Railway disconnecting switch operating mechanism

Abstract

A railway disconnecting switch operating mechanism comprises a box body, a box door is hinged to the left side of the box body, a worm and gear reducing mechanism and a motor are arranged in the box body, the output end of the worm and gear reducing mechanism extends out of the box body, the first input end of the worm and gear reducing mechanism is driven by the motor, and the second input end of the worm and gear reducing mechanism is driven by a crank. A crank connecting mechanism is arranged in the box body, the crank connecting mechanism comprises a base, a first gear shaft, a second gear shaft and a third gear shaft are horizontally mounted in the base, the first gear shaft is meshed with the second gear shaft, and the second gear shaft is meshed with the third gear shaft; the inner end of the first gear shaft is connected with the second input end, and a crank can be inserted into the outer end of the third gear shaft. According to the utility model, by changing the installation position of the existing isolating switch crank, the installation position of the crank is far away from the hinged side of the box door, so that the manual operation space is increased, the crank cannot interfere with the box door when being rotated, and the normal completion of manual operation is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of disconnectors, and in particular relates to an operating mechanism for a railway disconnector. Background Art

[0002] In the electrified railway traction substation system, the disconnector is an essential power supply equipment. Due to the railway limit, the installation and use space of the disconnector operating mechanism is limited, resulting in the inability to fully open the operating mechanism door, and it is difficult to complete manual operation through the crank. For example, the disconnector operating mechanism is fixed on the pillar according to the construction requirements. In order not to affect the safe driving of the train, the disconnector operating mechanism door is generally opened toward the field side. Due to the railway limit, the door cannot be fully opened, and the crank handle is inserted close to the hinged side of the door. When the crank handle is rotated, the door is easy to interfere, affecting the normal manual operation. Utility Model Content

[0003] The utility model provides a railway isolating switch operating mechanism to overcome the shortcomings of the prior art.

[0004] The technical solution adopted by the utility model is: a railway disconnector operating mechanism, including a box body, a box door is hinged on the left side of the box body, a worm gear reduction mechanism and a motor are arranged in the box body, the output end of the worm gear reduction mechanism extends out of the box body, the first input end is driven by the motor, and the second input end is driven by a crank, a crank connection mechanism is arranged in the box body, and the crank connection mechanism includes a base, a first gear shaft, a second gear shaft and a third gear shaft are horizontally installed in the base, and the first gear shaft is meshed with the second gear shaft, and the second gear shaft is meshed with the third gear shaft; the inner end of the first gear shaft is connected to the second input end, and the outer end of the third gear shaft can be plugged with a crank.

[0005] A manual locking device is provided at the front end of the base, and the manual locking device includes a safety door and a travel switch. The safety door is slidably connected to the front end of the base and blocks the outer end of the third gear shaft. The travel switch is installed on the left side of the base. When the safety door slides to the left to expose the outer end of the third gear shaft, it touches the travel switch to cut off the power of the motor and lock it.

[0006] The manual locking device also includes a reset tension spring, which is horizontally arranged on the right side of the base, and two ends of the reset tension spring are respectively connected to the safety door and the base.

[0007] An arc-shaped notch is recessed on the right side of the safety door.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] 1. The utility model changes the installation position of the existing isolating switch crank handle so that the crank handle is installed away from the hinged side of the box door, thereby increasing the manual operation space. When the crank handle is rotated, it will not interfere with the box door, thereby ensuring the normal completion of manual operation.

[0010] 2. The utility model is provided with a manual locking device, which can prevent accidental electric start-up during manual operation, and can also ensure that human body injuries caused by incorrect installation of the crank handle during electric operation, having a dual protection effect, and at the same time, it also saves the existing manual conversion switch.

[0011] 3. The transmission ratio of the crank connection mechanism of the utility model is greater than one, which increases the output torque and reduces the labor intensity of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural front view of the utility model without the box door;

[0013] Figure 2 This is a structural front view of the crank connection mechanism of the utility model;

[0014] Figure 3 It is a top view of the structure of the crank connection mechanism of the utility model;

[0015] Figure 4 It is a structural sectional view of the crank connection mechanism of the utility model;

[0016] Figure 5 It is a schematic diagram of the manual operation transmission principle of the utility model. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1-5 The utility model is described in detail with specific implementation modes.

[0018] A railway disconnect switch operating mechanism comprises a box body 1, a box door 1-1 is hinged on the left side of the box body 1, a worm gear reduction mechanism 2 and a motor 3 are arranged in the box body 1, an output end 2-1 of the worm gear reduction mechanism 2 extends out of the box body 1, a first input end 2-2 is driven by the motor 3, and a second input end 2-3 is driven by a crank 4, a crank connection mechanism 5 is arranged in the box body 1, and the crank connection mechanism 5 comprises a base 5-1, a first gear shaft 5-2, a second gear shaft 5-3 and a third gear shaft 5-4 are horizontally installed in the base 5-1, and the first gear shaft 5-2 is meshed with the second gear shaft 5-3, and the second gear shaft 5-3 is meshed with the third gear shaft 5-4; the inner end of the first gear shaft 5-2 is connected to the second input end 2-3, and the outer end of the third gear shaft 5-4 can be plugged with the crank 4.

[0019] In order to avoid the motor 3 starting and causing the electric operation to malfunction during manual operation, a manual locking device 6 is provided at the front end of the base 5-1, and the manual locking device 6 includes a safety door 6-1 and a travel switch 6-2. The safety door 6-1 is slidably connected to the front end of the base 5-1 and blocks the outer end of the third gear shaft 5-4. The travel switch 6-2 is installed on the left side of the base 5-1. When the safety door 6-1 slides to the left to expose the outer end of the third gear shaft 5-4, it touches the travel switch 6-2 to cut off the power of the motor 3 and lock it.

[0020] Furthermore, the manual locking device 6 also includes a reset spring 6-3, which is horizontally arranged on the right side of the base 5-1, and both ends of the reset spring 6-3 are respectively connected to the safety door 6-1 and the base 5-1.

[0021] Preferably, an arc-shaped notch 6-4 is recessed on the right side of the safety door 6-1.

[0022] During manual operation, first open the box door 1-1 to the maximum position, then manually slide the safety door 6-1 to the left to expose the outer end of the third gear shaft 5-4, and then insert the crank 4. The arc-shaped notch 6-4 is stuck on the crank 4, and the crank 4 blocks the safety door 6-1 from sliding to the right to reset. At the same time, the safety door 6-1 touches the travel switch 6-2 to cut off the power and lock the motor 3. Rotate the crank 4 to rotate the third gear shaft 5-4, drive the first gear shaft 5-2 to rotate in the same direction through the second gear shaft 5-3, and then drive the worm gear reduction mechanism 2 through the first gear shaft 5-2, and drive the disconnector to open and close through its output end 2-1.

[0023] After the manual operation is completed, the crank 4 is removed, and under the action of the reset spring 6-3, the safety door 7 slides to the right to reset and block the outer end of the third gear shaft 5-4, and the travel switch 6-2 energizes the motor 3, and the electric operation can be started normally.

[0024] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A railway disconnect switch operating mechanism, comprising a box body (1), a box door (1-1) being hinged on the left side of the box body (1), a worm gear reduction mechanism (2) and a motor (3) being arranged in the box body (1), an output end (2-1) of the worm gear reduction mechanism (2) extending out of the box body (1), a first input end (2-2) being driven by the motor (3), and a second input end (2-3) being driven by a crank (4), characterized in that: A crank connection mechanism (5) is arranged in the box body (1), and the crank connection mechanism (5) comprises a base (5-1), a first gear shaft (5-2), a second gear shaft (5-3) and a third gear shaft (5-4) are horizontally installed in the base (5-1), and the first gear shaft (5-2) is meshed with the second gear shaft (5-3), and the second gear shaft (5-3) is meshed with the third gear shaft (5-4); the inner end of the first gear shaft (5-2) is connected to the second input end (2-3), and the outer end of the third gear shaft (5-4) can be plugged with a crank (4).

2. The railway disconnect switch operating mechanism according to claim 1, characterized in that: A manual locking device (6) is provided at the front end of the base (5-1), and the manual locking device (6) comprises a safety door (6-1) and a travel switch (6-2). The safety door (6-1) is slidably connected to the front end of the base (5-1) and blocks the outer end of the third gear shaft (5-4). The travel switch (6-2) is installed on the left side of the base (5-1). When the safety door (6-1) slides to the left and exposes the outer end of the third gear shaft (5-4), it touches the travel switch (6-2) and cuts off the power to lock the motor (3).

3. The railway disconnect switch operating mechanism according to claim 2, characterized in that: The manual locking device (6) further comprises a reset spring (6-3), which is horizontally arranged on the right side of the base (5-1), and the two ends of the reset spring (6-3) are respectively connected to the safety door (6-1) and the base (5-1).

4. The railway disconnect switch operating mechanism according to claim 2 or 3, characterized in that: An arc-shaped notch (6-4) is recessed on the right side of the safety door (6-1).

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