High-precision positioning zero-order track ruler

Abstract

The utility model discloses a high-precision positioning zero-order track ruler, which comprises a ruler body, a fixed measuring head arranged at the left end of the ruler body, a movable measuring head arranged at the right end of the ruler body, a measuring assembly arranged in the ruler body and used for measuring, and a self-adaptive assembly, the self-adaptive assembly comprises mounting grooves, moving bins, contact heads and flexible rubber contact pads, the mounting grooves which are uniformly distributed are formed in the lower ends of the opposite inner side faces of the movable measuring head and the fixed measuring head, the moving bins are slidably connected to the interiors of the mounting grooves, the contact heads which are uniformly distributed and can be adjusted in a self-adaptive mode are arranged in the moving bins, and the flexible rubber contact pads are arranged in the contact heads. According to the high-precision positioning zero-order track ruler, the detachable ruler body design is adopted, transportation is convenient, the measuring heads have the self-adaptive adjusting function, adjustment can be conducted according to the uneven condition of the surface of a track, and the measuring accuracy is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to track measurement technical field, concretely is a zero level track gauge of high accuracy positioning. BACKGROUND

[0002] In modern railway transportation system, the high accuracy measurement of track plays a vital role in guaranteeing train safety, stable operation, with the rapid development of railway construction, especially the large-scale construction of high-speed rail and urban rail transit, the geometric size precision of track is required higher and higher, once the track gauge, levelness and other parameters of track appear deviation, will lead to additional vibration and wear of train operation, seriously even threatens the traffic safety, therefore, the accurate track measurement tool becomes the indispensable key equipment in the process of railway construction, maintenance,

[0003] At present, the commonly used track measurement track gauge is mainly divided into traditional mechanical track gauge and electronic track gauge, the traditional mechanical track gauge is usually composed of a ruler body, a fixed measuring head and a movable measuring head, the fixed measuring head is fixed at one end of the ruler body, the movable measuring head is installed on the ruler body through simple mechanical structure (such as slider and guide rail cooperation), and can slide along the ruler body to adjust the measurement distance, when measuring, the operator places the track gauge on the track, so that the fixed measuring head and the movable measuring head are in contact with the two sides of the track respectively, and then the track gauge is read on the ruler body to determine the track gauge, for the measurement of track levelness, generally installs bubble level on the ruler body, judges whether the track is horizontal by observing the position of bubble, if not horizontal, then estimates the horizontal deviation according to experience or simple calculation, the electronic track gauge is relatively complex in structure, in addition to the ruler body, measuring head structure similar to mechanical track gauge, also integrates electronic measuring elements, such as displacement sensor, angle sensor, etc., the displacement sensor is used for accurately measuring the distance change between the measuring heads, so as to obtain the track gauge data, the angle sensor is used for measuring the inclination angle of track to obtain the levelness information, when working, the electronic track gauge transmits the data collected by the sensor to the internal microprocessor, the microprocessor processes and calculates the data, and then displays the measurement result on the display screen, part of the electronic track gauge also has data storage and transmission function, which is convenient for subsequent data processing and analysis.

[0004] However, the prior art has many deficiencies, in terms of transportation, the traditional mechanical gauge and electronic gauge mostly adopt integral structure, the size is large and the shape is fixed, it is very inconvenient when long-distance transportation or storage in narrow space, increases the transportation and storage cost, when facing uneven or worn area of track surface, the two gauges all have the problem of large deviation of measurement results, the measuring head structure of traditional mechanical gauge is simple, lacks self-adaptive adjustment ability, it is difficult to closely fit the uneven or worn track surface, resulting in unstable contact between measuring head and track during measurement, and further generating large measurement error, although the electronic gauge has certain improvement in measurement accuracy, the measuring head also cannot automatically adjust according to the track surface condition, the data collected by the sensor is affected by unstable contact factors, even if the data is processed by the microprocessor, the accuracy of the final measurement result is still greatly discounted, and reliable basis cannot be provided for accurate detection and maintenance of the track, therefore, we propose a zero-level gauge with high-precision positioning. Content of the utility model

[0005] The technical problem to be solved by the utility model is to overcome the defects of the prior art, and provide a zero-level gauge with high-precision positioning, the self-adaptive adjustment of the measuring head improves the measurement accuracy, the detachable design of the gauge body optimizes the transportation convenience, and the problems in the background art can be effectively solved.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a zero-level gauge with high-precision positioning, comprising a gauge body, a fixed measuring head is arranged at the left end of the gauge body, a movable measuring head is arranged at the right end of the gauge body, a measuring assembly for measurement is arranged in the gauge body, and a self-adaptive assembly is further arranged.

[0007] The self-adaptive assembly comprises mounting grooves, moving bins, contact heads and flexible rubber contact pads, the opposite inner side surfaces of the movable measuring head and the fixed measuring head are both provided with uniformly distributed mounting grooves, the moving bins are both connected to the inside of the mounting grooves in a sliding mode, the moving bins are both provided with uniformly distributed contact heads which can be self-adaptively adjusted, the flexible rubber contact pads are arranged between the horizontally adjacent contact heads, the detachable gauge body design is convenient for transportation, and the measuring head has the self-adaptive adjustment function, can be adjusted according to the uneven track surface, and the measurement accuracy is significantly improved.

[0008] Further, the self-adaptive assembly further comprises sliding barrels, sliding columns and springs, the sliding barrels and the springs are symmetrically arranged on the opposite inner side surfaces of the two horizontally adjacent mounting grooves, the springs are all sleeved on the outer arc surfaces of the adjacent sliding barrels, the sliding columns are all connected to the inside of the sliding barrels in a sliding mode, and the outer side surfaces of the moving bins are all fixedly connected with the inner side surfaces of the horizontally adjacent sliding columns and the inner ends of the horizontally adjacent springs, and the surface of the track is self-adaptively fitted.

[0009] Further, the self-adaptive assembly further comprises a sliding groove and a small spring, the opposite inner sides of two transversely adjacent moving bins are each provided with uniformly distributed small springs, the upper and lower inner walls of the moving bin are each provided with a sliding groove, two upper and lower adjacent sliding grooves are each slidably connected with a contact head, the opposite outer ends of two transversely adjacent contact heads are each fixedly connected with the outer end of a small spring located adjacent in type, and the contact head can be automatically attached to the surface of the rail according to the surface of the rail.

[0010] Further, the ruler body comprises side rulers, a middle ruler, guide grooves, connecting plates, bolts and internal thread cylinders, the two side rulers are provided with the middle ruler, the upper side walls of the opposite inner ends of the two side rulers are each provided with a guide groove, the left and right side faces of the middle ruler are each provided with a connecting plate, the connecting plates are located inside the adjacent guide grooves, the middle portions of the connecting plates are each threadedly connected with a bolt, the bottom walls of the side rulers are each provided with an internal thread cylinder, the lower ends of the internal thread cylinders are each threadedly connected with the adjacent internal thread cylinder below, and the measuring head is fixedly connected with the left end of the left side ruler.

[0011] Further, the upper side faces of the right side rulers are each provided with a single-chip microcomputer, the input end of the single-chip microcomputer is electrically connected with an external power supply, and stable control is achieved.

[0012] Further, the bottom wall of the right side ruler is provided with a mounting plate, the right side face of the mounting plate is rotatably connected with a lead screw, the left end of the moving measuring head is located inside the right side ruler and is threadedly connected with the right end of the lead screw, the right side face of the mounting plate is provided with a guide rod, the left end of the moving measuring head is provided with a guide hole, the guide hole is slidably connected with the guide rod, the left side face of the mounting plate is provided with a motor, the output shaft of the motor is fixedly connected with the center of the left end face of the lead screw, and the input end of the motor is electrically connected with the output end of the single-chip microcomputer, so that the moving measuring head can be conveniently moved.

[0013] Further, the measuring assembly is a laser range finder, the laser range finder is installed on the right side face of the mounting plate, the input end of the laser range finder is electrically connected with the output end of the single-chip microcomputer, and measurement is facilitated.

[0014] Compared with the prior art, the high-precision positioning zero-level track gauge has the following advantages:

[0015] 1. High measurement accuracy: the contact head and the flexible rubber contact pad in the self-adaptive assembly are designed to enable the measuring head to automatically attach to the rail head with different degrees of wear, effectively reducing measurement errors caused by surface defects of the rail, and the coordinated action of the sliding barrel, the sliding column, the spring and the sliding groove and the small spring enables the moving bin and the contact head to be self-adaptively adjusted according to the unevenness of the surface of the rail, greatly improving the accuracy of measurement.

[0016] 2. The detachable structure has obvious advantages: the side ruler and the middle ruler are connected through the guide groove, the connecting plate and the bolt, and the detachable structure that the inner threaded barrels of the bottom walls of the side rulers are connected with each other in a threaded mode, so that the volume of the ruler after being detached is greatly reduced, the ruler is convenient to carry, and can be easily placed in long-distance transportation or narrow storage space, and the transportation cost and the storage difficulty are effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is a structural schematic view of the utility model side ruler partial section;

[0019] Figure 3 It is a structural schematic view of the utility model C place amplification;

[0020] Figure 4 It is a structural schematic view of the utility model B place amplification;

[0021] Figure 5 It is a structural schematic view of the utility model dynamic measuring head partial section;

[0022] Figure 6 It is a structural schematic view of the utility model dynamic measuring head partial section;

[0023] Figure 7 It is a structural schematic view of the utility model C place amplification.

[0024] In the drawing: 1, ruler body; 11, side ruler; 12, middle ruler; 13, guide groove; 14, connecting plate; 15, bolt; 16, inner threaded barrel; 2, self-adapting assembly; 21, installation groove; 22, sliding barrel; 23, sliding column; 24, moving bin; 25, spring; 26, sliding groove; 27, contact head; 28, small spring; 29, flexible rubber contact pad; 3, fixed measuring head; 4, dynamic measuring head; 41, guide hole; 5, installation plate; 6, screw rod; 7, guide rod; 8, laser range finder; 9, single-chip microcomputer; 10, motor. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Please refer to Figures 1-7The embodiment provides a technical scheme: a zero-level rod gauge with high-precision positioning, which comprises a gauge body 1, a left end of the gauge body 1 is provided with a fixed measuring head 3, a right end of the gauge body 1 is provided with a movable measuring head 4, the inside of the gauge body 1 is provided with a measuring assembly for measurement, the gauge body 1 comprises side gauges 11, a middle gauge 12, guide grooves 13, connecting plates 14, bolts 15 and internal thread cylinders 16, the middle gauge 12 is arranged between the two side gauges 11, the upper side walls of the opposite inner ends of the two side gauges 11 are each provided with the guide groove 13, the left and right side surfaces of the middle gauge 12 are each provided with the connecting plate 14, the connecting plate 14 is located in the inside of the adjacent guide groove 13, the middle part of the connecting plate 14 is screw-connected with the bolt 15, the bottom wall of the side gauge 11 is provided with the internal thread cylinder 16, the lower end of the internal thread cylinder 16 is screw-connected with the adjacent internal thread cylinder 16 on the lower side, the connecting plate 14 on the left and right side surfaces of the middle gauge 12 is located in the guide groove 13 on the upper side wall of the opposite inner end of the side gauge 11, the connection between the middle gauge 12 and the side gauge 11 can be ensured firm by tightening the bolt 15, the relative displacement in the measurement process is effectively prevented, the internal thread cylinders 16 on the bottom walls of the side gauges 11 are screw-connected with each other, the overall rigidity of the gauge body 1 is enhanced, the deformation of the gauge body caused by external force in the measurement process is reduced, the measurement accuracy and reliability are ensured, meanwhile, the detachable gauge body structure design facilitates the carrying and transportation of the rod gauge, the applicability of the rod gauge in actual work is improved, the transportation is facilitated, the fixed measuring head 3 is fixedly connected with the left end of the left side gauge 11, the upper side surfaces of the right side gauges 11 are each provided with a single-chip microcomputer 9, the input end of the single-chip microcomputer 9 is electrically connected with an external power supply, the bottom wall of the right side gauge 11 is provided with a mounting plate 5, the right side surface of the mounting plate 5 is rotatably connected with a lead screw 6, the left end of the movable measuring head 4 is located in the inside of the right side gauge 11 and screw-connected with the right end of the lead screw 6, the right side surface of the mounting plate 5 is provided with a guide rod 7, the left end of the movable measuring head 4 is provided with a guide hole 41, the guide hole 41 is slidably connected with the guide rod 7, the left side surface of the mounting plate 5 is provided with a motor 10, the output shaft of the motor 10 is fixedly connected with the center of the left end surface of the lead screw 6, the input end of the motor 10 is electrically connected with the output end of the single-chip microcomputer 9, the measuring assembly is a laser range finder 8, the laser range finder 8 is installed on the right side surface of the mounting plate 5, the input end of the laser range finder 8 is electrically connected with the output end of the single-chip microcomputer 9, and the self-adapting assembly 2 is further included.

[0027] The adaptive assembly 2 comprises the mounting groove 21, the moving bin 24, the contact head 27 and the flexible rubber contact pad 29, the opposite inner side lower ends of the fixed measuring head 3 and the movable measuring head 4 are provided with the uniformly distributed mounting grooves 21, the interiors of the mounting grooves 21 are slidably connected with the moving bins 24, the interiors of the moving bins 24 are provided with the uniformly distributed self-adaptive contact heads 27, the flexible rubber contact pads 29 are arranged between the transversely adjacent contact heads 27, the adaptive assembly 2 further comprises the sliding barrel 22, the sliding column 23 and the spring 25, the sliding barrels 22 and the springs 25 are symmetrically arranged on the opposite inner sides of the two adjacent mounting grooves 21, the springs 25 are sleeved on the outer curved surfaces of the adjacent sliding barrels 22, the interiors of the sliding barrels 22 are slidably connected with the sliding columns 23, the outer sides of the moving bins 24 are fixedly connected with the inner sides of the transversely adjacent sliding columns 23 and the inner ends of the transversely adjacent springs 25, the adaptive assembly 2 further comprises the sliding groove 26 and the small spring 28, the opposite inner sides of the two transversely adjacent moving bins 24 are provided with the uniformly distributed small springs 28, the upper and lower inner walls of the moving bin 24 are provided with the sliding grooves 26, the two upper and lower adjacent sliding grooves 26 are slidably connected with the contact heads 27, the opposite outer ends of the two transversely adjacent contact heads 27 are fixedly connected with the outer ends of the adjacent small springs 28, when the track gauge works, it is placed on the track, the fixed measuring head 3 and the movable measuring head 4 are in contact with the two sides of the track, at this time, the adaptive assembly 2 starts to work, the moving bin 24 in the mounting groove 21 can move transversely under the cooperation of the sliding barrel 22, the sliding column 23 and the spring 25 according to the surface condition of the track, the uniformly distributed contact heads 27 in the moving bin 24 can be self-adaptively adjusted according to the unevenness of the track surface under the action of the sliding groove 26 and the small spring 28, when the track surface is uneven or undulates, the spring 25 can stretch or contract according to the stress condition, push the sliding column 23 to slide in the sliding barrel 22, and then drive the moving bin 24 to move transversely, so that it is better attached to the track, the flexible rubber contact pad 29 between the transversely adjacent contact heads 27 further ensures the tightness of the contact, at the same time, the flexible rubber contact pad 29 between the transversely adjacent contact heads 27 plays the role of buffering and filling the gap, avoids the measurement error caused by the unevenness of the track surface, greatly improves the measurement accuracy and stability, when it is necessary to adjust the position of the movable measuring head 4 to adapt to different track gauges, the single-chip microcomputer 9 receives the control instruction, sends a signal to the motor 10, the motor 10 starts to drive the lead screw 6 to rotate, since the left end of the movable measuring head 4 is threadedly connected with the right end of the lead screw 6, and the guide hole 41 in the left end of the movable measuring head 4 is in sliding cooperation with the guide rod 7, the movable measuring head 4 can stably move left and right under the drive of the lead screw 6, so that the adjustment of the track gauge is realized, the laser range finder 8 in the measuring assembly starts to work under the control of the single-chip microcomputer 9, the laser range finder 8 emits a laser beam, the laser beam is received after being reflected by the left end of the movable measuring head 4, the time of the laser beam back and forth is measured, the distance between the laser range finder 8 and the movable measuring head 4 is calculated according to the principle that the speed of light is constant, the laser range finder 8 transmits the measurement data to the single-chip microcomputer 9,The single-chip microcomputer 9 processes and analyzes the data, and finally obtains the relevant parameters of the track.

[0028] The working principle of the zero-level track gauge with high-precision positioning provided by the utility model is as follows: when the track gauge works, it is first placed on the track, and the fixed measuring head 3 and the movable measuring head 4 are in contact with the two sides of the track, at this time, the self-adaptive assembly 2 starts to play a role, the moving bin 24 in the mounting groove 21 can move horizontally under the cooperation of the sliding barrel 22, the sliding column 23 and the spring 25 according to the surface condition of the track, the contact heads 27 uniformly distributed in the moving bin 24 will be self-adaptively adjusted under the action of the sliding groove 26 and the small spring 28 according to the unevenness of the track surface, when the track surface is uneven or undulates, the spring 25 will stretch or contract according to the stress condition, push the sliding column 23 to slide in the sliding barrel 22, and then drive the moving bin 24 to move horizontally, so that it is better attached to the track, the flexible rubber contact pads 29 between the horizontally adjacent contact heads 27 further ensure the tightness of the contact, at the same time, the flexible rubber contact pads 29 between the horizontally adjacent contact heads 27 play the role of buffering and filling the gap, avoid the measurement error caused by the unevenness of the track surface, and greatly improve the accuracy and stability of the measurement, when it is necessary to adjust the position of the movable measuring head 4 to adapt to different track gauges, the single-chip microcomputer 9 sends a signal to the motor 10 after receiving the control instruction, the motor 10 starts to drive the lead screw 6 to rotate, since the left end of the movable measuring head 4 is threadedly connected with the right end of the lead screw 6, and the guide hole 41 at the left end of the movable measuring head 4 is in sliding cooperation with the guide rod 7, the movable measuring head 4 will move left and right stably under the drive of the lead screw 6, so that the adjustment of the track gauge is realized, the laser range finder 8 in the measuring assembly starts to work under the control of the single-chip microcomputer 9, the laser range finder 8 emits a laser beam, the laser beam is reflected by the left end of the movable measuring head 4 and is received, the time of the laser beam back and forth is measured, and the distance between the laser range finder 8 and the movable measuring head 4 is calculated according to the principle that the speed of light is constant, the laser range finder 8 transmits the measurement data to the single-chip microcomputer 9, the single-chip microcomputer 9 processes and analyzes the data, and finally obtains the relevant parameters of the track, wherein the connecting plates 14 on the left and right sides of the intermediate ruler 12 are located in the guide grooves 13 on the upper side walls of the relatively inner side ends of the side rulers 11, by tightening the bolts 15, the connection between the intermediate ruler 12 and the side rulers 11 is firm, the relative displacement in the measurement process is effectively prevented, the internal threaded cylinders 16 of the bottom walls of the side rulers 11 are threadedly connected with each other, this connection mode enhances the overall rigidity of the ruler body 1, reduces the deformation of the ruler body caused by external force in the measurement process, and guarantees the accuracy and reliability of the measurement, at the same time, the detachable ruler body structure design facilitates the carrying and transportation of the track gauge, and improves the applicability thereof in actual work.

[0029] It is worth noting that the laser range finder 8 disclosed in the above embodiment can be of model DISTO D510, the motor 10 can be of model PK266-02A, and the single-chip microcomputer 9 can be of model S7-1200, and the single-chip microcomputer 9 controls the laser range finder 8 and the motor 10 to work by using a method commonly used in the prior art.

[0030] The above only describes the embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields by using the content of the present application specification and drawings, are also included in the patent protection range of the present application.

Claims

1. A high-precision positioning zero-level rod, comprising a rod body (1), a left end of the rod body (1) is provided with a fixed measuring head (3), a right end of the rod body (1) is provided with a movable measuring head (4), and the inside of the rod body (1) is provided with a measuring assembly for measurement, characterized in that: It also includes an adaptive component (2); The adaptive component (2) includes a mounting groove (21), a moving bin (24), a contact head (27) and a flexible rubber contact pad (29), the opposite inner side surface of the moving head (4) and the fixed head (3) is provided with a uniform distribution of mounting grooves (21), the inside of the mounting groove (21) is slidably connected with the moving bin (24), the inside of the moving bin (24) is provided with a uniform distribution of self-adaptive adjustable contact heads (27), and flexible rubber contact pads (29) are arranged between the transversely adjacent contact heads (27).

2. A high-precision positioning zero-level rod according to claim 1, characterized in that: The adaptive component (2) further comprises a sliding barrel (22), a sliding column (23) and a spring (25), the sliding barrel (22) and the spring (25) are symmetrically arranged on the opposite inner side surfaces of the two mounting grooves (21) adjacent in the transverse direction, the spring (25) is sleeved on the outer arc surface of the adjacent sliding barrel (22), the sliding column (23) is slidably connected in the sliding barrel (22), and the outer side surface of the moving bin (24) is fixedly connected with the inner side surface of the sliding column (23) adjacent in the transverse direction and the inner end of the spring (25) adjacent in the transverse direction.

3. The zeroth order ruler of high precision positioning according to claim 1, characterized in that: The adaptive component (2) further comprises a sliding groove (26) and a small spring (28), the opposite inner side surfaces of the two moving bins (24) adjacent in the transverse direction are provided with a uniform distribution of small springs (28), the upper and lower inner walls of the moving bin (24) are provided with sliding grooves (26), the contact heads (27) are slidably connected between the two upper and lower adjacent sliding grooves (26), and the outer ends of the two contact heads (27) adjacent in the transverse direction are fixedly connected with the outer ends of the small springs (28) adjacent in the model.

4. The zeroth order ruler of high precision positioning according to claim 1, characterized in that: The ruler body (1) comprises a side ruler (11), an intermediate ruler (12), a guide groove (13), a connecting plate (14), a bolt (15) and an internal thread cylinder (16), the intermediate ruler (12) is arranged between the two side rulers (11), the upper side wall of the opposite inner side end of the two side rulers (11) is provided with a guide groove (13), the left and right side surfaces of the intermediate ruler (12) are provided with connecting plates (14), the connecting plates (14) are located in the inside of the adjacent guide grooves (13), the middle part of the connecting plate (14) is threadedly connected with the bolt (15), the bottom wall of the side ruler (11) is provided with the internal thread cylinder (16), the lower end of the internal thread cylinder (16) is threadedly connected with the lower adjacent internal thread cylinder (16), and the fixed head (3) is fixedly connected with the left end of the left side ruler (11).

5. A high-precision positioned zeroth-order scale according to claim 4, characterized in that: The upper side surface of the right side ruler (11) is respectively provided with a single-chip microcomputer (9), and the input end of the single-chip microcomputer (9) is electrically connected with an external power supply.

6. A high-precision positioned zeroth-order scale according to claim 5, characterized in that: The bottom wall of the right side caliper (11) is provided with a mounting plate (5), the right side surface of the mounting plate (5) is rotationally connected with a lead screw (6), the left end of the moving measuring head (4) is located inside the right side caliper (11) and is threadedly connected with the right end of the lead screw (6), the right side surface of the mounting plate (5) is provided with a guide rod (7), the left end of the moving measuring head (4) is provided with a guide hole (41), the guide hole (41) is slidingly connected with the guide rod (7), the left side surface of the mounting plate (5) is mounted with a motor (10), the output shaft of the motor (10) is fixedly connected with the center of the left end surface of the lead screw (6), and the input end of the motor (10) is electrically connected with the output end of the single-chip microcomputer (9).

7. A high-precision positioned zeroth-order scale according to claim 6, characterized in that: The measuring assembly is a laser range finder (8), the laser range finder (8) is mounted on the right side surface of the mounting plate (5), and the input end of the laser range finder (8) is electrically connected with the output end of the single-chip microcomputer (9).

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