CN110450818B - Closed rotary type close-fitting inspector - Google Patents
Closed rotary type close-fitting inspector Download PDFInfo
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- CN110450818B CN110450818B CN201910743211.7A CN201910743211A CN110450818B CN 110450818 B CN110450818 B CN 110450818B CN 201910743211 A CN201910743211 A CN 201910743211A CN 110450818 B CN110450818 B CN 110450818B
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- cam
- sleeved
- inspector
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- 230000007246 mechanism Effects 0.000 claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 60
- 230000003068 static effect Effects 0.000 claims description 34
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- 229910000906 Bronze Inorganic materials 0.000 description 2
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- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 2
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- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
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- 230000003321 amplification Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/10—Locking mechanisms for points; Means for indicating the setting of points
- B61L5/107—Locking mechanisms for points; Means for indicating the setting of points electrical control of points position
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention belongs to the technical field of rail transit safety, and provides a closed rotary type close-fitting inspector, which comprises an inspector main body, wherein the inspector main body comprises a detection mechanism and a shell assembly; the detection mechanism comprises a rotation mechanism and a contact seat; the rotating mechanism comprises a crank arm, a main shaft, a first sliding bearing, a second sliding bearing, a lower baffle, two or more groups of cam components, an upper baffle and a bushing. The close-fitting inspector adopts the cam-like mechanism to convert the linear-like motion of the turnout into the rotary motion, and the device has small volume and light weight and is convenient for on-site installation and maintenance; the close-contact detector can adapt to vibration and crawling of the turnout in multiple directions, reduces abrasion of the close-contact detector and the rod piece, and ensures detection accuracy and effectiveness.
Description
Technical Field
The invention belongs to the technical field of rail transit safety, and particularly relates to a closed rotary type close-fitting inspector.
Background
The turnout is a line device applied when rolling stock is transferred from one track to the other track, is an essential track device for realizing the line transfer or the line crossing operation of a train, is a weak link of driving equipment, has the characteristics of complex structure, large load, shorter service life, large maintenance and repair investment and the like, and becomes one of key technologies for limiting the operation speed of the train.
The switch machine is a driving safety device for switching the switch, and can realize the switch switching, locking and supervision functions. The close contact detector is used for detecting the close contact and the separation state of the switch tongue rail or the switch rail, and can also be used as a device for expressing the pinch break.
Along with the continuous development of the railway in China to high speed and heavy load, the number of the turnout is continuously increased, the traction point of the turnout is developed from a single point to two points or more than three points, and the number 62 turnout is up to 12 traction points (9 points of the switch rail and 3 points of the switch rail). The contact between the point rail and the stock rail or between the point rail and the wing rail is ensured by the switch traction device, but is also limited to a small distance range at the traction point. When the distance between the two traction points is too long, gaps exist between the switch rail and the stock rail or foreign matters are too large, the running of the train can swing at high speed, and even the safety is lost. It is therefore particularly important to add a close-fitting checker between the plurality of traction points of the switch.
The domestic prior close-fitting inspector adopts a linear motion mode similar to the representation part of a switch machine, and the following problems generally exist: the protection grade of the shell of the conventional linear type closely-attached inspector is only IP54, and in practical application, water or dust entering the equipment easily causes corrosion of internal moving parts and blockage; the existing mounting devices of the close-fitting inspectors are mostly connected by adopting shafts at two ends, so that the degree of freedom is insufficient, and when a train passes through, the vibration direction of the switch rail is multidimensional, so that the close-fitting inspectors are easily damaged due to the limitation of the degree of freedom of the mounting devices in a certain direction; the mounting device can not realize self-adaptive adjustment or lack of adjustment design when the point rail is crawled after the point rail is influenced by the principle of thermal expansion and cold contraction; the linear type close-fitting inspector is not suitable for installing a heart rail.
To solve the above-mentioned problem, patent 201420111413.2 (CN 203766822U) proposes a closed disc type close-contact inspector, which converts the translation of the switch rail into the rotation of the close-contact inspector through a link mechanism in practical application, the motion of the link mechanism in the conversion process is a composite motion of translation and rotation, the relatively independent structures of the close-contact disc and the repellent disc realize the respective independent adjustment of the close-contact position and the repellent position, and the close-contact disc and the repellent disc adopt a laminated integral structure to enable the overall size of the close-contact inspector to be miniaturized. However, the contact points in the form of the arc-shaped contact points are easy to wear, normal use of the contact points can be influenced, and long-term wear can also cause severe influences such as contact point breakage and the like, so that the service life of the contact point tester is shortened. Patent 201410674505.6 (CN 104442922 a) proposes a switch close-contact detector, which adopts gears to perform displacement amplification, but because of gaps existing in the size when the gears are meshed, the detection error is larger, the precision is lower, the application of the gears also causes the increase of conversion resistance, negative influence is generated on switch conversion, and the gaps between the gears are increased along with the extension of the service time, so that the service life of the close-contact detector is seriously influenced.
Disclosure of Invention
In view of the above problems, the present invention provides a hermetic rotary type close-fitting inspector including an inspector main body,
The inspector body includes a detection mechanism and a housing assembly;
The detection mechanism comprises a rotation mechanism and a contact seat;
The rotating mechanism comprises a crank arm, a main shaft, a first sliding bearing, a second sliding bearing, a lower baffle, two or more groups of cam components, an upper baffle and a bushing;
The upper baffle, the cam assembly, the lower baffle, the second sliding bearing and the first sliding bearing are sequentially sleeved on the main shaft;
One end of the main shaft is fixedly connected with one end of the crank arm through a first pin shaft;
The contact seat comprises a static contact mechanism, a movable contact mechanism and an insulating seat;
the static contact mechanism comprises two symmetrically arranged static contact groups;
the static contact group comprises a static contact sheet, a static contact and a rubber pad;
one end of the static contact sheet is fixedly arranged on the inner wall of the insulating seat, and the static contact is riveted at the other end of the static contact sheet;
the movable contact mechanism comprises two movable contact groups which are symmetrically arranged;
the movable contact group comprises a movable contact block, a roller, a movable contact and a contact spring plate;
the movable contact block is hinged on the insulating seat through a second pin shaft;
The movable contact is riveted on one side of the movable contact block, which is close to the static contact;
The other end of the movable contact block is hinged with a roller;
the cam component is sleeved in the contact seat;
the shell assembly comprises a protective shell, a bottom plate and a lower base plate;
The contact seat is sleeved in the protective shell.
Further, the rotating mechanism comprises an upper speed moving plate, an upper starting plate, a lower starting plate and a lower speed moving plate;
the upper quick-action piece and the lower quick-action piece have the same structure and are symmetrically arranged;
The upper starting piece and the lower starting piece have the same structure and are symmetrically arranged;
The upper quick-action piece is sleeved on the upper starting piece to form a group of cam components;
the lower quick-action piece is sleeved on the lower starting piece to form another group of cam components.
Further, the bushing is sleeved on the main shaft, and the bushing and the main shaft are in interference fit;
the upper starting sheet and the lower starting sheet are sleeved on the bushing, the upper starting sheet and the bushing are in interference fit, and the lower starting sheet and the bushing are in interference fit.
Further, the lower starting piece comprises a cam main body and a sleeving cylinder, and the cam main body is sleeved on the outer side of the sleeving cylinder;
The outer circumferential cambered surface of the cam main body comprises a third cambered surface, a second connecting inclined surface and a fourth cambered surface;
The outer side circumference cambered surface of the lower speed moving plate comprises a first cambered surface, a first connecting inclined surface and a second cambered surface.
Further, the lower starting piece further comprises a circular ring plate, wherein the circular ring plate is arranged between the cam main body and the sleeve cylinder, and the circular ring plate is fixedly connected with the cam main body and the sleeve cylinder respectively.
Further, the sum of the height of the cam main body along the axis direction of the cam main body and the height of the lower snap-action piece along the axis direction of the cam main body is smaller than the height of the sleeve cylinder along the axis direction of the sleeve cylinder.
Further, the lower quick-action piece is sleeved on a sleeved cylinder of the lower starting piece, and the lower quick-action piece and the sleeved cylinder are in clearance fit;
The lower speed moving plate is provided with a limiting hole, and the lower starting plate is provided with a limiting column;
One end of the limiting post is movably clamped in the limiting hole.
Further, the two groups of cam components are symmetrically arranged, and one end surfaces of the two groups of cam components are mutually attached;
One end face of the upper baffle plate is attached to the other end face of the cam assembly;
one end face of the lower baffle plate is attached to the other end face of the other group of cam assemblies;
The upper baffle plate and the lower baffle plate are fixedly sleeved on the main shaft.
Further, the rubber pad is arranged between the static contact piece and the insulating seat;
The movable contact block is connected with the insulating seat through a contact spring plate.
Further, the bottom plate and the protective shell are connected to form a closed cavity;
The contact seat is arranged in the closed cavity, and the insulating seat is fixedly connected with the bottom plate;
one end face of the lower base plate is fixedly connected with one end face of the bottom plate.
Further, the main shaft penetrates through the bottom plate and the lower base plate respectively;
The bottom plate is connected with the second sliding bearing;
the lower backing plate is connected with the first sliding bearing;
O-shaped rings are arranged at the joint of the bottom plate and the second sliding bearing and the joint of the lower base plate and the first sliding bearing;
the O-shaped ring is sleeved on the main shaft.
Further, the close-fitting inspector further comprises a first connecting iron, a joint bearing, a switching shaft, a connecting rod and a second connecting iron;
One end of the crank arm is connected with one side of the switching shaft through a joint bearing;
the switching shaft is arranged at one end of the connecting rod;
the other end of the connecting rod is connected with the second connecting iron;
The lower backing plate is connected with the first connecting iron.
The close-fitting inspector adopts the cam-like mechanism to convert the linear-like motion of the turnout into the rotary motion, and the device has small volume and light weight and is convenient for on-site installation and maintenance; the close-contact detector can adapt to vibration and crawling of the turnout in multiple directions, reduces abrasion of the close-contact detector and the rod piece, and ensures detection accuracy and effectiveness.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a schematic diagram of the construction of a tamper evident tester of the present invention;
FIG. 2 shows a schematic structural view of the inspector body of the present invention;
FIG. 3 shows a schematic structural view of the rotary mechanism of the present invention;
FIG. 4 shows a cross-sectional view in the direction A-A of FIG. 3;
FIG. 5 is a schematic view showing the structure of the lower speed rotor of the present invention;
FIG. 6 shows a schematic structural view of the lower activation plate of the present invention;
FIG. 7 shows a top view of the contact base of the present invention;
fig. 8 shows a schematic structural view of the contact base of the present invention;
Fig. 9 shows a schematic view of a scenario in which the close-up checker of the present invention is used in a switch.
In the figure: the inspection device comprises a 1 inspection device main body, a 2 first connecting iron, a3 joint bearing, a4 switching shaft, a 5 connecting rod, a 6 second connecting iron, a 7 protection shell, a 8 preformed hole, a 9 bottom plate, a 10 lower backing plate, a 11 crank arm, a 12 main shaft, a 13 first pin shaft, a 14 first sliding bearing, a 15 second sliding bearing, a 16 lower baffle plate, a 17 lower moving plate, a 171 limiting hole, a 172 sleeve round hole, 173 first arc surfaces, 174 first connecting inclined surfaces, 175 second arc surfaces, a 18 lower starting plate, a 181 cam main body, 1811 third arc surfaces, 1812 second connecting inclined surfaces, 1813 fourth arc surfaces, 182 sleeve round columns, 1821 mounting holes, 183 round ring plates, 19 upper starting plates, 20 upper moving plates, 21 upper baffle plates, 22 first fastening nuts, 23 sleeves, 24 limiting columns, 25 insulating seats, 26 moving contact blocks, 27 second pin shafts, 28 third pin shafts, 29 rollers, 30 moving contact plates, 31 static contact plates, 32 static contact plates, 33 contact plates, 34 mounting bolts, 35 mounting nuts, 36O rings and 37 elastic sheets.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a closed rotary type close-fitting inspector which can be arranged on a turnout sleeper or a supporting plate or a steel rail.
Fig. 1 shows a schematic structural view of the close proximity checker of the present invention, which includes a checker body 1, a first connecting iron 2, a connecting rod 5, and a second connecting iron 6, as shown in fig. 1. The inspector body 1 is arranged on the first connecting iron 2, and one end of a crank arm 11 of the inspector body 1 is hinged with one end of the adapter shaft 4 through the knuckle bearing 3; the switching shaft 4 is arranged at one end of the connecting rod 5; the other end of the connecting rod 5 is connected with one end of the second connecting iron 6. One end of a crank arm 11 of the inspector body 1 is hinged with one end of the adapter shaft 4 through the joint bearing 3, so that the adaptability of vibration and crawling of the closely attached inspector is enhanced.
Illustratively, both the first connecting iron 2 and the second connecting iron 6 may take an "L" configuration. The first connecting iron 2 is mounted on the stock rail and the second connecting iron 6 is mounted on the point rail, the second connecting iron 6 following the movement of the point rail when the switch machine controls the movement of the point rail. The second connecting iron 6 pushes the crank arm 11 on the inspector body 1 through the connecting rod 5, and the inspector body 1 realizes close-fitting inspection and represents the inspection result.
In the practical use process, the shape and the structure of the first connecting iron 2 and the second connecting iron 6, and the length of the connecting rod 5 can be adaptively adjusted. The close-contact inspector can be directly installed on the steel rail through the first connecting iron 2 and the second connecting iron 6, so that the field installation space is saved; meanwhile, the rail is suitable for mounting the switch rail and the core rail, is convenient to mount and maintain, and is beneficial to maintenance operation of railway work.
The inspector body 1 is a core of the close-fitting inspector, and the inspector body 1 comprises a detection mechanism and a shell assembly; the detection mechanism comprises a rotation mechanism and a contact seat.
The housing assembly comprises a protective outer shell 7, a bottom plate 9 and a lower backing plate 10. Illustratively, as shown in fig. 2, the protective housing 7 is connected to the base plate 9 to form a closed cavity, the contact holder is mounted in the closed cavity, and the contact holder is mounted on the base plate 9. Further, a connection bolt is arranged on the protective housing 7, the connection bolt is electrically connected with a wire contact in the contact seat, the close-contact detector is electrically connected with external indicating equipment such as an indicator lamp and an alarm through the connection bolt, and the detection result of the close-contact detector is represented through the external indicating equipment. Further, a preformed hole 8 is provided on one side of the protective housing 7. Specifically, the preformed hole 8 is an anti-theft lock mounting hole on the protective casing 7.
Further, the lower pad 10 is disposed below the bottom plate 9. Specifically, the inspector body 1 is mounted on the first connecting iron 2 through a lower pad 10. Further, the crank arm 11 is disposed below the lower pad 10. Specifically, the crank arm 11 is disposed outside the closed cavity.
The lever 11 is a transmission member of a rotation mechanism, which includes, as shown in fig. 3 by way of example: the crank arm 11, the main shaft 12, the first sliding bearing 14, the second sliding bearing 15, the O-ring 36, the lower baffle 16, the lower snap-action tab 17, the lower actuating tab 18, the upper actuating tab 19, the upper snap-action tab 20 and the upper baffle 21. Specifically, the lower baffle 16, the lower snap-action piece 17, the lower actuating piece 18, the upper actuating piece 19, the upper snap-action piece 20 and the upper baffle 21 are sleeved on the outer side of the main shaft 12 in sequence from bottom to top. The upper quick-action piece 20 and the lower quick-action piece 17 have the same structure and are symmetrically arranged; the lower actuating plate 18 and the upper actuating plate 19 have the same structure and are symmetrically arranged. Specifically, the upper snap-action tab 20 cooperates with the upper actuation tab 19 to form a set of cam assemblies, and the lower snap-action tab 17 cooperates with the lower actuation tab 18 to form a set of cam assemblies. The two groups of cam components have the same structure and are symmetrically arranged.
Further, the lower end surface of the upper actuating plate 19 is attached to the upper end surface of the lower actuating plate 18, and the lower baffle 16 and the upper baffle 21 clamp the two sets of cam assemblies, so as to ensure the structural stability of the two sets of cam assemblies. Further, a first fastening nut 22 is installed at the upper end of the upper baffle 21. Specifically, the first fastening nut 22 is screwed to the upper end of the main shaft 12, and the lower end surface of the first fastening nut 22 abuts against the upper end surface of the upper baffle 21. Further, a second slide bearing 15 and a first slide bearing 14 are provided below the lower baffle 16. Specifically, the first sliding bearing 14 and the second sliding bearing 15 have the same structure and are both sleeved on the main shaft 12.
Further, the second slide bearing 15 is disposed below the lower baffle 16, and the first slide bearing 14 is disposed below the second slide bearing 15. Specifically, the main shaft 12 sequentially passes through the bottom plate 9 and the lower base plate 10 from top to bottom; the bottom plate 9 is sleeved on the second sliding bearing 15, and the lower base plate 10 is sleeved on the first sliding bearing 14; and the connection of the bottom plate 9 and the second slide bearing 15, and the connection of the lower pad 10 and the first slide bearing 14 are provided with O-rings 36. The first sliding bearing 14 and the second sliding bearing 15 can be made of polytetrafluoroethylene materials, so that mechanical abrasion caused by conversion of connecting parts in the device is reduced; and the device connection part is sealed by the O-shaped ring 36, so that the waterproof performance of the device is enhanced. The protection level of the secret inspector can reach IP67, and the higher protection level can further ensure the reliability of long-term operation of equipment and reduce maintenance cost.
Further, one end of the crank arm 11 is fixedly connected with the lower end of the main shaft 12 through a first pin shaft 13. Specifically, the crank arm 11 is disposed below the lower pad 10.
Both sets of cam assemblies are sleeved on the main shaft 12, and illustratively, as shown in fig. 4, a bushing 23 is sleeved on the main shaft 12, and the main shaft 12 and the bushing 23 are in interference fit. Further, the lower actuating tab 18 and the upper actuating tab 19 are both sleeved on the bushing 23. Specifically, the lower actuating tab 18 and the upper actuating tab 19 are respectively in interference fit with the bushing 23, so as to ensure that the upper actuating tab 19, the lower actuating tab 18 and the spindle 12 maintain synchronous movement. Further, the lower snap-action tab 17 is sleeved on the lower actuation tab 18, and the upper snap-action tab 20 is sleeved on the upper actuation tab 19. Specifically, the lower snap-action piece 17 and the lower actuating piece 18, and the upper snap-action piece 20 and the upper actuating piece 19 are in clearance fit, so as to ensure the snap-action function of the upper snap-action piece 20 and the lower snap-action piece 17, and improve the safety and reliability of the operation of the device. The snap-action function of the snap-action piece means that when the snap-action piece rotates to a specific position, the contact can be quickly turned on.
Further, a limit post 24 is embedded on the lower starting piece 18, and one end of the limit post 24 is clamped in the lower quick-action piece 17; the upper starting piece 19 is also embedded with a limiting column 24, and one end of the limiting column 24 is clamped in the upper quick-action piece 20. Specifically, one end of the limiting post 24 is fixedly connected with the starting piece, the other end of the limiting post 24 is movably clamped in the limiting hole 171 of the quick-action piece, and the limiting post 24 plays a limiting role on the limiting hole 171.
The upper snap-action piece 20 and the lower snap-action piece 17 have the same structure, and the following description will take the snap-action piece 17 as an example of the present invention. Illustratively, as shown in fig. 5, the lower snap-action tab 17 has a disk shape, and the circumferential arc surface of the lower snap-action tab 17 includes a first arc surface 173 and a second arc surface 175. Specifically, the radius of the arc corresponding to the first arc surface 173 is R 1, and the radius of the arc corresponding to the second arc surface 175 is R 2,R1<R2; the two ends of the first arc surface 173 and the two ends of the second arc surface 175 are respectively connected through a first connecting inclined plane 174, and the lower quick-action piece 17 is of a cam structure. Further, the lower snap-action piece 17 is provided with a limiting hole 171 and a sleeve round hole 172. Specifically, the center of the sleeve round hole 172 coincides with the center of the arc corresponding to the first arc surface 173 and the center of the arc corresponding to the second arc surface 175; the limiting hole 171 may be disposed on the lower speed moving plate 17 adjacent to the second circular arc surface 175; the lower snap-action tab 17 has a height H 1 in the axial direction thereof.
The lower actuation tab 18 and the upper actuation tab 19 are identical in structure, and the following actuation tab 18 is described as an example of the present invention. Illustratively, as shown in fig. 6, the lower actuating plate 18 is in a shape of a circular truncated cone, and the lower actuating plate 18 includes a cam body 181, a socket cylinder 182, and a circular ring plate 183. Specifically, the cam main body 181 is sleeved on the outer side of the sleeve cylinder 182, the cam main body 181 is fixedly connected with the sleeve cylinder 182 through a circular ring plate 183, and the height of the circular ring plate 183 along the axial direction is H 2. Further, the cam body 181 has a columnar shape, and the outer circumferential arc surface of the cam body 181 includes a third arc surface 1811, a second connection inclined surface 1812, and a fourth arc surface 1813. Specifically, the radius of the third arc surface 1811 corresponds to R 3, and the radius of the fourth arc surface 1813 corresponds to R 4,R3<R4; both ends of the third arc surface 1811 and both ends of the fourth arc surface 1813 are respectively connected through a second connecting inclined surface 1812, and the cam main body 181 has a cam structure. Further, the sleeve cylinder 182 is cylindrical, and an axle center of the sleeve cylinder 182 is provided with a mounting hole 1821. Specifically, the lower actuating plate 18 is sleeved and mounted on the bushing 23 through a mounting hole 1821, and the lower actuating plate 18 is in interference fit with the bushing 23; the center of the third arc surface 1811 corresponds to the center of the arc, the center of the fourth arc surface 1813 corresponds to the center of the arc, and the axis of the sleeve cylinder 182 are coincident.
Further, an end surface of the cam body 181 is flush with an end surface of the socket cylinder 182; the height of the cam main body 181 along the axial direction is H 3 and H 2<H3; the height of the sleeve cylinder 182 along the axial direction is H 4. The height of the annular plate 183 may be the same as the height of the cam body 181, i.e., the annular plate 183 and the cam body 181 may be provided as the same plate surface; the height of the circular plate 183 provided by the embodiment of the invention is smaller than that of the cam main body 181, so that the contact surface between the cam main body 181 and the lower quick-action piece 17 is reduced, and the friction influence and abrasion between the quick-action piece and the starting piece are reduced.
Further, the lower snap-action piece 17 is sleeved on the sleeved cylinder 182, and the lower snap-action piece 17 is in clearance fit with the sleeved cylinder 182; and H 1+H3<H4. Realizing the snap-action function of the lower snap-action tab 17.
Further, the cam body 181 is provided with a limit post 24. Specifically, the limiting post 24 is movably clamped in the limiting hole 171 of the lower speed moving plate 17; one end of the limiting post 24 may be embedded and fixed in the cam main body 181, and the limiting post 24 and the cam main body 181 may be integrally formed.
The contact base is sleeved on the outer side of the rotating mechanism, the bottom of the contact base is fixedly connected with the upper end face of the bottom plate 9, and the contact base comprises two groups of static contact mechanisms, two groups of movable contact mechanisms and an insulating base 25 as shown in fig. 7 and 8.
The static contact mechanism comprises two static contact groups which are symmetrically arranged.
Each of the stationary contact groups includes a stationary contact plate 31, a stationary contact 32, and a rubber pad 37. Further, the stationary contact pieces 31 are symmetrically installed on the inner wall of the insulating base 25. Specifically, one end of the stationary contact 31 is mounted on the insulating base 25 by a mounting bolt 34 and a mounting nut 35. Further, the stationary contact 32 is fixed to the other end of the stationary contact piece 31 by caulking. Specifically, the two sets of the static contact plates 31 are electrically connected to the connection bolts respectively. Further, a rubber pad 37 is provided between the stationary contact 31 and the insulating base 25. Specifically, the rubber pad 37 is mounted on the mounting portion of the mounting bolt 34, for suppressing deformation of the stationary contact 31.
The movable contact mechanism comprises two movable contact groups which are symmetrically arranged.
Each movable contact group comprises a movable contact block 26, a roller 29, a movable contact 30 and a contact spring 33. Further, the movable contact block 26 is hinged to the insulating base 25 through a second pin 27. Specifically, the movable contact block 26 may rotate around the second pin 27. Further, a movable contact 30 is riveted to one end of the movable contact block 26 near the stationary contact 32. Specifically, the movable contact block 26 is electrically connected with the connection bolt; the movable contact 30 and the static contact 32 are both in a riveting silver contact mode, and compared with the original beryllium bronze arc discharge contact, the pressure type contact is smaller in contact resistance and better in conductivity, the problems of signal loss and the like caused by poor conductivity are avoided, the service life of the close-contact detector is prolonged, and the safety and reliability of long-term use are improved.
Further, the movable contact block 26 is connected to the insulating base 25 through a contact spring 33. Specifically, the contact spring plate 33 is mounted on the insulating seat 25 through a mounting bolt 34 and a mounting nut 35; the contact spring piece 33 provides elastic support for the movable contact block 26; the contact spring piece 33 can be made of stainless steel 304 material in a metal spring piece mode, and compared with a common beryllium bronze spring, the stainless steel spring piece is more dependent on the tensile property of the material, can provide more stable resilience force, and has longer service life.
Further, a roller 29 is hinged to one end of the movable contact block 26 away from the insulating base 25 through a third pin 28. Specifically, the roller 29 is a power transmission component of the movable contact group, and when the rotating mechanism rotates, the cam structure of the starting piece produces rolling extrusion on the roller 29, so as to drive the movable contact block 26 to rotate, and make the movable contact 30 on one side and the static contact 32 on one side contact and conduct.
Further, the contact base comprises two groups of static contact mechanisms but not limited to two groups of static contact mechanisms and two groups of movable contact mechanisms but not limited to two groups of movable contact mechanisms. Each set of movable contact mechanisms corresponds to a set of stationary contact mechanisms, and each set of movable contact mechanisms corresponds to a set of cam assemblies. Specifically, the contact of the close-fitting detector is divided into an upper layer and a lower layer, the upper contact and the lower contact adopt a parallel connection mode, and the parallel connection mode can form signal redundancy, so that the reliability and the safety performance of the equipment are improved. The spot inspector can detect the spot and the reject state of a single point rail (or point rail), respectively, and thus a pair of spot inspectors needs to be used for each detection point.
Specifically, the disconnection of the dynamic and static contacts is realized by a starting sheet; the switch-on (snap action) is realized by a snap-action tab. The quick moving plate moves along with the starting plate, but the quick moving plate and the starting plate are not completely synchronous, and the quick moving plate has a certain moving amount under the limit of the limit post.
The close-contact inspector adopts the adapter (such as the knuckle bearing 3 and the adapter shaft 4) to convert the quasi-linear motion of the turnout into the rotary motion of the rotary part, and uses the cam mechanism to control the contact to open and close, thereby simplifying the equipment structure.
The working principle of the close contact detector is described by taking a switch as an example, and as shown in fig. 9, the switch comprises two groups of switch rails and two groups of stock rails, and a group of close contact detectors are arranged between each group of switch rails and each stock rail and are electrically connected with an external signal lamp through a wiring bolt. Specifically, a first connecting iron 2 of the first close-contact detector is fixedly connected with the stock rail, and a second connecting iron 6 of the first close-contact detector is fixedly connected with the switch rail; the first connecting iron 2 of the second close contact detector is fixedly connected with the switch rail, and the second connecting iron 6 of the second close contact detector is fixedly connected with the stock rail.
Before switch conversion, the first close-contact detector displays that the corresponding stock rail and the switch rail are in a repulsive state, and the second close-contact detector displays that the corresponding stock rail and the switch rail are close-contact devices. After the switch is switched, the first close-contact detector displays that the corresponding stock rail and the switch rail are in a close-contact state, and the second close-contact detector displays that the corresponding stock rail and the switch rail are in a repulsive device.
Taking the first close-contact inspector as an example, the operation process of the close-contact inspector in the switch conversion process will be described. Before switch conversion, the lower actuating plate 18 and the upper actuating plate 19 in the first close contact detector respectively collide with two groups of rollers 29 on the same side of the contact seat and are separated from two groups of rollers 29 on the other side. Specifically, the fourth arc surfaces 1813 on the lower actuating plate 18 and the upper actuating plate 19 respectively collide with the two sets of rollers 29 on the same side; the third arc surfaces 1811 of the lower actuating plate 18 and the upper actuating plate 19 respectively face the two sets of rollers 29 on the other side, and are separated from the two sets of rollers 29. The corresponding movable contact 30 and static contact 32 of the two sets of rollers 29 on the other side are caused to contact, and the external signal lamp displays the signal that the stock rail and the switch rail are in the repulsive state currently.
When the turnout is switched, the connecting rod 5 moves, and the connecting rod 5 drives the crank arm 11 and the main shaft 12 to rotate. The spindle 12 rotates the upper 19 and lower 18 actuating tabs.
After switch switching, the cam body 181 angles on the upper 19 and lower 18 actuating plates change. Specifically, the roller 29 on one side which is abutted against the starting piece before the switch is switched is separated from the starting piece after the switch is switched; the other side roller 29, which is separated from the starting piece before switch switching, abuts against the starting piece after switch switching. Specifically, before switch conversion, a side movable contact 30 and a side static contact 32 which are separated from each other are contacted with each other after switch conversion; before switch switching, the movable contact 30 and the stationary contact 32 on the sides contacting each other are separated from each other after switch switching. Therefore, after the switch is switched, the external signal lamp displays the signal that the stock rail and the switch rail are in the close state.
Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A closed rotary type close-fitting inspector, characterized in that the close-fitting inspector comprises an inspector body (1), wherein the inspector body (1) comprises a detection mechanism and a shell component;
The detection mechanism comprises a rotation mechanism and a contact seat;
The rotating mechanism comprises a crank arm (11), a main shaft (12), a first sliding bearing (14), a second sliding bearing (15), a lower baffle plate (16), two or more groups of cam components, an upper baffle plate (21) and a bushing (23);
The upper baffle (21), the cam component, the lower baffle (16), the second sliding bearing (15) and the first sliding bearing (14) are sequentially sleeved on the main shaft (12);
one end of the main shaft (12) is fixedly connected with one end of the crank arm (11) through a first pin shaft (13);
The rotating mechanism comprises an upper speed moving plate (20), an upper starting plate (19), a lower starting plate (18) and a lower quick moving plate (17); the upper quick-action piece (20) and the lower quick-action piece (17) have the same structure and are symmetrically arranged; the upper starting piece (19) and the lower starting piece (18) have the same structure and are symmetrically arranged; the upper speed moving plate (20) is sleeved on the upper starting plate (19) to form a group of cam components;
The lower speed moving plate (17) is sleeved on the lower starting moving plate (18) to form another group of cam components; the lower speed moving plate (17) is disc-shaped, and the circumferential cambered surface of the lower speed moving plate (17) comprises a first cambered surface (173) and a second cambered surface (175); two ends of the first arc surface (173) and two ends of the second arc surface (175) are respectively connected through a first connecting inclined plane (174), and the lower speed moving plate (17) is of a cam structure;
The lower starting piece (18) is in a round table shape, the lower starting piece (18) comprises a cam main body (181), a sleeving cylinder (182) and a circular ring plate (183), the cam main body (181) is sleeved on the outer side of the sleeving cylinder (182), the circular ring plate (183) is arranged between the cam main body (181) and the sleeving cylinder (182), the circular ring plate (183) is fixedly connected with the cam main body (181) and the sleeving cylinder (182) respectively, the cam main body (181) is in a column shape, the outer circumferential cambered surface of the cam main body (181) comprises a third cambered surface (1811), a second connecting inclined surface (1812) and a fourth cambered surface (1813), two ends of the third cambered surface (1811) are connected with two ends of the fourth cambered surface (1813) respectively through the second connecting inclined surface (1812), and the cam main body (181) is in a cam structure;
The contact seat comprises a static contact mechanism, a movable contact mechanism and an insulating seat (25);
the static contact mechanism comprises two symmetrically arranged static contact groups;
the static contact group comprises a static contact sheet (31), a static contact (32) and a rubber pad (37);
one end of the static contact sheet (31) is fixedly arranged on the inner wall of the insulating seat (25), and the static contact (32) is riveted on the other end of the static contact sheet (31);
the movable contact mechanism comprises two movable contact groups which are symmetrically arranged;
the movable contact group comprises a movable contact block (26), a roller (29), a movable contact (30) and a contact spring (33);
The movable contact block (26) is hinged on the insulating seat (25) through a second pin shaft (27);
The movable contact (30) is riveted on one side, close to the static contact (32), of the movable contact block (26);
The other end of the movable contact block (26) is hinged with a roller (29);
the cam component is sleeved in the contact seat;
The shell assembly comprises a protective shell (7), a bottom plate (9) and a lower base plate (10);
The contact seat is sleeved in the protective shell (7).
2. The close proximity checker according to claim 1, characterized in that the bushing (23) is sleeved on the spindle (12), and the bushing (23) and the spindle (12) are an interference fit;
the upper starting piece (19) and the lower starting piece (18) are sleeved on the bushing (23), the upper starting piece (19) and the bushing (23) are in interference fit, and the lower starting piece (18) and the bushing (23) are in interference fit.
3. The adhesion tester according to claim 1, wherein the sum of the height of the cam main body (181) in the axial direction thereof and the height of the lower speed plate (17) in the axial direction thereof is smaller than the height of the socket cylinder (182) in the axial direction thereof.
4. The close proximity checker according to claim 1, characterized in that the lower speed moving plate (17) is sleeved on a sleeved cylinder (182) of the lower start moving plate (18), and the lower speed moving plate (17) and the sleeved cylinder (182) are in clearance fit;
A limiting hole (171) is formed in the lower speed moving plate (17), and a limiting column (24) is arranged on the lower starting plate (18);
One end of the limiting column (24) is movably clamped in the limiting hole (171).
5. The close proximity checker according to claim 1, wherein two sets of the cam members are symmetrically arranged, and one end surfaces of the two sets of the cam members are attached to each other;
one end face of the upper baffle plate (21) is attached to the other end face of the cam assembly;
one end surface of the lower baffle plate (16) is attached to the other end surface of the other group of cam components;
The upper baffle (21) and the lower baffle (16) are fixedly sleeved on the main shaft (12).
6. The adhesion tester as claimed in claim 1, wherein the rubber pad (37) is disposed between the stationary contact piece (31) and the insulating base (25);
the movable contact block (26) is connected with the insulating seat (25) through a contact spring piece (33).
7. A close proximity checker according to claim 1, characterized in that the bottom plate (9) and the protective casing (7) form a closed cavity by connection;
the contact seat is arranged in the closed cavity, and the insulating seat (25) is fixedly connected with the bottom plate (9);
one end face of the lower base plate (10) is fixedly connected with one end face of the bottom plate (9).
8. A close proximity checker according to claim 7, characterized in that the main shaft (12) penetrates the bottom plate (9) and the lower pad (10), respectively;
the bottom plate (9) is connected with the second sliding bearing (15);
the lower pad (10) is connected with the first sliding bearing (14);
O-shaped rings (36) are arranged at the joint of the bottom plate (9) and the second sliding bearing (15) and the joint of the lower base plate (10) and the first sliding bearing (14);
The O-shaped ring (36) is sleeved on the main shaft (12).
9. The close proximity checker according to claim 1, further comprising a first connecting iron (2), a knuckle bearing (3), a transfer shaft (4), a connecting rod (5), a second connecting iron (6);
One end of the crank arm (11) is connected with one side of the adapter shaft (4) through the joint bearing (3);
the switching shaft (4) is arranged at one end of the connecting rod (5);
The other end of the connecting rod (5) is connected with the second connecting iron (6);
The lower base plate (10) is connected with the first connecting iron (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910743211.7A CN110450818B (en) | 2019-08-13 | 2019-08-13 | Closed rotary type close-fitting inspector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910743211.7A CN110450818B (en) | 2019-08-13 | 2019-08-13 | Closed rotary type close-fitting inspector |
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| CN110450818A CN110450818A (en) | 2019-11-15 |
| CN110450818B true CN110450818B (en) | 2024-06-18 |
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| CN201910743211.7A Active CN110450818B (en) | 2019-08-13 | 2019-08-13 | Closed rotary type close-fitting inspector |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112172867B (en) * | 2020-10-29 | 2024-06-14 | 陕西陕煤韩城矿业有限公司 | Device for protecting switch connecting rod of underground switch |
| CN113815675B (en) * | 2021-09-30 | 2023-05-09 | 太原市京丰铁路电务器材制造有限公司 | Novel switch close-contact detector |
Citations (3)
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| GB615427A (en) * | 1941-04-19 | 1949-01-06 | Fr Des Munitions De Chasse De | Improvements in or relating to apparatus for indicating the proper actuation of railway switch points |
| CN203766822U (en) * | 2014-03-12 | 2014-08-13 | 北京首铁金仑科技发展有限公司 | Closed disc type fitting checker |
| CN210591933U (en) * | 2019-08-13 | 2020-05-22 | 北京全路通信信号研究设计院集团有限公司 | Closed rotary type close-fitting checker |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN200939892Y (en) * | 2006-08-28 | 2007-08-29 | 刘春雷 | Secret adhering sheet checking device |
| CN201065072Y (en) * | 2007-01-31 | 2008-05-28 | 北京中铁通电务技术开发中心 | Close adhering inspector |
| CN104442922A (en) * | 2014-11-21 | 2015-03-25 | 太原市京丰铁路电务器材制造有限公司 | Switch point closure detector |
| KR101852776B1 (en) * | 2017-07-20 | 2018-06-07 | 주식회사 세화 | Point Machine |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB615427A (en) * | 1941-04-19 | 1949-01-06 | Fr Des Munitions De Chasse De | Improvements in or relating to apparatus for indicating the proper actuation of railway switch points |
| CN203766822U (en) * | 2014-03-12 | 2014-08-13 | 北京首铁金仑科技发展有限公司 | Closed disc type fitting checker |
| CN210591933U (en) * | 2019-08-13 | 2020-05-22 | 北京全路通信信号研究设计院集团有限公司 | Closed rotary type close-fitting checker |
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