Anti-loosening redundant contact group for railway point switch

Abstract

The utility model discloses an anti-loose redundant type railway point switch contact group, which comprises a dust cover, two wiring fixing pieces, a plastic shell and a switch piece, the two wiring fixing pieces are respectively arranged on two sides of the plastic shell, the switch piece comprises a shifting fork, two connecting reeds and eight moving contacts, and the shifting fork is arranged on the plastic shell. The two connecting reeds are horizontally arranged and rotationally connected to the interior of the upper end of the shifting fork, the eight moving contacts are averagely located in the two connecting reeds, four static connecting strips are arranged in the wiring fixing piece, one ends of the four static connecting strips are inserted into the plastic shell respectively, and the other ends of the four static connecting strips are inserted into the plastic shell respectively. One end of the static connecting strip can be in contact with the two moving contacts on the same side of the same ends of the two connecting reeds, and a wiring screw rod is vertically and upwards arranged at one end, far away from the connecting reeds, of the static connecting strip. The method and the device have the effects of improving the conduction performance of the contact and reducing the faults of on-site meter breakage or meter loss of the railway.

Description

Technical Field

[0001] The present application relates to the technical field of switch machines, and in particular to a contact group for a railway switch machine with redundant anti-loosening belts. Background Art

[0002] With the construction of high-speed railways and the continuous increase in train speeds, the types and quantities of large-size turnouts suitable for high-speed railway construction are increasing. The corresponding turnout switch machines and close contact inspection device technologies are also constantly developing, and the types and quantities of equipment are also increasing. The railway's requirements for the safety of speed-up turnout conversion, as well as the detection requirements for the close contact and repulsion status of the turnout point rail and core rail are also becoming higher and higher.

[0003] Railway electric turnout switch is an important part of railway operation. With the need to increase railway speed and the frequent increase of high-speed trains, the supporting signal equipment of various switch machines and contact systems in my country must also be continuously improved and upgraded. Utility Model Content

[0004] The utility model aims to provide a redundant anti-loosening-belt type contact group for railway switch machines in view of the defects and shortcomings of the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] It includes a dust cover, two wiring fixtures, a plastic shell and a switch component, the two wiring fixtures are respectively located on both sides of the plastic shell, the dust cover covers the two wiring fixtures and the top of the plastic shell, the switch component is located in the plastic shell, the switch component includes a pull fork, two connecting springs and eight moving contacts, the two connecting springs are horizontally arranged and rotatably connected to the inside of the upper end of the pull fork, the eight moving contacts are evenly located in the two connecting springs, the four moving contacts are respectively arranged on the corresponding sides of both ends of the connecting springs, four static connection bars are arranged in the wiring fixture, one end of the four static connection bars is respectively inserted into the plastic shell, one end of the static connection bar can contact with the two moving contacts on the same side of the same end of the two connecting springs, and the static connection bar is vertically provided with a wiring screw at the end away from the connecting spring.

[0007] Preferably, the wiring fixture, the static connection strip and the wiring screw are integrally formed by injection molding.

[0008] Preferably, the plastic shell is composed of two mounting half shells, and corresponding side walls of the mounting half shells are provided with mounting grooves for mounting and fixing the static joint strips.

[0009] Preferably, a cross bolt is provided on the side wall of the mounting half shell, one end of the cross bolt passes through the mounting half shell and is threadedly fixed in the other mounting half shell.

[0010] Preferably, the static connection bar has an extension plate at one end close to the connecting spring sheet, and the length of the extension plate is greater than the distance between two horizontally adjacent moving contacts.

[0011] Preferably, a base is provided at the lower end of the plastic shell, wall panels are vertically provided on both sides of the upper end of the base, and fixing bolts are provided at both ends of the dust cover, which fix the dust cover to the upper end of the wall panel.

[0012] Preferably, a plug-in column is provided on the inner side of the installation half shell, and a plug-in hole for the plug-in column to be plugged and installed is opened on the inner side of the other installation half shell.

[0013] In summary, the present application includes at least one of the following beneficial technical effects:

[0014] 1. Two connecting springs are arranged horizontally on the upper end of the fork, and two static connecting bars are arranged in the wiring fixture to contact and connect with the same side of the two connecting springs, which not only improves the conductivity of the contact point, but also reduces the occurrence of faults such as broken or lost meters on the railway site. It is safe and reliable, and reduces the economic losses caused by parking and delays;

[0015] 2. The wiring fixtures, static connection strips and wiring screws are integrally injection molded, making them inspection-free and maintenance-free during operation;

[0016] 3. The plastic shell is composed of two mounting half shells, which are then fixed by cross bolts. At the same time, the plug-in column is inserted and fixed in the plug-in hole. When the two mounting half shells are assembled and installed, the two static joints are installed in the two mounting grooves, which improves the convenience of installing the plastic shell and the two static joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the contact group of the transfer and withdrawal machine of the utility model;

[0018] Figure 2 It is an exploded schematic diagram of the contact group of the transfer and withdrawal machine of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the plastic shell of the utility model;

[0020] Figure 4 It is an exploded schematic diagram of the plastic shell of the utility model;

[0021] Figure 5 It is an exploded schematic diagram of the plastic housing of the utility model from another perspective;

[0022] Figure 6 It is a structural schematic diagram of the switch element of the utility model.

[0023] In the figure: 1. Dust cover; 2. Wiring fixture; 3. Plastic shell; 4. Switch component; 5. Moving contact seat; 6. Pull fork; 7. Conversion tension spring; 8. Connecting spring; 9. Moving contact; 10. Copper sleeve; 11. Static connection strip; 12. Wiring screw; 13. Extension plate; 14. Mounting half shell; 15. Mounting groove; 16. Cross bolt; 17. Plug column; 18. Plug hole; 19. Base; 20. Wall panel; 21. Fixing bolt. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] The embodiment of the present application discloses a contact group for a railway switch machine with redundant anti-loosening belts.

[0026] Reference Figure 1 and Figure 2 , including a dust cover 1, two wiring fixtures 2, multiple plastic shells 3 and multiple switch components 4, the multiple plastic shells 3 are stacked horizontally, and the corresponding two sides of the plastic shells 3 are respectively provided with abutment plates, the two wiring fixtures 2 are respectively located on both sides of the multiple plastic shells 3 and placed above the multiple side-by-side abutment plates, the upper end surface of the wiring fixture 2 is flush with the upper end surface of the plastic shell 3, the dust cover 1 is placed above the two wiring fixtures 2 and the multiple plastic shells 3, and the switch component 4 is located in the plastic shell 3.

[0027] Reference Figure 6 The switch member 4 includes a moving contact seat 5, a fork 6, a conversion tension spring 7, two connecting spring leaves 8 and eight moving contacts 9. The fork 6 is in an "H" shape. One end of the fork 6 is rotatably connected to the upper end of the moving contact seat 5. The two connecting spring leaves 8 are horizontally arranged and rotatably connected to the upper end of the fork 6. A copper sleeve 10 is horizontally inserted and fixed in the moving contact seat 5. One end of the conversion tension spring 7 is hooked on the peripheral side of the copper sleeve 10, and the other end is hooked on the truss in the middle of the fork 6. The eight moving contacts 9 are evenly located on the two connecting spring leaves 8, and the four moving contacts 9 are respectively glued and fixed to the corresponding two sides of the two ends of the connecting spring leaves 8.

[0028] Reference Figure 3 , Figure 4 and Figure 5, multiple static connection groups are arranged in two wiring fixing parts 2. The multiple static connection groups correspond to multiple plastic housings 3. The static connection group is composed of four static connection strips 11. The four static connection strips 11 are evenly located in the two wiring fixing parts 2. Two of the static connection strips 11 are placed vertically. The inner ends of the four static connection strips 11 are inserted into the plastic housing 3. The end of the static connection strip 11 far from the moving contact seat 5 vertically penetrates upward through the placement of the wiring screw 12. Two connecting spring pieces 8 are horizontally arranged at the upper end of the fork 6. Two static connection strips 11 in contact connection with the same side of the two connecting spring pieces 8 are arranged in the wiring fixing part 2, which not only improves the conduction performance of the contacts but also reduces the occurrence of faults such as broken meters or lost meters at the railway site. The wiring fixing part 2, multiple static connection strips 11 and multiple wiring screws 12 are integrally injection-molded. The integral injection molding realizes no inspection and no maintenance during the working process.

[0029] An extension plate 13 is integrally arranged at one end of the static connection strip 11 close to the connecting spring piece 8. The width of the extension plate 13 is equal to the height of the static connection strip 11, and the length of the extension plate 13 is greater than the distance between the two moving contacts 9. Thus, the production cost of the static connection strip 11 is reduced.

[0030] The plastic housing 3 is composed of two mounting half-shells 14. Two mounting grooves 15 for inserting and mounting the static connection strips 11 are provided on the side walls of the mounting half-shells 14. The two mounting grooves 15 are placed vertically. Two cross bolts 16 are respectively inserted into the side walls of the mounting half-shells 14. One end of the cross bolt 16 sequentially passes through the half-shell and the other half-shell, and then is fixed by a nut. Two insertion posts 17 are integrally arranged on the side walls of the half-shell. The two insertion posts 17 are vertically symmetric. Two insertion holes 18 for inserting and fixing the insertion posts 17 are provided on the side wall of the other half-shell. When installing the plastic housing 3, the two mounting half-shells 14 are installed on the two static connection strips 11, which improves the convenience of installing the plastic housing 3.

[0031] Refer to Figure 2 , a base 19 is horizontally placed below the multiple plastic housings 3. Wall plates 20 are respectively fixed to both sides of the upper end of the base 19 by bolts. The vertical cross-section of the wall plate 20 is in a "U" shape. Installation sleeves are respectively welded and fixed to both ends of the dust-proof cover 1. Two fixing bolts 21 pass upward through the upper end of the wall plate 20. One end of the fixing bolt 21 sequentially passes through the upper end face of the wall plate 20 and the installation sleeve, and then a nut is threadedly rotated around the periphery of one end of the fixing bolt 21. Under the action of the fixing bolt 21, the dust-proof cover 1 is installed and fixed above the two wiring fixing parts 2 and the multiple plastic housings 3.

[0032] The above is only the preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A redundant anti-loosening type contact group for railway switch machine, characterized in that: The invention comprises a dust cover (1), two wiring fixtures (2), a plastic shell (3) and a switch component (4), wherein the two wiring fixtures (2) are respectively located on both sides of the plastic shell (3), the dust cover (1) covers the two wiring fixtures (2) and the upper part of the plastic shell (3), the switch component (4) is located in the plastic shell (3), and the switch component (4) comprises a fork (6), two connecting springs (8) and eight moving contacts (9), wherein the two connecting springs (8) are horizontally arranged and rotatably connected to the inner part of the upper end of the fork (6), and the eight moving contacts (9) are connected to the fork (6). The moving contact (9) is evenly located in the two connecting springs (8), and the four moving contacts (9) are respectively arranged on the corresponding two sides of the two ends of the connecting springs (8). Four static connection bars (11) are arranged in the wiring fixture (2), and one end of the four static connection bars (11) is respectively inserted into the plastic shell (3), and one end of the static connection bar (11) can contact the two moving contacts (9) on the same side of the same end of the two connecting springs (8). The static connection bar (11) is vertically upwardly provided with a wiring screw (12) at one end away from the connecting springs (8).

2. The anti-loosening belt redundant type railway switch contact assembly according to claim 1, characterized in that: The wiring fixture (2), the static connection strip (11) and the wiring screw rod (12) are integrally formed by injection molding.

3. The anti-loosening belt redundant type railway switch contact assembly according to claim 1, characterized in that: The plastic housing (3) is composed of two mounting half shells (14), and corresponding side walls of the mounting half shells (14) are provided with mounting grooves (15) for mounting and fixing the static joint strip (11).

4. The anti-loosening belt redundant type railway switch contact assembly according to claim 3, characterized in that: A cross bolt (16) is provided on the side wall of the mounting half shell (14), one end of the cross bolt (16) passes through the mounting half shell (14) and is threadedly fixed in the other mounting half shell (14).

5. The anti-loosening belt redundant type railway switch contact assembly according to claim 1, characterized in that: The static connection bar (11) has an extension plate (13) at one end close to the connection spring (8), and the length of the extension plate (13) is greater than the distance between two horizontally adjacent moving contacts (9).

6. The anti-loosening belt redundant type railway switch contact assembly according to claim 1, characterized in that: A base (19) is provided at the lower end of the plastic shell (3), wall panels (20) are vertically provided on both sides of the upper end of the base (19), and fixing bolts (21) are provided at both ends of the dust cover (1), and the fixing bolts (21) fix the dust cover (1) to the upper end of the wall panels (20).

7. The anti-loosening belt redundant railway switch contact assembly according to claim 3, characterized in that The inner side of the installation half shell (14) is provided with a plug-in column (17), and the inner side of the other installation half shell (14) is provided with a plug-in hole (18) for the plug-in column (17) to be plugged in and installed.

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