CN214951096U - Linear displacement experiment table convenient for sensor disassembly and assembly - Google Patents
Linear displacement experiment table convenient for sensor disassembly and assembly Download PDFInfo
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- CN214951096U CN214951096U CN202120685398.2U CN202120685398U CN214951096U CN 214951096 U CN214951096 U CN 214951096U CN 202120685398 U CN202120685398 U CN 202120685398U CN 214951096 U CN214951096 U CN 214951096U
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Abstract
The utility model discloses a linear displacement experiment table convenient for sensor disassembly, in the linear displacement experiment table convenient for sensor disassembly, a stepping motor is fixed at one end of a base, a lead screw module extends along the axial direction of the base, the lead screw module is connected with the stepping motor to do linear motion, two limit detection sensors are respectively fixed at two ends of the stroke of the lead screw module, when the lead screw runs and touches the limit detection sensors, the lead screw stops running, a detection plate is fixed on the lead screw module to follow the linear motion or stop of the lead screw, a magnetic grid ruler measures the full stroke displacement, a first mounting frame is detachably connected with the base, an ultrasonic sensor is fixed on the first mounting frame to measure the displacement of the first stroke, the first stroke is less than the full stroke, or a second mounting frame is detachably connected with the base, an eddy current sensor is fixed on the second mounting frame to measure the displacement of the second stroke, the second stroke is less than the first stroke.
Description
Technical Field
The utility model belongs to the technical field of measure the experiment, especially a linear displacement laboratory bench convenient to sensor dismouting.
Background
The testing technology is a basic method for human to know important means and scientific research in the objective world and is also an important technology in the engineering field, so the testing technology is a necessary course for students in professions related to machinery in the industrial and scientific institutions. Experiments are a necessary means to master the testing technique. The displacement is a common physical quantity in engineering, the variable range is wide, the micro displacement can reach micron level, the large displacement can reach meter, and the types of sensors for measuring the displacement are multiple, so that the displacement experiment table is widely applied to the teaching of the industrial and scientific practices. The linear displacement experiment table is composed of a base, a stepping motor, a lead screw, a sensor, a detection plate and the like, wherein the stepping motor drives the lead screw to move linearly, and the detection plate generates displacement change along with the movement of the lead screw. A fixed displacement sensor such as a bracket is designed on a base according to the sensor principle and is used for measuring the displacement generated by the movement of a detection plate. However, most common displacement experiment tables in the market at present have limited measuring strokes and single functions, and can only be used for measuring micro displacement or large displacement; the structure is solidified, the operability is poor, the disassembly and the assembly are inconvenient, various test schemes are inconvenient to design, and a test system is built; the supported sensor types are few, different test schemes cannot be designed aiming at problems, and the test principle, the test system design and the data processing method of various sensors are not easy to master.
The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a linear displacement laboratory bench convenient to sensor dismouting, its motion stroke is big, and is multiple functional, and scalability is strong, the dismouting of the multiple type sensor of being convenient for. The utility model aims at realizing through following technical scheme, a linear displacement laboratory bench convenient to sensor dismouting includes:
a base seat is arranged on the base seat,
a stepping motor which is fixed at one end of the base,
a lead screw module extending along the axial direction of the base, the lead screw module being connected to the stepping motor to move linearly,
two limit detection sensors which are respectively fixed at two ends of the stroke of the screw rod module, when the screw rod runs and touches the limit detection sensors, the running of the screw rod stops,
a detection plate fixed on the lead screw module to linearly move or stop along with the lead screw,
a magnetic scale for measuring full stroke displacement, the magnetic scale comprising,
a magnetic scale extending along the axis direction of the base and fixed on the side wall of the base,
the read head is fixed on the lead screw module to linearly move or stop along with the lead screw, when the read head linearly moves in a magnetic field space of the magnetic scale, the read head outputs position pulses in real time according to the movement displacement,
a first mounting bracket detachably connected to the base,
an ultrasonic sensor fixed to the first mounting bracket to measure a displacement of a first stroke, the first stroke being less than the full stroke,
or,
a second mounting bracket detachably connected to the base,
an eddy current sensor fixed to the second mounting bracket to measure a displacement of a second stroke, the second stroke being less than the first stroke.
In the linear displacement experiment table convenient for the disassembly and assembly of the sensor, the linear displacement experiment table also comprises,
a pull-cord type sensor that measures displacement of the first stroke, the pull-cord type sensor including,
the hub is provided with threads and is fixedly arranged on one side of the base, on which the stepping motor is arranged,
a pull rope, one end of which is wound on the hub and the other end is connected with the detection plate,
and the rotary inductor is connected with the hub to rotate along with the hub, and the rotary inductor outputs an electric signal proportional to the movement distance of the pull rope.
The linear displacement experiment table convenient for sensor disassembly and assembly is characterized by further comprising a photoelectric sensor for measuring the displacement of a first stroke, and the photoelectric sensor is fixed on the first mounting frame.
In the linear displacement experiment table convenient for the disassembly and assembly of the sensor, the first mounting frame comprises at least two mounting holes.
The linear displacement experiment table convenient for sensor disassembly and assembly is characterized by further comprising an inductive sensor for measuring displacement of a second stroke, and the inductive sensor is fixed on the second mounting frame.
In the linear displacement experiment table convenient for the sensor to be disassembled and assembled, the linear displacement experiment table further comprises an LVDT sensor for measuring the displacement of the second stroke, and the LVDT sensor is fixed on the second mounting frame.
In the linear displacement experiment table convenient for the disassembly and assembly of the sensor, the second mounting frame comprises at least two mounting holes.
In the linear displacement experiment table convenient for the disassembly and assembly of the sensor, the base is of an uncovered cuboid structure.
In the linear displacement experiment table convenient for the disassembly and assembly of the sensor, the first mounting frame or the second mounting frame is respectively provided with a pin in clearance fit with the base.
In the linear displacement experiment table convenient for sensor disassembly and assembly, the first mounting frame or the second mounting frame is arranged in parallel with the detection plate.
Compared with the prior art, the utility model has the advantages of it is following:
compared with the prior art, the utility model discloses simple structure, convenient to use can carry out the measurement of different scopes and precision to the first stroke of variation in size, second stroke and full stroke, and easy dismounting, and the motion stroke is big, multiple functional, and scalability is strong.
Drawings
Various other advantages and benefits of the present invention will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort. Also, like parts are designated by like reference numerals throughout the drawings.
In the drawings:
fig. 1 is a schematic structural diagram of a linear displacement experiment table for facilitating sensor assembly and disassembly according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first mounting frame of a linear displacement experiment table for facilitating sensor assembly and disassembly according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a second mounting frame of the linear displacement experiment table for facilitating sensor assembly and disassembly according to an embodiment of the present invention.
The invention is further explained below with reference to the drawings and examples.
Detailed Description
Specific embodiments of the present invention will be described in more detail below with reference to fig. 1 to 3. While specific embodiments of the invention are shown in the drawings, it will be understood that the invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
It should be noted that certain terms are used throughout the description and claims to refer to particular components. As one skilled in the art will appreciate, various names may be used to refer to a component. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The following description is of the preferred embodiment of the invention, and is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the invention. The protection scope of the present invention is subject to the limitations defined by the appended claims.
For the purpose of facilitating understanding of the embodiments of the present invention, the following description will be given by way of example with reference to the accompanying drawings, and the drawings do not limit the embodiments of the present invention.
For better understanding, as shown in fig. 1 to 3, the linear displacement experiment table for facilitating the assembly and disassembly of the sensor includes,
the base plate (11) is provided with a base,
a stepping motor 1 fixed at one end of a base 11,
a lead screw module 6 extending along the axial direction of the base 11, the lead screw module 6 being connected to the stepping motor 1 to move linearly,
two limit detection sensors 5 which are respectively fixed at two ends of the stroke of the screw module 6, when the screw runs and touches the limit detection sensors 5, the screw stops running,
a detection plate 7 fixed on the lead screw module 6 to linearly move or stop along with the lead screw,
a magnetic scale 4 for measuring a full stroke displacement, said magnetic scale 4 comprising,
a magnetic scale extending along the axial direction of the base 11 and fixed on the side wall of the base 11,
a read head fixed on the lead screw module 6 to move linearly or stop along with the lead screw, wherein when the read head moves linearly in the magnetic field space of the magnetic scale, the read head outputs position pulse in real time according to the movement displacement,
a first mounting frame 9 detachably connected to the base 11,
an ultrasonic sensor fixed to the first mounting frame 9 to measure a displacement of a first stroke, the first stroke being less than the full stroke,
or,
a second mounting frame 12 detachably connected to the base 11,
and an eddy current sensor 8 fixed to the second mounting frame 12 to measure a displacement of a second stroke, which is smaller than the first stroke.
In the preferred embodiment of the linear displacement experiment table convenient for the sensor to be assembled and disassembled, the linear displacement experiment table further comprises,
a pull-cord type sensor 10 measuring a displacement of a first stroke, the pull-cord type sensor 10 comprising,
a hub provided with screw threads, the hub is fixedly arranged at one side of the base 11 where the stepping motor 1 is arranged,
a pull rope, one end of which is wound on the hub, the other end of which is connected with the detection plate 7,
and the rotary inductor is connected with the hub to rotate along with the hub, and the rotary inductor outputs an electric signal proportional to the movement distance of the pull rope.
In the preferred embodiment of the linear displacement experiment table convenient for the disassembly and assembly of the sensor, the linear displacement experiment table further comprises a photoelectric sensor for measuring the displacement of the first stroke, and the photoelectric sensor is fixed on the first mounting frame 9.
In the preferred embodiment of the linear displacement experiment table convenient for mounting and dismounting the sensor, the first mounting frame 9 includes at least two mounting holes.
In the preferred embodiment of the linear displacement experiment table convenient for the disassembly and assembly of the sensor, the linear displacement experiment table further comprises an inductive sensor 3 for measuring the displacement of the second stroke, and the inductive sensor is fixed on the second mounting frame 12.
In the preferred embodiment of the linear displacement experiment table convenient for the sensor to be mounted and dismounted, the linear displacement experiment table further comprises an LVDT sensor 2 for measuring the displacement of the second stroke, and the LVDT sensor is fixed on the second mounting frame 12.
In the preferred embodiment of the linear displacement experiment table for facilitating the assembly and disassembly of the sensor, the second mounting frame 12 includes at least two mounting holes.
In the preferred embodiment of the linear displacement experiment table convenient for the disassembly and assembly of the sensor, the base 11 is of an uncovered cuboid structure.
In the preferred embodiment of the linear displacement experiment table convenient for mounting and dismounting the sensor, the first mounting frame 9 and the second mounting frame 12 are respectively provided with a pin which is in clearance fit with the base 11.
In a preferred embodiment of the linear displacement experiment table convenient for sensor assembly and disassembly, the first mounting frame 9 or the second mounting frame 12 is arranged parallel to the detection plate 7.
In one embodiment, the first mounting frame 9 or the second mounting frame 12 is mounted at a position on the base frame, and the two mounting frames can be replaced with each other and cannot be mounted at the same time.
In another embodiment, the first mounting frame is provided with an ultrasonic sensor and a photoelectric sensor, and the measuring range is more than 100 mm.
In another embodiment, the second mounting frame can be used for mounting three sensors such as an eddy current sensor and the like on the second mounting frame alternatively to the first mounting frame, and the measuring range is 0-50 mm.
It should be noted that the zero point position measured by the sensor is uniform regardless of the first mounting frame or the second mounting frame. Therefore, the utility model discloses can be convenient fuse together the sensor experiment of measuring different scope displacements, one kind is small displacement, a kind of big displacement. According to the utility model discloses a this kind of inventive concept, the utility model discloses still possess the strong characteristics of expansibility, it can further correspond different mounting brackets and fix on the laboratory bench according to the sensor size.
In one embodiment, the linear displacement experiment table convenient for sensor assembly and disassembly is composed of a stepping motor 1, a lead screw module 6, a limit detection sensor 5, a detection plate 7, a displacement sensor mounting frame, a displacement sensor, a magnetic grid ruler 4 and the like, as shown in fig. 1. Wherein, the sensor includes:
eddy current displacement sensor, LVDT displacement sensor, inductive displacement sensor, and used for measuring micro displacement,
the ultrasonic displacement sensor, the photoelectric displacement sensor and the pull rope displacement sensor are used for large displacement measurement,
the magnetic scale 4 is used for full-stroke displacement measurement, is used as a measurement reference,
the base 11 is in a shape of a cuboid without a cover, the stepping motor 1 is fixed at one end of the base 11 and is connected with the lead screw module 6 to drive the lead screw module 6 to move linearly,
two limit detection sensors 5 are respectively fixed at two ends of the lead screw stroke: when the lead screw runs and touches the limit detection sensor 5, the lead screw stops running, the running safety of the lead screw is ensured,
the detection plate 7 is fixed on the lead screw module 6 through a screw and moves linearly or stops along with the lead screw. Wherein, the pick-up plate 7 can design the pick-up plate of a plurality of different materials, and different materials then can include aluminum alloy, stainless steel, plastics etc. thereby make the utility model is used for the influence of different materials of analysis to sensor measuring result.
Further, in the above-mentioned case,
the magnetic scale 4 comprises a magnetic scale and a read head and operates according to the principle of magnetic induction. When the read head makes linear motion in the magnetic field space of the magnetic scale, the read head outputs standard position pulse in real time according to the motion displacement to realize displacement measurement,
the magnetic scale of the magnetic grid scale 4 is fixedly arranged on the side wall of the base 11, and the reading head is connected with the lead screw module 6 and moves linearly or stops along with the lead screw module 6.
As for the pull-cord type sensor 10, it consists of a threaded hub, a precision rotation sensor and a pull cord for converting mechanical movements into electrical signals that can be recorded, wherein:
wheel hub, accurate rotary inductor need be fixed, and the one end winding of stay cord is on wheel hub, and one end is tied up on moving object. Typically, wheel hub, accurate rotary inductor fixed mounting are in 11 installation step motor 1 sides of base, and stay cord one end winding is on wheel hub, and one end is connected with module lead screw on the fixed pick-up plate 7.
It should be noted that the moving axis of the moving object and the linear movement of the pull rope are required to be aligned. When motion occurs, the pull cord extends and retracts. In addition, an internal spring may be provided to ensure that the tension in the pull cord is constant.
The hub with the threads drives the precise rotary inductor to rotate, and an electric signal proportional to the moving distance of the pull rope is output to realize displacement measurement.
For the embodiment shown in the figure, corresponding mounting frames are respectively designed according to the working principle and the size of the eddy current sensor 8, the LVDT sensor 2, the inductive sensor 3, the ultrasonic sensor and the photoelectric sensor, the sensor mounting frame and the base 11 are installed in a positioning mode through pins and holes in clearance fit, holes are reserved in the base 11, and the pins are reserved in the mounting frames to facilitate disassembly and assembly.
The close-range sensors of eddy current sensor 8, LVDT sensor 2 and inductive sensor 3 can use the same mounting as shown in connection with fig. 1. The ultrasonic sensor and the photoelectric sensor can use the same mounting rack.
The mounting frame is respectively reserved with mounting holes of the eddy current sensor 8, the inductive sensor 3, the ultrasonic sensor and the photoelectric sensor, and the mounting holes are fixed in the mounting frame through threads and nuts on the sensors.
In another embodiment, the LVDT sensor 2 may be provided with a mounting device, which is fixed to the mounting bracket by screws, and the sensor body is fixed to the mounting device.
With reference to fig. 1 to 3, it can be seen that, for those skilled in the art, different sensor mounting frames can be designed for use on the experiment table according to different sensor sizes and fixing manners, and these modifications and replacements all belong to the protection scope of the present invention.
Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments and application fields, and the above-described embodiments are illustrative, instructive, and not restrictive. Those skilled in the art, having the benefit of this disclosure, may effect numerous modifications thereto without departing from the scope of the invention as defined by the appended claims.
Claims (10)
1. A linear displacement experiment table convenient for disassembling and assembling a sensor is characterized by comprising,
a base seat is arranged on the base seat,
a stepping motor which is fixed at one end of the base,
a lead screw module extending along the axial direction of the base, the lead screw module being connected to the stepping motor to move linearly,
two limit detection sensors which are respectively fixed at two ends of the stroke of the screw rod module, when the screw rod runs and touches the limit detection sensors, the running of the screw rod stops,
a detection plate fixed on the lead screw module to linearly move or stop along with the lead screw,
a magnetic scale for measuring full stroke displacement, the magnetic scale comprising,
a magnetic scale extending along the axis direction of the base and fixed on the side wall of the base,
the read head is fixed on the lead screw module to linearly move or stop along with the lead screw, when the read head linearly moves in a magnetic field space of the magnetic scale, the read head outputs position pulses in real time according to the movement displacement,
a first mounting bracket detachably connected to the base,
an ultrasonic sensor fixed to the first mounting bracket to measure a displacement of a first stroke, the first stroke being less than the full stroke,
or,
a second mounting bracket detachably connected to the base,
an eddy current sensor fixed to the second mounting bracket to measure a displacement of a second stroke, the second stroke being less than the first stroke.
2. The linear displacement experiment table for facilitating sensor disassembly and assembly according to claim 1, wherein the linear displacement experiment table further comprises,
a pull-cord type sensor that measures displacement of the first stroke, the pull-cord type sensor including,
the hub is provided with threads and is fixedly arranged on one side of the base, on which the stepping motor is arranged,
a pull rope, one end of which is wound on the hub and the other end is connected with the detection plate,
and the rotary inductor is connected with the hub to rotate along with the hub, and the rotary inductor outputs an electric signal proportional to the movement distance of the pull rope.
3. The linear displacement experiment table convenient for sensor disassembly and assembly of claim 1, wherein the linear displacement experiment table further comprises a photoelectric sensor for measuring displacement of the first stroke, and the photoelectric sensor is fixed on the first mounting frame.
4. The linear displacement experiment table for facilitating sensor disassembly and assembly of claim 3, wherein the first mounting frame comprises at least two mounting holes.
5. The linear displacement test rig in accordance with claim 1, wherein the linear displacement test rig further comprises an inductive sensor for measuring displacement of a second stroke, secured to the second mounting bracket.
6. The linear displacement test rig in accordance with claim 5, wherein the linear displacement test rig further comprises an LVDT sensor for measuring displacement of a second stroke, secured to the second mounting bracket.
7. The linear displacement experiment table for facilitating sensor disassembly and assembly of claim 6, wherein the second mounting frame comprises at least two mounting holes.
8. The linear displacement experiment table convenient for sensor disassembly and assembly of claim 1, wherein the base is of an uncovered cuboid structure.
9. The linear displacement experiment table for facilitating sensor assembly and disassembly according to claim 1, wherein the first mounting frame or the second mounting frame respectively has a pin which is in clearance fit with the base.
10. The linear displacement experiment table facilitating sensor assembly and disassembly according to claim 1, wherein the first mounting frame or the second mounting frame is arranged parallel to the detection plate.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117552300A (en) * | 2024-01-11 | 2024-02-13 | 山西清泰恒环保科技有限公司 | Energy-saving engineering detection equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117552300A (en) * | 2024-01-11 | 2024-02-13 | 山西清泰恒环保科技有限公司 | Energy-saving engineering detection equipment |
| CN117552300B (en) * | 2024-01-11 | 2024-03-26 | 山西清泰恒环保科技有限公司 | Energy-saving engineering detection equipment |
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