CN214471262U - Suspension type cell sap weighing device with deformation amplification function - Google Patents
Suspension type cell sap weighing device with deformation amplification function Download PDFInfo
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- CN214471262U CN214471262U CN202022478318.4U CN202022478318U CN214471262U CN 214471262 U CN214471262 U CN 214471262U CN 202022478318 U CN202022478318 U CN 202022478318U CN 214471262 U CN214471262 U CN 214471262U
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Abstract
The utility model provides a take suspension type cell sap weighing device that deformation was enlargied, including fixed shielding structure, weighing sensor, structure and flexible suspended structure are enlargied in deformation, weighing sensor is equipped with stiff end and measuring terminal, the structure is enlargied by the connecting seat in deformation, elastomer and spacing axle are constituteed, the connecting seat is connected with the measuring terminal, spacing axle is the step axle, spacing axle is equipped with little axle head and big axle head, fixed shielding structure is by hanging the seat, protection cover plate and keysets are constituteed, be equipped with a through-hole in the middle of the protection cover plate, the diameter of little axle head is less than the diameter of through-hole, little axle head accessible through-hole, the diameter of big axle head is greater than the diameter of through-hole, little axle head and big axle serve all to process a word groove. The device can protect the overload in any direction through the stroke amplifying structure, simultaneously reduces the processing, assembling and debugging precision, effectively reduces the cost, and reduces the vibration when the whole device is impacted.
Description
Technical Field
The utility model belongs to the technical field of biological cell processing weighing-appliance, in particular to take suspension type cell sap weighing device that deformation was enlargied.
Background
In the biological cell processing process, it is often necessary to use a high-precision weighing device to weigh a biological fluid, such as a cell sample bag or a final product bag to be concentrated; and the weighing sensor is a key component of the weighing device. The weighing sensor is very sensitive to external factors, and during the use process, measurement errors and even damage to the sensor are likely to be caused by electromagnetic interference, strong vibration, impact and overload. Therefore, the weighing device should be structurally protected from the load cell.
A weighing sensor commonly used in the industry is a cantilever beam weighing sensor which is divided into a fixed end and a measuring end; when its measuring end is subjected to its rated load (range) N, its maximum deformation is l. When this amount of deformation is exceeded, the load cell is easily damaged. And the weighing sensor has high precision and small deformation in the working load range. Taking a currently commonly used weighing sensor with a measuring range of 1.5kg as an example, the full-load deformation amount of the weighing sensor is only 0.2mm-0.3mm, which inevitably increases the processing, inspection and assembly costs of the protection structure of the weighing device.
In the weighing device in the biological cell processing equipment on the market at present, the protection structure of a weighing sensor is complex, so that the design, processing, inspection and assembly costs are high; or the weighing sensor is not protected in place or even not protected, so that weighing inaccuracy and even damage to the weighing sensor are caused when the weighing sensor is in an accident situation.
Therefore, a suspension type cell sap weighing device with deformation amplification is needed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a take suspension type cell sap weighing device that deformation is enlargied has solved the unreasonable problem of weighing sensor protection architecture design among the prior art.
The technical scheme of the utility model is realized like this: a suspension type cell sap weighing device with deformation amplification comprises a fixed shielding structure, a weighing sensor, a deformation amplification structure and a flexible suspension structure, the weighing sensor is provided with a fixed end and a measuring end, the deformation amplifying structure consists of a connecting seat, an elastic body and a limiting shaft, the connecting seat is connected with the measuring end, the limiting shaft is a step shaft, the limiting shaft is provided with a small shaft end and a big shaft end, the fixed shielding structure consists of a suspension seat, a protective cover plate and an adapter plate, a through hole is arranged in the middle of the protective cover plate, the diameter of the small shaft end is smaller than that of the through hole, the small shaft end can pass through the through hole, the diameter of the large shaft end is larger than that of the through hole, the small shaft end and the large shaft end are both provided with a straight groove, one end of the elastic body is fixedly connected with the connecting seat, and the other end of the elastic body is fixedly connected with the straight groove at the end of the big shaft.
As a preferred embodiment, the flexible suspension structure comprises an extension spring, a hook seat and a hook, a seat hole is formed in the lower end of the hook seat, the hook is fixed in the seat hole in a threaded connection mode, a straight groove is formed in the upper end of the hook seat, a first screw is connected with one end of the extension spring, and a second screw penetrates through the other end of the extension spring and is fixed in the straight groove at the end of the small shaft.
As a preferred embodiment, one end of the elastic body is fixed on the hole of the connecting seat through a third screw, and the other end of the elastic body is fixed in the linear groove at the large shaft end through a fourth screw.
In a preferred embodiment, the elastic body is a spring with a constant elastic coefficient.
As a preferred embodiment, the suspension base is a metal shell with closed periphery, four corners of the suspension base are provided with threaded holes, four corners of the protection cover plate are also provided with fixing holes corresponding to the threaded holes of the four corners of the suspension base, and the suspension base and the protection cover plate form a metal shielding case.
As a preferred embodiment, the adapter plate is in a zigzag shape, one end of the adapter plate is connected with the suspension base, and the other end of the adapter plate is connected with the fixed end.
After the technical scheme is adopted, the beneficial effects of the utility model are that: the overload in any direction can be protected by the stroke amplifying structure in cooperation with the protective cover plate and the fixing screw, and meanwhile, the processing, assembling and debugging precision is reduced, and the cost is effectively reduced;
the influence of the electromagnetic interference symmetrical retransmission sensor is shielded through the closed structure of the metal suspension seat, and the precision of the electromagnetic interference symmetrical retransmission sensor is ensured;
the flexible suspension structure below can almost counteract the impact and the impact in any direction, and reduce the vibration when the whole device is impacted and impacted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic diagram of an explosive structure of a suspension type cellular fluid weighing device with deformation amplification according to the present invention;
fig. 2 is a schematic view of the installation structure of the suspension type cellular fluid weighing device with deformation amplification of the present invention.
In the figure, 11-suspension seat; 12-a protective cover plate; 121-a through hole; 13-an adapter plate; 21-a fixed end; 22-a measuring end; 31-a connecting seat; 32-an elastomer; 33-a limiting shaft; 331-minor axis end; 332-big shaft end; 34-a third screw; 35-a fourth screw; 41-extension spring; 42-hook seat; 422-straight slot; 43-hook; 44-a second screw; 45-first screw.
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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example (b):
as shown in FIGS. 1 and 2, a suspension type cell sap weighing device with deformation amplification comprises a fixed shielding structure, a weighing sensor, a deformation amplification structure and a flexible suspension structure, wherein the weighing sensor is provided with a fixed end 21 and a measuring end 22, the deformation amplification structure comprises a connecting seat 31, an elastic body 32 and a limiting shaft 33, the connecting seat 31 is connected with the measuring end 22, the limiting shaft 33 is a stepped shaft, the limiting shaft 33 is provided with a small shaft end 331 and a large shaft end 332, the fixed shielding structure comprises a suspension seat 11, a protective cover plate 12 and an adapter plate 13, the middle of the protective cover plate 12 is provided with a through hole 121, the diameter of the small shaft end 331 is smaller than that of the through hole 121, the small shaft end 331 can pass through the through hole 121, the diameter of the large shaft end 332 is larger than that of the through hole 121, the small shaft end 331 and the large shaft end 332 are both provided with a straight groove, one end of the elastic body 32 is fixedly connected with the connecting seat 31, the other end of the elastic body 32 is fixedly connected with the straight groove of the large shaft end 332, the flexible suspension structure consists of an extension spring 41, a hook seat 42 and a hook 43, wherein the lower end of the hook seat 42 is provided with a seat hole, the hook 43 is fixed in the seat hole in a threaded connection mode, the upper end of the hook seat 42 is processed with a straight groove 422, a first screw 45 is connected with one end of the extension spring 41, a second screw 44 penetrates through the other end of the extension spring 41 and is fixed in the straight groove of a small shaft end 331, one end of an elastic body 32 is fixed on the hole of a connecting seat 31 through a third screw 34, the other end of the elastic body 32 is fixed in the straight groove of a large shaft end 332 through a fourth screw 35, the elastic body 32 is a spring with constant elastic coefficient, the suspension seat 11 is a metal shell with closed periphery, four corners of the suspension seat 11 are provided with threaded holes, the positions of four corners of a protective cover plate 12 are also provided with fixing holes corresponding to the threaded holes of the four corners of the suspension seat 11, the suspension seat 11 and the protective cover plate 12 form a metal shielding cover, the adapter plate 13 is Z-shaped, one end of the adapter plate 13 is connected with the suspension seat 11, and the other end of the adapter plate 13 is connected with the fixed end 21.
When no load is applied, the distance between the large end surface of the limiting shaft and the protective plate is L, and the deformation of the weighing sensor is L0≈0；
When a certain load (gravity direction) N is applied on the hook1(N1N, where N is the rated load), the degree of deformation of the elastomer at that time is N1The distance between the large end face of the limiting shaft and the protective cover plate is more than 0 and less than L1＝L-N1K, sensor deflection l1＜l；
When the load on the hook (direction of gravity) N2N is K L, the big end face of the limiting shaft contacts with the protective cover plate, N2/K＝L，L1When the load on the load cell is N, 02N, degree of deformation l1＝l。
When subjected to an undesired load N2When the gravity direction is larger than N, the large end face on the limiting shaft is contacted with the protective cover plate, L10; the load applied to the sensor is still K x L N, at which point the degree of deformation L of the sensor is1＝l。
When subjected to an undesired load N4(the gravity direction is opposite), the elastic body still can upwards be out of shape, and the set screw of spacing axle lower extreme can contact with the protection apron, can prevent overload equally, protects the sensor.
When the hook is impacted, the impact force can be effectively reduced due to the flexibility of the extension spring, and the impact and the vibration of the whole device are reduced.
Through the structure, the deformation of the weighing sensor is indirectly amplified, the weighing sensor is effectively protected and cannot be damaged under the conditions of overload and accidental impact, and the processing precision, the installation precision, the debugging precision, the processing cost and the assembling cost of parts are reduced.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A suspension type cell sap weighing device that area deformation was enlargied which characterized in that includes: the device comprises a fixed shielding structure, a weighing sensor, a deformation amplification structure and a flexible suspension structure, wherein the weighing sensor is provided with a fixed end and a measuring end, the deformation amplifying structure consists of a connecting seat, an elastic body and a limiting shaft, the connecting seat is connected with the measuring end, the limiting shaft is a step shaft, the limiting shaft is provided with a small shaft end and a large shaft end, the fixed shielding structure consists of a suspension seat, a protective cover plate and an adapter plate, a through hole is arranged in the middle of the protective cover plate, the diameter of the small shaft end is smaller than that of the through hole, the small shaft end can pass through the through hole, the diameter of the large shaft end is larger than that of the through hole, the small shaft end and the large shaft end are both provided with a straight groove, one end of the elastic body is fixedly connected with the connecting seat, and the other end of the elastic body is fixedly connected with the straight groove of the large shaft end.
2. The shape-changing-amplified suspended-type cellular fluid weighing apparatus according to claim 1, wherein: the flexible suspension structure is composed of an extension spring, a hook seat and a hook, a seat hole is formed in the lower end of the hook seat, the hook is fixed in the seat hole in a threaded connection mode, a straight groove is formed in the upper end of the hook seat, a first screw is connected with one end of the extension spring, and a second screw penetrates through the other end of the extension spring and is fixed in the straight groove at the end of a small shaft.
3. The shape-changing-amplified suspended-type cellular fluid weighing apparatus according to claim 1, wherein: one end of the elastic body is fixed on the hole of the connecting seat through a third screw, and the other end of the elastic body is fixed in the straight groove at the end of the big shaft through a fourth screw.
4. The shape-changing-amplified suspended cell liquid weighing apparatus according to claim 3, wherein: the elastic body is a spring with constant elastic coefficient.
5. The shape-changing-amplified suspended-type cellular fluid weighing apparatus according to claim 1, wherein: the suspension seat is a metal shell with the periphery closed, threaded holes are formed in four corners of the suspension seat, fixing holes corresponding to the threaded holes in the four corners of the suspension seat are formed in the four corners of the protection cover plate, and the suspension seat and the protection cover plate form a metal shielding cover.
6. The shape-changing-amplified suspended-type cellular fluid weighing apparatus according to claim 1, wherein: the adapter plate is Z-shaped, one end of the adapter plate is connected with the suspension seat, and the other end of the adapter plate is connected with the fixed end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022478318.4U CN214471262U (en) | 2020-10-30 | 2020-10-30 | Suspension type cell sap weighing device with deformation amplification function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022478318.4U CN214471262U (en) | 2020-10-30 | 2020-10-30 | Suspension type cell sap weighing device with deformation amplification function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214471262U true CN214471262U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022478318.4U Active CN214471262U (en) | 2020-10-30 | 2020-10-30 | Suspension type cell sap weighing device with deformation amplification function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214471262U (en) |
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2020
- 2020-10-30 CN CN202022478318.4U patent/CN214471262U/en active Active
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Address after: Room 201, Building 13, No. 6055, Jinhai Road, Fengxian District, Shanghai, 201403 Patentee after: Zhongbo Ruikang (Shanghai) Biotechnology Co.,Ltd. Address before: 100176 room 301-33, floor 3, building 15, zone 2, yard 31, Kechuang 13th Street, Beijing Economic and Technological Development Zone, Daxing District, Beijing (Yizhuang group, high-end industrial area of Beijing Pilot Free Trade Zone) Patentee before: Zhongbo Ruikang (Beijing) Biomedical Technology Co.,Ltd. |