CN117366040A - Interlocking device and mining equipment operation valve group applying same - Google Patents
Interlocking device and mining equipment operation valve group applying same Download PDFInfo
- Publication number
- CN117366040A CN117366040A CN202311471921.1A CN202311471921A CN117366040A CN 117366040 A CN117366040 A CN 117366040A CN 202311471921 A CN202311471921 A CN 202311471921A CN 117366040 A CN117366040 A CN 117366040A
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- Prior art keywords
- connecting rod
- limit
- door
- limiting
- door plate
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- 238000005065 mining Methods 0.000 title claims abstract description 17
- 238000009434 installation Methods 0.000 claims description 6
- 230000006872 improvement Effects 0.000 description 9
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wing Frames And Configurations (AREA)
Abstract
The invention discloses an interlocking device and a mining equipment operating valve group applying the same, wherein the device comprises a mounting plate, and a track window is arranged in the middle of the mounting plate; the sliding door plate is positioned in the track window and is in sliding fit with the track window; the limiting connecting rod is used for connecting the sliding door plate and the mounting plate, the end part of the limiting connecting rod is connected with the sliding door plate, the middle part of the limiting connecting rod is connected with the mounting plate, and the middle part of the limiting connecting rod moves along the up-down direction along with the sliding of the sliding door plate; the limiting bolt is used for limiting the limiting connecting rod to move up and down, is arranged on the upper part of the mounting plate and is matched with the middle part of the limiting connecting rod; the valve group solves the problems that the existing operation valve group is easy to operate by mistake and has large potential safety hazard, not only realizes the mechanical interlocking of the control valve group and simplifies the operation flow, but also reduces the potential safety hazard, reduces the labor intensity and improves the working efficiency.
Description
Technical Field
The invention relates to the technical field of mining equipment, in particular to an interlocking device and a mining equipment operating valve group using the same.
Background
Along with the continuous development of mining in the mechanized direction, the control function of underground operation equipment is basically realized by adopting a hydraulic operation valve group. In the coal mining operation process, the hydraulic operation valve groups of the equipment walking and equipment supporting operation cannot be operated simultaneously, if safety accidents are easily caused by the simultaneous operation, the safety hazards are extremely large, and therefore the operation valve groups are required to be interlocked, so that the equipment walking and the equipment supporting operation cannot be performed simultaneously.
The existing operation valve group has the advantages that most of the interlocking function is realized by adding the hydraulic valve group for switching, and the number and the variety of the valve groups are increased. And when the equipment has a situation that multiple actions can not be operated simultaneously, confusion is easy to occur when a worker operates the interlocking valve group to switch, and misoperation is generated. Most of the existing underground equipment is manually controlled and operated by workers, the equipment has complex structure and function, and the number of operating valves is large. If misoperation occurs, the working efficiency is reduced, and even potential safety hazards and other defects are generated.
It is apparent that the existing operating valve set still has inconvenience and defects in realizing the interlocking function, and further improvement is needed.
Disclosure of Invention
The invention aims to solve the technical problem of providing an interlocking device and a mining equipment operating valve group using the same, which solve the problems of easy misoperation and large potential safety hazard of the existing operating valve group, thereby overcoming the defects of the prior art.
In order to solve the above technical problems, the present invention discloses an interlocking device, which includes:
the middle part of the mounting plate is provided with a track window;
the sliding door plate is positioned in the track window and is in sliding fit with the track window;
the limiting connecting rod is used for connecting the sliding door plate and the mounting plate, the end part of the limiting connecting rod is connected with the sliding door plate, the middle part of the limiting connecting rod is connected with the mounting plate, and the middle part of the limiting connecting rod moves along the up-down direction along with the sliding of the sliding door plate;
the limiting bolt is used for limiting the limiting connecting rod to move up and down, the limiting bolt is arranged on the upper portion of the mounting plate, and the limiting bolt is matched with the middle portion of the limiting connecting rod.
As an improvement of the invention, the sliding door plate comprises a door plate, a handle head, a bearing pulley and a connecting pin shaft, wherein the bearing pulley is positioned at the upper edge and the lower edge of the door plate, and is connected with a track window in a matched manner, so that the door plate can automatically slide left and right through the bearing pulley; the connecting pin shaft is positioned in the middle of the door plate, and the end part of the limiting connecting rod is in clearance fit with the connecting pin shaft; the handle head is fixed in the middle of the door plate, and the handle head and the connecting pin shaft are respectively positioned on opposite sides of the door plate.
As a further improvement of the invention, the upper edge and the lower edge of the door plate are respectively provided with two bearing pulleys, and the bearing pulleys on the door plate are bilaterally symmetrical relative to the central axis of the door plate.
As a further improvement of the present invention, the bearing pulley is one of an H-type pulley, a V-type pulley or a U-type pulley.
As a further improvement of the invention, the limit connecting rod comprises a middle connecting rod and a pair of arc connecting rods, one end of each arc connecting rod is respectively hinged with one end of the middle connecting rod, and the other end of each arc connecting rod is hinged with a connecting pin shaft of the door plate.
As a further improvement of the invention, the middle part of the middle connecting rod is provided with a limit stop, the upper part of the mounting plate is provided with a longitudinally arranged limit slot, the limit stop is positioned in the limit slot, and when the limit connecting rod slides along with the door plate, the limit stop moves along the length direction of the limit slot.
As a further improvement of the invention, the limit stop is provided with a locking jack, the locking jack is connected with a limit plug in a matched manner, and when the limit plug is plugged into the locking jack, the positions of the limit connecting rod and the door plate are kept fixed.
As a further improvement of the invention, the two groups of door plates are arranged in the track window of the mounting plate side by side, when the two groups of door plates move to the two sides of the track window in opposite directions, the limiting bolt is not connected with the locking jack, and the limiting stop block moves to the lower end of the limiting slot hole; when the two groups of door plates relatively move to the middle part of the track window, the limit stop block moves to the upper end of the limit slot hole, and the limit plug pin is inserted into the locking jack.
In addition, the invention also discloses a mining equipment operation valve group, which comprises an installation shield, a single-connection control valve and a multi-connection control valve, wherein the single-connection control valve and the multi-connection control valve are both positioned in the installation shield, and the two groups of single-connection control valves are respectively positioned at two sides of the multi-connection control valve, wherein the installation shield is provided with the interlocking device, and a track window of an installation plate in the interlocking device is opposite to the single-connection control valve and the multi-connection control valve.
As a further improvement of the invention, when two groups of door plates move to two sides of the track window oppositely, the door plates are covered above the single control valve; when the two groups of door plates relatively move to the middle part of the track window, the door plates are covered above the multi-connected control valve.
With such a design, the invention has at least the following advantages:
the interlocking device can be matched with the mining equipment operation valve group for use, and the driving force is not required to be independently connected; the interlocking device and the control valve group are arranged in the mounting shield, a worker can manually move the sliding door plate of the interlocking device according to the operation requirement, when the sliding door plate moves to the middle, the limiting bolt stretches out of the limiting stop block for blocking the limiting connecting rod, at the moment, the sliding door plate is fixed, and the worker can only operate the single-connection control valves on two sides; when the sliding door plates of the interlocking device are moved to two sides, the limiting bolt is retracted, the limiting connecting rod can move downwards at the moment, and a worker can only operate the middle multi-connected control valve, so that the mechanical interlocking of the single-connected control valve and the multi-connected control valve is realized; the interlocking device is compact in structure and convenient to install, mechanical interlocking of the control valve group is achieved, operation flow is simplified, potential safety hazards are reduced, labor intensity is reduced, and working efficiency is improved.
Drawings
The foregoing is merely an overview of the present invention, and the present invention is further described in detail below with reference to the accompanying drawings and detailed description.
Fig. 1 is a schematic diagram of a mining equipment operation valve group in a control state of a single control valve according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an operation valve group of a mining device in a control state of a multi-connected control valve according to an embodiment of the present invention.
Fig. 3 is a schematic elevational view of an interlock device according to an embodiment of the present invention.
Fig. 4 is a schematic view of the reverse structure of an interlock device according to an embodiment of the present invention.
Fig. 5 is a schematic front view of a sliding door according to an embodiment of the present invention.
Fig. 6 is a schematic view showing a reverse structure of a sliding door body according to an embodiment of the present invention.
Fig. 7 is a schematic side view of a sliding door body according to an embodiment of the present invention.
Meaning of reference numerals in the drawings:
1-mounting a shield; 2-interlocking means; 201-mounting plates; 202-a track window; 203-sliding door panels; 2031-gate; 2032-a handle head; 2033-bearing pulleys; 2034-connecting pins; 204-limiting slots; 205—positive stop; 206-limiting pins; 207-limit connecting rod; 2071-intermediate linkage; 2072-arcuate connecting rod; 3-single control valve; 4-multiple control valve.
Detailed Description
Examples of embodiments of the invention are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout, or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of the two parts. It will be understood by those of ordinary skill in the art that the terms described above are in the specific sense of the present invention.
Referring to fig. 3-7, an interlocking device is specifically disclosed in the present embodiment, and the interlocking device is applicable to a mining equipment operation valve set, and includes a mounting plate 201, wherein a track window 202 is provided in the middle of the mounting plate 201; a sliding door plate 203, wherein the sliding door plate 203 is positioned in the track window 202, and the sliding door plate 203 is in sliding fit with the track window 202; the limiting connecting rod 207 is used for connecting the sliding door plate 203 with the mounting plate 201, the end part of the limiting connecting rod 207 is connected with the sliding door plate 203, the middle part of the limiting connecting rod 207 is connected with the mounting plate 201, and the middle part of the limiting connecting rod 207 moves along the up-down direction along with the sliding of the sliding door plate 203; the limiting bolt 206 is used for limiting the limiting connecting rod 207 to move up and down, the limiting bolt 206 is arranged on the upper portion of the mounting plate 201, and the limiting bolt 206 is matched with the middle portion of the limiting connecting rod 207.
Specifically, as shown in fig. 5-7, in this embodiment, the sliding door plate 203 includes a door plate 2031, a handle head 2032, a bearing pulley 2033, and a connection pin 2034, where the bearing pulley 2033 is located at the upper and lower edges of the door plate 2031, and the bearing pulley 2033 is connected with the track window 202 in a matching manner, and the door plate 2031 automatically slides left and right through the bearing pulley 2033; the connecting pin shaft 2034 is located in the middle of the door plate 2031, and the end part of the limit connecting rod 207 is in clearance fit with the connecting pin shaft 2034; the handle head 2032 is fixed in the middle of the door plate 2031, and the handle head 2032 and the connecting pin shaft 2034 are respectively located on opposite sides of the door plate 2031, in this embodiment, the handle head 2032 may be made of nylon, so as to avoid injury to hands of staff during operation.
Further, in this embodiment, two bearing pulleys 2033 are respectively disposed at the upper and lower edges of the door plate 2031, and the bearing pulleys 2033 on the door plate 2031 are symmetric with respect to the central axis of the door plate 2031. The bearing pulley 2033 may preferably be one of an H-type pulley, a V-type pulley, or a U-type pulley. When the sliding door plate 203 is located in the track window 202, the edge of the bearing pulley 2033 will be embedded into the inner frame of the track window 202, and in order to make the track window 202 and the bearing pulley 2033 more fit, the inner frame of the track window 202 may be set to match the shape of the edge of the bearing pulley 2033, so that the bearing pulley 2033 operates more smoothly.
More specifically, as shown in connection with fig. 4, the limiting link 207 in this embodiment includes a middle link 2071 and a pair of arc links 2072, one end of each arc link 2072 is respectively hinged to one end of the middle link 2071, and the other end of the arc link 2072 is hinged to a connection pin 2034 of the door panel 2031. In this embodiment, two sets of sliding door plates 203 are provided, and when the two sets of sliding door plates 203 move relatively, the two arc-shaped connecting rods 2072 are driven to swing relatively, i.e. the included angle is reduced, and meanwhile, the middle connecting rod 2071 moves upwards; when the two sets of sliding door panels 203 move away from each other, the two arc-shaped connecting rods 2072 are driven to swing away from each other, i.e. the included angle increases, and the middle connecting rod 2071 moves down. Further, as shown in fig. 3, in this embodiment, a limit stop 205 is disposed at a middle position of the intermediate link 2071, a longitudinally disposed limit slot 204 is disposed at an upper portion of the mounting plate 201, the limit stop 205 is disposed in the limit slot 204, and a locking jack is disposed on the limit stop 205. When the limit link 207 slides with the door plate 2031, the limit stop 205 will move along the length of the limit slot 204. In more detail, when the limit stop 205 moves to the lower end of the limit slot 204, the two sets of sliding door panels 203 will move to two sides of the track window 202, and the limit latch 206 and the locking jack will not have a matching relationship; when the two sets of door panels 2031 relatively move to the middle of the track window 202, the limit stop 205 will move to the upper end of the limit slot 204, and at this time, the limit plug 206 will be inserted into the locking jack, and the positions of the limit link 207 and the door panels 2031 will remain fixed.
Further, the interlocking device in this embodiment may be applied to a mining equipment operation valve set, and specifically, the mining equipment operation valve set includes a mounting shield 1, a single-link control valve 3 and a multiple-link control valve 4, where the single-link control valve 3 and the multiple-link control valve 4 are both located in the mounting shield 1, and the two sets of single-link control valves 3 are located at two sides of the multiple-link control valve 4, respectively, and the above-mentioned interlocking device 2 is installed in the mounting shield 1, and the track window 202 of the mounting plate 201 in the interlocking device is opposite to the single-link control valve 3 and the multiple-link control valve 4. Further, as shown in fig. 2, when two sets of door panels 2031 move back to two sides of the track window 202, the door panels 2031 cover the single-linked control valve 3, and the operator can only operate the middle multi-linked control valve 4; when the two sets of door plates 2031 relatively move to the middle of the track window 202, as shown in fig. 1, the door plates 2031 are covered above the multi-connected control valve 4, and an operator can perform operation control on the single-connected control valves 3 on both sides.
It should be further noted that, in this embodiment, the width setting of the sliding door plate 203, the layout space of the single-linked control valve 3 and the multiple-linked control valve 4 can ensure that the multiple-linked control valve 4 is convenient to operate when the sliding door plate 203 shields the single-linked control valve 3, and the single-linked control valve 3 is selected according to the actual requirement under the condition that the sliding door plate 203 shields the multiple-linked control valve 4.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the invention in any way, and some simple modifications, equivalent variations or modifications can be made by those skilled in the art using the teachings disclosed herein, which fall within the scope of the present invention.
Claims (10)
1. An interlock device, comprising:
the middle part of the mounting plate is provided with a track window;
the sliding door plate is positioned in the track window and is in sliding fit with the track window;
the limiting connecting rod is used for connecting the sliding door plate and the mounting plate, the end part of the limiting connecting rod is connected with the sliding door plate, the middle part of the limiting connecting rod is connected with the mounting plate, and the middle part of the limiting connecting rod moves along the up-down direction along with the sliding of the sliding door plate;
the limiting bolt is used for limiting the limiting connecting rod to move up and down, the limiting bolt is arranged on the upper portion of the mounting plate, and the limiting bolt is matched with the middle portion of the limiting connecting rod.
2. The interlocking device according to claim 1, wherein the sliding door plate comprises a door plate, a handle head, a bearing pulley and a connecting pin shaft, the bearing pulley is positioned at the upper edge and the lower edge of the door plate, and is in fit connection with the track window, and the door plate automatically slides left and right through the bearing pulley; the connecting pin shaft is positioned in the middle of the door plate, and the end part of the limiting connecting rod is in clearance fit with the connecting pin shaft; the handle head is fixed in the middle of the door plate, and the handle head and the connecting pin shaft are respectively positioned on opposite sides of the door plate.
3. The interlocking device according to claim 2, wherein the upper and lower edges of the door panel are respectively provided with two bearing pulleys, and the bearing pulleys on the door panel are bilaterally symmetrical relative to the central axis of the door panel.
4. An interlock as claimed in claim 2 or claim 3 wherein the bearing pulley is one of an H-pulley, V-pulley or U-pulley.
5. The interlock of claim 2 wherein the limit link comprises a center link and a pair of arcuate links, each arcuate link having one end pivotally connected to one end of the center link and the other end pivotally connected to the connecting pin of the door panel.
6. The interlock of claim 5 wherein the intermediate link has a limit stop at a central location thereof, the mounting plate has a longitudinally disposed limit slot at an upper portion thereof, the limit stop being positioned within the limit slot such that the limit stop will move along a length of the limit slot as the limit link slides with the door panel.
7. The interlock of claim 6 wherein the limit stop is provided with a locking receptacle, the locking receptacle being cooperatively coupled with a limit plug, the position of the limit link and door panel remaining fixed when the limit plug is inserted into the locking receptacle.
8. The interlocking device according to claim 7, wherein the door panels are provided with two groups, the two groups of door panels are arranged in the track window of the mounting plate side by side, when the two groups of door panels move to two sides of the track window in opposite directions, the limit plug pin is not connected with the locking jack, and the limit stop block moves to the lower end of the limit slot hole; when the two groups of door plates relatively move to the middle part of the track window, the limit stop block moves to the upper end of the limit slot hole, and the limit plug pin is inserted into the locking jack.
9. The mining equipment operation valve group comprises an installation shield, a single-connection control valve and a multi-connection control valve, wherein the single-connection control valve and the multi-connection control valve are both positioned in the installation shield, and the two groups of single-connection control valves are respectively positioned at two sides of the multi-connection control valve.
10. The mining equipment operation valve set according to claim 9, wherein when two sets of door panels are moved back to both sides of the track window, the door panels are covered over the single control valve; when the two groups of door plates relatively move to the middle part of the track window, the door plates are covered above the multi-connected control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311471921.1A CN117366040B (en) | 2023-11-07 | 2023-11-07 | Interlocking device and mining equipment operation valve group applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311471921.1A CN117366040B (en) | 2023-11-07 | 2023-11-07 | Interlocking device and mining equipment operation valve group applying same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117366040A true CN117366040A (en) | 2024-01-09 |
| CN117366040B CN117366040B (en) | 2024-08-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311471921.1A Active CN117366040B (en) | 2023-11-07 | 2023-11-07 | Interlocking device and mining equipment operation valve group applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117366040B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030226993A1 (en) * | 2002-06-11 | 2003-12-11 | Smc Corporation | Solenoid valve having manually-operated device |
| CN102923291A (en) * | 2012-11-21 | 2013-02-13 | 武汉船用机械有限责任公司 | Hydraulic control valve unit for rotating-vane type steering engine |
| CN208793019U (en) * | 2018-09-11 | 2019-04-26 | 山西汾西矿业（集团）有限责任公司 | Hydraulic support operates valve group hand handle limiting device |
| US20190309859A1 (en) * | 2016-07-12 | 2019-10-10 | Hangzhou Sanhua Research Institute Co., Ltd | Flow control apparatus |
| CN210370728U (en) * | 2019-08-16 | 2020-04-21 | 霍州煤电集团吕梁山煤电有限公司方山店坪煤矿 | Support operation valves stop device |
| CN111811860A (en) * | 2020-08-04 | 2020-10-23 | 中国船舶科学研究中心 | Track unfolding mechanism with automatic locking and releasing functions |
| CN113586104A (en) * | 2021-07-21 | 2021-11-02 | 山西中煤担水沟煤业有限公司 | Safety limiting device of hydraulic support control valve group and hydraulic support |
-
2023
- 2023-11-07 CN CN202311471921.1A patent/CN117366040B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030226993A1 (en) * | 2002-06-11 | 2003-12-11 | Smc Corporation | Solenoid valve having manually-operated device |
| CN102923291A (en) * | 2012-11-21 | 2013-02-13 | 武汉船用机械有限责任公司 | Hydraulic control valve unit for rotating-vane type steering engine |
| US20190309859A1 (en) * | 2016-07-12 | 2019-10-10 | Hangzhou Sanhua Research Institute Co., Ltd | Flow control apparatus |
| CN208793019U (en) * | 2018-09-11 | 2019-04-26 | 山西汾西矿业（集团）有限责任公司 | Hydraulic support operates valve group hand handle limiting device |
| CN210370728U (en) * | 2019-08-16 | 2020-04-21 | 霍州煤电集团吕梁山煤电有限公司方山店坪煤矿 | Support operation valves stop device |
| CN111811860A (en) * | 2020-08-04 | 2020-10-23 | 中国船舶科学研究中心 | Track unfolding mechanism with automatic locking and releasing functions |
| CN113586104A (en) * | 2021-07-21 | 2021-11-02 | 山西中煤担水沟煤业有限公司 | Safety limiting device of hydraulic support control valve group and hydraulic support |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117366040B (en) | 2024-08-23 |
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Address after: 065000 Dachang Chaobaihe Industrial Zone, Langfang City, Hebei Province Applicant after: Hebei Jinglong Intelligent Equipment Co.,Ltd. Address before: 065000 Dachang Chaobaihe Industrial Zone, Langfang City, Hebei Province Applicant before: LANGFANG JINGLONG HEAVY MACHINERY Co.,Ltd. |
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