CN213932808U

CN213932808U - Be used for electronic balance accuracy measurement calibrating device

Info

Publication number: CN213932808U
Application number: CN202120064456.XU
Authority: CN
Inventors: 陈荣福
Original assignee: Guangdong 602 Measurement And Testing Co ltd
Current assignee: Guangdong 602 Measurement And Testing Co ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-08-10
Anticipated expiration: 2031-01-11

Abstract

The utility model belongs to the technical field of electronic balances, in particular to an accuracy measurement calibration device for an electronic balance, which comprises a base, wherein one side of the top of the base is fixedly connected with a left support column, the other side of the top of the base is fixedly connected with a right support column, the tops of the left support column and the right support column are jointly and fixedly connected with a platform plate, the top of the left support column is provided with a plate groove, the top of the platform plate is provided with a through hole, the plate groove of the left support column is communicated with the through hole of the platform plate, the utility model has simple structure and convenient operation, glass sand beads are not easy to corrode compared with weights, the defects and the limiting conditions of calibration through standard weights are solved, an electronic dynamometer is arranged at the same time, even if the glass sand beads are infected with dirt or moisture, errors can be avoided through the dynamometer, the utility model can calibrate the electronic balances with various measuring ranges, the application range is wide.

Description

Be used for electronic balance accuracy measurement calibrating device

Technical Field

The utility model relates to an electronic balance technical field especially relates to a be used for electronic balance accuracy measurement calibrating device.

Background

An electronic balance is used for weighing the mass of an object, is a relatively common experimental instrument in a chemical laboratory, and in verification, the error is relatively large when the balance is subjected to a first metering test, so that a part of instruments are not calibrated within a relatively long time interval, and people think that the balance can be directly weighed by displaying a zero position, and it needs to be pointed out that the electronic balance is started to display the zero point, which cannot indicate that the accuracy of data weighed by the balance meets a test standard, but only can indicate that the stability of the zero position of the balance is qualified, because whether one balance is qualified or not is measured, the conformity of other technical indexes needs to be comprehensively considered, because the storage time is long, the position is moved, the environment is changed or accurate measurement is obtained, the balance is generally subjected to calibration operation before use, and a calibration method is divided into an inner calibration method and an outer calibration method, but relatively speaking, the cost of the outer calibration is lower, the accuracy is higher.

The normal external calibration is on electronic balance through placing standard weight, makes electronic balance carry out the calibration, but balance standard weight has very high environment and operating requirement, and the weight just can not be used to the condition of corroding or other influence precision slightly, and numerical value is fixed moreover, can not adapt to the electronic balance of various ranges, consequently designs one kind and is used for electronic balance accuracy measurement calibrating device.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art, and provides an accuracy measurement and calibration device for an electronic balance.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an accuracy metering and calibrating device for an electronic balance comprises a base, wherein one side of the top of the base is fixedly connected with a left support column, the other side of the top of the base is fixedly connected with a right support column, the tops of the left support column and the right support column are fixedly connected with a platform plate together, the top of the left support column is provided with a plate groove, the top of the platform plate is provided with a through hole, the plate groove of the left support column is communicated with the through hole of the platform plate, the plate groove of the left support column and the through hole of the platform plate are connected with a sliding plate together in a sliding manner, one side of the sliding plate is fixedly connected with a rack, a transmission component is arranged in the platform plate and controls the sliding plate to ascend and descend, the top of one side of the sliding plate is fixedly connected with a cross rod, the bottom of the cross rod is fixedly connected with an electronic dynamometer, and the center of the platform plate is connected with a round rod in a penetrating and sliding manner, the top fixedly connected with rings of round bar, rings link to each other with the couple of electron dynamometer, the bottom fixedly connected with ball bucket of round bar, top one side fixedly connected with ball box of landing slab, a plurality of glass sand pearls of different sizes have been placed to the inside of ball box.

Preferably, transmission assembly includes the gear, gear and rack toothing, the center of gear runs through and the first rotation pole of fixedly connected with, first rotation pole rotates the inside of connecting at the landing slab, the outer wall cover of first rotation pole is equipped with the ratchet, the ratchet is located one side of gear, the sawtooth block of ratchet has the card strip, the one end fixedly connected with ring of ratchet is kept away from to the card strip, the ring runs through and fixedly connected with second rotation pole, second rotation pole rotates the inside of connecting at the landing slab, one side fixedly connected with spring of card strip, the one end fixed connection that the card strip was kept away from to the spring is on the dead lever, dead lever fixed connection is in the inside of landing slab.

Preferably, the bearings are sleeved at two ends of the first rotating rod and fixedly connected with the first rotating rod, and the outer rings of the bearings are fixedly connected inside the platform plate.

Preferably, the one end of second dwang runs through the outside and the fixedly connected with knob of landing slab, the knob rotates to be connected on one side outer wall of landing slab.

Preferably, the outer wall cover of round bar establishes and sliding connection has linear bearing, linear bearing's outer wall fixed connection is in the center of landing slab.

Preferably, the top of the ball barrel is designed to be an opening, and the inner side of the bottom of the ball barrel is fixedly connected with the bottom of the round rod.

Preferably, the total mass of the round rod, the ball barrel and the hanging ring is a fixed value of 50g, and the mass of the glass sand beads is in specifications of 0.01g, 0.1g, 1g, 10g and 100 g.

Compared with the prior art, the beneficial effects of the utility model are that:

1. after the utility model is placed stably, the electronic balance is horizontally placed above the base and below the ball barrel, a calibration key of the electronic balance is pressed, proper glass sand beads are added into the ball barrel according to the numerical value displayed by the electronic balance, in the process of increasing the mass of the ball barrel, gravity causes the round rod and the hanging ring to generate pulling force on the electronic dynamometer along with the increase, when the numerical value displayed by the electronic dynamometer is the same as the numerical value displayed by the electronic balance, the knob rotates clockwise, drives the second rotating rod to rotate, causes the ring to rotate, causes the clamping strip to rotate clockwise, the ratchet of the ratchet wheel is separated from the control of the clamping strip, the sliding plate slowly slides downwards under the action of gravity, the sliding plate drives the rack to rotate anticlockwise in the process of sliding downwards, simultaneously causes the first rotating rod and the ratchet wheel to rotate anticlockwise, when the numerical value on the electronic dynamometer is 0, the knob is loosened, the spring pulls the clamping strip to reset to clamp the ratchet wheel, the gear can not rotate, the sliding plate stops sliding downwards, and the weighed mass of the electronic balance is the mass to be calibrated;

2. if the mass to be calibrated of the electronic balance is less than 50g of the total mass of the ball barrel, the round rod and the hanging ring, when the numerical value displayed by the electronic dynamometer is 50 minus the numerical value displayed by the electronic balance, the knob is loosened to fix the sliding plate, and the weighed mass of the electronic balance is the mass to be calibrated;

3. after the use, unable adjustment base pulls up the sliding plate, and the rack shifts up and makes the gear rotate clockwise, and the card strip can not lead to the fact the blockking to the ratchet, and the second dwang is with the ratchet block behind the unclamping sliding plate, makes the sliding plate fixed.

The utility model discloses simple structure, convenient operation, glass sand pearl are compared the weight and are not perishable, have solved and have carried out weak point and the restrictive condition of calibration through standard weight, set up the electronic dynamometer simultaneously, even glass sand pearl is infected with dirt or moisture also can know through the dynamometer and avoid the error, the utility model discloses can calibrate the electronic balance of various ranges, application range is wide.

Drawings

Fig. 1 is a schematic structural diagram of an electronic balance precision measurement calibration device according to the present invention in a front view;

fig. 2 is a schematic sectional view of an electronic balance precision measurement calibration device according to the present invention;

fig. 3 is a schematic top view of an apparatus for calibrating the accuracy measurement of an electronic balance according to the present invention;

fig. 4 is a schematic diagram of a partial top-view cross-sectional structure of a platform plate for an electronic balance precision measurement calibration apparatus according to the present invention;

fig. 5 is an enlarged schematic structural diagram of a portion a of an electronic balance precision measurement calibration apparatus according to the present invention.

In the figure: 1. a base; 2. a left support column; 3. a right support column; 4. a platform plate; 5. a knob; 6. a ball barrel; 7. a ball box; 8. a round bar; 9. a hoisting ring; 10. a sliding plate; 11. a cross bar; 12. an electronic dynamometer; 13. glass sand beads; 14. a rack; 15. a linear bearing; 16. a gear; 17. a ratchet wheel; 18. a first rotating lever; 19. clamping the strip; 20. a second rotating lever; 21. a circular ring; 22. fixing the rod; 23. a spring; 24. and a bearing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example one

As shown in fig. 1-5, the device for calibrating the accuracy measurement of an electronic balance of the present embodiment includes a base 1, a left support column 2 is fixedly connected to one side of the top of the base 1, a right support column 3 is fixedly connected to the other side of the top of the base 1, a platform plate 4 is fixedly connected to the tops of the left support column 2 and the right support column 3, a plate groove is formed at the top of the left support column 2, a through hole is formed at the top of the platform plate 4, the plate groove of the left support column 2 is communicated with the through hole of the platform plate 4, a sliding plate 10 is slidably connected to the plate groove of the left support column 2 and the through hole of the platform plate 4, a rack 14 is fixedly connected to one side of the sliding plate 10, a transmission assembly is disposed in the platform plate 4, the transmission assembly controls the sliding plate 10 to ascend and descend, a cross bar 11 is fixedly connected to the top of one side of the sliding plate 10, and an electronic dynamometer 12 is fixedly connected to the bottom of the cross bar 11, the center of landing slab 4 runs through and sliding connection has round bar 8, and the top fixedly connected with rings 9 of round bar 8, rings 9 link to each other with electron dynamometer 12's couple, and the bottom fixedly connected with ball bucket 6 of round bar 8, top one side fixedly connected with ball box 7 of landing slab 4, and a plurality of glass sand pearl 13 that differ in size have been placed to the inside of ball box 7.

In this embodiment, transmission assembly includes gear 16, gear 16 and the meshing of rack 14, gear 16's center is run through and the first dwang 18 of fixedly connected with, first dwang 18 rotates the inside of connecting at landing slab 4, the outer wall cover of first dwang 18 is equipped with ratchet 17, ratchet 17 is located one side of gear 16, ratchet 17's sawtooth block has card strip 19, card strip 19 keeps away from the one end fixedly connected with ring 21 of ratchet 17, ring 21 runs through and fixedly connected with second dwang 20, second dwang 20 rotates the inside of connecting at landing slab 4, one side fixedly connected with spring 23 of card strip 19, spring 23 keeps away from the one end fixed connection of card strip 19 on dead lever 22, dead lever 22 fixed connection is in landing slab 4's inside.

In this embodiment, the bearings 24 are sleeved and fixedly connected to both ends of the first rotating rod 18, and the outer ring of the bearing 24 is fixedly connected to the inside of the platform plate 4.

In this embodiment, one end of the second rotating rod 20 penetrates through the outer side of the platform plate 4 and is fixedly connected with a knob 5, and the knob 5 is rotatably connected to the outer wall of one side of the platform plate 4.

In this embodiment, the outer wall of round bar 8 is sleeved and slidably connected with linear bearing 15, and the outer wall of linear bearing 15 is fixedly connected at the center of platform plate 4.

In this embodiment, the top of the ball bucket 6 is an open design, and the inner side of the bottom of the ball bucket 6 is fixedly connected with the bottom of the round rod 8.

In the embodiment, the total mass of the round rod 8, the ball barrel 6 and the hanging ring 9 is a fixed value of 50g, and the mass of the glass sand beads 13 has several specifications of 0.01g, 0.1g, 1g, 10g and 100 g.

The working principle is as follows: after the utility model is placed stably, the electronic balance is horizontally placed above the base 1 and below the ball barrel 6, a calibration key of the electronic balance is pressed, proper glass sand beads 13 are added into the ball barrel 6 according to the numerical value displayed by the electronic balance, in the process of increasing the mass of the ball barrel 6, gravity causes the round rod 8 and the hanging ring 9 to generate pulling force on the electronic dynamometer 12 along with the increase, when the numerical value displayed by the electronic dynamometer 12 is the same as the numerical value displayed by the electronic balance, the knob 5 is rotated clockwise, the knob 5 drives the second rotating rod 20 to rotate, the ring 21 rotates, the ratchet teeth 19 rotate clockwise, the ratchet teeth of the ratchet wheel 17 are separated from the control of the ratchet teeth 19, the sliding plate 10 slowly slides downwards under the action of gravity, the sliding plate 10 drives the rack 14 to slide downwards, the gear 16 rotates anticlockwise, the first rotating rod 18 and the ratchet wheel 17 rotate simultaneously, when the numerical value on the electronic dynamometer 12 is 0, the knob 5 is loosened, the spring 23 pulls the clamping strip 19 to return to the original position to clamp the ratchet wheel 17, the gear 16 cannot rotate, the sliding plate 10 stops sliding downwards, the weighed mass of the electronic balance is the mass to be calibrated, if the mass to be calibrated of the electronic balance is smaller than the total mass 50g of the ball barrel 6, the round rod 8 and the hanging ring 9, when the numerical value displayed by the electronic dynamometer 12 is 50-the numerical value displayed by the electronic balance, the knob 5 is loosened to fix the sliding plate 10, the weighed mass of the electronic balance is the mass to be calibrated, after the electronic balance is used, the fixed base 1 pulls up the sliding plate 10, the rack 14 moves up to enable the gear 16 to rotate clockwise, the clamping strip 19 cannot block the ratchet wheel 17, and after the sliding plate 10 is loosened, the second rotating rod 20 clamps the ratchet wheel 17 to fix the sliding plate 10.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The device for measuring and calibrating the accuracy of the electronic balance comprises a base (1) and is characterized in that one side of the top of the base (1) is fixedly connected with a left support column (2), the other side of the top of the base (1) is fixedly connected with a right support column (3), the tops of the left support column (2) and the right support column (3) are fixedly connected with a platform plate (4) together, the top of the left support column (2) is provided with a plate groove, the top of the platform plate (4) is provided with a through hole, the plate groove of the left support column (2) is communicated with the through hole of the platform plate (4), the plate groove of the left support column (2) is slidably connected with a sliding plate (10) together in the through hole of the platform plate (4), one side of the sliding plate (10) is fixedly connected with a rack (14), and a transmission assembly is arranged in the platform plate (4), the transmission assembly controls the sliding plate (10) rises and descends, one side top fixedly connected with horizontal pole (11) of sliding plate (10), the bottom fixedly connected with electron dynamometer (12) of horizontal pole (11), the center of landing slab (4) runs through and sliding connection has round bar (8), top fixedly connected with rings (9) of round bar (8), rings (9) link to each other with the couple of electron dynamometer (12), the bottom fixedly connected with ball bucket (6) of round bar (8), top one side fixedly connected with ball box (7) of landing slab (4), a plurality of glass sand pearl (13) that differ in size have been placed to the inside of ball box (7).

2. The device for measuring and calibrating the accuracy of the electronic balance according to claim 1, wherein the transmission assembly comprises a gear (16), the gear (16) is meshed with a rack (14), the center of the gear (16) penetrates through and is fixedly connected with a first rotating rod (18), the first rotating rod (18) is rotatably connected in the platform plate (4), the outer wall of the first rotating rod (18) is sleeved with a ratchet wheel (17), the ratchet wheel (17) is positioned on one side of the gear (16), a clamping strip (19) is clamped on the sawtooth of the ratchet wheel (17), a circular ring (21) is fixedly connected with one end of the clamping strip (19) far away from the ratchet wheel (17), the circular ring (21) penetrates through and is fixedly connected with a second rotating rod (20), the second rotating rod (20) is rotatably connected in the platform plate (4), a spring (23) is fixedly connected with one side of the clamping strip (19), one end of the spring (23) far away from the clamping strip (19) is fixedly connected onto the fixing rod (22), and the fixing rod (22) is fixedly connected inside the platform plate (4).

3. The device for calibrating the accuracy measurement of the electronic balance according to claim 2, wherein the first rotating rod (18) is sleeved and fixedly connected with bearings (24) at both ends, and the outer ring of each bearing (24) is fixedly connected inside the platform plate (4).

4. The electronic balance precision measurement calibration device according to claim 2, wherein one end of the second rotating rod (20) penetrates through the outer side of the platform plate (4) and is fixedly connected with a knob (5), and the knob (5) is rotatably connected to the outer wall of one side of the platform plate (4).

5. The electronic balance precision metering calibration device is characterized in that a linear bearing (15) is sleeved and connected with the outer wall of the round rod (8) in a sliding mode, and the outer wall of the linear bearing (15) is fixedly connected to the center of the platform plate (4).

6. The device for calibrating the accuracy measurement of the electronic balance according to claim 1, wherein the top of the ball barrel (6) is of an open design, and the inner side of the bottom of the ball barrel (6) is fixedly connected with the bottom of the round rod (8).

7. The device for calibrating the accuracy measurement of the electronic balance according to claim 1, wherein the total mass of the round rod (8), the ball barrel (6) and the hanging ring (9) is a fixed value of 50 g.