Knuckle bearing type flexible joint and CN turnout indication inspection rod

Abstract

The utility model discloses a knuckle bearing type flexible joint and a CN turnout indication inspection rod. A combined joint bearing and a cover nut are arranged in a bottom cavity of the adjustable joint, the combined joint bearing comprises a joint bearing outer ring, a joint bearing inner ring and an adjusting nut, the joint bearing inner ring comprises a spherical section and a shaft sleeve section, internal threads in threaded connection with the turnout indication rod are arranged in the shaft sleeve section, a stop table is arranged outside the shaft sleeve section, and a flat key is arranged on the periphery of the stop table. An inner ring of the adjusting nut is provided with a boss and a through long key groove, the outer end of the adjusting nut is further provided with a counter bore used for installing a spring check ring, and the combined knuckle bearing is plugged in a cavity in the bottom of the movable connector through the cover nut. And a baffle block is arranged on the inner ring surface of the baffle ring. Crawling and jumping capacities of the switch rail are greatly improved through the arrangement of the knuckle bearing, machining and dismounting simplicity and convenience are improved through the improvement of the combined knuckle bearing, and the switch rail creeping and jumping device adapts to creeping and jumping amplitudes of the switch rail. And the baffle ring can further ensure the stability and reliability of the close contact state expression of the switch rail.

Description

Technical Field

[0001] The utility model relates to the field of railway turnout conversion equipment, in particular to a joint bearing type flexible joint and a CN turnout indicating inspection rod. Background Art

[0002] The CN turnout inspection rod is used to express the state of the turnout point rail close to the base rail in the positioning or reverse position. Only when the gap between the point rail and the base rail meets the standard value will a signal be given that the locomotive can pass safely.

[0003] The existing CN turnout inspection rod structure is as shown in the attached figure. Figure 1 As shown, it includes a bushing 1, a self-insulating indicating rod 2, an M30 hexagonal nut 3, an elastic washer 4, a buckleless sleeve 5, an insulating bolt group 6, a buckled sleeve 7 and a flexible joint 8. Among them, the bushing 1 made of stainless steel is nested in the bolt pin hole at the left end of the indicating rod, with the purpose of increasing the wear resistance of the inner wall of the pin hole; the self-insulating indicating rod 2 is composed of two left and right indicating short rods and a rod sleeve connecting them, and there is no direct contact between the left and right indicating short rods and the rod sleeve, and the middle gap is filled with high-strength insulating material by an injection molding machine, which can achieve the insulation of the left and right short rods. One end of the self-insulating indicating rod 1 is connected to the switch machine action rod, and the other end is connected to the vertical hole at the bottom of the point rail. The combination of M30 hexagonal nut 3 and elastic washer 4 is used for axial anti-loosening of the buckleless sleeve 5 after it is adjusted into place; the buckleless sleeve 5 is used in conjunction with the buckled sleeve 7, the inner cavity of the buckleless sleeve 5 is a smooth surface, and the inner cavity of the buckled sleeve 7 is threaded, and the two are meshed together and respectively tightly adhere to the two sides of a pair of joint heads installed in the lower end hole of the flexible joint 8, and the axial position of the flexible joint 8 is adjusted by rotating the buckled sleeve 7; the joint heads are used in pairs, and are respectively inserted into the mounting holes of the hole of the flexible joint 8, and the two pairs of joint heads are meshed into a sleeve with an axial through hole and can swing up and down, indicating that the threaded section at the right end of the rod 2 is inserted into the axial through hole; the upper end of the flexible joint 8 is connected to the CN turnout point rail 9 through an insulating bolt group 6; the insulating bolt group 6 includes a bolt group 61, a washer A62, an insulating tube 63 pad and a washer B64, and the insulating tube pad 63 is made of insulating material, and the purpose is to insulate the flexible joint 8 from the CN point rail 9.

[0004] However, in actual use, the CN turnout indication inspection rod has the following deficiencies: first, the shaft sleeve composed of the two joint movable heads can only swing axially at a small angle in the bottom hole cavity of the movable joint 8, resulting in the indication inspection rod being able to adapt to the creeping and jumping of the point rail in only one direction; second, the setting of the insulating bolt group makes it easy for this part to be crushed and produce looseness after being subjected to frequent force, thereby affecting the accuracy and stability of the indication of the turnout's close fitting state.

[0005] The applicant's prior patent CN110454494A discloses an angular contact spherical plain bearing joint plate, which discloses an integral angular contact spherical plain bearing, but the adjusting nut and the sleeve of the inner ring of the spherical plain bearing in the integral angular contact spherical plain bearing are connected by welding. This is extremely unfavorable for processing, and the welding process will reduce the mechanical properties of the bearing inner ring material, shortening the service life of the spherical plain bearing.

[0006] It can be seen that the above-mentioned existing turnout indication inspection rod still has defects and deficiencies in its ability to adapt to the creeping and jumping of the point rail, and further design improvements are urgently needed. How to create a new joint bearing type flexible joint and CN turnout indication inspection rod that can better adapt to the creeping and jumping of the point rail, and is convenient and quick to process and assemble, does not affect the service life of the joint bearing, and can make the close contact state of the point rail after the turnout is switched into place more stable and reliable, has become a goal that urgently needs to be improved in this type of application scenario. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a joint bearing type flexible joint, which has better adaptability to the creeping and jumping of the point rail, and is convenient and quick to process and assemble, does not affect the service life of the joint bearing, and can make the close-fitting state of the point rail after the turnout is switched into place more stable and reliable, thereby overcoming the shortcomings of the existing turnout indication inspection rod in adapting to the creeping and jumping of the point rail.

[0008] In order to solve the above technical problems, the utility model provides a joint bearing type flexible joint, including a flexible joint, and also including a combined joint bearing and a cover nut arranged in the bottom cavity of the flexible joint, the combined joint bearing including a joint bearing outer ring, a joint bearing inner ring and an adjusting nut, the joint bearing inner ring including a spherical segment matched with the joint bearing outer ring and a shaft sleeve segment connected with the spherical segment and extending out of the cavity of the flexible joint, the interior of the shaft sleeve segment is provided with an internal thread threadedly connected to a turnout indicating rod, the exterior of the shaft sleeve segment is provided with a stop platform, the outer periphery of the stop platform is provided with a flat key, the inner ring of the adjusting nut is provided with a boss matched with the stop platform and a full-length keyway matched with the flat key, the outer end of the adjusting nut is also provided with a countersunk hole for installing a spring retaining ring, the adjusting nut is used to realize the axial position of the flexible joint on the turnout indicating rod, and the cover nut is installed on the side of the bottom cavity of the flexible joint away from the shaft sleeve segment, for sealing the combined joint bearing.

[0009] A further improvement includes a retaining ring arranged on the outside of the adjusting nut, the retaining ring being connected to the adjusting nut via a cotter pin, a stopper being provided on the inner ring surface of the retaining ring, the stopper cooperating with the axial notch on the turnout indicating rod to fix the axial position of the adjusting nut on the turnout indicating rod.

[0010] As a further improvement, a plurality of pin holes are provided on the flange of the adjusting nut, a plurality of through holes corresponding to the plurality of pin holes are provided on the outer ring of the retaining ring, and the split pin passes through the through holes on the retaining ring and the pin holes on the adjusting nut to achieve fixation.

[0011] A further improvement includes two M30 hexagonal nuts and an elastic washer arranged on the outside of the retaining ring, and the elastic washer is arranged between the two M30 hexagonal nuts to achieve axial positioning of the retaining ring by being squeezed and deformed.

[0012] A further improvement includes two M30 hexagonal nuts and an elastic washer arranged on the outside of the adjusting nut, wherein the elastic washer is arranged between the two M30 hexagonal nuts and realizes axial positioning of the adjusting nut by being squeezed and deformed.

[0013] As a further improvement, the upper portion of the flexible joint is configured as a screw structure that cooperates with the vertical hole of the CN turnout point rail, and a nut is used to achieve a fixed connection between the flexible joint and the CN turnout point rail.

[0014] As another improvement of the present invention, the present invention further provides a CN turnout indication inspection rod, wherein the CN turnout indication inspection rod comprises the above-mentioned articulated bearing type flexible joint.

[0015] As a further improvement, the turnout indicating rod adopts a self-insulating indicating rod.

[0016] After adopting such a design, the utility model has at least the following advantages:

[0017] 1. The utility model of the joint bearing type flexible joint can greatly improve the crawling and jumping ability of the pointed rail through the cooperation between the outer ring of the joint bearing and the inner ring of the spherical joint bearing, and provide a guarantee for a more stable and reliable representation of the close fitting state of the pointed rail. The combined joint bearing is also improved to avoid the reduction of the mechanical properties of the bearing due to the welding process, and the simplicity of processing and disassembly is greatly improved; the external stop plate setting of the inner ring shaft sleeve section of the bearing can better control the gap distance between the adjustment nut and the flexible joint, meet the activity space of the adjustment nut, and adapt to the crawling and jumping amplitude of the pointed rail. The spring retaining ring is also set to ensure that the adjustment nut will not fall out of the shaft sleeve section, thereby ensuring the integrity of the combined joint bearing, simple processing, and convenient disassembly.

[0018] 2. The retaining ring is also set, and the stopper on the retaining ring cooperates with the axial notch of the turnout indicating rod to achieve the axial position fixation of the adjustment nut on the turnout indicating rod. The M30 hexagonal nut and elastic washer are also set to more effectively ensure the axial fixation of the flexible joint on the turnout indicating rod, making the indication of the close fitting state of the point rail more stable and reliable.

[0019] 3. The direct connection between the upper part of the flexible joint and the CN turnout point rail can effectively avoid the movement of the vertical hole of the point rail caused by wear and collapse of the insulating tube pad, making the display more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Figure 1 It is a structural schematic diagram of an existing CN turnout inspection rod.

[0022] Figure 2 It is a structural schematic diagram of a joint bearing type flexible joint of the utility model.

[0023] Figure 3 The utility model is a structural schematic diagram of an adjusting nut in a joint bearing type flexible joint.

[0024] Figure 4 The utility model is a structural cross-sectional view of an adjusting nut in a joint bearing type flexible joint.

[0025] Figure 5 The utility model is a schematic diagram of the structure of a retaining ring in a joint bearing type flexible joint.

[0026] Figure 6 The utility model is a structural cross-sectional view of a retaining ring in a joint bearing type flexible joint.

[0027] Figure 7 It is a structural schematic diagram of a CN turnout indicating inspection rod of the utility model. DETAILED DESCRIPTION

[0028] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0029] The articulated bearing type flexible joint of this embodiment connects the turnout indicating rod and the CN turnout point rail, and can adjust its axial position at the threaded section of the turnout indicating rod according to the close contact condition so as to adjust to a suitable correct indicating effective length. The turnout indicating rod is connected to the action rod inside the switch machine, and is used to feed back the state of the CN turnout close contact with the basic rail when the point rail is positioned or reversed after each conversion is completed to the inside of the switch machine. Only when the close contact value meets the turnout design requirements will a signal indication of "the turnout is in place and the locomotive can pass through the turnout area at that location" be given. The specific embodiments are as follows.

[0030] See attached Figure 2 As shown, the spherical bearing type flexible joint of this embodiment includes a flexible joint 10 , and a combined spherical bearing 11 and a cover nut 12 arranged in the bottom cavity of the flexible joint 10 .

[0031] The combined joint bearing 11 in this embodiment includes a joint bearing outer ring 111, a joint bearing inner ring 112 and an adjusting nut 113. The joint bearing inner ring 112 includes a spherical segment 1121 that matches the joint bearing outer ring 111 and a sleeve segment 1122 that is connected to the spherical segment 1121 and extends out of the cavity of the flexible joint 10. The interior of the sleeve segment 1122 is provided with an internal thread that is threadedly connected to the turnout indicating rod. The exterior of the sleeve segment 1122 is provided with a stop 1123, and a flat key 1124 is provided on the outer periphery of the stop 1123. The inner ring of the adjusting nut 113 is provided with a boss 1131 that matches the stop 1123 and a full-length key slot 1132 that matches the flat key 1124, as shown in the attached figure. Figure 3 and 4 As shown. During assembly, the full-length keyway 1132 of the adjusting nut 113 corresponds to the flat key 1124, so as to achieve radial fixation of the adjusting nut 113 and the inner ring 112 of the spherical bearing, and ensure that the inner ring 112 of the spherical bearing also rotates synchronously when the adjusting nut 113 rotates; and the cooperation between the stop 1123 and the boss 1131 can achieve axial position fixation of the adjusting nut 113 and the inner ring 112 of the spherical bearing, so as to ensure that there is a certain gap between the adjusting nut 113 and the through-hole end face of the flexible joint 10 after the adjusting nut 113 is installed, so as to facilitate the adjusting nut 113 to drive the inner ring 112 of the spherical bearing to swing at a small angle relative to the outer ring 111 of the spherical bearing, and meet the requirements of the creeping and jumping ability of the switch point rail.

[0032] In addition, the outer end of the adjusting nut 113 is also provided with a countersunk hole 1133 for installing a spring retaining ring 114. The spring retaining ring 114 is arranged between the adjusting nut 113 and the shaft sleeve section 1122, which can effectively prevent the spring retaining ring 114 from escaping from the shaft sleeve section 1122, thereby ensuring the overall fixation of the adjusting nut 113 and the inner ring 112 of the spherical bearing, thereby forming an integral spherical bearing 11 with an assembly relationship.

[0033] In this embodiment, the cover nut 12 is installed on a side of the bottom cavity of the flexible joint 10 away from the shaft sleeve section, and is used to block the combined spherical bearing 11 and fix the combined spherical bearing 11 in the bottom cavity of the flexible joint 10.

[0034] When the articulated bearing type flexible joint of this embodiment is used, the switch indicating rod passes through the articulated bearing inner ring 112, and the threaded section on the switch indicating rod matches the thread inside the sleeve section 1122 of the articulated bearing inner ring 112. By rotating the adjusting nut 113, the axial position of the flexible joint 10 on the switch indicating rod can be achieved.

[0035] In order to ensure that the axial position of the flexible joint 10 on the switch indicating rod remains unchanged, a preferred embodiment is that a retaining ring 115 is further provided on the outer side of the adjusting nut 113 .

[0036] See attached Figure 5 and 6 As shown, the outer ring of the retaining ring 115 is provided with a plurality of through holes 1151, and the inner ring surface of the retaining ring 115 is provided with a stopper 1152. The flange of the adjusting nut 113 is provided with a plurality of pin holes 1134 corresponding to the through holes 1151, and the split pin passes through the through holes 1151 on the retaining ring 115 and the pin holes 1134 on the adjusting nut 113 to achieve the fixation of the two. The stopper 1152 is used to match the axial notch on the turnout indicating rod, that is, the retaining ring 115 can only move axially on the turnout indicating rod, but cannot rotate around the indicating rod, thereby preventing the rotation of the adjusting nut 115, thereby achieving the axial position fixation of the retaining ring 115 and the adjusting nut 113 on the turnout indicating rod.

[0037] A more preferred embodiment is, referring to the attached Figure 7 As shown, two M30 hexagon nuts 3 and an elastic washer 4 can be further provided on the outer side of the retaining ring 115. The elastic washer 4 is provided in the middle of the two M30 hexagon nuts 3. By continuously tightening the M30 hexagon nuts 3, the elastic washer 4 is squeezed and deformed, which can more effectively realize the axial positioning of the retaining ring 115 and further ensure the stability and reliability of the close fitting state of the point rail.

[0038] Of course, the method also includes directly arranging the M30 hexagonal nut 3 and the elastic washer 4 on the outside of the adjusting nut 113, which can also achieve the axial positioning of the adjusting nut 113 on the turnout indicating rod.

[0039] In this embodiment, the upper part of the flexible joint 10 is configured as a screw structure 101 that matches the vertical hole 91 of the CN turnout point rail 9, and the flexible joint 10 is fixedly connected to the CN turnout point rail 9 through a nut 102. By directly connecting and fixing the flexible joint 10 to the CN turnout point rail 9, the looseness of the existing insulating tube pad at the vertical hole of the point rail caused by wear and crushing can be effectively avoided, making the display more stable and reliable.

[0040] When the above-mentioned joint bearing type flexible joint 10 is applied to the CN turnout, the turnout indicating rod adopts a self-insulating indicating rod 2. The self-insulating indicating rod 2 adopts the existing insulating rod sleeve structure, which can ensure the insulation effect of the CN turnout point rail and the switch machine, and meet the smooth operation of the CN turnout indicating inspection rod.

[0041] When the CN turnout point rail 9 is converted into position and fits closely to the basic rail correctly, when the axial position of the flexible joint 10 on the threaded section of the self-insulated indicating rod needs to be adjusted, only the adjusting nut 113 needs to be rotated. When adjusted to a suitable position, the retaining ring 115 and the adjusting nut 113 are fixed by a cotter pin, and then the first M30 hexagonal nut 3 is tightened to fit closely to the retaining ring 115, and then the second M30 hexagonal nut 3 is tightened to press the elastic washer 4 in the middle. After the elastic washer 4 is compressed and deformed, a resistance torque is generated, thereby fixing the axial position of the flexible joint 10 and preventing it from loosening.

[0042] The joint bearing type flexible joint of this embodiment is set by a spherical joint bearing, which can realize universal small-angle swing between the flexible joint and the switch indicating rod, so that it can adapt to the offset of the point rail in any direction without changing the actual effective length of the indicating rod required for correct indication of the close-fitting state, thereby overcoming the defect that the existing flexible joint can only swing up and down; and by eliminating the insulating tube pad setting at the upper end of the flexible joint, the flexible joint is directly rigidly connected to the vertical hole of the point rail, which can avoid the looseness of the point rail connection caused by wear and crushing of the insulating tube pad, making the indication of the CN switch indication inspection rod more stable and reliable.

[0043] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Those skilled in the art may make some simple modifications, equivalent changes or modifications using the technical contents disclosed above, which are all within the protection scope of the present invention.

Claims

1. A spherical bearing type flexible joint, comprising a flexible joint, characterized in that: The nut is installed on the bottom of the movable joint, and the nut is connected with the sleeve section, which is connected with the spherical section and extends out of the cavity of the movable joint. The interior of the sleeve section is provided with an internal thread connected with the thread of the turnout indicating rod. The exterior of the sleeve section is provided with a stopper, and the outer periphery of the stopper is provided with a flat key. The inner ring of the adjusting nut is provided with a boss that cooperates with the stopper and a full-length keyway that cooperates with the flat key. The outer end of the adjusting nut is also provided with a countersunk hole for installing a spring retaining ring. The adjusting nut is used to realize the axial position of the movable joint on the turnout indicating rod. The cover nut is installed on the side of the bottom cavity of the movable joint away from the sleeve section, and is used to seal the combined joint bearing.

2. The spherical bearing type flexible joint according to claim 1, characterized in that: It also includes a retaining ring arranged on the outside of the adjusting nut, the retaining ring is connected to the adjusting nut through a cotter pin, a stopper is provided on the inner ring surface of the retaining ring, and the stopper cooperates with the axial notch on the turnout indicating rod to fix the axial position of the adjusting nut on the turnout indicating rod.

3. The spherical bearing type flexible joint according to claim 2, characterized in that: The flange of the adjusting nut is provided with a plurality of pin holes, the outer ring of the retaining ring is provided with a plurality of through holes corresponding to the plurality of pin holes, and the split pin passes through the through holes on the retaining ring and the pin holes on the adjusting nut to achieve fixation.

4. The spherical bearing type flexible joint according to claim 3, characterized in that: It also includes two M30 hexagonal nuts and an elastic washer arranged on the outside of the retaining ring. The elastic washer is arranged between the two M30 hexagonal nuts and realizes axial positioning of the retaining ring by being squeezed and deformed.

5. The spherical bearing type flexible joint according to claim 1, characterized in that: It also includes two M30 hexagonal nuts and an elastic washer arranged on the outside of the adjusting nut. The elastic washer is arranged between the two M30 hexagonal nuts and realizes axial positioning of the adjusting nut by being squeezed and deformed.

6. The spherical bearing type flexible joint according to any one of claims 1 to 5, characterized in that: The upper part of the flexible joint is configured as a screw structure that matches the vertical hole of the CN turnout point rail, and the flexible joint and the CN turnout point rail are fixedly connected by a nut.

7. A CN turnout inspection rod, characterized in that: A spherical bearing type flexible joint comprising the one described in any one of claims 1 to 6.

8. The CN turnout indication inspection rod according to claim 7, characterized in that: The turnout indicating rod adopts a self-insulated indicating rod.

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