CN112129251A - Ultrasonic landform instrument driving device for laboratory water tank - Google Patents

Ultrasonic landform instrument driving device for laboratory water tank Download PDF

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Publication number
CN112129251A
CN112129251A CN202010781451.9A CN202010781451A CN112129251A CN 112129251 A CN112129251 A CN 112129251A CN 202010781451 A CN202010781451 A CN 202010781451A CN 112129251 A CN112129251 A CN 112129251A
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China
Prior art keywords
guide rail
gear
rack
ultrasonic
driving
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CN202010781451.9A
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CN112129251B (en
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汪宁
漆文刚
高福平
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Institute of Mechanics of CAS
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Institute of Mechanics of CAS
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B17/00Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
    • G01B17/06Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring contours or curvatures
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06Systems determining the position data of a target

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

The invention provides an ultrasonic topographic apparatus driving device for a laboratory sink, comprising: the measuring platform comprises longitudinal guide rails which are respectively slidably mounted on the two water channel rails, and a moving frame which is vertically mounted on the two longitudinal guide rails and comprises a transverse guide rail, an auxiliary rod and a driving seat which is vertically connected with the transverse guide rail and the auxiliary rod, and a rack which is parallel to the longitudinal guide rails is mounted on one side of the driving seat; the driving motor is connected with a gear set connected with the rack; the ultrasonic topographic apparatus is installed below the transverse guide rail through a sliding block, and the sliding block is connected with the gear set through a crank structure, so that the sliding block can move back and forth along the transverse guide rail under the driving of the gear set. The invention can complete the scanning measurement of the topography of the bed surface within a certain range only by using one ultrasonic topography instrument, and can save the development cost; and the requirements on the number of acquisition channels and equipment are low.

Description

Ultrasonic landform instrument driving device for laboratory water tank
Technical Field
The invention relates to the field of topographic survey, in particular to an ultrasonic topographic apparatus driving device for a laboratory water tank.
Background
The ultrasonic topography instrument measures the distance from a bed surface by utilizing a time difference mode from transmitting ultrasonic waves to receiving reflected waves, and can be used for monitoring fixed-point erosion and deposition evolution of the bed surface in a model experiment in real time. The method has the advantages of high acquisition speed, high measurement precision and stable and reliable work.
For the measurement of the whole three-dimensional shape of the bed surface, an ultrasonic topographic apparatus array or a two-dimensional scanning system driven by a programmable motor is frequently adopted at present. The former needs a plurality of topographers to form an array covering a measurement area, which has high requirements on the number of sensors and the number of acquisition channels, and data has discontinuity; the latter has high requirements on the motor control system.
Disclosure of Invention
The invention aims to provide a driving device for realizing topographic measurement of a laboratory water tank by using a single driving motor and a single ultrasonic topographic instrument.
Specifically, the present invention provides an ultrasonic topographer drive for a laboratory sink comprising:
a water tank for generating a three-dimensional terrain, water tank rails provided on opposite sides,
the measuring platform can realize plane movement above the water tank and comprises longitudinal guide rails which are respectively slidably mounted on two water tank rails and a moving frame which is vertically mounted on the two longitudinal guide rails, the moving frame comprises a transverse guide rail, an auxiliary rod which is arranged in parallel and a driving seat which is connected with the transverse guide rail and the auxiliary rod, and a rack which is parallel to the longitudinal guide rail is mounted on one side of the driving seat;
the driving motor is arranged on the driving seat and connected with a gear set for outputting power, and the gear set is connected with the rack and drives the moving frame to move along the longitudinal guide rail;
the ultrasonic topographic apparatus is used for measuring the topography in a water tank, is arranged below a transverse guide rail through a sliding block, and is connected with a gear set through a crank structure, so that the sliding block can realize reciprocating movement along the transverse guide rail under the driving of the gear set, and under the control of the gear set, after the sliding block moves from one end of the transverse guide rail to the other end, the moving frame moves for a preset distance along a longitudinal guide rail.
In one embodiment of the present invention, the gear set includes a driving gear connected to the output shaft of the driving motor, and a driven gear engaged with the driving gear, wherein the diameter of the driven gear is larger than that of the driving gear, the driven gear is connected with a set of sheaves, the sheaves are connected with a step gear through a bearing seat, and the step gear is engaged with the rack.
In one embodiment of the invention, the grooved wheel comprises a limiting piece and a rotating piece, wherein the limiting piece is connected with a fixed rod fixed at the axis of the driven gear through a bearing seat, four symmetrically-protruding clamping grooves are formed in the outer circumference of the rotating piece, a connecting rod with a positioning pin extends out of the bottom of the limiting piece, an inner arc-shaped notch is formed in the position where the limiting piece extends out of the connecting rod, one clamping groove of the rotating piece extends into the inner arc-shaped notch, the positioning pin is clamped in the clamping groove, and the stepping gear is connected at the axis of the rotating piece through a shaft rod.
In one embodiment of the present invention, the rotary piece rotates 90 degrees for every rotation of the driven gear.
In one embodiment of the invention, the crank structure comprises a rocker and a crank, the auxiliary rod is provided with a shaft seat with a rocker shaft, one end of the rocker is connected with the rocker shaft, the sliding block is connected with a sliding seat A shaft which is clamped on the rocker and can move along the axial direction of the rocker, one end of the crank is connected with one end of the fixed rod, which extends out of the lower surface of the driven gear, and the other end of the crank is connected with a sliding seat B shaft which is clamped on the rocker and can move along the axial direction of the rocker.
In one embodiment of the present invention, a laser displacement sensor is mounted at one end of the lateral guide rail, a reflection plate is mounted on the slider, and the laser displacement sensor measures the position of the ultrasonic topographic apparatus by movement of the reflection plate relative to the lateral guide rail.
In one embodiment of the present invention, a transverse fixing frame is respectively installed at both ends of the longitudinal rail, and both ends of the rack are overlapped on the transverse fixing frame.
In one embodiment of the invention, a reset device is installed in parallel on one side of the rack, the reset device comprises a sliding seat and a reset rod, two ends of the sliding seat are fixed with the transverse fixing frame, the reset rod is placed on the sliding seat, a stop block for preventing the reset rod from moving laterally is arranged on the sliding seat, the reset rod is connected with the rack through a pull rod, and a handle for conveniently pulling the reset rod to move along the axial direction of the sliding seat is arranged at one end of the reset rod.
In one embodiment of the invention, the longitudinal rail is clamped to the flume rail by a bottom mounted pulley.
In one embodiment of the present invention, a limit switch is mounted on the moving frame, the limit switch is triggered when the moving frame moves to the end of the longitudinal rail, and the triggered limit switch disconnects the power supply of the driving motor.
The invention can complete the scanning measurement of the topography of the bed surface within a certain range only by using one ultrasonic topography instrument, and can save the development cost; the requirements on the number of acquisition channels and equipment are low; the ultrasonic topographic apparatus can be driven to reciprocate along the transverse direction and intermittently step by step along the longitudinal direction only by using one constant-speed motor, the requirement on power input is low, and the purchase is easy; the main parts of the whole transmission mechanism are standard parts such as a gear (rack), a grooved pulley, a slide block guide rail, a bearing and the like, and the processing difficulty is low; the main structural parts are standard aluminum materials, are simple to assemble and are suitable for being automatically developed and assembled in a laboratory.
Drawings
FIG. 1 is a schematic view of a driving device according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a gear set configuration according to one embodiment of the present invention;
FIG. 3 is a schematic view of a crank configuration according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a resetting device according to an embodiment of the invention.
Detailed Description
The detailed structure and implementation process of the present solution are described in detail below with reference to specific embodiments and the accompanying drawings.
In the following description, a state when the water tank is placed horizontally is taken as a description object, where a direction of the water tank toward the screen is taken as a "longitudinal direction" and a direction of the water tank parallel to the screen is taken as a "lateral direction".
As shown in fig. 1, in one embodiment of the present invention, an ultrasonic topographic apparatus driving device for a laboratory water bath is disclosed, which includes a water bath 1, a measuring platform 2, a driving motor 6, and an ultrasonic topographic apparatus 7.
The water tank 1 is used for creating a three-dimensional terrain, and water tank rails 11 are provided on both longitudinal sides thereof.
The measuring platform 2 is used as a platform for bearing the ultrasonic topographic apparatus 7 to horizontally move above the water tank 1, and comprises longitudinal guide rails 21 which are respectively installed on two water tank rails 11 in a sliding manner and a moving frame 22 which is vertically installed on the two longitudinal guide rails 21, wherein the longitudinal guide rails 21 are clamped on the water tank rails 11 through pulleys 211 installed at the bottom; the moving frame 22 includes a parallel cross rail 221 and an auxiliary rod 225, a driving seat 222 is vertically connected between the cross rail 221 and the auxiliary rod, and a rack 23 parallel to the longitudinal rail 21 is installed at one side of the driving seat 222. The carriage 22 is configured to be capable of reciprocating sliding along the vertical rail 21 by an engaging and coupling structure between both ends of the horizontal rail 221 and the auxiliary rod 225 and the vertical rail 21, and a coupling method between the carriage 22 and the vertical rail 21 may be a dovetail groove-shaped engaging and sliding structure.
As shown in fig. 2, the driving motor 6 is mounted on the driving base 222 and connected to the gear set 9 for outputting power, and the gear set 9 is connected to the rack 23 to drive the moving frame 22 to move along the longitudinal guide 21.
As shown in fig. 3, the ultrasonic topography instrument 7 is used for measuring three-dimensional topography in the water tank 1, and is installed below a transverse guide rail 221 through a slide block 71, the slide block 71 can axially move along the transverse guide rail 221, and the slide block 71 is installed on the transverse guide rail 221; the slide block 71 is connected with the gear set 9 through the crank structure 8, so that the slide block 71 is driven by the gear set 9 to reciprocate along the axial direction of the transverse guide rail 221, and the moving rack 22 moves to the next scanning distance along the longitudinal guide rail 21 after the slide block 71 moves from one end of the transverse guide rail 221 to the other end under the control of the gear set 9.
When the ultrasonic landform instrument works, the moving frame 22 is located on one side of the water tank 1, the left lower corner of the water tank 1 is used as a coordinate origin, the ultrasonic landform instrument 7 is located at the origin, after the driving motor 6 is started, the driving motor 6 drives the crank structure 8 by using the gear set 9, so that the ultrasonic landform instrument 7 starts to move along the transverse guide rail 221, and the terrain in the water tank 1 below is scanned.
The ultrasonic topographic instrument 7 moves along the X direction, when the ultrasonic topographic instrument reaches the longitudinal guide rail 21 on the other side, the scanning of the current water tank area is finished, the gear connected with the rack 23 in the gear set 9 is triggered, the moving rack 22 moves to the next scanning position along the longitudinal guide rail 21 through the thrust of the rack 23, the ultrasonic topographic instrument 7 returns to the end point on the left side in the moving process of the moving rack 22, the scanning process is repeated until the moving rack 22 reaches the tail end of the water tank 1, and meanwhile, the ultrasonic topographic instrument 7 moves to the right end of the moving rack 22, and the scanning is finished.
In the scanning process, if the length (longitudinal direction) of the water tank 1 is greater than that of the measuring platform 2, the measuring platform 2 can be manually or mechanically pushed, and the whole measuring platform 2 moves forwards along the water tank guide rail 11 through the roller 211 at the bottom of the longitudinal guide rail 21 until the moving frame 22 can drive the ultrasonic topographic apparatus 7 to complete the scanning work of the whole area. The measuring platform 2 or the movable frame 22 after completing the scanning operation can be manually or mechanically pushed back to the original parking position to wait for the next scanning operation.
In order to obtain the moving position information of the ultrasonic topographic apparatus 7 conveniently, a laser displacement sensor 223 is installed at one end of the transverse guide rail 221, a reflection plate 224 is installed on the slider 71, and the laser displacement sensor 223 measures the position of the ultrasonic topographic apparatus 7 through the movement of the reflection plate 224 relative to the transverse guide rail 221.
The invention can complete the scanning measurement of the topography of the bed surface within a certain range only by using one ultrasonic topography instrument, and can save the development cost; the requirement on the number of channels of the acquisition equipment is low; the ultrasonic topographic apparatus can be driven to reciprocate along the transverse direction and intermittently step by step along the longitudinal direction only by using one constant-speed motor, the requirement on power input is low, and the purchase is easy; the main parts of the whole transmission mechanism are standard parts such as a gear (rack), a grooved pulley, a slide block guide rail, a bearing and the like, and the processing difficulty is low; the main structural parts are standard aluminum materials, are simple to assemble and are suitable for being automatically developed and assembled in a laboratory.
As shown in fig. 2 and 3, in an embodiment of the present invention, the specific gear set 9 includes a driving gear 91 connected to the output shaft of the driving motor 6, and a driven gear 92 engaged with the driving gear 91, wherein the diameter of the driven gear 92 is larger than that of the driving gear 91, and in this embodiment, one rotation of the driven gear 92 requires the ultrasonic topographer 7 to move from one end of the cross rail 221 to the other end, so that the diameter ratio of the driven gear 92 to the driving gear 91 needs to be controlled. Meanwhile, the driven gear 92 is connected with a set of grooved wheel for connecting with the rack 23, and the driven gear 92 is driven to move longitudinally for a specified distance by being linked with the rack 23 after rotating for a circle, the grooved wheel is connected with a step gear 95 which synchronously rotates through a bearing seat, and the step gear 95 is meshed with the rack 23.
During driving, the driving gear 91 is driven by the driving motor 6 to rotate at a constant speed, so as to drive the driven gear 92 to rotate at a constant speed, and the rotation of the driven gear 92 drives the sliding block 71 and the ultrasonic topographic apparatus 7 to move along the transverse guide rail 221 at a constant speed through the crank structure 8. After the driven gear 92 rotates for a circle, the slider 71 and the ultrasonic topographer 7 complete the scanning from one end (left end) to the other end (right end) of the transverse guide rail 221, and simultaneously return to the starting point from the other end, in the process, the crank structure 8 completes the whole reciprocating driving process through the matching of the internal components, and meanwhile, the grooved wheel is driven to rotate, so that the stepping gear 95 is driven to travel in a meshing manner with the rack 23, and the whole moving frame 22 is driven to move for a certain distance along the longitudinal direction of the water tank 1.
As shown in fig. 2, in an embodiment of the present invention, the sheave includes a limiting piece 93 and a rotating piece 94, wherein the limiting piece 93 is connected to a fixed rod fixed at the axis of the driven gear 92 through a bearing seat, the fixed rod and the driven gear 92 rotate synchronously, four symmetrically protruding clamping slots 941 are provided on the outer circumference of the rotating piece 94, an inner arc-shaped connecting edge 943 is provided between the four clamping slots 941, and a slot 942 with one end open and the other end extending towards the center of the circle is provided inside the clamping slot 941;
a connecting rod 932 with a positioning pin 933 is fixedly extended below the limiting piece 93, and the positioning pin 933 is vertically fixed on the upper surface of the connecting rod 932; an inner arc notch 931 is arranged at the position where the limiting piece 93 extends out of the connecting rod 932, a clamping groove 941 of the rotating piece 94 extends into the inner arc notch 931, the positioning pin 933 is clamped in a groove 942 of the clamping groove 941, and the stepping gear 95 is connected to the axis of the rotating piece 94 through a shaft rod.
When the limiting piece 94 rotates, the limiting piece 93 rotates one circle, the inner arc-shaped notch 931 drives the clamping groove 941 clamped inside to rotate at the same time, the outer circumference of the limiting piece is in contact with the inner arc-shaped connecting edge 943 of the clamping groove 941, the whole moving piece 94 is pushed to rotate, after the limiting piece 93 moves one circle, the rotating piece 94 rotates 90 degrees, and at the moment, the next clamping groove 941 on the rotating piece 94 enters the inner arc-shaped notch 931 again. For every 90 degrees of rotation of the rotary plate 94, the step gear 95 connected thereto travels along the rack 23 over a distance within the 90 degree range of rotation, which is equal in length to the longitudinal width that can be scanned by the ultrasonic topographer 7 each time.
As shown in fig. 3, in an embodiment of the present invention, a specific crank structure 8 includes a rocker 81 and a crank 82, a shaft seat 83 with a rocker shaft 831 is mounted on the auxiliary rod 225, one end of the rocker 81 is connected with the rocker shaft 831, the connected rocker 81 can rotate horizontally and circularly with the rocker shaft 831 as a fulcrum, a slider 71 is connected with a slide a84 shaft which is clamped on the rocker 81 and can move along the axial direction of the rocker 81, one end of the crank 82 is connected with one end of a fixed rod at the axial center of the driven gear 92 extending out of the lower surface of the driven gear 92, and the other end is connected with a slide B85 shaft which is clamped on the rocker 81 and can move along the axial direction of the rocker 81. Under the structure, the crank 82 can horizontally rotate around the fixed rod.
During operation, the crank 82 is driven by the driven gear 92 to synchronously rotate, the other end of the crank 82 drives the sliding seat B85 to move around by taking one end of the fixed rod as a center of a circle, and the sliding seat B85 is clamped on the rocker 81, so that the rocker 81 is driven to swing back and forth by taking one end of the rocker shaft 831 as a rotation point, the rotation of the rocker 81 further drives the sliding seat a84 to move, the sliding seat a84 and the sliding block 71 are connected through a shaft, that is, the sliding seat a84 rotates horizontally without affecting the sliding block 71, but the tangential force applied to the sliding seat a84 is transmitted to the sliding block 71, so that the sliding block 71 linearly moves on the transverse guide rail 221, and the ultrasonic topographic apparatus 7 is driven to move along the.
In this embodiment, the length or the rotation range of the rocker 81 is at least as long as the slider 71 can move from one end of the cross rail 221 to the other end. Meanwhile, the length of the crank 82 is required to ensure that the rotation range of the control rocker 81 meets the requirement of the moving distance of the sliding block 71.
In one embodiment of the present invention, a horizontal fixing frame 24 is attached to each end of the longitudinal rail 21, and both ends of the rack 23 are placed on the horizontal fixing frame 24.
As shown in fig. 4, further, a reset device 5 is installed in parallel on one side of the rack 23, the reset device 5 includes a sliding seat 51 and a reset rod 52, two ends of the sliding seat 51 are fixed to the transverse fixing frame 24, the reset rod 52 is placed on the sliding seat 51 and can axially move relative to the sliding seat 51, a stopper 54 for preventing the reset rod 52 from laterally moving is disposed on the sliding seat 51, the reset rod 52 is connected to the rack 23 through a pull rod 54 connected to the shaft, two to four pull rods 53 can be disposed, the pull rod 53 can horizontally rotate relative to the reset rod 42 and the rack 23, and a handle 55 for conveniently pulling the reset rod 52 to axially move along the sliding seat 51 is disposed at one end of the reset rod 52.
When the whole measuring platform 2 moves to the end of the water tank 1 or the longitudinal guide rail 21 to complete the measuring task, the reset operation of the moving frame 22 can be performed to separate the rack 23 from the step gear 95, then the moving frame 22 is manually moved to return to the starting point of the measuring platform 2, and then the rack 23 is engaged with the step gear 95 again.
When the length of the water tank 1 is greater than that of the measuring platform 2, after the scanning of the current area is completed, the whole measuring platform 2 can be moved to the adjacent area, and then the scanning is performed by the moving frame 22 through the above process.
The reset process is as follows, the handle 55 is pulled to axially move the reset rod 52 relative to the sliding seat 51, the movement of the reset rod 52 drives the pull rod 53 to move, and the pull rod 53 pulls the rack 23 at the other end to move towards the reset rod 52, so that the rack 23 is separated from the step gear 95.
When the rack 23 needs to be reset, the handle 55 is pushed reversely to return the reset rod 52 to the original position, at this time, the pull rod 53 pushes the rack 23 to move in a direction away from the reset rod 52 in the moving process, when the pull rod 53 is in a vertical state with the reset rod 52 and the rack 23, the rack 23 reaches the farthest distance and is meshed with the step gear 95 in the distance, and in this state, the rack 23 is supported by the pull rod 53 and is fixed at the current position, and is always meshed with the step gear 95. That is, in the present embodiment, the rack 23 is not always at a certain fixed position, but the fixed position is determined by the state of the pull rod 53.
In order to remind the operator, a limit switch is installed on the transverse guide rail 221 on one side of the moving frame 22 in the advancing direction, the limit switch is triggered when the moving frame 22 moves to the end of the longitudinal guide rail 11 or the water tank 1, and the triggered limit switch cuts off the power supply of the driving motor 6, so that the damage of the device caused by excessive longitudinal displacement is avoided.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (10)

1. An ultrasonic topographer drive for a laboratory sink comprising:
a water tank for generating a three-dimensional terrain, water tank rails provided on opposite sides,
the measuring platform can realize plane movement above the water tank and comprises longitudinal guide rails which are respectively slidably mounted on two water tank rails and a moving frame which is vertically mounted on the two longitudinal guide rails, the moving frame comprises a transverse guide rail, an auxiliary rod which is arranged in parallel and a driving seat which is connected with the transverse guide rail and the auxiliary rod, and a rack which is parallel to the longitudinal guide rail is mounted on one side of the driving seat;
the driving motor is arranged on the driving seat and connected with a gear set for outputting power, and the gear set is connected with the rack and drives the moving frame to move along the longitudinal guide rail;
the ultrasonic topographic apparatus is used for measuring the topography in a water tank, is arranged below a transverse guide rail through a sliding block, and is connected with a gear set through a crank structure, so that the sliding block can realize reciprocating movement along the transverse guide rail under the driving of the gear set, and under the control of the gear set, after the sliding block moves from one end of the transverse guide rail to the other end, the moving frame moves for a preset distance along a longitudinal guide rail.
2. The drive device according to claim 1,
the gear set comprises a driving gear connected with an output shaft of the driving motor and a driven gear meshed with the driving gear, wherein the diameter of the driven gear is larger than that of the driving gear, the driven gear is connected with a set of grooved pulley, the grooved pulley is connected with a stepping gear through a bearing seat, and the stepping gear is meshed with the rack.
3. The drive device according to claim 2,
the grooved wheel comprises a limiting piece and a rotating piece, wherein the limiting piece is connected with a fixed rod fixed at the axis of the driven gear through a bearing seat, four symmetrical and convex clamping grooves are formed in the outer circumference of the rotating piece, a connecting rod with a positioning pin extends out of the bottom of the limiting piece, an inner arc-shaped notch is formed in the position, extending out of the connecting rod, of the limiting piece, one clamping groove of the rotating piece extends into the inner arc-shaped notch, the positioning pin is clamped in the clamping groove, and the stepped gear is connected to the axis of the rotating piece through a shaft rod.
4. The drive device according to claim 3,
and the rotating sheet rotates for 90 degrees when the driven gear rotates for one circle.
5. The drive device according to claim 1,
the crank structure comprises a rocker and a crank, wherein the auxiliary rod is provided with a shaft seat with a rocker shaft, one end of the rocker is connected with the rocker shaft, the sliding block is connected with a sliding seat A shaft which is clamped on the rocker and can axially move along the rocker, one end of the crank is connected with one end, extending out of the lower surface of the driven gear, of the fixed rod, and the other end of the crank is connected with a sliding seat B shaft which is clamped on the rocker and can axially move along the rocker.
6. The drive device according to claim 1,
and a laser displacement sensor is arranged at one end of the transverse guide rail, a reflecting plate is arranged on the sliding block, and the laser displacement sensor measures the position of the ultrasonic topographic apparatus through the movement of the reflecting plate relative to the transverse guide rail.
7. The drive device according to claim 1,
and two ends of the longitudinal guide rail are respectively provided with a transverse fixing frame, and two ends of the rack are arranged on the transverse fixing frames.
8. The drive device according to claim 7,
one side parallel arrangement of rack has resetting means, resetting means includes sliding seat and release link, the both ends of sliding seat with transverse fixing frame is fixed, and the release link is placed on the sliding seat, is provided with the dog that prevents release link side and move on the sliding seat, the release link with the rack passes through the pull rod and realizes connecting, is provided with the handle that makes things convenient for the pulling release link along sliding seat axial displacement in the one end of release link.
9. The drive device according to claim 1,
the longitudinal guide rail is clamped on the water tank rail through a pulley arranged at the bottom.
10. The drive device according to claim 1,
and a limit switch is mounted on the movable frame, the limit switch is triggered when the movable frame moves to the tail end of the longitudinal guide rail, and the triggered limit switch cuts off the power supply of the driving motor.
CN202010781451.9A 2020-08-06 2020-08-06 Ultrasonic landform instrument driving device for laboratory water tank Active CN112129251B (en)

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WO2016067258A1 (en) * 2014-10-30 2016-05-06 DU PLOOY, Cheryl Pool cleaner drive mechanism
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