CN113790332B

CN113790332B - Bidirectional mileage wheel train and pipeline detector

Info

Publication number: CN113790332B
Application number: CN202111072732.8A
Authority: CN
Inventors: 宋华; 武璐
Original assignee: Guangdong Zero Bias Technology Co ltd
Current assignee: Guangdong Zero Bias Technology Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2023-02-17
Anticipated expiration: 2041-09-14
Also published as: CN113790332A

Abstract

The application relates to a bidirectional mileage wheel train and a pipeline detector, which relate to the field of pipeline measuring equipment, the device comprises a body, a first connecting piece and a second connecting piece, wherein the body is used for carrying a mileage extension part to move in a pipeline to be tested; the mileage extension part comprises a mileage wheel and an extension mechanism; the mileage wheel is provided with two mileage wheels which are respectively distributed on two sides of the body; the expansion mechanism drives the two mileage wheels to move along the direction far away from the body. The application has the effect that the mileage wheel train can move in two directions.

Description

Bidirectional mileage wheel train and pipeline detector

Technical Field

The application relates to the field of pipeline measuring equipment, in particular to a two-way mileage wheel train pipeline detector.

Background

The inertial navigation system is an autonomous navigation system that does not rely on external information, nor radiates energy to the outside. The working environment of the device not only comprises the air and the ground, but also can be underwater. The basic working principle of inertial navigation is based on Newton's law of mechanics, and the acceleration of a carrier in an inertial reference system is measured, integrated with respect to time and transformed into a navigation coordinate system, so as to obtain information such as speed, yaw angle and position in the navigation coordinate system. When the technology is applied to pipeline surveying and mapping, the pipeline is more convenient and accurate to locate.

The underground pipeline inertia locator is a detector which is not affected by electromagnetic interference and burial depth and can accurately measure three-dimensional data of the underground pipeline. The underground pipeline track detector mainly comprises an inertia measuring unit, a mileage measuring unit and a ground processing and displaying system. The inertial measurement unit is a core component of the detecting instrument, and in order to improve the resolving accuracy of the surveying and mapping system, the mileage unit is necessary to measure the actual walking mileage of the positioning instrument. The mileage wheel train in the mileage measuring unit is used for accurately measuring the moving distance, and the mileage wheel of the mileage measuring unit is clung to the pipe wall when in use and moves along with the detecting instrument on the inner wall of the pipeline so as to record mileage.

Aiming at the related technologies, the inventor thinks that the pipeline environment is complex, impurities, welding seams, sludge and the like often exist, in the actual measurement, a part of the detecting instrument is often required to move backwards and then continue to move forwards or pull backwards and take out, but the existing one-way mileage unit cannot realize reverse movement and can be blocked in the pipeline to block the pipeline.

Disclosure of Invention

In order to enable the odometer to move in two directions, the application provides a two-way odometer gear train and a pipeline detector.

In a first aspect, the application provides a bidirectional mileage wheel train, which adopts the following technical scheme:

a bidirectional mileage wheel train comprises a body, a first gear and a second gear, wherein the body is used for carrying a mileage extension part to move in a pipeline to be tested;

a mileage extension part including a mileage wheel and an extension mechanism;

the mileage wheels are at least provided with two mileage wheels distributed outside the body;

the expansion mechanism drives any mileage wheel to move along the direction far away from the body.

Through adopting above-mentioned technical scheme, when two-way mileage train was located the pipeline that awaits measuring, extension mechanism drove the mileage wheel and keeps away from the body and remove to supporting with the pipeline inner wall contact that awaits measuring, when two-way mileage train removed in the pipeline, the mileage wheel rotated, realized the measurement of mileage, when meetting welding seam or arch, extension mechanism drove the mileage wheel and removes, made the mileage wheel be close to the body to the mileage train of being convenient for passes through the welding seam, realizes the two-way movement of mileage train.

Preferably, the expanding mechanism includes: the rotating assemblies are provided with a plurality of groups which correspond to the mileage wheels one by one respectively, one group of rotating assemblies comprise two rotating pieces which are respectively rotatably connected with the same mileage wheel, the rotating pieces are rotatably connected with the body, and the included angle between the two rotating pieces on the group of rotating assemblies is gradually reduced when the two rotating pieces move along the direction of the mileage wheels away from the body;

the extension piece, when the body was located the pipeline inner chamber, the effort that the extension piece applyed to rotating assembly made mileage wheel and pipeline inside wall support and pressed.

Through adopting above-mentioned technical scheme, rotate the piece and be connected with the body rotation, the contained angle that two rotation pieces on same group reduced gradually when the body direction was kept away from to the mileage wheel, and two sets of settings that lie in the body both sides rotation piece guarantee the well effect of deciding of mileage train, and the extension piece applys the effort to the rotation piece, makes the mileage wheel on the rotation piece support with the pipeline inner wall and presses the contact.

Preferably, the length of at least one of the rotatable members on the rotatable assembly increases as the rotatable member is rotated away from the body.

Through adopting above-mentioned technical scheme, through the adjustment of the length of one of them rotation piece, can realize the mileage wheel with rotate the contact and move along keeping away from the body direction.

Preferably, at least one rotating shaft of the rotating assembly, which is connected with the body, moves along the moving direction of the body.

Through adopting above-mentioned technical scheme, when the axis of rotation of one of them rotation piece removed, can realize the mileage wheel with rotate the removal of piece contact along keeping away from the body direction.

Preferably, the expanding mechanism further comprises: the moving shaft slides along the length direction of the body and is connected with the rotating piece to form a rotating pair.

Through adopting above-mentioned technical scheme, the setting of removal axle realizes removing the axle and being located two rotations between two rotation pieces of two sets of rotating assembly respectively and is connected.

Preferably, the device also comprises a sliding connecting piece which slides relative to the body; the body is provided with a countersunk waist-shaped hole for guiding the moving direction of the sliding connecting piece during rotation.

Through adopting above-mentioned technical scheme, can become rolling friction with the sliding friction between removal axle and the body, resistance when reducing sliding connection spare and removing, the removal of sliding connection spare in the pipeline of being convenient for.

Preferably, the expanding mechanism further comprises: the fixed shaft is connected to the fixed position of the body connection and is connected with the rotating piece to form a rotating pair.

Through adopting above-mentioned technical scheme, rotate between piece and the body and rotate through the fixed axle and be connected, connect convenient stability.

Preferably, the extension piece includes the torsional spring, and the torsional spring is connected with rotating the piece, drives to rotate the piece and keeps away from the body direction with the one end that the mileage wheel is connected and removes.

Through adopting above-mentioned technical scheme, produce elastic deformation back through the torsional spring, the torsional spring can apply the effort through the pin to the rotation piece of being connected with the pin, makes rotation piece and mileage wheel remove along keeping away from the body direction.

Preferably, the body is configured with a working chamber that receives an end of the rotatable member connected to the body and a portion of the extension member.

Through adopting above-mentioned technical scheme, the setting up of working chamber enables the body to protect rotating the piece and expanding, and the body has higher structural strength simultaneously.

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

a pipeline detector comprises the bidirectional mileage wheel train, and an inertial positioning component is connected to the bidirectional mileage wheel train.

Through adopting above-mentioned technical scheme, through using two-way mileage train pipeline detection instrument can with two-way removal in the pipeline, be convenient for survey in the complicated pipeline.

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

1. the pipeline detector can move in the pipeline in two directions by using the two-way mileage wheel train, so that the complex pipeline can be conveniently detected;

2. when a welding seam or a bulge is met, the expansion mechanism drives the mileage wheel to move, so that the mileage wheel is close to the body, the mileage wheel system can conveniently pass through the welding seam, and the effectiveness of the mileage wheel system in recording mileage is ensured;

3. the setting up of working chamber enables the body and protects rotation piece and extension piece, and the body has higher structural strength simultaneously.

Drawings

FIG. 1 is a schematic view showing the overall structure of a two-way mileage train wheel in embodiment 1;

FIG. 2 is a schematic view showing the structure of the relation of the rotating members in embodiment 1;

FIG. 3 is an exploded perspective view of the coupling of the fixed shaft and the rotating member in accordance with embodiment 1;

fig. 4 is a schematic sectional view showing the relationship among the fixed shaft, the sliding shaft and the body in embodiment 1.

Description of the reference numerals: 1. a body; 11. a working chamber; 12. a countersunk waist-shaped hole; 2. a mileage wheel; 3. a rotating member; 4. an extension member; 41. a torsion spring; 5. a movable shaft; 51. a sliding connector; 6. a fixed shaft; 61. fixing the bolt; 7. and (4) a flange bearing.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses two-way mileage train and pipeline detector.

Example 1

Referring to fig. 1 and 2, a bidirectional mileage train comprises a body 1 with two ends for connecting with other functional components, and a mileage extension part connected to the body 1, wherein the mileage extension part comprises a mileage wheel and an extension mechanism. The mileage wheel 2 is provided with two that are respectively distributed at both sides of the body 1. The extension mechanism drives the mileage wheels 2 to move away from the direction of the body 1, and after the body 1 is placed into the pipeline, the extension mechanism drives the two mileage wheels 2 to be abutted against and compressed against the inner wall of the pipeline.

The body 1 is a cylinder, two ends of the body are respectively connected with other functional components of the pipeline detector through joints, a working cavity 11 is constructed on the body 1, and the working cavity 11 penetrates through the side face of the body 1.

The expansion mechanism comprises a rotating assembly and an expansion member 4. The rotating assembly is provided with two groups which are respectively connected with the two mileage wheels 2, and one group of rotating assembly comprises two rotating pieces 3 which are respectively connected with the same mileage wheel 2 in a rotating way. One end of the rotating piece 3, which is far away from the mileage wheel 2, is rotatably connected with the body 1. The extension piece 4 exerts the effect that the drive rotated 3 pivoted to rotating 3, and when body 1 was located the pipeline inner chamber, extension piece 4 made mileage wheel 2 side and pipeline inside wall support pressure to the effort that rotates 3 and exert. A magnetic column is arranged in the mileage wheel 2, a Hall element corresponding to the mileage wheel 2 is arranged on the rotating piece 3, and the Hall element converts the rotation of the mileage wheel 2 into an electric signal for output.

Referring to fig. 3 and 4, in order to realize the rotatable connection between the rotating member 3 and the body 1, a fixed shaft 6 is fixedly connected to the body 1, the fixed shaft 6 is rotatably connected to the two rotating members 3 respectively located at the two sets of rotating assemblies, the two rotating members 3 connected to the same fixed shaft 6 are located at the same end of the body 1 in the length direction, and the rotating members 3 axially rotate around the fixed shaft 6. The fixing shaft 6 has fixing bolts 61 screwed at both ends. Set up on body 1 with hold two coaxial counter bores of chamber intercommunication, the counter bore holds the nut part of fixing bolt 61 and inserts the counter bore, two fixing bolt 61 penetrate behind the counter bore with 6 threaded connection of fixed axle, realize the fixed connection between fixed axle 6 and the body 1.

Referring to fig. 3 and 4, in order to realize the rotation connection between the rotating member 3 and the body 1, and the rotating shaft moves along the moving direction of the body 1, two rotating members 3 respectively located on the two sets of rotating assemblies are provided with a moving shaft 5 in a penetrating manner, the moving shaft 5 is connected with the rotating member 3 in a rotating manner, and the rotating member 3 axially rotates around the moving shaft 5.

The two ends of the moving shaft 5 are connected with sliding connecting pieces 51 connected with the body 1 in a threaded manner, each sliding connecting piece 51 comprises a threaded part and a roller wheel which are integrally formed and coaxial, the threaded parts are connected with the moving shaft 5 in a threaded manner, and the roller wheels slide relative to the body 1. Set up on body 1 and hold two coaxial countersunk head waist shape hole 12 of chamber intercommunication, countersunk head waist shape hole 12 holds sliding connection spare 51 and inserts, and two sliding connection spare 51 penetrate behind the countersunk head waist shape hole 12 with remove 5 threaded connection on the axle, and at this moment, sliding connection spare 51's gyro wheel rolls in countersunk head waist shape hole 12, realizes sliding connection, sliding connection spare 51 and the removal 5 fixed connection between sliding connection spare 51 and the body 1. The sliding portions of the two sliding connectors 51 are not pressed against the body 1, and at this time, when the sliding connectors 51 move, the sliding connectors 51 can rotate around their axes, so that the sliding friction between the sliding connectors 51 and the body 1 is converted into rolling friction, and the resistance of the sliding connectors 51 during movement is reduced.

Referring to fig. 3 and 4, in order to reduce the abrasion between the rotating member 3 and the fixed shaft 6 and the moving shaft 5 when the rotating member 3 rotates, and to restrict the rotating member 3 from moving in the axial direction of the fixed shaft 6, both ends of the fixed shaft 6 and the moving shaft 5 are respectively sleeved with flange bearings 7. The rotating part 3 is provided with a round hole for accommodating the flange bearing 7, so that the sliding of the rotating part 3 along the axial direction of the fixed shaft 6 is limited, and the sliding of the rotating part 3 along the axial direction of the moving shaft 5 is limited.

Referring to fig. 3, the expansion member 4 includes a torsion spring 41, the torsion spring 41 is respectively sleeved on the outer side of the fixing shaft 6, two pins of the torsion spring 41 are respectively fixedly connected to two coaxial rotating members 3 located on the two sets of rotating assemblies, a bend is arranged on the pin of the torsion spring 41 along the axis direction of the fixing shaft 6, and a round hole for accommodating the pin of the torsion spring 41 is formed in the rotating member 3. For the installation of torsional spring 41, equal interval is seted up two round holes that can hold the pin on the same rotation piece 3, and the pin is connected fixedly with a round hole on the rotation piece 3. The inner side of the torsion spring 41 is sleeved with a sleeve which is sleeved on the outer side of the fixed shaft 6, and the sleeve can improve the stability of the torsion spring 41 during deformation. Preferably, in order to increase the biasing force of the spreader 4, a torsion spring 41 is externally fitted around the moving shaft 5.

In another embodiment, the expansion element 4 further comprises a gas spring, and two ends of the gas spring are respectively hinged to the two rotating elements 3 of the two sets of rotating assemblies. The expansion piece 4 further comprises a pressure spring, and two ends of the pressure spring are fixedly connected with the two rotating pieces 3 which are coaxial with the two groups of rotating assemblies respectively.

In another embodiment, two rotating members 3 of the rotating assembly are connected to a moving shaft 5, and the two moving shafts 5 are connected to the rotating members 3 in a rotating manner and connected to the body 1 in a sliding manner.

In another embodiment, a fixed shaft 6 is connected to each of the two rotating members 3 of the rotating assembly, the two fixed shafts 6 are both rotatably connected to the rotating members 3, one of the rotating members 3 is a telescopic member with adjustable length, one end of the rotating member 3 is rotatably connected to the fixed shaft 6, and the other end is rotatably connected to the mileage wheel 2. The rotation members 3 rotate around the fixed shaft 6, and when the rotation members 3 rotate away from the body 1, that is, the included angle between the two rotation members 3 increases, the length of the rotation members 3 is extended.

Referring to fig. 3, a mileage wheel 2 is rotatably connected to a set of rotating members, both axial ends of the mileage wheel 2 are respectively connected to a rotating member 3 on a fixed shaft 6 and a rotating member 3 on a moving shaft 5, the mileage wheel 2 is located between the two rotating members 3, the rotating shaft of the mileage wheel 2 is parallel to the rotating shaft of the fixed shaft 6, and countersunk screws connect the two rotating members 3 of the same set of rotating members to both ends of the same mileage wheel 2.

The implementation principle of the two-way mileage wheel train in the embodiment of the application is as follows:

the torsion spring 41 is sleeved outside the moving shaft 5 and the fixed shaft 6, after the two mileage wheels 2 are respectively connected with the two groups of rotating assemblies, the moving shaft 5 and the fixed shaft 6 are placed in the working cavity 11 of the body 1, the fixed shaft 6 is connected with the body 1 by using the fixed bolt 61, and the moving shaft 5 is connected with the body 1 by the sliding connecting piece 51;

the odometer is placed in a pipeline to be measured, the torsion spring 41 exerts an action on the rotating piece 3 to enable the odometer wheel 2 to be pressed against the inner wall with the measuring pipeline, and when the odometer wheel system moves in the pipeline, the odometer wheel 2 synchronously rotates;

when the odometer meets a convex welding seam, no matter the odometer wheel train moves towards the direction, the odometer wheel 2 on the odometer expansion part is kept in collision and compression with the pipe wall under the action of the torsion spring 41, and when the odometer wheel 2 is blocked by the welding seam, the odometer wheel can be pulled reversely to move.

The embodiment of the application further discloses a pipeline detector. The pipeline detector comprises an inertia positioning component, a bidirectional mileage wheel train, a battery bin and a control bin which are sequentially connected with one another.

Example 2

The difference between this embodiment and embodiment 1 lies in that a two-way mileage train includes extension piece 4, and extension piece 4 is torsional spring 41, and two bending ends of torsional spring 41 rotate piece 3 fixed connection with two in the same rotating component respectively, and torsional spring 41 drives two and rotates 3 rotations, makes the contained angle between two rotation pieces 3 reduce. In other embodiments the torsion spring 41 is a tension spring.

Example 3

The present embodiment is different from embodiment 1 in that a two-way mileage train wheel includes two moving shafts 5 and one fixed shaft 6. Two removal axles 5 are connected with two rotation pieces 3 one-to-one respectively, and two rotation pieces 3 that are connected with two removal axles 5 are located two sets of rotating assemblies respectively. A fixed shaft 6 is connected to the two rotating members 3 at the two sets of rotating assemblies, respectively. Can guarantee at this moment that two sets of rotating assembly can control respectively, guarantee when one of them mileage wheel 2 and pipe wall compress tightly the effect not enough, another mileage wheel 2 still can keep compressing tightly with the pipe wall, and avoid owing to receive the influence of the restriction of same removal axle 5.

In another embodiment, the expansion mechanism comprises two fixed shafts 6 and two movable shafts 5, and the two sets of rotation mechanisms comprise one fixed shaft 6 and one movable shaft 5, respectively.

Example 4

The difference between the embodiment and the embodiment 1 is that the bidirectional mileage wheel train comprises three mileage wheels 2, and the three mileage wheels 2 are uniformly distributed along the circumferential direction of the body 1 at intervals.

Divide equally on the three mileage wheel 2 and do not be provided with an extension mechanism, extension mechanism includes runner assembly and extension 4, and the runner assembly includes two and rotates the rotation piece 3 of being connected with mileage wheel 2, and extension 4 rotates 3 with two of same runner assembly respectively and is connected. The stability of the mileage extension part formed by the three mileage wheels 2 is high.

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: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A two-way odometer gear train, comprising:

the device comprises a body (1) for carrying a mileage extension part to move in a pipeline to be tested;

the mileage extension part comprises a mileage wheel and an extension mechanism;

the mileage wheels (2) are at least provided with two mileage wheels distributed on the outer side of the body (1);

the expansion mechanism drives any mileage wheel (2) to move along the direction far away from the body (1);

the expanding mechanism includes:

the rotating assemblies are provided with a plurality of groups which correspond to the mileage wheels (2) one by one respectively, one group of rotating assemblies comprises two rotating pieces (3) which are rotatably connected with the same mileage wheel (2) respectively, the rotating pieces (3) are rotatably connected with the body (1), and the included angle between the two rotating pieces (3) on one group of rotating assemblies is gradually reduced when the two rotating pieces (3) move along the direction that the mileage wheels (2) are far away from the body (1);

and when the body (1) is positioned in the inner cavity of the pipeline, the expansion piece (4) applies acting force to the rotating assembly to enable the mileage wheel (2) to be pressed against the inner side wall of the pipeline.

2. A two-way odometer gear train according to claim 1, wherein the length of at least one rotor (3) on the rotor assembly increases as the rotor (3) rotates away from the body (1).

3. A two-way odometer gear train according to claim 1, wherein the axis of rotation of at least one of the rotatable members (3) connected to the body (1) moves in the direction of movement of the body (1).

4. A two-way odometer train according to claim 3, wherein the expansion mechanism further comprises: the moving shaft (5) slides along the length direction of the body (1) and is connected with the rotating piece (3) to form a rotating pair.

5. A two-way odometer train according to claim 4, further comprising a sliding connection (51) sliding with respect to the body (1);

the body (1) is provided with a countersunk kidney-shaped hole (12) for guiding the moving direction of the sliding connecting piece (51) during rotation.

6. A two-way odometer train according to any one of claims 1 to 5, wherein the expansion mechanism further comprises: the fixed shaft (6) is connected to a fixed position of the body (1), and the rotating assembly and the rotating piece (3) are connected to form a rotating pair.

7. A two-way odometer gear train according to claim 1, wherein the extension member (4) comprises a torsion spring (41), the torsion spring (41) is connected to the rotating member to move the end of the rotating member connected to the odometer gear (2) away from the body.

8. A two-way odometer gear train according to any one of claims 1, 2, 3, 4, 5, 7, characterized in that the body (1) is provided with a working chamber (11), the working chamber (11) accommodating the end of the rotor (3) connected to the body (1) and part of the extender (4).

9. A pipe probe comprising a two-way odometer train as claimed in any one of claims 1 to 8, the two-way odometer train having an inertial locating member attached thereto.