A contact seat for electric switch machine

Abstract

The present invention provides a contact seat for an electric switch, comprising a contact seat base, a fixing plate for assembling a static contact group, and a bracket for assembling a moving contact group; the bracket comprises a left bracket and a right bracket, which are respectively symmetrically connected to the contact seat base through a moving contact axis; and a tension spring is arranged between the left bracket and the right bracket; the two sides of the left bracket are respectively provided with fixing plates corresponding to the position thereof; the two sides of the right bracket are also respectively provided with fixing plates corresponding to the position thereof; one end of the moving contact shaft is provided with an adjustment plate rotatable relative to the contact seat base; and a tension spring is arranged between the right adjustment plate and the left adjustment plate. In the contact seat for an electric switch described in the present invention, the tension spring between the left and right adjustment plates and the tension spring between the left and right brackets form a double tension spring system, which improves the switching power of the moving contact group and improves the stability of the switching of the moving contact group.

Description

Technical Field

[0001] The invention belongs to the technical field of railway turnout switching equipment, and in particular relates to a contact seat for an electric switch machine. Background Art

[0002] The function of the electric switch is to switch and lock the point rail / heart rail, change the opening direction of the turnout, and reflect the position status of the point rail / heart rail through the contact. As an important component in the switch, the contact seat realizes the switching function of the action and indication circuit, and feeds the signal back to the interlocking system. However, due to the long-term friction between its own moving contact group and static contact group, there will be a situation where the switching resistance is too large, resulting in the moving contact group being blocked and unable to normally switch and connect the indication circuit after the turnout is switched into place, delaying normal driving. Summary of the invention

[0003] In view of this, the present invention aims to propose a contact seat for an electric switch machine to reduce the switching resistance of the moving contact group of the contact seat, and improve the switching power of the moving contact group, ensure the stability of the switching of the moving contact group, and eliminate the hidden danger of jamming.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A contact seat for an electric switch machine comprises a contact seat base, a fixing plate for assembling a static contact group, and a bracket for assembling a dynamic contact group;

[0006] The bracket includes a left bracket and a right bracket, which are respectively connected to the contact seat base through a movable contact axis symmetrically; and a tension spring is arranged between the left bracket and the right bracket;

[0007] The two sides of the left bracket are respectively provided with fixing plates corresponding to the positions thereof; the two sides of the right bracket are also respectively provided with fixing plates corresponding to the positions thereof;

[0008] An adjustment plate which can rotate relative to the contact seat base is arranged at one end of the movable contact shaft; and a tension spring is arranged between the right adjustment plate and the left adjustment plate.

[0009] The rotation of the driving starter plate can drive the moving contact shaft and the left and right adjustment plates to rotate, and the rotation of the adjustment plate will drive the left and right brackets to rotate, thereby realizing the position movement of the moving contact group on the bracket, realizing the connection and disconnection of the moving contact ring on the moving contact group and the static contact plate on the static contact group, and realizing the switching of the action and indication circuit. The driving method provided in the present invention is to drive the starting plate by external force, and the moving contact shaft and the adjustment plate can also be driven to rotate by other methods.

[0010] The left and right adjustment plates are provided with tension spring connection holes. After the tension springs are installed, a double tension spring system is formed with the tension springs between the brackets, thereby ensuring stable and reliable conversion between the moving contact groups installed on the left and right brackets and the static contact groups.

[0011] Furthermore, a flanged bushing is installed in the base hole of the contact seat base for assembling the movable contact shaft, and a cushion sleeve is provided between the flanged bushing and the movable contact shaft. The flanged bushing is a graphite bushing. The flanged bushing realizes the coaxiality of the movable contact shaft and lubrication of the cushion sleeve.

[0012] Further, the flanged bushing includes a long flanged bushing and a short flanged bushing, a long flanged bushing is arranged in the base hole at the middle position of the movable contact shaft, and a long cushion sleeve is arranged in the long flanged bushing; and a long flanged bushing is arranged in the base hole for assembling the adjustment plate and the movable contact shaft at the same time, and the long flanged bushing is not arranged in the long cushion sleeve;

[0013] One end of the moving contact shaft without the adjustment plate is connected to the contact seat base through the base hole, and a short flange bushing is arranged in the base hole, and a short cushion sleeve is arranged between the short flange bushing and the moving contact shaft.

[0014] Furthermore, the right adjustment plate and the left adjustment plate are fixed to the tension spring by a pin shaft respectively; the left bracket and the right bracket are also fixed to the tension spring by a pin shaft respectively. The tension spring and the left and right adjustment plates, as well as the tension spring and the left and right brackets can also be connected by other means. The connection with the pin shaft is convenient and detachable, but it should be noted that the connection with other means does not affect the implementation of the present application.

[0015] Furthermore, the right adjustment plate is connected to the right starting plate through an adjusting screw, a roller is riveted on the right starting plate through a pin shaft, and a spline hole is provided on the right starting plate, corresponding to the spline shaft part of the moving contact shaft; the left adjustment plate is connected to the left starting plate through an adjusting screw, a roller is riveted on the left starting plate through a pin shaft, and a spline hole is provided on the left starting plate, corresponding to the spline shaft part of the moving contact shaft.

[0016] The left and right starting plates have spline holes, which are inserted into the moving contact shaft which is also a spline shaft, and are relatively stationary with the moving contact shaft; the mounting hole (through hole) of the adjustment plate and the spline hole of the starting plate are coaxial with the moving contact shaft, and the relative angle relationship between the two is adjusted by the adjustment screw of the adjustment plate.

[0017] The adjusting screw is provided with a spring washer and a nut, and the position relationship between the adjusting plate and the starting piece is adjusted by adjusting the position of the nut. It should be noted that the adjusting screw can also be connected to the adjusting plate and the starting piece through a thread, and in order to ensure the stability of the structure after adjustment, the position of the adjusting screw can also be relatively fixed by other existing methods.

[0018] Furthermore, the mounting holes for the left bracket, the right bracket and the moving contact shaft are through holes; and a groove is provided on the side corresponding to the left bracket and the left adjustment plate, and the groove cooperates with the boss on the left adjustment plate; a groove is provided on the side corresponding to the right bracket and the right adjustment plate, and the groove cooperates with the boss on the right adjustment plate.

[0019] The moving contact axis passes through the through holes on the left and right brackets, and is coaxial with the moving contact axis; the left and right brackets are coaxial with the through holes of the left and right adjustment plates, and cooperate with the bosses of the adjustment plates through the bracket grooves, and remain relatively stationary. When the left and right starting pieces rotate, the left and right starting pieces drive the rotation of the left and right adjustment plates through the adjustment screws of the left and right adjustment plates, and then drive the left and right brackets to rotate, thereby realizing the connection or disconnection of the contacts.

[0020] Furthermore, a uniformly distributed dot-shaped graphite lubricating layer is embedded on the moving contact ring of the moving contact group, which ensures the current conductivity after being driven into the static contact group and plays a lubricating role, thereby reducing the friction between the two.

[0021] Furthermore, the head of the static contact piece of the static contact group is in an arc shape, which can achieve reliable contact with the moving contact ring and improve the occurrence of arcing.

[0022] The present invention also provides an electric switch machine, comprising the contact seat for the electric switch machine as described above.

[0023] Compared with the prior art, the contact seat for the electric switch machine of the present invention has the following advantages:

[0024] (1) The contact seat for the electric switch machine described in the present invention, when the left and right starting plates rotate, the left and right starting plates drive the rotation of the left and right adjustment plates through the adjustment screws of the left and right adjustment plates, and then drive the left and right brackets to rotate, thereby realizing the position movement of the moving contact group on the bracket, realizing the connection and disconnection of the moving contact ring on the moving contact group and the static contact piece on the static contact group, realizing the switching of the action and indication circuits, and convenient switching. It is used to switch by rotating the moving contact shaft, which ensures the smoothness of the conversion and prevents the obstacle of normal conversion caused by blocking.

[0025] (2) The contact seat for the electric switch machine described in the present invention, the tension spring between the left and right adjustment plates and the tension spring between the left and right brackets form a double tension spring system, which improves the switching power of the moving contact group and improves the switching stability of the moving contact group.

[0026] (3) The contact seat for the electric switch machine described in the present invention has long and short flanged bushings installed between the outer sides of the long and short gaskets and the contact seat base, which have a graphite lubricating layer, thereby reducing the friction between the long and short gaskets and the contact seat base. At the same time, the flanges of the long and short flanged bushings can play an axial positioning role in the contact seat base to prevent it from falling out. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 It is a front view of a contact seat for an electric switch machine according to an embodiment of the present invention;

[0029] Figure 2 A top view of a contact seat for an electric switch machine according to an embodiment of the present invention;

[0030] Figure 3 for Figure 2 A partial view of the

[0031] Figure 4 It is a side view of the moving contact group (graphite) described in the embodiment of the present invention;

[0032] Figure 5 is a top view of the static contact group (arc) described in the embodiment of the present invention;

[0033] Figure 6 is a cross-sectional view of a long flange bushing described in an embodiment of the present invention;

[0034] Figure 7 A cross-sectional view of a short flange bushing according to an embodiment of the present invention

[0035] Figure 8 It is a front view of the left adjustment plate described in the embodiment of the present invention;

[0036] Fig. 9 is a top view of the left adjustment plate described in an embodiment of the present invention;

[0037] Fig.10 is a side view of the left adjustment plate described in an embodiment of the present invention;

[0038] Fig.11 It is a schematic diagram of the matching relationship of the interface parts on the movable contact shaft described in the embodiment of the present invention;

[0039] Fig.12 It is a front view of the contact seat base described in the embodiment of the present invention;

[0040] Fig.13 for Fig.12 Schematic diagram of the cross section of AA;

[0041] Fig.14 It is a side view of the bracket described in the embodiment of the present invention.

[0042] Description of reference numerals:

[0043] 1. Static contact group; 2. Moving contact group; 3. Long washer; 4. Left starter; 5. Moving contact shaft; 6. Long flanged bushing; 7. Contact seat base; 8. Right adjustment plate; 9. Adjustment screw; 10. Short washer; 11. Short flanged bushing; 12 Right bracket; 13. Pin shaft; 14. Fixed plate; 15. Tension spring; 16. Right starter; 17. Left bracket; 18. Left adjustment plate; 19. Roller; 20. Base hole. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0047] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0048] like Figure 1 to Figure 14 As shown, a contact seat for an electric switch machine includes a contact seat base 7, a fixing plate 14 for assembling a static contact group 1, and a bracket for assembling a dynamic contact group 2;

[0049] The bracket includes a left bracket 17 and a right bracket 12, which are symmetrically connected to the contact seat base 7 through a movable contact axis 5 respectively; and a tension spring 15 is provided between the left bracket 17 and the right bracket 12;

[0050] The left bracket 17 has two sides with fixing plates 14 corresponding to its position. The right bracket 12 also has two sides with fixing plates 14 corresponding to its position.

[0051] An adjustment plate rotatable relative to the contact seat base 7 is provided at one end of the movable contact shaft 5 that is not connected to the contact seat base 7 ; and a tension spring 15 is provided between the right adjustment plate 8 and the left adjustment plate 18 .

[0052] A flanged bushing is installed in the base hole 20 on the contact seat base 7 for assembling the movable contact shaft 5, and a cushion sleeve is provided between the flanged bushing and the movable contact shaft 5; the flanged bushing is a graphite bushing.

[0053] The flanged bushing includes a long flanged bushing 6 and a short flanged bushing 11. The long flanged bushing 6 is provided in the base hole 20 at the middle position of the movable contact shaft 5, and the long cushion sleeve 3 is provided in the long flanged bushing 6; and the long flanged bushing 6 is provided in the base hole 20 for assembling the adjustment plate and the movable contact shaft 5 at the same time, and the long flanged bushing 6 is not provided with the long cushion sleeve 3;

[0054] The end of the moving contact shaft 5 without the adjustment plate is connected to the contact seat base 7 through the base hole 20 , and a short flanged bushing 11 is provided in the base hole 20 , and a short washer 10 is provided between the short flanged bushing 11 and the moving contact shaft 5 .

[0055] The right adjustment plate 8 and the left adjustment plate 18 are fixed via a pin shaft 13 and a tension spring 15 , respectively; the left bracket 17 and the right bracket 12 are also fixed via a pin shaft 13 and a tension spring 15 , respectively.

[0056] The right adjustment plate 8 is connected to the right starting plate 16 through the adjustment screw 9, and the right starting plate 16 is riveted with a roller 19 through a pin shaft, and the right starting plate 16 is provided with a spline hole, which corresponds to the spline shaft part of the moving contact shaft 5; the left adjustment plate 18 is connected to the left starting plate 4 through the adjustment screw 9, and the left starting plate 4 is riveted with a roller 19 through a pin shaft, and the left starting plate 4 is provided with a spline hole, which corresponds to the spline shaft part of the moving contact shaft 5.

[0057] The adjusting screw 9 is provided with a spring washer and a nut, and the distance between the adjusting plate and the starting piece is adjusted by adjusting the position of the nut, so as to realize the fixed connection between the adjusting plate and the starting piece.

[0058] The mounting holes for the left bracket 17 and the right bracket 12 to cooperate with the moving contact shaft 5 are through holes; and a groove is provided on the side corresponding to the left bracket 17 and the left adjustment plate 18, and the groove cooperates with the boss on the left adjustment plate 18; a groove is provided on the side corresponding to the right bracket 12 and the right adjustment plate 8, and the groove cooperates with the boss on the right adjustment plate 8.

[0059] The moving contact ring of the moving contact group 2 is embedded with a uniformly distributed dot-shaped graphite lubricating layer.

[0060] The head shape of the static contact piece of the static contact group 1 is an arc shape.

[0061] Working process: The roller of one of the starting pieces "climbs" on the action plate to make the starting piece rotate. The starting piece drives the adjustment plate on the same side to rotate through the adjusting screw. The rotation of the adjustment plate drives the bracket on the same side to rotate. At this time, the action circuit is connected, and the contacts are connected in rows 1 and 4. When the roller of the starting piece on the other side falls from the action plate, the adjustment plate and the bracket will pull the adjustment plate and the bracket on the other side to rotate through the tension spring installed thereon. At this time, the representation circuit is connected, and the contacts are connected in rows 1 and 3 or rows 2 and 4 (arranged in sequence from one direction to another).

[0062] The setting of the adjustment plate is used to adjust the driving depth of the moving contact group. The left and right adjustment plates are provided with tension spring connection holes. After the tension spring is installed, a double tension spring system is formed with the tension spring between the brackets to ensure the stable and reliable conversion of the moving contact group installed on the left and right brackets between the static contact groups.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A contact seat for an electric switch machine, characterized in that: It comprises a contact seat base (7), a fixing plate (14) for assembling a static contact group (1), and a bracket for assembling a dynamic contact group (2); The bracket comprises a left bracket (17) and a right bracket (12), which are symmetrically connected to the contact seat base (7) through a movable contact axis (5) respectively; and a tension spring (15) is provided between the left bracket (17) and the right bracket (12); The left bracket (17) is provided with fixing plates (14) corresponding to its position on both sides; the right bracket (12) is also provided with fixing plates (14) corresponding to its position on both sides; An adjustment plate rotatable relative to the contact seat base (7) is provided at one end of the movable contact shaft (5); and a tension spring (15) is provided between the right adjustment plate (8) and the left adjustment plate (18); A flanged bushing is installed in a base hole (20) on a contact seat base (7) for assembling a movable contact shaft (5), and a cushion sleeve is provided between the flanged bushing and the movable contact shaft (5); the flanged bushing is a graphite bushing; The flanged bushing comprises a long flanged bushing (6) and a short flanged bushing (11); a long flanged bushing (6) is arranged in a base hole (20) at a middle position of a movable contact shaft (5) for assembling the long flanged bushing (6), and a long cushion sleeve (3) is arranged in the long flanged bushing (6); and a long flanged bushing (6) is arranged in a base hole (20) for assembling the adjustment plate and the movable contact shaft (5) at the same time, and the long flanged bushing (6) is not arranged in the long cushion sleeve (3); One end of the movable contact shaft (5) not provided with an adjustment plate is connected to the contact seat base (7) through a base hole (20), a short flanged bushing (11) is provided in the base hole (20), and a short cushion sleeve (10) is provided between the short flanged bushing (11) and the movable contact shaft (5); The right adjustment plate (8) and the left adjustment plate (18) are fixed via a pin shaft (13) and a tension spring (15) respectively; the left bracket (17) and the right bracket (12) are also fixed via a pin shaft (13) and a tension spring (15) respectively.

2. The contact seat for an electric switch machine according to claim 1, characterized in that: The right adjustment plate (8) is connected to the right starting plate (16) through an adjustment screw (9), a roller (19) is riveted to the right starting plate (16) through a pin shaft, and a spline hole is provided on the right starting plate (16), corresponding to the spline shaft portion of the moving contact shaft (5); the left adjustment plate (18) is connected to the left starting plate (4) through an adjustment screw (9), a roller (19) is riveted to the left starting plate (4) through a pin shaft, and a spline hole is provided on the left starting plate (4), corresponding to the spline shaft portion of the moving contact shaft (5).

3. The contact seat for an electric switch machine according to claim 1, characterized in that: The mounting holes for the left bracket (17) and the right bracket (12) to cooperate with the movable contact shaft (5) are through holes; and a groove is provided on the side corresponding to the left bracket (17) and the left adjustment plate (18), and the groove cooperates with the boss on the left adjustment plate (18); and a groove is provided on the side corresponding to the right bracket (12) and the right adjustment plate (8), and the groove cooperates with the boss on the right adjustment plate (8).

4. The contact seat for an electric switch machine according to claim 1, characterized in that: A uniformly distributed dot-shaped graphite lubricating layer is embedded on the moving contact ring of the moving contact group (2).

5. The contact seat for an electric switch machine according to claim 1, characterized in that: The head shape of the static contact piece of the static contact group (1) is an arc shape.

6. An electric switch machine, characterized in that: It comprises a contact seat for an electric switch machine as described in any one of claims 1 to 5.

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