阅读说明：本技术 气缸驱动的接地开关 (Cylinder driven earthing switch ) 是由 汤志强 范永红 袁金柱 黄铜 黄方泽 于 2020-03-27 设计创作，主要内容包括：本发明公开了一种气缸驱动的接地开关,包括：摆动组件、接地转臂以及连接在接地转臂上的用于与灭弧室绝缘子上的接地触头连接或者分离的接地夹,接地转臂的驱动端旋转固定于一旋转轴上,接地转臂的驱动端还与摆动组件连接并在摆动组件的带动下沿旋转轴摆动或旋转以使得接地夹与绝缘子上的接地触头连接或者分离以完成合闸或分闸动作。本发明通过摆动组件驱动接地转臂旋转或摆动使接地开关进行分合闸动作,解决了手动操作不便和操作时费力的难题。(The invention discloses a cylinder-driven grounding switch, which comprises: the driving end of the grounding rotating arm is rotationally fixed on a rotating shaft, and is also connected with the swinging assembly and driven by the swinging assembly to swing or rotate along the rotating shaft so that the grounding clamp is connected with or separated from the grounding contact on the insulator to complete switching-on or switching-off actions. The invention drives the grounding rotating arm to rotate or swing through the swinging component to enable the grounding switch to carry out on-off action, thereby solving the problems of inconvenient manual operation and labor waste during operation.)

1. A cylinder actuated grounding switch comprising: swing subassembly, ground connection rocking arm (1) and connect be used for on ground connection rocking arm (1) with the explosion chamber on ground contact be connected or the ground connection of separation press from both sides (2), the drive end rotation of ground connection rocking arm (1) is fixed in on the rotation axis, the drive end of ground connection rocking arm (1) still with swing subassembly be connected and be in follow under the drive of swing subassembly the rotation axis swing or rotation so that ground connection on press from both sides (2) and the explosion chamber is connected or the separation is in order to accomplish combined floodgate or separating brake action.

2. The cylinder driven earthing switch according to claim 1, characterized in that the earthing arm (1) is L type, the first side of L type is the driving end, and the earthing clip (2) is fixed on the second side of L type.

3. The cylinder-driven earthing switch according to claim 1, characterized in that, the earthing contact on the explosion chamber includes earthing contact upper portion (4) arranged on the busbar at the top of the explosion chamber and earthing contact lower portion (5) arranged on the copper part at the lower part of the explosion chamber, the earthing clamp (2) includes a first earthing clamp and a second earthing clamp, the first earthing clamp and the second earthing clamp are both fixed on the earthing rotating arm (1), the earthing rotating arm (1) swings or rotates so that when the earthing clamp (2) is connected with or separated from the earthing contact on the explosion chamber, the earthing contact upper portion (4) is connected with or separated from the first earthing clamp, and the earthing contact lower portion (5) is connected with or separated from the second earthing clamp.

4. The cylinder actuated grounding switch of claim 1, wherein said wobble assembly comprises: the first end of the rotating cylinder or the swinging cylinder is connected with the driving end of the grounding rotating arm (1); the first air path and the second air path of the rotary cylinder or the swing cylinder control air intake or exhaust of the rotary cylinder or the swing cylinder through electromagnetic valves so as to control the rotation or swing direction of the grounding rotating arm (1).

5. The cylinder-driven earthing switch according to claim 4, characterized in that a first throttle and a second throttle are connected to the first air path and the second air path of the rotary cylinder or the oscillating cylinder respectively for adjusting the air flow of the first air path and the second air path to adjust the rotation or oscillation speed of the earthing boom (1).

6. The cylinder-driven grounding switch of claim 5, wherein a first cam (13) and a second cam (14) are arranged at a second end of the rotary cylinder or the swing cylinder, the first cam (13) and the second cam (14) respectively control on/off of a contact of the corresponding quick-acting switch (8), and when the first end of the rotary cylinder or the swing cylinder rotates or rotates, the second end of the rotary cylinder or the swing cylinder drives the first cam (13) and/or the second cam (14) to rotate so as to control the corresponding quick-acting switch (8) to output a specified signal.

7. Cylinder driven earthing switch according to claim 6, characterized in that the number of snap switches (8) corresponds to the height of the first and second cams (13, 14).

Technical Field

The invention relates to the field of electrical control of rail transit vehicles, in particular to a grounding switch driven by a cylinder.

Background

At present, grounding switches used on motor train units and rolling stocks are manually operated, and an operating handle is pulled to disconnect or close a grounding contact (a knife switch) and a grounding reed so as to complete the opening/closing action of the grounding switch. Because there is great vibration impact and needs to guarantee the requirement of great ground connection water conservancy diversion ability among the locomotive vehicle operation process, the clamp force of ground contact and ground connection reed is all generally great, and overall arrangement is compact, operating space is narrow and small simultaneously on the car, leads to personnel's inconvenient operation and operates hard.

Disclosure of Invention

The invention provides a grounding switch driven by an air cylinder, which aims to solve the technical problems of inconvenient operation and labor-consuming operation of a manually operated grounding switch.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

a cylinder actuated grounding switch comprising: the driving end of the grounding rotating arm is rotationally fixed on a rotating shaft, and is also connected with the swinging assembly and driven by the swinging assembly to swing or rotate along the rotating shaft so that the grounding clamp is connected with or separated from the grounding contact on the arc extinguish chamber to complete switching-on or switching-off actions.

As a further improvement of the invention:

the grounding rotating arm is L type, the first side of L type is driving end, and the grounding clip is fixed on the second side of L type.

The grounding contact on the arc extinguish chamber comprises a grounding contact upper part arranged on a busbar on the top of the arc extinguish chamber and a grounding contact lower part arranged on a copper piece on the lower part of the arc extinguish chamber, the grounding clamp comprises a first grounding clamp and a second grounding clamp, the first grounding clamp and the second grounding clamp are both fixed on a grounding rotating arm, the grounding rotating arm swings or rotates to enable the grounding clamp to be connected with or separated from the grounding contact on the arc extinguish chamber, the grounding contact upper part is connected with or separated from the first grounding clamp, and the grounding contact lower part is connected with or separated from the second grounding clamp.

The swing assembly includes: the first end of the rotating cylinder or the swinging cylinder is connected with the driving end of the grounding rotating arm; the first air path and the second air path of the rotary cylinder or the swing cylinder control air intake or exhaust of the rotary cylinder or the swing cylinder through the electromagnetic valve so as to control the rotation or swing direction of the grounding rotating arm.

The first air path and the second air path of the rotary cylinder or the swing cylinder are respectively connected with a first throttle valve and a second throttle valve which are used for adjusting the air flow of the first air path and the second air path so as to adjust the rotating or swinging speed of the grounding rotating arm.

The second end of the rotary cylinder or the swing cylinder is provided with a first cam and a second cam, the first cam and the second cam respectively control the on-off of the contact of the corresponding quick-acting switch, and when the first end of the rotary cylinder or the swing cylinder rotates or rotates, the second end of the rotary cylinder or the swing cylinder drives the first cam and/or the second cam to rotate so as to control the corresponding quick-acting switch to output a specified signal.

The number of the quick-acting switches corresponds to the height of the first cam and the second cam.

The invention has the following beneficial effects:

1. according to the grounding switch driven by the air cylinder, the grounding rotating arm is driven to rotate or swing through the swing assembly, so that the grounding switch is switched on and off, and the problems of inconvenience in manual operation and labor waste in operation are solved.

2. According to the grounding switch driven by the air cylinder, the rotation of the grounding rotating arm is realized through the air cylinder, and the output shaft at one end of the air cylinder drives the grounding rotating arm and the grounding clamp to realize opening and closing actions when rotating; and a cam is arranged on an output shaft at the other end of the air cylinder and controls the quick-acting switch to output a specified signal. The electromagnetic valve is adopted to control the on-off of the air passage of the air cylinder, the opening and closing actions of the grounding switch can be realized by remotely operating the electromagnetic valve, and the automatic control of the opening and closing is realized.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of the general structure of a cylinder driven earthing switch according to the preferred embodiment of the present invention;

FIG. 2 is a schematic top view of FIG. 1;

FIG. 3 is a schematic structural view of a grounding switch cylinder in accordance with a preferred embodiment of the present invention;

the reference numerals in the figures denote:

1. a grounding rotating arm; 2. a grounding clip; 3. a sheath; 4. an upper portion of the ground contact; 5. a ground contact lower portion; 6. a base plate; 7. a cylinder; 8. a quick-acting switch; 9. a grounding safety clamp; 10. a safety knife switch; 11. a ground block; 12. a throttle valve; 13. a first cam; 14. a second cam; 15. a flange; 16. a lock washer; 17. and (7) pressing a plate.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

Fig. 1 is a schematic diagram of the overall structure of the cylinder-driven earthing switch in the present embodiment.

The cylinder driven earthing switch in this embodiment includes: the device comprises a swinging assembly, a grounding rotating arm 1 and a grounding clamp 2 connected to the grounding rotating arm 1 and used for being connected with or separated from a grounding contact on an arc extinguish chamber, wherein the driving end of the grounding rotating arm 1 is rotationally fixed on a rotating shaft, and the driving end of the grounding rotating arm 1 is also connected with the swinging assembly and driven by the swinging assembly to swing or rotate along the rotating shaft so that the grounding clamp 2 is connected with or separated from the grounding contact on the arc extinguish chamber to complete switching-on or switching-off actions. The grounding rotating arm 1 is driven to rotate or swing through the swinging assembly to enable the grounding switch to perform opening and closing actions, an operator remotely operates the electromagnetic valve to realize the opening and closing actions of the grounding switch, the operation is not laborious, the operation space is not limited, and the difficult problems of inconvenience in manual operation and difficulty in operation are solved.

In the present embodiment, referring to fig. 1 and 3, the earthing rotating arm 1 is preferably set to be L type, the first side of L type is the driving end, and the earthing clip 2 is fixed on the second side of L type, preferably, in order to save space, the driving end uses short side of L type, which can make the device occupy smaller space, and referring to fig. 3, the driving end of the earthing rotating arm 1, the locking washer 16, and the output shaft of the first end of the cylinder 7 are connected into a whole by bolts, the locking washer 16 is fixed on the earthing rotating arm 1 by screws or pins, the locking washer 16 is prevented from rotating loose, the bolt head is also provided with the pressing plate 17, which limits the bolt fixing bolt from loosening and retreating, and avoids the earthing rotating arm 1 from loosening or falling off, the output shaft of the first end of the cylinder 7 passes through the inner hole of the flange 15.

In this embodiment, the ground contacts on the arc extinguishing chamber include a ground contact upper portion 4 and a ground contact lower portion 5, the ground clip 2 includes a first ground clip and a second ground clip, when the grounding rotating arm 1 swings or rotates so that the ground clip 2 is connected with or separated from the ground contacts on the arc extinguishing chamber, the ground contact upper portion 4 is connected with or separated from the first ground clip, and the ground contact lower portion 5 is connected with or separated from the second ground clip. Namely, the first grounding clip and the second grounding clip adopt elastic clamping components, when the grounding rotating arm 1 rotates to the switching-on position, the first grounding clip and the second grounding clip clamp the upper part 4 and the lower part 5 of the grounding contact, and the switching-on of the grounding switch is realized. A jacket 3 is also preferably provided on the first grounding clip for improving the insulation between the grounding tumbler 1 and the upper part 4 of the grounding contact on the arc chute and other live parts of the vehicle. In addition, a grounding safety clamp 9 is also installed on the bottom plate, when the grounding rotating arm 1 rotates to a switching-off position, referring to fig. 2, a switching-off safety position is set, when the safety switch 10 on the grounding rotating arm 1 reaches the position, the grounding safety clamp 9 clamps the safety switch 10, the switching-off state of the grounding switch is reliably maintained, the grounding block 11 is connected with the grounding rotating arm 1 through a conductive braided wire, the grounding block 11 is fixed on the bottom plate, and when the grounding switch is switched on, high-voltage electric arcs at a high-voltage inlet/outlet end on the arc extinguish chamber flow into the bottom plate through the first grounding clamp, the second grounding clamp, the grounding rotating arm 1 and the grounding block to realize earth discharge.

In this embodiment, the swing assembly includes: a rotating cylinder or a swinging cylinder (a cylinder 7), wherein the first end of the rotating cylinder or the swinging cylinder is connected with the driving end of the grounding rotating arm 1; the first air path and the second air path of the rotary cylinder or the swing cylinder are separately controlled by two electromagnetic valves or one electromagnetic valve controls the air intake or exhaust of the rotary cylinder or the swing cylinder so as to control the rotation or swing direction of the grounding rotating arm 1. And a first air path and a second air path of the rotary cylinder or the swing cylinder are respectively connected with a first throttle valve and a second throttle valve (generally called throttle valves 12) which are used for adjusting the air flow of the first air path and the second air path so as to adjust the rotating or swinging speed of the grounding rotating arm 1. The rotation of the grounding rotating arm 1 is realized through the air cylinder 7, and an output shaft at one end of the air cylinder 7 drives the grounding rotating arm 1 and the grounding clamp 2 to realize the opening and closing actions when rotating; the electromagnetic valve is adopted to control the on-off of the air circuit of the air cylinder 7, the opening and closing actions of the grounding switch can be realized by remotely operating the electromagnetic valve, and the automatic control of the opening and closing is realized.

In this embodiment, referring to fig. 3, a first cam 13 and a second cam 14 are disposed at a second end of the rotary cylinder or the swing cylinder, the first cam 13 and the second cam 14 respectively control on/off of a contact of the corresponding snap switch 8, and when the first end of the rotary cylinder or the swing cylinder rotates or rotates, the second end of the rotary cylinder or the swing cylinder drives the first cam and the second cam to rotate, and controls the corresponding snap switch 8 to output a predetermined signal. In practice, the number of snap switches corresponds to the height of the first and second cams.

When the grounding rotating arm 1 works, two electromagnetic valves are separately controlled or one electromagnetic valve is used for controlling the first air path and the second air path to carry out air inlet or exhaust, so that the grounding rotating arm 1 rotates or swings to a switching-on position or a switching-off position; the automatic control of the grounding switch is realized, and in the process, the air flow of the first air path and the second air path is adjusted by adjusting the first throttle valve and the second throttle valve so as to adjust the rotating or swinging speed of the grounding rotating arm 1, so that the speed is adapted to the requirements of the site. Before, after, or during the speed adjustment, data may be extracted from the speed switch 8, providing a hardware basis for detecting real-time data and further adjusting the speed.

The cylinder-driven grounding switch in the embodiment is used for driving the grounding rotating arm 1 to rotate when a vehicle is overhauled or an emergency occurs, the first grounding clamp is connected with the upper part 4 of the grounding contact, and the second grounding clamp is connected with the lower part 5 of the grounding contact, so that the high-voltage wire inlet and outlet ends of the vacuum circuit breaker discharge electricity to a vehicle body, the safety of an operator is protected, or the loss caused by vehicle faults is reduced as much as possible; when the vehicle runs normally, the first grounding clip is separated from the upper grounding contact part 4, and the second grounding clip is separated from the lower grounding contact part 5.

In conclusion, the grounding switch driven by the air cylinder drives the grounding rotating arm 1 to rotate or swing through the swinging assembly so as to enable the grounding switch to perform the opening and closing actions, the electromagnetic valve is adopted to control the on-off of the air circuit of the air cylinder 7, the electromagnetic valve is remotely operated to realize the opening and closing actions of the grounding switch, and the problems of inconvenience in manual operation and labor waste in operation are solved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.