Operating mechanism for subway isolating switch

Abstract

An operating mechanism for a subway isolating switch relates to the technical field of isolating switches, and solves the problem that the existing isolating switch operating mechanism is large in depth size on a tunnel wall surface and is easy to cause wire invasion. Comprising a box body, a connector, a driving assembly and a control system, the driving assembly and the control system which are connected through a cable are arranged in the box body, the control system controls the working state of the driving assembly, the driving assembly comprises a motor, a flattening speed reducer and an output shaft, the flattening speed reducer is fixed in the box body, and the output shaft is fixed in the box body. The motor is vertically arranged and connected with the input end of the flattening speed reducer, the lower end of the output shaft is fixedly connected with the output end of the flattening speed reducer, and the upper end of the output shaft penetrates out of the top of the box body and then is connected with a connector located above the box body. The utility model provides a relatively thin operating mechanism, which can avoid the problem of wire invasion of the isolating switch operating mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of isolating switches, in particular to an operating mechanism for subway isolating switches. Background Art

[0002] In recent years, with the development of the rail transit market, the drawbacks of the original disconnector operating mechanism have been gradually exposed. That is, the subway disconnector is generally installed on the tunnel wall, close to the line, and the depth of the conventional disconnector operating mechanism is large. A two-stage worm gear reduction motor operating mechanism with the authorization announcement number CN201163577Y includes a box, a motor and a two-stage worm gear integrated reducer, an output shaft, secondary components and wires, etc. The box is a three-door structure, that is, there are doors on the front and both sides respectively, the top cover of the box is a rotary pull structure, and a cable hole is provided at the bottom of the box. The secondary components and wires are installed on the inner side of the door of the box, and a mounting plate is provided inside the box. The motor and the two-stage worm gear reducer are installed on the mounting plate, the manual locking device and the output shaft are fixedly connected to the reducer, and the limit device is sleeved on the output shaft and connected to the reducer. The above-mentioned operating mechanism adopts a two-stage worm gear reducer. Due to the size and installation method of the two-stage worm gear reducer, the entire operating mechanism is very likely to cause line invasion risks.

[0003] At present, the standard requirement for the disconnector opening and closing signals in the rail transit field is "no closing and opening position indications and position signals should be issued unless the moving contact reaches its closing or opening position respectively". However, the operating mechanisms of disconnectors on the market generally cut off the power supply when the travel switch is in place, and the auxiliary switch provides the opening and closing position signals. Since this solution provides signals for two independent components and the auxiliary switch itself has structural limitations, the opening and closing position signals cannot meet the standard requirements. Major manufacturers have proposed a solution to achieve the signal requirements by connecting multiple travel switches in parallel. However, because their multiple normally closed contacts are connected in parallel, excessive contact waste and switching delays occur between contacts.

[0004] Therefore, it is particularly important to design an ultra-thin operating mechanism for disconnectors that meets the signal requirements in the rail transit field. Utility Model Content

[0005] The utility model aims to provide an operating mechanism for a subway disconnector, which is used to solve the problem that the existing disconnector operating mechanism is easy to cause wire invasion when the tunnel wall has a large depth.

[0006] The utility model solves the technical problem by adopting the following technical scheme: an operating mechanism for a subway isolating switch, comprising a box, a joint, a driving assembly and a control system, wherein the box has a driving assembly and a control system connected by a cable, wherein the control system controls the working state of the driving assembly, wherein the driving assembly comprises a motor, a flattened reducer and an output shaft, wherein the flattened reducer is fixed in the box, wherein the motor is vertically arranged and connected to the input end of the flattened reducer, wherein the lower end of the output shaft is fixedly connected to the output end of the flattened reducer, and wherein the upper end of the output shaft passes through the top of the box and is connected to the joint located above the box.

[0007] Furthermore, a box door is arranged on the front wall of the box body, and the thickness of the box body is 190 mm.

[0008] Furthermore, the drive assembly also includes an upper curved plate and a lower curved plate arranged up and down, and the upper curved plate and the lower curved plate are fixed in the box body by bolts; the flattened reducer is located between the upper curved plate and the lower curved plate, and the upper curved plate and the lower curved plate clamp and fix the flattened reducer.

[0009] Furthermore, the rear wall of the box body has a mounting plate, and the upper curved plate and the lower curved plate are fixedly connected to the mounting plate.

[0010] Furthermore, the drive component also includes a high-reliability multi-contact travel switch, the normally closed point of the high-reliability multi-contact travel switch is connected to the control system via a cable, and a stopper is fixed to the lower end of the output shaft. When the stopper contacts the normally closed point of the high-reliability multi-contact travel switch, the control system controls the drive component to stop moving.

[0011] Furthermore, a mechanical limit bolt is fixed on the lower curved plate, and the mechanical limit bolt limits the rotation of the stopper.

[0012] Furthermore, a manual locking device is fixedly installed at the handle socket position of the flat reducer, and the manual locking device includes a universal switch and a locking plate. The universal switch has two modes, manual and electric. When the universal switch points to the electric mode, the locking plate blocks the handle socket of the flat reducer; when the universal switch points to the manual mode, the handle socket of the flat reducer is exposed.

[0013] Furthermore, the box body has a magnetically controlled lamp, and the inner wall of the box door has a magnet; after the box door is closed, the magnet turns off the magnetically controlled lamp; after the box door is opened, the effect of the magnet on the magnetically controlled lamp is released, and the magnetically controlled lamp becomes brighter.

[0014] Furthermore, a handle is hung on the inner wall of the box door, and the handle is used to be inserted into the handle insertion hole of the flattening reducer to drive the flattening reducer to operate.

[0015] Furthermore, the box is provided with a temperature and humidity sensor and an intelligent dehumidification device, both of which are connected to a control system. When the temperature and humidity sensor detects that the humidity in the box exceeds a set threshold, the control system starts the intelligent dehumidification device to dehumidify the box.

[0016] The beneficial effect of the utility model is that the utility model reduces the space occupied by the box body by setting a flat reducer, so that the thickness of the box body can be achieved to 190 mm, which is greatly reduced in thickness compared with the operating mechanism in the prior art, thereby avoiding the problem of line invasion caused by the large depth of the disconnector into the tunnel wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 It is a left view of the utility model;

[0019] Figure 3 This is the front view of the utility model after the box door is opened;

[0020] Figure 4 This is a three-dimensional diagram of the utility model after the box door is opened;

[0021] Figure 5 This is a cross-sectional view of the connector of the utility model;

[0022] Figure 6 It is a three-dimensional diagram of the drive assembly of the utility model;

[0023] In the figure: 1 connector, 2 nameplate, 3 box body, 4 mounting plate, 5 box body grounding bolt, 6 door handle, 7 drive assembly, 8 control system, 9 terminal block, 10 temperature and humidity sensor, 11 handle, 12 magnet, 13 grounding copper busbar, 14 wire entry hole, 15 intelligent dehumidification device, 16 shaft pin, 17 first skeleton oil seal, 18 output shaft, 19 second skeleton oil seal, 20 upper bending plate, 21 lower bending plate, 22 mechanical limit bolt, 23 high reliability multi-contact travel switch, 24 stopper, 25 flat reducer, 26 manual locking device, 27 ten thousand rpm switch, 28 locking plate. DETAILED DESCRIPTION

[0024] like Figures 1 to 6 As shown, the utility model includes a joint 1, a box body 3, a driving component 7, a temperature and humidity sensor 10 and an intelligent dehumidification device 15. The utility model is described in detail below in conjunction with the accompanying drawings.

[0025] like Figures 1 to 3As shown, the box body 3 is the basic component of the utility model. The box body 3 is made of 304 brushed stainless steel, and the thickness of the box body 3 is 190m. The box body 3 of the utility model has a small thickness. Compared with the operating mechanism in the prior art, it reduces the requirement for installation space and can better adapt to the installation on the wall of the subway tunnel. The mechanical collision protection level of the box body 3 is IK10, and the overall dustproof and waterproof level reaches IP66. The surface of the box body is sprayed with a protective film liquid, which is corrosion-resistant and does not leave fingerprints. A box door is provided on the front side of the box body 3. The door of the box body 3 and the top cover of the box body 3 are sprayed with polyurethane foam sealant and adopt high-quality stainless steel waterproof and breathable valves. A handle 11 is placed on the inner wall of the door of the box body 3, and the handle 11 is hung on the door for easy picking. A nameplate 2 is provided on the door of the box body 3, and the nameplate 2 records the parameters of the operating mechanism. A door handle 6 is provided on the door of the box body 3, and the door handle 6 can realize the padlock function to prevent unauthorized personnel from operating by mistake. As shown Figure 2 As shown, a box grounding bolt 5 is provided inside the box 3, and a part of the box grounding bolt 5 extends out of the box 3. A grounding copper bar 13 is also provided inside the box 3, and four wire inlet holes 14 are provided at the bottom of the box 3. A magnet 12 is provided on the door of the box 3, and the magnet 12 is located on the inner wall of the door. A mounting plate 4 is provided on the rear side of the box 3, and the mounting plate 4 is fixed on the rear side wall of the box 3. The mounting plate 4 is provided to provide support for the installation of parts in the box 3. The provision of the mounting plate 4 also facilitates the assembly of the entire box and the tunnel wall.

[0026] like Figures 1 to 4 As shown, the top of the box body 3 has a joint 1, such as Figure 5 As shown, the lower end of the connector 1 is provided with a vertically arranged output shaft 18, and the upper end of the output shaft 18 is rotatably connected to the connector 1 through the shaft pin 16; the upper end of the connector 1 is used to connect with the transmission mechanism of the disconnector. The output shaft 18 is arranged vertically, which can meet the use requirements of most disconnectors. Its output angle can be adjusted arbitrarily within the range of 0° to 190°, and can ensure the accuracy and synchronization of the disconnector position signal. In order to ensure the waterproof performance between the shaft pin 16 and the connector 1, a second skeleton oil seal 19 is provided at the connection between the shaft pin 16 and the connector 1 for sealing, and a first skeleton oil seal 17 is provided between the connector 1 and the box body 3 for sealing. Through the arrangement of the first skeleton oil seal 17 and the second skeleton oil seal 19, the waterproof and dustproof sealing of the connector is achieved, and the interior of the box body 3 is ensured to be dry and clean.

[0027] like Figure 3 As shown, a driving assembly 7 is provided in the housing 3, and the output shaft 18 is driven to rotate by the driving assembly 7. Figure 6As shown, the drive assembly 7 includes an upper curved plate 20, a lower curved plate 21, a flattened reducer 25, a high-reliability multi-contact travel switch 23 and a manual locking device 26. The upper curved plate 20 and the lower curved plate 21 are arranged up and down, and the flattened reducer 25 is located between the upper curved plate 20 and the lower curved plate 21. The upper curved plate 20 and the lower curved plate 21 cooperate to clamp and fix the flattened reducer 25, which effectively improves the torsion resistance of the flattened reducer 25. The flattened reducer 25 has a smaller thickness dimension in terms of structural shape, and the flattened reducer 25 can be configured with motors of various voltage levels, and the motor is placed vertically, which effectively reduces the impact on the depth dimension of the operating mechanism. By reducing the thickness dimension of the drive assembly, the thickness dimension of the entire operating mechanism is reduced, thereby achieving the purpose of designing an ultra-thin (ultra-thin means a significant reduction in size relative to the existing operating mechanism) operating mechanism of the utility model.

[0028] The output end of the flattened reducer 25 is connected to the lower end of the output shaft 18 through a flat key, and then the rotational motion output by the motor is transmitted to the output shaft 18 after the speed is adjusted by the flattened reducer 25, driving the rotation of the output shaft 18. A stopper 24 is fixed at the lower end of the output shaft 18, and the upper curved plate 20 and the lower curved plate 21 are both located in the box body 3, and the upper curved plate 20 and the lower curved plate 21 are fixedly connected to the mounting plate 4 through bolts, and the upper curved plate 20 and the box body 3 and the lower curved plate 21 and the box body 3 are sealed with a silicone rubber sealing ring. Two high-reliability multi-contact travel switches 23 arranged on the left and right are installed on the lower curved plate 21. During electric operation, the motor rotates to drive the stopper 24 on the output shaft 18 to rotate. After the stopper 24 is in place, the high-reliability multi-contact travel switch 23 is pressed to switch, cutting off the electric self-holding circuit of the operating mechanism to realize the stop of the operating mechanism in place, and providing an isolation switch position signal that is completely consistent with the state of the operating mechanism, solving the problem of asynchronism of the traditional auxiliary switch signal. The stopper 24 is located between the two high-reliability multi-contact travel switches 23. The normally closed point of the high-reliability multi-contact travel switch 23 is connected to the control system 8 through a control cable. When the stopper 24 contacts the normally closed point of the high-reliability multi-contact travel switch 23, the control system 8 controls the operating mechanism to stop in place. At this time, the normally open point of the high-reliability multi-contact travel switch 23 provides the background with a synchronous action isolating switch opening and closing position signal.

[0029] A mechanical limit bolt 22 is fixedly installed on the lower curved plate 21. When the operating mechanism fails and continues to rotate, the mechanical limit bolt 22 can limit the switch damage caused by the over-position of the operating mechanism. Specifically, the mechanical limit bolt 22 contacts the stopper 24 to limit the rotation of the stopper 24, and then limits the rotation of the output shaft 18. A manual locking device 26 is fixedly installed at the handle jack position of the flattened reducer 25. The manual locking device 26 includes a universal switch 27 and a locking plate 28. The universal switch 27 has two modes: manual and electric. The traditional crimping stroke switch is replaced by a universal switch 27 with a locking plate 28. The locking plate 28 is opened by rotating the universal switch 27, and the handle 11 is docked with the handle jack of the flattened reducer 25 to achieve manual operation. When operating electrically, the universal switch 27 is rotated to the electric operation position. The universal switch has no intermediate position, which effectively avoids the problem of being unable to operate electrically due to the original stroke switch not being switched in place. Through this set of drive components, the depth dimension of the operating mechanism is effectively reduced, and the performance of the mechanism product is improved.

[0030] like Figure 4 As shown, a control system 8 is provided in the box 3. The control system 8 uses an integrated module. The integrated module adopts power electronics and relay protection technology to simplify internal wiring and replace discrete components such as contactors, intermediate relays, buttons, knobs, motor protectors, and phase sequence protectors. The integrated module can also adapt to control power supplies of different voltage levels, occupy a small space, have a long service life, and have an easy-to-maintain aviation plug design; or the traditional control method of the original discrete components can be used, using contactors, buttons, knobs, motor protectors, heaters, etc. for control, with a relatively low cost, and the brand can be specified according to user requirements. A single component can be replaced separately if it is damaged, and the maintenance cost is low.

[0031] like Figure 4 As shown, a magnetically controlled lamp is arranged in the box 3. When the door of the box 3 is open, the magnet 12 moves away from the box 3, and the magnetically controlled lamp lights up. After the door is closed, the magnet 12 moves closer to the box 3, and the magnetically controlled lamp turns off, which improves the convenience of maintenance and repair for operation and maintenance personnel. The magnetically controlled lamp can be adapted to AC / DC90-242V to meet most usage environments without the need for separate leads. An intelligent dehumidification device 15 is arranged in the box 3, as shown in FIG. Figure 3 As shown, a temperature and humidity sensor 10 is provided to monitor the temperature and humidity inside the box 3. The temperature and humidity sensor 10 is also arranged inside the box 3. The water vapor inside the box 3 is discharged through the condenser inside the intelligent dehumidification device 15, which effectively avoids the corrosion of the components inside the box 3 and the condensation inside the box 3. Of course, a heater can also be selected for dehumidification, which is suitable for relatively dry occasions. The terminal block 9 is installed on the front left side of the box 3 to improve the convenience of external wiring and maintenance for users.

[0032] Compared with the prior art, the box body of the utility model adopts a single-door design, and the box door is set on the front side of the box body for easy opening. The utility model can provide a completely reliable position signal that meets the standard requirements, effectively reduce the installation and operation space required for the operating mechanism, greatly avoid the risk of line invasion, and can be better applied in some narrow spaces. The various parts of the utility model adopt excellent sealing technology, and the overall dust and water resistance level of the product reaches IP66, which effectively meets the requirements of the harsh use environment of the operating mechanism. While ensuring the ultra-thin design, the interior of the utility model can be equipped with various well-known brands of electrical components at home and abroad, with rich configuration and strong customizability.

Claims

1. An operating mechanism for a subway disconnector, comprising a box, a joint, a drive assembly and a control system, wherein the box has a drive assembly and a control system connected by a cable, and the control system controls the working state of the drive assembly, characterized in that: The driving assembly includes a motor, a flattened reducer and an output shaft. The flattened reducer is fixed in a box body. The motor is vertically arranged and connected to the input end of the flattened reducer. The lower end of the output shaft is fixedly connected to the output end of the flattened reducer. The upper end of the output shaft passes through the top of the box body and is connected to a joint located above the box body.

2. The operating mechanism for a subway disconnector according to claim 1, characterized in that: The front wall of the box body is provided with a box door, and the thickness of the box body is 190 mm.

3. The operating mechanism for a subway disconnector according to claim 1, characterized in that: The drive assembly also includes an upper curved plate and a lower curved plate arranged up and down, and the upper curved plate and the lower curved plate are fixed in the box body by bolts; the flattened reducer is located between the upper curved plate and the lower curved plate, and the upper curved plate and the lower curved plate clamp and fix the flattened reducer.

4. The operating mechanism for a subway disconnector according to claim 3, characterized in that: The rear wall of the box body is provided with a mounting plate, and the upper curved plate and the lower curved plate are fixedly connected to the mounting plate.

5. The operating mechanism for a subway disconnector according to claim 4, characterized in that: The drive component also includes a high-reliability multi-contact travel switch, the normally closed point of the high-reliability multi-contact travel switch is connected to the control system via a cable, a stopper is fixed to the lower end of the output shaft, and when the stopper contacts the normally closed point of the high-reliability multi-contact travel switch, the control system controls the drive component to stop moving.

6. The operating mechanism for a subway disconnector according to claim 5, characterized in that: A mechanical limit bolt is fixed on the lower curved plate, and the mechanical limit bolt limits the rotation of the stopper.

7. The operating mechanism for a subway disconnector according to claim 1, characterized in that: A manual locking device is fixedly installed at the handle socket position of the flat reducer, and the manual locking device includes a universal switch and a locking plate. The universal switch has two modes, manual and electric. When the universal switch points to the electric mode, the locking plate blocks the handle socket of the flat reducer; when the universal switch points to the manual mode, the handle socket of the flat reducer is exposed.

8. The operating mechanism for a subway disconnector according to claim 2, characterized in that: The box body is provided with a magnetically controlled lamp, and the inner wall of the box door is provided with a magnet; after the box door is closed, the magnetically controlled lamp is turned off by the action of the magnet; after the box door is opened, the action of the magnet on the magnetically controlled lamp is released, and the magnetically controlled lamp becomes brighter.

9. The operating mechanism for a subway disconnector according to claim 8, characterized in that: A handle is hung on the inner wall of the box door, and the handle is used to be inserted into the handle insertion hole of the flattening reducer to drive the flattening reducer to operate.

10. The operating mechanism for a subway disconnector according to claim 1, characterized in that: The box is provided with a temperature and humidity sensor and an intelligent dehumidification device, both of which are connected to a control system. When the temperature and humidity sensor detects that the humidity in the box exceeds a set threshold, the control system starts the intelligent dehumidification device to dehumidify the box.

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