阅读说明：本技术 一种用于充气型电气设备的失压闭锁装置 (Decompression locking device for inflatable electrical equipment ) 是由 贺晓红 王建平 余鹏 于 2020-06-24 设计创作，主要内容包括：本发明是一种用于充气型电气设备的失压闭锁装置,包括气箱,气箱一侧装有外壳,外壳内装有操作机构,所述操作机构执行动作的一侧设有挡板,挡板一端设有与外壳转动连接的转轴,转轴上设有扭簧,挡板相对操作机构的另一侧设有旋转支架,旋转支架上设有用于限制挡板旋转的止挡部,旋转支架一侧设有弹簧,弹簧用于将止挡部推向限制挡板旋转的位置,所述外壳内位于旋转支架下方设有一根上下滑动的闭锁杆,闭锁杆上设有挡块；所述气箱壁上装有一气缸体,气缸体内端与气箱连通,外端与外壳内部连通,气缸体内装有活塞,气缸体内设有用于将活塞向气箱内推动的压簧B,活塞外端设有伸入外壳的顶杆；本发明可靠性强,结构更简单,制造成本更低。(The invention relates to a decompression locking device for inflatable electrical equipment, which comprises an air box, wherein a shell is arranged on one side of the air box, an operating mechanism is arranged in the shell, a baffle is arranged on one side of the operating mechanism for executing action, a rotating shaft which is rotatably connected with the shell is arranged at one end of the baffle, a torsional spring is arranged on the rotating shaft, a rotating support is arranged on the other side of the baffle, which is opposite to the operating mechanism, a stopping part for limiting the rotation of the baffle is arranged on the rotating support, a spring is arranged on one side of the rotating support and used for pushing the stopping part to the position for limiting the rotation of the baffle, a locking rod which slides up and down is arranged; a cylinder body is arranged on the wall of the air tank, the inner end of the cylinder body is communicated with the air tank, the outer end of the cylinder body is communicated with the inside of the shell, a piston is arranged in the cylinder body, a pressure spring B for pushing the piston into the air tank is arranged in the cylinder body, and a mandril extending into the shell is arranged at the outer end of the piston; the invention has the advantages of strong reliability, simpler structure and lower manufacturing cost.)

1. A decompression locking device for an inflatable electrical device comprises an air box, wherein a shell is arranged on one side of the air box, and an operating mechanism is arranged in the shell, and the decompression locking device is characterized in that: the device comprises an operating mechanism, a baffle plate, a rotating shaft, a spring, a locking rod and a locking rod, wherein the baffle plate is arranged on one side of the operating mechanism, the rotating shaft is rotatably connected with a shell and is provided with a torsional spring, the torsional spring applies force to one side of the operating mechanism by the baffle plate, the rotating bracket is arranged on the other side of the baffle plate, which is opposite to the operating mechanism, and is rotatably connected with the shell, a stopping part for limiting the rotation of the baffle plate is arranged on the rotating bracket, the spring is arranged on one side of the rotating bracket and is used for pushing the stopping part to the position for limiting the rotation of the baffle plate, a locking rod which slides; the gas cylinder is characterized in that a gas cylinder body is arranged on the wall of the gas cylinder body, the inner end of the gas cylinder body is communicated with the gas cylinder, the outer end of the gas cylinder body is communicated with the inside of the shell, a piston is arranged in the gas cylinder body, a pressure spring B used for pushing the piston into the gas cylinder is arranged in the gas cylinder body, an ejector rod extending into the shell is arranged at the outer end of the piston, the stop block is clamped by the ejector rod and cannot move downwards when the gas pressure in the gas cylinder is normal, the top end of the locking rod blocks the rotating support, the operating mechanism can normally act, when the gas pressure of the gas cylinder is lower than the pre-pressure of the pressure spring B, the pressure spring B pushes the piston to drive the ejector rod to break away from the stop.

2. The no-voltage locking device for the inflatable electric equipment as claimed in claim 1, wherein: an upper support and a lower support are arranged below the rotating support in the shell, the locking rod is installed on the upper support and the lower support, and the pressure spring A is arranged on the upper support or the lower support.

3. The no-voltage locking device for the inflatable electric equipment as claimed in claim 2, wherein: the shell bottom is equipped with air pressure indicating device, and air pressure indicating device is equipped with the torsional spring including setting up in the backstop frame of dead lock pole bottom and installing the connecting axle on the shell on the connecting axle, connecting axle inner be equipped with backstop frame complex separation blade, the connecting axle outer end stretches out the shell outside and is equipped with the pointer, the shell outside is equipped with the sign, the normal position of the directional sign of pointer when atmospheric pressure is normal, when atmospheric pressure was low excessively, the dead lock pole moves down and makes backstop frame break away from the separation blade, the connecting axle rotates under the torsional spring effect and drives the pointer and remove the decompression position of sign.

4. A no-voltage locking device for an inflatable electric apparatus as claimed in claim 3, wherein: the stop frame is provided with a waist-shaped hole A parallel to the sliding direction of the locking rod, a limiting stud is arranged in the waist-shaped hole A, nuts are respectively arranged on two sides of the stop frame on the limiting stud, and the lower frame is provided with a waist-shaped hole B so as to adaptively adjust the lap joint amount of the blocking piece and the stop frame.

5. The no-voltage locking device for the inflatable electric equipment as claimed in claim 1, wherein: and when the air pressure in the air box is lower than the pre-pressure of the pressure spring B, the rotary bracket presses down the microswitch under the driving of the spring, and the microswitch gives a no-voltage signal to the feeder line terminal to control the electric locking of the operating mechanism.

6. The no-voltage locking device for the inflatable electric equipment as claimed in claim 1, wherein: the outer end of the cylinder body is provided with an adjusting threaded sleeve in threaded connection with the cylinder body, the inner end of the adjusting threaded sleeve is provided with an installation cavity, and the pressure spring B is arranged in the installation cavity.

Technical Field

The invention relates to the technical field of electric power facilities, in particular to a voltage-loss locking device for inflatable electrical equipment.

Background

At present, the inflatable devices used in domestic and foreign electric power systems are various, but the protection to the safety problems such as low pressure and the like which may occur in the running process of the devices is not comprehensive, some low-voltage electric locking devices are arranged, but under the condition that the system is power-off, the electric locking devices cannot normally work, the reliability is insufficient, relatively speaking, the mechanical locking mode is more reliable, and the existing voltage-loss locking device has the following problems: 1. the structure is complex, and the manufacturing cost is high; 2. the air pressure threshold is generally constant and cannot be adapted to different air pressure requirements of different products; 3. some products are not provided with an air pressure indicating device, so that inspection personnel can find faults in time; 4. due to the structural design problem of the product provided with the air pressure indicating device, the product is possible to have a tripping phenomenon due to bumping in the transportation process, the indication is in a decompression state when the product is sent to a user side, the product needs to be returned to a factory for maintenance, and the corresponding cost is increased.

Disclosure of Invention

The main object of the present invention is to provide a no-voltage locking device for an air-filled electrical apparatus, which solves the above-mentioned problems of the conventional no-voltage locking device.

The specific scheme of the invention is as follows: a decompression locking device for an inflatable electrical device comprises an air box, wherein a shell is arranged on one side of the air box, an operating mechanism is arranged in the shell, a baffle is arranged on one side of the operating mechanism for executing motion, a rotating shaft which is rotatably connected with the shell is arranged at one end of the baffle, a torsional spring is arranged on the rotating shaft, the torsional spring applies force to one side of the operating mechanism by the baffle, a rotating support is arranged on the other side of the baffle, which is opposite to the operating mechanism, is rotatably connected with the shell, a stopping part for limiting the rotation of the baffle is arranged on the rotating support, a spring is arranged on one side of the rotating support and used for pushing the stopping part to the position for limiting the rotation of the baffle, a locking rod which slides up and down is arranged below the rotating support in the shell, a pressure; the gas cylinder is characterized in that a gas cylinder body is arranged on the wall of the gas cylinder body, the inner end of the gas cylinder body is communicated with the gas cylinder, the outer end of the gas cylinder body is communicated with the inside of the shell, a piston is arranged in the gas cylinder body, a pressure spring B used for pushing the piston into the gas cylinder is arranged in the gas cylinder body, an ejector rod extending into the shell is arranged at the outer end of the piston, the stop block is clamped by the ejector rod and cannot move downwards when the gas pressure in the gas cylinder is normal, the top end of the locking rod blocks the rotating support, the operating mechanism can normally act, when the gas pressure of the gas cylinder is lower than the pre-pressure of the pressure spring B, the pressure spring B pushes the piston to drive the ejector rod to break away from the stop.

An upper support and a lower support are arranged below a rotating support in the shell, the locking rod is arranged on the upper support and the lower support, and the upper support or the lower support is provided with the pressure spring A.

The air pressure indicating device is arranged at the bottom of the shell and comprises a stop frame arranged at the bottom of the locking rod and a connecting shaft arranged on the shell, a torsional spring is arranged on the connecting shaft, a stop piece matched with the stop frame is arranged at the inner end of the connecting shaft, a pointer is arranged at the outer end of the connecting shaft, which extends out of the shell, a direction board is arranged outside the shell, the pointer points to the normal position of the direction board when the air pressure is normal, when the air pressure is too low, the locking rod moves downwards to enable the stop frame to be separated from the stop piece, and the connecting shaft rotates under the action of the torsional spring to drive the.

The stop frame is provided with a waist-shaped hole A parallel to the sliding direction of the locking rod, a limiting stud is arranged in the waist-shaped hole A, nuts are respectively arranged on the limiting stud and positioned on two sides of the stop frame, and the lower frame is provided with a waist-shaped hole B so as to adaptively adjust the lap joint amount of the stop piece and the stop frame.

A microswitch is arranged on one side of a rotary support, the microswitch is electrically connected with an operating mechanism, when the air pressure in an air box is lower than the pre-pressure of a pressure spring B, the rotary support presses down the microswitch under the driving of the spring, the microswitch gives a voltage loss signal to a Feeder Terminal (FTU) to control a brake separating coil of the operating mechanism to be powered off, and an electric locking operating machine prevents the operating mechanism from executing actions.

The outer end of the cylinder body is provided with an adjusting threaded sleeve in threaded connection with the cylinder body, the inner end of the adjusting threaded sleeve is provided with a mounting cavity, and the pressure spring B is arranged in the mounting cavity.

The working principle of the invention is as follows: when the air pressure is lower than the pre-pressure of a pressure spring B, the pressure spring B pushes a piston to move inwards, an ejector rod is separated from a stop block of the locking rod, the locking rod is separated from the rotating support under the action of the pressure spring A, the rotating support rotates under the action of the spring, the stop block is located on the movement track of the baffle at the moment so as to prevent the operating mechanism from executing the action, mechanical locking is realized, and meanwhile, the rotating support presses down a microswitch to prevent the operating mechanism from executing the action through an electric signal, so that electrical locking is realized.

Compared with the prior art, the invention has the following advantages: 1. the dual-protection device has the dual-protection functions of mechanical locking and electrical locking, and is simpler in structure and lower in manufacturing cost; 2. the cylinder body is provided with the adjusting threaded sleeve, the air pressure threshold can be increased by screwing in the adjusting threaded sleeve to increase the pre-pressure of the pressure spring B for a product with a high air pressure threshold, otherwise, the air pressure threshold can be reduced by screwing out the adjusting threaded sleeve, the requirements of different products can be met, and the adjustment is convenient; 3. the lower support is provided with the waist-shaped hole, and the limiting stud is provided with the two nuts, so that the lapping amount is adjusted adaptively, the phenomenon that the lower support is tripped and repaired due to too small lapping amount is avoided, and the stability of product quality is improved.

Drawings

FIG. 1 is a front view showing a normal state of air pressure in the embodiment of the present invention;

FIG. 2 is a view A-A of FIG. 1;

FIG. 3 is a view B-B of FIG. 1;

FIG. 4 is a bottom view of FIG. 1;

FIG. 5 is an enlarged view at V of FIG. 3;

FIG. 6 is a front view of a pressure failure state according to an embodiment of the present invention;

FIG. 7 is a view C-C of FIG. 6;

FIG. 8 is a D-D view of FIG. 6;

FIG. 9 is a bottom view of FIG. 6;

FIG. 10 is a view E-E of FIG. 1;

FIG. 11 is a perspective view of the swivel mount of the present invention;

in the figure: 1-an air box, 2-a microswitch, 3-a spring, 4-a rotating bracket, 41-a stopping part, 5-a baffle, 6-an operating mechanism, 7-a shell, 8-a locking rod, 81-a stopping block, 9-a cylinder body, 91-a piston, 92-a pressure spring B, 93-a top rod, 94-an adjusting screw sleeve, 10-an upper bracket, 11-a pressure spring A, 12-a lower bracket, 13-a stopping bracket, 14-a kidney-shaped hole A, 15-a stopping sheet, 16-a connecting shaft, 17-a torsion spring, 18-a limiting stud, 19-a nut, 20-an indicating plate, 21-a pointer and 22-a kidney-shaped hole B.

Detailed Description

Referring to fig. 1-10, the present embodiment includes an air tank 1, a housing 7 is installed at one side of the air tank 1, an operating mechanism 6 is installed in the housing 7, a baffle 5 is installed at one side of the operating mechanism 6 for performing an operation, a rotating shaft rotatably connected to the housing 7 is installed at one end of the baffle 5, a torsion spring is installed on the rotating shaft, the torsion spring applies a force to one side of the operating mechanism 6 by the baffle, a rotating bracket 4 is installed at the other side of the baffle 5 opposite to the operating mechanism 6, the rotating bracket 4 is rotatably connected to the housing 7, a stopping portion 41 for limiting rotation of the baffle 5 is installed on the rotating bracket 4, a spring 3 is installed at one side of the rotating bracket 4, the spring 3 is used for pushing the stopping portion 41 to a position where the baffle 5 rotates, an upper bracket 10 and a lower bracket 12 are installed below the rotating bracket 4 in the housing 7, a locking rod 8 sliding up and down is installed on the upper, a stop block 81 is arranged on the locking rod 8; the wall of the air box 1 is provided with an air cylinder body 9, the inner end of the air cylinder body 9 is communicated with the air box 1, the outer end of the air cylinder body 9 is communicated with the inside of the shell 7, a piston 91 is arranged in the air cylinder body 9, a pressure spring B92 used for pushing the piston 91 into the air box 1 is arranged in the air cylinder body 9, the outer end of the piston 91 is provided with a push rod 93 extending into the shell 7, when the air pressure in the air box 1 is normal, the stop block 81 is clamped by the push rod 93 and cannot move downwards, the top end of the locking rod 8 blocks the rotating support 4, the operating mechanism 6 can normally act, when the air pressure in the air box 1 is lower than the pre-pressure of the pressure spring B92, the pressure spring B92 pushes the piston 91 to drive the push rod 93 to separate from the stop block 81, the top end of the locking rod 8 separates from the rotating support 4 under.

In this embodiment, a microswitch 2 is arranged on one side of a rotating bracket 4, the microswitch 2 is electrically connected with an operating mechanism 6, when the air pressure in an air box 1 is lower than the pre-pressure of a pressure spring B92, the rotating bracket 4 presses down the microswitch 2 under the driving of a spring 3, the microswitch 2 gives a no-voltage signal to a Feeder Terminal (FTU), the opening coil of the operating mechanism 6 is controlled to be powered off, and the electric locking operating mechanism 6 prevents the operating mechanism 6 from executing actions.

In this embodiment, the outer end of the cylinder block 9 is provided with an adjusting threaded sleeve 94 in threaded connection with the cylinder block 9, the inner end of the adjusting threaded sleeve 94 is provided with a mounting cavity, and the pressure spring B92 is arranged in the mounting cavity.

This embodiment the shell 7 bottom is equipped with air pressure indicating device, and air pressure indicating device is including setting up in the backstop frame 13 of locking lever 8 bottom and installing the connecting axle 16 on shell 7, is equipped with torsional spring 17 on the connecting axle 16, connecting axle 16 the inner be equipped with backstop frame 13 complex separation blade 15, the connecting axle 16 outer end stretches out the shell 7 outside and is equipped with pointer 21, shell 7 outside is equipped with sign 20, the normal position of the directional sign 20 of pointer 21 when atmospheric pressure is normal, when atmospheric pressure is low excessively, locking lever 8 downstream makes backstop frame 13 break away from separation blade 15, connecting axle 16 rotates under torsional spring 17 effect and drives pointer 21 and remove the decompression position of sign 20.

In this embodiment, the stopper frame 13 is provided with a waist-shaped hole a14 parallel to the sliding direction of the locking rod 8, a limiting stud 18 is arranged in the waist-shaped hole a14, nuts 19 are respectively arranged on the limiting stud 18 and positioned on two sides of the stopper frame 13, the lower support 12 is provided with a waist-shaped hole B22, and the direction of the waist-shaped hole B22 is perpendicular to the wall surface of the gas tank 1, so that the overlapping amount L of the blocking piece 15 and the stopper frame 13 changes due to deformation after the gas tank 1 is inflated, and when the overlapping amount is too small, a tripping phenomenon may occur due to bumping in the transportation process, and the distance between the lower end of the locking rod 8 and the wall surface of the gas tank 1 can be adaptively adjusted by adjusting the positions of the two nuts 19, so as to adjust the overlapping amount L of the blocking.