CN208057250U - A kind of the control of engine speed circuit and system of integral type all-hydraulic drill - Google Patents
A kind of the control of engine speed circuit and system of integral type all-hydraulic drill Download PDFInfo
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- CN208057250U CN208057250U CN201820561487.4U CN201820561487U CN208057250U CN 208057250 U CN208057250 U CN 208057250U CN 201820561487 U CN201820561487 U CN 201820561487U CN 208057250 U CN208057250 U CN 208057250U
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Abstract
The utility model discloses a kind of control of engine speed circuit of integral type all-hydraulic drill and systems, belong to control of engine speed technical field.Cancel engine speed switching switch in the utility model integral type full-hydraulic drill machine equipment, intermediate relay is changed to automatically control, the switching of bore state and walking states and interlocking of two solenoid valve control integral type all-hydraulic drills, the intermediate relay in parallel in respective circuit, the output rotating speed of the connection switching engine by respectively corresponding to relay；The interlocking of three relays is realized by three-position switch and three relays.Operating personnel are without being manually operated speed switch in the utility model, engine can automated to respond to, export the correspondence rotating speed that the various working conditions of drilling machine need, the action of manual switching when eliminating control of engine speed switch and operation, while also avoiding operating personnel and forgetting the problem of speed-changing control switch causes engine to fail to work in the best condition.
Description
Technical field
The utility model is related to control of engine speed technical fields, all-hydraulic more specifically to a kind of integral type
The control of engine speed circuit and system of drilling machine.
Background technology
Main force equipment of the integral type all-hydraulic drill (hereinafter referred to as " drilling machine ") as brill blast hole during mining,
Domestic market is monopolized by a few external producer always for a long time.The type drilling machine is all using an engine while to drive
Hydrodynamic pressure pump group and air compressor work.Engine is the main power source of the type drilling machine.
The drilling machine of each producer all allows engine with highest 2200rpm rotary speed workings, the stage during the work time in early days
Engine is mostly hydraulic injection, and engine speed is controlled using throttle swing rod.With the promotion of engine emission requirements, engine
Gradually upgrade to electronic oil injection form, rotating speed is by engine controller ECU (some engines are referred to as " ECM ") control.Each factory
Family reduces vibration and the noise of drilling machine partially operational state to reduce the fuel consumption rate in the drilling machine course of work, will
The working speed of drilling machine engine is set as third gear.One grade is drilling machine idling mode, and engine speed 1200rpm, two grades are
Drilling machine connecting and disconnecting drill rod or walking states, engine speed 1800rpm, third gear are drill hole of drilling machine working condition, engine speed
For 2200rpm.
Currently, in order to realize that the working speed switching of engine, the rotating speed control that each producer has been all made of one three are opened
It closes (as shown in Figure 2), the gear by switching switch realizes the transformation of engine speed.But this control method for engine speed
It needs, there are one switching action, to increase non-cutting time；And operating personnel often forget about speed-changing, and drilling machine is made to fail
It works under optimum speed state, reduces the working efficiency of drilling machine.
Through retrieval, China Patent No. ZL201410111553.4, authorized announcement date is August in 2016 17, innovation and creation
It is entitled：The control method for engine speed and system of drilling machine；This application engine speed be divided into low or first gear, top gear and
Mid ranger；According to the rotating speed of the operating conditions engine of drilling machine, wherein under idling and walking operating mode, engine is operated in low speed
Shelves by the way that low or first gear branch, mid ranger branch and top gear branch are arranged in engine control system, and are connected wherein all the way
It simultaneously switches off other two-way and is operated in corresponding rotating speed to control engine.This application also discloses the hair of corresponding drilling machine
The rotating speed of engine is subdivided into third gear, and the operating mode of drilling machine is subdivided into idling and other six by motivation revolution speed control system
Kind working condition matches corresponding rotating speed according to its practical work requirements, makes under most of operating mode, engine is not in top gear
Work achievees the purpose that reduce power consumption, reduces noise.
China Patent No. ZL201420026747.X also discloses that a kind of insulated type working at height car engine automatic speed regulation
Control system；This application is provided with the hand hydraulically controlled proportional multi-way valve of load-sensitive, load-sensitive manual multiple-way valve, pressure relay
The elements such as device, throttle control, relay.Engine automatic speed regulation control system is more according to the hand hydraulically controlled ratio of load-sensitive
The feedback load pressure signal that the hydraulic oil that road valve and load-sensitive manual multiple-way valve lead in executive component generates, through pressure after
Hydraulic energy is converted to electric energy to automatically control engine speed by electric appliance, and the setting value of rotating speed is acted according to executive component difference
Demand of the situation to fuel delivery is different, implements the high, medium and low third speed automatic speed regulation control of engine.
Though above-mentioned application case can realize engine high, medium and low third speed automatic speed regulation control, be from solve from
The angle of body Problems is set out the technical solution of design, and there are complex structural designs in various degree, and manufacturing cost is high
Defect still needs to be further improved.
Utility model content
1. utility model technical problems to be solved
Utility model aims to solve by three selection of speed switch change-over engine speed of manual switching, increase
The problem of having added non-cutting time, having reduced the working efficiency of drilling machine, provides a kind of engine of integral type all-hydraulic drill turn
Fast control circuit and system；For operating personnel it is not necessary that speed switch is manually operated, engine can be from the sound of something astir in the utility model
It answers, the correspondence rotating speed that the various working conditions of output drilling machine need, eliminates artificial when control of engine speed switch and operation
The action of switching, while also avoiding operating personnel (especially beginner) and forgetting that speed-changing control switch leads to engine not
The problem of capable of working in the best condition.
2. technical solution
In order to achieve the above objectives, technical solution provided by the utility model is：
A kind of control of engine speed circuit of integral type all-hydraulic drill of the utility model, integral type all-hydraulic drill
Cancel engine speed switching switch in equipment, is changed to intermediate relay and automatically controls, two full liquid of solenoid valve control integral type
The bore state and walking states of drilol press switch and interlocking, the intermediate relay in parallel in respective circuit, by respectively corresponding to
The output rotating speed of the connection switching engine of relay；The mutual of three relays is realized by three-position switch and three relays
Lock.
Further, include the ECU controllers of engine, three-position switch SA1, SA2, two-position switch SA3, solenoid valve
YV1, YV2, YV3, YV4, YV5 and intermediate relay KA13, KA14, KA15, KA16, KA17, the three-position switch SA1 is successively
Control intermediate relay KA13 obtains electric, solenoid valve YV1, YV5 connection, and solenoid valve YV5 is in parallel with intermediate relay KA13；Three
Bit switch SA2 control successively intermediate relay KA14, KA15, KA16 it is electric, solenoid valve YV2 and intermediate relay KA14 are simultaneously
Connection, solenoid valve YV3 is in parallel with intermediate relay KA15, the normally-closed contact for the KA14 and KA15 that connects before intermediate relay KA16；Institute
Obtaining for the two-position switch SA3 control intermediate relays KA17 stated is electric, and solenoid valve YV4 is in parallel with intermediate relay KA17.
Further, it connects before three-position switch SA1 the normally opened contact of intermediate relay KA14, in intermediate relay
The normally opened contact of series connection intermediate relay KA15 before KA17.
Further, the normally opened contact of the 39# control circuits connection intermediate relay KA16 of the ECU controllers；
61# control circuits connect two parallel branches, and a normally-closed contact by intermediate relay KA13 is with intermediate relay KA14's
Normally opened contact is connected, and another normally-closed contact by intermediate relay KA17 is connected with the normally opened contact of intermediate relay KA15；
81# control circuits also connect two parallel branches, the normally opened contact of a connection intermediate relay KA13, another connection centre
The normally opened contact of relay KA17.
Further, the ECU controller 39# control circuits are connected, and engine exports 1200rpm rotating speeds；61# is controlled
Circuit processed is connected, and engine exports 1800rpm rotating speeds；81# control circuits are connected, and engine exports 2200rpm rotating speeds.
A kind of engine revolution speed control system of integral type all-hydraulic drill of the utility model, including battery, generator
And starter, further include the control of engine speed circuit, the control of engine speed circuit in parallel is at the both ends of battery.
Further, the battery provides 24v direct current supply voltages, connects between starter and firing key SA6
The normally opened contact of the normally-closed contact and intermediate relay KA16 of intermediate relay KA1.
A kind of control method for engine speed of integral type all-hydraulic drill of the utility model, step are：
Step 1: before booting, total power switch SA0 is connected, is connected at engine ignition key SA6, three-position switch SA2
Yu Zhongwei makes KA16 obtain electric, and ECU controller 39# control circuits are connected, and engine exports 1200rpm rotating speeds；
Step 2: when connecting and disconnecting drill rod, three-position switch SA2 connects left position, KA14 obtains electric, YV2 and connects；The right position of SA1 connections,
YV1 is connected, KA13 dead electricity；ECU controller 61# control circuits are connected by the normally-closed contact of KA13 with the normally opened contact of KA14, hair
Motivation exports 1800rpm rotating speeds；
Step 3: when short walk, three-position switch SA2 connects right position, KA15 obtains electric, YV3 connections, at this time two-position switch
SA3 is disconnected, KA17 dead electricity；ECU controller 61# control circuits are connected by the normally-closed contact of KA17 with the normally opened contact of KA15, hair
Motivation exports 1800rpm rotating speeds；
Step 4: when boring work, three-position switch SA2 connects left position, KA14 obtains electric, YV2 and connects；Three-position switch SA1 connects
Logical left position, YV5 are connected, and KA13 obtains electric；ECU controller 81# control circuits are connected by the normally opened contact of KA13, engine output
2200rpm rotating speeds；
Step 5: when walking over long distances, three-position switch SA2 connects right position, KA15 obtains electric, YV3 connections, at this time two-position switch
SA3 is connected, and KA17 obtains electric, YV4 connections；ECU controller 81# control circuits are connected by the normally opened contact of KA17, engine output
2200rpm rotating speeds.
3. advantageous effect
It is had the advantages that compared with existing known technology using technical solution provided by the utility model：
(1) engine revolution speed control system of a kind of integral type all-hydraulic drill of the utility model, uses three to open
The connection that SA2 controls intermediate relay KA14, KA15, KA16 successively is closed, KA16 connects when three-position switch SA2 is in an intermediate position
It is logical, it avoids two or three intermediate relays simultaneously must be electric；
(2) engine revolution speed control system of a kind of integral type all-hydraulic drill of the utility model, goes here and there before KA13
The normally opened contact for joining KA14, KA15 normally opened contacts of connecting before KA17, by KA13's in the 61# control circuits of ECU controllers
Normally-closed contact is connected with the normally opened contact of KA14, and the normally-closed contact of KA17 is connected with the normally opened contact of KA15, can effectively be kept away
Exempt from ECU controller 61#, 81# control lines while being switched on；
(3) engine revolution speed control system of a kind of integral type all-hydraulic drill of the utility model, connects before KA16
The normally-closed contact of KA14 and KA15, under the premise of having avoided ECU controller 61#, 81# control lines while being switched on, into
39# and the 61# control line that one step avoids ECU controllers are also turned on or 39# and 81# control lines are also turned on；
(4) engine revolution speed control system of a kind of integral type all-hydraulic drill of the utility model realizes that engine turns
The automatic output of speed, saves the action of operating personnel's manual switching engine speed selecting switch, improves to a certain extent
Working efficiency, while avoiding operating personnel and forgetting that speed-changing selecting switch causes drilling machine in non-most efficient engine speed
It works under state；
(5) engine revolution speed control system of a kind of integral type all-hydraulic drill of the utility model, using 5 centres after
Electric appliance realizes the automatic switchover of engine speed output, and cost of implementation is low, and troubleshooting is convenient.
Description of the drawings
Fig. 1 is a kind of control principle of the control of engine speed circuit of integral type all-hydraulic drill of the utility model
Figure；
Fig. 2 is the control principle drawing of three conventionally employed speed switches；
Fig. 3 is the control system architecture schematic diagram of the utility model embodiment 2.
In figure：SA1- three-position switches；SA2- three-position switches；SA3- two-position switch；YV1, YV2, YV3, YV4, YV5- electromagnetism
Valve；KA13, KA14, KA15, KA16, KA17- intermediate relay.
Switching declaration：Three-position switch form be " On-Off-On ", text in about three-position switch have " left position ", " middle position ",
The description of " right position " respectively refers to switch and stops left side, intermediate, right side, and corresponding on off state is respectively that " left opens, right wing
Pass ", " left and right Lu Junguan ", " left pass right wing is opened "；Two-position switch form is " on-off ", corresponding circuits " on " or "off".
The engine speed selecting switch that dashed rectangle is three in Fig. 2, ECM functions described in figure and ECU described in text
It is identical.
Specific implementation mode
To further appreciate that the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
In conjunction with Fig. 1, a kind of control of engine speed circuit of integral type all-hydraulic drill of the present embodiment cancels one
Engine speed switching switch, is changed to intermediate relay and automatically controls in formula full-hydraulic drill machine equipment, two solenoid valve controls one
The bore state and walking states of body formula all-hydraulic drill switch and interlocking, and intermediate relay in parallel, passes through in respective circuit
The respectively output rotating speed of the connection switching engine of corresponding relay；Three relays are realized by three-position switch and three relays
The interlocking of device.
The control of engine speed circuit of the present embodiment, specifically includes the ECU controllers of engine, three-position switch SA1,
SA2, two-position switch SA3, solenoid valve YV1, YV2, YV3, YV4, YV5 and intermediate relay KA13, KA14, KA15, KA16,
KA17.The normally opened contact of series connection intermediate relay KA14 before the three-position switch SA1, during three-position switch SA1 is controlled successively
Between relay KA13 electric, solenoid valve YV1, YV5 connection, solenoid valve YV5 is in parallel with intermediate relay KA13；Three-position switch
SA2 control successively intermediate relay KA14, KA15, KA16 it is electric, solenoid valve YV2 is in parallel with intermediate relay KA14, electromagnetism
Valve YV3 is in parallel with intermediate relay KA15, the normally-closed contact for the KA14 and KA15 that connects before intermediate relay KA16；Described two
Obtaining for switch SA3 control intermediate relays KA17 is electric, and the normally opened of intermediate relay KA15 of connecting before intermediate relay KA17 touches
Point, solenoid valve YV4 are in parallel with intermediate relay KA17.
The normally opened contact of the 39# control circuits connection intermediate relay KA16 of the ECU controllers；61# control circuits
Connect two parallel branches, the normally opened contact string of a normally-closed contact by intermediate relay KA13 and intermediate relay KA14
Connection, another normally-closed contact by intermediate relay KA17 are connected with the normally opened contact of intermediate relay KA15；81# control circuits
Also two parallel branches, the normally opened contact of a connection intermediate relay KA13, another connection intermediate relay KA17 are connected
Normally opened contact.ECU controllers 39# control circuits are connected in the present embodiment, and engine exports 1200rpm rotating speeds；61# control lines
Road is connected, and engine exports 1800rpm rotating speeds；81# control circuits are connected, and engine exports 2200rpm rotating speeds.
The various working conditions of drilling machine are classified in the present embodiment, can be divided into five working conditions altogether, and by various works
It is corresponding (such as the following table 1) to make the rotating speed that state needs engine to provide with it.The rotating speed of engine supplier as desired is allowed to control
Mode opens engine PTO functions, and First Speed, second speed, third speed is respectively set to desired output and turned
Speed, i.e. 1200rpm, 1800rpm, 2200rpm；Five kinds of working conditions are respectively turned on by intermediate relay, and by electric signal
Rotating speed output point corresponding with Engine ECU controller is connected.
1 five kinds of working conditions of table table corresponding with engine speed
| Serial number | Working condition | Engine speed (rpm) |
| 1 | Idling | 1200 |
| 2 | Connecting and disconnecting drill rod | 1800 |
| 3 | Short walk | 1800 |
| 4 | Boring work | 2200 |
| 5 | It walks over long distances | 2200 |
Explanation：Short walk is walking states with walking over long distances；Connecting and disconnecting drill rod and boring work are drilling shape
State.
Specific control method refers to figure 1, and when idling, intermediate relay KA16 obtains electric, ECU controller 39# control lines connection,
It is 1200rpm that engine, which exports rotating speed,；When connecting and disconnecting drill rod, intermediate relay KA13 dead electricity, KA14 obtain electric, ECU controllers 61# controls
Line processed is connected, and it is 1800rpm that engine, which exports rotating speed,；When short walk, intermediate relay KA17 dead electricity, KA15 obtain electric, ECU
Controller 61# control lines are connected, and it is 1800rpm that engine, which exports rotating speed,；When boring work, intermediate relay KA13 obtains electric, ECU
Controller 81# control lines are connected, and it is 2200rpm that engine, which exports rotating speed,；Over long distances walk when, intermediate relay KA17 obtain it is electric,
ECU controller 81# control lines are connected, and it is 2200rpm that engine, which exports rotating speed,.
Operating method in drilling machine practical work process is as follows：When idling, SA2 switches to middle position, intermediate relay KA16
Must be electric, it is 1200rpm that engine, which exports rotating speed,；When connecting and disconnecting drill rod, SA2 switches to left position, and SA1 switches to right position, intermediate relay
Device KA13 dead electricity, KA14 obtain it is electric, engine export rotating speed be 1800rpm；When short walk, SA2 switches to right position, and SA3 is disconnected
Open, intermediate relay KA17 dead electricity, KA15 obtain it is electric, engine export rotating speed be 1800rpm；When boring work, SA2 switches to a left side
Position, SA1 switch to left position, and intermediate relay KA13 obtains electric, and it is 2200rpm that engine, which exports rotating speed,；When walking over long distances, SA2
Switch to right position, SA3 is connected, and intermediate relay KA17 obtains electric, and it is 2200rpm that engine, which exports rotating speed,.
The control of engine speed circuit of the present embodiment using three-position switch SA2 control successively intermediate relay KA14,
The connection of KA15, KA16, when three-position switch SA2 is in an intermediate position, KA16 is connected, avoid two or three centres after
Electric appliance obtains electric, the normally opened contact for the KA14 that connects before KA13, KA15 normally opened contacts of connecting before KA17, in ECU controllers simultaneously
61# control circuits in the normally-closed contact of KA13 is connected with the normally opened contact of KA14, by the normally-closed contact of KA17 and KA15
Normally opened contact is connected, and can effectively be avoided ECU controller 61#, 81# control lines while is switched on；Connect KA14 before KA16
With the normally-closed contact of KA15, under the premise of having avoided ECU controller 61#, 81# control lines while being switched on, further
39# and the 61# control line for avoiding ECU controllers are also turned on or 39# and 81# control lines are also turned on, and are realized and are started
The automatic output of machine rotating speed saves the action of operating personnel's manual switching engine speed selecting switch, carries to a certain extent
Working efficiency has been risen, while having avoided operating personnel and forgetting that speed-changing selecting switch causes drilling machine in non-most efficient engine
It works under rotary regimes, while realizing the automatic switchover of engine speed output, cost of implementation using 5 intermediate relays
Low, troubleshooting is convenient.
Embodiment 2
In conjunction with Fig. 3, a kind of engine revolution speed control system of integral type all-hydraulic drill of the present embodiment, including battery,
Generator and starter, the battery provide 24v direct current supply voltages, the firing key front end installation insurance silk of starter.
Further include that air compressor as described in Example 1 adds Unloading Control circuit.It connects between starter and firing key SA6 intermediate
The normally opened contact of the normally-closed contact and intermediate relay KA16 of relay KA1.
The working condition of each device is referring to table 2 in the present embodiment,
Device state table under 2 five kinds of working conditions of table
Control of engine speed specifically includes following steps in the present embodiment：
1：Before booting, total power switch SA0 is connected, engine ignition key SA6 is connected, during SA2 necessarily is at this time
Position, makes KA16 obtain electric, otherwise engine starter will be unable to be powered, and engine cannot be started up.
KA16 obtains electric, ECU rotating speed control lines 39# connections, engine output 1200rpm rotating speeds.
2：When connecting and disconnecting drill rod, SA2 connects left position, KA14 obtains electric, YV2 and connects；SA1 connects right position, YV1 is connected, and KA13 loses
Electricity；ECU rotating speed control line 61# are connected by KA13 (normally closed point) with KA14 (opened point closure), and engine exports 1800rpm and turns
Speed.
3：When short walk, SA2 connects right position, KA15 obtains electric, YV3 connections, and SA3 is disconnected at this time, KA17 dead electricity；ECU
Rotating speed control line 61# is connected by KA17 (normally closed point) with KA15 (opened point closure), and engine exports 1800rpm rotating speeds.
4：When boring work, SA2 connects left position SA2 connections left position, KA14 obtains electric, YV2 and connects；SA1 connects left position, YV5
It connects, KA13 obtains electric；ECU rotating speed control line 81# are connected by KA13 (opened point closure), and engine exports 2200rpm rotating speeds；
5：When walking over long distances, SA2 connects right position, KA15 obtains electric, YV3 connections, and SA3 is connected at this time, and KA17 obtains electric, YV4
It connects；ECU rotating speed control line 81# are connected by KA17 (opened point closure), and engine exports 2200rpm rotating speeds.
By operating above, engine can be conveniently allowed to export rotating speed automatically according to the program set.
Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing
Shown in also be the utility model one of embodiment, actual structure is not limited to this.So if this field
Those of ordinary skill enlightened by it, without deviating from the purpose of the present invention, not inventively design
Frame mode similar with the technical solution and embodiment, all should belong to the protection range of the utility model.
Claims (7)
1. a kind of control of engine speed circuit of integral type all-hydraulic drill, it is characterised in that：Integral type all-hydraulic drill is set
Standby middle cancellation engine speed switching switch, is changed to intermediate relay and automatically controls, two solenoid valve control integral types are all-hydraulic
The bore state and walking states of drilling machine switch and interlocking, the intermediate relay in parallel in respective circuit, by respectively correspond to after
The output rotating speed of the connection switching engine of electric appliance；The interlocking of three relays is realized by three-position switch and three relays.
2. a kind of control of engine speed circuit of integral type all-hydraulic drill according to claim 1, it is characterised in that：
ECU controllers including engine, three-position switch SA1, SA2, two-position switch SA3, solenoid valve YV1, YV2, YV3, YV4, YV5 and
Intermediate relay KA13, KA14, KA15, KA16, KA17, the three-position switch SA1 control intermediate relay KA13's successively
Electric, solenoid valve YV1, YV5 connection is obtained, solenoid valve YV5 is in parallel with intermediate relay KA13；During three-position switch SA2 is controlled successively
Between relay KA14, KA15, KA16 it is electric, solenoid valve YV2 is in parallel with intermediate relay KA14, solenoid valve YV3 and centre after
Electric appliance KA15 is in parallel, the normally-closed contact for the KA14 and KA15 that connects before intermediate relay KA16；In the two-position switch SA3 controls
Between relay KA17 it is electric, solenoid valve YV4 is in parallel with intermediate relay KA17.
3. a kind of control of engine speed circuit of integral type all-hydraulic drill according to claim 2, it is characterised in that：
The normally opened contact of series connection intermediate relay KA14, intermediate relay of connecting before intermediate relay KA17 before three-position switch SA1
The normally opened contact of KA15.
4. a kind of control of engine speed circuit of integral type all-hydraulic drill according to claim 3, it is characterised in that：
The normally opened contact of the 39# control circuits connection intermediate relay KA16 of the ECU controllers；61# control circuits connect two
Parallel branch, a normally-closed contact by intermediate relay KA13 are connected with the normally opened contact of intermediate relay KA14, another
The normally-closed contact of intermediate relay KA17 is connected with the normally opened contact of intermediate relay KA15；81# control circuits also connect two
Parallel branch, the normally opened contact of a connection intermediate relay KA13, another the normally opened of connection intermediate relay KA17 touch
Point.
5. a kind of control of engine speed circuit of integral type all-hydraulic drill according to claim 4, it is characterised in that：
The ECU controller 39# control circuits are connected, and engine exports 1200rpm rotating speeds；61# control circuits are connected, and engine is defeated
Go out 1800rpm rotating speeds；81# control circuits are connected, and engine exports 2200rpm rotating speeds.
6. a kind of engine revolution speed control system of integral type all-hydraulic drill, including battery, generator and starter, feature
It is：Further include the control of engine speed circuit as described in claim 1 or 5, which exists
The both ends of battery.
7. a kind of engine revolution speed control system of integral type all-hydraulic drill according to claim 6, it is characterised in that：
The battery provides 24v direct current supply voltages, the normally closed of intermediate relay KA1 of connecting between starter and firing key SA6
The normally opened contact of contact and intermediate relay KA16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820561487.4U CN208057250U (en) | 2018-04-19 | 2018-04-19 | A kind of the control of engine speed circuit and system of integral type all-hydraulic drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820561487.4U CN208057250U (en) | 2018-04-19 | 2018-04-19 | A kind of the control of engine speed circuit and system of integral type all-hydraulic drill |
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| Publication Number | Publication Date |
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| CN208057250U true CN208057250U (en) | 2018-11-06 |
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| CN201820561487.4U Active CN208057250U (en) | 2018-04-19 | 2018-04-19 | A kind of the control of engine speed circuit and system of integral type all-hydraulic drill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678865A (en) * | 2018-04-19 | 2018-10-19 | 马鞍山唐拓凿岩机械有限公司 | A kind of control of engine speed circuit, the system and method for integral type all-hydraulic drill |
-
2018
- 2018-04-19 CN CN201820561487.4U patent/CN208057250U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678865A (en) * | 2018-04-19 | 2018-10-19 | 马鞍山唐拓凿岩机械有限公司 | A kind of control of engine speed circuit, the system and method for integral type all-hydraulic drill |
| CN108678865B (en) * | 2018-04-19 | 2024-01-19 | 马鞍山唐拓凿岩机械有限公司 | Engine rotating speed control system and method of integrated full-hydraulic drilling machine |
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