CN208564428U - Portable full hydraulic rock core drilling machine - Google Patents
Portable full hydraulic rock core drilling machine Download PDFInfo
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- CN208564428U CN208564428U CN201820929114.8U CN201820929114U CN208564428U CN 208564428 U CN208564428 U CN 208564428U CN 201820929114 U CN201820929114 U CN 201820929114U CN 208564428 U CN208564428 U CN 208564428U
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Abstract
The utility model provides a kind of portable full hydraulic rock core drilling machine; including with multi-engined engine unit and wireless console, every engine includes starting relay, shutdown relay, the motor being electrically connected respectively with starting relay and shutdown relay, the first wireless remote control module and throttle actuator being electrically connected respectively with starting relay and shutdown relay and throttle actuator.Wireless console includes that the second wireless remote control module being electrically connected with multiple first wireless remote control modules and the remote control being electrically connected with the second wireless remote control module start switch, start solution lock-switch, multiple startup switches, multiple halt switches, emergency stop switch and throttle operation unit; one startup switch one engine start of corresponding control; one halt switch one tail-off of corresponding control, the throttle actuator of throttle operation unit every engine of synchronously control.The portable full hydraulic rock core drilling machine has the advantages that achievable remote control and realizes more engine synchronization speed regulation.
Description
Technical field
The utility model relates to engineering drilling equipment technical fields, specifically, being to be related to a kind of portable all-hydraulic rock
Core drilling machine.
Background technique
Existing portable full hydraulic rock core drilling machine needs staff directly to go to hair when carrying out start and stop to engine
The start and stop that engine is controlled at motivation and by the mechanical key rotary switch of engine control cabinet, cause during the work time
The front for needing staff to go to engine can control the start and stop of engine, and there are inconveniences, this is often
It will lead to staff only to start engine when most starting and at the end just close engine, without
Start and stop can be carried out to engine in midway so that in the portable full hydraulic rock core drilling machine course of work there are it is more standby when
Between, so that engine can continue fuel consumption in the standby state, increase use cost.Furthermore existing engine
Throttle Opening Control is realized by manual bracing wire, and inconvenient problem is equally existed, and cannot achieve more engines into
The synchronous speed-raising of row or synchronous deceleration.
Summary of the invention
To solve the above-mentioned problems, the main purpose of the utility model is to provide that a kind of oil consumption is low, can be achieved more starts
Machine synchronous variable-speed and the portable full hydraulic rock core drilling machine that can realize remote control.
In order to realize the main purpose of the utility model, the utility model provides a kind of portable full hydraulic rock core drilling machine,
Including engine unit and drilling unit, engine unit includes more engines, and more engines pass through hydraulic pipeline respectively
With drilling unit connect, wherein each engine include motor, the first wireless remote control module, starting relay, shutdown after
Electric appliance and throttle actuator, starting relay, shutdown relay are electrically connected with motor respectively, and starting relay shuts down relay
It is electrically connected respectively with the first wireless remote control module with throttle actuator, portable full hydraulic rock core drilling machine further includes wireless control
Platform, wireless console include that the second wireless remote control module, remote control start switch, starts and solve lock-switch, multiple startup switches, multiple
Halt switch, emergency stop switch and throttle operation unit, the second wireless remote control module are wireless with the first of each engine respectively
Remote control module electrical connection, remote control start switch, start solve lock-switch, multiple startup switches, multiple halt switches, emergency stop switch and
Throttle operation unit is electrically connected with the second wireless remote control module respectively, startup switch one engine start of corresponding control,
One halt switch one tail-off of corresponding control, the throttle of each engine of throttle operation unit synchronously control execute
Device.
Therefore wireless console can be realized by the second wireless remote control module and the first wireless remote control module to hair
Motivation carries out remote control, which includes long-range starting, remotely closes, remote emergency braking, long-range speed-raising, remotely drop
It is low etc..Wherein, wireless console can control multi-engined starting relay by multiple startup switches, make more to start
Machine is started；Multi-engined shutdown relay can be controlled by multiple halt switches, close more engines；
More engines can be controlled by emergency stop switch and synchronize emergency braking, can also be controlled more by throttle operation unit and be started
The throttle actuator of machine makes more engines synchronize speed-raising or synchronous reduction of speed.The portable full hydraulic rock core drilling machine has
Oil consumption is low, the advantages of more engine synchronizations adjust the speed and can realize remote control can be achieved.
Further embodiment is that each engine further includes engine oil pressure pickup, engine oil pressure pickup installation
In the lubricating oil pump of motor, starting relay is connected electrically between engine oil pressure pickup and the first wireless remote control module.
Therefore engine oil pressure pickup can detect the engine oil pressure in the lubricating oil pump of motor, and in machine
Signal is sent to the first wireless remote control module when oil pressure occurs abnormal, staff in time ties up engine
Shield.In addition, engine oil pressure pickup can also play a protective role to the starting of engine, engine is avoided to appear in work shape
Starting is duplicated when state.
Further scheme is that each engine further includes machine oil alarm, and machine oil alarm and first is wirelessly
Remote control module electrical connection.
Therefore when the engine oil pressure exception of the lubricating oil pump of motor, machine oil alarm is able to carry out alarm, so that work
Can in time engine be safeguarded by making personnel.
Further scheme is that each engine further includes speed probe, and speed probe is mounted on motor
Output end, speed probe is electrically connected with the first wireless remote control module.
Therefore speed probe is used to detect the output revolving speed of motor, enables the first wireless remote control module will
The revolving speed Real-time Feedback of motor understands the motor of engine convenient for staff to the display instrument of wireless console or engine
Current rotating speed state.
Further scheme is, each engine further includes revolving speed display table, revolving speed show table respectively with revolving speed
Sensor, the electrical connection of the first wireless remote control module.
Therefore revolving speed shows that table can carry out real-time display to the revolving speed of motor, it can convenient for field personnel
Know the current rotating speed of the motor of each engine.
Further scheme is that each engine further includes temperature sensor, and temperature sensor is arranged in motor
Cooling water tank in, temperature sensor with shut down relay be electrically connected.
Therefore temperature sensor is used to detect the water temperature of the cooling water tank of motor, and water temperature is super in cooling water tank
When crossing warning value, makes to shut down relay starting, engine is closed, engine and its motor are protected.
Further scheme is that each engine further includes temperature alarm, and temperature alarm is connected to temperature
Between sensor and shutdown relay.
Therefore when the water temperature in the cooling water tank of motor is more than warning value, temperature alarm will do it alarm, lead to
Know that staff replaces the water in cooling water tank, guarantees the normal operation of motor, engine.
Further scheme is that the quantity of engine is three, and the quantity of startup switch is three, the number of halt switch
Amount is three.
Further scheme is, each engine further includes generator and battery, the input terminal of generator and horse
The driving end connection reached, battery are connected electrically between the output end of generator and the first wireless remote control module.
Therefore the mechanical energy of motor can be converted into electric energy by generator, and by the power storage of generation to electric power storage
In pond, battery is enabled to be that the first wireless remote control module and each component are powered.
Further scheme is that each engine further includes cumulative timer, cumulative timer and power generation mechatronics.
Therefore cumulative timer is used to accumulate the working time of generator, to understand the work shape of generator
Condition.
Detailed description of the invention
Fig. 1 is the structure chart of the utility model full hydraulic rock core drilling machine embodiment.
Fig. 2 is the enlarged drawing in Fig. 1 at A.
Fig. 3 is the remote control principles schematic diagram of the utility model full hydraulic rock core drilling machine embodiment.
Fig. 4 is the systematic schematic diagram of the engine of the utility model full hydraulic rock core drilling machine embodiment.
The following is a further explanation of the present invention with reference to the accompanying drawings and embodiments.
Specific embodiment
Referring to figs. 1 to Fig. 3, portable full hydraulic rock core drilling machine 100 includes drilling unit 101, engine unit 102 and nothing
Line traffic control platform 2, wherein engine unit 102 include more engines 10, and more engines 10 respectively by hydraulic pipeline with
Creep into unit connection.
Wireless console 2 starts switch 22 including the second wireless remote control module 21, remote control, starts solution lock-switch 23, multiple
Startup switch 24, multiple halt switches 25, emergency stop switch 26 and throttle operation unit 27.Wherein, remote control starts switch 22, starting
Lock-switch 23, multiple startup switches 24, multiple halt switches 25, emergency stop switch 26 and throttle operation unit 27 are solved respectively with second
Wireless remote control module 21 is electrically connected.Remote control starts switch 22 for controlling the opening and closing of wireless console 2.Starting solution lock-switch 23 is used
In the connection for limiting multiple startup switches 24, i.e., when pressing startup switch 24, need to press starting solution lock-switch 23 simultaneously
The case where can star engine 10, and then engine 10 is avoided to duplicate starting plays a protective role to engine 10.
Referring to Fig. 4, and combine Fig. 2 and Fig. 3, each engine 10 include motor 11, the first wireless remote control module 12,
Starting relay 131 shuts down relay 132, throttle actuator 14, engine oil pressure pickup 151, machine oil alarm 152, revolving speed
Sensor 161, temperature sensor 171, temperature alarm 172, engine 181, battery 182 and cumulative timer 19.
Wherein, the second wireless remote control module 21 of wireless console 2 the first wireless remote with each engine 10 respectively
Module 12 is controlled, corresponding one engine 10 of control of a startup switch 24 of wireless console 2 starts, and the one of wireless console 2
A halt switch 25 is corresponding to control the closing of engine 10.
Specifically, when some or multiple startup switches 24 of wireless console 2 are pressed, some or multiple bootings
Switch 24 can send first control signal to the second wireless remote control module 21, so that the second wireless control module 21 passes through wireless remote
The first control signal is sent to the first wireless control module 12 of certain corresponding one or more engine 10 by the mode of control,
First wireless control module 12 of corresponding engine 10 after obtaining first control signal, can to engine 10 starting after
Electric appliance 131 exports enabling signal, connects starting relay 131, and then starter motor 11.
When some or multiple halt switches 24 of wireless console 2 are pressed, some or excessively a halt switch 25
Second control signal can be sent to the second wireless remote control module 21, so that the mould that the second wireless control module 21 passes through wireless remote control
The second control signal is sent to the first wireless control module 12 of certain corresponding one or more engine 10 by formula, corresponding
Engine 10 the first wireless control module 12 after obtaining second control signal, can to engine 10 shutdown relay
132 output stopping signals make to shut down the connection of relay 132, and then close motor 11, shut down engine 10.
When the emergency stop switch 26 of wireless console 2 is pressed, emergency stop switch 26 can be sent out to the second wireless remote control module 21
Third is sent to control signal, so that third control signal is sent to by the second wireless control module 21 by the mode of wireless remote control
First wireless control module 12 of each engine 10, so that the first wireless control module 12 of each engine 10 is obtaining
After taking third to control signal, emergency brake signal is exported to the emergency stop relay 260 of engine 10, connects emergency stop relay 206
It is logical, and then the motor 11 of each engine 10 is closed, all engines 10 are shut down, realize emergency braking.
Throttle operation unit 27 has fuel feeding shelves 271 and oil return shelves 272, and the throttle operation unit 27 is used for synchronously control
The throttle actuator 14 of each engine 10.Specifically, when the throttle operation unit 27 of wireless console 2 is pushed into fuel feeding
When shelves 271, throttle operation unit 27 can send the 4th control signal to the second wireless remote control module 21, so that the second wireless control
4th control signal is sent to the throttle actuator 14 of each engine 10 by the mode of wireless remote control by module 21, is made
It obtains throttle actuator 14 and acceleration cable tightening is controlled by the servo electrical machinery system inside a corresponding engine 10, in turn
Realization refuels to the motor 11 of a corresponding engine 10, and motor 11 is made to raise speed.
When the throttle operation unit 27 of wireless console 2 is struck to oil return shelves 272, throttle operation unit 27 can be to the
Two wireless remote control modules 21 send the 5th control signal, so that the second wireless control module 21 should by the mode of wireless remote control
5th control signal is sent to the throttle actuator 14 of each engine 10, so that throttle actuator 14 passes through corresponding one
Servo electrical machinery system control acceleration cable in platform engine 10 loosens, and then realizes the horse to a corresponding engine 10
Up to oil return is carried out, make 11 reduction of speed of motor.
Engine oil pressure pickup 151 is mounted in the lubricating oil pump of motor 11, and starting relay 131 is connected to engine oil pressure
Between sensor 151 and the first wireless remote control module 12.Engine oil pressure pickup 151 being capable of machine in the lubricating oil pump to motor 11
Oil pressure is detected, and sends abnormal signal to the first wireless remote control module 12 when engine oil pressure occurs abnormal, so that work
Can in time engine 10 be safeguarded by making personnel.In addition, engine oil pressure pickup 151 is also used to limit starting relay
131 connection, i.e., when engine 10 is inactive, the signal return that engine oil pressure pickup 151 is sent makes to open to being grounded
Motor type relay 131 is in can on-state；When engine 10 starts, the signal for sending engine oil pressure pickup 151 is no longer
Ground line is passed back to, so that starting relay 131 is in an off state, so that motor 11 be avoided to occur in the process of running
The case where being again started up.Machine oil alarm 152 is electrically connected with the first wireless remote control module 12, when the machine oil of the lubricating oil pump of motor 11
When pressure anomaly, machine oil alarm 152 is able to carry out alarm, and staff in time safeguards engine 10.
Speed probe 161 is mounted on the output end of motor 11,12 electricity of speed probe 161 and the first wireless remote control module
Connection.Speed probe 161 is used to detect the output revolving speed of motor 11, so that 12 pieces of the first wireless remote control mould can be by motor 11
Revolving speed Real-time Feedback to wireless console 2 or engine 10 display instrument, convenient for staff understand engine 10 horse
Up to 11 current rotating speed state.Preferably, each engine 10 further includes revolving speed display table 162, and revolving speed shows that table 162 is distinguished
It is electrically connected with the speed probe 161, the first wireless remote control module 12.Revolving speed shows that table 162 can be intuitively to motor 11
Revolving speed carry out real-time display, the current rotating speed of the motor 11 of each engine 10 can be known convenient for field personnel.
Temperature sensor 171 is arranged in the cooling water tank of motor 11,132 electricity of temperature sensor 171 and shutdown relay
Connection.Temperature sensor 171 is used to detect the water temperature of the cooling water tank of motor 11, and water temperature is more than warning value in cooling water tank
When, make to shut down the starting of relay 132, and then close engine 10, engine 10 and its motor 11 are protected.Temperature
Degree alarm 172 is connected to temperature sensor 172 and shuts down between relay 132.Water temperature in the cooling water tank of motor 11
When more than warning value, temperature alarm 173 will do it alarm, and staff is notified to replace the water in cooling water tank, protect
Demonstrate,prove the normal operation of motor 11, engine 10.
The input terminal of generator 181 is connect with the driving end of motor 11, and battery 182 is connected electrically in the defeated of generator 181
Between outlet and the first wireless remote control module 12.The mechanical energy of motor 11 can be converted into electric energy by generator 181, and will be generated
Power storage to battery 182 in, enable battery 182 to be that the first wireless remote control module 12 and each component are supplied
Electricity.Cumulative timer 19 is electrically connected with generator 181, and cumulative timer 19 is used to accumulate the working time of generator 181, with
Solve the working condition of generator 181.
Preferably, the quantity of the engine 10 of engine unit 102 is three；The startup switch 24 of wireless console 2
Quantity is three, and the quantity of halt switch 25 is three.
The working principle of portable full hydraulic rock core drilling machine 100 is as follows:
When needing to control engine unit 102, remote control is pressed first and starts switch 22, so that wireless console
2 power on and are started.
Then, some or multiple startup switches 24 are pressed, while needing to press starting solution lock-switch 23, and then make a certain
The control loops of a or multiple startup switches 24 is connected, so that some or multiple startup switches 24 are to the second wireless remote control module
21 send first control signals, and the second wireless remote control module 21 passes through wireless remote control mode for the after obtaining first control signal
One control signal is sent to the first wireless control module 12 of certain corresponding one or more engine 10, makes the first wireless control
Module 12 controls starting relay 131 and connects, and then starter motor 11, starts a corresponding engine 10.
When needing to raise speed to more engines, when the throttle operation unit 27 of wireless console 2 is pushed into confession
When oily shelves 271, throttle operation unit 27 can send the 4th control signal, the second wireless remote control mould to the second wireless remote control module 21
4th control signal is sent to a certain or more accordingly by wireless remote control mode after obtaining the 4th control signal by block 21
First wireless control module 12 of platform engine 10 makes the first wireless control module 12 control throttle actuator 14, and then makes oil
Door actuator 14 controls acceleration cable tightening by the servo electrical machinery system inside a corresponding engine 10, and then realizes
It refuels to the motor 11 of a corresponding engine 10, motor 11 is made to raise speed.
When needing to carry out reduction of speed to more engines, when the throttle operation unit 27 of wireless console 2 is struck to returning
When oily shelves 272, throttle operation unit 27 can send the 5th control signal, the second wireless remote control mould to the second wireless remote control module 21
5th control signal is sent to a certain or more accordingly by wireless remote control mode after obtaining the 5th control signal by block 21
First wireless control module 12 of platform engine 10 makes the first wireless control module 12 control throttle actuator 14, and then makes oil
Door actuator 14 controls acceleration cable by the servo electrical machinery system inside a corresponding engine 10 and unclamps, and then realizes
Oil return is carried out to the motor 11 of a corresponding engine 10, makes 11 reduction of speed of motor.
When needing to close certain one or more engine 10, some or multiple halt switches 25 are pressed, into
And the control loop of some or multiple halt switches 25 is connected, so that some or multiple halt switches 25 are wireless to second
Remote control module 21 sends second control signal, and the second wireless remote control module 21 passes through wireless remote control after obtaining second control signal
Second control signal is sent to the first wireless control module 12 of certain corresponding one or more engine 10 by mode, makes first
The control of wireless control module 12 is shut down relay 132 and is connected, and then closes motor 11, closes a corresponding engine 10.
When needing to carry out emergency braking to more engines 10, emergency stop switch 26, and then the control of emergency stop switch 26 are pressed
Circuit processed is connected, so that emergency stop switch 26, which sends third to the second wireless remote control module 21, controls signal, the second wireless remote control mould
Block 21 third is controlled that signal is sent to more engines 10 by wireless remote control mode after obtaining third control signal the
One wireless control module 12 connects the first wireless control module 12 control emergency stop relay 260, and then closes more engines
10 motor 11 shuts down all engines 10, realizes emergency braking.
To sum up, wireless console can be realized by the second wireless remote control module and the first wireless remote control module to hair
Motivation carries out remote control, which includes long-range starting, remotely closes, remote emergency braking, long-range speed-raising, remotely drop
It is low etc..Wherein, wireless console can control multi-engined starting relay by multiple startup switches, make more to start
Machine is started；Multi-engined shutdown relay can be controlled by multiple halt switches, close more engines；
More engines can be controlled by emergency stop switch and synchronize emergency braking, can also be controlled more by throttle operation unit and be started
The throttle actuator of machine makes more engines synchronize speed-raising or synchronous reduction of speed.The portable full hydraulic rock core drilling machine has
Oil consumption is low, the advantages of more engine synchronizations adjust the speed and can realize remote control can be achieved.
Finally it is emphasized that the above is only the preferred embodiment of the present invention, it is not limited to this reality
With novel, for those skilled in the art, the utility model can have various change and change, all in the utility model
Spirit and principle within, any modification, equivalent substitution, improvement and etc. done should be included in the protection model of the utility model
Within enclosing.
Claims (10)
1. portable full hydraulic rock core drilling machine, including engine unit and drilling unit, the engine unit include more hairs
Motivation, the more engines pass through hydraulic pipeline respectively and connect with the drilling unit, it is characterised in that:
The each engine includes that motor, the first wireless remote control module, starting relay, shutdown relay and throttle are held
Row device, the starting relay, the shutdown relay are electrically connected with the motor respectively, and the starting relay described stops
Machine relay and the throttle actuator are electrically connected with first wireless remote control module respectively；
The portable full hydraulic rock core drilling machine further includes wireless console, and the wireless console includes the second wireless remote control mould
Block, remote control start switch, start solution lock-switch, multiple startup switches, multiple halt switches, emergency stop switch and throttle operation list
Member, second wireless remote control module is electrically connected with the first wireless remote control module of each engine respectively, described distant
Control start switch, the starting solve lock-switch, multiple startup switches, multiple halt switches, the emergency stop switch and
The throttle operation unit is electrically connected with second wireless remote control module respectively, the corresponding control one of a startup switch
The engine start, the halt switch one tail-off of corresponding control, the throttle operation unit are same
The throttle actuator of the step each engine of control.
2. portable full hydraulic rock core drilling machine according to claim 1, it is characterised in that:
The each engine further includes engine oil pressure pickup, and the engine oil pressure pickup is mounted on the motor
In lubricating oil pump, the starting relay is connected electrically between the engine oil pressure pickup and first wireless remote control module.
3. portable full hydraulic rock core drilling machine according to claim 2, it is characterised in that:
The each engine further includes machine oil alarm, the machine oil alarm and first wireless remote control module electricity
Connection.
4. portable full hydraulic rock core drilling machine according to claim 3, it is characterised in that:
The each engine further includes speed probe, and the speed probe is mounted on the output end of the motor,
The speed probe is electrically connected with first wireless remote control module.
5. portable full hydraulic rock core drilling machine according to claim 4, it is characterised in that:
The each engine further includes revolving speed display table, the revolving speed show table respectively with the speed probe, institute
State the electrical connection of the first wireless remote control module.
6. portable full hydraulic rock core drilling machine according to claim 5, it is characterised in that:
The each engine further includes temperature sensor, and the cooling water tank of the motor is arranged in the temperature sensor
Interior, the temperature sensor is electrically connected with the shutdown relay.
7. portable full hydraulic rock core drilling machine according to claim 6, it is characterised in that:
The each engine further includes temperature alarm, and the temperature alarm is connected to the temperature sensor and institute
It states and shuts down between relay.
8. portable full hydraulic rock core drilling machine according to any one of claims 1 to 7, it is characterised in that:
The quantity of the engine is three；
The quantity of the startup switch is three, and the quantity of the halt switch is three.
9. portable full hydraulic rock core drilling machine according to claim 8, it is characterised in that:
The each engine further includes generator and battery, the driving end of the input terminal of the generator and the motor
Connection, the battery are connected electrically between the output end of the generator and first wireless remote control module.
10. portable full hydraulic rock core drilling machine according to claim 9, it is characterised in that:
The each engine further includes cumulative timer, the cumulative timer and the power generation mechatronics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820929114.8U CN208564428U (en) | 2018-06-14 | 2018-06-14 | Portable full hydraulic rock core drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820929114.8U CN208564428U (en) | 2018-06-14 | 2018-06-14 | Portable full hydraulic rock core drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208564428U true CN208564428U (en) | 2019-03-01 |
Family
ID=65486971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820929114.8U Active CN208564428U (en) | 2018-06-14 | 2018-06-14 | Portable full hydraulic rock core drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208564428U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113853464A (en) * | 2019-03-19 | 2021-12-28 | 金正洙 | Core drill control device |
-
2018
- 2018-06-14 CN CN201820929114.8U patent/CN208564428U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113853464A (en) * | 2019-03-19 | 2021-12-28 | 金正洙 | Core drill control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 519000 block a, No.12, Shenghui street, Jinding, high tech Zone, Zhuhai City, Guangdong Province Patentee after: ZHUHAI EGR SPECIAL DRILLING EQUIPMENT Co.,Ltd. Address before: 519000 Room 402, 29 Baozhong Road, Hengqin Town, Zhuhai City, Guangdong Province Patentee before: ZHUHAI EGR SPECIAL DRILLING EQUIPMENT Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 519000 block a, No.12, Shenghui street, Jinding, high tech Zone, Zhuhai City, Guangdong Province Patentee after: Guangdong Engel Geological Equipment Technology Co.,Ltd. Address before: 519000 block a, No.12, Shenghui street, Jinding, high tech Zone, Zhuhai City, Guangdong Province Patentee before: ZHUHAI EGR SPECIAL DRILLING EQUIPMENT Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |