CN214795225U - Measuring device applied to multi-sample environment switching measurement - Google Patents

Abstract

The utility model relates to a measuring device applied to multi-sample environment switching measurement, which comprises a bottom plate, a supporting system and a control system, wherein the supporting system is arranged on the bottom plate, the control system is positioned outside the side edge of the supporting system and in the middle of the supporting system, two groups of sample environment components are arranged on the supporting system, the two groups of sample environment components are respectively arranged at the upper part and the lower part of the supporting system and respectively comprise a driving system, a workbench and a supporting frame, and the workbench is arranged on the supporting system and can move along the supporting system; the driving system is positioned between the workbench and the bottom plate and is used for driving the workbench to move along the supporting system; the support frame is arranged on the workbench and used for installing and fixing the sample environment. The utility model discloses be applied to measuring device that many sample environment switches measurement has and to realize long-range automatic switch-over, and the maximize utilizes the line time, reduces the experiment of experimenter preparation time before, reduces experimenter radiation hazard to and easy operation, positioning accuracy height and bear load advantage such as big.

Description

Measuring device applied to multi-sample environment switching measurement

Technical Field

The utility model relates to a neutron bunch two dimension moving platform technical field specifically is a measuring device for be applied to many sample environment and switch measurement.

Background

The spallation neutron source is a large-scale research platform for neutron scattering research and application, and provides an advanced research platform for advanced research in fields of material science and technology, physics, chemistry and chemical engineering, resource environment, new energy, life science, medicine, nano science and the like and key problems for solving the requirements of a plurality of national major strategies.

A neutron scattering spectrometer is a device used for neutron scattering experiments and mainly detects the microstructure and the motion of substances.

The high-pressure neutron diffraction spectrometer integrates two working modes of diffraction and imaging, is configured with relatively comprehensive special pressure environment equipment, has high/low temperature and magnetic field environments at the same time, and has certain universality. The design of the spectrometer optimizes the design of a neutron light path, so that the spectrometer has two working modes of diffraction and imaging, and can obtain multi-scale sample structure information; the spectrometer is designed with two sample environments according to the requirements of different pressure devices, so that the large Q value coverage of small pressure devices and the higher resolution of large pressure devices are realized; the spectrometer utilizes a T0 chopper and a bandwidth limiting chopper to perform fast neutron background removal and neutron bandwidth selection of incident neutron beams, and simultaneously realizes multiplication of the coverage range of a d value of a 90-degree position detector by designing a chopper frequency reduction operation mode; the diffraction/imaging working mode is switched by matching a multi-segment neutron guide tube/collimator exchange system.

The interchange system realizes the switching of the sample environment through the horizontal movement of the workbench. In a common spectrometer experiment, the switching of sample environments needs to be realized through a crane in a spectrometer hall and a crane in a spectrometer; or the neutron beam current is closed firstly, then an experimenter opens the shielding door and enters the sample chamber to move the sample environment to other positions, then the required sample environment is moved to the experimental position, the installation and collimation operation is carried out, after the work is finished, the sample is placed in the sample environment, and finally the sample chamber is separated and the shielding door is closed. There is only one sample environment in the existing design.

It is highly desirable to design a device capable of carrying a plurality of sample environments and realizing remote automatic switching so as to utilize neutron beam current to the maximum extent and reduce the preparation time of experimenters before experiments.

SUMMERY OF THE UTILITY MODEL

The utility model provides a have and to realize long-range automatic switch-over, the maximize utilizes the line time, reduces the preparation time before the experimenter experiment, reduces experimenter radiation hazard to and easy operation, positioning accuracy height and bearing load are big be applied to many sample environment and switch measuring device.

In order to achieve the above purpose, the following technical solutions are provided.

A measuring device applied to multi-sample environment switching measurement comprises a bottom plate, a supporting system and a control system, wherein the supporting system is installed on the bottom plate, the control system is located outside the side edge of the supporting system and in the middle of the supporting system, two groups of sample environment assemblies are arranged on the supporting system, the two groups of sample environment assemblies are respectively installed on the upper portion and the lower portion of the supporting system, each group of sample environment assemblies comprises a driving system, a workbench and a supporting frame, and the workbench is installed on the supporting system and can move along the supporting system; the driving system is positioned between the workbench and the bottom plate and is used for driving the workbench to move along the supporting system; the supporting frame is arranged on the workbench and used for installing and fixing the sample environment; and pneumatic or electric components in the driving system are respectively connected with the control system.

Further, actuating system includes motor, shaft coupling and lead screw subassembly, the motor pass through motor support install in on the base, the motor passes through the shaft coupling and is connected with the lead screw subassembly, the lead screw subassembly includes the lead screw, the both ends of lead screw are fixed through fixing base and supporting seat respectively on the base, be equipped with the nut that screw-thread fit connects on the lead screw, the nut pass through the nut seat with the workstation is connected, specifically, the motor passes through the shaft coupling and is connected with the lead screw subassembly, transmits the power of motor output shaft for the lead screw through the shaft coupling, and the drive lead screw rotates, and the lead screw then transmits power for the workstation through nut and nut seat, realizes the horizontal migration of workstation, just also realizes the switching of sample environment in the perpendicular to bunch direction.

Furthermore, the screw rod is fixedly connected with the fixed seat through an elastic clamping ring, so that the screw rod is convenient to mount and dismount.

Further, the support system comprises a base and a guide rail assembly, wherein the base is installed on the bottom plate, and specifically, the base is fixed on the bottom plate through screws; the guide rail component is installed on the base, the guide rail component is arranged on the base in parallel and is installed by more than two guide rail bodies on the base, two groups of sample environment components are arranged on the guide rail component, the working tables in the two groups of sample environment components are respectively connected with the guide rail bodies in a sliding mode through sliding blocks, the bottom surfaces of the working tables are fixedly connected with the sliding blocks through screws, and the two working tables are installed on the same guide rail component.

Furthermore, the guide rail assembly is a three-guide-rail structure composed of three guide rail bodies distributed in parallel and comprises a reference side guide rail, a first driven side guide rail and a second driven side guide rail, and the reference side guide rail, the first driven side guide rail and the second driven side guide rail are sequentially arranged from left to right.

Further, the installation of the three-guide-rail structure adopts a dial indicator to adjust the parallelism and the straightness of the first driven side guide rail and the reference side guide rail.

Further, the control system comprises a controller, a grating system, a limit switch and a zero position switch, the grating system is installed on the side face of the workbench and the side face of the base, the limit switch and the zero position switch are installed on the upper portion of the base and located on two sides of the lead screw assembly, the limit switch is a photoelectric switch, the zero position switch is a mechanical touch switch, a limit stop block and a zero position stop block which are matched with the limit switch and the zero position switch are arranged on the bottom face of the workbench respectively, and the grating system, the limit switch and the zero position switch are connected with the controller respectively. The limit switch is in the form of a photoelectric switch, which is mounted on the top surface of the base, and a limit stopper, which is engaged with the limit switch, is mounted on the bottom surface of the table, the limit switch functions as a stroke limit, and in general, the grating system provides stroke control when the workbench operates normally, if the grating feedback system fails, the workbench does not stop when operating to a specified position and continues to move downwards, when the stop block moves to pass through the photoelectric switch, the photoelectric switch sends a signal to the motor controller to stop the motor, so that the damage of parts caused by the over-range of the whole movement is prevented, namely when the workbench moves to the limit stop block to shield the optical signal of the limit switch, the limit switch realizes the change of the electric signal, the changed information is sent to the controller, and the stroke protection is realized through the controller. The zero-position switch is mounted on the base, a zero-position stop block is arranged on the bottom surface of the workbench, the zero-position switch is a mechanical touch switch and is mounted on the top surface of the base, the zero-position stop block matched with the zero-position switch is mounted on the bottom surface of the workbench, the zero-position switch is used for recording the distance from two ends of a stroke to the zero-position switch in advance, when a reading head or a grating ruler of the grating system is damaged and needs to be replaced, the reading head or the grating ruler is replaced quickly by mechanical matching of the zero-position switch and the zero-position stop block and high repeated positioning accuracy of the zero-position switch, the whole system does not need to be realigned, and the replacement is realized only by the repeated positioning accuracy with good performance of the zero-position switch.

Furthermore, the grating system is an absolute grating system and comprises a reading head and a grating ruler, the reading head is installed on the side face of the workbench, the grating ruler is installed on the side face of the base, the controller sends demand information to the reading head, the reading head is indicated to capture the absolute position of the linear grating ruler immediately, and the switching of the sample environment is realized according to the position information of the two ends of the recording stroke of the reading head. The absolute grating system is selected, a code channel with absolute position codes is marked on the scale grating during measurement, the reading head can obtain the absolute position by reading the codes of the current position, and the purpose of controlling the stroke of the reading head is achieved through the position information of the reading head.

Further, a tank chain is installed at the cable position of the reading head, the bending radius of the tank chain is larger than the dynamic bending radius required by the cable of the reading head, and the tank chain is installed on the base through a tank chain support.

A high-precision interchange method for multi-sample environment switching is realized by the measuring device applied to multi-sample environment switching measurement, and comprises the following steps,

s1: respectively loading a first sample environment and a second sample environment on the two support frames;

s2: when a first sample environment is needed, the control system sends a signal to a motor in a second sample environment to control a workbench in which the second sample environment is located to move to one end far away from the central beam streamline;

s3: after the second sample environment reaches the designated position, the control system sends a signal to a motor in the first sample environment to control the workbench in which the first sample environment is located to move to the central beam streamline, and after the first sample environment reaches the designated position, an experiment is carried out in the first sample environment;

s4: when a second sample environment is needed, the control system sends a signal to the motor in the first sample environment to control the workbench in which the first sample environment is located to move to one end far away from the central beam streamline;

s5: after the first sample environment reaches the designated position, the control system sends a signal to a motor in the second sample environment to control the workbench in which the second sample environment is located to move to the central beam streamline, and the second sample environment starts to perform an experiment in the second sample environment after reaching the designated position;

s6: and (4) realizing the interchange of the first sample environment and the second sample environment by the circulation.

The utility model discloses be applied to many sample environment and switch measuring device compares with prior art, has following beneficial effect:

the utility model discloses technical scheme adopts the motor to drive, and control system provides position feedback to realize the position switching of high accuracy, and because the low coefficient of friction of guide rail can bear the heavy load condition and select it as braced system, compare in conventional guide rail simultaneously, the utility model discloses a three guide rail forms can bear heavier load condition, and limit switch realizes the protection to the system under the overstroke condition in addition, and zero-bit switch can realize not needing to use immediately whole system realignment after changing reading head or grating chi. More importantly, this device can realize automatic switch-over sample environment, is also that automatic switch-over holds container or space of sample, realizes long-range automatic switch-over, and the maximize utilizes the line time, reduces the experimenter and tests the preceding preparation time, does not need the experimenter to get into and carries out manual operation to it, has reduced radiation damage's risk, has improved the efficiency of experiment. To sum up, the utility model discloses technical scheme has easy operation, and repeated positioning accuracy is high, bears the heavy load ability reinforce, the switching of realization sample environment that can be convenient fast.

Drawings

Fig. 1 is a perspective view of the measuring device applied to the multi-sample environment switching measurement of the present invention;

fig. 2 is a top view of the measuring device applied to the multi-sample environment switching measurement of the present invention;

fig. 3 is a top view of the measuring device applied to the multi-sample environment switching measurement of the present invention, with the support frame and the worktable removed;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

fig. 5 is a right side view of the measuring device applied to the multi-sample environment switching measurement of the present invention.

Detailed Description

The following describes the measuring device applied to the multi-sample environment switching measurement according to the present invention in further detail with reference to the specific embodiments and the accompanying drawings.

Example 1

Referring to fig. 1, a non-limiting embodiment of the present invention, a measuring device for switching measurement of multiple sample environments, can realize the switching of two sample environments, which refer to a container or a space for containing samples. The utility model discloses be applied to measuring device that many sample environment switches over specifically includes bottom plate 100, braced system 200 and control system 300, braced system 200 installs in on bottom plate 100, control system 300 is located braced system 200 side outside and braced system 200 middle, be equipped with two sets of sample environment subassembly 400 on braced system 200, two sets of sample environment subassemblies 400 are installed respectively in braced system 200's upper portion and lower part, and each set of sample environment subassembly 400 all includes actuating system 410, workstation 420 and support frame 430, workstation 420 install in braced system 200 to can follow braced system 200 and remove; the driving system 410 is located between the workbench 420 and the base plate 100, and is used for driving the workbench 420 to move along the support system 200; the supporting frame 430 is installed on the workbench 420 and used for installing and fixing the sample environment; pneumatic or electric components in the driving system 410 are respectively connected with the control system 300. The two sets of sample environment assemblies 400 are arranged, so that the interchange system is provided with two sets of driving systems 410, two sets of working tables 420 and two sets of supporting frames 430, a first sample environment and a second sample environment are respectively installed on the two supporting frames 430, the two sets of working tables 420 share one supporting system 200 and a control system 300, and the two sets of working tables 420 are controlled by the control system 300 to jointly work, so that the first sample environment and the second sample environment are rapidly switched.

Referring to fig. 1 to 3, in a non-limiting embodiment of the present invention, the supporting system 200 includes a base 210 and a rail assembly 220, wherein the base 210 is installed on the base plate 100, and specifically, the base 210 is fixed on the base plate 100 by screws; guide rail assembly 220 install in on the base 210, guide rail assembly 220 is by more than two parallel distribution and install guide rail body on the base 210 constitutes, be equipped with two sets of sample environment subassemblies 400 on guide rail assembly 220, workstation 420 in two sets of sample environment subassemblies 400 respectively through slider 230 and guide rail body sliding connection, workstation 420 bottom surface passes through screw and slider 230 fixed connection, and two workstations 420 are installed on same guide rail assembly 220. The guide rail assembly 220 is a three-guide-rail structure formed by three guide rail bodies distributed in parallel, and comprises a reference side guide rail 221, a first driven side guide rail 222 and a second driven side guide rail 223, so that a larger load can be borne, the reference side guide rail 221, the first driven side guide rail 222 and the second driven side guide rail 223 are named from left to right in sequence, during installation, the reference side guide rail 221 is installed first, then the second driven side guide rail 223 is installed, and finally the first driven side guide rail 222 between the reference side guide rail 221 and the second driven side guide rail 223 and the workbench 420 are installed as follows.

The reference side rail 221 mounting method of the present embodiment: first, it is necessary to remove burrs, impact scars, and dirt on the installation surface of the machine to be installed before installation, then the reference side rail 221 is lightly placed on the base 210, the assembly bolt is not completely locked to lightly abut the reference side rail 221 against the installation surface, that is, the reference side of the reference side rail 221 against the installation surface on the base 210, and then the set screws are tightened from the screw holes in the side surface of the base 210 in a predetermined order to abut the reference side of the reference side rail 221 against the installation surface of the base 210, and then the bolt is tightened with a predetermined torque using a torque wrench.

Second driven side guide 223 mounting manner of the present embodiment: the second driven side rail 223 is first placed along the threaded hole on the base 21030, then the fitting bolt is not completely locked, next a standard straight ruler is placed between the two reference side rails 22114 and the second driven side rail 223, the second driven side rail 223 is adjusted to be parallel to the reference side of the reference side rail 221 by a dial gauge, next the straightness of the second driven side rail 223 is adjusted by the dial gauge with the standard straight ruler as a reference, and the fitting bolt is fixed in order from the shaft end.

First driven side rail 222 mounting manner of the present embodiment: first, the table 420 is mounted on the sliders 230 of the reference side rail 221, which has been correctly installed, in cooperation with the incompletely locked first driven side rail 222, then the 3 sliders 230 of the reference side rail 221 are completely locked with one of the sliders 230 of the first driven side rail 222, then the sliders 230 of the remaining first driven side rail 222 are incompletely locked, and then the table 420 is moved to confirm the operation resistance while sequentially completely locking the assembly bolts of the first driven side rail 222.

Referring to fig. 1 to 4, a non-limiting embodiment of the present invention, the embodiment takes a first sample environment as an example to describe in detail a driving system 410, the driving system 410 includes a motor 411, a coupler 413 and a lead screw assembly, the motor 411 is installed at one end of the base 210 through a motor bracket 412, the motor 411 is fixed on the motor bracket 412 through a screw, the motor bracket 412 is fixed on the base 210 through a screw, the motor 411 is connected with the lead screw assembly through the coupler 413, the lead screw assembly includes a lead screw 415, two ends of the lead screw 415 are respectively fixed on the base 210 through a fixing seat 414 and a supporting seat 416, wherein the lead screw 415 is connected and fixed with the fixing seat 414 through an elastic collar 418 for convenient installation and disassembly, a nut in threaded fit connection is arranged on the lead screw 415, and the nut is connected with the working table 420 through a nut seat 417, specifically, the motor 411 is connected with the lead screw assembly through a coupler 413, the power of an output shaft of the motor 411 is transmitted to the lead screw 415 through the coupler 413, the lead screw 415 is driven to rotate, the lead screw 415 further transmits the power to the workbench 420 through the nut and the nut seat 417, that is, the rotation motion of the axis of the lead screw 415 is converted into the linear motion of the nut along the axis of the lead screw 415 through the threaded matching of the lead screw 415 and the nut, and then the horizontal movement of the first sample environment connected with the workbench 420 in the direction perpendicular to the beam current is realized.

Referring to fig. 1 to 5, in this embodiment, the detailed description of the control system 300 is performed by taking the second sample environment as an example, the control system 300 includes a controller, a grating system 310, a limit switch 320 and a zero switch 330, and further includes a hard limit device 340340 disposed on the bottom plate, the grating system 310 is mounted on the side of the worktable 420 and the side of the base 210, and the limit switch 320 and the zero switch 330 are mounted on the upper portion of the base 210 and located on two sides of the screw rod assembly. The grating system 310 comprises a reading head 311 and a grating scale 312, the grating scale 312 is fixedly mounted on the side surface of the base 210 through glue, the reading head 311 is mounted on the side surface of the workbench 420 through a reading head 311 support, and the reading head 311 reads scales on the grating scale 312, so that the high-precision positioning of the whole moving system is realized. In this embodiment, the grating system 310 is an absolute grating system 310, the absolute grating system 310 is selected, a code track with an absolute position code is marked on the scale grating during measurement, and the reading head 311 can obtain an absolute position by reading the code at the current position and achieve the purpose of controlling the stroke thereof through the position information thereof. Specifically, the absolute grating can directly obtain the absolute position after being restarted without executing the operation of returning the reference point to zero, and the calculation of the position is completed in the reading head 311 without a subsequent subdivision circuit, thereby simplifying the design of the control system 300 and improving the reliability and the working efficiency of the system.

Taking the second sample environment as an example, in this embodiment, the limit switch 320 is fixed on a limit switch 320 support, the limit switch 320 supports are fixed on the base 210 through screws and are respectively located at two ends of the workbench 420, a limit stop 321 is fixed on a bottom surface of the workbench 420, the limit switch 320 is a photoelectric switch and plays a role of limiting a stroke, in a normal condition, when the workbench 420 normally operates, the grating system 310 provides control of the stroke, that is, the workbench 420 reciprocates in the working stroke under feedback control of the grating system 310 and the control system 300, when the grating system 310 or the control system 300 fails, the workbench 420 does not stop when operating to a specified position and continues to move downwards, when the limit stop 321 moves to the limit switch 320, the photoelectric switch is triggered to send a signal to the controller, so that the motor 411 stops and the workbench 420 stops, the damage to the whole system due to the over-travel of the workbench 420 is prevented, and further the damage to parts due to the over-range of the whole motion is prevented, that is, when the workbench 420 moves to the limit stop 321 to block the optical signal of the limit switch 320, the limit switch 320 realizes the change of the electrical signal, and sends the changed information to the controller, and the stroke protection is realized through the controller.

Taking the first sample environment as an example, in this embodiment, the zero-position switch 330 is fixed on a zero-position switch 330 support, the zero-position switch 330 support is fixed on the base 210 through screws and is located on one side of the workbench 420, which is far away from the beam central line, a zero-position stop 331 is arranged on the bottom surface of the workbench 420, and the zero-position switch 330 is a mechanical touch switch, so that when the grating system 310 needs to be replaced, the whole system does not need to be re-collimated, and only the stroke position of the workbench 420 on the beam central line needs to be determined through the current position of the zero-position switch 330 and the previously recorded stroke and depending on good position repetition accuracy. The working principle is that after the whole system is installed and aligned, the feedback of the limit switch 320 is cancelled at the controller end, the sample environment center on the worktable 420 is moved to the vicinity of the beam central line, the grating system 310 records the scale value on the grating scale 312 at the moment, then the sample environment on the stage 420 is moved to the end far from the central beam line, the scale value on the grating scale 312 at that time is recorded through the grating system 310, and then the stage 420 is moved until the null switch 330 is triggered, the scale value on the grating scale 312 at that time is recorded, and the stroke difference between the center beam stream line to the zero position switch 330 and the end far away from the center beam stream line to the zero position switch 330 is recorded, the feedback of the limit switch 320 is recovered, then the whole system works normally, and then when a problem occurs in the raster system 310 or the encoding system, the above-mentioned problem part is replaced according to the above operation.

Taking the first sample environment as an example, the position relationship among the limit switch 320, the null switch 330 and the hard limit device 340 on the base 210 in the control system 300 of the present embodiment should be determined according to the selected form of the components and the specific function. In this embodiment, the limit switch 320 is an optoelectronic switch, the zero position switch 330 is a mechanical touch switch, the hard limit device 340 is a slot on the base 210, and according to the above selected component form, the stroke range of the zero position switch 330 is larger than that of the limit switch 320, because the limit switch 320 is an optoelectronic type, after being triggered, the working platform 420 can continue to move without damaging the limit switch 320, but the zero position switch 330 is mechanically triggered, which has a requirement on stroke, and when exceeding the working stroke, the non-repairable damage can be caused to the working platform, and because the hard limit device 340 forces the working platform 420 to stop when the grating system 310, the controller and the limit switch 320 fail at the same time, so as to avoid damaging the components of the whole system, and under this condition, the position relationship among the three is that the stroke range of the limit switch 320 is minimum, the range of travel of the zero switch 330 is next to the maximum range of travel of the hard limit switch 320, but the range of travel of the hard limit switch 320 is within the limits of the zero switch 330.

Taking the first sample environment as an example, the cable of the reading head 311 of the raster system 310 in the control system 300 of the present embodiment has requirements of dynamic bending radius and static bending radius, so that a tank chain needs to be placed at the cable of the reading head 311, the bending radius of the tank chain is larger than the dynamic bending radius required by the cable of the reading head 311, and since the bending radius of the tank chain is smaller than the distance from the top of the base 210 to the bottom of the workbench 420, a tank chain support is needed to assist in fixing when the tank chain is fixed, so as to achieve a given bending radius.

Example 2

The method for switching the sample environment by using the measuring device applied to the multi-sample environment switching measurement comprises the following steps,

s1: respectively loading a first sample environment and a second sample environment on two support frames 430;

s2: when a first sample environment is needed, the control system 300 sends a signal to the motor 411 in a second sample environment, and controls the workbench 420 in which the second sample environment is located to move to one end far away from the central beam streamline;

s3: after the second sample environment reaches the designated position, the control system 300 sends a signal to the motor 411 in the first sample environment to control the workbench 420 where the first sample environment is located to move to the central beam streamline, and after the first sample environment reaches the designated position, an experiment is performed in the first sample environment;

s4: when a second sample environment is needed, the control system 300 sends a signal to the motor 411 in the first sample environment, and controls the workbench 420 where the first sample environment is located to move to one end far away from the central beam streamline;

s5: after the first sample environment reaches the designated position, the control system 300 sends a signal to the motor 411 in the second sample environment, controls the workbench 420 where the second sample environment is located to move to the central beam streamline, and starts to perform an experiment in the second sample environment after the second sample environment reaches the designated position;

s6: and (4) realizing the interchange of the first sample environment and the second sample environment by the circulation.

Referring to fig. 1 to 5, compared with the prior art, the utility model discloses be applied to measuring device that many sample environment switches measurement, following beneficial effect has:

the utility model discloses technical scheme adopts motor 411 to drive, and control system 300 provides position feedback to realize the position switching of high accuracy, and because the low coefficient of friction of guide rail can bear the heavy load condition and select it as braced system 200, compare in conventional guide rail simultaneously, the utility model discloses a three guide rail forms can bear heavier load condition, and limit switch 320 realizes the protection to the system under the overtravel condition in addition, and zero-position switch 330 can realize not needing to use immediately whole system realignment after changing reading head 311 or grating chi 312. More importantly, this device can realize automatic switch-over sample environment, is also that automatic switch-over holds container or space of sample, does not need the experimenter to get into and carries out manually operation to it, has reduced radiation damage's risk, has improved the efficiency of experiment. To sum up, the utility model discloses technical scheme has easy operation, and repeated positioning accuracy is high, bears the heavy load ability reinforce, the switching of realization sample environment that can be convenient fast.

In the description of the present invention, it is to be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are used for indicating orientations or positional relationships based on those shown in the drawings, and are used only for convenience of description and for simplicity of description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first", "second", may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present application, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The above embodiments are only specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, many variations and modifications are possible without departing from the inventive concept, and such obvious alternatives fall within the scope of the invention.

Claims (7)

1. The utility model provides a be applied to measuring device that many sample environment switches measurement which characterized in that: the device comprises a bottom plate, a supporting system and a control system, wherein the supporting system is arranged on the bottom plate, the control system is positioned outside the side edge of the supporting system and in the middle of the supporting system, two groups of sample environment assemblies are arranged on the supporting system, the two groups of sample environment assemblies are respectively arranged at the upper part and the lower part of the supporting system, each group of sample environment assemblies comprises a driving system, a workbench and a supporting frame, and the workbench is arranged on the supporting system and can move along the supporting system; the driving system is positioned between the workbench and the bottom plate and is used for driving the workbench to move along the supporting system; the supporting frame is arranged on the workbench and used for installing and fixing the sample environment; pneumatic or electric components in the driving system are respectively connected with the control system;

the driving system comprises a motor, a coupler and a screw rod assembly, the motor is mounted on a base through a motor support, the motor is connected with the screw rod assembly through the coupler, the screw rod assembly comprises a screw rod, two ends of the screw rod are respectively fixed on the base through a fixing seat and a supporting seat, a nut in threaded fit connection is arranged on the screw rod, and the nut is connected with the workbench through a nut seat;

the supporting system comprises a base and a guide rail assembly, wherein the base is installed on the bottom plate, the guide rail assembly is installed on the base, the guide rail assembly is formed by more than two guide rail bodies which are distributed in parallel and installed on the base, two groups of sample environment assemblies are arranged on the guide rail assembly, and work tables in the two groups of sample environment assemblies are respectively connected with the guide rail bodies in a sliding mode through sliding blocks.

2. The measurement device applied to switching measurement of multiple sample environments as claimed in claim 1, wherein the screw rod is connected and fixed with the fixing seat through an elastic collar.

3. The measurement device applied to the multi-sample environment switching measurement according to claim 2, wherein the guide rail assembly has a three-rail structure formed by three parallel guide rail bodies, and the three-rail structure comprises a reference side guide rail, a first driven side guide rail and a second driven side guide rail, and the reference side guide rail, the first driven side guide rail and the second driven side guide rail are sequentially arranged from left to right.

4. The measurement device applied to the multi-sample environment switching measurement according to claim 3, wherein the three-rail structure is installed by using a dial indicator to adjust the parallelism and the straightness of the first driven side rail and the reference side rail.

5. The measurement device applied to multi-sample environment switching measurement according to claim 1, wherein the control system comprises a controller, a grating system, a limit switch and a zero switch, the grating system is installed on the side surface of the workbench and the side surface of the base, the limit switch and the zero switch are installed on the upper portion of the base and located on two sides of the lead screw assembly, the limit switch is a photoelectric switch, the zero switch is a mechanical touch switch, the bottom surface of the workbench is provided with a limit stop and a zero stop which are respectively matched with the limit switch and the zero switch, and the grating system, the limit switch and the zero switch are respectively connected with the controller.

6. The measurement device as claimed in claim 5, wherein the grating system is an absolute grating system, and includes a reading head and a grating ruler, the reading head is installed on the side of the worktable, the grating ruler is installed on the side of the base, the controller sends the required information to the reading head, the reading head is instructed to capture the absolute position of the linear grating ruler immediately, and the switching of the sample environment is realized according to the position information at the two ends of the recording stroke of the reading head.

7. The measurement device applied to the multi-sample environment switching measurement according to claim 6, wherein a tank chain is installed at the cable of the reading head, the bending radius of the tank chain is larger than the dynamic bending radius required by the cable of the reading head, and the tank chain is installed on the base through a tank chain support.

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