Vertical maintenance-free oil immersion contact group

Abstract

The utility model discloses a vertical maintenance-free oil immersion contact group. The sealing shell is provided with an oil cavity, the main shaft body is provided with a vertical rotating shaft and is integrally formed in an injection molding mode, the main shaft body is packaged in the oil cavity through the top cover, a static contact set surrounding the periphery of the oil cavity is arranged in the sealing shell, a plurality of horizontally-arranged mounting holes are formed in the side wall of the main shaft body, and movable contact assemblies are arranged in the mounting holes. Through rotation of the main shaft body, the static contact group and the movable contact assembly which correspond to each other are contacted or separated. The utility model has the advantages that the problems of oxidation, corrosion and the like caused by external complex working environments such as dust, rain and dew are avoided, so that the contact reliability of the contact group is ensured, and the contact group can be applied to vertical installation occasions and is ingenious in design, compact in structure and small in size. The outer contact block and the inner contact block are mutually independent and are respectively installed through the inner elastic piece and the outer elastic piece, so that a mutual compensation effect can be achieved, and the contact reliability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a contact group structure of track switch machine, concretely relates to a vertical maintenance -free oil -immersed contact group. BACKGROUND

[0002] For track switch machine, commonly all work in the comparatively harsh environment, therefore, the conventional track switch machine often because of the existence of the harsh environment easy oxidation and corrosion and so on various problems, these problems have greatly influenced the contact reliability of contact group structure, therefore, in practical application, often need to consume a lot of manpower and material resources to maintain the contact group, it is time -consuming, there is great maintenance cost, in order to solve the above technical problem, later published a patent no. CN220155386U, the utility model patent with the name of close inspection oil -immersed maintenance -free contact group, the patent is a contact group of horizontal structure, can realize maintenance -free purpose, but in some practical application occasions, the shaft of this horizontal contact group is horizontal, therefore can only be applied in the occasion of horizontal installation, often difficult to adapt to the occasion of vertical installation, therefore, how to provide a kind of contact group that can adapt to vertical installation demand becomes the technical problem to be solved urgently. SUMMARY

[0003] The utility model wants to solve the technical problem and provide a vertical maintenance -free oil -immersed contact group with compact structure design, good insulation, good use stability, high contact reliability and maintenance -free.

[0004] In order to solve the above technical problem, the vertical maintenance -free oil -immersed contact group of the utility model, including the sealed shell with oil cavity, the main shaft body of integral injection molding with vertical rotating shaft and the top cover that encapsulates the main shaft body in the oil cavity, the static contact group that is arranged around the periphery of oil cavity is provided in the sealed shell, the side wall of main shaft body has a plurality of horizontally arranged mounting holes, a plurality of groups of dynamic contact point assemblies for cooperating with different static contact groups are arranged in mounting holes, the static contact group and dynamic contact point assembly corresponding to each other are contacted or separated by the rotation of main shaft body.

[0005] The dynamic contact point assembly includes an adjusting nut screwed in the mounting hole, an outer contact block capable of reciprocating relative to the adjusting nut, an inner contact block nested in the outer contact block, an inner elastic member pressed between the adjusting nut and the inner contact block, and an outer elastic member pressed between the adjusting nut and the outer contact block.

[0006] Each group of dynamic contact point assemblies is arranged in the up-down direction of the main shaft body.

[0007] The bottom of the vertical rotating shaft is provided with a bevel gear for cooperating with the linkage mechanism.

[0008] The vertical rotating shaft is provided with an upper bearing matched with the top cover, an upper frame oil seal on the upper side of the upper bearing, and a lower bearing for matched installation with the sealing shell and a lower frame oil seal on the lower side of the lower bearing.

[0009] The top cover is provided with a ventilation valve.

[0010] The top cover is provided with an indication position for indicating the on-off angle range, and the vertical rotating shaft is provided with a pointer matched with the indication position.

[0011] The mounting hole is embedded with a copper sleeve matched with the outer contact block.

[0012] The outer circumferential surface of the adjusting nut is provided with a one-way tooth, and the mounting hole is provided with a section of tooth groove for matched installation with the one-way tooth.

[0013] The middle part of the adjusting nut is provided with a hexagonal inner hole, and the middle part of the inner contact block is provided with a through hole.

[0014] The utility model discloses the advantages are:

[0015] (1) on the one hand, the oil-immersed structure design effectively avoids the oxidation, corrosion and other problems caused by dust, rain and other external complex working environment, thereby guaranteeing the contact reliability of the contact group, and more importantly, the vertical structure of the main shaft body is designed and directly arranged in the sealing shell and surrounds the static contact group on the periphery of the oil cavity, so that it can be applied to the vertical installation occasion and is designed ingeniously, so that the structure is compact and the volume is small.

[0016] (2) by designing the moving contact assembly as the matched structure of the adjusting nut, the outer contact block, the inner contact block and the inner elastic member and the outer elastic member, so that the outer contact block and the inner contact block are independent of each other and are installed through the inner elastic member and the outer elastic member respectively, so that the mutual compensation effect can be achieved, and the contact reliability is improved.

[0017] (3) by setting the one-way tooth on the outer circumferential surface of the adjusting nut and setting a section of tooth groove in the mounting hole for matched installation with the one-way tooth, on the one hand, the good anti-backup effect can be realized, and the contact pressure can be effectively prevented from being affected by the rotation displacement of the adjusting nut in the vibration environment, and on the other hand, the purpose of adjusting the contact pressure can be realized.

[0018] (4) the body shell of the vertical maintenance-free contact group adopts the sealed oil-immersed structure, and the main shaft can play the arc extinguishing and flow disturbance self-cleaning roles when moving left and right. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1The use state structural schematic view of the vertical maintenance-free oil-immersed contact group of the utility model is shown in the figure.

[0020] Figure 2 The three-dimensional structural schematic view of the vertical maintenance-free oil-immersed contact group of the utility model is shown in the figure.

[0021] Figure 3 The installation structural schematic view of the movable contact assembly (part of material of the main shaft body is removed) in the utility model is shown in the figure.

[0022] Figure 4 The three-dimensional structural schematic view of the cooperation state of the main shaft body and the stationary contact group in the utility model is shown in the figure.

[0023] Figure 5 The front view structural schematic view of the cooperation state of the main shaft body and the stationary contact group in the utility model is shown in the figure.

[0024] Figure 6 The exploded (remove the elastic member) structural schematic view of the movable contact assembly in the utility model is shown in the figure. DETAILED DESCRIPTION

[0025] The vertical maintenance-free oil-immersed contact group of the utility model is further explained in detail in combination with the drawings and the specific embodiments.

[0026] As shown in the figure, the vertical maintenance-free oil-immersed contact group of the utility model, comprising the sealed shell 1 with oil cavity, the main shaft body 3 of the integral injection molding with vertical rotating shaft 2 and the top cover 4 of encapsulating the main shaft body in the oil cavity, the top cover 4 is provided with the breather valve 17, wherein, the vertical rotating shaft 2 is installed with the upper bearing 15 matched with the top cover, the upper skeleton oil seal 26 located in the upper side of the upper bearing 15 and the lower bearing 16 used for matched installation with the sealed shell and the lower skeleton oil seal 27 located in the lower side of the lower bearing 16, and the dynamic sealing is realized through the upper skeleton oil seal 26 and the lower skeleton oil seal 27;The vertical rotating shaft 2 is still clamped with the elastic clamping piece 28 located in the lower side of the upper bearing 15, and the elastic clamping piece 28 is corrugated spring or disc spring, which is mainly used for eliminating axial clearance;The static contact group 5 is arranged in the sealed shell 1 and surrounds the periphery of the oil cavity, and the static contact group 5 is provided with the wiring screw rod 23, wherein, the static contact group 5 is formed in the sealed shell 1 and makes the wiring screw rod 23 extend out of the sealed shell 1 for wiring, the side wall of the main shaft body 3 is provided with a plurality of horizontally arranged mounting holes 6, a plurality of groups of dynamic contact assembly 7 used for cooperating with different static contact groups are arranged in the mounting hole 6, wherein, the dynamic contact assembly 7 comprises the adjusting nut 8 screwed in the mounting hole, the external contact block 9 capable of reciprocating relative to the adjusting nut, the internal contact block 10 nested in the external contact block, the internal elastic member 11 pressed between the adjusting nut 8 and the internal contact block 10 and the external elastic member 12 pressed between the adjusting nut 8 and the external contact block 9, and the internal elastic member and the external elastic member can be spring, and the internal contact block 10 can move relative to the external contact block 9 under the action of the internal elastic member to realize compensation, that is, through the design of two independent contact blocks, the double-spring structure is used to provide contact pressure, and the two are independent of each other, so that the adjacent two groups of static contact blocks are connected with double insurance, thereby the rotation of the main shaft body 3 makes each group of corresponding static contact group and dynamic contact assembly reliably contact or separate.

[0027] Further, the bottom of the vertical rotating shaft 2 is provided with the bevel gear 14 used for cooperating with the linkage mechanism 13, and the linkage mechanism can drive the bevel gear to rotate and further make the main shaft body rotate.

[0028] Further, the copper sleeve 20 matched with the external contact block 9 is embedded in the mounting hole 6, thereby improving the motion reliability.

[0029] Further, the top cover 4 is provided with the indication position 18 used for indicating the on-off angle range, and the vertical rotating shaft 2 is provided with the pointer 19 matched with the indication of the indication position 18, Figure 2It is shown that the indicating bit 18 has three indicating grooves, one indicating groove on the left is used for indicating the left on angle range, one indicating groove in the middle is used for indicating the both off angle range, one indicating groove on the right is used for indicating the right on angle range, and the dynamic contact point assembly 7 is arranged staggeredly in the up and down direction of the main shaft body 3, namely, the dynamic and static contact points are arranged in steps, so that the structure is compact and the contact point group occupies less space.

[0030] Note:

[0031] Further, the outer circumferential surface of the adjusting nut 8 is provided with a one-way tooth 22, a tooth groove for cooperating with the one-way tooth is arranged in the mounting hole 6, the middle part of the adjusting nut 8 is provided with a hexagonal inner hole 24, and the middle part of the inner contact point block 10 is provided with a through hole 25, so that the hexagonal wrench can adjust the contact pressure of the adjusting nut through the through hole of the dynamic contact point block.

[0032] Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples, and the changes, modifications, additions or replacements made by the skilled in the art within the essential scope of the present application should also belong to the protection scope of the present application.

Claims

1. A vertical maintenance-free oil-immersed contact set, characterized by: The application relates to a sealed shell (1) with an oil cavity, a main shaft body (3) integrally injection molded with a vertical rotating shaft (2), and a top cover (4) for packaging the main shaft body in the oil cavity, wherein a static contact point group (5) is arranged around the periphery of the oil cavity in the sealed shell (1), a plurality of horizontally arranged mounting holes (6) are arranged on the side wall of the main shaft body (3), a plurality of dynamic contact point assemblies (7) for cooperating with different static contact point groups are arranged in the mounting holes (6), and the corresponding static contact point groups and dynamic contact point assemblies are contacted or separated by rotating the main shaft body (3).

2. The vertical maintenance-free oil-immersed contact set according to claim 1, characterized in that: The dynamic contact point assembly (7) comprises an adjusting nut (8) screwed in the mounting hole, an outer contact point block (9) capable of reciprocating relative to the adjusting nut, an inner contact point block (10) nested in the outer contact point block, an inner elastic element (11) pressed between the adjusting nut (8) and the inner contact point block (10), and an outer elastic element (12) pressed between the adjusting nut (8) and the outer contact point block (9).

3. Vertical maintenance-free oil-immersed contact group according to claim 1 or 2, characterized in that: The dynamic contact point assemblies (7) are arranged in a staggered mode in the up-down direction of the main shaft body (3).

4. A vertical maintenance-free oil-immersed contact set according to claim 3, characterized in that: A bevel gear (14) for cooperating with a linkage mechanism (13) is arranged at the bottom of the vertical rotating shaft (2).

5. A vertical maintenance-free oil-immersed contact set according to claim 1, 2 or 4, characterized in that: An upper bearing (15) cooperating with the top cover, an upper skeleton oil seal (26) located on the upper side of the upper bearing (15), a lower bearing (16) for cooperating with the sealed shell and a lower skeleton oil seal (27) located on the lower side of the lower bearing (16) are arranged on the vertical rotating shaft (2); and an elastic clamping element (28) located on the lower side of the upper bearing (15) is clamped on the vertical rotating shaft (2).

6. A vertical maintenance-free oil-immersed contact set according to claim 5, characterized in that: An air breather (17) is arranged on the top cover (4).

7. A vertical maintenance-free oil-immersed contact set according to claim 1, 2, 4 or 6, characterized in that: An indicating position (18) for indicating the on-off angle range is arranged on the top cover (4), and a pointer (19) cooperating with the indicating position (18) is arranged on the vertical rotating shaft (2).

8. The vertical maintenance-free oil-immersed contact set according to claim 2, characterized in that: A copper sleeve (21) cooperating with the outer contact point block (9) is embedded in the mounting hole (6).

9. A vertical maintenance-free oil-immersed contact set according to claim 2 or 8, characterized in that: A one-way tooth (22) is arranged on the outer circumferential surface of the adjusting nut (8), and a tooth groove for cooperating with the one-way tooth is arranged in the mounting hole (6).

10. A vertical maintenance-free oil-immersed contact set according to claim 9, characterized in that: A hexagonal inner hole (24) is arranged in the middle of the adjusting nut (8), and a through hole (25) is arranged in the middle of the inner contact point block (10).

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