CN207556885U - A kind of sampling mechanism for preventing sampling probe from sliding - Google Patents
A kind of sampling mechanism for preventing sampling probe from sliding Download PDFInfo
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- CN207556885U CN207556885U CN201721429008.5U CN201721429008U CN207556885U CN 207556885 U CN207556885 U CN 207556885U CN 201721429008 U CN201721429008 U CN 201721429008U CN 207556885 U CN207556885 U CN 207556885U
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- rack
- mandril
- sampling
- sampling probe
- bottom plate
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Abstract
The utility model is related to a kind of sampling mechanisms for preventing sampling probe from sliding, including mounting base, the sampling probe for the motor being arranged in mounting base, being arranged on the rack being arranged in a vertical direction in mounting base, being arranged on rack bottom end, the gear coordinated with rack is provided on the output shaft of the motor, the motor-driven gear can drive the rack to move up and down when rotating；Be additionally provided with damping unit in the mounting base, the damping unit includes bottom plate, cover board of the lid on bottom plate, the mandril being arranged between cover board and bottom plate, to the mandril applied force so that mandril be resisted against rack without the spring on serrated face.In use, spring generates mandril power of the top to rack, when instrument is powered, gear band carry-over bar moves up and down, when instrument powers off, the gravity of rack is overcome by the engagement force between the frictional force and rack and motor gear that are generated between rack and mandril, makes rack and sampling probe that can not slide.
Description
Technical field
The utility model is related to a kind of sampling mechanisms for preventing sampling probe from sliding, and belong to technical field of analytical instruments.
Background technology
It in analytical instrument, needs to be sampled sample and reagent by sampling probe, specifically driving device driving peace
Mechanical arm equipped with sampling probe sampling probe to move down to sample until entering reagent bottle, and after sampling sampling probe to moving up
Dynamic to leave reagent bottle, sampling assemble resets, and is at this time workbench below sampling probe.When instrument powers off, the sampling group after reset
The gravity of part is more than the torsion of motor rotation, and sampling assemble slowly can downwards slide under its own gravity, and sampling probe is caused to be pricked
On table top, sampling probe is damaged, influences the progress of test.
Therefore, it is necessary to increase the device that can prevent sampling assemble from sliding downwards under the effect of gravity under a power blackout situation,
The damage of sampling probe is effectively prevented, ensures the service life of sampling probe and being smoothed out for detection.
Utility model content
The technical problems to be solved in the utility model is：The technology slid downwards when power is off to solve sampling assemble is asked
Topic provides a kind of sampling mechanism for preventing sampling probe from sliding.
Technical solution is used by the utility model solves its technical problem：
A kind of sampling mechanism for preventing sampling probe from sliding, including mounting base, the motor being arranged in mounting base, is arranged on peace
The rack that is arranged in a vertical direction on dress seat is arranged on the sampling probe of rack bottom end, be provided on the output shaft of the motor with
The gear of rack cooperation, the motor-driven gear can drive the rack to move up and down when rotating；In the mounting base also
Damping unit is provided with, the damping unit includes bottom plate, and cover board of the lid on bottom plate is arranged between cover board and bottom plate
Mandril, to the mandril applied force so that mandril be resisted against rack without the spring on serrated face.
Preferably, the spring one end is hooked on the first spring catch of installation on the cover board, and the other end is hooked on installation
On the second spring pin of mandril one end.
Preferably, it is opened up on four angles of the cover board there are four long lumbar hole, the cover board is by stretching into the spiral shell of long lumbar hole
Nail coordinates with bottom plate.
Preferably, the mandril is close to jacking block of the one end of rack for strip.
Preferably, the rack is semi-cylindrical without serrated face, and the end face that the jacking block is contacted with rack is indent
Semi-cylindrical.
Preferably, opened up on the bottom plate it is fluted, described groove one end to bottom panel side be open, the mandril is slidably
Ground is installed in the groove of bottom plate.
Preferably, the mandril is T-shaped.
Preferably, the friction coefficient of the material of the jacking block is 0.1-0.3.
Preferably, the material of the jacking block is acetal resin.
Preferably, the material of the rack is 316L stainless steels.
The beneficial effects of the utility model are：The sampling mechanism for preventing sampling probe from sliding of the utility model is provided with damping
Device, the damping unit include bottom plate, cover board of the lid on bottom plate, the mandril being arranged between cover board and bottom plate, to institute
State mandril applied force so that mandril be resisted against rack without the spring on serrated face, on the one hand when instrument is powered, motor driving
Gear rotates, and gear drives the racks turn for being equipped with sampling probe so that sampling probe is moved downward to reagent bottle sampling, and is taking
Sampling probe is made to move upwardly off reagent bottle after sample, rack and sampling probe reset；On the other hand, when instrument powers off, pass through tooth
Engagement force between the frictional force and rack and motor gear that are generated between item and mandril overcomes the gravity of rack, makes rack and takes
Sample needle can not slide.The structure of sampling mechanism for preventing sampling probe from sliding of the utility model is simple, at low cost, but can be effective
The damage of sampling probe is prevented, ensure that the service life of sampling probe and being smoothed out for detection.
Description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the structure diagram of the utility model embodiment sampling mechanism；
Fig. 2 is the structure diagram of the utility model embodiment damping unit；
Fig. 3 is the half sectional view of the utility model embodiment damping unit；
Fig. 4 is the stereogram of the utility model embodiment sampling mechanism.
Reference numeral in figure is：1- damping units, 11- pedestals, 12- cover boards, 13- top plates, 132- jacking blocks, 14- springs,
The first spring catch of 15-, 16- second spring pins, 2- racks, 3- gears, 4- mounting bases.
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows the composition related with the utility model.
Embodiment
The present embodiment provides a kind of sampling mechanism for preventing sampling probe from sliding, as shown in Figure 1, Figure 2 and Figure 3, including installation
Seat 4, is arranged on the rack 2 being arranged in a vertical direction in mounting base 4, is arranged on 2 bottom of rack the motor 3 being arranged in mounting base 4
The sampling probe at end, is provided with the gear coordinated with rack 2 on the output shaft of the motor, during 3 drive gear of the motor rotation
The rack 2 can be driven to move up and down；Damping unit 1 is additionally provided in the mounting base 4, the damping unit 1 includes bottom
Plate 11, cover board of the lid on bottom plate 11, the mandril 13 being arranged between cover board 12 and bottom plate 11, to 13 applied force of mandril
So that mandril 13 be resisted against rack 2 without the spring 14 on serrated face.
In use, generating power of the top to rack 2 to mandril 13 by spring 14, mandril 132 is made to withstand rack 2.In instrument
During energization, motor-driven gear 3 rotates, and gear 3 drives the rack 2 for being equipped with sampling probe to rotate so that sampling probe moves down
It is sampled to reagent bottle, and the rotation of gear 3 overcomes the frictional force of rack 2 and mandril 132 generation and rack 2 itself after sampling
Gravity, makes sampling probe move upwardly off reagent bottle, and rack 2 and sampling probe reset；When instrument powers off, 2 oriented downslide of rack
The sum of the trend fallen, the engagement force between the frictional force generated between this hour rack 2 and mandril 132 and rack and motor gear is big
In the gravity of rack 2, rack 2 will be unable to slide, and sampling probe also can not just slide.
Preferably, as shown in figure 3,14 one end of the spring is hooked on the first spring catch 15 on cover board 12,
The other end is hooked on the second spring pin 16 of 13 one end of mandril, and spring 14 is in tensional state at this time, makes mandril 13
Pressure is generated to rack 2.
Preferably, as shown in Figure 1, Figure 2, Figure 3 and Figure 4, long lumbar hole there are four being opened up on four angles of the cover board 12
121, the cover board 12 is coordinated by stretching into the screw of long lumbar hole 121 with bottom plate 11.In use, the spiral shell that long lumbar hole 121 will be stretched into
Nail is fixed on i.e. adjustable 12 position of cover board of different location of long lumbar hole 121, this designs the stretching for being capable of flexible modulation spring 14
Amount, and then adjusting mandril 132 pushes up the pressure to rack 2, on the one hand avoids the frictional force between rack 2 and mandril 132 too small, in instrument
Rack 2 slides with sampling probe after device power-off, on the other hand avoids the frictional force between rack 2 and mandril 132 too big, leads to rack
2 with 132 serious wear of mandril, can not smoothly move up and down with carry-over bar 3 when even resulting in electrical power.
Preferably, as shown in Figure 1, Figure 2, Figure 3 and Figure 4, the mandril 13 is close to jacking block of the one end of rack 2 for strip
132。
Preferably, as shown in Figure 2, Figure 3 and Figure 4, the rack 2 without serrated face be semi-cylindrical, the jacking block 132 with
The end face that rack 2 contacts is the semi-cylindrical of indent, this design can increase the contact area between rack 2 and mandril 132, increase
Frictional force, because frictional force deficiency causes rack to glide with sampling probe when avoiding powering off.
Preferably, as shown in Figure 2, Figure 3 and Figure 4, open up fluted on the bottom plate 11, described groove one end is to bottom plate 11
Lateral opening, the mandril 13 are slidably mounted in the groove of bottom plate 11.This design can make mandril 13 along a groove left side
Right slip limits the movement locus of mandril.
Preferably, as shown in Figure 1, Figure 2, Figure 3 and Figure 4, the mandril 13 is T-shaped.
Preferably, the friction coefficient of the material of the mandril 132 is 0.1-0.3 (such as 0.1,0.15,0.2,0.25,0.3),
The friction system can make frictional force moderate, while the friction loss for reducing the generation that rubs between rack 2 and mandril 132, protect
Sampling probe does not glide when demonstrate,proving abnormality.
Further, the material of the mandril 132 is acetal resin, and the material friction coefficient is small, abrasion performance, surface light
Sliding, self lubricity is good, can effectively reduce the friction loss for the generation that rubs between rack 2 and mandril 132.
Preferably, the material of the rack 2 is 316L stainless steels, and the processing of 2 surface of rack is smooth, can effectively reduce rack
Rub the friction loss of generation between 2 and mandril 132.
Using the above-mentioned desirable embodiment according to the utility model as enlightenment, pass through above-mentioned description, related work people
Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real
The content being not limited to novel technical scope on specification, it is necessary to which its technology is determined according to right
Property range.
Claims (10)
1. it is a kind of prevent sampling probe slide sampling mechanism, including mounting base (4), the motor (3) being arranged in mounting base (4),
The rack (2) being arranged in a vertical direction in mounting base (4), the sampling probe for being arranged on rack (2) bottom end are arranged on, the motor
The gear with rack (2) cooperation is provided on output shaft, motor (3) drive gear can drive the rack when rotating
(2) it moves up and down；It is characterized in that, being additionally provided with damping unit (1) on the mounting base (4), the damping unit (1) includes
Bottom plate (11), cover board of the lid on the bottom plate (11), the mandril (13) being arranged between cover board (12) and bottom plate (11), to described
Mandril (13) applied force so that mandril (13) be resisted against rack (2) without the spring (14) on serrated face.
2. the sampling mechanism for preventing sampling probe from sliding according to claim 1, which is characterized in that (14) one end hook of spring
It hangs on the first spring catch (15) on cover board (12), the other end is hooked on the second bullet mounted on mandril (13) one end
On spring pin (16).
3. the sampling mechanism for preventing sampling probe from sliding according to claim 2, which is characterized in that four of the cover board (12)
It is opened up on angle there are four long lumbar hole (121), the cover board (12) is matched by stretching into the screw of long lumbar hole (121) with bottom plate (11)
It closes.
4. the sampling mechanism for preventing sampling probe from sliding according to claim 3, which is characterized in that the mandril (13) is close to tooth
One end of item (2) is the jacking block (132) of strip.
5. prevent according to claim 4 sampling probe slide sampling mechanism, which is characterized in that the rack (2) without saw
The flank of tooth is semi-cylindrical, and the end face that the jacking block (132) contacts with rack (2) is the semi-cylindrical of indent.
6. the sampling mechanism for preventing sampling probe from sliding according to claim 5, which is characterized in that opened up on the bottom plate (11)
Fluted, described groove one end is slidably mounted on the recessed of bottom plate (11) to bottom plate (11) lateral opening, the mandril (13)
In slot.
7. the sampling mechanism for preventing sampling probe from sliding according to claim 6, which is characterized in that the mandril (13) is T-shaped.
8. the sampling mechanism for preventing sampling probe from sliding according to claim any one of 4-7, which is characterized in that the jacking block
(132) friction coefficient of material is 0.1-0.3.
9. the sampling mechanism for preventing sampling probe from sliding according to claim 8, which is characterized in that the material of the jacking block (132)
Matter is acetal resin.
10. the sampling mechanism for preventing sampling probe from sliding according to claim 8, which is characterized in that the material of the rack (2)
For 316L stainless steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721429008.5U CN207556885U (en) | 2017-11-01 | 2017-11-01 | A kind of sampling mechanism for preventing sampling probe from sliding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721429008.5U CN207556885U (en) | 2017-11-01 | 2017-11-01 | A kind of sampling mechanism for preventing sampling probe from sliding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207556885U true CN207556885U (en) | 2018-06-29 |
Family
ID=62681602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721429008.5U Active CN207556885U (en) | 2017-11-01 | 2017-11-01 | A kind of sampling mechanism for preventing sampling probe from sliding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207556885U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110333112A (en) * | 2019-07-02 | 2019-10-15 | 上海大学 | A kind of hand-rail type column shaped deposit divides sampling device |
-
2017
- 2017-11-01 CN CN201721429008.5U patent/CN207556885U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110333112A (en) * | 2019-07-02 | 2019-10-15 | 上海大学 | A kind of hand-rail type column shaped deposit divides sampling device |
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