CN113842570B - Pre-tightening force limiting device of intelligent omnibearing operation belt and use method thereof - Google Patents
Pre-tightening force limiting device of intelligent omnibearing operation belt and use method thereof Download PDFInfo
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- CN113842570B CN113842570B CN202111256101.1A CN202111256101A CN113842570B CN 113842570 B CN113842570 B CN 113842570B CN 202111256101 A CN202111256101 A CN 202111256101A CN 113842570 B CN113842570 B CN 113842570B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/0006—Harnesses; Accessories therefor
- A62B35/0025—Details and accessories
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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
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Abstract
The invention discloses a pre-tightening force limiting device of an intelligent omnibearing operating belt and a using method thereof, and relates to the technical field of intelligent protection. The method comprises the following steps: the pre-tightening mechanism is used for tightening the operation belt and eliminating a wearing gap between the operation belt and a human body so as to enable the operation belt to enter a pre-tightening state; the force limiting mechanism is used for limiting the tightening speed of the operation belt and increasing the movement resistance of the operation belt; the intelligent padlock mechanism is used for monitoring the height of the operation belt and automatically giving an early warning when the wearing personnel performs irregular operation; and the controller controls the pre-tightening mechanism to start when the acceleration received by the controller reaches a braking threshold value, and controls the force limiting mechanism to start when the constraint force received by the controller reaches a set threshold value. The invention organically integrates the pre-tightening mechanism, the force limiting mechanism and the intelligent padlock mechanism, changes mechanical braking into electronic control braking, has short response time and greatly improves the safety performance after the operator accidentally falls.
Description
Technical Field
The invention relates to the technical field of intelligent protection, in particular to a pre-tightening force limiting device of an intelligent omnibearing operating belt and a using method thereof.
Background
At present construction worker when carrying out high altitude construction, main safety protection measure is for wearing the high altitude construction safety belt, but the safety protection nature of current high altitude construction safety belt has certain limitation, wears personnel and in time can not lock when the accident falls, and does not set up the limit structure, and the impact force when alleviateing to fall is alleviateed to the absorption striking ability that can not be fine to cause the injury to wearing personnel. Secondly, when wearing personnel and using safe padlock, the condition that the operation is irregular often takes place, and the installation standard of hanging high usefulness that can not be fine carries out, hangs the high safety belt of using of workman for some convenience, in case the emergence falls, can increase the impact force, brings danger. Therefore, the conventional aerial work safety belt cannot provide comprehensive safety protection for wearing personnel.
In order to further standardize the operation steps of the wearing personnel, provide the wearing personnel with a plurality of safety protection when a high-fall accident happens, and reduce the disability and fatality rate of the high-fall accident to the lowest, a pre-tightening force limiting device of an intelligent all-directional operation belt and a use method thereof are needed to be provided.
Disclosure of Invention
The invention mainly aims to provide a pre-tightening force limiting device of an intelligent omnibearing operating belt and a using method thereof, and aims to solve the problems in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a pretension limit force device in all-round operation area of intelligence, includes:
the pre-tightening mechanism is fixedly connected to the operation belt and used for tightening the operation belt and eliminating a wearing gap between the operation belt and a human body so as to enable the operation belt to enter a pre-tightening state;
the force limiting mechanism is fixedly connected to the operation belt and used for limiting the tightening speed of the operation belt, increasing the movement resistance of the operation belt and avoiding the injury to wearing personnel caused by overlarge restraining force of the operation belt;
one end of the intelligent padlock mechanism is detachably connected to the operation belt, and the other end of the intelligent padlock mechanism is detachably connected to the fixing component and is used for monitoring the height of the operation belt and automatically giving an early warning when the wearing personnel performs irregular operation;
the acceleration sensor is used for detecting the acceleration of a wearer and transmitting a detected acceleration signal to the controller;
the pressure sensor is used for detecting the restraining force of the operation belt on a wearing person and transmitting a detected restraining force signal to the controller;
and the controller controls the pre-tightening mechanism to start when the acceleration received by the controller reaches a braking threshold value, and controls the force limiting mechanism to start when the constraint force received by the controller reaches a set threshold value.
Furthermore, intelligence padlock mechanism includes go-between, connecting band and couple, and the connecting band both ends are fixed connection respectively the go-between with the couple, the go-between is connected with the operation area, the couple is connected with fixed component.
Furthermore, a first distance sensor is arranged at the hook position and used for monitoring the distance between the hanging position of the hook and the ground, a second distance sensor is arranged at the connecting ring and used for monitoring the distance between the connecting ring and the connecting position of the operation belt and the ground, and the first distance sensor and the second distance sensor transmit detected distance signals to the controller.
Further, intelligence padlock mechanism still includes bee calling organ, bee calling organ with the controller is connected, the controller receives the distance signal of first distance sensor and second distance sensor, and when the perpendicular distance difference between them is less than the safety threshold, the controller control bee calling organ carries out the early warning.
Furthermore, the pre-tightening mechanism comprises a pre-tightening belt and a gas generator, the gas generator is arranged on the pre-tightening belt, the pre-tightening belt is sleeved on the operation belt, a gas generating agent is arranged in the pre-tightening belt, when the acceleration received by the controller reaches a braking threshold value, the controller starts the gas generator to convert the gas generating agent into gas, the gas is filled in the pre-tightening belt quickly, the wearing gap between the operation belt and a human body is eliminated indirectly, and the operation belt enters a pre-tightening state.
Furthermore, the force limiting mechanism comprises a force limiting block, a cavity is arranged in the force limiting block, openings are formed in two ends of the force limiting block, and the operation belt penetrates through the openings and is in sliding connection with the force limiting block.
Furthermore, a first spring and a second spring are fixedly arranged on the two inner walls, opposite to the force limiting block, respectively, an electromagnet is arranged at the outer end of the first spring, a permanent magnet is arranged at the outer end of the second spring, and the electromagnet is electrically connected with the controller.
A use method of an intelligent omnibearing operation belt pre-tightening force limiting device comprises the following steps:
s1, connecting a connecting belt with an operating belt through a connecting ring, connecting the connecting belt with a constructed fixing component through a hook, wearing the operating belt by a human body at the moment, connecting one end of an intelligent padlock mechanism with the operating belt, and connecting the other end of the intelligent padlock mechanism with the fixing component;
s2, the first distance sensor transmits a height signal of a hanging position of the hook to the controller, the second distance sensor transmits a height signal of a connecting position of the connecting ring and the operation belt to the controller, the controller judges the vertical height difference of the connecting ring and the operation belt, and when the height difference is smaller than a safety threshold value, the controller controls the buzzer to give an early warning;
s3, when the worker falls accidentally, the acceleration sensor detects the acceleration of the human body and transmits a detected acceleration signal to the controller, when the acceleration received by the controller reaches a braking threshold value, the controller controls the pre-tightening mechanism to start, a wearing gap between the operation belt and the human body is eliminated, and the operation belt enters a pre-tightening state;
s4, when pre-tightening is carried out, the pressure sensor on the operation belt detects the restraint force of the operation belt on a person wearing the operation belt, the detected restraint force signal is transmitted to the controller, when the restraint force received by the controller reaches a set threshold value, the controller controls the force limiting mechanism to be started, the resistance of the operation belt to move is increased, and the injury to the person wearing the operation belt due to the fact that the restraint force of the operation belt is too large is avoided.
Compared with the prior art, the invention has the following beneficial effects:
according to the intelligent padlock mechanism, the pre-tightening mechanism, the force limiting mechanism and the intelligent padlock mechanism are organically integrated, the controller is arranged, mechanical braking is changed into electronic control braking, after an operator accidentally falls, the corresponding time is short, the controller can control the pre-tightening mechanism to start according to an acceleration signal transmitted by the acceleration sensor, the situation that the operator cannot be tightened by an operation belt due to a high-falling situation is prevented, and the safety performance is greatly improved; the controller can control the force limiting mechanism to start according to the constraint force signal transmitted by the pressure sensor, so that the injury to a wearing person caused by overlarge constraint force of the operation belt is avoided, and the wearing comfort of the operation person is improved; set up intelligent padlock mechanism, can monitor the operation area height and hang the low condition of using, the controller judges the vertical altitude difference of first distance sensor and second distance sensor position, and when the altitude difference was less than safe threshold value, controller control bee calling organ carried out the early warning, final very big reduction the risk that high altitude construction personnel fall.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of an intelligent padlock mechanism in embodiment 1 of the present invention.
Fig. 3 is a schematic structural diagram of a force limiting block in embodiment 1 of the present invention.
Fig. 4 is a schematic view of an internal structure of a force-limiting block in embodiment 1 of the present invention.
Fig. 5 is a schematic block diagram of a controller according to embodiment 1 of the present invention.
Fig. 6 is a schematic structural diagram of a pretensioning mechanism in embodiment 2 of the invention.
Fig. 7 is a schematic view of the internal structure of the pretensioning mechanism in embodiment 2 of the invention.
Fig. 8 is a schematic structural view of a retractor according to embodiment 2 of the present invention.
The automatic locking device comprises an operation belt 1, a pre-tightening mechanism 2, a force limiting mechanism 3, a force limiting block 31, an opening 311, a first spring 32, a second spring 33, an electromagnet 34, a permanent magnet 35, an intelligent padlock mechanism 4, a connecting ring 41, a connecting belt 42, a hook 43, a reduction gear 5, an aluminum shell 6, a mandrel 71, a frame 72, a locking device 73, a rewinding volute spring 74, a contracting wheel 81, a deflector rod 82, a dial 83, a dial 84, a pressure rod 85, a ratchet shaft sleeve 86, a cover plate 87, a pawl 88, a rotating rod 89, a spring 831 and a sliding groove.
Detailed Description
The technical solution of the present invention is further illustrated by the accompanying drawings and examples.
Example 1
With reference to fig. 1 to 5, the present invention provides a pre-tightening force-limiting device for an intelligent omni-directional working belt, comprising: the pre-tightening mechanism 2 is fixedly connected to the operation belt 1 and used for tightening the operation belt 1 and eliminating a wearing gap between the operation belt 1 and a human body so as to enable the operation belt 1 to enter a pre-tightening state;
the force limiting mechanism 3 is fixedly connected to the operation belt 1 and used for limiting the tightening speed of the operation belt 1, increasing the movement resistance of the operation belt 1 and avoiding the injury to a wearer due to the overlarge restraining force of the operation belt 1;
one end of the intelligent padlock mechanism 4 is detachably connected to the operation belt 1, and the other end of the intelligent padlock mechanism is detachably connected to the fixing component and is used for monitoring the height of the operation belt 1 and automatically giving an early warning when the wearing person does not operate normally;
the acceleration sensor is used for detecting the acceleration of a wearer and transmitting a detected acceleration signal to the controller;
the pressure sensor is used for detecting the restraining force of the operation belt 1 on a wearer and transmitting a detected restraining force signal to the controller;
and the controller controls the pre-tightening mechanism to start 2 when the acceleration received by the controller reaches a braking threshold value, and controls the force limiting mechanism 3 to start when the constraint force received by the controller reaches a set threshold value. In this embodiment, the braking threshold is set to 9.8m/s 2 When the acceleration of the human body reaches the gravity acceleration, namely the moment when the human body falls down, the controller controls the pre-tightening mechanism 2 to start.
Preferably, the intelligent padlock mechanism 4 includes a connection ring 41, a connection belt 42 and a hook 43, two ends of the connection belt 42 are respectively and fixedly connected to the connection ring 41 and the hook 43, the connection ring 41 is connected to the operation belt 42, and the hook 43 is connected to a fixing member. The first distance sensor is arranged at the position of the hook 43 and used for monitoring the distance between the hanging position of the hook 43 and the ground, the second distance sensor is arranged at the position of the connecting ring 41 and used for monitoring the distance between the connecting position of the connecting ring 41 and the operation belt 1 and the ground, and the first distance sensor and the second distance sensor transmit detected distance signals to the controller. The intelligent padlock mechanism 4 further comprises a buzzer, the buzzer is connected with the controller, the controller receives distance signals of the first distance sensor and the second distance sensor, and when the vertical distance difference between the first distance sensor and the second distance sensor is smaller than a safety threshold value, the controller controls the buzzer to give an early warning. In this embodiment, the operation belt 1 and the connection belt 42 are both made of high-strength nylon fabric.
Preferably, the pre-tightening mechanism 2 comprises a pre-tightening belt and a gas generator, the gas generator is arranged on the pre-tightening belt, the pre-tightening belt is sleeved on the operation belt, a gas generating agent is arranged in the pre-tightening belt, when the acceleration received by the controller reaches a braking threshold value, the controller starts the gas generator to convert the gas generating agent into gas, the pre-tightening belt is filled with the gas quickly, a wearing gap between the operation belt 1 and a human body is indirectly eliminated, and the operation belt 1 enters a pre-tightening state. As shown in fig. 1, in the present embodiment, one pretensioner mechanism 2 is provided at the waist portion of the work belt 1, and in another embodiment, it may be provided at any portion of the work belt 1, or a plurality of pretensioner mechanisms 2 may be provided. The pre-tightening belt is made of polyamide fabric with good anti-cracking performance, is semi-hard foam plastic and can bear larger pressure. The invention changes the pre-tightening mechanism 2 from mechanical braking to electronic control braking, has convenient and light integral structure, achieves the pre-tightening effect by utilizing gas expansion, and has ingenious conception.
Preferably, the force limiting mechanism 3 includes a force limiting block 31, a cavity is arranged in the force limiting block 31, openings 311 are arranged at two ends of the force limiting block 31, and the operation belt 1 penetrates through the openings 311 and is connected with the force limiting block 31 in a sliding manner. The two opposite inner walls of the force limiting block 31 are respectively and fixedly provided with a first spring 32 and a second spring 33, the outer end of the first spring 32 is provided with an electromagnet 34, the outer end of the second spring 33 is provided with a permanent magnet 35, and the electromagnet 34 is electrically connected with the controller.
In this embodiment, when needing to carry out the power limitation, the controller control electro-magnet 34 circular telegram, produces the magnetic field opposite with permanent magnet 35, and electro-magnet 34 and permanent magnet 35 inter attraction drive first spring 32 and second spring 33 and stretch to make electro-magnet 34 and permanent magnet 35 be close to each other, finally press from both sides tight operation area 1, increase the resistance of operation area 1 motion, avoid causing the injury because of the too big personnel of wearing of operation area 1 restraint power. After the force limiting is completed, the controller controls the electromagnet 34 to be powered off or reverse current is input, the electromagnet 34 and the permanent magnet 35 are not attracted to each other, and the first spring 32 and the second spring 33 are restored to the original state by means of self elasticity or reverse acting force. As shown in fig. 1, in the present embodiment, a force limiter mechanism 3 is provided at the waist portion of the work belt 1.
A use method of an intelligent omnibearing operation belt pre-tightening force limiting device comprises the following steps:
s1, connecting a connecting belt 42 with an operation belt 1 through a connecting ring 41, connecting the connecting belt 42 with a constructed fixing component through a hook 43, wearing the operation belt 1 by a human body at the moment, connecting one end of an intelligent padlock mechanism 4 with the operation belt 1, and connecting the other end of the intelligent padlock mechanism 4 with the fixing component;
s2, the first distance sensor transmits a height signal of a hanging part of the hook 43 to the controller, the second distance sensor transmits a height signal of a connecting part of the connecting ring 42 and the operation belt 1 to the controller, the controller judges the vertical height difference of the two, and when the height difference is smaller than a safety threshold value, the controller controls the buzzer to give an early warning;
s3, when the worker falls accidentally, the acceleration sensor detects the acceleration of the human body, the detected acceleration signal is transmitted to the controller, when the acceleration received by the controller reaches a braking threshold value, the controller controls the pre-tightening mechanism 2 to be started, the wearing gap between the operation belt 1 and the human body is eliminated, and the operation belt 1 enters a pre-tightening state;
s4, when pre-tightening is carried out, the pressure sensor on the operation belt 1 detects the restraint force of the operation belt on a person wearing the operation belt, the detected restraint force signal is transmitted to the controller, when the restraint force received by the controller reaches a set threshold value, the controller controls the force limiting mechanism 3 to be started, the resistance of the operation belt 1 to move is increased, and the injury to the person wearing the operation belt due to the fact that the restraint force of the operation belt 1 is too large is avoided.
Example 2
With reference to fig. 6 to 8, this embodiment provides another embodiment of the pretensioning mechanism.
The pre-tightening mechanism comprises a rotary and retractable wheel disc 81, a driving lever 82, a driving disc 83, a pressure lever 84, a ratchet shaft sleeve 85, a cover plate 86, pawls 87, a rotating rod 88 and a spring 89, the rotary and retractable wheel disc 81 is connected with a motor through a reduction gear 5, the ratchet shaft sleeve 85 is connected with a retractor, the driving disc 83 is provided with a plurality of sliding grooves 831, one ends of the sliding grooves 831 are far away from the axle center of the driving disc 83, the other ends of the sliding grooves 831 are close to the axle center and are respectively matched with the corresponding pulling levers 82 of the plurality of pawls 87, the driving lever 82 can move in the sliding grooves 831, the pawls 87 are respectively and uniformly arranged in the rotary and retractable wheel disc 81 along the circumferential direction and can rotate around the rotating rod 88 fixed on the rotary and retractable wheel disc 81, the ratchet shaft sleeve 85, the cover plate 86 and the driving disc 83 are sequentially and concentrically arranged on the inner groove of the rotary and retractable wheel disc 81, the ratchet shaft sleeve 85 can be meshed with the pawls 87 at the outer side, the ratchet part of the ratchet shaft sleeve 85 and the pawls 87 are encapsulated in the inner groove of the rotary and retractable wheel disc 81 by the cover plate 86, the pressing rod 84 is arranged on the aluminum shell 6, the spring 89 enables the pressing rod 84 to exert force on the dial 83, the dial 83 is enabled to rotate and lags behind the rotating and contracting wheel disc 81, and therefore the shifting rod 82 slides in the sliding groove 831, and the ratchet shaft sleeve 85 is engaged with and separated from the pawl 87.
In this embodiment, direct current motor passes through mounting panel and 6 riveting of aluminum hull, and direct current motor's power output shaft is connected with reduction gear 5, and reduction gear 5 links to each other with pretension mechanism, and pretension mechanism and the dabber 71 one end splined connection of coiler, direct current motor pass through pretension mechanism and drive the coiler and tighten up the operation area. The retractor includes a spindle 71, a frame 72, a locker 73, and a rewind scroll spring 74.
When the direct current motor is used, the direct current motor rotates to drive the rotary and retractable wheel disc 81 to rotate, the driving disc 83 is stressed under the action of the elastic force of the spring 89, the rotation of the driving disc 83 lags behind the rotary and retractable wheel disc 81, so that the driving disc 83 and the rotary and retractable wheel disc 81 generate relative rotation angles, the relative rotation angles can enable the driving lever 82 to slide in the sliding groove 831, and therefore the engagement and the separation of the pawl 87 and the ratchet wheel shaft sleeve 85 are achieved, namely the forward rotation of the direct current motor can transmit the motion and the power to the retractor spindle 71.
It should be understood that the present invention is not limited to the particular embodiments described above, but is capable of various modifications, equivalent arrangements, and equivalents, without departing from the spirit and scope of the invention.
Claims (3)
1. The utility model provides a pretension limit force device in all-round operation area of intelligence which characterized in that includes:
the pre-tightening mechanism is fixedly connected to the operation belt and used for tightening the operation belt and eliminating a wearing gap between the operation belt and a human body so as to enable the operation belt to enter a pre-tightening state;
the force limiting mechanism is fixedly connected to the operation belt and used for limiting the tightening speed of the operation belt, increasing the movement resistance of the operation belt and avoiding the injury to wearing personnel caused by overlarge restraining force of the operation belt;
one end of the intelligent padlock mechanism is detachably connected to the operation belt, and the other end of the intelligent padlock mechanism is detachably connected to the fixing component and is used for monitoring the height of the operation belt and automatically giving an early warning when the wearing personnel performs irregular operation;
the acceleration sensor is used for detecting the acceleration of a wearer and transmitting a detected acceleration signal to the controller;
the pressure sensor is used for detecting the restraining force of the operation belt on a wearing person and transmitting a detected restraining force signal to the controller;
the controller controls the pre-tightening mechanism to start when the acceleration received by the controller reaches a braking threshold value, and controls the force limiting mechanism to start when the constraint force received by the controller reaches a set threshold value;
the intelligent padlock mechanism comprises a connecting ring, a connecting belt and a hook, wherein two ends of the connecting belt are respectively and fixedly connected with the connecting ring and the hook, the connecting ring is connected with the operating belt, and the hook is connected with a fixing component;
the first distance sensor is arranged at the hook and used for monitoring the distance between the hanging position of the hook and the ground, the second distance sensor is arranged at the connecting ring and used for monitoring the distance between the connecting ring and the connecting position of the operation belt and the ground, and the first distance sensor and the second distance sensor transmit detected distance signals to the controller;
the pre-tightening mechanism comprises a pre-tightening belt and a gas generator, the gas generator is arranged on the pre-tightening belt, the pre-tightening belt is sleeved on the operation belt, a gas generating agent is arranged in the pre-tightening belt, when the acceleration received by the controller reaches a braking threshold value, the controller starts the gas generator to convert the gas generating agent into gas, the pre-tightening belt is quickly filled with the gas, a wearing gap between the operation belt and a human body is indirectly eliminated, and the operation belt enters a pre-tightening state;
the force limiting mechanism comprises a force limiting block, a cavity is arranged in the force limiting block, openings are formed in two ends of the force limiting block, and the operation belt penetrates through the openings and is in sliding connection with the force limiting block;
the two opposite inner walls of the force limiting block are respectively and fixedly provided with a first spring and a second spring, the outer end of the first spring is provided with an electromagnet, the outer end of the second spring is provided with a permanent magnet, and the electromagnet is electrically connected with the controller.
2. The pre-tightening force limiting device of an intelligent omnibearing working belt as claimed in claim 1, wherein the intelligent padlock mechanism further comprises a buzzer, the buzzer is connected with the controller, the controller receives distance signals of the first distance sensor and the second distance sensor, and when the vertical distance difference between the first distance sensor and the second distance sensor is smaller than a safety threshold value, the controller controls the buzzer to give an early warning.
3. The use method of the intelligent omnibearing working belt pre-tightening force limiting device as recited in claim 1, characterized by comprising the following steps:
s1, connecting a connecting belt with an operating belt through a connecting ring, connecting the connecting belt with a constructed fixing component through a hook, wearing the operating belt by a human body at the moment, connecting one end of an intelligent padlock mechanism with the operating belt, and connecting the other end of the intelligent padlock mechanism with the fixing component;
s2, the first distance sensor transmits a height signal of a hanging position of the hook to the controller, the second distance sensor transmits a height signal of a connecting position of the connecting ring and the operation belt to the controller, the controller judges the vertical height difference of the connecting ring and the operation belt, and when the height difference is smaller than a safety threshold value, the controller controls the buzzer to give an early warning;
s3, when the worker falls accidentally, the acceleration sensor detects the acceleration of the human body and transmits a detected acceleration signal to the controller, when the acceleration received by the controller reaches a braking threshold value, the controller controls the pre-tightening mechanism to start, a wearing gap between the operation belt and the human body is eliminated, and the operation belt enters a pre-tightening state;
s4, when pre-tightening is carried out, the pressure sensor on the operation belt detects the restraint force of the operation belt on a person wearing the operation belt, the detected restraint force signal is transmitted to the controller, when the restraint force received by the controller reaches a set threshold value, the controller controls the force limiting mechanism to be started, the resistance of the operation belt to move is increased, and the injury to the person wearing the operation belt due to the fact that the restraint force of the operation belt is too large is avoided.
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| CN202111256101.1A CN113842570B (en) | 2021-10-27 | 2021-10-27 | Pre-tightening force limiting device of intelligent omnibearing operation belt and use method thereof |
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| CN202111256101.1A CN113842570B (en) | 2021-10-27 | 2021-10-27 | Pre-tightening force limiting device of intelligent omnibearing operation belt and use method thereof |
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| CN113842570B true CN113842570B (en) | 2022-08-02 |
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| CN114518144B (en) * | 2022-03-17 | 2022-09-30 | 广州华微明天软件技术有限公司 | Safety rope hanging state identification method based on distance and attitude and safety rope |
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|---|---|---|---|---|
| CN202761940U (en) * | 2012-08-31 | 2013-03-06 | 卢时东 | High-altitude and low-altitude working air-sac type safety belt |
| CN103847686A (en) * | 2014-01-22 | 2014-06-11 | 湖南大学 | Automobile active type pre-tightening safety belt |
| CN205098132U (en) * | 2015-10-15 | 2016-03-23 | 北京汽车股份有限公司 | Restraint system and car |
| JP2018039336A (en) * | 2016-09-06 | 2018-03-15 | トヨタ自動車株式会社 | Force limiter load change system |
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| CN113842570A (en) | 2021-12-28 |
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