Railway safety signal relay

Abstract

The embodiment of the invention relates to a relay, in particular to a railway safety signal relay, which comprises a plurality of contact groups, each contact group comprises a movable contact assembly and two static contact assemblies, each movable contact assembly comprises a movable contact connecting piece and a movable contact, and each static contact assembly comprises a static contact connecting piece and a static contact; the transmission assembly is arranged to be capable of moving under the action of external force so as to drive the movable contact connecting piece to move towards a first preset direction, so that the movable contact is in contact with one static contact; when the external force is cancelled, the transmission assembly can be reset under the action of gravity, so that the movable contact connecting piece is driven to move in the direction opposite to the first preset direction, and the movable contact is in contact with the other static contact; the transmission assembly can be movably mounted on the mounting part relative to the mounting part; and the reset limiting piece is arranged on the transmission assembly, and when the transmission assembly resets under the action of gravity, the reset limiting piece abuts against the mounting piece and is used for limiting the falling distance of the transmission assembly when the transmission assembly resets under the action of gravity.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of relays, and in particular to a railway safety signal relay. Background Art

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] Railway safety signal relay is one of the key electronic devices in railway signal control system, which is used to control the status of signal lights on railway.

[0004] Railway safety signal relays usually include multiple contact groups and transmission components. Each moving contact component and two static contact components are respectively arranged on both sides of the moving contact component. The moving contact component includes a moving contact connector and a moving contact arranged on the moving contact connector, and the static contact component includes a static contact connector and a static contact arranged on the static contact connector. The transmission component is used to drive the moving contact connector to move when subjected to an external force, so that the moving contact contacts a static contact to form a first electrical signal; when the external force is removed, the transmission component can be reset under the action of gravity, thereby driving the moving contact connector to move in the opposite direction, so that the moving contact contacts another static contact to form a second electrical signal; the state of the railway signal light is controlled by forming the first electrical signal and the second electrical signal. Summary of the invention

[0005] A brief overview of the present application is provided below in order to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify the key or important parts of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0006] The embodiment of the present application provides a railway safety signal relay, which includes a plurality of contact groups, a transmission assembly, a mounting member, and a reset limiter. Each contact group includes: a moving contact assembly and two static contact assemblies respectively arranged on both sides of the moving contact assembly, the moving contact assembly includes a moving contact connector and a moving contact arranged on the moving contact connector, and the static contact assembly includes a static contact connector and a static contact arranged on the static contact connector; the transmission assembly is configured to be able to move when subjected to an external force, thereby driving the moving contact connector to move in a first preset direction, so that the moving contact contacts a static contact to form a first electrical signal; when the external force is cancelled, the transmission assembly can be reset under the action of gravity, thereby driving the moving contact connector to move in a direction opposite to the first preset direction, so that the moving contact contacts another static contact to form a second electrical signal; the transmission assembly is mounted on the mounting member and can move relative to the mounting member; the reset limiter is arranged on the transmission assembly, and when the transmission assembly is reset under the action of gravity, the reset limiter contacts the mounting member to limit the falling distance of the transmission assembly.

[0007] The railway safety signal relay provided in the embodiment of the present application sets a reset limit member on the transmission assembly. When it abuts against the mounting member, the gravity of the transmission assembly is directly transmitted to the end of the reset limit member through the part where the reset limit member is connected to the transmission assembly, and the reset limit member is supported by the end rather than the middle part, so that the reset limit member is not easily deformed during the resetting process of the transmission assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Other objects and advantages of the present application will become apparent from the following description of the embodiments of the present application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the present application.

[0009] Figure 1 It is a schematic diagram of the structure of a railway safety signal relay provided in an embodiment of the present application.

[0010] Figure 2 yes Figure 1 A side view of a railway safety signal relay is shown, wherein the moving contact is in contact with the stationary contact located above it.

[0011] Figure 3 yes Figure 1 A side view of a railway safety signal relay is shown, wherein the moving contact is in contact with the stationary contact located below it.

[0012] Figure 4 yes Figure 1 The diagram shows the structure of the railway safety signal relay after the second transmission member, the counterweight member, the stop member and the reset limit member are combined.

[0013] Figure 5 yes Figure 4 Schematic diagram of the structure of the reset limiter shown in FIG.

[0014] Figure 6 yes Figure 1 The schematic diagram shows the assembled transmission components, stopper, reset limiter, connecting parts and mounting parts of the railway safety signal relay.

[0015] Figure 7 yes Figure 6 A cross-sectional view of the structure shown in FIG.

[0016] Figure 8 yes Figure 1 A schematic structural diagram of the first transmission member is shown.

[0017] Fig. 9 yes Figure 3 The structure diagram of the railway safety signal relay shown is a schematic diagram after the connecting parts, the stopper, the base and some contact groups are omitted.

[0018] Description of reference numerals:

[0019] 100. Railway safety signal relay;

[0020] 10. Contact group; 11. Moving contact assembly; 111. Moving contact connector; 112. Moving contact; 12. Static contact assembly; 121. Static contact connector; 122. Static contact;

[0021] 20. Transmission assembly; 21. First transmission member; 211. First transmission body; 2111. Pin hole; 212. Limiting group; 2121. Limiting member; 21211. Contact position; 22. Second transmission member; 221. First part; 2211. Pin hole; 2212. Fulcrum; 222. Second part; 23. Counterweight member; 231. Counterweight block; 232. Clearance hole;

[0022] 30. Mounting member; 31. Horizontal extension portion; 311. Coordinating mounting portion; 32. Vertical extension portion;

[0023] 40. Reset limiter; 41. First plane extension section; 42. Second plane extension section; 43. Inclined extension section; 44. Displacement slot; 45. Rivet hole;

[0024] 50, stopper; 51, stopper element; 52, stopper connecting member; 521, stopper mounting portion; 522, protrusion;

[0025] 60. Base;

[0026] 70. Insulation seat;

[0027] 80. Connecting piece; 81. Transmission piece limiting hole; 82. Stopper piece limiting hole;

[0028] 101. Rivets.

[0029] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0030] Exemplary embodiments of the present application will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this application.

[0031] It is also necessary to explain here that, in order to avoid obscuring the present application due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present application are shown in the accompanying drawings, while other details that are not very relevant to the present application are omitted.

[0032] When the transmission assembly is reset under the action of gravity, a reset limiter needs to be set to limit the falling distance of the transmission assembly. The reset limiter is usually set on other structures of the railway safety signal relay except the transmission assembly (such as an insulating seat for fixing the moving contact connector and the static contact connector). When the transmission assembly falls, the transmission assembly contacts the middle part of the reset limiter and is supported by the middle part of the reset limiter. The inventors of the present application found that the reset limiter set in this way is prone to deformation during the falling process of the transmission assembly, resulting in a deviation between the actual falling distance of the transmission assembly and the theoretical distance.

[0033] In view of the above problems, the embodiment of the present application provides a railway safety signal relay, see Figure 1 , Figure 2 and Figure 3, which includes a plurality of contact groups 10, a transmission assembly 20, a mounting member 30 and a reset limiter 40. Each contact group 10 includes: a moving contact assembly 11 and two static contact assemblies 12 respectively arranged on both sides of the moving contact assembly 11, the moving contact assembly 11 includes a moving contact connector 111 and a moving contact 112 arranged on the moving contact connector 111, and the static contact assembly 12 includes a static contact connector 121 and a static contact 122 arranged on the static contact connector 121; the transmission assembly 20 is configured to be able to move when subjected to an external force, thereby driving the moving contact connector 111 to move in a first preset direction, so that the moving contact 112 is in contact with a static contact 122. When the external force is cancelled, the transmission component 20 can be reset under the action of gravity, thereby driving the moving contact connector 111 to move in a direction opposite to the first preset direction, so that the moving contact 112 contacts another static contact 122 to form a second electrical signal; the transmission component 20 is installed on the mounting member 30 and can move relative to the mounting member 30; the reset limit member 40 is arranged on the transmission component 20, and when the transmission component 20 is reset under the action of gravity, the reset limit member 40 abuts against the mounting member 30 to limit the falling distance of the transmission component 20.

[0034] The railway safety signal relay 100 provided in the embodiment of the present application sets the reset limit member 40 on the transmission assembly 20. When abutting against the mounting member 30, the gravity of the transmission assembly 20 is directly transmitted to the end of the reset limit member 40 through the part where the reset limit member 40 is connected to the transmission assembly 20, and is supported by the end instead of the middle, so that the reset limit member 40 is not easily deformed during the resetting process of the transmission assembly 20, which is beneficial to ensure that the actual falling distance of the transmission assembly is not easy to change over a long period of time.

[0035] See also Figure 1 In some embodiments, the railway safety signal relay 100 may further include an insulating seat 70, and the moving contact connector 111 and the static contact connector 121 are respectively connected to the insulating seat 70 to achieve mutual insulation between the moving contact connector 111 and the static contact connector 121, thereby ensuring that an electrical signal is generated only when the moving contact 112 and the static contact 122 are in contact.

[0036] See also Figure 1 , Figure 2 and Figure 3In some embodiments, the transmission assembly 20 may include a first transmission member 21, a second transmission member 22, and a counterweight member 23. The first transmission member 21 is connected to the moving contact connection member 111; the second transmission member 22 is connected to the first transmission member 21, and the second transmission member 22 is configured to be movable when subjected to an external force, thereby driving the first transmission member 21 to move in a first preset direction, so that the moving contact 112 contacts a static contact 122; when the external force is removed, the second transmission member 22 can be reset under the action of gravity, thereby driving the first transmission member 21 to move in a direction opposite to the first preset direction, so that the moving contact 112 contacts another static contact 122; the counterweight member 23 is disposed on the second transmission member 22, and is used to adjust the weight of the transmission assembly 20 as a whole; wherein the reset limiter 40 is disposed on the counterweight member 23. In such an embodiment, the reset limiter 40 is disposed on the counterweight member 23, which is conducive to reducing the length of the reset limiter 40 in the direction of gravity falling, so that it is less likely to deform during the reset process of the transmission assembly 20.

[0037] In some embodiments, the first preset direction and the second preset direction may be an extension direction of the first transmission member 21. In some embodiments, the extension direction of the first transmission member 21 may extend vertically, for example.

[0038] In some embodiments, the railway safety signal relay 100 may further include a drive assembly for driving the second transmission member 22 to move, thereby driving the first transmission member 21 to move in a first preset direction. In some embodiments, the drive assembly may include a coil, which generates a magnetic field when energized, and can drive the second transmission member 22 to move, thereby driving the first transmission member 21 to move in the first preset direction. In some embodiments, as the coil is used for a longer time, the coil will age, causing the magnetic field generated by the coil to weaken, thereby causing the distance that the first transmission member 21 moves in the first preset direction to become smaller. In this case, the distance that the transmission assembly 20 falls can be reduced by adjusting the height of the reset limit member 40 along the first preset direction and / or reducing the weight of the counterweight 23.

[0039] See also Figure 1 , Figure 2 and Figure 3 In some embodiments, the railway safety signal relay 100 may further include a base 60, and the driving assembly is disposed in the base 60. The mounting member 30 may be fixedly mounted on the base 60.

[0040] In some embodiments, the reset limiter 40 may be formed by bending a metal sheet. In such an embodiment, when the height of the reset limiter 40 along the first preset direction needs to be adjusted, the height of the reset limiter 40 along the first preset direction can be changed by lengthening the bent metal sheet, thereby facilitating the adjustment of the falling distance of the transmission assembly 20.

[0041] In some embodiments, one end of the reset limiter 40 is connected to the second transmission member 22 and the counterweight member 23 , and the other end is suspended.

[0042] It is easy to understand that the distance that the moving contact connecting member 111 moves in the first preset direction is the same as the falling distance of the transmission assembly 20 .

[0043] See also Figure 1 , Figure 2 and Figure 3 In some embodiments, the counterweight 23 may include a plurality of counterweight blocks 231, each of which has the same weight. The counterweight blocks 231 may be stacked on the second transmission member 22. In some embodiments, the weight of the counterweight 23 may be adjusted by adjusting the number of the counterweight blocks 231 or adjusting the weight of each counterweight block 231.

[0044] In some embodiments, the second transmission member 22 may include a first portion 221 and a second portion 222, wherein an angle is formed between the first portion 221 and the second portion 222, and a plurality of counterweights 231 are disposed on the first portion 221. The second portion 222 can move when subjected to an external force, thereby driving the first portion 221 to move; the first portion 221 can be reset under the action of gravity, thereby driving the second portion 222 to move. In some embodiments, the second transmission member 22 may be an armature. In some embodiments, the first portion 221 is disposed above the base 60, and the second portion 222 extends toward a side end surface of the base 60 to face the end surface.

[0045] In some embodiments, see Figure 1 , Figure 2 and Figure 3 In some embodiments, the mounting member 30 may include a horizontal extension portion 31 and a vertical extension portion 32 connected to the horizontal extension portion 31, and the portion where the first portion 221 and the second portion 222 of the second transmission member 22 are connected may be rotatably disposed at the end of the vertical extension portion 32 away from the horizontal extension portion 31. In some embodiments, when the transmission assembly 20 is reset under the action of gravity, the reset stopper 40 abuts against the horizontal extension portion 31. In some embodiments, the mounting member 30 may be a yoke.

[0046] See also Figure 4 and Figure 5In some embodiments, the reset limiter 40 may include a first planar extension section 41, a second planar extension section 42, and an inclined extension section 43. The second planar extension section 42 is arranged in parallel with the first planar extension section 41; the inclined extension section 43 is used to connect the first planar extension section 41 and the second planar extension section 42; wherein the first planar extension section 41 is connected to the counterweight 23, and the second planar extension section 42 is used to abut against the mounting member 30 when the transmission assembly 20 is reset under the action of gravity. In such an embodiment, by providing the inclined extension section 43 and the second planar extension section 42, it is convenient to limit the falling distance of the transmission assembly 20.

[0047] In some embodiments, the falling distance of the transmission assembly 20 can be adjusted by changing the inclination of the inclined extension section 43. In some embodiments, when the transmission assembly 20 is reset under the action of gravity, the second planar extension section 42 abuts against the horizontal extension portion 31.

[0048] In some embodiments, the second planar extension section 42 corresponds to the center of gravity of the second transmission member 22 , which is beneficial for preventing the reset limit member 40 from being deformed when the transmission assembly 20 is reset.

[0049] In some embodiments, the first planar extension section 41 is connected to a side of the counterweight 23 facing the second portion 222 , and the second planar extension section extends in a direction away from the second portion 222 .

[0050] In some embodiments, the reset limiter 40 may be trapezoidal, and the size of the first plane extension section 41 is larger than the size of the second plane extension section 42. In such an embodiment, the reset limiter 40 is not easily deformed when the transmission assembly 20 is reset, and when the falling distance of the transmission assembly 20 needs to be adjusted, it is convenient to reduce the force that causes the reset limiter 40 to deform, thereby facilitating the adjustment of the height of the reset limiter 40 along the first preset direction.

[0051] In some embodiments, the plurality of contact groups 10 are symmetrically distributed in two rows. Figure 1 and Figure 4In some embodiments, the railway safety signal relay 100 may further include a stopper 50, which is disposed on the mounting member 30. The stopper 50 includes a plurality of stopper elements 51 and a stopper connector 52 for connecting the plurality of stopper elements 51. The plurality of stopper elements 51 are symmetrically formed on both sides of the stopper connector 52. A stopper element 51 is provided between the moving contact connector 111 and the static contact connector 121, which is used to prevent the static contact connector 121 where the other static contact 122 is located from moving toward the moving contact connector 111 when the moving contact 112 contacts one static contact 122. In such an embodiment, by providing a stopper element 51 between the moving contact connector 111 and the static contact connector 121, when the moving contact 112 contacts one static contact 122, the static contact connector 121 where the other static contact 122 is located is prevented from moving toward the moving contact connector 111, thereby preventing the moving contact 112 from contacting two static contacts 122 at the same time.

[0052] In the embodiment of the present application, compared with setting the stop member 50 on the insulating seat 70, the stop member 50 is set on the mounting member 30 so that the stop member 50 can be closer to the first transmission member 21, thereby eliminating the need to set the stop element 51 too long to easily cause deformation, so that when the moving contact 112 contacts a static contact 122, it is difficult to effectively prevent the static contact connector 121 where the other static contact 122 is located from moving toward the moving contact connector 111.

[0053] In some embodiments, the stopper 50 may be made of an insulating material.

[0054] See also Figure 6 and Figure 7 In some embodiments, the stopper 50 is an integrally formed part, and the stopper 50 is formed with a stopper mounting portion 521. In some embodiments, the mounting member 30 is formed with a matching mounting portion 311, and the stopper 50 is mounted on the mounting member 30 through the matching between the stopper mounting portion 521 and the matching mounting portion 311. In such an embodiment, compared with the stopper 50 being assembled by two stoppers, the integrally formed stopper 50 is directly installed through the matching between the stopper mounting portion 521 and the matching mounting portion 311, which is more conducive to ensuring that the heights of the stopper elements 51 formed symmetrically on both sides are the same, thereby ensuring that the contact alignment is smaller.

[0055] In some embodiments, the stopper 50 can be integrally formed by injection molding. Figure 6 and Figure 7 In some embodiments, the stop mounting portion 521 may be formed on the stop connector 52 , and the matching mounting portion 311 may be formed on the horizontal extension portion 31 .

[0056] In some embodiments, the stopper mounting portion 521 may be a plurality of protrusions formed at one end of the stopper connector 52, and the matching mounting portion 311 may be a plurality of slots formed on the surface of the horizontal extension portion 31 facing the stopper connector 52. The protrusions and the slots may be interference fit, and the stopper 50 connects the two by inserting the protrusions into the slots of the mounting member 30.

[0057] See also Figure 4 In some embodiments, each counterweight block 231 is formed with a clearance hole 232, the clearance hole 232 of each counterweight block 231 has the same size, and all the clearance holes 232 are aligned in the vertical direction to allow the stop connection member 52 to pass through, and when the transmission assembly 20 moves, the stop connection member 52 does not interfere with the transmission assembly 20.

[0058] In some embodiments, the reset limiter 40 is symmetrically disposed on the counterweight 23 , so that when the transmission assembly 20 is reset under the action of gravity, it is helpful to more stably limit the falling distance of the transmission assembly 20 .

[0059] See also Figure 4 In some embodiments, the position of the reset limiter 40 corresponding to the stopper 50 may form a clearance groove 44 for the stopper 50 to pass through. In such an embodiment, by configuring the reset limiter 40 to form the clearance groove 44, when the height of the reset limiter 40 along the first preset direction needs to be adjusted, it is helpful to reduce the force that causes the reset limiter 40 to deform when adjusting the height.

[0060] In some embodiments, the first planar extension section 41 can form a clearance groove 44, and the clearance groove 44 can extend to three quarters of the inclined extension section 43 to reduce the force that causes the reset limit member 40 to deform when adjusting the height. At the same time, the reset limit member 40 is not easily deformed when the transmission assembly 20 is reset.

[0061] The first transmission member 21 may be made of insulating material.

[0062] See also Figure 1 and Figure 8 In some embodiments, the first transmission member 21 may include a first transmission body 211 and a plurality of limit groups 212 formed on the first transmission body 211, wherein the plurality of limit groups 212 are symmetrically formed on both sides of the first transmission body 211; each limit group 212 includes two limit members 2121 arranged opposite to each other, and the moving contact connecting member 111 is clamped by the two limit members 2121. The two limit members 2121 may be arranged along a first preset direction. In such an embodiment, by arranging two limit members 2121 to clamp the moving contact connecting member 111, it is beneficial for the first transmission member 21 to drive the moving contact connecting member 111 to move in the first preset direction or in the opposite direction.

[0063] In some embodiments, the surfaces of the stopper 2121 and the moving contact connector 111 are in line contact, and the two stoppers 2121 are in close contact with the moving contact connector 111 to prevent changes in the position of the line contact between the stopper 2121 and the moving contact connector 111. By providing two stoppers 2121 to support the moving contact connector 111, deformation of the moving contact connector 111 can be prevented.

[0064] In some embodiments, the surface of the stopper 2121 facing the moving contact connector 111 can be set as an arc surface, so that the stopper 2121 and the surface of the moving contact connector 111 are in line contact, which can prevent the moving contact connector 111 from deforming.

[0065] See also Figure 1 and Figure 7 In some embodiments, the first transmission member 21 is an integrally formed member, and the first transmission body 211 is connected to the second transmission member 22 of the transmission assembly 20 through a pin. In such an embodiment, the integrally formed first transmission member 21 has the characteristics of high precision, which can ensure the symmetry of the two sides of the first transmission member 21, thereby ensuring that the moving contact connection member 111 clamped by the limit groups 212 arranged on both sides of the first transmission body 211 can be better synchronized to improve the reliability of the formed electrical signal; at the same time, the pin connection has better safety and is not easy to fall off. In some embodiments, the first transmission member 21 can be integrally formed by plastic injection molding.

[0066] In some embodiments, the first transmission body 211 is connected to the first part 221 of the second transmission member 22 through a pin. In some embodiments, a pin hole 2111 is formed at one end of the first transmission body 211, and correspondingly, a pin hole 2211 is also formed in the first part 221, and the first transmission body 211 and the first part 221 are connected by a pin passing through the pin hole 2111 and the pin hole 2211.

[0067] See also Figure 4 In some embodiments, the reset limit member 40, the counterweight member 23 and the second transmission member 22 are connected by rivets 101. In the related art, the transmission assembly 20 and the counterweight member are connected by bolts, and the reset limit member is formed by a spring sleeved on the bolt. The inventor of the present application found that in such related art, since the bolts will loosen after being used for a period of time, the actual length of the bolts will change, thereby changing the falling distance of the transmission assembly, and once the bolts fall off, the entire relay will fail. The embodiment of the present application connects the reset limit member 40, the counterweight member 23 and the second transmission member 22 by rivets 101, which has better safety and will not fall off during vibration, and is also easy to maintain.

[0068] In some embodiments, the first planar extension section 41 is formed with a rivet hole 45 for the rivet 101 to pass through.

[0069] In some embodiments, the connection position between the first transmission member 21 and the second transmission member 22 can be determined by the distance between the contact position 21211 between the stopper 2121 of the first transmission member 21 and the moving contact connector 111 and the insulating seat 70. The contact position 21211 can be determined according to the weight of the counterweight 23, the number of contact groups 10, and the distance from the moving contact 112 of each contact group 10 to the insulating seat 70.

[0070] In some embodiments, the contact position 21211 can be determined according to the weight of the counterweight 23, the distance between the center of gravity of the counterweight 23 and the fulcrum 2212, the number of contact groups 10, the elastic force of the deformation of the movable contact connector 111 of each contact group 10, the distance between the movable contact 112 of each contact group 10 and the insulating seat 70, the gravity moment of the second transmission member 22, the gravity moment of the reset limiter 40, and the gravity moment of the rivet 101. The fulcrum 2212 can be the contact point between the second transmission member 22 and the mounting member 30 when the second transmission member 22 rotates around the mounting member 30.

[0071] See also Fig. 9 In some embodiments, the distance between the contact position 21211 and the insulating seat 70 can be determined based on the weight of the counterweight 23, the distance between the center of gravity of the counterweight 23 and the fulcrum 2212, the number of contact groups 10, the elastic force of the deformation of the moving contact connector 111 of each contact group 10, the distance between the moving contact 112 of each contact group 10 and the insulating seat 70, the distance between the fulcrum 2212 and the insulating seat 70, and the gravity torque of the second transmission member 22, the gravity torque of the reset limit member 40, and the gravity torque of the rivet 101; wherein, the weight of the counterweight 23 can be obtained by multiplying the weight of a single counterweight block 231 by the number of counterweight blocks 231.

[0072] Specifically, according to the bending theory of elastic beams and Newton's law, it can be deduced that the distance between the contact position 21211 and the insulating seat 70, the weight of the counterweight 23, the distance between the center of gravity of the counterweight 23 and the fulcrum 2212, the number of contact groups 10, the elastic force of the movable contact connector 111 of each contact group 10 to generate deformation, the distance between the movable contact 112 of each contact group 10 and the insulating seat 70, and the gravity torque of the second transmission member 22 can satisfy the following relationship:

[0073] N pz ×G pz ×L pz +M XQ +N tp ×F tp ×L tp ÷Llt ×L lg =0,

[0074] N in the formula pz is the number of counterweights 231, G pz is the weight of a single counterweight 231, L pz M is the distance between the center of gravity of the counterweight 23 and the fulcrum 2212, XQ is the sum of the gravity moment of the second transmission member 22, the gravity moment of the reset limiter 40 and the gravity moment of the rivet 101, N tp is the number of contact groups 10, F tp The elastic force for generating deformation of the movable contact connecting member 111 of each contact group 10; L tp is the distance between the movable contact 112 of each contact group 10 and the insulating seat 70, L lt is the distance between the contact position 21211 and the insulating seat 70, L lg is the distance between the contact position 21211 and the fulcrum 2212, L lg =L zd -L lt , where L zd is the distance between the supporting point 2212 and the insulating seat 70.

[0075] The distance between the fulcrum 2212 and the insulating seat 70 is limited by the overall size of the railway safety signal relay 100 and is a fixed value; the number N of the contact group 10 tp Also to determine the value, the elastic force F generated by the deformation of the movable contact connecting member 111 of each contact group 10 tp The contact pressure can be determined according to the standard requirements; the distance L between the movable contact 112 of each contact group 10 and the insulating seat 70 tp Due to the design size limitation, a certain value can generally be selected within a limited range; the number N of the counterweight blocks 231 pz , the weight of a single counterweight block 231 G pz , and the distance L from the center of gravity of the counterweight 23 to the fulcrum 2212 pz The gravity moment of the second transmission member 22, the gravity moment of the reset limit member 40 and the gravity moment of the rivet 101 M XQ When the above values ​​are determined, the distance L between the contact position 21211 and the insulating seat 70 can be determined according to the relationship: lt , that is, the connection position of the first transmission member 21 and the second transmission member 22 is determined.

[0076] Further, after determining the connection position of the first transmission member 21 and the second transmission member 22, when only the number of contact groups 10 of the railway safety signal relay 100 changes, the number of counterweight blocks 231 corresponding to the number of contact groups 10 can be quickly determined through the above relationship.

[0077] See also Figure 1 , Figure 4 and Figure 7 In some embodiments, the railway safety signal relay 100 may further include a connector 80 for connecting the first transmission member 21, the stopper 50 and the insulating seat 70 to increase the stability of the first transmission member 21 and the stopper 50. In some embodiments, the connector 80 is provided with a limiter, and the first transmission member 21 and the stopper 50 are respectively provided with a limiter matching member to limit the movement of the first transmission member 21 and the stopper 50 in the horizontal direction.

[0078] See also Figure 1 , Figure 4 and Figure 7 In some embodiments, the limiting member of the connecting member 80 includes a transmission member limiting hole 81 , and the end of the first transmission body 211 away from the mounting member 30 enters the transmission member limiting hole 81 .

[0079] See also Figure 1 , Figure 4 and Figure 7 In some embodiments, the limiting member of the connecting member 80 also includes a stop member limiting hole 82. Accordingly, a protrusion 522 is formed at one end of the stop connecting member 52. The protrusion 522 is interference fit with the stop member limiting hole 82. The connection between the stop member 50 and the connecting member 80 is achieved through the cooperation between the protrusion 522 and the stop member limiting hole 82.

[0080] In some embodiments, the railway safety signal relay 100 may further include an electrical interface for outputting a corresponding electrical signal to the outside when each moving contact 112 contacts a static contact 122. The electrical interface may be disposed on a side of the insulating seat 70 away from the contact group 10.

[0081] The working process of the railway safety signal relay 100 provided in the embodiment of the present application is as follows: when the control coil is energized, the second part 222 of the second transmission member 22 moves toward the coil direction until it abuts against the base 60. In this process, the first transmission member 21 drives the moving contact connector 111 to move upward, so that the moving contact 112 contacts the static contact 122 above it, forming a first electrical signal, which is output to the railway signal light through the electrical interface, so that the railway signal light is green; when the control coil is de-energized, the first part 221 of the second transmission member 22 falls under the action of gravity, driving the first transmission member 21 to fall, and then driving the moving contact connector 111 to move downward until the reset limit member 40 abuts against the mounting member 30, at which time the moving contact 112 contacts the static contact 122 below it, forming a second electrical signal, which is output to the railway signal light through the electrical interface, so that the railway signal light is red.

[0082] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0083] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A railway safety signal relay, characterized in that: include: A plurality of contact groups, each of the contact groups comprises: a moving contact assembly and two static contact assemblies respectively arranged on both sides of the moving contact assembly, the moving contact assembly comprises a moving contact connector and a moving contact arranged on the moving contact connector, and the static contact assembly comprises a static contact connector and a static contact arranged on the static contact connector; The transmission assembly is configured to move when subjected to an external force, thereby driving the moving contact connector to move in a first preset direction, so that the moving contact contacts one of the static contacts to form a first electrical signal; when the external force is removed, the transmission assembly can be reset under the action of gravity, thereby driving the moving contact connector to move in a direction opposite to the first preset direction, so that the moving contact contacts another of the static contacts to form a second electrical signal; A mounting member, wherein the transmission assembly is mounted on the mounting member and is capable of moving relative to the mounting member; A reset limiter is arranged on the transmission assembly. When the transmission assembly is reset under the action of gravity, the reset limiter abuts against the mounting member to limit the falling distance of the transmission assembly.

2. The railway safety signal relay according to claim 1, characterized in that: The transmission assembly comprises: A first transmission member connected to the moving contact connecting member; a second transmission member, the second transmission member is connected to the first transmission member, and the second transmission member is configured to be movable when subjected to an external force, thereby driving the first transmission member to move in a first preset direction, so that the movable contact contacts one of the static contacts; when the external force is removed, the second transmission member can be reset under the action of gravity, thereby driving the first transmission member to move in a direction opposite to the first preset direction, so that the movable contact contacts the other static contact; A counterweight, disposed on the second transmission member, for adjusting the weight of the transmission assembly as a whole; Wherein, the reset limiter is arranged on the counterweight.

3. The railway safety signal relay according to claim 2, characterized in that: The reset limiter is formed by bending a metal sheet.

4. The railway safety signal relay according to claim 3, characterized in that: The reset limiter comprises: a first planar extension; A second plane extension section is arranged parallel to the first plane extension section; An inclined extension section, used to connect the first planar extension section and the second planar extension section; Wherein, the first planar extension section is connected to the counterweight member, and the second planar extension section is used to abut against the mounting member when the transmission assembly is reset under the action of gravity.

5. The railway safety signal relay according to claim 1, characterized in that: The plurality of contact groups are symmetrically distributed in two columns; the railway safety signal relay further comprises: A stopper, arranged on the mounting member, comprising a plurality of stop elements and a stopper connecting member for connecting the plurality of stop elements, wherein the plurality of stop elements are symmetrically formed on both sides of the stopper connecting member; A stop element is provided between the moving contact connector and the static contact connector, and is used to prevent the static contact connector where another static contact is located from moving toward the moving contact connector when the moving contact contacts one of the static contacts.

6. The railway safety signal relay according to claim 5, characterized in that: The stopper is an integrally formed part, and the stopper is formed with a stopper mounting portion; The mounting member is formed with a matching mounting portion, and the stop member is mounted on the mounting member through the matching between the stop mounting portion and the matching mounting portion.

7. The railway safety signal relay according to claim 6, characterized in that: The reset limiter forms a clearance slot corresponding to the position of the stopper to allow the stopper to pass through.

8. The railway safety signal relay according to claim 2, characterized in that: The first transmission member comprises: a first transmission body and a plurality of limit groups formed on the first transmission body, wherein the plurality of limit groups are symmetrically formed on both sides of the first transmission body; Each of the limit groups includes two limit members arranged opposite to each other. The movable contact connecting member is clamped by the two limiting members.

9. The railway safety signal relay according to claim 8, characterized in that: The first transmission member is an integrally formed member, and the first transmission body is connected to the second transmission member of the transmission assembly through a pin.

10. The railway safety signal relay according to claim 2, characterized in that: The reset limiter, the counterweight and the second transmission member are connected by rivets.

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