CN112072527B - Intelligent handcart switch operating device with alarm function - Google Patents
Intelligent handcart switch operating device with alarm function Download PDFInfo
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- CN112072527B CN112072527B CN202010945451.8A CN202010945451A CN112072527B CN 112072527 B CN112072527 B CN 112072527B CN 202010945451 A CN202010945451 A CN 202010945451A CN 112072527 B CN112072527 B CN 112072527B
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- 238000010168 coupling process Methods 0.000 claims description 3
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- 238000010276 construction Methods 0.000 claims 2
- 238000007789 sealing Methods 0.000 abstract description 3
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- 230000002457 bidirectional effect Effects 0.000 description 18
- 238000000034 method Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
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- 239000000853 adhesive Substances 0.000 description 2
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- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
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- 230000004048 modification Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 210000003437 trachea Anatomy 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses an intelligent handcart switch operating device with an alarm function, which comprises a frame body, a two-way threaded rod, an oil drum and a second air bag, wherein chutes are formed in the left inner wall and the right inner wall of the frame body, a double-shaft motor is arranged below the inner side of the frame body, the outer side below the two-way threaded rod is connected with the oil drum through a bearing, electromagnets are fixed on the upper inner wall and the lower inner wall of the oil drum, first telescopic rods penetrate through the outer sides of the oil drums in a sealing mode, supporting plates are movably hinged to the tail ends of the first telescopic rods, steel rings are welded to the outer sides of supports, tires are arranged on the outer sides of the steel rings, a servo motor is arranged on the rear side of the frame body, and the output end of the servo motor is connected with a rotating rod through a coupler. This intelligence handcart switch operating means with alarming function installs first gasbag and second gasbag, through the extrusion in first gasbag and high-voltage board the place ahead, the effectual second gasbag that makes the sleeve outside takes place the inflation back block to fix inboard at the draw-in groove of high-voltage board handcart switch inner wall, has increased stability.
Description
Technical Field
The invention relates to the technical field of handcart switches, in particular to an intelligent handcart switch operating device with an alarm function.
Background
The handcart switch is generally used for a high-voltage switch cabinet, the high-voltage switch cabinet is a complete set of switch control equipment, and the complete set of switch control equipment mainly comprises a breaker chamber, a bus chamber and a wire chamber, wherein the bus chamber and the wire chamber are closed and started by the handcart switch, and the specific operation is completed by driving a moving contact and a fixed contact to be contacted and isolated through the rotation of a bidirectional threaded rod;
the operating device of the handcart switch still has certain defects at present, such as:
1. the existing handcart switch operation method generally utilizes manual operation to rotate a crank to realize the rotation work of a bidirectional threaded rod, if the crank is manually rotated, the rotation speed of the crank is not uniform, and the phenomenon that the crank falls off in the rotation process is very easily caused, so that the phenomenon that the interior of the handcart switch burns due to short circuit is caused;
2. when an emergency occurs, the existing operating device of the handcart switch cannot send out an alarm signal at the first time, so that safety accidents are easily caused, and inconvenience is brought to people;
therefore, the intelligent handcart switch operating device with the alarm function can well solve the problems.
Disclosure of Invention
The invention aims to provide an intelligent handcart switch operating device with an alarm function, and aims to solve the problems that the existing handcart switches in the market provided by the background art generally drive a bidirectional threaded rod to work through manual rotation of a crank, so that the rotation speed of the crank is not uniform, the crank is easy to fall off in the rotation process, the internal part of the handcart switch generates combustion and ignition due to short circuit, and the existing handcart switch operating device cannot send an alarm signal in the first time when in emergency, so that safety accidents are easy to occur, and inconvenience is brought to people.
In order to achieve the purpose, the invention provides the following technical scheme: an intelligent handcart switch operating device with an alarm function comprises a frame body, a two-way threaded rod, an oil drum and a second air bag, wherein chutes are formed in the left and right inner walls of the frame body, a double-shaft motor is installed below the inner side of the frame body, the left and right output ends of the double-shaft motor are connected with a rotating shaft through a coupler, a bevel gear is fixed at the outer end of the rotating shaft, the two-way threaded rod is welded at the outer side of the bevel gear, an oil drum is connected with an outer side bearing below the two-way threaded rod, electromagnets are fixed on the upper and lower inner walls of the oil drum, a sliding plate is connected with a thread on the outer side of the two-way threaded rod, iron absorbing stones are fixed on the upper and lower sides of the sliding plate, a first telescopic rod penetrates through the outer side of the oil drum in a sealing manner, a supporting plate is movably hinged to the tail end of the first telescopic rod, a movable rod is connected with the inner side bearing in front and back of the supporting plate, and a support is fixed on the outer side of the movable rod, the welding of support outside has the steel ring, and installs the tire in the steel ring outside, the slider is installed to the inboard top of framework, and slider and spout constitution sliding structure to the slider is the one-to-one with two-way threaded rod, servo motor is installed to the slider rear side, and servo motor's output passes through the shaft coupling and is connected with the bull stick, and the welding of framework the place ahead has the linking arm.
Preferably, the outer side of the rotating shaft is connected with a chain wheel through a key, and two ends of the rotating shaft are perpendicular to the frame body.
Preferably, oil drum and framework are welded fastening, and the oil drum is provided with 2 about the vertical central line symmetry of framework to the number of oil drum and the number of electro-magnet are 1:2, and oil drum and slide are sliding structure moreover.
Preferably, the number of the first telescopic rods is 4 about the vertical central line of the frame body, the first telescopic rods and the supporting plates are in one-to-one correspondence, and the vertical central line of the supporting plates and the vertical central line of the movable rod are overlapped.
Preferably, the warning light is installed to the linking arm top, and is fixed with the second telescopic link above the inboard of linking arm to the horizontal central line of second telescopic link top and the mutual coincidence of the horizontal central line of linking arm top, the second telescopic link left side top is fixed with the sheetmetal moreover.
Preferably, a first air bag is fixed on the outer side of the right end of the connecting arm, and a viscose pad is bonded on the right side of the first air bag.
Preferably, a sleeve is fixed at the right end of the connecting arm, a second air bag is fixed on the outer side of the right end of the sleeve, and the transverse center line of the second air bag and the transverse center line of the connecting arm are overlapped.
Compared with the prior art, the invention has the beneficial effects that: the intelligent handcart switch operating device with the alarm function;
(1) the structure can effectively contact and support the frame body with the ground through the retraction of the first telescopic rod, so that the overall stability and practicability are increased, and meanwhile, the phenomenon of instability generated in the later period during the rotation operation of a handcart switch in front of a high-voltage cabinet is avoided;
(2) the structure enables the handcart switch to have certain stability when the handcart switch rotates subsequently, avoids the separation of the right side of the rotating rod from the inside of the handcart switch in the rotating process, and increases the practicability;
(3) be provided with second telescopic link and sheetmetal, when the short circuit appears inside the high-voltage board and is on fire, because inside is in the encapsulated situation, the carbon dioxide gas of inside burning this moment can extrude the bull stick, simultaneously can effectually extrude the second gasbag in the sleeve outside, thereby make the inside gas of second gasbag extruded first gasbag, and make its inflation, and then effectual make inside gas of first gasbag pass through the trachea and carry inside the second telescopic link, thereby make second telescopic link left end and sheetmetal remove to the left side simultaneously, then when making the conductor contact of sheetmetal and warning light lower extreme, the warning light can the sound production shine this moment, this structure makes the high-voltage board when the short circuit appears inside and is on fire, can inform the staff through the warning light very first time, holistic security and practicality have been increased.
Drawings
FIG. 1 is a schematic view of the main sectional structure of the present invention;
FIG. 2 is a schematic right sectional view of the present invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 5 is an enlarged view of the structure at B in FIG. 1 according to the present invention;
FIG. 6 is an enlarged view of the structure of FIG. 2 at C according to the present invention;
FIG. 7 is an enlarged view of the structure shown in FIG. 3.
In the figure: 1. a frame body; 2. a chute; 3. a double-shaft motor; 4. a rotating shaft; 5. a sprocket; 6. a bevel gear; 7. a bidirectional threaded rod; 8. a slider; 9. an oil drum; 10. an electromagnet; 11. a slide plate; 12. a magnet; 13. a first telescopic rod; 14. a support plate; 15. a movable rod; 16. a support; 17. steel rings; 18. a tire; 19. a servo motor; 20. a connecting arm; 21. a rotating rod; 22. an alarm light; 23. a second telescopic rod; 24. a metal sheet; 25. a first air bag; 26. a viscose pad; 27. a sleeve; 28. a second air bag.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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. 1-7, the present invention provides a technical solution: an intelligent handcart switch operating device with an alarm function comprises a frame body 1, a sliding chute 2, a double-shaft motor 3, a rotating shaft 4, a chain wheel 5, a bevel gear 6, a two-way threaded rod 7, a sliding block 8, an oil drum 9, an electromagnet 10, a sliding plate 11, a magnet 12, a first telescopic rod 13, a supporting plate 14, a movable rod 15, a support 16, a steel ring 17, a tire 18, a servo motor 19, a connecting arm 20, a rotating rod 21, an alarm lamp 22, a second telescopic rod 23, a metal sheet 24, a first air bag 25, an adhesive pad 26, a sleeve 27 and a second air bag 28, wherein the sliding chute 2 is arranged on the left inner wall and the right inner wall of the frame body 1, the double-shaft motor 3 is arranged below the inner side of the frame body 1, the left output end and the right output end of the double-shaft motor 3 are connected with the rotating shaft 4 through a coupler, the bevel gear 6 is fixed at the outer side end of the rotating shaft 4, the double-way threaded rod 7 is welded on the outer side of the bevel gear 6, an oil drum 9 is connected with an outer side bearing below the bidirectional threaded rod 7, electromagnets 10 are fixed on the upper inner wall and the lower inner wall of the oil drum 9, a sliding plate 11 is connected with threads on the outer side of the bidirectional threaded rod 7, magnet 12 is fixed on the upper side and the lower side of the sliding plate 11, a first telescopic rod 13 penetrates through the outer side of the oil drum 9 in a sealing manner, a supporting plate 14 is movably hinged to the tail end of the first telescopic rod 13, a movable rod 15 is connected with the front inner side bearing and the rear inner side bearing of the supporting plate 14, a support 16 is fixed on the outer side of the movable rod 15, a steel ring 17 is welded on the outer side of the support 16, a tire 18 is installed on the outer side of the steel ring 17, a sliding block 8 is installed above the inner side of the frame body 1, the sliding block 8 and the sliding groove 2 form a sliding structure, the sliding block 8 and the bidirectional threaded rod 7 are in one-to-one correspondence, a servo motor 19 is installed on the rear side of the sliding block 8, and the output end of the servo motor 19 is connected with a rotating rod 21 through a coupler, and a connecting arm 20 is welded to the front of the frame 1.
4 outside key-type in pivot is connected with sprocket 5, and 4 both ends in pivot and 1 mutually perpendicular of framework, the design of above-mentioned structure for it is rotatory through 4 rotatory effectual drive sprockets 5 of pivot, and 4 two-way threaded rods 7 of effectual drive of ability are rotatory when sprocket 5 is rotatory, have increased transmission effect.
The first telescopic link 13 is provided with 4 about the vertical central line symmetry of framework 1, and first telescopic link 13 is the one-to-one correspondence with backup pad 14 to the vertical central line of backup pad 14 and the vertical central line of movable rod 15 coincide each other, the design of above-mentioned structure for through the effectual tire 18 lift that drives the below of support 16 of the lift of first telescopic link 13, increased the usability.
The first gasbag 25 is fixed with in the linking arm 20 right-hand member outside, and the first gasbag 25 right side bonds and has viscose pad 26, and the design of above-mentioned structure can be effectual with the inboard draw-in groove of handcart switch in high-voltage board the place ahead with second gasbag 28 block through the shrink of first gasbag 25, has increased the steadiness.
The sleeve 27 is fixed at the right end of the connecting arm 20, the second air bag 28 is fixed on the outer side of the right end of the sleeve 27, the transverse center line of the second air bag 28 and the transverse center line of the connecting arm 20 are overlapped, and the stability is improved due to the design of the structure and the effect of the structure.
The working principle is as follows: when the intelligent handcart switch operating device with the alarm function is used, firstly, as shown in figures 1, 4 and 7, the whole device is moved to the front of a high-voltage cabinet through a wheel at the lower part, then the height of a rotating rod 21 is adjusted according to the handcart switch position of the high-voltage cabinet, the specific operation is as follows, a double-shaft motor 3 is started to drive a rotating shaft 4 to rotate, a chain wheel 5 is driven to rotate through the rotation of the rotating shaft 4, conical gears 6 at four corners of a frame body 1 are driven to rotate through the rotation of the chain wheel 5, a bidirectional threaded rod 7 is driven to rotate through the rotation of the conical gear 6, a corresponding sliding block 8 is driven to move up and down by the rotation of the bidirectional threaded rod 7 in a matching way of a sliding chute 2, a connecting arm 20 is driven to move up and down by the sliding block 8, the rotating rod 21 is driven to move up and down by the connecting arm 20, so that the square end part at the right end of the rotating rod 21 is aligned with the handcart switch of the high-voltage cabinet, and the right end of the rotating rod 21 is inserted into the handcart switch of the high-voltage cabinet, the structure effectively adjusts the inlet of the rotating rod 21 corresponding to a handcart switch of a high-voltage cabinet by utilizing the up-and-down movement of the slide block 8, thereby increasing the practicability, simultaneously, the current of the electromagnet 10 on the upper side of the oil drum 9 is cut off, the magnet 12 on the upper side of the slide block 8 is separated from the electromagnet 10, thereby the slide block 8 is in threaded connection with the bidirectional threaded rod 7, the grain on the lower outer side of the bidirectional threaded rod 7 is larger than the grain on the upper outer side of the bidirectional threaded rod 7, therefore, the slide plate 11 can be effectively driven to be matched with the oil drum 9 to rapidly move downwards when the bidirectional threaded rod 7 rotates, the bidirectional threaded rod 7 on the inner side of the oil drum 9 is arranged as a polished rod up and down, the problem that the bidirectional threaded rod 7 is blocked by the slide plate 11 when the bidirectional threaded rod 7 continues to rotate is avoided, when the slide plate 11 moves to the lower side, the oil in the first telescopic rod 13 is pumped into the inner side of the oil drum 9, at the time, the first telescopic rod 13 retracts upwards to the inner side, when the first telescopic rod 13 retracts, the tire 18 and other related parts are driven to move upwards at the same time, so that the bottom of the frame body 1 is contacted with the ground, the structure can effectively contact and support the frame body 1 with the ground through retraction of the first telescopic rod 13, and the overall stability and practicability are improved;
as shown in fig. 1-3 and fig. 6, when the rotating rod 21 is inserted into the inside of the high-voltage cabinet, at this time, the adhesive pad 26 on the right side of the first air bag 25 is adhered to the front of the high-voltage cabinet, and in addition, the second air bag 28 on the outer side of the sleeve 27 is embedded in the inner side of the slot of the handcart switch inner wall of the high-voltage cabinet, because the first air bag 25 on the outer side of the right end of the connecting arm 20 is extruded to the front of the high-voltage cabinet to a certain extent, the first air bag 25 is expanded, and the air is extruded to the inner side of the second air bag 28 through the air pipe between the first air bag 25 and the second air bag 28, so that the second air bag 28 starts to expand, and thus the second air bag 28 is effectively clamped and fixed in the slot of the handcart switch inner wall, and this structure makes the handcart switch have certain stability when the handcart switch is rotated, and prevents the right side of the rotating rod 21 from being separated from the inside of the handcart switch during the rotation process, thereby increasing the practicability, then, a servo motor 19 is started to drive a rotating rod 21 to rotate, a screw rod in a handcart switch is driven to rotate through the rotation of the rotating rod 21, a moving contact is driven to move towards the inner rear side through the rotation of the screw rod in the handcart switch, so that the moving contact is contacted with a fixed contact in the handcart switch, the high-voltage cabinet starts to be electrified to work, after the handcart switch of the high-voltage cabinet is operated, the whole device is pulled towards the rear side manually, the rotating rod 21 is completely separated from the handcart switch of the high-voltage cabinet, the current of an electromagnet 10 at the bottom of the inner side of an oil drum 9 is cut off, the electromagnet 10 is separated from an iron stone 12 below a sliding plate 11 and is repelled, the sliding plate 11 is driven to be in threaded connection with the outer side of a bidirectional threaded rod 7, then a double-shaft motor 3 is started again to drive a rotating shaft 4 to rotate, the previous steps are the same, and then the sliding plate 11 is driven to move upwards in cooperation with the oil drum 9 through the rotation of the bidirectional threaded rod 7, the sliding plate 11 moves upwards to drive oil in the oil drum 9 to be extruded into the first telescopic rod 13, so that the lower part of the first telescopic rod 13 extends downwards, and a tire 18 below the first telescopic rod 13 is in contact with the ground, wherein the tire 18 is conventional and is similar to a tire 18 of a bicycle and is expanded through gas, and the tire 18 has the main effect that when the first telescopic rod 13 extends outwards quickly, a certain buffering effect can be achieved through the tire 18, meanwhile, a damping effect is achieved, and the problem that the first telescopic rod 13 is broken due to impact when extending outwards quickly is solved;
as shown in fig. 1-3 and fig. 6, when the high-voltage cabinet handcart switch is rotated and a short circuit occurs inside the high-voltage cabinet, since the inside is completely closed, the rotating rod 21 is extruded by the internal combustion carbon dioxide gas, after the rotating rod 21 is extruded, the gas is re-extruded and delivered into the first air bag 25 by the second air bag 28 outside the sleeve 27, when the first air bag 25 is expanded, the gas is extruded to the left side of the second telescopic rod 23 inside the connecting arm 20 through the communicated gas pipe, after being extruded by the gas through the second telescopic rod 23, the left end of the second telescopic rod 23 is driven to move to the left side, when the left end of the second telescopic rod 23 moves to the left side, the metal sheet 24 can be effectively driven to move to the left side, when the metal sheet 24 contacts with the conductor at the lower end of the alarm lamp 22, the alarm lamp 22 is connected with the current, and the alarm lamp 22 emits a sound, therefore, the alarm lamp 22 can emit sound and light to enable the staff to immediately catch up for power-off fire extinguishing, when short circuit fire occurs inside the high-voltage cabinet, the structure can inform the staff through the alarm lamp 22 for the first time, the overall safety and practicability are improved, meanwhile, the problems in the background art are solved, a series of work is completed, and the content which is not described in detail in the specification belongs to the prior art known by professionals in the field.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides an intelligence handcart switch operating means with alarming function, includes framework (1), two-way threaded rod (7), oil drum (9) and second gasbag (28), its characterized in that: the inner wall all seted up spout (2) about framework (1), and framework (1) inboard below installs double-shaft motor (3), and the output of double-shaft motor (3) left and right sides passes through the shaft coupling and is connected with pivot (4), and pivot (4) outside end all is fixed with conical gear (6), and simultaneously conical gear (6) outside all welds two-way threaded rod (7), two-way threaded rod (7) below outside bearing is connected with oil drum (9), and the upper and lower inner wall of oil drum (9) all is fixed with electro-magnet (10), and the threaded connection in the two-way threaded rod (7) outside has slide (11), and slide (11) upper and lower both sides all are fixed with magnet (12), the oil drum (9) outside all seals to run through has first telescopic link (13), and first telescopic link (13) end activity hinge joint has backup pad (14), and inboard bearing is connected with movable rod (15) around backup pad (14), and simultaneously movable rod (15) outside is fixed with support (16), support (16) outside welding has steel ring (17), and installs tire (18) in steel ring (17) outside, slider (8) are installed to framework (1) inboard top, and slider (8) and spout (2) constitute sliding construction to slider (8) are the one-to-one relation with two-way threaded rod (7), servo motor (19) are installed to slider (8) rear side, and the output of servo motor (19) passes through the shaft coupling and is connected with bull stick (21), and framework (1) the place ahead welding has linking arm (20).
2. The intelligent handcart switch operating device with the alarm function according to claim 1, characterized in that: the outer side key of the rotating shaft (4) is connected with a chain wheel (5), and the two ends of the rotating shaft (4) are perpendicular to the frame body (1).
3. The intelligent handcart switch operating device with the alarm function according to claim 1, characterized in that: oil drum (9) and framework (1) are welded fastening, and oil drum (9) are provided with 2 about the vertical central line symmetry of framework (1) to the number of oil drum (9) and the number of electro-magnet (10) are 1:2, and oil drum (9) and slide (11) are sliding construction moreover.
4. The intelligent handcart switch operating device with the alarm function according to claim 1, characterized in that: first telescopic link (13) are provided with 4 about the vertical central line symmetry of framework (1), and first telescopic link (13) and backup pad (14) are the one-to-one correspondence to the vertical central line of backup pad (14) and the vertical central line of movable rod (15) coincide each other.
5. The intelligent handcart switch operating device with the alarm function according to claim 1, characterized in that: warning light (22) are installed to connecting arm (20) top, and are fixed with second telescopic link (23) above the inboard of connecting arm (20), and the horizontal central line of second telescopic link (23) top and the horizontal central line of connecting arm (20) top coincide each other, and second telescopic link (23) left side top is fixed with sheetmetal (24) moreover.
6. The intelligent handcart switch operating device with the alarm function according to claim 5, is characterized in that: a first air bag (25) is fixed on the outer side of the right end of the connecting arm (20), and a viscose pad (26) is bonded on the right side of the first air bag (25).
7. The intelligent handcart switch operating device with the alarm function according to claim 1, characterized in that: a sleeve (27) is fixed at the right end of the connecting arm (20), a second air bag (28) is fixed on the outer side of the right end of the sleeve (27), and the transverse center line of the second air bag (28) and the transverse center line of the connecting arm (20) are overlapped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010945451.8A CN112072527B (en) | 2020-09-10 | 2020-09-10 | Intelligent handcart switch operating device with alarm function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010945451.8A CN112072527B (en) | 2020-09-10 | 2020-09-10 | Intelligent handcart switch operating device with alarm function |
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| Publication Number | Publication Date |
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| CN112072527A CN112072527A (en) | 2020-12-11 |
| CN112072527B true CN112072527B (en) | 2022-04-05 |
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| CN202010945451.8A Active CN112072527B (en) | 2020-09-10 | 2020-09-10 | Intelligent handcart switch operating device with alarm function |
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| CN112474152A (en) * | 2020-12-17 | 2021-03-12 | 柳琴琴 | Wash platform adjusting device for spray gun |
| CN112874642B (en) * | 2021-03-02 | 2022-02-01 | 临沂大学 | Quick-opening type fixing device for automobile spare tire |
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| CN205657366U (en) * | 2016-03-21 | 2016-10-19 | 国家电网公司 | Quick operating means of cubical switchboard handcart |
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