阅读说明：本技术 一种轨道交通导轨异物检测器 (Track traffic guide rail foreign matter detector ) 是由 史建凯 于 2020-05-14 设计创作，主要内容包括：本发明涉及轨道交通技术领域,且公开了一种轨道交通导轨异物检测器,通过外壳Ⅰ内腔的顶部焊接有吸附盘,吸附盘底部位于外侧的位置上固定套接有吸附片主动齿条的一侧啮合有主体结构,从而使直流发电机发电并产生电流,通过直流发电机的输出端与导轨信号连接降电流传输至铁轨。通过检测发送装置的输入端与导轨信号连接,其他位置多个相同装置中的检测发送装置会接收到铁轨传导过来的电流并检测出电流强度,通过人工对电流递减值和梯度变化可以了解到铁路状态是否正常,并且对于电流值出现异常的梯度可以推算出险情的大致距离,可提前进行制动,避免出现火车无法提前预知导致火车刹车不及导致脱轨的事故,提高了铁路运输的安全性。(The invention relates to the technical field of rail transit, and discloses a rail transit guide rail foreign matter detector. The input end of the detection and transmission device is in signal connection with the guide rail, the detection and transmission devices in a plurality of same devices at other positions can receive the current conducted by the rail and detect the current intensity, whether the railway state is normal or not can be known through the current decrement value and the gradient change manually, the approximate distance of a dangerous case can be calculated for the gradient with abnormal current value, the train can be braked in advance, the accident that the train is not braked in time and derailment is caused due to the fact that the train cannot be predicted in advance is avoided, and the safety of railway transportation is improved.)

1. The utility model provides a track traffic guide rail foreign matter detector, includes I (1) of shell and II (2) of shell, its characterized in that: the top welding of shell I (1) inner chamber has adsorption disc (3), fixed cover has been connect adsorption sheet (4) in the position that adsorption disc (3) bottom is located the outside, the quantity of adsorption sheet (4) is four and uses the ring type permutation to distribute in adsorption disc (3) bottom, the bottom inclined plane department fixed mounting of adsorption disc (3) has pressure difference container (5), piston rod (6) have been cup jointed in the activity on the position that adsorption disc (3) bottom is located the center, the top fixed mounting of piston rod (6) has contact block (7), fixed mounting has seal baffle (8) on the position that the piston rod (6) outside is close to the bottom, the surface of seal baffle (8) and the inner wall of pressure difference container (5) laminate each other, the bottom fixed mounting of piston rod (6) has initiative rack (9), the bottom fixed mounting of seal baffle (8) has initiative rack (9), one side meshing of initiative rack (9) has major structure (10), fixed mounting has detection transmitting device (11) in the cabin at shell II (2) top, fixed mounting has reset spring (12) on the position that the top of sealed baffle (8) is located piston rod (6) outside, reset spring (12) extend to the bottom of adsorbing dish (3) always.

2. The rail transit guide foreign object detector according to claim 1, wherein: major structure (10) are including back shaft (101), back shaft (101) fixed mounting is in the both sides of shell II (2) inner wall, connecting rod (102) have been cup jointed in the activity on the position that is close to both ends in back shaft (101) outside, the one end fixed mounting of connecting rod (102) has spring card (103), one side fixed mounting of connecting rod (102) has extension spring (104), the one end fixed mounting of extension spring (104) has bottom plate (105), bottom plate (105) fixed mounting is in the bottom of shell II (2), power generation facility (106) have been cup jointed in the one end activity of spring card (103), spring card (103) and power generation facility (106) joint.

3. The rail transit guide foreign object detector according to claim 2, wherein: generating set (106) include transmission shaft (1061), the one end fixed mounting of transmission shaft (1061) has ratchet (1062), ratchet (1062) and spring card (103) joint, transmission gear (1063) have been cup jointed to the external surface fixing of transmission shaft (1061), transmission gear (1063) and initiative rack (9) intermeshing, the other end fixed mounting of transmission shaft (1061) has dc generator (1064), dc generator (1064) one end activity is cup jointed in the inside of connecting rod (102).

4. The rail transit guide foreign object detector according to claim 1, wherein: pressure difference container (5) are including interior cavity (51), the both sides fixed mounting of interior cavity (51) has outer cavity (52), water conservancy diversion chamber (53) have been seted up to the both sides of interior cavity (51) inner wall, water conservancy diversion chamber (53) communicate with each other with the appearance chamber of sealed bulkhead (8) top and bottom, the one end of water conservancy diversion chamber (53) all is fixed cup joints current limiting block (54).

5. The rail transit guide foreign object detector according to claim 1, wherein: the extension spring (104) is in a stretched state.

6. The rail transit guide foreign object detector as set forth in claim 3, wherein: the included angle alpha between the meshing part of the transmission gear (1063) and the driving rack (9) and the vertical direction is ninety degrees, the tooth thickness is twelve millimeters, and the included angle beta of the tooth socket is forty degrees.

7. The rail transit guide foreign object detector as set forth in claim 3, wherein: the tooth parameters of the driving rack (9) are the same as those of the ratchet wheel (1062).

8. The rail transit guide foreign object detector as set forth in claim 3, wherein: the output end of the direct current generator (1064) is in signal connection with the guide rail.

9. The rail transit guide foreign object detector according to claim 1, wherein: the input end of the detection transmitting device (11) is connected with the guide rail signal.

Technical Field

The invention relates to the technical field of rail transit, in particular to a rail transit guide rail foreign matter detector.

Background

The train is a very common rail vehicle, from 1875 the first railway appears in China to the present, the total mileage of the railway in China has reached 13.9 kilometers and has 2.1 million railway locomotives, with the continuous promotion of railway construction, the railway transportation safety is also the important importance in railway development, because the total mileage of the railway is very huge, and the environment of part of the railway is relatively severe, the situations of collapse, flooding, artificial damage and the like can often occur, if the use and the monitoring are carried out, the cost is huge, the popularization cannot be carried out, and a novel device is needed.

Aiming at the problem, equipment with simple structure and high reliability is needed to detect the state of the guide rail, the material of the railway guide rail is mainly alloy steel, the railway guide rail belongs to a conductive material, and wood below the guide rail belongs to an insulator, so that current can be transmitted along the direction of the guide rail all the time, when the guide rail is collapsed or flooded with water, the resistance value of the guide rail per se is changed, and the intensity of the conducted current is also changed.

Disclosure of Invention

Aiming at the defects of the prior device in the use process, the invention provides the rail transit guide rail foreign matter detector which has the advantages of simple structure, high reliability and low price and solves the problems in the prior art.

The invention provides the following technical scheme: a rail transit guide rail foreign matter detector comprises a shell I and a shell II, wherein an adsorption disc is welded at the top of an inner cavity of the shell I, the bottom of the adsorption disc is fixedly sleeved with four adsorption sheets which are distributed at the bottom of the adsorption disc in an annular array, a pressure difference container is fixedly arranged at the inclined plane of the bottom of the adsorption disc, a piston rod is movably sleeved at the position of the center of the bottom of the adsorption disc, the top of the piston rod is fixedly provided with a contact block, the position of the outer side of the piston rod close to the bottom is fixedly provided with a sealing clapboard, the outer surface of the sealing clapboard is mutually attached to the inner wall of the pressure difference container, the bottom of the piston rod is fixedly provided with a driving rack, the bottom of the sealing partition plate is fixedly provided with a driving rack, and one side of the driving rack is meshed with a main body structure.

Preferably, the major structure includes the back shaft, back shaft fixed mounting is in the both sides of II inner walls of shell, the connecting rod has been cup jointed in the activity on the position that the back shaft outside is close to both ends, the one end fixed mounting of connecting rod has the spring card, one side fixed mounting of connecting rod has extension spring, extension spring's one end fixed mounting has the bottom plate, bottom plate fixed mounting is in the bottom of shell II, power generation facility has been cup jointed in the one end activity of spring card, spring card and power generation facility joint.

Preferably, power generation facility includes the transmission shaft, the one end fixed mounting of transmission shaft has the ratchet, ratchet and spring card joint, the fixed cover of surface of transmission shaft has connect drive gear, drive gear and initiative rack intermeshing, the other end fixed mounting of transmission shaft has direct current generator, direct current generator one end activity cup joints the inside at the connecting rod.

Preferably, the pressure difference container comprises an inner cavity, outer cavities are fixedly mounted on two sides of the inner cavity, flow guide cavities are formed in two sides of the inner wall of the inner cavity, the flow guide cavities communicate the top and bottom cavities of the sealing partition plate, and a flow limiting block is fixedly sleeved at one end of each flow guide cavity.

Preferably, the extension spring is in a stretched state.

Preferably, the included angle alpha between the meshing position of the transmission gear and the driving rack and the vertical direction is ninety degrees, the tooth thickness is twelve millimeters, and the included angle beta of the tooth socket is forty degrees.

Preferably, the tooth parameters of the driving rack are the same as those of the ratchet wheel.

Preferably, the output end of the direct current generator is in signal connection with the guide rail.

Preferably, the input end of the detection transmitting device is connected with the guide rail signal.

The invention has the following beneficial effects:

1. the invention is characterized in that a contact block is fixedly arranged at the top of a piston rod, an active rack is fixedly arranged at the bottom of the piston rod, the active rack is fixedly arranged at the bottom of a sealing partition plate, when a train runs, the contact block moves downwards due to the weight of wheels to drive the active rack, a main body structure is meshed at one side of the active rack to drive a transmission gear to rotate, so that a direct-current generator generates electricity and generates current, the output end of the direct-current generator is connected with a guide rail signal to reduce the current and transmit the current to a rail, meanwhile, the input end of a detection and transmission device is connected with the guide rail signal, detection and transmission devices in a plurality of same devices at other positions receive the current transmitted by the rail and detect the current intensity, whether the railway state is normal or not can be known through the reduction value and the gradient change of the current manually, and the approximate distance of the situation can be calculated for the abnormal gradient, the train can be braked in advance, so that the accident that the train is not braked in time to cause derailment due to the fact that the train cannot be predicted in advance is avoided, and the safety of railway transportation is improved.

2. The invention is characterized in that a sealing clapboard is fixedly arranged at the position close to the bottom outside the piston rod, the outer surface of the sealing clapboard is mutually attached to the inner wall of the pressure difference container, so that the sealing clapboard divides the interior of the pressure difference container into two containing cavities, when the piston rod moves downwards to drive the sealing clapboard to move downwards, the pressure of the containing cavity below the sealing clapboard is increased, the pressure of the containing cavity above the sealing clapboard is reduced, and the adsorption sheet prevents gas from rapidly entering the containing cavity of the sealing clapboard, so that the containing cavities at the two sides of the sealing clapboard can form stable pressure difference, meanwhile, the adsorption force of the contact block pressed in the adsorption disc is balanced with the elastic force of the reset spring through the adsorption action of the adsorption sheet, so that the contact block cannot be rapidly reset, the contact block is prevented from being pressed and restored for many times to cause the reduction of the service life of the device due to the sequential order of train carriages, and the error caused by the mutual, on the other hand, the cavities at the top and the bottom of the sealing partition plate are communicated through the flow guide cavity, and the flow limiting block is fixedly sleeved at one end of the flow guide cavity, so that the pressure difference at two sides of the sealing partition plate can be slowly balanced with each other, and finally, the adsorption force borne by the adsorption piece is smaller than the elastic force of the reset spring to the adsorption piece, so that the contact piece is reset.

3. According to the invention, the ratchet wheel is clamped with the spring clamping piece, so that the contact block is reset to drive the driving rack to move upwards, the transmission shaft cannot rotate, the transmission gear cannot rotate, and the direct-current generator cannot generate current, so that the device cannot generate current when being reset, the interference of the current generated when being reset on the detection of the detection and sending device is avoided, and the working accuracy of the device is improved.

4. According to the invention, the included angle alpha between the meshing position of the transmission gear and the driving rack and the vertical direction is ninety degrees, so that the meshing force between the transmission gear and the driving rack is in the vertical direction when the driving rack moves downwards, the transmission gear is ensured not to be bounced by horizontal component force when the driving rack moves downwards, the problem that the device cannot generate stable current when being triggered is avoided, the stability of the device is improved, meanwhile, the driving rack can be ensured to be stably meshed with the transmission gear when moving downwards through the stretching spring in the stretched state, on the other hand, the tooth space included angle beta is forty degrees, the tooth parameter of the driving rack is the same as that of the ratchet wheel, when the driving rack moves upwards due to resetting, the effective meshing force between the driving rack and the ratchet wheel is smaller, and the clamping force between the ratchet wheel and a spring card is smaller, the service life of the ratchet wheel and the spring clamping piece is prolonged.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the structure of the present invention;

FIG. 3 is a schematic view of a structural pressure differential vessel of the present invention;

FIG. 4 is a schematic structural diagram of the main body of the present invention;

FIG. 5 is a schematic view of the connection between the ratchet and the spring clip according to the present invention;

FIG. 6 is an enlarged view of the point A in FIG. 5;

FIG. 7 is a schematic view of the connection of the drive gear and the driving rack of the present invention;

FIG. 8 is an enlarged view of the point B in FIG. 7 according to the present invention.

In the figure: 1. a shell I; 2. a shell II; 3. an adsorption tray; 4. an adsorption sheet; 5. a pressure differential vessel; 51. an inner cavity; 52. an outer cavity; 53. a flow guide cavity; 54. a flow limiting block; 6. a piston rod; 7. a contact block; 8. sealing the partition plate; 9. a driving rack; 10. a body structure; 101. a support shaft; 102. a connecting rod; 103. a spring clip; 104. an extension spring; 105. a base plate; 106. a power generation device; 1061. a drive shaft; 1062. a ratchet wheel; 1063. a transmission gear; 1064. a DC generator; 11. detecting a transmitting device; 12. a return spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, a rail transit guide rail foreign matter detector comprises a shell i 1 and a shell ii 2, wherein an adsorption disc 3 is welded at the top of an inner cavity of the shell i 1, an adsorption sheet 4 is fixedly sleeved at a position, located at the outer side, of the bottom of the adsorption disc 3, the four adsorption sheets 4 are distributed at the bottom of the adsorption disc 3 in an annular array manner, a pressure difference container 5 is fixedly installed at an inclined plane at the bottom of the adsorption disc 3, the pressure difference container 5 comprises an inner cavity 51, outer cavities 52 are fixedly installed at two sides of the inner cavity 51, flow guide cavities 53 are formed at two sides of the inner wall of the inner cavity 51, a flow limiting block 54 is fixedly sleeved at one end of each flow guide cavity 53, a piston rod 6 is movably sleeved at a position, located at the center, of the bottom of the adsorption disc 3, a contact block 7 is fixedly installed at the top of the piston rod 6, a sealing partition 8 is fixedly installed at a position, located at, the outer surface of the sealing partition plate 8 is attached to the inner wall of the pressure difference container 5, the bottom of the piston rod 6 is fixedly provided with a driving rack 9, the bottom of the sealing partition plate 8 is fixedly provided with the driving rack 9, one side of the driving rack 9 is meshed with a main body structure 10, the main body structure 10 comprises a supporting shaft 101, the supporting shaft 101 is fixedly arranged on two sides of the inner wall of the shell II 2, the outer side of the supporting shaft 101 is movably sleeved with a connecting rod 102 at a position close to two ends, one end of the connecting rod 102 is fixedly provided with a spring clamping piece 103, one side of the connecting rod 102 is fixedly provided with an extension spring 104, one end of the extension spring 104 is fixedly provided with a bottom plate 105, the extension spring 104 is in a stretched state, the bottom plate 105 is fixedly arranged at the bottom of the shell II 2, one end of the spring clamping piece 103 is movably sleeved, the ratchet 1062 is clamped with the spring card 103, a transmission gear 1063 is fixedly sleeved on the outer surface of the transmission shaft 1061, the transmission gear 1063 is meshed with the driving rack 9, an included angle alpha between the meshing position of the transmission gear 1063 and the driving rack 9 and the vertical direction is ninety degrees, the tooth thickness is twelve millimeters, an included angle beta between tooth sockets is forty degrees, the tooth parameters of the driving rack 9 are the same as those of the ratchet 1062, a direct-current generator 1064 is fixedly installed at the other end of the transmission shaft 1061, the output end of the direct-current generator 1064 is in signal connection with the guide rail, one end of the direct-current generator 1064 is movably sleeved inside the connecting rod 102, the spring card 103 is clamped with the generating device 106, a detection and sending device 11 is fixedly installed in a cabin at the top of the housing II 2, the input end of the detection and sending device 11 is in signal connection with the guide rail, a return spring 12 is fixedly installed at a position, where.

Wherein, a contact block 7 is fixedly arranged on the top of a piston rod 6, an active rack 9 is fixedly arranged on the bottom of the piston rod 6, an active rack 9 is fixedly arranged on the bottom of a sealing clapboard 8, when a train runs, the weight of wheels can make the contact block 7 move downwards to drive the active rack 9, a main structure 10 is meshed on one side of the active rack 9 to drive a transmission gear 1063 to rotate, so that a direct current generator 1064 generates electricity and generates current, the current is transmitted to a rail by the signal connection of the output end of the direct current generator 1064 and the rail, meanwhile, the input end of a detection transmitting device 11 is in signal connection with the rail, the detection transmitting devices 11 in a plurality of same devices at other positions can receive the current transmitted by the rail and detect the current intensity, and the condition of the railway can be known whether the railway is normal or not by the gradual current reduction and the gradient change manually, and the approximate distance of dangerous cases can be calculated for the gradient with abnormal current value, the braking can be carried out in advance, the accident that the train brake is not timely caused by the train being incapable of being predicted in advance and the derailment is caused is avoided, and the safety of railway transportation is improved.

Wherein, a sealing clapboard 8 is fixedly arranged at the position which is close to the bottom outside the piston rod 6, the outer surface of the sealing clapboard 8 is mutually attached to the inner wall of the pressure difference container 5, so that the sealing clapboard 8 divides the inside of the pressure difference container 5 into two containing cavities, when the piston rod 6 moves downwards to drive the sealing clapboard 8 to move downwards, the pressure of the containing cavity below the sealing clapboard 8 is increased, the pressure of the containing cavity above is reduced, and the adsorption sheet 4 prevents gas from rapidly entering the containing cavity of the sealing clapboard 8, so that the containing cavities at both sides of the sealing clapboard 8 can form stable pressure difference, and simultaneously, the adsorption force borne by the contact block 7 pressed into the adsorption disc 3 is balanced with the elastic force borne by the reset spring 12 through the adsorption action of the adsorption sheet 4, so that the contact block 7 cannot be reset rapidly, thereby avoiding that the service life of the device is reduced due to the contact block 7 being pressed and restored for many times as, meanwhile, the main structure 10 is prevented from being triggered for multiple times, so that multiple currents are easily interfered with each other to cause errors, on the other hand, the top and bottom accommodating cavities of the sealing partition plate 8 are communicated through the flow guide cavity 53, the flow limiting block 54 is fixedly sleeved at one end of the flow guide cavity 53, the pressure difference of the two sides of the sealing partition plate 8 can be slowly balanced with each other, finally, the adsorption force borne by the adsorption piece 4 is smaller than the elastic force of the reset spring 12 on the adsorption piece, the contact block 7 is reset, and the flow limiting block 54 is a member with a damping hole formed in the middle.

Wherein, through ratchet 1062 and spring card 103 joint, when making contact piece 7 reset and drive initiative rack 9 and upwards remove, thereby transmission shaft 1061 can't rotate and make drive gear 1063 can't rotate and then DC generator 1064 can't produce electric current for unable production of electric current when the device resets, the production of electric current when having avoided resetting disturbs the detection that detects transmitting device 11, has improved the accuracy of the device work.

Wherein, an included angle alpha between the meshing position of the transmission gear 1063 and the driving rack 9 and the vertical direction is ninety degrees, so that the meshing force between the transmission gear 1063 and the driving rack 9 is in the vertical direction when the driving rack 9 moves downwards, the transmission gear 1063 is ensured not to be bounced off by horizontal component force when the driving rack 9 moves downwards, the problem that the device cannot generate stable current when being triggered is avoided, the stability of the device is improved, meanwhile, the driving rack 9 can be ensured to be stably meshed with the transmission gear 1063 when moving downwards by the stretching spring 104 being in the stretched state, on the other hand, the tooth space included angle beta is forty degrees, the tooth parameters of the driving rack 9 are the same as those of the ratchet 1062, when the driving rack 9 moves upwards due to resetting, the effective meshing force between the driving rack 9 and the ratchet 2 is smaller, so that the clamping force between the ratchet 1062 and the spring card 103 is smaller, the service life of the ratchet 1062 and the spring clip 103 is improved.

The using method of the invention is as follows:

when a train passes through, the wheels make the contact block 7 move downwards and drive the sealing partition plate 8 to move downwards, so that the volume of the cavity above the sealing partition plate 8 is increased, the pressure is reduced, air cannot rapidly enter the cavity above the sealing partition plate 8 in the process that the contact block 7 is pressed down by the adsorption sheet 4, so that the contact block 7 is adsorbed in the adsorption disc 3 and cannot be rapidly reset, meanwhile, the volume of the cavity below the sealing partition plate 8 is reduced and the pressure is increased by the downward movement of the sealing partition plate 8, the gas in the cavity cannot rapidly enter the flow guide cavity 53 by the flow limiting block 54, the driving rack 9 is driven to synchronously move downwards in the process that the contact block 7 is pressed down, the spring clamping sheet 103 is driven to rotate, so that the direct current generator 1064 can generate electricity, the sent current is transmitted to the guide rail, the current is transmitted along the guide rail and is received by the detection sending device 11 in other same devices and sent out at the same time when the measured current value is sent out, whether the track state is normal or not is deduced through the change of the current value, after the whole train runs through the device, the air pressure in the containing cavities at two sides of the sealing partition plate 8 slowly tends to be balanced through the flow guide cavity 53, so that the adsorption force of the adsorption piece 4 on the contact block 7 is smaller than the elastic force of the reset spring 12, and the contact block 7 is finally reset.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.