阅读说明：本技术 一种大型电力设备安装用吊装保护装置 (Hoisting protection device for installation of large-scale power equipment ) 是由 李良 于 2021-07-01 设计创作，主要内容包括：本发明涉及电力安装技术领域,且公开了一种大型电力设备安装用吊装保护装置,包括卡座,所述卡座中部内壁开设有卡槽,卡座中部内壁活动连接有线盘,线盘中部内壁活动连接有推杆。该大型电力设备安装用吊装保护装置,通过线盘带动触发电极运动,触发电极带动电介质板运动,再通过负极板与电流变液的配合使用,从而达到限速的效果,当线盘的速度处于非匀速状态时,此时触发电极受到的牵引力不断变化,当触发电极受到的牵引力大于复位弹簧二的牵引力时,负极板和正极板由原来的最小相对面积逐渐变为最大此时达到压敏电阻的最大通路电压,使得导电柱处于通路状态,此时电流变液由液态转变为固态,定轴外侧受到的阻力较大,从而使线盘转速下降。(The invention relates to the technical field of electric power installation, and discloses a hoisting protection device for large-scale electric power equipment installation. This hoist and mount protection device is used in large-scale power equipment installation, drive the motion of electricity generation electrode through the drum, trigger electrode drives the motion of dielectric medium plate, the rethread negative plate uses with the cooperation of electrorheological fluid, thereby reach the effect of speed limit, when the speed of drum is in the non-uniform velocity state, the traction force that trigger electrode received at this moment constantly changes, when the traction force that trigger electrode received is greater than reset spring two, negative plate and positive plate become the biggest access voltage that reaches piezo-resistor this moment by original minimum relative area gradually, make to lead electrical pillar and be in the access state, electrorheological fluid is solid-state by liquid transition this moment, the drum resistance that receives outside the dead axle is great, thereby make the drum rotational speed descend.)

1. The utility model provides a large-scale power equipment installation is with hoist and mount protection device, includes cassette (1), its characterized in that: draw-in groove (2) have been seted up to cassette (1) middle part inner wall, and cassette (1) middle part inner wall swing joint has drum (4), and drum (4) middle part inner wall swing joint has push rod (3), and liquid trap (8) have been seted up at drum (4) middle part, and liquid trap (8) middle part inner wall swing joint has electrorheological fluids (5), and drum (4) inner wall swing joint has dead axle (7).

2. The hoisting protection device for large-scale power equipment installation according to claim 1, wherein: the inner wall of the middle of the fixed shaft (7) is fixedly connected with a conductive column (6), the size of the conductive column (6) is smaller than that of the fixed shaft (7), and the conductive column (6) is in electrical contact with the electrorheological fluid (5).

3. The hoisting protection device for large-scale power equipment installation according to claim 1, wherein: the wire coil is characterized in that a stationary contact (9) is fixedly connected to the inner wall of the middle of the wire coil (4), a trigger electrode (10) is movably connected to the inner wall of the middle of the wire coil (4), a first reset spring (11) is fixedly connected to the inner side of the trigger electrode (10), and the size of the first reset spring (11) is smaller than that of the trigger electrode (10).

4. The hoisting protection device for large-scale power equipment installation according to claim 1, wherein: the inner wall of the middle of the wire coil (4) is provided with a centrifugal groove matched with the trigger electrode (10), the inner wall of the middle of the trigger electrode (10) is fixedly connected with a dielectric plate (16), and the inner side of the trigger electrode (10) is fixedly connected with a second reset spring (13).

5. The hoisting protection device for large-scale power equipment installation according to claim 1, wherein: a clamping block (17) is fixedly connected to the outer side of the push rod (3), and the size of the clamping block (17) is smaller than that of the wire coil (4).

6. The hoisting protection device for large-scale power equipment installation according to claim 1, wherein: the wire coil is characterized in that a negative plate (14) is fixedly connected to the inner wall of the middle of the wire coil (4), a positive plate (12) is fixedly connected to the inner wall of the middle of the wire coil (4), and the positive plate (12) and the negative plate (14) are the same in size.

7. The hoisting protection device for large-scale power equipment installation according to claim 1, wherein: and the inner wall of the middle part of the wire coil (4) is fixedly connected with a piezoresistor (15), and the piezoresistor (15) is electrically connected with the negative plate (14).

8. The hoisting protection device for large-scale power equipment installation according to claim 4, wherein: the size of the dielectric plate (16) is smaller than that of the trigger electrode (10) and the size of the dielectric plate (16) is larger than that of the positive electrode plate (12) and the negative electrode plate (14).

Technical Field

The invention relates to the technical field of electric power installation, in particular to a hoisting protection device for large-scale electric power equipment installation.

Background

In the production and transmission of electric power, the transformer is indispensable power equipment, and the transformer has played a role in changing electric wire voltage in power transmission, because the transformer quality is heavier, all hoists in the installation at present, because current hoisting equipment all adopts the wire rope lifting hook to suspend it in midair, controls the lift of lifting hook through mechanical operation, because hoist and mount really convenient and fast, accelerated the process of engineering, consequently obtained extensive application.

Because the transformer can swing and rotate on the steel wire rope ceaselessly in the process of positioning the transformer, the inertia existing in the swinging and rotating processes can easily lead the gravity center of the equipment to be unstable, so that the hoisting equipment slips and even drops, and because the existing hoisting equipment does not have the functions of reducing the speed and quickly preventing the falling caused by rope falling, the potential safety hazard along the hoisting equipment exists.

Therefore, we propose a hoisting protection device for large-scale power equipment installation to solve the above problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the hoisting protection device for mounting the large-scale power equipment, which has the advantages of reducing the rotating speed of the hoisting equipment, detecting the running state of the equipment in real time and quickly reacting to falling and slipping, and solves the problem that the traditional equipment does not have a safety protection device.

(II) technical scheme

In order to achieve the purposes of reducing the rotating speed of the hoisting equipment, detecting the running state of the equipment in real time and quickly responding to falling and slipping, the invention provides the following technical scheme: the utility model provides a large-scale electrical equipment installation is with hoist and mount protection device, includes the cassette, the draw-in groove has been seted up to cassette middle part inner wall, and cassette middle part inner wall swing joint has the drum, and drum middle part inner wall swing joint has the push rod, and the hydrops groove has been seted up at the drum middle part, and hydrops groove middle part inner wall swing joint has electrorheological fluid, and drum inner wall swing joint has the dead axle.

Preferably, the inner wall of the middle part of the fixed shaft is fixedly connected with a conductive column, the size of the conductive column is smaller than that of the fixed shaft, the conductive column is electrically contacted with the electrorheological fluid, and after the conductive column is electrified, the electrorheological fluid is changed from a liquid state to a solid state so as to increase the resistance of the fixed shaft and the electrorheological fluid, so that the rotating speed of the wire coil is reduced, and the speed limiting effect is achieved.

Preferably, the inner wall of the middle of the wire coil is fixedly connected with a stationary contact, the inner wall of the middle of the wire coil is movably connected with a trigger electrode, the inner side of the trigger electrode is fixedly connected with a first reset spring, and the size of the first reset spring is smaller than that of the trigger electrode.

Preferably, the inner wall of the middle of the wire coil is provided with a centrifugal groove matched with the trigger electrode, the inner wall of the middle of the trigger electrode is fixedly connected with a dielectric plate, the inner side of the trigger electrode is fixedly connected with a second reset spring, the trigger electrode moves towards the outside under the action of centrifugal force, the centrifugal force applied to the trigger electrode is greater than the traction force of the first reset spring, and the trigger electrode is electrically contacted with the stationary contact at the moment, so that the push rod expands towards the outside to drive the fixture block to move.

Preferably, the push rod outside fixedly connected with fixture block, the size of fixture block is less than the size of drum, and the fixture block moves to the outside and carries out the joint with the draw-in groove under the effect of push rod to the realization carries out spacing protection to the drum, prevents that the drum from continuing to rotate under the pulling of rope.

Preferably, inner wall fixedly connected with negative plate in the middle part of the drum, inner wall fixedly connected with positive plate in the middle part of the drum, positive plate and negative plate size are the same, and positive plate and negative plate mainly play the last voltage's of control piezo-resistor effect to the state conversion of realization control electrorheological fluids.

Preferably, inner wall fixedly connected with piezo-resistor in the middle part of the drum, piezo-resistor and negative plate electric connection, when the terminal voltage of negative plate reached the biggest, piezo-resistor reached the biggest path voltage this moment, and the terminal biggest path voltage of piezo-resistor is less than the terminal biggest path voltage of negative plate.

Preferably, the size of dielectric plate is less than the size of trigger electrode and the size of dielectric plate is greater than the positive plate and negative plate size, receives the effect of centrifugal force when trigger electrode to the realization drives the motion of dielectric plate, changes the relative area of positive plate and negative plate, changes the size of negative plate terminal voltage.

(III) advantageous effects

Compared with the prior art, the invention provides a hoisting protection device for large-scale power equipment installation, which has the following beneficial effects:

1. this hoist and mount protection device is used in large-scale power equipment installation, drive the motion of electricity generation electrode through the drum, trigger electrode drives the motion of dielectric medium plate, the rethread negative plate uses with the cooperation of electrorheological fluid, thereby reach the effect of speed limit, when the speed of drum is in the non-uniform velocity state, the traction force that trigger electrode received constantly changes this moment, when the traction force that trigger electrode received is greater than reset spring two traction force, negative plate and positive plate become the biggest by original minimum relative area gradually this moment, the terminal voltage grow of negative plate this moment, reach piezo-resistor's the biggest access voltage this moment, thereby make and lead electrical pillar in the access state, electrorheological fluid is changed into solid-state by liquid this moment, the resistance that the dead axle outside received this moment is great, thereby make the drum rotational speed descend.

2. This hoist and mount protection device is used in large-scale power equipment installation, bring the operation of sound contact through trigger electrode, the sound contact drives the push rod motion, the cooperation of rethread fixture block and draw-in groove is used, thereby reach the effect of speed limit protection, electrorheological fluids becomes when the rotational speed of drum is too fast when the speed limit effect that solid-state pair dead axle played is not obvious, the centrifugal force that trigger electrode received this moment is greater than reset spring one's traction force, trigger electrode and sound contact electrical contact, the push rod circular telegram drives the outside motion of fixture block this moment, thereby real and draw-in groove joint.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partially enlarged view of the portion A of FIG. 1 according to the present invention;

FIG. 3 is a partially enlarged view of the portion B shown in FIG. 1 according to the present invention;

fig. 4 is a schematic diagram of a fixture block according to the present invention.

In the figure: 1. a card holder; 2. a card slot; 3. a push rod; 4. wire coils; 5. electrorheological fluid; 6. a conductive post; 7. fixing a shaft; 8. a liquid accumulation tank; 9. a stationary contact; 10. a trigger electrode; 11. a first return spring; 12. a positive plate; 13. a second return spring; 14. a negative plate; 15. a voltage dependent resistor; 16. a dielectric plate; 17. and (7) clamping blocks.

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. 1-4, a hoisting protection device for large-scale power equipment installation comprises a clamping seat 1, a clamping groove 2 is formed in the inner wall of the middle of the clamping seat 1, a wire coil 4 is movably connected to the inner wall of the middle of the wire coil 1, a stationary contact 9 is fixedly connected to the inner wall of the middle of the wire coil 4, a trigger electrode 10 is movably connected to the inner wall of the middle of the wire coil 4, a first return spring 11 is fixedly connected to the inner side of the trigger electrode 10, the size of the first return spring 11 is smaller than that of the trigger electrode 10, a centrifugal groove matched with the trigger electrode 10 is formed in the inner wall of the middle of the wire coil 4, a dielectric plate 16 is fixedly connected to the inner wall of the middle of the trigger electrode 10, the size of the dielectric plate 16 is smaller than that of the trigger electrode 10, the size of the dielectric plate 16 is larger than that of a positive plate 12 and a negative plate 14, when the trigger electrode 10 is subjected to centrifugal force, the movement of the dielectric plate 16 is driven, so as to change the relative area of the positive plate 12 and the negative plate 14, the magnitude of the voltage at the tail end of the negative plate 14 is changed, the inner side of the trigger electrode 10 is fixedly connected with a second reset spring 13, the inner side of the trigger electrode 10 is fixedly connected with the second reset spring 13, the trigger electrode 10 moves outwards under the action of centrifugal force, and when the centrifugal force applied to the trigger electrode 10 is larger than the traction force of the first reset spring 11;

at the moment, the trigger electrode 10 is in electrical contact with the stationary contact 9, so that the push rod 3 expands outwards to drive the fixture block 17 to move, the inner wall of the middle part of the wire coil 4 is movably connected with the push rod 3, the fixture block 17 is fixedly connected with the outer side of the push rod 3, the size of the fixture block 17 is smaller than that of the wire coil 4, the fixture block 17 moves outwards under the action of the push rod 3 and is clamped with the clamping groove 2, so that the wire coil 4 is limited and protected, the wire coil 4 is prevented from continuously rotating under the traction of a rope, the inner wall of the middle part of the wire coil 4 is fixedly connected with the negative plate 14, the inner wall of the middle part of the wire coil 4 is fixedly connected with the positive plate 12, the positive plate 12 and the negative plate 14 have the same size, the positive plate 12 and the negative plate 14 mainly play a role in controlling the end voltage of the piezoresistor 15, so as to realize the state conversion of the control current 5, the liquid accumulation groove 8 is arranged in the middle part of the wire coil 4, and the electrorheological liquid 5 is movably connected with the electrorheological liquid, the inner wall of the middle part of the wire coil 4 is fixedly connected with a piezoresistor 15, the piezoresistor 15 is electrically connected with the negative plate 14, and when the voltage at the tail end of the negative plate 14 reaches the maximum voltage;

at the moment, the piezoresistor 15 reaches the maximum path voltage, the maximum path voltage at the tail end of the piezoresistor 15 is smaller than the maximum path voltage at the tail end of the negative plate 14, the inner wall of the wire coil 4 is movably connected with a fixed shaft 7, the inner wall of the middle part of the fixed shaft 7 is fixedly connected with a conductive column 6, the size of the conductive column 6 is smaller than that of the fixed shaft 7, the conductive column 6 is electrically contacted with the electrorheological fluid 5, after the conductive column 6 is electrified, the electrorheological fluid 5 is changed from a liquid state to a solid state, so that the resistance of the fixed shaft 7 and the electrorheological fluid 5 is increased, the reduction of the rotating speed of the wire coil 4 is realized, and the speed limiting effect is achieved.

The working principle is as follows: when equipment is hoisted, the fixed shaft 7 is in a fixed state, the wire coil 4 rotates along the outer side of the fixed shaft 7, because the inner wall of the middle part of the wire coil 4 is provided with the liquid accumulation groove 8, the outer side of the fixed shaft 7 also rotates along the inner wall of the liquid accumulation groove 8, and because the electrorheological fluid 5 is in a liquid state, the friction force borne by the fixed shaft 7 is smaller, during normal hoisting, the wire coil 4 runs at a constant speed, the centrifugal force applied to the trigger electrode 10 is smaller than the traction force of the second return spring 13, the dielectric plate 16 is in a static state, when the speed of the wire coil 4 is in a non-uniform speed state, the traction force applied to the trigger electrode 10 is continuously changed, when the traction force applied to the trigger electrode 10 is greater than that of the second return spring 13, the original minimum relative area of the negative electrode plate 14 and the positive electrode plate 12 is gradually changed to be maximum, and the voltage at the tail end of the negative electrode plate 14 is increased;

reach piezoresistor 15's maximum access voltage this moment, thereby make it is in the access state to lead electrical pillar 6, electrorheological fluid 5 changes solid state into by liquid this moment, the resistance that receives in the dead axle 7 outside this moment is great, thereby make drum 4 rotational speed descend, thereby reach the purpose of speed reduction, electrorheological fluid 5 becomes when drum 4's rotational speed is too fast when the speed limit effect that solid state played to dead axle 7 is not obvious, the centrifugal force that trigger electrode 10 received this moment is greater than reset spring 11's traction force, trigger electrode 10 and stationary contact 9 electric contact, push rod 3 circular telegram drives fixture block 17 lateral movement this moment, thereby real and the 2 joints of draw-in groove, because cassette 1 is in fixed state, drum 4 stall under the effect of fixture block 17 this moment, thereby realize the purpose of protection.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.