CN216717394U

CN216717394U - Wheel train and pipeline positioning instrument

Info

Publication number: CN216717394U
Application number: CN202220068718.4U
Authority: CN
Inventors: 宋华; 李建军; 武璐
Original assignee: Guangdong Zero Bias Technology Co ltd
Current assignee: Guangdong Zero Bias Technology Co ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-06-10
Anticipated expiration: 2032-01-11

Abstract

The application relates to a train and pipeline locater relates to pipeline measuring device's field, and it includes: the rollers are used for circumferentially contacting and abutting against the inner wall of the pipeline to be tested; the pressure component enables the roller to keep contact with and press against the inner wall of the pipeline; the two groups of sliding parts slide along the axial direction of the pipeline to be tested, the two groups of sliding parts are respectively positioned at two ends of the roller along the axial direction of the pipeline to be tested, and the one group of sliding parts comprises a plurality of sliding parts; the sliding piece is hinged with the roller through a supporting arm. This application makes the atress of train more be favorable to its removal in the pipeline to improve the trafficability characteristic of pipeline locater.

Description

Wheel train and pipeline positioning instrument

Technical Field

The application relates to the field of pipeline measuring devices, in particular to a gear train and a pipeline positioning instrument.

Background

With the modern construction and development of cities, underground pipeline network systems are developed day by day, various pipelines such as electric power, gas, water supply and drainage, rain sewage and the like are staggered together, and cobweb is densely distributed and complicated. The underground pipeline inertial positioning instrument adopts an inertial navigation technology and generates a three-dimensional coordinate graph of the central axis of the underground pipeline by passing through the underground pipeline to be detected.

The underground pipeline inertia positioning instrument is connected with a roller which is contacted with the inner wall of the pipeline and is abutted against the inner wall of the pipeline through a supporting arm, the roller rotates along with the movement in the pipeline, the moving resistance is reduced, and meanwhile, the moving distance is measured according to the number of turns of the roller rotation. The existing roller is connected with two supporting arms, one end of one supporting arm, which is far away from the roller, is hinged at a fixed position, and the other end of the other supporting arm, which is far away from the roller, is hinged with a sliding pair capable of sliding.

In view of the above-mentioned related art, the inventor believes that there are disadvantages in that the conventional train moves in the pipe and the train moving passing performance is low when the pipe meets an obstacle.

SUMMERY OF THE UTILITY MODEL

The application provides a train and pipeline positioning instrument for the atress of train is more favorable to its removal in the pipeline to improve pipeline positioning instrument's trafficability characteristic.

In a first aspect, the present application provides a gear train, which adopts the following technical solution:

a wheel train, comprising: the rollers are used for circumferentially contacting and abutting against the inner wall of the pipeline to be tested;

the pressure component enables the roller to keep contact with the inner wall of the pipeline and press the inner wall of the pipeline;

the two groups of sliding parts slide along the axial direction of the pipeline to be tested, the two groups of sliding parts are respectively positioned at two ends of the roller along the axial direction of the pipeline to be tested, and the one group of sliding parts comprises a plurality of sliding parts;

the sliding piece is hinged with the roller through a supporting arm.

By adopting the technical scheme, after the wheel train is placed in the pipeline, the pressure assembly exerts pressure on the sliding parts, and the two sliding parts enable the roller wheels to be pressed against the inner wall of the pipeline through the supporting arms, so that the centering property of the wheel train is ensured;

when the wheel train moves forwards, the wheel train is subjected to the friction force between the roller and the pipeline and the blocking effect when the roller moves to be in contact with an obstacle in the pipeline, the two sliding parts synchronously move backwards, the acting force applied by the pressure assembly to the sliding part close to the moving direction is reduced, and the acting force applied by the sliding part far away from the moving direction is increased; so that the included angle between the two supporting arms on the same roller is increased, the wheel train passes through obstacles conveniently, and the passing performance of the wheel train is improved;

the gear train carries out reciprocal not falling the head measurement to the pipeline that awaits measuring, drives the gear train promptly and follows the positive direction and remove to the terminal after, directly follow the terminal and when pulling back the starting point along the opposite direction, because the gear train both ends all set up the slider, for the unilateral sets up the slider, lie in the slip pair direction of the gear train of instrument motion direction front side and the gear train frictional force direction all the time the same, be favorable to the slip pair motion, improve the instrument trafficability characteristic.

Optionally, the pressure assembly includes two pressure springs, and the two pressure springs are respectively contacted with the end faces of the two sets of sliding parts, which are opposite to each other, and pressed against each other.

By adopting the technical scheme, the pressure spring applies acting force of opposite movement of the two sliding parts to the sliding parts.

Optionally, one end of each of the two pressure springs abuts against the sliding part, and the other end of each of the two pressure springs is provided with a pressure regulating part for regulating the pressure of the pressure spring.

Through adopting above-mentioned technical scheme, the pressure regulating part is kept away from the limited of the position of slider one end to the pressure spring, when the effort of pressure spring to the slider needs to be adjusted, realizes through the relative position of adjusting nut and pressure end.

Optionally, a limiting assembly is arranged between the two sliding parts connected with the same roller, and the limiting assembly enables a gap between the two sliding parts to be within a fixed range.

By adopting the technical scheme, the spacing assembly limits the distance between the two sliding parts, so that the included angle between the two supporting arms is 0-180 degrees, and the included angle between the supporting arms is prevented from being larger than or equal to 180 degrees.

Optionally, the limiting assembly includes a limiting rod and two limiting pieces; the limiting rod is connected with the two sliding parts at the two ends of the same roller in a sliding manner; the limiting parts are fixed on the limiting rods, and the two sliding parts at the two ends of the same roller are positioned between the two axial limiting parts on the same limiting rod.

By adopting the technical scheme, the two sliding parts on the same roller wheel slide on the limiting rod, and when the sliding parts move to be in contact with the limiting part, the sliding parts are limited by the limiting part to stop moving, so that the sliding parts can only slide in the fixed area on the limiting rod.

Optionally, the device further comprises a spindle, and the sliding piece is connected with the spindle in a sliding manner.

Through adopting above-mentioned technical scheme, realize the slider slip through the main shaft.

Optionally, the set of slides comprises one slide, one slide being articulated to all support arms along the same end of the spindle.

Through adopting above-mentioned technical scheme, two sliders just can realize with all being connected between the support arm.

Optionally, a circumferential limiting mechanism is arranged on the sliding member, and the circumferential limiting mechanism limits the sliding member to rotate around the sliding axis of the sliding member.

Through adopting above-mentioned technical scheme, circumference stop gear limits the rotation of slider along main shaft circumference, avoids appearing passing the cable of slider and the slider condition that takes place to twine.

Optionally, the circumferential limiting mechanism includes a guide groove and a guide pin, the guide groove is formed in the side surface of the main shaft, the guide groove is arranged along the sliding direction of the sliding member, and the guide pin is fixed with the sliding member and inserted into the guide groove.

By adopting the technical scheme, the guide pin moves in the guide groove, the sliding piece is guided to slide along the fixed sliding track, and the sliding piece is blocked from rotating around the axis of the main shaft.

In a second aspect, the present application provides a pipeline positioning apparatus, which adopts the following technical scheme:

a pipeline positioning instrument comprises a main body and wheel trains connected to two ends of the main body respectively.

In summary, the present application includes at least one of the following beneficial technical effects:

1. after the gear train is placed in the pipeline, the pressure assembly exerts pressure on the sliding parts, and the two sliding parts enable the roller wheels to be pressed against the inner wall of the pipeline through the supporting arms, so that the centering performance of the gear train is guaranteed; when the wheel train moves forwards, the wheel train is subjected to the friction force between the roller and the pipeline and the blocking effect when the roller moves to be in contact with an obstacle in the pipeline, the two sliding parts synchronously move backwards, the acting force applied by the pressure assembly to the sliding part close to the moving direction is reduced, and the acting force applied by the sliding part far away from the moving direction is increased; so that the included angle between the two supporting arms on the same roller is increased, the wheel train passes through obstacles conveniently, and the passing performance of the wheel train is improved;

2. the gear train carries out reciprocal not falling the head measurement to the pipeline that awaits measuring, drives the gear train promptly and follows the positive direction and remove to the terminal after, directly follow the terminal and when pulling back the starting point along the opposite direction, because the gear train both ends all set up the slider, for the unilateral sets up the slider, lie in the slip pair direction of the gear train of instrument motion direction front side and the gear train frictional force direction all the time the same, be favorable to the slip pair motion, improve the instrument trafficability characteristic.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic structural diagram of a train wheel in the embodiment;

FIG. 3 is a schematic sectional view of the wheel train in the embodiment.

Description of reference numerals: 1. a roller; 2. a support arm; 3. a slider; 4. a pressure assembly; 41. a pressure spring; 42. adjusting a pressing piece; 5. a limiting component; 51. a limiting rod; 52. a limiting member; 53. a shaft shoulder; 6. a main shaft; 7. a circumferential limiting mechanism; 71. a guide groove; 72. a guide pin; 8. a main body.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a wheel train. Referring to fig. 1, a wheel system includes three rollers 1 contacting and pressing the inner wall of the pipe in the circumferential direction, and the number of the rollers 1 may be two or four in other embodiments. Every gyro wheel 1 goes up to articulate there are two support arms 2, and support arm 2 is coaxial with the axis of rotation of gyro wheel 1 with the articulated shaft of gyro wheel 1. The one end that gyro wheel 1 was kept away from to two support arms 2 articulates respectively has a set of slider, and every slider of group all follows the pipeline endwise slip that awaits measuring, and every slider of group includes a slider 3 in this embodiment, and three support arm 2 of being connected with the one end is articulated on a slider 3 and three gyro wheel 1. The sliding member 3 is further provided with a pressure assembly 4, and the pressure assembly 4 continuously exerts an action on the sliding member 3 to reduce the gap between the two sliding members 3.

In another embodiment, each set of sliding parts is provided with a plurality of sliding parts corresponding to the supporting arms 2 one by one, and the movement of the sliding parts 3 connected to the same roller 1 does not drive the movement of the sliding parts 3 connected to the other rollers 1. The gyro wheel 1 is provided with threely, and three gyro wheel 1 all sets up support arm 2 along the pipeline axial both ends that await measuring, is connected with a slider 3 on the support arm 2 respectively, and same group's slider is three slider 3, and slider 3 is provided with six this moment altogether.

When the existing pipeline positioning instrument wheel system moves in a pipeline and meets an obstacle in the pipeline, the motion direction of a sliding pair of the wheel system positioned on the front side of the motion direction of an instrument is opposite to the friction direction of the wheel system, so that the motion of a sliding piece is blocked, and the trafficability of the instrument is reduced. When this application scheme pipeline locater train removes in the pipeline: the moving direction of the slider 3 positioned on the front side of the instrument moving direction is always the same as the friction direction of the slider 3, which is beneficial to improving the passing performance of the slider 3.

Referring to fig. 2 and 3, in this embodiment, in order to realize the sliding of the sliding member 3, the wheel train further includes a spindle 6, the sliding member 3 is sleeved on the spindle 6 and slidably connected with the spindle 6, hinge holes respectively hinged with the three support arms 2 are provided on the sliding member 3, and hinge shafts of the three support arms 2 and the sliding member 3 are parallel to the rotation shafts of the corresponding rollers 1.

In this embodiment, the pressure assembly 4 includes two pressure springs 41 and two pressure adjusting members 42, the pressure adjusting members 42 are nuts in this embodiment, one end of each of the two pressure springs 41 is fixed, the other end of each of the two pressure springs 41 contacts and presses an end surface of each of the two sliding members 3 opposite to each other, and the pressure adjusting members 42 fix the position of one end of each of the pressure springs 41. In the present embodiment, the fixing of the end of the pressure spring 41 by the pressing member 42 means: when the wheel train is measured, the position of one end of the compressed spring 41 is fixed and is not changed.

In this embodiment, the main shaft 6 includes a polished rod portion for guiding the sliding of the slider 3 and pressure adjusting portions at both ends of the polished rod portion, the pressure adjusting portions being integrally formed with the polished rod portion, and the outer side surfaces of the pressure adjusting portions being provided with external threads. The two compression springs 41 are sleeved on the main shaft 6, one ends of the two compression springs 41, which are opposite to the sliding part 3, are abutted against the pressure regulating parts 42, in the embodiment, the two pressure regulating parts 42 are respectively in threaded connection with pressure ends at two ends of the main shaft 6, the initial compression amount of the compression springs 41 is regulated by regulating the connecting positions of the pressure regulating parts 42 and the main shaft 6, the abutting acting force between the roller 1 and the side surface of the pipeline is regulated, and the connecting position of the pressure regulating parts 42 and the main shaft 6 is unchanged after the position regulation is completed.

In another embodiment, the pressure assembly 4 includes a tension spring, and two ends of the tension spring are respectively connected and fixed with the two sliders 3. In another embodiment, the end of the two compression springs 41 facing away from the sliding element 3 presses against a fixed block fixed to the spindle 6. In another embodiment, the pressure assembly 4 includes a tension spring, and two ends of the tension spring are respectively connected and fixed with the two supporting arms 2 on the same roller 1.

In order to limit the distance between the two sliding parts 3, the included angle between the two supporting arms 2 is within 0-180 degrees, the included angle between the supporting arms 2 is prevented from being larger than or equal to 180 degrees, a limiting component 5 is arranged between the two sliding parts 3, and the limiting component 5 enables the gap between the two sliding parts 3 to be within a fixed range. The limiting assembly 5 includes a limiting rod 51 and two limiting members 52, and in this embodiment, three sets of limiting assemblies 5 are arranged at intervals along the circumferential direction of the main shaft 6.

Sliding round holes with axes parallel to the spindle 6 are formed in the sliding pieces 3, the sliding round holes correspond to the limiting rods 51, and the limiting rods 51 penetrate through the corresponding sliding round holes in the two sliding pieces 3 to extend out. The limiting member 52 is a bolt in threaded connection with the limiting rod 51, and when the sliding member 3 slides on the limiting rod 51 to contact with the limiting member, the limiting component 5 blocks the sliding member 3 from continuing to slide on the spindle 6.

In the present embodiment, the stopper 52 is screwed to the stopper rod 51 in the axial direction thereof, and the nut portion of the stopper 52 restricts the sliding movement of the slider 3. In another embodiment, the limiting member 52 is connected to the limiting rod 51 along the radial direction of the limiting rod 51.

In this embodiment, the stop assembly 5 further comprises a shoulder 53 disposed on the spindle 6, the shoulder 53 being located between the two slides 3. The shoulder 53 is provided only one in the present embodiment, and both ends of the shoulder 53 in the axial direction of the spindle 6 respectively limit the sliding range of the slider 3.

As an alternative, in order to avoid that the rotation of the slider 3 around its own axis during sliding affects the cables passing between the support arms 2, the slider 3 is provided with a circumferential stop mechanism 7, the circumferential stop mechanism 7 limiting the rotation of the slider 3 around its sliding axis. The circumferential limiting mechanism 7 comprises two guide grooves 71 and a guide pin 72 which are arranged on the outer side of the spindle 6, the guide grooves 71 are oblong grooves with the length being arranged along the axial direction of the spindle 6, the guide pin 72 is in threaded connection with the sliding part 3, the guide pin 72 is arranged along the radial direction of the sliding part 3, the guide pin 72 penetrates through the sliding part 3 and then extends into the guide grooves 71, and the sliding part 3 is limited by the guide pin 72 to slide along the axial direction of the spindle 6.

The implementation principle of a gear train in the embodiment of the application is as follows:

after the gear train is placed in a pipeline, because the pressure spring 41 exerts a pressure effect on the sliding parts 3, the two sliding parts 3 enable the roller 1 to be pressed against the inner wall of the pipeline through the supporting arms 2, a steel wire or other traction devices are used for exerting an acting force on the main shaft 6 to enable the main shaft 6 to move, and meanwhile, the centering performance of the gear train is guaranteed;

when the wheel system moves forwards, the wheel system is subjected to the friction force between the roller 1 and the pipeline and the blocking action when the roller 1 moves to be in contact with an obstacle in the pipeline, the two sliding parts 3 synchronously move backwards, the acting force applied by the pressure assembly 4 to the sliding part 3 close to the moving direction is reduced, and the acting force applied by the sliding part 3 far away from the moving direction is increased; so that the included angle between the two supporting arms 2 on the same roller 1 is increased, the wheel train passes through obstacles conveniently, and the passing performance of the wheel train is improved;

the gear train carries out reciprocal not falling the head measurement to the pipeline that awaits measuring, drives the gear train promptly and removes to the terminal point back from the starting point along the positive direction, directly when pulling back the starting point along the opposite direction from the terminal point, because the gear train both ends all set up slider 3, for unilateral setting up slider 3, the sliding pair direction of motion that is located the gear train of instrument motion direction front side is the same all the time with gear train frictional force direction, is favorable to the sliding pair motion, improves the instrument trafficability characteristic.

The embodiment of the application also discloses a pipeline mileage measuring instrument. Referring to fig. 1, a pipeline mileage measuring instrument includes a main body 8, two ends of the main body 8 are respectively connected with a wheel train, and an end of the main body 8 is coaxially connected and fixed with a main shaft 6.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A wheel train, comprising:

a plurality of rollers (1) which are used for being contacted and pressed with the inner wall of the pipeline to be measured in the circumferential direction;

the pressure component (4) enables the roller (1) to keep contact with the inner wall of the pipeline and press the inner wall of the pipeline;

the two groups of sliding parts slide along the axial direction of the pipeline to be tested, the two groups of sliding parts are respectively positioned at two ends of the roller (1) along the axial direction of the pipeline to be tested, and the one group of sliding parts comprises a plurality of sliding parts (3);

the sliding part (3) is hinged with the roller (1) through a supporting arm (2).

2. A gear train according to claim 1, wherein the pressure assembly (4) comprises two compression springs (41), the two compression springs (41) being in contact with opposite end surfaces of the two sets of sliding members respectively.

3. A gear train according to claim 2, characterized in that two of said compression springs (41) are pressed against the slide (3) at one end and provided with a pressure regulating member (42) for regulating the pressure of the compression springs (41) at the other end.

4. A gear train according to claim 2, characterized in that between two sliding elements (3) connected to the same roller (1) there is provided a limiting assembly (5), the limiting assembly (5) keeping the gap between the two sliding elements (3) within a fixed range.

5. A gear train according to claim 4, wherein the limiting assembly (5) comprises a limiting rod (51) and two limiting members (52);

the limiting rod (51) is connected with the two sliding parts (3) at the two ends of the same roller (1) in a sliding way;

the limiting pieces (52) are fixed on the limiting rods (51), and the two sliding pieces (3) at two ends of the same roller (1) are positioned between the two axial limiting pieces (52) on the same limiting rod (51).

6. A gear train according to any one of claims 1-5, further comprising a spindle (6), wherein the slide (3) is slidably connected to the spindle (6).

7. A gear train according to claim 6, wherein the set of slides comprises one slide (3), one slide (3) being articulated to all the support arms (2) along the same end of the spindle (6).

8. A gear train according to claim 7, characterized in that the sliding element (3) is provided with circumferential stop means (7), which circumferential stop means (7) limit the rotation of the sliding element (3) about its sliding axis.

9. A gear train according to claim 8, wherein the circumferential limiting mechanism (7) comprises a guide groove (71) and a guide pin (72) which are opened on the side surface of the main shaft (6), the guide groove (71) is arranged along the sliding direction of the sliding member (3), and the guide pin (72) is fixed with the sliding member (3) and is inserted into the guide groove (71).

10. A pipe positioner comprising a wheel train according to any one of claims 1 to 9.