CN215329097U - Railway line center detection vehicle - Google Patents

Abstract

A railway line center detection vehicle comprises a walking trolley, a track gauge, an ultrahigh detector and a prism measuring device, wherein the track gauge comprises a bottom plate and two racks, a middle gear is arranged at the center of the bottom plate, one rack is arranged on one side of the middle gear, the device comprises a base plate, a rack, a middle gear, a spring, an electric insulation bearing, a support frame, a prism measuring device, a pressing block and a scale, wherein the rack is provided with the scale, the other rack is arranged on the other side of the middle gear, a pointer is arranged on the rack, the rack is meshed with the middle gear, one end of the rack is sleeved with the spring, the other end of the rack is connected with the electric insulation bearing, the electric insulation bearing is contacted with the inner side surface of a steel rail, the support frame is sleeved on the base plate and the rack and is connected with a walking trolley, the prism measuring device comprises a prism, a prism rod and the pressing block, one end of the prism rod is connected with the prism, the other end of the prism rod is connected with the pressing block, and the pressing block is fixed at a position, which is positioned right above the middle gear, on the base plate. The design has the advantages of high measurement precision, high working efficiency and low cost.

Description

Railway line center detection vehicle

Technical Field

The utility model relates to the technical field of rail detection, in particular to a railway line center detection vehicle which is mainly suitable for improving the measurement precision, improving the working efficiency and reducing the cost.

Background

In the traditional measurement operation of the ballast track, the prism rod is placed in the center of the steel rail for measurement, the placement position is estimated by workers, the error is large, and the prism group is also held by the workers, so that the labor is wasted; meanwhile, the prism support is not easy to drop on the railway ballast, so that the placing speed is low, a worker often bends over, the labor intensity is high, fatigue is easy to generate, and the overall operation efficiency is low. Meanwhile, the track fine adjustment needs a fine adjustment trolley, the fine adjustment trolley is expensive, the lease expense is high, and the requirement of the fine adjustment trolley is large due to high-speed railway development, so that the detection cost is high.

Disclosure of Invention

The utility model aims to overcome the defects and problems of low measurement precision, low working efficiency and high cost in the prior art, and provides a railway line center detection vehicle with high measurement precision, high working efficiency and low cost.

In order to achieve the above purpose, the technical solution of the utility model is as follows: a railway line center detection vehicle comprises a walking trolley, a track gauge measuring scale and a prism measuring device;

the walking trolley comprises a frame and a hand push rod which are connected, wherein a nylon wheel is arranged at the bottom of one end of the frame, the nylon wheel is arranged on the left steel rail, a steel grooved wheel is arranged at the bottom of the other end of the frame, and the steel grooved wheel is clamped on the right steel rail;

the track gauge measuring scale comprises a bottom plate, a first rack and a second rack, wherein a middle gear is arranged in the center of the bottom plate, a first mounting groove and a second mounting groove are respectively formed in the positions, located on the two sides of the middle gear, on the bottom plate, the first rack is arranged in the first mounting groove, the first rack is meshed with the middle gear, a mounting column is arranged at one end of the first rack, a first spring is sleeved on the mounting column and fixed in the first mounting groove through a spring pressing block, the other end of the first rack is connected with an electric insulation bearing through an electric insulation bearing block, scales are arranged on the first rack, the second rack is arranged in the second mounting groove, the second rack is meshed with the middle gear, a mounting column is arranged at one end of the second rack, a first spring is sleeved on the mounting column and fixed in the second mounting groove through a spring pressing block, and the other end of the second rack is connected with the electric insulation bearing through the electric insulation bearing block, a first pointer is arranged on the second rack, the electric insulation bearings of the first rack and the second rack are respectively contacted with the inner side surfaces of the left steel rail and the right steel rail, and supporting frames are sleeved on the bottom plate, the first rack and the second rack and connected with the frame;

the prism measuring device comprises a prism, a prism rod and a pressing block, one end of the prism rod is connected with the prism, the other end of the prism rod is connected with the pressing block, and the pressing block is fixed at a position, located right above the intermediate gear, on the bottom plate.

The frame is T style of calligraphy structure, and the frame includes crossbeam and longeron, the bottom of crossbeam one end is provided with the nylon wheel, the crossbeam other end is connected with the longeron is perpendicular, the longeron is located right above the right rail, and the bottom at longeron both ends all is provided with the steel sheave, the handspike is connected with the crossbeam.

The walking trolley also comprises a brake device, the brake device comprises a brake handle, a brake ram and a brake shoe, one end of the brake ram is connected with the brake pull pin, the other end of the brake ram is connected with the brake handle through the brake cable, the brake handle is connected with the hand push rod, the brake ram is hinged with the brake ram base, the brake ram base is connected with the top of the brake wheel cover plate, the bottom of the brake wheel cover plate is connected with the frame, the bottom of the brake wheel cover plate is connected with the wheel bracket, the brake pull pin sequentially penetrates through the brake wheel cover plate and the wheel bracket and then is connected with a brake shoe, the brake shoe is positioned right above the steel grooved wheel, two ends of the steel grooved wheel are respectively connected with two sides of the wheel bracket, the brake shoe is provided with a brake guide pin, the brake guide pin sequentially penetrates through the wheel support and the brake wheel cover plate and then extends out, and a second spring is sleeved on the brake guide pin between the brake shoe and the wheel support.

The support frame includes sliding block and mounting panel, the sliding block is connected with the mounting panel, and the mounting panel is connected with the frame, the sliding block is hollow structure, and the sliding block suit is on bottom plate, a rack, No. two racks, the interior top surface of sliding block is provided with the ball, goes up the ball and cooperatees with the spout of bottom plate, a rack, No. two rack up end, the interior bottom surface of sliding block is provided with down the ball, and the ball cooperatees with the spout of bottom plate, a rack, No. two rack lower extreme face down, two medial surfaces of sliding block are provided with the kingpin that contacts with bottom plate, a rack, No. two rack both sides face.

The sliding block comprises a base and a rack cover plate, the base is of a U-shaped structure, lower balls are arranged on the inner bottom surface of the base, rolling needles are arranged on two inner side surfaces of the base, the rack cover plate is connected with the top of the base, upper balls are arranged on the bottom surface of the rack cover plate, the mounting plate is of an L-shaped structure, fixing holes connected with the frame are formed in a transverse plate of the mounting plate, and a vertical plate of the mounting plate is connected with the base.

Prism measuring device still includes universal bulb and universal ball support, the mounting through-hole has been seted up at the middle part of universal ball support, and universal ball support is connected with the top of briquetting, the bell mouth coaxial with the mounting through-hole has been seted up at the top of briquetting, universal bulb includes the body of rod and universal ball, the body of rod is connected with the prism pole, universal ball is located the mounting through-hole, and the bottom of universal ball is located the bell mouth, the communicating regulation screw hole with the mounting through-hole has been seted up to the side of universal ball support, adjusts the downthehole butterfly bolt that installs of screw thread, and the butterfly bolt supports on universal ball.

The top of universal ball support is connected with the apron, and the apron suit is on the body of rod, the apron is including the first apron and No. two apron that the symmetry set up, semicircular groove has been seted up to the side that first apron, No. two apron are relative.

The frame is provided with an ultrahigh detector, the ultrahigh detector comprises a gearbox supporting plate, a gearbox, a balance block, a dial plate and a pointer II, the bottom of the gearbox supporting plate is connected with the frame, the gearbox is arranged on the back of the gearbox supporting plate, the balance block is arranged on the back of the gearbox, the dial plate is arranged on the front of the gearbox supporting plate, a first connecting shaft, a second connecting shaft and a third connecting shaft are arranged inside the gearbox, one end of the first connecting shaft penetrates through the gearbox and then is connected with the balance block, the other end of the first connecting shaft is connected with the gearbox, the outer wall of the first connecting shaft is sleeved with a first gear, two ends of the second connecting shaft are connected with the gearbox, the outer wall of the second connecting shaft is sleeved with a second gear and a third gear, and the second gear is meshed with the first gear, one end of the third connecting shaft penetrates through the gearbox and then is connected with the pointer II, the other end of the third connecting shaft is connected with the gearbox, and a fourth gear meshed with the third gear is sleeved on the outer wall of the third connecting shaft.

The balancing piece is two kidney forms, and 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 kidney board, the right kidney board.

The dial plate comprises a dial plate sleeve and a dial plate, one end of the dial plate sleeve is inserted into the gearbox supporting plate, a transparent protective cover is arranged at the other end of the dial plate sleeve, the dial plate is connected with the inner wall of the dial plate sleeve, threaded holes are formed in the left side and the right side of the gearbox supporting plate, wave bead positioning screws and adjusting bolts are sequentially arranged in the threaded holes, one end of each wave bead positioning screw is connected with the adjusting bolts, an annular groove is formed in the outer wall of the dial plate sleeve in the circumferential direction, and the other end of each wave bead positioning screw is located in the annular groove.

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

1. in the railway line center detection vehicle, when the track gauge is measured, the two electrically insulated bearings are respectively abutted against the inner sides of the left and right steel rails, when the track gauge is changed, the rack is lengthened or shortened through the intermediate gear under the action of the spring, meanwhile, the bottom plate can slide left and right, and then the continuous linear measurement of the track gauge is realized according to the direct reading of the scales and the pointer, so that the working efficiency is improved, and the measurement precision is also improved; the track gauge is measured while the prism is always positioned at the center of the left steel rail and the right steel rail, so that the problem of prism centering is solved, then the prism rod is manually adjusted to enable the bubble to be centered, the prism rod keeps a vertical position under the action of the pressing block, at the moment, the total station can be used for measuring the spatial position of the line center, and finally, the spatial position of the track is adjusted according to the measured value. Therefore, the utility model improves the measurement precision, improves the working efficiency and reduces the cost.

2. According to the railway line center detection vehicle, the nylon wheels are arranged at the bottom of one end of the cross beam, the other end of the cross beam is vertically connected with the longitudinal beam, the longitudinal beam is positioned right above the right steel rail, and the steel grooved wheels are arranged at the bottoms of the two ends of the longitudinal beam; when the walking trolley moves, the brake lever is pressed, the brake lever controls the brake ram to move through the brake cable, and the brake ram drives the brake pull pin to move upwards, so that the brake shoe is separated from the steel grooved wheel; when the walking dolly need stop measuring, loosen the brake handle, at this moment, under the effect of spring, the brake shoe resets and laminates with the steel sheave, and above-mentioned design not only brakes effectually, easy operation moreover. Therefore, the utility model has the advantages of good stability, good safety, high reliability and simple and convenient operation.

3. The utility model relates to a railway line center detection vehicle, wherein a support frame comprises a sliding block and a mounting plate, the sliding block comprises a base and a rack cover plate, the base is of a U-shaped structure, lower balls are arranged on the inner bottom surface of the base, roller pins are arranged on two inner side surfaces of the base, the rack cover plate is connected with the top of the base, upper balls are arranged on the bottom surface of the rack cover plate, the mounting plate is of an L-shaped structure, a transverse plate of the mounting plate is provided with a fixing hole connected with a vehicle frame, and a vertical plate of the mounting plate is connected with the base. Therefore, the utility model has high reliability and simple and convenient installation and disassembly.

4. In the railway line center detection vehicle, the prism measuring device comprises the pressing block, the universal ball head and the universal ball support, so that the prism rod can be conveniently and quickly assembled on the vehicle frame and the prism can be ensured to be centered on one hand, and the prism rod can be manually adjusted to center bubbles and can be ensured to keep the vertical position under the action of the universal ball head, the universal ball support and the base, thereby improving the measuring accuracy; the top of the universal ball support is connected with a cover plate to protect the universal ball head. Therefore, the utility model improves the measurement accuracy, reduces the difficulty of installation and disassembly and has high reliability.

5. In the railway line center detection vehicle, when a curved section track is detected, a walking trolley is placed on the track, the rail surface elevations of a left rail and a right rail are detected through an ultrahigh detection prism, a dial plate is manually rotated to finish calibration operation, then the walking trolley is pushed to detect the curved section track, when the walking trolley moves, if the rail surface ultrahigh heights of the left rail and the right rail are changed, a balance block is always kept horizontal under the action of gravity, the dial plate rotates leftwards or rightwards along with a vehicle body, a first connecting shaft is further driven to rotate, a first gear drives a second gear to rotate, the second connecting shaft drives a third gear to rotate, a fourth gear meshed with the third gear rotates, the third connecting shaft drives a second pointer to rotate in the dial plate, a measured value is read, measurement operation is finished, the walking trolley can drive an ultrahigh detector to move, the method can realize continuous detection on the curve section track, improve the detection continuity, and can carry out calibration during measurement, so that the measurement result is more accurate, and the accuracy of the measurement result is improved; when needs adjust the calibration, only need rotate the table set cover, because pointer two is connected with the connecting rod in the backup pad, at the in-process of rotating the table set cover, ripples pearl set screw plays spacing effect, the directional fixed unchangeable of pointer two, the calibrated scale on the dial plate cover rotates, thereby coincide the zero scale of calibrated scale and the direction that pointer two indicates, and then accomplish whole calibration process, whole calibration process is comparatively simple, the required time is short, reduce the labour that the calibration was adjusted, also improve whole testing process's efficiency simultaneously. Therefore, the utility model has high measurement precision, simple operation and high working efficiency.

Drawings

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

FIG. 2 is a schematic structural view of the traveling carriage of the present invention.

Fig. 3 is a schematic perspective view of the brake apparatus of the present invention.

Fig. 4 is a front view of the brake apparatus of the present invention.

Fig. 5 is a schematic structural view of the gauge measuring tape according to the present invention.

Fig. 6 is a schematic view of an assembly structure of the first rack, the second rack and the bottom plate in fig. 5.

Fig. 7 is a schematic view of the structure of the base plate of fig. 5.

Fig. 8 is a schematic structural view of the support frame in fig. 5.

Fig. 9 is a schematic view of the mounting structure of the prism rod in the present invention.

FIG. 10 is a schematic diagram of the structure of the compact of FIG. 9.

Fig. 11 is a schematic structural view of the gimbaled ball of fig. 9.

FIG. 12 is a schematic diagram of the gimbal ball mount of FIG. 9.

Fig. 13 is a schematic structural view of the cover plate of the present invention.

Fig. 14 is a schematic structural view of the ultra-high detector of the present invention.

Fig. 15 is a schematic view of the internal structure of the transmission case of fig. 14.

Fig. 16 is a side view of fig. 15.

Fig. 17 is a schematic view of an assembly structure of the dial plate and the transmission case support plate in fig. 14.

Fig. 18 is a top view of fig. 17.

Fig. 19 is a side view of fig. 17.

Fig. 20 is a schematic view of the construction of the dial cover of fig. 17.

FIG. 21 is a schematic view of the weight of FIG. 14.

In the figure: the traveling trolley comprises a traveling trolley 1, a frame 11, a cross beam 111, longitudinal beams 112, a hand push rod 12, a nylon wheel 13, a steel grooved wheel 14, a brake device 15, a brake handle 150, a brake lifting lever 151, a brake shoe 152, a brake pull pin 153, a brake cable 154, a brake lifting lever base 155, a brake wheel cover plate 156, a wheel support 157, a brake guide pin 158, a second spring 159, a gauge 2, a bottom plate 21, a first mounting groove 211, a second mounting groove 212, a chute 213, a first rack 22, a mounting column 221, an electrically insulating bearing seat 222, a scale 223, a second rack 23, a first pointer 231, a middle gear 24, a first spring 25, a spring pressing block 26, an electrically insulating bearing 27, a support frame 28, a base 281, a rack cover plate 282, a mounting plate 283, a lower ball 284, a roller needles 285, an ultrahigh detector 3, a gearbox support plate 31, a threaded hole 311, a bead positioning screw 312, an adjusting bolt 313, a gearbox 32, a steel grooved wheel, a steel wheel, a brake device 15, a brake lever 150, a brake shoe brake block 2, a brake block 211, a first mounting groove 212, a second groove 212, a sliding grooves 213, a first rack 22, a second groove 213, a second groove 23, a second groove, a third groove, a fourth groove, the first connecting shaft 321, the second connecting shaft 322, the third connecting shaft 323, the first gear 324, the second gear 325, the third gear 326, the fourth gear 327, the balance weight 33, the left kidney plate 331, the right kidney plate 332, the connecting plate 333, the horizontal bubble 334, the dial 34, the dial sleeve 341, the dial 342, the transparent protective cover 343, the annular groove 344, the second pointer 35, the prism measuring device 4, the prism 41, the prism rod 42, the pressing block 43, the tapered hole 431, the universal ball head 44, the rod body 441, the universal ball 442, the universal ball support 45, the installation through hole 451, the adjustment threaded hole 452, the first cover plate 46, the second cover plate 47, the semicircular groove 48, the left steel rail 5 and the right steel rail 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 21, a railway line center inspection vehicle comprises a walking trolley 1, a track gauge measuring scale 2 and a prism measuring device 4;

the walking trolley 1 comprises a frame 11 and a hand push rod 12 which are connected, a nylon wheel 13 is arranged at the bottom of one end of the frame 11, the nylon wheel 13 is arranged on the left steel rail 5, a steel grooved wheel 14 is arranged at the bottom of the other end of the frame 11, and the steel grooved wheel 14 is clamped on the right steel rail 6;

the track gauge measuring scale 2 comprises a bottom plate 21, a first rack 22 and a second rack 23, wherein a middle gear 24 is arranged in the center of the bottom plate 21, a first mounting groove 211 and a second mounting groove 212 are respectively formed in the positions, located on the two sides of the middle gear 24, of the bottom plate 21, the first rack 22 is arranged in the first mounting groove 211, the first rack 22 is meshed with the middle gear 24, a mounting column 221 is arranged at one end of the first rack 22, a first spring 25 is sleeved on the mounting column 221, the first spring 25 is fixed in the first mounting groove 211 through a spring pressing block 26, the other end of the first rack 22 is connected with an electric insulation bearing 27 through an electric insulation bearing seat 222, scales 223 are arranged on the first rack 22, the second rack 23 is arranged in the second mounting groove 212, the second rack 23 is meshed with the middle gear 24, and a mounting column 221 is arranged at one end of the second rack 23, the mounting column 221 is sleeved with a first spring 25, the first spring 25 is fixed in the second mounting groove 212 through a spring pressing block 26, the other end of the second rack 23 is connected with an electric insulation bearing 27 through an electric insulation bearing seat 222, a pointer I231 is arranged on the second rack 23, the electric insulation bearings 27 of the first rack 22 and the second rack 23 are respectively contacted with the inner side surfaces of the left steel rail 5 and the right steel rail 6, the bottom plate 21, the first rack 22 and the second rack 23 are sleeved with a supporting frame 28, and the supporting frame 28 is connected with the frame 11;

the prism measuring device 4 comprises a prism 41, a prism rod 42 and a pressing block 43, one end of the prism rod 42 is connected with the prism 41, the other end of the prism rod 42 is connected with the pressing block 43, and the pressing block 43 is fixed on the bottom plate 21 at a position right above the intermediate gear 24.

The frame 11 is a T-shaped structure, the frame 11 comprises a cross beam 111 and a longitudinal beam 112, nylon wheels 13 are arranged at the bottom of one end of the cross beam 111, the other end of the cross beam 111 is vertically connected with the longitudinal beam 112, the longitudinal beam 112 is located right above the right steel rail 6, steel grooved wheels 14 are arranged at the bottoms of two ends of the longitudinal beam 112, and the hand push rod 12 is connected with the cross beam 111.

The walking trolley 1 further comprises a brake device 15, the brake device 15 comprises a brake handle 150, a brake ram 151 and a brake shoe 152, one end of the brake ram 151 is connected with a brake pull pin 153, the other end of the brake ram 151 is connected with the brake handle 150 through a brake wire 154, the brake ram 150 is connected with a hand push rod 12, the brake ram 151 is hinged with a brake ram base 155, the brake ram base 155 is connected with the top of a brake wheel cover plate 156, the bottom of the brake wheel cover plate 156 is connected with the frame 11, the bottom of the brake wheel cover plate 156 is connected with a wheel bracket 157, the brake pull pin 153 sequentially penetrates through the brake wheel cover plate 156 and the wheel bracket 157 and then is connected with the brake shoe 152, the brake shoe 152 is located right above the steel sheave 14, two ends of the steel sheave 14 are respectively connected with two sides of the wheel bracket 157, the brake shoe 152 is provided with a brake guide pin 158, the brake guide pin 158 sequentially passes through the wheel bracket 157 and the brake wheel cover 156 and then extends out, and a second spring 159 is sleeved on the part, located between the brake shoe 152 and the wheel bracket 157, of the brake guide pin 158.

The support frame 28 comprises a sliding block and a mounting plate 283, the sliding block is connected with the mounting plate 283, the mounting plate 283 is connected with the frame 11, the sliding block is of a hollow structure, the sliding block is sleeved on the bottom plate 21, the first rack 22 and the second rack 23, the inner top surface of the sliding block is provided with an upper ball, the upper ball is matched with the sliding groove 213 on the upper end surface of the bottom plate 21, the first rack 22 and the second rack 23, the inner bottom surface of the sliding block is provided with a lower ball 284, the lower ball 284 is matched with the sliding groove 213 on the lower end surface of the bottom plate 21, the first rack 22 and the second rack 23, and two inner side surfaces of the sliding block are provided with roller needles 285 which are contacted with two side surfaces of the bottom plate 21, the first rack 22 and the second rack 23.

The sliding block comprises a base 281 and a rack cover plate 282, the base 281 is of a U-shaped structure, lower balls 284 are arranged on the inner bottom surface of the base 281, rolling needles 285 are arranged on two inner side surfaces of the base 281, the rack cover plate 282 is connected with the top of the base 281, upper balls are arranged on the bottom surface of the rack cover plate 282, the mounting plate 283 is of an L-shaped structure, fixing holes connected with the frame 11 are formed in a transverse plate of the mounting plate 283, and a vertical plate of the mounting plate 283 is connected with the base 281.

The prism measuring device 4 further comprises a universal ball head 44 and a universal ball support 45, wherein a mounting through hole 451 is formed in the middle of the universal ball support 45, the universal ball support 45 is connected with the top of the pressing block 43, a taper hole 431 coaxial with the mounting through hole 451 is formed in the top of the pressing block 43, the universal ball head 44 comprises a rod body 441 and a universal ball 442, the rod body 441 is connected with the prism rod 42, the universal ball 442 is located in the mounting through hole 451, the bottom of the universal ball 442 is located in the taper hole 431, an adjusting threaded hole 452 communicated with the mounting through hole 451 is formed in the side surface of the universal ball support 45, a butterfly bolt is mounted in the adjusting threaded hole 452, and the butterfly bolt abuts against the universal ball 442.

The top of universal ball support 45 is connected with the apron, and the apron suit is on body of rod 441, the apron is including a apron 46 and No. two apron 47 that the symmetry set up, semicircular groove 48 has been seted up to a side that apron 46, No. two apron 47 are relative.

The vehicle frame 11 is provided with the superelevation detector 3, the superelevation detector 3 comprises a gearbox support plate 31, a gearbox 32, a balance block 33, a dial 34 and a pointer II 35, the bottom of the gearbox support plate 31 is connected with the vehicle frame 11, the gearbox 32 is arranged on the back of the gearbox support plate 31, the balance block 33 is arranged on the back of the gearbox 32, the dial 34 is arranged on the front of the gearbox support plate 31, a first connecting shaft 321, a second connecting shaft 322 and a third connecting shaft 323 are arranged inside the gearbox 32, one end of the first connecting shaft 321 is connected with the balance block 33 after penetrating through the gearbox 32, the other end of the first connecting shaft 321 is connected with the gearbox 32, a first gear 324 is sleeved on the outer wall of the first connecting shaft 321, two ends of the second connecting shaft 322 are both connected with the gearbox 32, a second gear 325 and a third gear 326 are sleeved on the outer wall of the second connecting shaft 322, the second gear 325 is meshed with the first gear 324, one end of the third connecting shaft 323 passes through the gear box 32 and then is connected with the second pointer 35, the other end of the third connecting shaft 323 is connected with the gear box 32, and a fourth gear 327 meshed with the third gear 326 is sleeved on the outer wall of the third connecting shaft 323.

The balance weight 33 is in a double kidney shape, the balance weight 33 comprises a left kidney plate 331, a right kidney plate 332 and a connecting plate 333, the left side and the right side of the connecting plate 333 are respectively connected with the left kidney plate 331 and the right kidney plate 332, the connecting plate 333 is connected with a first connecting shaft 321, and horizontal air bubbles 334 are arranged on the left kidney plate 331 and the right kidney plate 332.

The dial plate 34 comprises a dial plate sleeve 341 and a dial plate 342, one end of the dial plate sleeve 341 is inserted and mounted on the gearbox supporting plate 31, the other end of the dial plate sleeve 341 is provided with a transparent protective cover 343, the dial plate 342 is connected with the inner wall of the dial plate sleeve 341, the left side and the right side of the gearbox supporting plate 31 are both provided with threaded holes 311, wave bead positioning screws 312 and adjusting bolts 313 are sequentially arranged in the threaded holes 311, one end of the wave bead positioning screw 312 is connected with the adjusting bolt 313, the outer wall of the dial plate sleeve 341 is provided with an annular groove 344 along the circumferential direction, and the other end of the wave bead positioning screw 312 is located in the annular groove 344.

The principle of the utility model is illustrated as follows:

in order to ensure the stability of the vehicle body and the authenticity of acquired data and avoid the problem that the leveling of a prism is influenced by the suspension of wheels when the vehicle body passes through a track triangular pit, a T-shaped vehicle frame is adopted as a vehicle frame structure, the T-shaped joint is supported and reinforced by oblique angle steel for ensuring the rigidity of the vehicle body, and the surface of No. 8 channel steel with the thickness of 5 mm is subjected to spray plastic rust prevention treatment; if the suspected vehicle body is too heavy, the cut round holes of the vehicle body can be subjected to light weight treatment, and the surface of the steel plate with the thickness of 3mm can be subjected to plastic spraying and rust preventing treatment after being rolled according to the overall dimension of No. 8 channel steel; in order to facilitate the boxing transportation, the frame is disconnected at a position which is about 1.2 meters away from the nylon wheel side, the disconnected position is connected by 4M 8 bolts, and the T-shaped joint and the bevel steel support are connected by welding.

The nylon wheel can prevent the left and right steel rails from being communicated, the two steel grooved wheel sets on the right side are directly clamped on the steel rails to walk, the detection vehicle is prevented from moving left and right to fall off the rail, the steel grooved wheel set on the front right is provided with a brake device, the brake wheel is of a normally closed structure, and the brake shoe is tightly attached to the steel grooved wheel under the action of left and right spring forces when the trolley is stopped, so that the brake effect is achieved; when the observation is finished and the user needs to walk forwards, the user can push forwards by holding the brake handle and loosening the brake shoe, and the user can perform measurement operation by loosening the brake handle after reaching the observation point. The hand push rod is welded into a T shape by adopting a stainless steel pipe with the thickness of 1 mm and the diameter of 22 mm. Each steel grooved wheel set mainly comprises a steel grooved wheel, two F626ZZ flange bearings, an axle with threads at two ends and a roller frame; the steel grooved wheel is a grooved wheel which is turned by 45# round steel with the length of 90mm and the diameter of 80mm into a grooved wheel with the inner diameter of 40mm and the outer diameter of 80mm, the length of the contact surface between the wheel and a steel rail is 70mm, the edge of the wheel is turned into an inclined plane with the thickness of 3mm, and the thinnest part of the wheel rim is 7 mm. The nylon wheel set comprises a nylon wheel, two F626ZZ flange bearings, an axle and a roller frame, wherein the nylon wheel is machined into a smooth wheel with the length of 90mm and the diameter of 40mm by a lathe, holes with the diameter of 12mm are formed in the axes of all the wheels to facilitate the penetration of the axle, in order to reduce various resistances and wheel limitation during walking, the two sides of the wheel are machined into stepped sinking type installation F626ZZ flange bearings by the lathe, then support roller frames are installed on the two sides of the wheel, the roller frame is bent by a numerical control plate folding machine after laser cutting blanking by adopting a 4 mm thick hot rolled steel plate, the roller frame is welded with a vehicle body, and the surface of a steel grooved wheel is subjected to blackening treatment.

Because the operation point can not guarantee whether a line is opened or not, the left and right steel rails of the opened railway can not be communicated with each other, once the left and right steel rails are communicated with each other, a train is displayed in a control center to be parked, the normal operation of the opened railway is influenced, the rail distance measurement is respectively supported on the left and right steel rails through racks, the insulation problem of the left and right steel rails is solved, meanwhile, the problems of component movement and durability are solved, the problem that the contact surface of the steel rails is finally determined to be insulated by selecting special electric insulation bearings is solved, the two positions can be insulated by 5000V voltage through tests, and the construction operation safety can be completely guaranteed. The groove-shaped steel wheel on the right side of the frame is clamped on the steel rail, so that the reference edge is arranged on the inner side of the right steel rail. The distance between the left rail and the right rail is measured by measuring the distance between the inner sides of the left rail and the right rail, and the left rail and the right rail can be kept insulated by two electrically insulated bearings which are always supported on the inner sides of the rails to rotate, so that the distance can be measured, the electrically insulated bearings are respectively fixed at two ends of two racks, the gear is arranged in the center of the bottom plate, and the two racks are symmetrically distributed in mounting grooves at two sides of the gear. When the gauge changes in the dolly walking process, make the rack lengthen simultaneously or shorten simultaneously through the gear under the spring force effect of rack rear end, because the reference edge is on the right side steel rail, so the bottom plate can remove about simultaneously when rack length changes, the removal value is half behind the total extension or total shortening value subtraction standard gauge, because the actual gauge change volume is little, so this range finding telescopic stroke is set for to this range finding chi is 30 millimeters, effective range finding is between 1405 to 1465 promptly, when the detection car walks on the track optional position, can both be according to the instantaneous reading of scale position that indicates on the rack like this. When the gear rack is used on a wide rail or a narrow rail, the gear rack can be used only by correspondingly increasing or reducing the length of the gear rack. Among four aluminum alloy support frames, two in the middle are used for bottom plate and frame bolted connection, and two on the edge are used for rack and frame bolted connection. Because the track gauge measuring ruler is continuously moved left and right in the work, in order to reduce the power loss of the spring, aluminum alloy materials are adopted as much as possible and hollowed out for lightening treatment, all sliding surfaces are used for reducing friction resistance and limiting, steel balls or rolling needles are adopted, and sliding friction is replaced by rolling friction.

The pressing block is fixed right above the middle gear of the bottom plate of the gauge measuring ruler, and the distance measuring racks can apply a pair of forces with equal magnitude and opposite directions through the middle gear under the action of the spring, so that the racks on two sides stretch out and draw back simultaneously, and the gauge measurement is ensured to be carried outMeanwhile, the prism is always positioned in the center of the left track and the right track, so that the problem of prism centering is solved, then the prism rod is manually adjusted to enable the bubble to be centered, the prism rod can keep a vertical position under the braking of the friction force of the universal support spherical hinge, at the moment, the total station can be used for measuring the spatial position of the line center, and then the spatial position of the track is adjusted according to the measured value. The measured position is in the center of the line, the bottom of the prism rod of the normal road section is coincident with the rail surface, so the measured elevation data is directly adopted, when the height of the rail surface is measured on the ultrahigh road section, the height of the prism is the length of the prism plus or minus half of the actually measured ultrahigh value, for example, the left side is ultrahigh, then the elevation of the low rail surface is the height of the actually measured elevation value plus or minus half of the ultrahigh value, and the elevation of the high rail surface is the height of the actually measured elevation value plus or minus half of the ultrahigh value. The height of the rotation center of the universal ball support is 20 mm from the rail surface, so that the centering error is 0 in a straight line section, the angle value corresponding to the ultrahigh limit value 150/1505 is 5.692 degrees according to the cotangent formula in a curve section, the centering error/20 in tan5.692 degrees is calculated according to the tangent formula, the centering error in the ultrahigh limit state is 1.993 mm, and according to the time speed and curve radius data of most of the existing railway design, the ultrahigh calculation formula h is 7.6Vmax²the/R shows that most railway super-high values are within 50 mm, so that the centering error caused by the curve section is 0.664 mm.

The dial plate adopts the diameter to be 100 millimeters thick 1 millimeter's aluminium dish in the super high detector, for making things convenient for the reading, adopts positive reverse full circle digital sign (360 degrees are marked in the forward rotation promptly, 360 degrees are marked in the reverse rotation), and the dial plate cover blocks the ring channel through two transverse bolt and fixes in the backup pad, and the calibrated scale passes through the powerful glue and bonds with the dial plate cover, and the calibrated scale just can realize 360 arbitrary rotations along with the dial plate cover like this. The counterbalance is cut into double kidney shape by 10 mm thick hot rolled steel plate by laser line, the surface of the steel plate is blackened, and horizontal air bubbles are arranged on the counterbalance to ensure that the counterbalance can be accurately leveled during reading. The support plates were cut with a 16 mm thick 6061 aluminum plate and bolted together using M6 bolts to provide strength while reducing weight. The gearbox adopts two-stage speed reduction, and the gear module is 0.5; in order to reduce the working resistance and ensure a good working state, two ends of each connecting shaft of the gearbox are provided with 606ZZ type high-speed rolling bearings, the number of the high-speed rolling bearings is totally 6, the high-speed rolling bearings are arranged on a supporting plate of the gearbox in an interference fit manner, and all aluminum plates are connected through M6 bolts.

The working principle of the ultrahigh detector is as follows: the ultrahigh value of the railway track is generally between 0 and 150 mm, the corresponding horizontal distance is 1505 mm (standard track gauge 1435+ steel rail width 70), when the detection vehicle passes through a curve section, the lifting of the outer steel rail can cause the transverse rotation of the vehicle body by an angle, the tangent formula tana is the ultrahigh value/steel rail center distance 1505, the calculated angle value is very small, and the reaction is insensitive; if the rotating angle is directly indicated by the deadweight of the hanging hammer, the actual ultrahigh value needs to be known, calculation is needed according to a rotating angle value set formula, time and labor are wasted, and the method is very troublesome, and in order to directly adopt a standard 360-degree dial according to the formula 1: 1, displaying the ultrahigh value (the pointer is equal to one millimeter in the distance direction once rotating once every second time, namely the ultrahigh value is 1 millimeter), and then 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 which is 1505 mm long, drawing a straight line which is 1 degree in length and is 1505 mm in angle along one end of the straight line as an end point, marking the width of an opening to be 26.27 mm, and finally calculating and verifying tan1 degrees as an ultrahigh value/1505 through a calculator to obtain the ultrahigh value which is 26.27 mm, so that the corresponding ultrahigh value is 26.27 mm when the vehicle body rotates for 1 degree, and designing a two-stage gearbox by taking the ultrahigh value as a reference, wherein the two-stage gear ratios are respectively 20:100 and 20:105.08, the power loss and the gear processing are convenient, the acceleration ratio is 1:26.5, and the corresponding tooth numbers are 20:100 and 20: 35106; when the dolly passes through the curve highway section, the automobile body is rotatory and the balancing piece remains the horizontality throughout, just so drives the dial plate through the automobile body rotation and follows the automobile body clockwise or anticlockwise rotation, and pointer two-pass gearbox also can follow the rotation with higher speed, and the gearbox just so converts the angle value to the millimeter value and has just realized showing the purpose of actual superelevation value. Because the ultrahigh detector is designed according to the standard track gauge 1435 mm, when a wide track or a narrow track is adopted, the acceleration ratio needs to be recalculated and matched again, and the calculation principle is the same. The ultrahigh detector is detachable, so that calibration is required before use every time, the calibration method is to utilize the prism group on the nylon wheel to measure the elevation of the left rail surface of the same mileage at first, then the elevation of the right rail surface is measured by rotating the vehicle body for 180 degrees, the elevation difference of the two rail surfaces is the ultrahigh value, the dial of the detector can be rotated at will for 360 degrees, and the dial can be rotated to the ultrahigh value indicated by the pointer II after the balance block is kept horizontal. In order to adapt to the common practice and facilitate reading, the scale 0 of the second pointer is enabled to face right below or right above during adjustment, if the difference is too much, the second pointer is enabled to face right above or right below by rotating the balance block, then the bolt on the balance block is loosened, and the balance block is rotated to be horizontal and then the bolt is screwed down. Because the ultrahigh detector is sensitive to reaction, the slight movement influence can be amplified by 26.27 times through the gearbox, the influence of adverse factors such as the friction resistance inside the gearbox in the use process, the windward side of the balance weight is large, vibration is generated during walking and the like is considered, the display numerical value is inaccurate due to the self-balancing reset error of the balance weight, whether horizontal bubbles on the balance weight are centered is particularly noticed during each reading, if the horizontal bubbles are not centered, the balance weight is manually rotated once, accurate reading can be realized when the horizontal bubbles are centered, and the reading is carried out along the rotating direction of the pointer II (generally, the left ultrahigh pointer II rotates anticlockwise, and the right ultrahigh pointer II rotates clockwise) because the dial is displayed in a two-way 360 degrees. The ballasted track has more tamping passes due to the large machine, the superelevation can be verified by the superelevation detector for the first several times, the ballasted track enters a fine adjustment stage and is measured by the prism, the superelevation of the ballastless track in a coarse adjustment stage is uniformly measured by the prism, and the superelevation measuring prism jack is positioned right above the middle of the nylon wheel.

In the track is just transferred, in order to can direct indication super high value convenience and theoretical value contrast, this detection car has adopted two demonstration of gravity balance formula machinery pointer, and the track is examined the car and can be raised through curve section outside track, leads to the automobile body can rotatory an angle, because super high value is little for gauge direction contained angle, so automobile body rotation angle is also not big, in order to make super high value 1 through balancing piece and gearbox: 1, finally, the angle value is amplified through the gearbox to realize that the pointer is equal to one millimeter in the height direction every time the pointer rotates once, so that the angle value caused by the superelevation is converted into a millimeter value in the length direction. Because the circumference is 360 degrees, the measuring range of the trolley is-360 mm theoretically, and the ultrahigh value of the railway design is generally within 150 mm, so that the actual requirement can be completely met. When the trolley passes through a curve road section, the trolley body rotates left and right, and the balance block is always horizontal, so that the pointer II on the trolley body is driven to rotate clockwise or anticlockwise, and the purpose of displaying the actual ultrahigh value is achieved; when the track enters a fine adjustment stage, the height of the ultrahigh track can be measured only by inserting the prism group above the nylon wheel on the left side to measure the absolute height.

Example 1:

referring to fig. 1 to 21, a railway line center inspection vehicle comprises a walking trolley 1, a track gauge measuring scale 2 and a prism measuring device 4; the walking trolley 1 comprises a frame 11 and a hand push rod 12 which are connected, a nylon wheel 13 is arranged at the bottom of one end of the frame 11, the nylon wheel 13 is arranged on the left steel rail 5, a steel grooved wheel 14 is arranged at the bottom of the other end of the frame 11, and the steel grooved wheel 14 is clamped on the right steel rail 6; the track gauge measuring scale 2 comprises a bottom plate 21, a first rack 22 and a second rack 23, wherein a middle gear 24 is arranged in the center of the bottom plate 21, a first mounting groove 211 and a second mounting groove 212 are respectively formed in the positions, located on the two sides of the middle gear 24, of the bottom plate 21, the first rack 22 is arranged in the first mounting groove 211, the first rack 22 is meshed with the middle gear 24, a mounting column 221 is arranged at one end of the first rack 22, a first spring 25 is sleeved on the mounting column 221, the first spring 25 is fixed in the first mounting groove 211 through a spring pressing block 26, the other end of the first rack 22 is connected with an electric insulation bearing 27 through an electric insulation bearing seat 222, scales 223 are arranged on the first rack 22, the second rack 23 is arranged in the second mounting groove 212, the second rack 23 is meshed with the middle gear 24, and a mounting column 221 is arranged at one end of the second rack 23, the mounting column 221 is sleeved with a first spring 25, the first spring 25 is fixed in the second mounting groove 212 through a spring pressing block 26, the other end of the second rack 23 is connected with an electric insulation bearing 27 through an electric insulation bearing seat 222, a pointer I231 is arranged on the second rack 23, the electric insulation bearings 27 of the first rack 22 and the second rack 23 are respectively contacted with the inner side surfaces of the left steel rail 5 and the right steel rail 6, the bottom plate 21, the first rack 22 and the second rack 23 are sleeved with a supporting frame 28, and the supporting frame 28 is connected with the frame 11; the prism measuring device 4 comprises a prism 41, a prism rod 42 (telescopic prism rod) and a pressing block 43, wherein one end of the prism rod 42 is connected with the prism 41, the other end of the prism rod 42 is connected with the pressing block 43, and the pressing block 43 is fixed on the bottom plate 21 at a position right above the intermediate gear 24.

Example 2:

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

referring to fig. 1 to 21, the vehicle frame 11 is of a T-shaped structure, the vehicle frame 11 includes a cross beam 111 and a longitudinal beam 112, a nylon wheel 13 is disposed at the bottom of one end of the cross beam 111, the other end of the cross beam 111 is vertically connected with the longitudinal beam 112, the longitudinal beam 112 is located right above the right steel rail 6, steel grooved wheels 14 are disposed at the bottoms of the two ends of the longitudinal beam 112, and the hand push rod 12 is connected with the cross beam 111; the walking trolley 1 further comprises a brake device 15, the brake device 15 comprises a brake handle 150, a brake ram 151 and a brake shoe 152, one end of the brake ram 151 is connected with a brake pull pin 153, the other end of the brake ram 151 is connected with the brake handle 150 through a brake wire 154, the brake ram 150 is connected with a hand push rod 12, the brake ram 151 is hinged with a brake ram base 155, the brake ram base 155 is connected with the top of a brake wheel cover plate 156, the bottom of the brake wheel cover plate 156 is connected with the frame 11, the bottom of the brake wheel cover plate 156 is connected with a wheel bracket 157, the brake pull pin 153 sequentially penetrates through the brake wheel cover plate 156 and the wheel bracket 157 and then is connected with the brake shoe 152, the brake shoe 152 is located right above the steel sheave 14, two ends of the steel sheave 14 are respectively connected with two sides of the wheel bracket 157, the brake shoe 152 is provided with a brake guide pin 158, the brake guide pin 158 sequentially passes through the wheel bracket 157 and the brake wheel cover 156 and then extends out, and a second spring 159 is sleeved on the part, located between the brake shoe 152 and the wheel bracket 157, of the brake guide pin 158.

Example 3:

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

referring to fig. 1 to 21, the support frame 28 includes a sliding block and a mounting plate 283, the sliding block is connected to the mounting plate 283, the mounting plate 283 is connected to the frame 11, the sliding block is of a hollow structure, the sliding block is sleeved on the bottom plate 21, the first rack 22 and the second rack 23, an upper ball is disposed on an inner top surface of the sliding block, the upper ball is matched with the sliding groove 213 on the upper end surface of the bottom plate 21, the first rack 22 and the second rack 23, a lower ball 284 is disposed on the inner bottom surface of the sliding block, the lower ball 284 is matched with the sliding groove 213 on the lower end surface of the bottom plate 21, the first rack 22 and the second rack 23, and needle rollers 285 are disposed on two inner side surfaces of the sliding block and are in contact with two side surfaces of the bottom plate 21, the first rack 22 and the second rack 23; the sliding block comprises a base 281 and a rack cover plate 282, the base 281 is of a U-shaped structure, lower balls 284 are arranged on the inner bottom surface of the base 281, rolling needles 285 are arranged on two inner side surfaces of the base 281, the rack cover plate 282 is connected with the top of the base 281, upper balls are arranged on the bottom surface of the rack cover plate 282, the mounting plate 283 is of an L-shaped structure, fixing holes connected with the frame 11 are formed in a transverse plate of the mounting plate 283, and a vertical plate of the mounting plate 283 is connected with the base 281.

Example 4:

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

referring to fig. 1 to 21, the prism measuring device 4 further includes a universal ball head 44 and a universal ball support 45, the middle of the universal ball support 45 is provided with a mounting through hole 451, the universal ball support 45 is connected with the top of the pressing block 43, the top of the pressing block 43 is provided with a tapered hole 431 coaxial with the mounting through hole 451, the universal ball head 44 includes a rod body 441 and a universal ball 442, the rod body 441 is connected with the prism rod 42, the universal ball 442 is located in the mounting through hole 451, the bottom of the universal ball 442 is located in the tapered hole 431, the side of the universal ball support 45 is provided with an adjusting threaded hole 452 communicated with the mounting through hole 451, and a butterfly bolt is mounted in the adjusting threaded hole 452 and abuts against the universal ball 442; the top of universal ball support 45 is connected with the apron, and the apron suit is on body of rod 441, the apron is including a apron 46 and No. two apron 47 that the symmetry set up, semicircular groove 48 has been seted up to a side that apron 46, No. two apron 47 are relative.

Example 5:

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

referring to fig. 1 to 21, the vehicle frame 11 is provided with the superelevation detector 3, the superelevation detector 3 includes a transmission case support plate 31, a transmission case 32, a balance weight 33, a dial 34 and a second pointer 35, the bottom of the transmission case support plate 31 is connected to the vehicle frame 11, the transmission case 32 is disposed on the back of the transmission case support plate 31, the balance weight 33 is disposed on the back of the transmission case 32, the dial 34 is disposed on the front of the transmission case support plate 31, the transmission case 32 is internally provided with a first connection shaft 321, a second connection shaft 322 and a third connection shaft 323, one end of the first connection shaft 321 passes through the transmission case 32 and then is connected to the balance weight 33, the other end of the first connection shaft 321 is connected to the transmission case 32, the outer wall of the first connection shaft 321 is sleeved with a first gear 324, and both ends of the second connection shaft 322 are connected to the transmission case 32, a second gear 325 and a third gear 326 are sleeved on the outer wall of the second connecting shaft 322, the second gear 325 is meshed with the first gear 324, one end of the third connecting shaft 323 passes through the gear box 32 and then is connected with the second pointer 35, the other end of the third connecting shaft 323 is connected with the gear box 32, and a fourth gear 327 meshed with the third gear 326 is sleeved on the outer wall of the third connecting shaft 323; the balance weight 33 is in a double kidney shape, the balance weight 33 comprises a left kidney plate 331, a right kidney plate 332 and a connecting plate 333, the left side and the right side of the connecting plate 333 are respectively connected with the left kidney plate 331 and the right kidney plate 332, the connecting plate 333 is connected with a first connecting shaft 321, and horizontal air bubbles 334 are arranged on the left kidney plate 331 and the right kidney plate 332; the dial plate 34 comprises a dial plate sleeve 341 and a dial plate 342, one end of the dial plate sleeve 341 is inserted and mounted on the gearbox supporting plate 31, the other end of the dial plate sleeve 341 is provided with a transparent protective cover 343, the dial plate 342 is connected with the inner wall of the dial plate sleeve 341, the left side and the right side of the gearbox supporting plate 31 are both provided with threaded holes 311, wave bead positioning screws 312 and adjusting bolts 313 are sequentially arranged in the threaded holes 311, one end of the wave bead positioning screw 312 is connected with the adjusting bolt 313, the outer wall of the dial plate sleeve 341 is provided with an annular groove 344 along the circumferential direction, and the other end of the wave bead positioning screw 312 is located in the annular groove 344.

Claims (10)

1. A railway line center detection vehicle is characterized by comprising a walking trolley (1), a track gauge measuring scale (2) and a prism measuring device (4);

the walking trolley (1) comprises a frame (11) and a hand push rod (12) which are connected, wherein a nylon wheel (13) is arranged at the bottom of one end of the frame (11), the nylon wheel (13) is arranged on the left steel rail (5), a steel grooved wheel (14) is arranged at the bottom of the other end of the frame (11), and the steel grooved wheel (14) is clamped on the right steel rail (6);

the track gauge measuring scale (2) comprises a bottom plate (21), a first rack (22) and a second rack (23), a middle gear (24) is arranged in the center of the bottom plate (21), a first mounting groove (211) and a second mounting groove (212) are respectively formed in the positions, located on the two sides of the middle gear (24), on the bottom plate (21), the first rack (22) is arranged in the first mounting groove (211), the first rack (22) is meshed with the middle gear (24), a mounting column (221) is arranged at one end of the first rack (22), a first spring (25) is sleeved on the mounting column (221), the first spring (25) is fixed in the first mounting groove (211) through a spring pressing block (26), the other end of the first rack (22) is connected with an electric insulation bearing (27) through an electric insulation bearing seat (222), and scales (223) are arranged on the first rack (22), the second rack (23) is arranged in the second mounting groove (212), the second rack (23) is meshed with the intermediate gear (24), one end of the second rack (23) is provided with a mounting column (221), the mounting column (221) is sleeved with a first spring (25), the first spring (25) is fixed in the second mounting groove (212) through a spring pressing block (26), the other end of the second rack (23) is connected with an electric insulation bearing (27) through an electric insulation bearing seat (222), a first pointer (231) is arranged on the second rack (23), the electric insulation bearings (27) of the first rack (22) and the second rack (23) are respectively contacted with the inner side surfaces of the left steel rail (5) and the right steel rail (6), the bottom plate (21), the first rack (22) and the second rack (23) are sleeved with support frames (28), and the support frames (28) are connected with the frame (11);

prism measuring device (4) include prism (41), prism pole (42) and briquetting (43), the one end of prism pole (42) is connected with prism (41), and the other end of prism pole (42) is connected with briquetting (43), position directly over intermediate gear (24) is fixed on bottom plate (21) in briquetting (43).

2. The railway line center inspection vehicle of claim 1, wherein: the frame (11) is a T-shaped structure, the frame (11) comprises a cross beam (111) and a longitudinal beam (112), nylon wheels (13) are arranged at the bottom of one end of the cross beam (111), the other end of the cross beam (111) is perpendicularly connected with the longitudinal beam (112), the longitudinal beam (112) is located right above a right steel rail (6), steel grooved wheels (14) are arranged at the bottoms of two ends of the longitudinal beam (112), and the hand push rod (12) is connected with the cross beam (111).

3. The railway line center inspection vehicle of claim 1, wherein: the walking trolley (1) further comprises a brake device (15), the brake device (15) comprises a brake handle (150), a brake ram (151) and a brake shoe (152), one end of the brake ram (151) is connected with a brake pull pin (153), the other end of the brake ram (151) is connected with the brake handle (150) through a brake wire (154), the brake handle (150) is connected with a hand push rod (12), the brake ram (151) is hinged with a brake ram base (155), the brake ram base (155) is connected with the top of a brake wheel cover plate (156), the bottom of the brake wheel cover plate (156) is connected with the trolley frame (11), the bottom of the brake wheel cover plate (156) is connected with a wheel bracket (157), the brake pull pin (153) sequentially penetrates through the brake wheel cover plate (156) and the wheel bracket (157) and then is connected with the brake shoe (152), the brake shoe (152) is located right above the steel grooved wheel (14), two ends of the steel grooved wheel (14) are respectively connected with two sides of the wheel support (157), a brake guide pin (158) is arranged on the brake shoe (152), the brake guide pin (158) sequentially penetrates through the wheel support (157) and the brake wheel cover plate (156) and then extends out, and a second spring (159) is sleeved on a position, located between the brake shoe (152) and the wheel support (157), on the brake guide pin (158).

4. The railway line center inspection vehicle of claim 1, wherein: support frame (28) include sliding block and mounting panel (283), the sliding block is connected with mounting panel (283), and mounting panel (283) are connected with frame (11), the sliding block is hollow structure, and the sliding block suit is on bottom plate (21), rack (22), No. two rack (23), the interior top surface of sliding block is provided with the ball, goes up ball and cooperatees with spout (213) of bottom plate (21), rack (22), No. two rack (23) up end, the interior bottom surface of sliding block is provided with down ball (284), and lower ball (284) cooperate with spout (213) of bottom plate (21), rack (22), No. two rack (23) lower extreme face, the two medial surfaces of bottom plate (21), No. one rack (22), No. two rack (23) both sides face bearing kingpin (285).

5. The railway line center inspection vehicle of claim 4, wherein: the sliding block comprises a base (281) and a rack cover plate (282), wherein the base (281) is of a U-shaped structure, lower balls (284) are arranged on the inner bottom surface of the base (281), roller needles (285) are arranged on two inner side surfaces of the base (281), the rack cover plate (282) is connected with the top of the base (281), upper balls are arranged on the bottom surface of the rack cover plate (282), an installation plate (283) is of an L-shaped structure, fixing holes connected with a frame (11) are formed in a transverse plate of the installation plate (283), and a vertical plate of the installation plate (283) is connected with the base (281).

6. The railway line center inspection vehicle of claim 1, wherein: prism measuring device (4) still include universal bulb (44) and universal ball support (45), installation through-hole (451) have been seted up at the middle part of universal ball support (45), and universal ball support (45) are connected with the top of briquetting (43), conical bore (431) coaxial with installation through-hole (451) have been seted up at the top of briquetting (43), universal bulb (44) are including body of rod (441) and universal ball (442), body of rod (441) are connected with prism pole (42), universal ball (442) are located installation through-hole (451), and the bottom of universal ball (442) is located conical bore (431), the side of universal ball support (45) is seted up with the communicating regulation screw hole (452) of installation through-hole (451), install the bolt in regulation screw hole (452), the bolt supports on universal ball (442).

7. The railway line center inspection vehicle of claim 6, wherein: the top of universal ball support (45) is connected with the apron, and the apron suit is on the body of rod (441), No. one apron (46) and No. two apron (47) that the apron set up including the symmetry, semicircular groove (48) have been seted up to a side that apron (46), No. two apron (47) are relative.

8. The railway line center inspection vehicle of claim 1, wherein: the ultrahigh detector (3) is arranged on the frame (11), the ultrahigh detector (3) comprises a gearbox supporting plate (31), a gearbox (32), a balance block (33), a dial plate (34) and a pointer II (35), the bottom of the gearbox supporting plate (31) is connected with the frame (11), the gearbox (32) is arranged on the back of the gearbox supporting plate (31), the balance block (33) is arranged on the back of the gearbox (32), the dial plate (34) is arranged on the front of the gearbox supporting plate (31), a first connecting shaft (321), a second connecting shaft (322) and a third connecting shaft (323) are arranged inside the gearbox (32), one end of the first connecting shaft (321) penetrates through the gearbox (32) and then is connected with the balance block (33), and the other end of the first connecting shaft (321) is connected with the gearbox (32), the outer wall of the first connecting shaft (321) is sleeved with a first gear (324), two ends of the second connecting shaft (322) are connected with the gearbox (32), the outer wall of the second connecting shaft (322) is sleeved with a second gear (325) and a third gear (326), the second gear (325) is meshed with the first gear (324), one end of the third connecting shaft (323) penetrates through the gearbox (32) and then is connected with a second pointer (35), the other end of the third connecting shaft (323) is connected with the gearbox (32), and the outer wall of the third connecting shaft (323) is sleeved with a fourth gear (327) meshed with the third gear (326).

9. The railway line center inspection vehicle of claim 8, wherein: the balance weight (33) is in a double kidney shape, the balance weight (33) comprises a left kidney plate (331), a right kidney plate (332) and a connecting plate (333), the left side and the right side of the connecting plate (333) are respectively connected with the left kidney plate (331) and the right kidney plate (332), the connecting plate (333) is connected with a first connecting shaft (321), and horizontal bubbles (334) are arranged on the left kidney plate (331) and the right kidney plate (332).

10. The railway line center inspection vehicle of claim 8, wherein: the dial plate (34) comprises a dial plate sleeve (341) and a dial plate (342), one end of the dial plate sleeve (341) is inserted on the gearbox supporting plate (31), a transparent protective cover (343) is arranged at the other end of the dial plate sleeve (341), the dial plate (342) is connected with the inner wall of the dial plate sleeve (341), threaded holes (311) are formed in the left side and the right side of the gearbox supporting plate (31), bead positioning screws (312) and adjusting bolts (313) are sequentially arranged in the threaded holes (311), one end of each bead positioning screw (312) is connected with each adjusting bolt (313), an annular groove (344) is formed in the outer wall of the dial plate sleeve (341) in the circumferential direction, and the other end of each bead positioning screw (312) is located in the annular groove (344).

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