CN210221215U - Level instrument calibration device - Google Patents
Level instrument calibration device Download PDFInfo
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- CN210221215U CN210221215U CN201921350159.0U CN201921350159U CN210221215U CN 210221215 U CN210221215 U CN 210221215U CN 201921350159 U CN201921350159 U CN 201921350159U CN 210221215 U CN210221215 U CN 210221215U
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- clamping
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Abstract
The utility model discloses a material level instrument calibration device, which comprises a sliding track mechanism, a sliding driving mechanism, a universal instrument mounting mechanism and a reflecting plate mechanism; the sliding driving mechanism comprises a sliding driving screw rod, a driving motor and a motor reducer; the reflecting plate mechanism comprises a sliding supporting plate, a plate bracket and a reflecting plate; the instrument installation mechanism comprises a longitudinal installation beam, a vertical square column, an instrument placing plate, a lifting driving assembly and a clamping driving assembly. The level instrument calibration device drives the reflecting plate to perform accurate displacement driving by utilizing the sliding driving screw rod, so that the displacement resolution of the reflecting plate can be effectively improved; the arc chamfers arranged on the peripheral edges of the reflecting plate can reduce edge reflection and reduce electromagnetic wave reflection caused by abrupt change of impedance of the edges; the instrument to be verified can be clamped by utilizing the lifting driving assembly, and the transmitting signal of the instrument to be verified is close to the center of the reflecting plate through adjustment.
Description
Technical Field
The utility model relates to an instrument calibration equipment, especially a material level instrument calibration equipment.
Background
The liquid level meter is a measuring instrument for measuring a liquid level value, and the production process of the reflection type liquid level meter is mature along with the development of ultrasonic wave and radar detection technology in recent years. The device has the characteristics of large measurement range, small volume, no mutual contact and no mutual interference with the measured liquid, high automation degree, good stability, high accuracy and the like, so that the device is widely applied. Therefore, the reflective liquid level meter is subjected to verification, calibration and detection work, the accuracy of the quantity value and the reliability of the performance are ensured, and the reflective liquid level meter is important work related to aspects of trade settlement, production safety, environmental protection and the like.
At present, the main problems of the simulation device for level verification include: (1) the distance of the equipment for fixing the position of the reflecting plate can be far but the calibration of any position cannot be carried out; (2) most of the methods adopt a laser comparison method, and the verification accuracy is not high enough; (3) the reflecting surface is too small, so that the edge reflection of the reflecting plate can be superposed into the echo, and certain influence is caused on the accuracy. Therefore, there is a need to design a level meter calibration device, which has high calibration accuracy and can effectively reduce the superposition of edge reflection to echo.
Disclosure of Invention
Utility model aims to: the level instrument calibration device has high calibration precision and can effectively reduce the superposition of edge reflection to echo.
The technical scheme is as follows: the utility model relates to a material level instrument calibration device, which comprises a sliding track mechanism, a sliding driving mechanism, an instrument mounting mechanism and a reflecting plate mechanism;
the sliding driving mechanism comprises a sliding driving screw rod, a driving motor and a motor reducer; the sliding driving screw rod is rotatably arranged on the sliding track mechanism through two screw rod seats; the driving motor is used for driving the motor reducer to rotate; the motor reducer is installed on the sliding driving screw rod in a butt joint mode through a connector and used for driving the sliding driving screw rod to rotate;
the reflecting plate mechanism comprises a sliding supporting plate, a plate bracket and a reflecting plate; the plate bracket is arranged on the sliding support plate; the reflecting plate is vertically arranged on the plate bracket, and the edges of the periphery of the reflecting plate are provided with arc chamfers; the sliding support plate is arranged on the sliding track mechanism in a sliding manner, and a screw rod pair is fixedly arranged below the sliding support plate; the sliding driving screw rod is arranged on the screw rod pair in a screwing manner and is used for driving the reflecting plate to slide along the sliding track mechanism;
the instrument mounting mechanism comprises a longitudinal mounting beam, a vertical square column, an instrument placing plate, a lifting driving assembly and a clamping driving assembly; the longitudinal mounting beam is mounted on the sliding track mechanism; the vertical square column is vertically arranged on the end part of the longitudinal mounting beam; the lifting driving assembly is installed on the vertical square column, the instrument placing plate is installed on the lifting driving assembly, and the lifting driving assembly drives the instrument placing plate to move up and down; the clamping driving assembly is installed on the instrument placing plate and used for clamping and fixing the instrument to be verified.
Further, the sliding track mechanism comprises two transverse beams, two sliding tracks and support feet arranged below the two transverse beams; the two transverse beams are transversely and parallelly arranged, and at least two longitudinal connecting beams are arranged between the two transverse beams; the two sliding rails are respectively and transversely arranged above the two transverse beams; the sliding support plate and the longitudinal installation beam are both arranged on the two sliding tracks in a sliding mode through the track sliding seat.
Furthermore, two ends of each transverse beam are respectively provided with a screw rod mounting plate; the two screw rod seats are respectively and fixedly arranged on the two screw rod mounting plates; the track sliding seat is arranged on the lower side surface of the sliding support plate.
Furthermore, the lifting driving assembly comprises a lifting driving screw, an upper end clamping seat and a lifting sliding seat; the upper end clamping seat is fixedly arranged on the top end of the vertical square column; a square sliding sleeve hole is vertically arranged on the lifting sliding seat; the lifting sliding seat is slidably mounted on the vertical square column through a square sliding sleeve hole, and a lifting driving support is arranged on the side surface of the lifting sliding seat; a lifting driving threaded hole is vertically formed in the lifting driving support; the lifting driving screw is rotatably arranged on the upper end clamping seat, and the upper end of the lifting driving screw is provided with a driving crank; the lifting driving screw is screwed on the lifting driving threaded hole; the instrument is placed board horizontal installation and is slided the side of seat at the lift.
Furthermore, an inclined reinforcing rod is fixedly arranged between the vertical square column and the longitudinal mounting beam; a triangular rib plate is arranged at the mounting position of the instrument placing plate and the lifting sliding seat.
Further, the clamping driving assembly comprises a clamping driving bolt and two clamping units which are oppositely arranged; the clamping unit comprises a lower thread driving seat, a clamping plate, a lifting inserting strip with a T-shaped section and a lifting locking bolt; a strip-shaped guide hole parallel to the longitudinal mounting beam is formed in the instrument placing plate, and two sliding guide blocks are slidably mounted in the strip-shaped guide hole; the upper and lower side surfaces of the sliding guide block are respectively provided with a sliding upper supporting plate and a sliding lower supporting plate; a central support is arranged at the center of the lower side surface of the instrument placing plate; the middle part of the clamping driving bolt is rotatably arranged on the central support, and the clamping driving bolt is parallel to the strip-shaped guide hole; the thread directions of the clamping driving bolts at the two sides of the central support are opposite; the lower thread driving seats of the two clamping units are respectively and fixedly arranged on the two sliding lower supporting plates; the two lower thread driving seats are both screwed on the clamping driving bolt through the clamping driving threaded holes, and are respectively positioned on two sides of the central support; the clamping plates of the two clamping units are respectively vertically arranged on the two sliding upper supporting plates, and T-shaped lifting chutes are vertically arranged on the opposite inner side surfaces of the two clamping plates; the lifting inserting bar is inserted into the T-shaped lifting sliding groove of the corresponding clamping unit in a sliding manner; the lifting locking bolt is installed on the outer side face of the clamping plate in a threaded screwing mode, and the end portion of the lifting locking bolt extends into the T-shaped lifting sliding groove and presses the side face of the lifting inserting strip.
Furthermore, a strip-shaped hinge groove is vertically formed in each of the opposite inner side surfaces of the two lifting cuttings; an arc-shaped pressing plate is hinged and mounted at the strip-shaped hinge grooves on the two sides; the two arc-shaped pressing plates extend obliquely towards the upper part of the center of the instrument placing plate; a pressing spring is arranged between the arc-shaped pressing plate and the lifting inserting bar on the corresponding side; bottom rubber pads are arranged on the upper side surface of the instrument placing plate and positioned on two sides of the strip-shaped guide hole; side rubber pads are arranged on the inner side surface of the clamping plate and positioned on two sides of the T-shaped lifting chute; a top rubber pad is arranged on the inner arc surface of the arc-shaped pressing plate.
Compared with the prior art, the utility model, its beneficial effect is: the sliding driving screw rod is used for driving the reflecting plate to carry out accurate displacement driving, so that the displacement resolution of the reflecting plate can be improved to be more than 0.1 mm; the arc chamfers arranged on the peripheral edges of the reflecting plate can reduce edge reflection and reduce electromagnetic wave reflection caused by abrupt change of impedance of the edges; the clamping driving assembly is utilized to conveniently clamp various types of instruments to be verified, so that the general performance of the verification device is effectively enhanced; the instrument to be verified can be clamped by utilizing the lifting driving assembly, and the transmitting signal of the instrument to be verified is close to the center of the reflecting plate through adjustment.
Drawings
FIG. 1 is a schematic structural view of a slide driving mechanism and a reflection plate mechanism of the present invention;
fig. 2 is a schematic structural view of the instrument mounting mechanism of the present invention.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example 1:
as shown in fig. 1 and 2, the utility model discloses a level instrument calibration device includes: the device comprises a sliding track mechanism, a sliding driving mechanism, an instrument mounting mechanism and a reflecting plate mechanism;
the sliding driving mechanism comprises a sliding driving screw rod 3, a driving motor 6 and a motor reducer 5; the sliding driving screw rod 3 is rotatably arranged on the sliding track mechanism through two screw rod seats 11; the driving motor 6 is used for driving the motor reducer 5 to rotate; the motor reducer 5 is installed on the sliding driving screw rod 3 in a butt joint mode through a connector 13 and used for driving the sliding driving screw rod 3 to rotate;
the reflecting plate mechanism comprises a sliding supporting plate 8, a plate bracket 9 and a reflecting plate 4; the plate bracket 9 is arranged on the sliding support plate 8; the reflecting plate 4 is vertically arranged on the plate bracket 9, and the edge of the periphery of the reflecting plate 4 is provided with an arc chamfer; the sliding support plate 8 is arranged on the sliding track mechanism in a sliding way, and a screw rod pair 12 is fixedly arranged below the sliding support plate 8; the sliding driving screw rod 3 is rotatably installed on the screw rod pair 12 and used for driving the reflecting plate 4 to slide along the sliding track mechanism;
the instrument mounting mechanism comprises a longitudinal mounting beam 16, a vertical square column 18, an instrument placing plate 25, a lifting driving assembly and a clamping driving assembly; the longitudinal mounting beam 16 is mounted on the sliding track mechanism; the vertical square column 18 is vertically arranged on the end part of the longitudinal mounting beam 16; the lifting driving assembly is arranged on the vertical square column 18, the instrument placing plate 25 is arranged on the lifting driving assembly, and the lifting driving assembly drives the instrument placing plate 25 to move up and down; the clamping driving assembly is arranged on the instrument placing plate 25 and used for clamping and fixing the instrument to be verified.
The sliding driving screw rod 3 is used for driving the reflecting plate 4 to carry out accurate displacement driving, so that the displacement resolution of the reflecting plate can be improved to be more than 0.1 mm; the arc chamfers arranged on the peripheral edges of the reflecting plate 4 can reduce edge reflection and reduce electromagnetic wave reflection caused by abrupt change of impedance of the edges; the clamping driving assembly is utilized to conveniently clamp various types of instruments to be verified, so that the general performance of the verification device is effectively enhanced; the instrument to be verified can be clamped by utilizing the lifting driving assembly, and the transmitting signal of the instrument to be verified is close to the center of the reflecting plate 4 through adjustment.
Further, the sliding track mechanism comprises two transverse beams 1, two sliding tracks 15 and support feet 14 arranged below the two transverse beams 1; the two transverse beams 1 are transversely and parallelly arranged, and at least two longitudinal connecting beams 2 are arranged between the two transverse beams 1; the two sliding rails 15 are respectively and transversely arranged above the two transverse beams 1; the sliding support plate 8 and the longitudinal installation beam 16 are both arranged on the two sliding rails 15 in a sliding way through rail sliding seats 17. The structural strength can be enhanced by using a plurality of longitudinal connecting beams 2.
Further, two ends of each transverse beam 1 are respectively provided with a screw rod mounting plate 10; the two screw rod seats 11 are respectively and fixedly arranged on the two screw rod mounting plates 10; the rail sliding seat 17 is arranged on the lower side surface of the sliding support plate 8.
Further, the lifting driving assembly comprises a lifting driving screw 21, an upper end clamping seat 20 and a lifting sliding seat 22; the upper end clamping seat 20 is fixedly arranged on the top end of the vertical square column 18; a square sliding sleeve hole is vertically arranged on the lifting sliding seat 22; the lifting sliding seat 22 is slidably mounted on the vertical square column 18 through a square sliding sleeve hole, and a lifting driving support 23 is arranged on the side surface of the lifting sliding seat 22; a lifting driving threaded hole is vertically formed in the lifting driving support 23; the lifting driving screw 21 is rotatably arranged on the upper end clamping seat 20, and the upper end of the lifting driving screw 21 is provided with a driving crank 24; the lifting driving screw 21 is screwed on the lifting driving threaded hole; the instrument placing plate 25 is horizontally installed on the side of the elevation sliding base 22. The instrument placing plate 25 can be driven to move up and down by utilizing the lifting sliding seat 22, the lifting driving support 23, the lifting driving screw 21 and the driving crank 24, so that the placed instrument to be checked is subjected to height adjustment, the requirement on the difference of the appearance structures of various instruments with checking is met, and the transmitting signals are ensured to be close to the center of the reflecting plate 4 as much as possible.
Further, an inclined reinforcing rod 19 is fixedly installed between the vertical square column 18 and the longitudinal installation beam 16; a triangular rib plate 26 is arranged at the mounting position of the instrument placing plate 25 and the lifting sliding seat 22. The structural strength between the vertical square column 18 and the longitudinal installation beam 16 can be enhanced by using the inclined reinforcing rods 19; the structural strength between the instrument placement board 25 and the lifting slide base 22 can be enhanced by the triangular rib plate 26.
Further, the clamping driving assembly comprises a clamping driving bolt 29 and two oppositely arranged clamping units; the clamping unit comprises a lower thread driving seat 30, a clamping plate 33, a lifting cutting bar 35 with a T-shaped section and a lifting locking bolt 34; a strip-shaped guide hole 27 parallel to the longitudinal mounting beam 16 is arranged on the instrument placing plate 25, and two sliding guide blocks are slidably mounted in the strip-shaped guide hole 27; the upper and lower side surfaces of the sliding guide block are respectively provided with a sliding upper supporting plate 32 and a sliding lower supporting plate 31; a center support 28 is provided at the center of the lower side surface of the instrument placement board 25; the middle part of the clamping driving bolt 29 is rotatably arranged on the central support 28, and the clamping driving bolt 29 is parallel to the strip-shaped guide hole 27; the thread directions of the clamping driving bolts 29 on the two sides of the central support 28 are opposite; the lower thread driving seats 30 of the two clamping units are respectively and fixedly arranged on the two sliding lower supporting plates 31; the two lower thread driving seats 30 are both screwed on the clamping driving bolt 29 through the clamping driving threaded holes, and the two lower thread driving seats 30 are respectively positioned on two sides of the central support 28; the clamping plates 33 of the two clamping units are respectively vertically arranged on the two sliding upper supporting plates 32, and T-shaped lifting chutes are vertically arranged on the opposite inner side surfaces of the two clamping plates 33; the lifting inserting bar 35 is inserted in the T-shaped lifting sliding groove of the corresponding clamping unit in a sliding manner; the lifting locking bolt 34 is screwed on the outer side surface of the clamping plate 33, and the end part of the lifting locking bolt 34 extends into the T-shaped lifting chute and presses on the side surface of the lifting insert 35. The instrument to be verified is ensured to be always positioned at the central position by synchronously moving the two clamping units oppositely arranged towards the center under the driving action of the clamping driving bolt 29; the stability during sliding can be ensured by utilizing the sliding upper supporting plate 32 and the sliding lower supporting plate 31; the T-shaped lifting sliding groove, the lifting inserting strip 35 and the lifting locking bolt 34 are used for forming a clamping height adjusting mechanism, and the requirement of the instrument to be verified on the clamping height can be met.
Further, a strip-shaped hinge groove 36 is vertically formed in each of the opposite inner side surfaces of the two lifting cuttings 35; an arc-shaped pressing plate 37 is hinged and installed at the strip-shaped hinge grooves 36 at the two sides; the two arc-shaped pressing plates 37 extend obliquely towards the upper center of the instrument placing plate 25; a pressing spring 38 is arranged between the arc-shaped pressing plate 37 and the lifting inserting bar 35 on the corresponding side; bottom rubber pads 40 are arranged on the upper side surface of the instrument placing plate 25 and positioned on two sides of the strip-shaped guide hole 27; side rubber pads 39 are arranged on the inner side surface of the clamping plate 33 and positioned on two sides of the T-shaped lifting chute; a top rubber pad 41 is arranged on the inner arc surface of the arc-shaped pressing plate 37. The top of the instrument to be verified placed on the instrument placing plate 25 can be pressed from the tops of two sides by utilizing the arc-shaped pressing plates 37 which are hinged, and a certain elastic pressing strength is ensured to be always kept through the pressing springs 38; the bottom rubber pad 40, the side rubber pads 39 and the top rubber pad 41 can play a role in anti-skidding and elastic support, so that the instrument to be checked has good stability after being clamped.
The utility model discloses a level instrument calibration equipment is when using: to treat that the check-up instrument is placed on instrument placing plate 25, rotation regulation centre gripping drive bolt 29, utilize two grip blocks 33 to treat that the check-up instrument carries out the centre gripping from both sides, and can ensure to treat that the check-up instrument is located instrument placing plate 25 center department, adjust lift cutting 35 from top to bottom again, make the inboard cambered surface of arc clamp plate 37 press on treating check-up instrument top side, rethread lift locking bolt 34 locks fixedly, rethread drive crank 24 rotation lift drive screw 21, thereby adjust the height that the instrument placed plate 25, finally make the transmitted signal who treats the check-up instrument be close to reflecting plate 4 center department as far as possible.
As mentioned above, although the present invention has been shown and described with reference to certain preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A level instrument calibration device is characterized in that: the device comprises a sliding track mechanism, a sliding driving mechanism, an instrument mounting mechanism and a reflecting plate mechanism;
the sliding driving mechanism comprises a sliding driving screw rod (3), a driving motor (6) and a motor reducer (5); the sliding driving screw rod (3) is rotatably arranged on the sliding track mechanism through two screw rod seats (11); the driving motor (6) is used for driving the motor reducer (5) to rotate; the motor reducer (5) is installed on the sliding driving screw rod (3) in a butt joint mode through a connector (13) and is used for driving the sliding driving screw rod (3) to rotate;
the reflecting plate mechanism comprises a sliding supporting plate (8), a plate bracket (9) and a reflecting plate (4); the plate bracket (9) is arranged on the sliding support plate (8); the reflecting plate (4) is vertically arranged on the plate bracket (9), and the peripheral edge of the reflecting plate (4) is provided with an arc chamfer; the sliding support plate (8) is arranged on the sliding track mechanism in a sliding way, and a screw rod pair (12) is fixedly arranged below the sliding support plate (8); the sliding driving screw rod (3) is rotatably installed on the screw rod pair (12) and used for driving the reflecting plate (4) to slide along the sliding track mechanism;
the instrument mounting mechanism comprises a longitudinal mounting beam (16), a vertical square column (18), an instrument placing plate (25), a lifting driving assembly and a clamping driving assembly; the longitudinal mounting beam (16) is mounted on the sliding track mechanism; the vertical square column (18) is vertically arranged on the end part of the longitudinal mounting beam (16); the lifting driving assembly is installed on the vertical square column (18), the instrument placing plate (25) is installed on the lifting driving assembly, and the lifting driving assembly drives the instrument placing plate (25) to move up and down; the clamping driving assembly is arranged on the instrument placing plate (25) and used for clamping and fixing the instrument to be verified.
2. A level gauge verification device according to claim 1, wherein: the sliding track mechanism comprises two transverse beams (1), two sliding tracks (15) and support feet (14) arranged below the two transverse beams (1); the two transverse beams (1) are transversely and parallelly arranged, and at least two longitudinal connecting beams (2) are arranged between the two transverse beams (1); the two sliding rails (15) are respectively and transversely arranged above the two transverse beams (1); the sliding support plate (8) and the longitudinal installation beam (16) are both arranged on the two sliding tracks (15) in a sliding way through the track sliding seat (17).
3. A level gauge verification device according to claim 2, wherein: two ends of each transverse beam (1) are respectively provided with a screw rod mounting plate (10); the two screw rod seats (11) are respectively and fixedly arranged on the two screw rod mounting plates (10); the rail sliding seat (17) is arranged on the lower side surface of the sliding support plate (8).
4. A level gauge verification device according to claim 3, wherein: the lifting driving component comprises a lifting driving screw rod (21), an upper end clamping seat (20) and a lifting sliding seat (22); the upper end clamping seat (20) is fixedly arranged on the top end of the vertical square column (18); a square sliding sleeve hole is vertically arranged on the lifting sliding seat (22); the lifting sliding seat (22) is arranged on the vertical square column (18) in a sliding way through a square sliding sleeve hole, and a lifting driving support (23) is arranged on the side surface of the lifting sliding seat (22); a lifting driving threaded hole is vertically formed in the lifting driving support (23); the lifting driving screw rod (21) is rotatably arranged on the upper end clamping seat (20), and the upper end of the lifting driving screw rod (21) is provided with a driving crank (24); the lifting driving screw (21) is screwed on the lifting driving threaded hole; the instrument placing plate (25) is horizontally arranged on the side edge of the lifting sliding seat (22).
5. A level gauge verification device according to claim 4, wherein: an inclined reinforcing rod (19) is fixedly arranged between the vertical square column (18) and the longitudinal mounting beam (16); a triangular rib plate (26) is arranged at the mounting position of the instrument placing plate (25) and the lifting sliding seat (22).
6. A level gauge verification device according to claim 5, wherein: the clamping driving assembly comprises a clamping driving bolt (29) and two clamping units which are oppositely arranged; the clamping unit comprises a lower thread driving seat (30), a clamping plate (33), a lifting cutting bar (35) with a T-shaped section and a lifting locking bolt (34); a strip-shaped guide hole (27) parallel to the longitudinal mounting beam (16) is formed in the instrument placing plate (25), and two sliding guide blocks are slidably mounted in the strip-shaped guide hole (27); the upper and lower side surfaces of the sliding guide block are respectively provided with a sliding upper supporting plate (32) and a sliding lower supporting plate (31); a central support (28) is arranged at the center of the lower side surface of the instrument placing plate (25); the middle part of the clamping driving bolt (29) is rotatably arranged on the central support (28), and the clamping driving bolt (29) is parallel to the strip-shaped guide hole (27); the thread directions of the clamping driving bolts (29) at the two sides of the central support (28) are opposite; the lower thread driving seats (30) of the two clamping units are respectively and fixedly arranged on the two sliding lower supporting plates (31); the two lower thread driving seats (30) are both screwed on the clamping driving bolt (29) through the clamping driving threaded hole, and the two lower thread driving seats (30) are respectively positioned on two sides of the central support (28); the clamping plates (33) of the two clamping units are respectively vertically arranged on the two sliding upper supporting plates (32), and T-shaped lifting chutes are vertically arranged on the opposite inner side surfaces of the two clamping plates (33); the lifting inserting bar (35) is inserted in the T-shaped lifting sliding groove of the corresponding clamping unit in a sliding manner; the lifting locking bolt (34) is screwed on the outer side surface of the clamping plate (33), and the end part of the lifting locking bolt (34) extends into the T-shaped lifting sliding groove and is pressed on the side surface of the lifting inserting strip (35).
7. A level gauge verification device according to claim 6, wherein: a strip-shaped hinge groove (36) is vertically arranged on the opposite inner side surfaces of the two lifting cuttings (35); an arc-shaped pressing plate (37) is hinged and mounted at the strip-shaped hinge grooves (36) at the two sides; the two arc-shaped pressing plates (37) extend obliquely towards the upper part of the center of the instrument placing plate (25); a pressing spring (38) is arranged between the arc-shaped pressing plate (37) and the lifting inserting bar (35) on the corresponding side; bottom rubber pads (40) are arranged on the upper side surface of the instrument placing plate (25) and positioned on two sides of the strip-shaped guide hole (27); side rubber pads (39) are arranged on the inner side surface of the clamping plate (33) and positioned on two sides of the T-shaped lifting chute; a top rubber pad (41) is arranged on the inner arc surface of the arc-shaped pressing plate (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921350159.0U CN210221215U (en) | 2019-08-20 | 2019-08-20 | Level instrument calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921350159.0U CN210221215U (en) | 2019-08-20 | 2019-08-20 | Level instrument calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210221215U true CN210221215U (en) | 2020-03-31 |
Family
ID=69919770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921350159.0U Expired - Fee Related CN210221215U (en) | 2019-08-20 | 2019-08-20 | Level instrument calibration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210221215U (en) |
-
2019
- 2019-08-20 CN CN201921350159.0U patent/CN210221215U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200331 Termination date: 20200820 |
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| CF01 | Termination of patent right due to non-payment of annual fee |