2016-08-12 | 2016-08-12 | Automatic tensioning controlling means of rotary drilling machine pressurization chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620870926.0U CN205956325U (en) | 2016-08-12 | 2016-08-12 | Automatic tensioning controlling means of rotary drilling machine pressurization chain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205956325U true CN205956325U (en) | 2017-02-15 |
Family
ID=57974605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620870926.0U Expired - Fee Related CN205956325U (en) | 2016-08-12 | 2016-08-12 | Automatic tensioning controlling means of rotary drilling machine pressurization chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205956325U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339719A (en) * | 2018-11-07 | 2019-02-15 | 包头钢铁（集团）有限责任公司 | A kind of rotary drill promotes the quick connecting method of pressurizing chain |
| US11649713B2 (en) | 2021-10-15 | 2023-05-16 | Caterpillar Global Mining Equipment Llc | Rope tensioning system for drilling rig |
-
2016
- 2016-08-12 CN CN201620870926.0U patent/CN205956325U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339719A (en) * | 2018-11-07 | 2019-02-15 | 包头钢铁（集团）有限责任公司 | A kind of rotary drill promotes the quick connecting method of pressurizing chain |
| US11649713B2 (en) | 2021-10-15 | 2023-05-16 | Caterpillar Global Mining Equipment Llc | Rope tensioning system for drilling rig |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 Termination date: 20210812 |