CN111862528A - Single-motor multi-drive safety warning device - Google Patents
Single-motor multi-drive safety warning device Download PDFInfo
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- CN111862528A CN111862528A CN202010901042.8A CN202010901042A CN111862528A CN 111862528 A CN111862528 A CN 111862528A CN 202010901042 A CN202010901042 A CN 202010901042A CN 111862528 A CN111862528 A CN 111862528A
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- motor
- warning
- warning device
- worm
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- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims 1
- 238000010008 shearing Methods 0.000 description 10
- 238000012423 maintenance Methods 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 241000463219 Epitheca Species 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/108—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction clutches
- H02K7/1085—Magnetically influenced friction clutches
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
- H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
- H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a single-motor multi-drive safety warning device which comprises a power part and a plurality of warning parts, wherein the power part comprises a motor, the number of the motors is one, the motor is a forward and reverse motor, an output shaft of the motor is in driving connection with a worm, a plurality of worm wheels are distributed around the worm, each worm wheel is respectively meshed with the worm, a connecting column is arranged on each worm wheel, the forward and reverse rotation of the motor drives the connecting columns to rotate forward and backward, the number of the warning parts is matched with that of the worm wheels, the warning parts are in a shear type structure, a lifting driving part of each warning part is respectively connected with each connecting column, and the forward and reverse rotation of each connecting column respectively drives each warning part to lift. The single-motor multi-drive safety warning device disclosed by the invention can utilize one motor to drive a plurality of warning pieces to lift, so that the motor cost and the field space are saved, the arrangement of the warning pieces is facilitated, and the single-motor multi-drive safety warning device has strong practicability in the technical field of safety warning.
Description
Technical Field
The invention relates to the technical field of safety warning, in particular to a single-motor multi-drive safety warning device.
Background
When the transformer substation overhauls, the planning time is switching operation start time usually, and after switching operation is accomplished, need spend the setting that the certain time carries out the warning piece, warning piece can warn near personnel and have danger and do not close to. The greater the job site is, the more the quantity of warning piece that needs is also more, and the warning piece installation and demolish work load just more, have influenced maintenance efficiency, and the driving motor quantity that needs is also many, is unfavorable for the arrangement on scene and practices thrift the cost. In the prior art, each warning piece needs to be placed and controlled independently, so that the arrangement workload of the warning pieces is large, and a plurality of motors are required for driving.
The patent with the publication number of CN208455521U discloses a safety warning ware for electric power construction, its structure includes the attention device main part, places platform, elevating gear, bracing piece, slipmat, swinging arms, down tube, cover frame, stand, it welds in stand bottom surface border to place platform bottom surface central authorities, attention device main part bottom surface both ends are through bolt-up connection place platform top surface border, bracing piece top surface border gomphosis threaded connection cover frame bottom surface central authorities. This attention device can be according to the on-the-spot demand condition adjustment height, but the regulation of this attention device height relies on the manpower, and it wastes time and energy to adjust, is unfavorable for promoting maintenance efficiency.
The utility model discloses a CN208351870U discloses an electric power overhauls uses safety warning device, relate to electric power apparatus technical field, the on-line screen storage device comprises a base, flexible pillar, the mount, the warning board, the dog, fastening bolt, the reflection of light strip, the speaker, a battery, the balancing weight, gyro wheel and LED banks, be provided with the battery in the base, the inside below of base is provided with the balancing weight, the bottom of base is provided with the gyro wheel, the base top is provided with the speaker by the right position, base top central authorities are provided with flexible pillar, flexible pillar upper end is provided with the mount, the position is provided with the dog respectively about the front side of mount, the device is bulky, can not go up and down and the volume is reduced, carry the degree of difficulty big, need put.
Disclosure of Invention
In view of this, the present invention provides a single-motor multi-drive safety warning device, which can utilize one motor to drive a plurality of warning members to ascend and descend, thereby saving motor resources and site resources.
In order to achieve the purpose, the invention adopts the following technical scheme:
a single-motor multi-drive safety warning device comprises:
the power part comprises a motor, the number of the motors is one, the motors are positive and negative rotating motors, an output shaft of each motor is connected with a worm in a driving mode, a plurality of worm wheels are distributed around the worm, each worm wheel is respectively meshed with the worm, each worm wheel is provided with a connecting column, and the positive and negative rotation of the motors drives the connecting columns to rotate positively and negatively;
the number of the warning pieces is matched with that of the worm gears, the warning pieces are of a shear type structure, the lifting driving part of each warning piece is connected with each connecting column respectively, and the forward and reverse rotation of each connecting column drives each warning piece to lift respectively.
Furthermore, every warning piece includes sill bar and ejector pin, is provided with the spout on sill bar and the ejector pin respectively, is provided with first shearing arm and second shearing arm between sill bar and the ejector pin, and first shearing arm and second shearing arm rotate to be connected, and first shearing arm bottom is provided with the sliding shaft, and the sliding shaft can slide in the spout.
Further, the lift drive portion is including storing up a silk section of thick bamboo, and the one end of storing up a silk section of thick bamboo can be dismantled with the spliced pole and be connected, and the spliced pole is just reversing can drive and store up a silk section of thick bamboo and just reverse, stores up the second rope that is connected with first rope and on the silk section of thick bamboo, and the other end and the sliding shaft of first rope are connected, and the other end of second rope is walked around the fixed pulley and the sliding shaft that set up on the sill bar and is connected, stores up a silk section of thick bamboo and just reversing and can make first rope and second rope pull.
Furthermore, the lifting driving part also comprises an electromagnetic clutch, one end of the electromagnetic clutch is connected with the connecting column, and the other end of the electromagnetic clutch is connected with the wire storage cylinder.
Furthermore, the electromagnetic clutch is a remote control electromagnetic clutch.
Furthermore, the motor is a remote control motor, and the starting, the stopping and the forward and reverse rotation of the motor can be controlled remotely.
Further, the power part still includes power part inferior valve and power part epitheca, and the power part inferior valve sets up in the power part bottom, and the power part epitheca sets up at the power part top, and the spliced pole is located outside power part epitheca and the power part inferior valve.
Furthermore, the power part upper shell and the power part lower shell are hermetically connected and are made of stainless steel.
Further, the number of the warning pieces is 4.
Furthermore, an acousto-optic warning device is arranged on the warning piece.
Before transformer substation overhauls, the field work personnel arrange the warning piece according to the scope of overhauing, can consider the source instrument when arranging the warning piece and supply with the condition, select current warning piece to arrange, generally speaking, the warning piece that overhauls the scene most often has rail warning and warning stake warning, the warning of rail with enclose keep off effectually, but the rail is bulky, the transportation of not being convenient for, and the rail is emptyd easily, be not convenient for fix. The warning stake generally is single pile body, and it has the warning sign to paste at the top, and warning effect is poor, and need set up a plurality of warning stakes one by one around overhauing the scene, generally can not carry out the volume because of the warning stake and reduce, in order not to occupy the place, in stage work completion back, need will warn the stake and receive, arrange again when needing, waste time and energy relatively.
The invention designs a single-motor multi-drive safety warning device based on long-term transformer substation maintenance work experience and engineering design experience and aiming at improving maintenance efficiency and reducing cost, overcomes energy transmission obstacles in the lifting process of a warning piece, converts the rotation of an output shaft of a motor into the traction force of a sliding shaft of the warning piece, drives the lifting of a plurality of warning pieces by utilizing one motor, improves the arrangement efficiency of the warning pieces and reduces the number of the motors.
Compared with the prior art, the single-motor multi-drive safety warning device provided by the invention has the following beneficial effects:
1. the invention provides a single-motor multi-drive safety warning device which comprises a power part and a plurality of warning parts, wherein the power part comprises a forward and reverse rotating motor, an output shaft of the motor is connected with a worm in a driving mode, a plurality of worm wheels are distributed around the worm, each worm wheel is respectively connected with the worm in a meshing mode, and each worm wheel is provided with a connecting column. The motor rotates forwards and backwards to drive the connecting column to rotate forwards and backwards, the worm gear converts the rotation of the output shaft of the motor into the rotation of the connecting column in the vertical direction, the worm gear drives stably, and the noise is low. The number of the warning pieces is matched with that of the worm gears, the warning pieces are of a shear type structure, the lifting driving part of each warning piece is connected with each connecting column respectively, and the forward and backward rotation of each connecting column drives each warning piece to lift respectively. The single-motor multi-drive safety warning device provided by the invention can drive the lifting of the warning pieces by only one motor, so that the motor resource is saved, and the lifting warning pieces are convenient to transport and save the site resource.
2. The invention provides a single-motor multi-drive safety warning device, wherein a lifting driving part comprises a wire storage barrel, one end of the wire storage barrel is detachably connected with a connecting column, a first rope and a second rope are connected onto the wire storage barrel, the other end of the first rope is connected with a sliding shaft, the other end of the second rope is connected with the sliding shaft by bypassing a fixed pulley arranged on a bottom rod, the wire storage barrel rotates forwards and backwards to enable the first rope and the second rope to pull the sliding shaft to slide in a sliding chute to drive a first shear arm to slide in the sliding chute, and the first shear arm is rotatably connected with the second shear arm to drive the second shear arm to slide in the sliding chute to finish the lifting of a warning piece.
3. The single-motor multi-drive safety warning device provided by the invention has the advantages that the lifting driving part also comprises the electromagnetic clutch, one end of the electromagnetic clutch is connected with the connecting column, the other end of the electromagnetic clutch is connected with the wire storage barrel, when the electromagnetic clutch is sucked, the connecting column and the wire storage barrel are connected into a whole, the wire storage barrel rotates along with the connecting column to complete the lifting of the warning part, when only part of the warning part is required to be lifted, the corresponding part of the electromagnetic clutch can be sucked, and the rest of the electromagnetic clutches are disconnected, so that the warning part is controlled independently.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a single-motor multi-drive safety warning device provided by the invention;
FIG. 2 is a schematic structural view of the power member shown in FIG. 1;
FIG. 3 is a schematic view of the internal structure of the power member shown in FIG. 1;
fig. 4 is a schematic structural view of the warning member shown in fig. 1.
In the figure, 10, a single-motor multi-drive safety warning device 100, a power part 110, a motor 120, a worm 130, a worm wheel 140, a connecting column 150, a power part lower shell 160, a power part upper shell 200, a warning part 210, a lifting driving part 211, a wire storage barrel 212, a first rope 213, a second rope 220, a bottom rod 230, a top rod 240, a first shear arm 241, a sliding shaft 250 and a second shear arm.
Detailed Description
The present invention will be further described with reference to the following examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a single-motor multi-drive safety warning device 10 according to the present invention; the single-motor multi-drive safety warning device 10 provided by the invention comprises a power part 100 and a plurality of warning parts 200.
Referring to fig. 2 and 3, fig. 2 is a schematic structural view of the power member 100 shown in fig. 1; fig. 3 is a schematic view of the internal structure of the power member 100 shown in fig. 1. The power part 100 comprises a motor 110, the number of the motors 110 is one, the motors 110 are positive and negative rotation motors, an output shaft of the motor 110 is in driving connection with a worm 120, a plurality of worm wheels 130 are distributed around the worm 120, each worm wheel 130 is respectively meshed with the worm 120, each worm wheel 130 is provided with a connecting column 140, and the positive and negative rotation of the motors 110 drives the connecting columns 140 to rotate positively and negatively. The worm wheel 130 and the worm 120 convert the rotation of the output shaft of the motor 110 into the rotation of the connecting column 140 in the vertical direction, and the transmission ratio is large, the transmission is stable, and the noise is low.
The power part 100 further comprises a power part lower shell 150 and a power part upper shell 160, the power part lower shell 150 is arranged at the bottom of the power part 100, the power part upper shell 160 is arranged at the top of the power part 100, and the power part upper shell 160 and the power part lower shell 150 are hermetically connected, so that safety protection is provided for the motor 110, the worm wheel 130 and the worm 120. The power element upper shell 160 and the power element lower shell 150 are made of stainless steel, and are firm and durable. The connecting column 140 is located outside the power element upper casing 160 and the power element lower casing 150, and is used for rotatably driving the warning element 200.
Referring to fig. 4, fig. 4 is a schematic structural view of the warning member 200 shown in fig. 1. The safety warning device 10 comprises a plurality of warning pieces 200, the number of the warning pieces 200 is matched with the number of the worm gears 130 and the connecting columns 140, that is, each worm gear 130 is connected with one connecting column 140, and each connecting column 140 corresponds to each warning piece 200. The warning pieces 200 are of a scissor-type structure, each warning piece 200 comprises a lifting driving portion 210, each lifting driving portion 210 is connected with each connecting column 140, and each connecting column 140 rotates forwards and backwards to drive each warning piece 200 to lift.
In order to enable the connecting column 140 to drive the warning members 200 better, each warning member 200 comprises a bottom rod 220 and a top rod 230, sliding grooves are respectively formed in the bottom rod 220 and the top rod 230, a first shear arm 240 and a second shear arm 250 are arranged between the bottom rod 220 and the top rod 230, and the first shear arm 240 and the second shear arm 250 are rotatably connected at the center of the first shear arm 240. In some particular embodiments, first shear arm 240 and second shear arm 250 are connected by a pin. The bottom of the first shear arm 240 is provided with a sliding shaft 241, the sliding shaft 241 is matched with the sliding slot, and the sliding shaft 241 can slide in the sliding slot. The sliding shaft 241 slides to drive the first shearing arm 240 to slide, and because the first shearing arm 240 is rotatably connected with the second shearing arm 250, the first shearing arm 240 slides to drive the second shearing arm 250 to slide, so that the warning member 200 can be lifted.
In order to drive the sliding shaft 241 to slide in the first scissor arm 240, in some preferred embodiments, the lifting drive 210 comprises a wire storage barrel 211, and one end of the wire storage barrel 211 is detachably connected to the connecting column 140. The connecting column 140 rotates forward and backward to drive the silk storage cylinder 211 to rotate forward and backward, the silk storage cylinder 211 is connected with a first rope 212 and a second rope 213, the other end of the first rope 212 is connected with the sliding shaft 241, the other end of the second rope 213 is connected with the sliding shaft 241 by bypassing a fixed pulley arranged on the bottom rod 220, and the fixed pulley can play a role in changing the direction of traction force in the invention. The forward and reverse rotation of the wire storage barrel 211 can cause the first rope 212 and the second rope 213 to pull the sliding shaft 241 to slide in the sliding groove.
In order to adapt to some working conditions that only part of the warning member 200 needs to be lifted, in some preferred embodiments, the lifting driving part 210 further comprises an electromagnetic clutch, one end of the electromagnetic clutch is connected with the connecting column 140, and the other end of the electromagnetic clutch is connected with the wire storage barrel 211. When the electromagnetic clutch is in attraction, the connecting column 140 and the thread storage barrel 211 are connected into a whole, the thread storage barrel 211 rotates along with the connecting column 140 to complete the lifting of the warning piece 200, when only part of the warning piece 200 is required to lift, the corresponding part of the electromagnetic clutch can be attracted, the rest of the electromagnetic clutches are disconnected, the warning piece 200 is controlled independently, and the safety warning device 10 is more suitable for various working conditions of field maintenance.
In some preferred embodiments, the electromagnetic clutch is a remote-control electromagnetic clutch, which can remotely control the on/off of a plurality of electromagnetic clutches, and the motor 110 is a remote-control motor 110, which can remotely control the on/off and forward/reverse rotation of the motor 110. In some embodiments, the safety warning device 10 includes a remote controller, and the control of the electromagnetic clutch and the control of the motor 110 are provided on one remote controller, so that the operation is more convenient.
The quantity of warning piece 200 can be according to overhauing the configuration of on-the-spot condition, and under the general condition, the quantity of warning piece 200 is 4, can guarantee that warning piece 200 is striking to play the warning effect, can avoid again because of warning piece 200 takes the site space too much, is provided with audible-visual annunciator on the warning piece 200, and audible-visual annunciator contains but not limited to LED lamp, fluorescent lamp and megaphone.
The single-motor multi-drive safety warning device 10 comprises a power part 100 and a plurality of warning parts 200, wherein the power part 100 comprises a motor 110 and a plurality of worm and worm wheel mechanisms, a connecting column 140 is arranged on each worm wheel 130, and the motor 110 rotates forwards and backwards to drive the connecting column 140 to rotate forwards and backwards. The number of the warning pieces 200 is multiple, each warning piece 200 is of a shear-type structure, each warning piece 200 is connected with each connecting column 140 through a lifting driving part 210, and each connecting column 140 rotates positively and negatively to respectively drive each warning piece 200 to lift. The lifting of a plurality of warning pieces 200 can be controlled by one motor 110, the resources and the field of the motor 110 are saved, and the motor 110 has strong practicability in the technical field of transformer substation maintenance.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. The utility model provides a single motor drives safety warning device more which characterized in that, warning device includes:
the power part comprises a motor, the number of the motors is one, the motors are positive and negative rotating motors, an output shaft of each motor is connected with a worm in a driving mode, a plurality of worm wheels are distributed around the worm, each worm wheel is respectively meshed with the worm, a connecting column is arranged on each worm wheel, and the positive and negative rotation of the motors drives the connecting columns to rotate positively and negatively;
the warning device comprises a plurality of warning pieces, the number of the warning pieces is matched with the number of the worm gears, the warning pieces are of a shear type structure, the lifting driving part of each warning piece is connected with each connecting column respectively, and each connecting column rotates positively and negatively to drive each warning piece to lift.
2. The single-motor multi-drive safety warning device according to claim 1, wherein each warning member comprises a bottom rod and a top rod, the bottom rod and the top rod are respectively provided with a sliding groove, a first shear arm and a second shear arm are arranged between the bottom rod and the top rod, the first shear arm and the second shear arm are rotatably connected, a sliding shaft is arranged at the bottom of the first shear arm, and the sliding shaft can slide in the sliding groove.
3. The single-motor multi-drive safety warning device according to claim 2, wherein the lifting driving part comprises a wire storage cylinder, one end of the wire storage cylinder is detachably connected with the connecting column, the connecting column rotates positively and negatively to drive the wire storage cylinder to rotate positively and negatively, the wire storage cylinder is connected with a first rope and a second rope, the other end of the first rope is connected with the sliding shaft, the other end of the second rope bypasses a fixed pulley arranged on the bottom rod and is connected with the sliding shaft, and the wire storage cylinder rotates positively and negatively to enable the first rope and the second rope to pull the sliding shaft to slide in the sliding groove.
4. The single-motor multi-drive safety warning device according to claim 3, wherein the lifting driving part further comprises an electromagnetic clutch, one end of the electromagnetic clutch is connected with the connecting column, and the other end of the electromagnetic clutch is connected with the wire storage cylinder.
5. The single-motor multi-drive safety warning device according to claim 4, wherein the electromagnetic clutch is a remote electromagnetic clutch.
6. The single-motor multi-drive safety warning device according to claim 1, wherein the motor is a remote control motor, and the start, stop and forward and reverse rotation of the motor can be controlled remotely.
7. The single-motor multi-drive safety warning device according to claim 1, wherein the power element further comprises a power element lower shell and a power element upper shell, the power element lower shell is arranged at the bottom of the power element, the power element upper shell is arranged at the top of the power element, and the connecting column is located outside the power element upper shell and the power element lower shell.
8. The single-motor multi-drive safety warning device according to claim 7, wherein the power element upper shell and the power element lower shell are hermetically connected, and the power element upper shell and the power element lower shell are made of stainless steel.
9. The single motor multiple drive safety warning device of claim 1, wherein the number of warning members is 4.
10. The single-motor multi-drive safety warning device as claimed in claim 1, wherein an audible and visual alarm is provided on the warning member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010901042.8A CN111862528A (en) | 2020-08-31 | 2020-08-31 | Single-motor multi-drive safety warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010901042.8A CN111862528A (en) | 2020-08-31 | 2020-08-31 | Single-motor multi-drive safety warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111862528A true CN111862528A (en) | 2020-10-30 |
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ID=72967965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010901042.8A Pending CN111862528A (en) | 2020-08-31 | 2020-08-31 | Single-motor multi-drive safety warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111862528A (en) |
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2020
- 2020-08-31 CN CN202010901042.8A patent/CN111862528A/en active Pending
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