Switch movable contact group and movable and static contact device

Abstract

The invention discloses a switch movable contact group and a movable and static contact device, which comprise symmetrical frame structure herringbone swing pieces, the end part of the vertical upper section of each herringbone swing piece is hinged with a movable contact unit through a first connecting shaft, and the center of a transition area is used as the rotating axis of each herringbone swing piece; the corresponding first rotating shaft is positioned and mounted at the lower part of the static contact seat; the rotating axis of the swing head and the rotating axis of the herringbone swing piece are located on the symmetrical faces of the pair of static contact units. In the zero position state, the adapter fixed to the top end of the swing head is symmetrically located in an opening area formed by the left fork section and the right fork section of the herringbone swing piece, and gaps exist between the adapter and the left fork section and between the adapter and the right fork section. The driving mechanism of the movable contact group of the switch is simple in structure and does not involve complex multi-stage transmission of a connecting rod, a sliding block and the like; and when the driving direction is changed, the top end adapter firstly experiences a section of idle stroke in the process of swinging leftwards / rightwards along with the swinging head, so that the reliability in a complex working environment is further improved.

Description

Technical Field

[0001] This application relates to the technical field of railway signal equipment, and particularly relates to a moving contact group and a moving and static contact device of a switch machine. Background Art

[0002] Railway signal equipment is an important basic equipment to ensure railway operation safety and improve transportation efficiency. While the railway signal equipment is working, railway staff are always maintaining the normal condition of the signal equipment. The railway electric switch machine is an important link in railway operation. A typical one is the "S700K" type electric switch machine produced by Siemens. The internal supporting contact group is specifically the Schaltbau contact group or the old TS-1 contact group. After a large number of applications, the switch machine is in good condition, but due to structural design problems of the two supporting contact groups, they cannot adapt to the road surface vibration condition after the speed increase of China's railways. Failures occur frequently, affecting the normal and on-time operation of trains and causing delays, bringing great losses to the transportation of passengers and goods, vehicle turnover, etc.

[0003] Therefore, the industry has made some optimizations to the moving and static contact groups and their related structures. For example:

[0004] Patent document CN106184287A discloses a strengthened contact group for a railway switch machine, as Figure 1As shown in the figure, it includes a mounting plate 10, a bottom plate 9, a plastic bracket 11 and a switch box. An arc extinguishing cover 1 is provided at the upper end of the switch box. The switch is arranged inside the plastic bracket 11. The plastic bracket 11 is arranged on the bottom plate 9, and the bottom plate 9 is arranged on the mounting plate 10. The switch box includes a connecting plate 12, a moving contact 3 and a pair of static contacts 2. The moving contact 3 is movably arranged between the pair of static contacts 2. A connecting rod is provided at the upper end of the connecting plate 12. The moving contact 3 is connected to the connecting rod through a toggle arm. A small tension spring 5 is also provided between the toggle arm and the connecting rod. It also includes a starting claw 8 and a starting frame 7. An opening is provided on the mounting plate 10. One end of the starting claw 8 is hinged to the bottom plate 9, and the other end of the starting claw 8 extends out of the lower end of the mounting plate 10 through the opening. The middle part of the starting frame 7 is hinged to the plastic bracket 11. One end of the starting frame 7 is connected to the plastic bracket 11 through a large tension spring 6. The other end of the starting frame 7 is tightly pressed against the starting claw 8 under the elastic force of the large tension spring 6. A roller cooperating with the connecting plate 12 is also provided at the upper end of the starting frame 7. When the motor rotates and the push plate under the ball screw of the switch machine starts to move, the locking slider starts to move. The inclined plane at the front end of the slider drives the roller of the starting claw 8 to lift upwards, and pushes the starting frame 7 to lift upwards. The front roller of the starting frame 7 gradually pushes the lower connecting plate 12 of the switch box upwards. The moving contact 3 in the switch box also starts to move accordingly. The small tension spring 5 at the middle contact swings from right to left along with the toggle arm of the moving contact 3 and stretches. The contact of the moving contact 3 moves upwards and disconnects after rubbing against the left static contact 2. When the toggle arm passes through the center point, due to the action of the small tension spring 5, the moving contact 3 quickly switches from the left side to contact with the right static contact 2, completing the quick-acting conversion function of the contact. At this time, during the operation of the switch machine, the contact group completes the function of cutting off the original indication and unlocking the switch machine, and starts the conversion operation. When the switch machine rotates to the end point and the detection rod is in place, the large slider at the lower part of the other group of contacts starts to move. Under the reset action of the large tension spring 6, the starting claw 8 drops, and at the same time the tail of the starting frame 7 lifts. The roller pushes the connecting plate 12 upwards. The moving contact 3 quickly contacts the left static contact 2 from the right side, cutting off the action circuit of the switch machine and connecting the new position indication.

[0005] However, in this solution, the large tension spring 6 that maintains a vertical state will have a weakened recovery ability under the action of gravity for a long time, affecting subsequent use, and the structure is relatively complex and not easy to maintain.

[0006] Subsequently, there are also patent documents such as CN 208915184U, CN 219989237U, CN212500416U, etc., which have improved the driving mechanism of the moving contact assembly and designed linkage mechanisms such as multi-stage connecting rods (connecting rods) and sliders. The structure is still relatively complex and the reliability is not ideal enough. Summary of the Invention

[0007] The present application provides a moving contact group and a moving and static contact device for a switch machine, which solves problems such as the relatively complex moving contact driving mechanism in the prior art.

[0008] The solution of this application is as follows:

[0009] A moving contact group of a switch machine includes a moving contact unit and its driving mechanism. The moving contact unit is arranged between a pair of static contact units. The two static contacts of each static contact unit and the two moving contacts of the moving contact unit are arranged vertically. The static contact unit and the static contact base are fixedly installed on the basic bracket. The driving mechanism includes a swing head and a transmission mechanism. The swing head can swing left / right in the lower area between the pair of static contact units, and then drive the moving contact unit to move between the pair of static contact units through the transmission mechanism. Based on the above prior art, the improvement of this application lies in:

[0010] The transmission mechanism includes a top adapter and a chevron swing member;

[0011] The chevron swing member adopts a symmetric frame structure, including a pair of parallel and relatively fixed chevron plate members. The chevron plate members are divided into a vertical upper section, a transition area, a left fork section and a right fork section from top to bottom. Inside the frame structure, the end of the vertical upper section of the chevron swing member is hinged to the moving contact unit through a first connecting shaft. The center of the transition area serves as the rotation axis of the chevron swing member, and the corresponding first rotating shaft is positioned and installed at the lower part of the static contact base;

[0012] The rotation axis of the swing head and the rotation axis of the chevron swing member are located on the symmetry plane of the pair of static contact units. The top adapter is fixedly installed at the top of the swing head. In the zero position state, the top adapter is symmetrically located in the opening area formed by the left fork section and the right fork section, but there is a gap with the left fork section and the right fork section, so that when the top adapter swings left / right with the swing head, it can push the chevron swing member to swing in the opposite direction, and then drive the moving contact unit to contact the right / left static contact unit.

[0013] Optionally, a second connecting shaft is fixedly arranged between the pair of chevron plate members of the chevron swing member. The second connecting shaft is located between the first connecting shaft and the rotation axis of the chevron swing member. A third connecting shaft is also fixedly arranged at the lower part of the static contact base. The third connecting shaft is also located on the symmetry plane of the pair of static contact units with the rotation axis of the chevron swing member. The installation position of the third connecting shaft is not higher than the lower end of the transition area. A tension spring is also arranged between the pair of chevron plate members of the chevron swing member. One end of the tension spring is connected to the second connecting shaft, and the other end is connected to the third connecting shaft.

[0014] Further optionally, the first rotating shaft is divided into two sections, which are respectively connected to the corresponding inner walls of the lower part of the static contact base from the front and back sides of the frame of the chevron swing member, and do not penetrate the frame of the chevron swing member.

[0015] Further optionally, the static contact seat includes an insulating bracket and a housing. The insulating bracket is fixedly installed on the base bracket through the housing. A connecting portion for the chevron swing member is formed by downward extension of the middle part of the insulating bracket, and is specifically used for installing the first rotating shaft and the third connecting shaft.

[0016] Optionally, between the pair of chevron plate members of the chevron swing member, corresponding to the left fork section and the right fork section, they are respectively fastened and connected through a fourth connecting shaft and a fifth connecting shaft.

[0017] Optionally, the top adapter is in the form of a U-shaped groove, and the U opening faces the top of the swing head.

[0018] Optionally, the swing head and the top adapter support the installation of multiple sets of transmission mechanisms, so as to synchronously drive multiple sets of moving contact units to move between corresponding multiple pairs of static contact units.

[0019] Optionally, the inner sides of the left fork section and the right fork section are straight.

[0020] The present application also provides a static and moving contact device for a switch machine, including a static contact group of the switch machine and the above-mentioned moving contact group of the switch machine; the static contact group of the switch machine includes static contact units and a static contact seat. The static contact units are fixed in corresponding installation slots of the static contact seat. The static contact seat includes an insulating bracket and a housing. The insulating bracket is fixedly installed on the base bracket through the housing. A connecting portion for the chevron swing member is formed by downward extension of the middle part of the insulating bracket.

[0021] Preferably, corresponding to each pair of static contact units, the insulating bracket is correspondingly provided with blind hole grooves, and magnetic steels are fixedly arranged in the blind hole grooves. The magnetic steels are close to the static contacts of the static contact units, are insulated from the static contacts and the moving contacts, and are used for arc extinguishing by using electromagnetic physics.

[0022] Compared with the prior art, the present application has at least the following beneficial effects:

[0023] 1. Based on the existing basic drive structure (whose end swings in the lower area between a pair of static contact units, denoted as the "swinging head" in this application), a herringbone swinging member in a symmetric frame form is provided. The end of the upper vertical section of the herringbone swinging member is hinged to the moving contact unit through a first connecting shaft, and the center of the transition area serves as the rotation axis of the herringbone swinging member. Accordingly, the first rotating shaft is positioned and installed at the lower part of the static contact seat; the rotation axis of the swinging head and the rotation axis of the herringbone swinging member are located on the symmetry plane of a pair of static contact units; in the zero position state, the adapter fixed to the top of the swinging head symmetrically lies in the opening area formed by the left fork section and the right fork section of the herringbone swinging member, but there is a gap with the left fork section and the right fork section, so that during the process of the top adapter swinging left / right along with the swinging head, it can stably and reliably push the herringbone swinging member to swing in the opposite direction, thereby driving the moving contact unit to contact the right / left static contact unit. The drive mechanism (swinging head and transmission mechanism) of the moving contact group of this switch machine has a simple structure and does not involve complex multi-stage transmissions such as connecting rods (connecting bars) and sliding blocks.

[0024] 2. In this application, by setting a second connecting shaft and a third connecting shaft, the traction force of the tension spring is cleverly utilized to enable the top adapter of the swinging head to drive the moving contact unit to contact the static contact unit more quickly and reliably when pushing the herringbone swinging member.

[0025] 3. The inventor also noticed that the prior art generally ignored a problem: the vibrations and impacts on the railway often act on the drive end of the moving contact unit. Larger vibrations and impacts may cause the drive mechanism to drive the moving contact unit to displace, thereby affecting the reliability of the contact between the moving contact unit and the static contact unit. In this application, the position and stroke design of the opening area formed by the left fork section and the right fork section of the herringbone swinging member and the top adapter of the swinging head are such that when the driving direction changes, the top adapter will first experience a dead zone during the process of swinging left / right along with the swinging head. Thus, when the vibrations and impacts on the railway act on the basic drive structure, the swinging head swings by a certain amplitude, but does not immediately contact the herringbone swinging member. Therefore, the herringbone swinging member and the moving contact unit still remain stationary.

[0026] 4. In this application, it is also possible to relatively stably maintain the zero position state as needed: when the top adapter is manually operated to stop at the zero position (vertical position) along with the swinging head, the herringbone swinging member can also correspondingly remain in a state close to the zero position, which can more reliably ensure disconnection from the static contact units on both the left and right sides compared to the prior art. That is to say, when the swinging bracket is within a certain angle range in the vertical position, the moving contact will have a safe and reliable disconnection distance state with the static contacts on both the left and right sides simultaneously.

[0027] 5. The arc extinguishing structure is also optimized in this application. Compared with the conventional arc extinguishing cover scheme in the form of multiple slots, a blind hole groove is provided at the position of the static contact of the insulating bracket close to the static contact unit in this application, and a magnetic steel is fixedly arranged in the blind hole groove, achieving the arc extinguishing effect simply and reliably by using electromagnetic physics. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] To more intuitively illustrate the prior art and this application, exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings generally should not be regarded as limiting conditions when implementing this application; for example, those skilled in the art are capable of making routine adjustments or further optimizations to the addition / deletion / attribution division of certain units (components), specific shapes, positional relationships, connection methods, dimensional proportional relationships, etc. based on the technical concept disclosed in this application and the exemplary drawings.

[0029] Figure 1 FIG. 1 is a schematic diagram of an embodiment of the prior art; in the figure, 1. Arc extinguishing cover; 2. Static contact; 3. Moving contact; 4. Reed; 5. Small tension spring; 6. Large tension spring; 7. Starting frame; 8. Starting claw; 9. Base plate; 10. Mounting plate; 11. Plastic bracket; 12. Connecting plate.

[0030] Figure 2 FIG. 2 is a schematic diagram of the installation structure of an embodiment of this application;

[0031] Figure 3 FIG. 3 is a schematic diagram of the herringbone swing member and its related structure in an embodiment of this application;

[0032] Figure 4 FIG. 4 is a schematic diagram of the change in the working state of an embodiment of this application;

[0033] Figure 5 FIG. 5 is a schematic diagram of the structure of the static contact seat in an embodiment of this application (taking a pair of static contact units as an example);

[0034] Figure 6 FIG. 6 is a schematic diagram of the spatial position relationship among the moving contact unit, static contact unit, and magnetic steel in an embodiment of this application; for intuitive illustration, Figure 6 relative to Figure 1 、 Figure 5 shown in the orientation, it is flipped 90 degrees;

[0035] Figure 7 FIG. 7 is a schematic diagram of the application of the embodiment of this application to a three-contact group;

[0036] Figure 8 FIG. 8 is a schematic diagram of the application of the embodiment of this application to a two-contact group;

[0037] Figure 9 FIG. 9 is a schematic diagram of the application of the embodiment of this application to a six-contact group.

[0038] Description of the reference numerals in the embodiments of the present application:

[0039] 1. Moving contact unit; 101. Moving contact; 2. Stationary contact unit; 201. Stationary contact; 3. Stationary contact base; 301. Insulating bracket; 302. Housing; 4. Magnetic steel; 5. Swing head; 501. Rotation axis of the swing head; 6. Top adapter; 7. V-shaped swing member; 8. Third connecting shaft; 9. Tension spring;

[0040] 701. V-shaped plate member; 701a. Upper vertical section; 701b. Transition region; 701c. Left fork section; 701d. Right fork section; 702. First connecting shaft; 703. Rotation axis of the V-shaped swing member; 704. Second connecting shaft; 705. Fourth connecting shaft; 706. Fifth connecting shaft. Detailed implementation manners

[0041] The present application will be further described in detail below with reference to the accompanying drawings and through specific embodiments.

[0042] In the description of the present application: Unless otherwise specified, the meaning of "a plurality" is two or more. The terms "first", "second", "third", etc. in the present application are intended to distinguish the objects being referred to, and do not have special significance in terms of technical connotations (for example, it should not be understood as emphasizing the importance level or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0043] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in the present application are usually indications of the general relative position relationship for the convenience of visually understanding with reference to the accompanying drawings, and are not absolute limitations on the position relationship in the actual product.

[0044] As Figure 2 、 Figure 3 shown, a moving contact group of a switch machine includes a moving contact unit 1 and its driving mechanism. The moving contact unit 1 is arranged between a pair of stationary contact units 2. The two stationary contacts of each stationary contact unit 2 and the two moving contacts of the moving contact unit 1 are arranged vertically up and down. The stationary contact unit 2 and the stationary contact base 3 are fixedly installed on the basic bracket; the driving mechanism includes a swing head 5 and a transmission mechanism. The swing head 5 can swing left / right in the lower region between a pair of stationary contact units 2, and then drive the moving contact unit 1 to move between a pair of stationary contact units 2 through the transmission mechanism; wherein, the mechanical and electrical structures of the moving contact unit 1 and the stationary contact unit 2 can refer to the existing structure design of the S700K type electric switch machine, but the existing entire driving mechanism is relatively complex, and there may be reliability problems during long-term operation.

[0045] In the driving mechanism of this embodiment, its basic driving structure (the end of which swings in the lower area between a pair of static contact units, denoted as the "swinging head" in this application) can directly adopt the basic driving structures of various existing equipment such as the ZD6 series electric switch machines, ZD(J)9 series electric switch machines, and ZY(J)4 type, ZY(J)6 type, ZY(J)7 type electro-hydraulic switch machines, and switch contact checkers. On this basis, the moving contact group of the switch machine in this embodiment mainly improves the transmission mechanism, which includes a top adapter 6 and a herringbone swinging member 7;

[0046] The herringbone swinging member 7 adopts a symmetrical frame structure, including a pair of parallel and relatively fixed herringbone plate members 701; the herringbone plate members 701 are divided into a vertical upper section 701a, a transition area 701b, a left fork section 701c, and a right fork section 701d from top to bottom. Within this symmetrical frame structure, the end of the vertical upper section 701a of the herringbone swinging member 7 is hinged to the moving contact unit 1 through a first connecting shaft 702; the center of the transition area 701b serves as the rotation axis 703 of the herringbone swinging member, and the corresponding first rotating shaft is positioned and installed at the lower part of the static contact seat 3;

[0047] The rotation axis 501 of the swinging head and the rotation axis 703 of the herringbone swinging member are located on the symmetry plane of a pair of static contact units 2; the top adapter 6 is fixedly installed at the top of the swinging head 5. In the zero position state, the top adapter 6 is symmetrically located in the opening area formed by the left fork section 701c and the right fork section 701d, but there is a gap with the left fork section 701c and the right fork section 701d, so that during the process of the top adapter 6 swinging left / right with the swinging head 5, it can stably and reliably push the herringbone swinging member 7 to swing in the opposite direction, thereby driving the moving contact unit 1 to contact the right / left static contact unit 2.

[0048] The moving contact driving mechanism (swinging head and transmission mechanism) of this embodiment has a simple structure, does not involve complex multi-stage transmissions such as connecting rods (connecting bars) and sliding blocks, and the cooperation between the symmetrical frame structure herringbone swinging member and the swinging head is more stable and reliable.

[0049] Optionally, the inner sides of the left fork section 701c and the right fork section 701d are straight (instead of being curved inward or outward).

[0050] Exemplarily, in the zero position state, the gaps between the top adapter 6 and the inner sides of the left fork section 701c and the right fork section 701d can be 0.2 - 5 mm respectively; in the driving completed state (i.e., Figure 4 the two working states shown in the left end illustration and the right end illustration in the figure), the top adapter 6 is absolutely disengaged from the left fork section 701c and the right fork section 701d.

[0051] The inventor also noticed that the prior art generally ignores a problem: vibrations and impacts on the railway often act on the driving end of the moving contact unit. Larger vibrations and impacts may cause the driving mechanism to drive the moving contact unit to displace, thereby affecting the reliability of the contact between the moving contact unit and the static contact unit. In this application, the position and stroke design of the opening area formed by the left fork section and the right fork section of the chevron-shaped swing member and the top adapter of the swing head are such that when the driving direction changes, the top adapter will first experience a dead zone during the left / right swing with the swing head. Therefore, when vibrations and impacts on the railway act on the basic driving structure, the swing head will swing by a certain amplitude, but will not immediately contact the chevron-shaped swing member. Thus, the chevron-shaped swing member and the moving contact unit remain stationary, as Figure 4 shown.

[0052] Moreover, in this embodiment, the moving contact unit can also relatively stably maintain the zero position state as required: when manually operating to make the top adapter stop at the zero position (also called the vertical position, that is Figure 4 the working state shown in the middle of the figure), the chevron-shaped swing member can also correspondingly maintain a state close to the zero position, which can more reliably ensure disconnection from the static contact units on both the left and right sides compared with the prior art. That is to say, when the swing bracket is within a certain angle range of the vertical position, the moving contact will have a safe and reliable disconnection distance state from the static contacts on both the left and right sides at the same time. It should be noted that during the actual normal operation process, only Figure 4 the two working states shown on the left end and the right end in the figure exist, and it will not stop at the middle three states.

[0053] As Figure 3 shown, a second connecting shaft 704 is also fixedly arranged between a pair of chevron-shaped plate members 701 of the chevron-shaped swing member 7. The second connecting shaft 704 is located between the first connecting shaft 702 and the rotation axis 703 of the chevron-shaped swing member; a third connecting shaft 8 is also fixedly arranged at the lower part of the static contact seat 3. The third connecting shaft 8 is also located on the symmetry plane of a pair of static contact units with the rotation axis 703 of the chevron-shaped swing member and the rotation axis 501 of the swing head; the installation position of the third connecting shaft 8 is not higher than the lower end of the transition area 701b; a tension spring 9 is also arranged between a pair of the chevron-shaped plate members 701 of the chevron-shaped swing member 7. One end of the tension spring 9 is connected to the second connecting shaft 704, and the other end is connected to the third connecting shaft 8. By arranging the second connecting shaft and the third connecting shaft, the traction force of the tension spring is cleverly utilized to make the top adapter of the swing head drive the moving contact unit (especially after passing through the zero position) to contact the static contact unit more quickly and reliably when pushing the chevron-shaped swing member.

[0054] The first rotating shaft is divided into two sections, which are respectively connected to the corresponding inner walls of the lower parts of the static contact seat from the front and rear sides of the frame of the chevron swing member 7, without penetrating the frame of the chevron swing member 7. In this way, it is beneficial to leave enough installation space for the tension spring 9.

[0055] In order to make the frame structure of the chevron swing member 7 more stable, between a pair of chevron plate members 701 of the chevron swing member 7, corresponding to the left fork section 701c and the right fork section 701d, they are respectively fixedly connected by a fourth connecting shaft 705 and a fifth connecting shaft 706. Of course, the above frame structure can be obtained by fixedly installing discrete components, or can be prepared as an integral part.

[0056] Optionally, the top adapter 6 is in the form of a U-shaped groove, and the U-shaped opening faces the top of the swing head 5. The top adapter 6 in the form of a U-shaped groove is fixedly connected to the top end face of the swing head 5 by screws. The top adapter 6 is designed to adapt to different basic drive structures and adjust to the required installation height.

[0057] Overall, the moving and static contact device of the switch machine includes the static contact group of the switch machine and the aforementioned moving contact group of the switch machine; the static contact group of the switch machine includes a static contact unit and a static contact seat. Among them, the static contact unit is fixed in the corresponding installation groove of the static contact seat. The static contact seat 3 includes an insulating bracket 301 and a housing 302. The insulating bracket 301 is fixedly installed on the basic bracket through the housing 302. The middle part of the insulating bracket 301 extends downward to form a connecting part with the chevron swing member (i.e., the lower part of the aforementioned static contact seat), which can be specifically used to install the first rotating shaft (corresponding to the rotation axis 703 of the chevron swing member) and the third connecting shaft 8.

[0058] In one embodiment, as Figure 5 、 Figure 6 shown, in order to play an arc extinguishing role, corresponding to each pair of static contact units, the insulating bracket is correspondingly provided with blind hole grooves, and a magnet 4 is fixedly arranged in the blind hole grooves. The static contact 201 close to the static contact unit is insulated from the static contact 201 and the moving contact 101. Compared with the conventional arc extinguishing cover scheme in the form of multiple grooves, this embodiment uses electromagnetic physics to simply and reliably achieve the arc extinguishing effect.

[0059] The swing head 5 and the top adapter 6 support the installation of multiple sets of transmission mechanisms, and then synchronously drive multiple sets of moving contact units 1 to move between corresponding multiple pairs of static contact units 2, as Figure 7 、 Figure 8 shown. Similarly, this embodiment can also be extended and applied to more sets of moving and static contact groups, as Figure 9 shown.

[0060] From Figure 6 and Figure 8It can also be seen that in a pair of static contact units, the conductive sheets corresponding to the rear of the two static contacts of each static contact unit have a staggered bending structure, which is beneficial to insulation installation; the terminal posts corresponding to the rear of the two static contacts of each static contact unit are also arranged staggeredly and separated by a partition plate. In this way, when the moving contact unit is not in contact with the static contact unit, it can be ensured that the two static contacts of each static contact unit do not form a loop.

[0061] The technical features of the above embodiments can be combined arbitrarily (as long as there is no contradiction in the combination of these technical features). For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written out should also be considered to be within the scope described in this specification.

Claims

1. A switch motorized contact group, comprising a moving contact unit and a driving mechanism thereof, wherein the moving contact unit is arranged between a pair of static contact units, two static contacts of each static contact unit and two moving contacts of the moving contact unit are arranged up and down, and the static contact unit and the static contact seat are fixedly mounted on a base bracket; the driving mechanism comprises a swing head and a transmission mechanism, wherein the swing head can swing leftward / rightward in the lower area between the pair of static contact units, and then drive the moving contact unit to move between the pair of static contact units through the transmission mechanism; characterized in that: The transmission mechanism includes a top adapter and a herringbone swinging member; The herringbone swing member adopts a symmetrical frame structure, including a pair of parallel and relatively fixed herringbone plates; the herringbone plate is divided into a vertical section, a transition area, a left fork section and a right fork section from top to bottom. In the frame structure, the end of the vertical section of the herringbone swing member is hinged to the moving contact unit through a first connecting shaft; the center of the transition area is used as the rotation axis of the herringbone swing member, and the corresponding first rotating shaft is positioned and installed at the lower part of the static contact seat; The rotation axis of the swing head and the rotation axis of the herringbone swing part are located on the symmetry plane of the pair of static contact units; the top adapter is fixedly installed on the top of the swing head, and in the zero position state, the top adapter is symmetrically located in the opening area formed by the left fork segment and the right fork segment, but there is a gap with the left fork segment and the right fork segment, so that the top adapter can push the herringbone swing part to swing in the opposite direction during the process of the swing head swinging to the left / right, thereby driving the moving contact unit to contact the static contact unit on the right / left side.

2. The switch motorized contact assembly according to claim 1, characterized in that: A second connecting shaft is fixedly arranged between a pair of the herringbone plate members of the herringbone swinging member, and the second connecting shaft is located between the first connecting shaft and the rotation axis of the herringbone swinging member; a third connecting shaft is fixedly arranged at the lower part of the static contact seat, and the third connecting shaft is also located on the symmetry plane of the pair of static contact units with the rotation axis of the herringbone swinging member; the installation position of the third connecting shaft is not higher than the lower end of the transition area; a tension spring is also arranged between the pair of the herringbone plate members of the herringbone swinging member, and one end of the tension spring is connected to the second connecting shaft and the other end is connected to the third connecting shaft.

3. The switch motorized contact assembly according to claim 2, characterized in that: The first rotating shaft is divided into two sections, which are respectively connected to the corresponding inner wall of the lower part of the static contact seat from the front and rear sides of the frame of the herringbone swinging member, but do not pass through the frame of the herringbone swinging member.

4. The switch motorized contact assembly according to claim 2, characterized in that: The static contact seat includes an insulating bracket and a shell. The insulating bracket is fixedly installed on the base bracket through the shell. The middle part of the insulating bracket extends downward to form a connecting part with the herringbone swinging member, which is specifically used to install the first rotating shaft and the third connecting shaft.

5. The switch motorized contact assembly according to claim 1, characterized in that: A pair of the herringbone plate members of the herringbone swinging member are respectively fastened and connected via a fourth connecting shaft and a fifth connecting shaft corresponding to the left fork section and the right fork section.

6. The switch motorized contact assembly according to claim 1, characterized in that: The top adapter is in the form of a U-shaped groove, with the U-mouth facing the top of the swing head.

7. The switch motorized contact assembly according to claim 1 or 6, characterized in that: The swing head and the top adapter support the installation of multiple sets of transmission mechanisms, thereby synchronously driving multiple sets of moving contact units to move between corresponding pairs of static contact units.

8. The switch motorized contact assembly according to claim 1, characterized in that: The inner sides of the left fork section and the right fork section are straight lines.

9. A switch motor static contact device, characterized in that: It includes a static contact group of a switch machine and the mobile contact group of a switch machine as described in claim 1; the static contact group of the switch machine includes a static contact unit and a static contact seat, wherein the static contact unit is fixed to the corresponding mounting groove of the static contact seat, the static contact seat includes an insulating bracket and a shell, the insulating bracket is fixedly mounted on the base bracket through the shell, and the middle part of the insulating bracket extends downward to form a connection part with the herringbone swinging member.

10. The switch motor static contact device according to claim 9, characterized in that: Corresponding to each pair of static contact units, the insulating bracket is correspondingly provided with a blind hole groove, in which a magnetic steel is fixedly arranged. The magnetic steel is close to the static contact of the static contact unit and is insulated from the static contact and the moving contact, and is used to extinguish the arc using electromagnetic physics.

Images