CN119268360A - A sintering machine trolley reverse installation device and installation method - Google Patents
A sintering machine trolley reverse installation device and installation method Download PDFInfo
- Publication number
- CN119268360A CN119268360A CN202411472927.5A CN202411472927A CN119268360A CN 119268360 A CN119268360 A CN 119268360A CN 202411472927 A CN202411472927 A CN 202411472927A CN 119268360 A CN119268360 A CN 119268360A
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- trolley
- head
- rail
- sintering machine
- star wheel
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- 238000005245 sintering Methods 0.000 title claims abstract description 82
- 238000009434 installation Methods 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 80
- 238000012423 maintenance Methods 0.000 claims description 17
- 238000010276 construction Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 11
- 238000004804 winding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000009770 conventional sintering Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
- F27B21/02—Sintering grates or tables
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
本发明提供一种烧结机台车反向安装装置及安装方法，该装置包括烧结机、行车机构和卷扬机构，烧结机包括已安装完成的头部驱动装置、头部星轮、头部弯轨、上部轨道、尾部星轮、尾部弯轨和下部轨道；头部驱动装置带动头部星轮反向转动；行车机构架设于所述烧结机上方；卷扬机构设于烧结机头部前方，与上部轨道的中心线对齐。本发明以烧结机的头部驱动装置为动力，利用设备自身的头部星轮、头部弯轨、上部轨道、尾部星轮、尾部弯轨和下部轨道，与卷扬机构和行车机构配合，实现了台车的反向安装；整体操作简单、快速，安全性高、易于控制；可以不影响烧结机其它设备安装，大大缩短台车的安装的时间，极大地提高施工效率，降低了台车损坏的风险。
The present invention provides a sintering machine trolley reverse installation device and installation method, the device includes a sintering machine, a traveling mechanism and a hoisting mechanism, the sintering machine includes a head driving device, a head star wheel, a head curved rail, an upper rail, a tail star wheel, a tail curved rail and a lower rail that have been installed; the head driving device drives the head star wheel to rotate in the opposite direction; the traveling mechanism is erected above the sintering machine; the hoisting mechanism is arranged in front of the sintering machine head and is aligned with the center line of the upper rail. The present invention uses the head driving device of the sintering machine as the power, and utilizes the head star wheel, head curved rail, upper rail, tail star wheel, tail curved rail and lower rail of the equipment itself, in cooperation with the hoisting mechanism and the traveling mechanism, to realize the reverse installation of the trolley; the overall operation is simple and fast, with high safety and easy control; it can not affect the installation of other equipment of the sintering machine, greatly shorten the installation time of the trolley, greatly improve the construction efficiency, and reduce the risk of damage to the trolley.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to a reverse installation device and an installation method for a sintering machine trolley.
Background
The sintering machine consists of a frame, a head driving device, a head star wheel, a head bent rail, an upper rail, a tail star wheel, a tail bent rail, a lower rail, a feeding system, an ignition system, an air box, a sintering trolley and the like. The sintering trolley is main operation equipment of the sintering machine, and has the main effects of conveying a sintering mixture to an ignition furnace through an upper horizontal rail for ignition, then conveying a sintered block to a sintering tail guide box, returning the sintered block to a head wheel part through a lower horizontal rail after turning, and realizing the whole sintering circulation work by continuous circular motion along an elliptical rail. Therefore, the quality of the installation quality of the sintering machine trolley and the speed of the installation progress directly influence the production operation of the sintering production line.
The conventional sintering machine trolley is installed by using a factory crane to firstly install part of trolley on a lower track before the frame, an upper track and a lower track are installed and a tail star wheel is installed, then installing the trolley of the upper track after the head and tail equipment of the sintering machine are installed, or by using a forward installation method, firstly installing and checking the sintering equipment, installing the sintering trolley from the upper track by using a factory crane handle to enable the sintering trolley to overturn the lower track from a tail bent track, and because the tail star wheel is not provided with a driving device, when the two methods are adopted for installation, the trolley is meshed with the tail star wheel and then downwards overturned under the action of self gravity, namely the trolley slides, the trolley can collide with the trolley which is arranged on the lower track, and safety accidents or equipment damage are easy to cause.
Disclosure of Invention
In order to solve the technical problems, the invention provides a reverse installation device and an installation method for a trolley of a sintering machine, which realize rapid and nondestructive installation of the trolley and improve the installation efficiency of the trolley.
The technical scheme adopted by the invention is that the reverse installation device of the sintering machine trolley comprises:
the sintering machine comprises a head driving device, a head star wheel, a head bent rail, an upper rail, a tail star wheel, a tail bent rail and a lower rail which are installed, wherein the head driving device drives the head star wheel to reversely rotate;
the travelling mechanism is erected above the sintering machine and is used for placing the trolley on the upper track;
and the hoisting mechanism is arranged in front of the head part of the sintering machine, aligned with the central line of the upper rail and used for connecting the trolley on the upper rail.
Further, a plurality of groups of trolleys are arranged on the upper track, each group of trolleys are attached to form a trolley group, and a traction rope of the hoisting mechanism is connected with the trolley group closest to the head curved track.
Further, the haulage rope is connected to the last of the trolley groups closest to the headrail.
Further, the sintering machine head is provided with a maintenance platform corresponding to the height of the upper track, and the hoisting mechanism is detachably arranged on the maintenance platform.
Further, the traction rope extends along the horizontal direction and is higher than the head star wheel.
Further, a hook is arranged at the free end of the traction rope and connected to the rear side plate of the last trolley of the trolley set.
The reverse installation method of the sintering machine trolley adopts the reverse installation device of the sintering machine trolley, and comprises the following steps:
assembling a head driving device, a head star wheel, a head bent rail, an upper rail, a tail star wheel, a tail bent rail and a lower rail of the sintering machine;
placing a plurality of trolleys on the upper rail through a travelling mechanism, and installing the trolleys on the upper rail;
A hoisting mechanism is arranged on a maintenance platform corresponding to the upper track, and a traction rope of the hoisting mechanism is fixed on the last trolley of the trolley group closest to the head curved track on the horizontal track;
Starting the hoisting mechanism, and driving the trolley group closest to the head bent rail to move towards the head bent rail through the traction rope;
When a first trolley of the trolley set closest to the head curved rail enters the head curved rail, stopping running the hoisting mechanism to enable the clamping wheel of the first trolley to be meshed with the head star wheel;
Operating the head driving device to enable the head star wheel to reversely rotate, and stopping operating the head driving device after driving a first trolley to move along the head curved rail for a set distance;
and alternately operating the head driving device and the hoisting mechanism until the last trolley of the trolley set closest to the head curved rail enters the head curved rail, unwinding the traction rope, operating the head star wheel to reversely rotate, and driving the last trolley to enter the lower rail.
Further, the traction rope is connected to the next trolley group, and the hoisting mechanism and the head driving device are operated alternately until the trolley is full of the lower rail.
Further, after the trolley is fully distributed on the lower track, the hoisting mechanism and the head driving device continue to alternately operate until the trolley is installed on the head curved track, the lower track and the tail curved track.
Further, the trolley is mounted on the upper rail one by one through the travelling mechanism, and the empty positions of the upper rail are fully distributed.
The invention has the advantages and positive effects that the head driving device of the sintering machine is used as power, the head star wheel, the head bent rail, the upper rail, the tail star wheel, the tail bent rail and the lower rail of the equipment are matched with the hoisting mechanism and the travelling mechanism, so that the reverse installation of the trolley is realized, the whole operation is simple and quick, the safety is high, the control is easy, the installation of other equipment of the sintering machine is not influenced, the installation time of the trolley is greatly shortened, the installation efficiency of the trolley is greatly improved, and the risk of damage of the trolley is reduced.
Drawings
FIG. 1 is a schematic view of a reverse installation device of a sintering pallet of the present invention;
FIG. 2 is a schematic diagram of a reverse installation method step S2 of the sintering pallet of the present invention;
FIG. 3 is a schematic view of a reverse installation method step S4 of the sintering pallet of the present invention;
FIG. 4 is a schematic view of a reverse installation method step S7 of the sintering pallet of the present invention;
FIG. 5 is a schematic view of a reverse installation method step S8 of the sintering pallet of the present invention;
FIG. 6 is a schematic diagram of a reverse installation method step S9 of the sintering pallet of the present invention;
fig. 7 is a schematic diagram of a reverse installation method step S10 of the sintering pallet of the present invention.
In the figure:
1. sintering machine frame 2, head bending rail 3 and head star wheel
4. Head driving device 5, upper rail 6, lower rail
7. Tail star wheel 8, tail bent rail 9 and maintenance platform
10. Hoisting mechanism 101, traction rope 11 and trolley
12. Driving mechanism
Detailed Description
Embodiments of the present invention are described below with reference to the accompanying drawings.
As shown in fig. 1, the invention relates to a reverse installation device of a trolley of a sintering machine, which comprises the sintering machine, a trolley mechanism 12 and a winding mechanism 10, wherein the sintering machine comprises a head driving device 4, a head star wheel 3, a head bent rail 2, an upper rail 5, a tail star wheel 7, a tail bent rail 8 and a lower rail 6 which are installed, the head driving device 4 drives the head star wheel 3 to reversely rotate, the trolley mechanism 12 is arranged above the sintering machine and used for placing a trolley 11 on the upper rail 5, and the winding mechanism 10 is arranged in front of the head of the sintering machine and aligned with the central line of the upper rail 5 and used for connecting the trolley 11 on the upper rail 5.
The sintering machine comprises a sintering machine frame 1, a head driving device 4, a head star wheel 3, a head bent rail 2, an upper horizontal rail, a tail star wheel 7, a tail bent rail 8, a lower horizontal rail, a feeding system, an ignition system, a bellows, a sealing cover and the like, wherein the head bent rail 2, the upper rail 5, the tail bent rail 8 and the lower rail 6 are sequentially connected to form an elliptical rail, a plurality of trolleys 11 are clamped with the rail, when the sintering machine is used, the head driving device 4 enables the head star wheel 3 to rotate, the trolleys 11 meshed with the head star wheel 3 are driven to move towards the upper rail 5 along the head bent rail 2, and then the trolleys 11 on the upper rail 5 are pushed to continuously and circularly repeatedly move along the tail bent rail 8-the lower rail 6-the movement track of the head bent rail 2.
According to the application, the head driving device 4, the head star wheel 3, the head curved rail 2, the upper rail 5, the tail star wheel 7, the tail curved rail 8 and the lower rail 6 on the sintering machine are matched with the hoisting mechanism 10 and the travelling mechanism 12 to realize the installation of the trolley 11, the installation states of other parts of the sintering machine are not limited in the process, and the installation of the other parts of the sintering machine can be completed before the installation of the trolley 11 or after the installation of the trolley 11 according to the requirements, so that the installation of the trolley 11 does not influence other equipment, and the installation efficiency of the equipment is greatly improved.
Through utilizing hoist mechanism 10 and head drive arrangement 4's cooperation for trolley 11 can get into lower part track 6 along head curved rail 2, realized the reverse installation of trolley 11, the trolley 11 gets into lower part horizontal track from afterbody curved rail 8 in the relative prior art, can not cause trolley 11 swift current car phenomenon, avoided taking place the collision between the trolley 11 of successively installing, cause equipment damage, installation easy operation simultaneously, fast, safe, reliable, the practicality is strong, greatly improved the installation effectiveness of trolley 11.
Further, a plurality of trolley sets 11 are mounted on the upper rail 5, each trolley set 11 is attached to form a trolley set, and a hauling rope 101 of a hoisting mechanism 10 is connected to the trolley set closest to the head bending rail 2.
Specifically, each group of trolleys 11 are mutually attached, adjacent trolley groups can be attached or can be arranged at intervals, the trolley group closest to the head bent rail 2 is driven to move towards the head bent rail 2 by the traction rope 101 of the hoisting mechanism 10, after the trolley group is installed, the traction rope 101 of the hoisting mechanism 10 is connected with the trolley group closest to the head bent rail 2 in the rest of trolley groups, so that the trolley groups arranged in the direction from the head bent rail 2 to the tail bent rail 8 are sequentially installed, and the installation efficiency of the trolleys 11 is improved. Preferably, the number of the trolleys 11 included in each trolley group may be cooperatively set according to the model of the hoisting mechanism 10 to improve the installation efficiency of the trolleys 11.
Further, the traction rope 101 is connected to the last of the trolley 11 of the trolley group closest to the head rail 2. When the trolley is used, the hoisting mechanism 10 is started to drive the trolley set to approach to the direction of the head bent rail 2, when the first trolley 11 of the trolley set enters the head bent rail 2, the hoisting mechanism 10 is stopped, the head driving device 4 is started, the first trolley 11 is driven to enter the lower rail 6 along the head bent rail 2 through the rotation of the head star wheel 3, the hoisting mechanism 10 is started again to repeat the operation for installing the next trolley 11 until the last trolley 11 enters the head bent rail 2, the traction rope 101 is detached, and then the last trolley 11 is installed, so that the rapid installation of the trolley set is realized.
Further, the sintering machine head is provided with a maintenance platform 9 corresponding to the height of the upper rail 5, and a hoisting mechanism 10 is detachably arranged on the maintenance platform 9. Specifically, the maintenance platform 9 is a matched device of the sintering machine and is used for overhauling the sintering machine, in the application, the maintenance platform 9 is arranged corresponding to the height of the upper rail 5, and the construction of the maintenance platform 9 is completed before the trolley 11 is installed, so that the hoisting mechanism 10 is installed, the hoisting mechanism 10 is positioned on an extension line of the center of the sintering machine, the traction rope 101 can extend to the trolley 11 installed on the upper rail 5 along the horizontal direction, the trolley 11 is pulled to move conveniently without affecting other equipment, preferably, a connecting piece for installing the hoisting mechanism 10 is pre-embedded in the maintenance platform 9, so that the hoisting mechanism 10 can be conveniently and stably fixed on the maintenance platform 9, and the hoisting mechanism 10 can be removed after the trolley 11 is completely installed, so that the normal use of the maintenance platform 9 is not affected.
In a specific embodiment, a maintenance platform 9 is provided in front of the sintering machine head, corresponding to the height of the upper rail 5 and the lower rail 6, respectively.
Further, the traction rope 101 extends along the horizontal direction and is higher than the head star wheel 3, so as to ensure that the hoisting mechanism 10 and the head star wheel 3 can respectively and independently operate, and potential safety hazards caused by mutual influence are avoided.
Further, the free end of the traction rope 101 is provided with a hook, and the hook is connected to the rear side plate of the last trolley 11, so that the traction rope 101 can be conveniently connected with the trolley 11 and detached from the trolley 11, a plurality of trolley groups are sequentially and quickly connected, and the installation efficiency of the trolley 11 is improved.
The application also provides a reverse installation method of the sintering machine trolley 11, which adopts the reverse installation device of the sintering machine trolley 11 and specifically comprises the following steps:
S1, as shown in FIG. 1, the head driving device 4, the head star wheel 3, the head bent rail 2, the upper rail 5, the tail star wheel 7, the tail bent rail 8 and the lower rail 6 of the sintering machine are assembled, normal operation of the head driving device 4, the head star wheel 3 and the tail star wheel 7 is ensured, meanwhile, the travelling mechanism 12 is erected above the sintering machine, and travelling of the travelling mechanism 12 can move along the direction of the upper rail 5.
In a specific embodiment, the feeding system, the ignition system, the bellows, the sealing cover and other components of the sintering machine are synchronously installed.
S2, as shown in FIG. 2, a plurality of trolleys 11 are placed on the upper rail 5 through a travelling mechanism 12, and the trolleys 11 are mounted on the upper rail 5;
Specifically, a plurality of trolleys 11 form a trolley group, the same trolley groups 11 are tightly attached, the trolley groups or part of trolley groups can be fully distributed on the upper rail 5, the trolleys 11 on the upper rail 5 are gradually reduced along with the gradual installation of the trolleys 11 one by one, and a travelling mechanism 12 is used for lifting new trolleys 11 to the upper rail 5 one by one and continuously supplementing the new trolleys 11 to form the trolley groups so as to facilitate continuous operation.
S3, installing a hoisting mechanism 10 on a maintenance platform 9 corresponding to the upper rail 5, and fixing a traction rope 101 of the hoisting mechanism 10 on the last trolley 11 of the trolley group closest to the head bending rail 2 on the horizontal rail;
Specifically, the hoisting mechanism 10 is mounted on the central extension line of the sintering machine, the hauling rope 101 of the hoisting mechanism 10 extends along the horizontal direction, and the hook at the end part of the hauling rope 101 is connected to the rear side plate of the last trolley 11 of the trolley group closest to the head bending rail 2;
in a specific embodiment, the trolley set comprises 5 trolleys 11, and the traction ropes 101 are attached to the 5 th trolley 11 of one trolley set at a time.
S4, as shown in FIG. 3, the hoisting mechanism 10 is started, and the trolley group closest to the head bending rail 2 is driven to move towards the head bending rail 2 by the traction rope 101, preferably, the moving speed of the trolley group is not excessively high, so that the installation of the trolley 11 is accurately controlled.
S5, when a first trolley 11 of the trolley set closest to the head bent rail 2 enters the head bent rail 2, stopping running the hoisting mechanism 10 to enable the clamping wheels of the first trolley 11 to be meshed with the head star wheel 3, and specifically, when each clamping ring on two sides of the front part of the first trolley 11 enters one tooth slot of the toothed plates on two sides of the head star wheel 3, stopping running the hoisting mechanism 10, wherein other trolleys 11 of the trolley set are all located on the upper rail 5.
S6, operating the head driving device 4 to enable the head star wheel 3 to reversely rotate, driving the first trolley 11 to move a set distance along the head curved rail 2, and then stopping operating the head star wheel 3;
Specifically, the set distance may be set as required, and may be set such that when the first trolley 11 leaves its initial position to enter the head bending rail 2, the head bending rail 2 has a space capable of accommodating another trolley 11, the head driving device 4 is stopped, or when the first trolley 11 leaves the head bending rail 2 and enters the lower rail 6, the head driving device 4 is stopped, so as to ensure that the head bending rail 2 has a sufficient space to accommodate another trolley 11.
S7, operating the hoisting mechanism 10, stopping operating the hoisting mechanism 10 when the second trolley 11 enters the head curved rail 2, alternately operating the head driving device 4 and the hoisting mechanism 10 until the last trolley 11 of the trolley group closest to the head curved rail 2 enters the head curved rail 2, unwinding the traction rope 101, and operating the head driving device 4 to enable the head star wheel 3 to reversely rotate so as to drive the last trolley 11 to enter the lower rail 6.
Specifically, after the traction rope 101 is unwound, the winding mechanism 10 is operated reversely, so that the traction rope 101 is wound up to a position corresponding to the head bending rail 2, and then the head driving device 4 is operated, so that the safety operation of the last trolley 11 is ensured. In a specific embodiment, as shown in fig. 4, the trolley set comprises 5 trolleys 11, wherein the 5 trolleys 11 have all entered the interior of the head rail 2.
S8, as shown in fig. 5, the traction rope 101 is connected to the next trolley group, and the hoisting mechanism 10 and the head driving device 4 are alternately operated until the trolley 11 is fully distributed on the lower rail 6.
Specifically, when the next group of trolleys 11 are installed, the upper group of trolleys 11 enter the lower track 6 along the head curved track 2 along with the rotation of the head star wheel 3, specifically, after the first trolley 11 of the upper group of trolleys 11 enters the lower track 6, the lower trolley 11 also enters the lower track 6 under the driving of the head star wheel 3 and contacts with the first step trolley 11 to push the first step trolley 11 to travel along the lower track 6, and accordingly the upper group of trolleys 11 completely enter the lower track 6, then the next group of trolleys 11 contact with the upper group of trolleys 11 and push the upper group of trolleys 11 to travel along the lower track 6, the adjacent trolleys 11 are in close contact with each other, and the trolleys 11 are fully distributed on the lower track 6 under the pushing of the head star wheel 3 and the adjacent trolleys 11.
S9, as shown in fig. 6, after the trolley 11 is fully distributed on the lower rail 6, the hoisting mechanism 10 and the head driving device 4 continue to alternately operate until the trolley 11 is mounted on the head curved rail 2, the lower rail 6 and the tail curved rail 8. At the moment, the head curved rail 2, the lower rail 6 and the tail curved rail 8 are uniformly distributed with trolley 11, and the trolley 11 are in close contact with each other, while the upper rail 5 is not fully distributed with trolley 11.
Specifically, the winding mechanism 10 and the head driving device 4 are repeatedly and alternately operated until a part of the trolley 11 enters the upper bent rail through the tail bent rail 8, and then the operation is stopped, so that the trolley 11 is fully distributed on the tail bent rail 8.
S10, as shown in FIG. 7, the trolleys 11 are mounted on the upper rail 5 one by one through the travelling mechanism 12, and the empty positions of the upper rail 5 are fully distributed, and at this time, the trolleys 11 are fully mounted on the upper rail 5, the head bent rail 2, the lower rail 6 and the tail bent rail 8, so that the mounting of all the trolleys 11 is completed.
The invention uses the head driving device 4 of the sintering machine as power, utilizes the head star wheel 3, the head bent rail 2, the upper rail 5, the tail star wheel 7, the tail bent rail 8 and the lower rail 6 of the equipment to be matched with the hoisting mechanism 10 and the travelling mechanism 12, realizes the reverse installation of the trolley 11, has simple and quick integral operation, high safety and easy control, can not influence the installation of other equipment of the sintering machine, greatly shortens the installation time of the trolley 11, greatly improves the construction efficiency and reduces the damage risk of the trolley 11.
The foregoing describes the embodiments of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411472927.5A CN119268360A (en) | 2024-10-22 | 2024-10-22 | A sintering machine trolley reverse installation device and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411472927.5A CN119268360A (en) | 2024-10-22 | 2024-10-22 | A sintering machine trolley reverse installation device and installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119268360A true CN119268360A (en) | 2025-01-07 |
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ID=94116235
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411472927.5A Pending CN119268360A (en) | 2024-10-22 | 2024-10-22 | A sintering machine trolley reverse installation device and installation method |
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| Country | Link |
|---|---|
| CN (1) | CN119268360A (en) |
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2024
- 2024-10-22 CN CN202411472927.5A patent/CN119268360A/en active Pending
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