CN214372413U

CN214372413U - Railway gravity balance type ultrahigh detection device

Info

Publication number: CN214372413U
Application number: CN202120197856.8U
Authority: CN
Inventors: 王翔; 左小伟; 余金江; 宋旭; 余高银; 王勇
Original assignee: China Railway 11th Bureau Group Co Ltd; Fourth Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
Current assignee: China Railway 11th Bureau Group Co Ltd; Fourth Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2021-10-08
Anticipated expiration: 2031-01-25

Abstract

The utility model provides a railway gravity balance formula superelevation detection device, is including detecting the car, detects the car and can move on the track, and the position that the top left side of detecting the car is located directly over the left side track is provided with first superelevation and detects the prism, and the position that the top right side of detecting the car is located directly over the right side track is provided with the second superelevation and detects the prism, and the central point that is located between first superelevation detection prism and the second superelevation detection prism on detecting the car puts and is provided with the superelevation detector. This design not only improves and detects the continuity, reduces the labour, improves work efficiency moreover.

Description

Railway gravity balance type ultrahigh detection device

Technical Field

The utility model relates to a railway track detects technical field, especially relates to a railway gravity balance type superelevation detection device, mainly is applicable to and improves the detection continuity, reduces intensity of labour and improves work efficiency.

Background

The railway line is an important component of a national rapid passenger transport network, the development and construction of the railway line can improve the transport capacity and the transport quality of a railway channel, and the railway line has profound significance for meeting the requirements of national economy and social development, the superelevation means that when a train runs on a circular curve, the train slides under the action of transverse force or centrifugal force, in order to offset the centrifugal force generated when the train runs on the circular curve section, the train can safely, stably and comfortably pass through the circular curve at the designed speed and economy, and the outer side of the section is higher than the inner side of a one-way transverse slope.

The utility model discloses a chinese patent, the publication number of authorizing is CN203148352U, the publication date of authorizing is 2013 08 month 21 day, a railway gaging rule calibrator is proposed, wherein, this railway gaging rule calibrator adopts gauge special block gauge and superelevation special block gauge to realize the location of check point, very simple, convenient, when simplifying the measurement performance test process to the gaging rule, ensure the measurement performance of gaging rule, provide the assurance for the reliability of railway maintenance and inspection work; in the process of measuring the gauge indicating value error, a motor is adopted to complete the telescopic adjustment of the rotating shaft; the labor difficulty of workers is greatly reduced, but the following defects still exist: the detection continuity degree is low, only breakpoint measurement can be carried out, the labor intensity is high, frequent stooping is needed during use, fatigue is easy to generate, and the working efficiency is low.

Disclosure of Invention

The utility model aims at overcoming the defect and the problem that the detection continuity degree that exists is low among the prior art, intensity of labour is big and work efficiency is low, providing an improve the railway gravity balance type superelevation detection device who detects the continuity, reduce intensity of labour and improve work efficiency.

In order to achieve the above purpose, the technical solution of the utility model is that: a railway gravity balance type ultrahigh detection device comprises a detection vehicle, wherein the detection vehicle can move on a track, a first ultrahigh detection prism is arranged at the position, located right above a left side track, of the left side of the top of the detection vehicle, a second ultrahigh detection prism is arranged at the position, located right above a right side track, of the right side of the top of the detection vehicle, and an ultrahigh detector is arranged at the central position, located between the first ultrahigh detection prism and the second ultrahigh detection prism, of the detection vehicle;

the ultrahigh detector comprises a gearbox supporting plate, a gearbox, a balance block, a turntable and a pointer, wherein the bottom of the gearbox supporting plate is connected with a detection vehicle, the gearbox is arranged on the back of the gearbox supporting plate, the balance block is arranged on the back of the gearbox, and the turntable is arranged on the front of the gearbox supporting plate;

the inside of gearbox is provided with first connecting axle, second connecting axle and third connecting axle, the one end of first connecting axle is passed the gearbox and is connected with the balancing piece, the other end and the gearbox of first connecting axle are connected, the cover is equipped with first gear on the outer wall of first connecting axle, the both ends of second connecting axle all are connected with the gearbox, the cover is equipped with second gear and third gear on the outer wall of second connecting axle, the second gear meshes with first gear mutually, the one end of third connecting axle is passed the gearbox and is connected with the pointer, the other end and the gearbox of third connecting axle are connected, the cover is equipped with the fourth gear with third gear mutually meshing on the outer wall of third connecting axle.

The gearbox comprises a gearbox cover plate, a gearbox side plate and a gearbox back plate, the gearbox cover plate is connected with the top of the gearbox support plate, the gearbox side plate and the gearbox back plate are both arranged at the bottom of the gearbox cover plate, the gearbox side plate is located between the gearbox support plate and the gearbox back plate, and the bottom of the gearbox side plate is provided with a gearbox bottom plate.

The balancing piece is two kidney forms, the balancing piece includes left kidney board, right kidney board and connecting plate, the left and right sides of connecting plate is connected with left kidney board, right kidney board respectively, the connecting plate is connected with first connecting axle, all be provided with horizontal bubble on left side kidney board, the right kidney board.

The gear ratio of the first gear to the second gear is 100: 20, and the gear ratio of the third gear to the fourth gear is 106: 20.

The outer walls of the first connecting shaft, the second connecting shaft and the third connecting shaft are provided with two bearings, and the bearings are connected with the inner wall of the gearbox.

The carousel includes dial plate cover and calibrated scale, the interior wall connection of calibrated scale and dial plate cover, be provided with transparent protection casing on the dial plate cover.

The left and right sides of gearbox backup pad all is provided with the screw hole, threaded hole has set gradually ripples pearl set screw, adjusting bolt, the one end and the adjusting bolt of ripples pearl set screw are connected, be provided with the spacing groove along the circumferencial direction on the outer wall of dial cover, the other end of ripples pearl set screw is located the spacing inslot.

The gearbox supporting plate is provided with a mounting groove, and the rotary disc is inserted in the mounting groove.

The bottom of detecting the car is provided with the walking wheel, walking wheel and track looks adaptation, the top of detecting the car is provided with the pushing hands.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model relates to a detection vehicle and an ultrahigh detector arranged in a railway gravity balance type ultrahigh detection device, when detecting a curve section track, the detection vehicle is placed on the track, the rail surface elevations of a left rail and a right rail are detected through a first ultrahigh detection prism and a second ultrahigh detection prism, then a rotary disc is manually rotated to complete calibration operation, then the detection vehicle is pushed to detect the curve section track, if the rail surface altitudes of the left rail and the right rail are changed in the moving process of the detection vehicle, a balance weight can be always kept horizontal under the action of gravity, the rotary disc rotates leftwards or rightwards along with the detection vehicle to further drive a first connecting shaft to rotate, a first gear drives a second gear to rotate, a second connecting shaft drives a third gear to rotate, then a fourth gear meshed with the third gear rotates, the third connecting shaft can drive a pointer to rotate in the rotary disc, the measured value is read out, so that the measurement operation is completed, the detection vehicle can drive the ultrahigh detector to move, the curve section track can be continuously detected, the detection continuity is improved, and the calibration can be carried out during measurement, so that the measurement result is more accurate, and the accuracy of the measurement result is improved.

Therefore, the utility model provides the high detection continuity with improve the accuracy.

2. The utility model relates to a be provided with among railway gravity balance type superelevation detection device and detect the car, the bottom of detecting the car is provided with the walking wheel, walking wheel and track looks adaptation, the top of detecting the car is provided with the pushing hands, when measuring, only need hold the pushing hands and promote detection car, detect the super elevation detector on the car and can accomplish and detect the curve section track, whole process does not need to bow many times, makes through the walking wheel of detecting on the car and reduces a large amount of labours, need not to bow many times, walking wheel and pushing hands greatly reduced the labour on the detection car, also reduced the cost of labor simultaneously, the detection cost also obtains reducing.

Therefore, the utility model discloses the labour has been reduced and the detection cost is reduced.

3. The utility model relates to a detection vehicle and an ultrahigh detector arranged in a railway gravity balance type ultrahigh detection device, which can continuously detect a curve section track, thereby reducing the time required by detection, improving the detection efficiency, being more efficient when in use, reducing the labor force through a walking wheel and a pushing hand, further improving the detection efficiency of the detection device, reducing the time required by detection, improving the working efficiency of detection personnel, and the left side and the right side of a gearbox supporting plate are both provided with threaded holes, a bead positioning screw and an adjusting bolt are sequentially arranged in the threaded holes, one end of the bead positioning screw is connected with the adjusting bolt, a limit groove is arranged on the outer wall of a dial sleeve along the circumferential direction, the other end of the bead positioning screw is positioned in the limit groove, when the adjustment and calibration are required, only the dial sleeve needs to be rotated, because a pointer is connected with a connecting rod on the supporting plate, at the in-process of rotating the dial cover, ripples pearl set screw plays spacing effect, and the directional fixed unchangeable of pointer, the calibrated scale that the dial sheathes in rotates to coincide the zero scale of calibrated scale and the direction that the pointer indicates, and then accomplish whole calibration process, whole calibration process is comparatively simple, and the required time is short, reduces the labour of calibration regulation, also improves whole testing process's efficiency simultaneously.

Therefore, the utility model discloses work efficiency is high.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a left side view of the ultra-high detector of fig. 1.

Fig. 3 is an external structural view of the transmission case of fig. 2.

Fig. 4 is a schematic view of the internal structure of the transmission case of fig. 2.

Fig. 5 is a left side view of fig. 4.

Fig. 6 is a front view of the ultra-high detector of fig. 1.

Fig. 7 is a top view of the ultra-high detector of fig. 1.

Fig. 8 is a cross-sectional view of fig. 2.

Fig. 9 is a schematic view of the construction of the dial cover of fig. 7.

In the figure: the detecting vehicle comprises a detecting vehicle 1, a track 2, a first ultrahigh detecting prism 3, a second ultrahigh detecting prism 4, an ultrahigh detector 5, a gearbox supporting plate 51, a threaded hole 511, a bead positioning screw 512, an adjusting bolt 513, a gearbox 52, a first connecting shaft 501, a second connecting shaft 502, a third connecting shaft 503, a first gear 504, a second gear 505, a third gear 506, a fourth gear 507, a gearbox cover plate 521, a gearbox side plate 522, a gearbox back plate 523, a balance weight 53, a horizontal bubble 531, a rotary table 54, a dial cover 541, a dial 542, a transparent protective cover 543, a limiting groove 544, a pointer 55 and a pushing hand 6.

Detailed Description

The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.

Referring to fig. 1 to 9, a railway gravity balance type superelevation detection device comprises a detection vehicle 1, wherein the detection vehicle 1 can move on a track 2, a first superelevation detection prism 3 is arranged at a position, located right above the track 2 on the left side, of the top of the detection vehicle 1, a second superelevation detection prism 4 is arranged at a position, located right above the track 2 on the right side, of the right side of the top of the detection vehicle 1, and a superelevation detector 5 is arranged at a central position, located between the first superelevation detection prism 3 and the second superelevation detection prism 4, on the detection vehicle 1;

the ultrahigh detector 5 comprises a gearbox supporting plate 51 (cut by adopting a 6061 aluminum plate with the thickness of 16 mm), a gearbox 52, a balance block 53, a turntable 54 and a pointer 55, wherein the bottom of the gearbox supporting plate 51 is connected with the detection vehicle 1, the gearbox 52 is arranged on the back of the gearbox supporting plate 51, the balance block 53 is arranged on the back of the gearbox 52, and the turntable 54 is arranged on the front of the gearbox supporting plate 51;

a first connecting shaft 501, a second connecting shaft 502 and a third connecting shaft 503 are arranged in the gearbox 52, one end of the first connecting shaft 501 passes through the gear box 52 and then is connected with the balance weight 53, the other end of the first connecting shaft 501 is connected with the gear box 52, a first gear 504 is sleeved on the outer wall of the first connecting shaft 501, both ends of the second connecting shaft 502 are connected with the gear box 52, a second gear 505 and a third gear 506 are sleeved on the outer wall of the second connecting shaft 502, the second gear 505 is meshed with the first gear 504, one end of the third connecting shaft 503 passes through the gear box 52 and is connected with the pointer 55, the other end of the third connecting shaft 503 is connected with the gear box 52, a fourth gear 507 engaged with the third gear 506 is sleeved on the outer wall of the third connecting shaft 503, the first gear 504, the second gear 505, the third gear 506 and the fourth gear 507 are all made of No. 45 medium carbon steel.

The gearbox 52 comprises a gearbox cover plate 521, a gearbox side plate 522 and a gearbox back plate 523, the gearbox cover plate 521 is connected with the top of the gearbox support plate 51, the gearbox side plate 522 and the gearbox back plate 523 are both arranged at the bottom of the gearbox cover plate 521, the gearbox side plate 522 is located between the gearbox support plate 51 and the gearbox back plate 523, and the bottom of the gearbox side plate 522 is provided with a gearbox bottom plate.

Balance weight 53 is two kidney forms, balance weight 53 includes left kidney board, right kidney board and connecting plate, the left and right sides of connecting plate is connected with left kidney board, right kidney board respectively, the connecting plate is connected with first connecting axle 501, all be provided with horizontal bubble 531 on left kidney board, the right kidney board.

The gear ratio of the first gear 504 to the second gear 505 is 100: 20, and the gear ratio of the third gear 506 to the fourth gear 507 is 106: 20.

The outer walls of the first connecting shaft 501, the second connecting shaft 502 and the third connecting shaft 503 are provided with two bearings, and the bearings are connected with the inner wall of the gearbox 52.

Carousel 54 includes dial cover 541 and dial 542, dial 542 and dial cover 541's inner wall connection, be provided with transparent protection casing 543 on the dial cover 541, dial 542 adopts the reverse full circle number sign of forward (360 degrees are annotated to forward rotation promptly, 360 degrees are annotated to reverse rotation), dial cover 541 bonds through the super glue with dial 542.

The left and right sides of gearbox backup pad 51 all is provided with screw hole 511, wave pearl set screw 512, adjusting bolt 513 have set gradually in screw hole 511, the one end and the adjusting bolt 513 of wave pearl set screw 512 are connected, be provided with spacing groove 544 along the circumferencial direction on the outer wall of dial cover 541, the other end of wave pearl set screw 512 is located spacing groove 544.

The gearbox supporting plate 51 is provided with an installation groove, and the rotating disc 54 is inserted in the installation groove.

The bottom of detecting car 1 is provided with the walking wheel, walking wheel and track 2 looks adaptation, the top of detecting car 1 is provided with pushing hands 6.

The principle of the utility model is explained as follows:

the railway track superelevation value is generally between 0 and 150 millimeters, corresponds to horizontal distance 1505 millimeters (standard gauge 1435+ rail width 70), and when the detection car passes through a curve segment, the raising of the outer rail can cause the car body to transversely rotate by an angle, and the tangent formula tana is the superelevation value/rail center distance 1505, and the calculated angle value is small, so the reaction is insensitive, and in order to directly adopt a standard 360-degree dial according to 1: 1, displaying the ultrahigh value (the pointer is equal to one millimeter in the distance direction, namely the ultrahigh value is 1 millimeter every time the pointer rotates once), carrying out numerical amplification through a left balance block, a right balance block and a gearbox, firstly carrying out simulation calculation, drawing a straight line with the length of 1505 millimeters, drawing a straight line with the angle of 1 degree and the length of 1505 millimeters along one end of the straight line, marking the width of an opening to be 26.27 millimeters, and finally carrying out calculation verification through a calculator to verify that tan1 is the ultrahigh value/1505, and the calculated ultrahigh value is also 26.27 millimeters, so that the corresponding ultrahigh value is 26.27 millimeters when the vehicle body rotates 1 degree, and the two-stage gearbox is designed by taking the width as the reference, the two-stage gear ratios are respectively 20:100 and 20:105.08, the final acceleration ratio is 1:26.5 in consideration of power loss and convenience of gear processing, and the corresponding tooth number is 20:100 and 20:106, so that when the vehicle passes through a curve section, the vehicle body rotates left and right, the balance block always keeps a horizontal state, the turntable is driven to rotate clockwise or anticlockwise along with the detection vehicle through the rotation of the detection vehicle, the pointer also rotates with acceleration through the gearbox, and the angle value is converted into a millimeter value through the gearbox, so that the purpose of displaying an actual ultrahigh value is realized, because the ultrahigh detector is designed according to the standard track gauge 1435 millimeter, when a wide track or a narrow track is adopted, the acceleration ratio needs to be recalculated and is matched again with the acceleration ratio, the calculation principle is the same, because the ultrahigh detector is detachable, the ultrahigh detector needs to be calibrated before each use, the calibration method is that a prism group on a nylon wheel is utilized to firstly measure the right track surface elevation of the same mileage, then the vehicle body is rotated 180 degrees to measure the left track surface elevation, the elevation difference between the two track surfaces is the ultrahigh value, and the dial of the detector can rotate at will 360 degrees, therefore, the balance block is kept horizontal, and the dial is rotated to the ultrahigh value indicated by the pointer. For convenient reading, make the 0 scale of pointer directly down or directly over during the adjustment, because the superelevation detector reaction is too sensitive, a little activity influence can enlarge 26.27 times through the gearbox, the internal frictional resistance of gearbox in the use, the balancing piece windward side is great, produce unfavorable factors such as vibrations when walking, probably arouse balancing piece self-balancing reset error and lead to showing numerical value inaccurate, therefore whether horizontal bubble on the balancing piece is central when paying attention to at every reading, if manual rotation balancing piece in the middle, the bubble is central just can accurate reading, because the calibrated scale is two-way 360 degrees demonstration, should follow the pointer direction of rotation reading during the reading, (generally the super high pointer of left side anticlockwise rotates, the super high pointer of right side clockwise rotation).

Example 1:

referring to fig. 1 to 9, a railway gravity balance type superelevation detection device comprises a detection vehicle 1, wherein the detection vehicle 1 can move on a track 2, a first superelevation detection prism 3 is arranged at a position, located right above the track 2 on the left side, of the top of the detection vehicle 1, a second superelevation detection prism 4 is arranged at a position, located right above the track 2 on the right side, of the right side of the top of the detection vehicle 1, and a superelevation detector 5 is arranged at a central position, located between the first superelevation detection prism 3 and the second superelevation detection prism 4, on the detection vehicle 1; the ultrahigh detector 5 comprises a gearbox supporting plate 51, a gearbox 52, a balance block 53, a turntable 54 and a pointer 55, wherein the bottom of the gearbox supporting plate 51 is connected with the detection vehicle 1, the gearbox 52 is arranged on the back of the gearbox supporting plate 51, the balance block 53 is arranged on the back of the gearbox 52, and the turntable 54 is arranged on the front of the gearbox supporting plate 51; a first connecting shaft 501, a second connecting shaft 502 and a third connecting shaft 503 are arranged inside the gearbox 52, one end of the first connecting shaft 501 penetrates through the gearbox 52 and then is connected with the balance block 53, the other end of the first connecting shaft 501 is connected with the gearbox 52, a first gear 504 is sleeved on the outer wall of the first connecting shaft 501, two ends of the second connecting shaft 502 are both connected with the gearbox 52, a second gear 505 and a third gear 506 are sleeved on the outer wall of the second connecting shaft 502, the second gear 505 is meshed with the first gear 504, one end of the third connecting shaft 503 penetrates through the gearbox 52 and then is connected with the pointer 55, the other end of the third connecting shaft 503 is connected with the gearbox 52, and a fourth gear 507 meshed with the third gear 506 is sleeved on the outer wall of the third connecting shaft 503.

According to the scheme, the use method of the railway gravity balance type ultrahigh detection device comprises the following steps: firstly, placing a detection vehicle 1 on a track 2, then respectively measuring the rail surface elevations of a left rail and a right rail by utilizing a first ultrahigh detection prism 3 and a second ultrahigh detection prism 4, wherein the elevation difference of the two rail surfaces is the ultrahigh range, and then manually rotating a turntable 54 to enable a pointer 55 to point to a corresponding scale value so as to finish the calibration process; the detection vehicle 1 is pushed to detect the track 2, in the moving process of the detection vehicle 1, if the rail surface super-height of the left rail and the right rail changes, the balance weight 53 is always kept horizontal under the action of gravity, the turntable 54 rotates leftwards or rightwards along with the detection vehicle 1, and then the first connecting shaft 501 is driven to rotate, the first gear 504 drives the second gear 505 to rotate, the second connecting shaft 502 drives the third gear 506 to rotate, then the fourth gear 507 meshed with the third gear 506 rotates, and the third connecting shaft 503 drives the pointer 55 to rotate in the turntable 54; then, the scale pointed by the pointer 55 when it is still is read as the actual super-high value, and the measurement of the track 2 is completed.

Example 2:

the basic contents are the same as example 1, except that:

referring to fig. 1 to 9, the transmission 52 includes a transmission cover plate 521, a transmission side plate 522 and a transmission back plate 523, the transmission cover plate 521 is connected to the top of the transmission support plate 51, the transmission side plate 522 and the transmission back plate 523 are both disposed at the bottom of the transmission cover plate 521, the transmission side plate 522 is located between the transmission support plate 51 and the transmission back plate 523, and the transmission bottom plate is disposed at the bottom of the transmission side plate 522; the balance weight 53 is in a double kidney shape, the balance weight 53 comprises a left kidney plate, a right kidney plate and a connecting plate, the left side and the right side of the connecting plate are respectively connected with the left kidney plate and the right kidney plate, the connecting plate is connected with the first connecting shaft 501, and horizontal air bubbles 531 are arranged on the left kidney plate and the right kidney plate; the gear ratio of the first gear 504 to the second gear 505 is 100: 20, and the gear ratio of the third gear 506 to the fourth gear 507 is 106: 20.

Example 3:

the basic contents are the same as example 1, except that:

referring to fig. 1 to 9, two bearings are arranged on the outer walls of the first connecting shaft 501, the second connecting shaft 502 and the third connecting shaft 503, and the bearings are connected with the inner wall of the gearbox 52; the dial 54 comprises a dial cover 541 and a dial 542, the dial 542 is connected with the inner wall of the dial cover 541, and the dial cover 541 is provided with a transparent protective cover 543; threaded holes 511 are formed in the left side and the right side of the gearbox supporting plate 51, wave bead positioning screws 512 and adjusting bolts 513 are sequentially arranged in the threaded holes 511, one ends of the wave bead positioning screws 512 are connected with the adjusting bolts 513, limiting grooves 544 are formed in the outer wall of the dial sleeve 541 along the circumferential direction, and the other ends of the wave bead positioning screws 512 are located in the limiting grooves 544; the gearbox supporting plate 51 is provided with a mounting groove, and the turntable 54 is inserted in the mounting groove; the bottom of detecting car 1 is provided with the walking wheel, walking wheel and track 2 looks adaptation, the top of detecting car 1 is provided with pushing hands 6.

Claims

1. The utility model provides a railway gravity balance formula superelevation detection device which characterized in that: the device comprises a detection vehicle (1), wherein the detection vehicle (1) can move on a track (2), a first ultrahigh detection prism (3) is arranged at the position, located right above the left track (2), on the left side of the top of the detection vehicle (1), a second ultrahigh detection prism (4) is arranged at the position, located right above the right track (2), on the right side of the top of the detection vehicle (1), and an ultrahigh detector (5) is arranged at the central position, located between the first ultrahigh detection prism (3) and the second ultrahigh detection prism (4), on the detection vehicle (1);

the ultrahigh detector (5) comprises a gearbox supporting plate (51), a gearbox (52), a balance block (53), a turntable (54) and a pointer (55), the bottom of the gearbox supporting plate (51) is connected with the detection vehicle (1), the gearbox (52) is arranged on the back of the gearbox supporting plate (51), the balance block (53) is arranged on the back of the gearbox (52), and the turntable (54) is arranged on the front of the gearbox supporting plate (51);

a first connecting shaft (501), a second connecting shaft (502) and a third connecting shaft (503) are arranged inside the gearbox (52), one end of the first connecting shaft (501) penetrates through the gearbox (52) and then is connected with a balance block (53), the other end of the first connecting shaft (501) is connected with the gearbox (52), a first gear (504) is sleeved on the outer wall of the first connecting shaft (501), two ends of the second connecting shaft (502) are connected with the gearbox (52), a second gear (505) and a third gear (506) are sleeved on the outer wall of the second connecting shaft (502), the second gear (505) is meshed with the first gear (504), one end of the third connecting shaft (503) penetrates through the gearbox (52) and then is connected with a pointer (55), the other end of the third connecting shaft (503) is connected with the gearbox (52), and a fourth gear connecting shaft (506) meshed with the third gear (506) is sleeved on the outer wall of the third connecting shaft (503) 507).

2. The railway gravity balance type ultrahigh detection device of claim 1, characterized in that: the gearbox (52) comprises a gearbox cover plate (521), a gearbox side plate (522) and a gearbox back plate (523), the gearbox cover plate (521) is connected with the top of the gearbox support plate (51), the gearbox side plate (522) and the gearbox back plate (523) are both arranged at the bottom of the gearbox cover plate (521), the gearbox side plate (522) is located between the gearbox support plate (51) and the gearbox back plate (523), and the bottom of the gearbox side plate (522) is provided with a gearbox bottom plate.

3. The railway gravity balance type ultrahigh detection device of claim 1, characterized in that: balance weight (53) are two kidney forms, balance weight (53) are including left kidney board, right kidney board and connecting plate, the left and right sides of connecting plate is connected with left kidney board, right kidney board respectively, the connecting plate is connected with first connecting axle (501), all be provided with horizontal bubble (531) on left side kidney board, the right kidney board.

4. The railway gravity balance type ultrahigh detection device of claim 1, characterized in that: the gear ratio of the first gear (504) to the second gear (505) is 100: 20, and the gear ratio of the third gear (506) to the fourth gear (507) is 106: 20.

5. The railway gravity balance type ultrahigh detection device of claim 1, characterized in that: the outer walls of the first connecting shaft (501), the second connecting shaft (502) and the third connecting shaft (503) are provided with two bearings, and the bearings are connected with the inner wall of the gearbox (52).

6. The railway gravity balance type ultrahigh detection device of claim 1, characterized in that: carousel (54) are including dial cover (541) and dial (542), dial (542) are connected with the inner wall of dial cover (541), be provided with transparent protection casing (543) on dial cover (541).

7. The railway gravity balance type ultrahigh detection device of claim 6, wherein: the left and right sides of gearbox backup pad (51) all is provided with screw hole (511), wave pearl set screw (512), adjusting bolt (513) have set gradually in screw hole (511), the one end and the adjusting bolt (513) of wave pearl set screw (512) are connected, be provided with spacing groove (544) along the circumferencial direction on the outer wall of dial cover (541), the other end of wave pearl set screw (512) is located spacing groove (544).

8. The railway gravity balance type ultrahigh detection device of claim 1, characterized in that: the gearbox supporting plate (51) is provided with an installation groove, and the rotary disc (54) is inserted in the installation groove.

9. The railway gravity balance type ultrahigh detection device of claim 1, characterized in that: the bottom of detecting car (1) is provided with the walking wheel, walking wheel and track (2) looks adaptation, the top of detecting car (1) is provided with pushing hands (6).