CN201425555Y

CN201425555Y - Sampling/stirring device

Info

Publication number: CN201425555Y
Application number: CN2009201409903U
Authority: CN
Inventors: 吴斌; 曾健怀
Original assignee: Urit Medical Electronic Co Ltd
Current assignee: Urit Medical Electronic Co Ltd
Priority date: 2009-06-22
Filing date: 2009-06-22
Publication date: 2010-03-17
Anticipated expiration: 2019-06-22

Abstract

The utility model relates to the field of biochemical analyzing devices, in particular to a sampling/stirring device used in a biochemical analyzing device. The sampling/stirring device comprises a lifting mechanism and a rotating mechanism which are placed on a base. The lifting mechanism consists of a lifting stepping motor, a driving lifting belt pulley, a driven lifting belt pulley, a liftingtoothed belt, a ball spline shaft, a spline sleeve and a lifting fixing frame; the lifting toothed belt is in adjacent and mutually parallel arrangement with the ball spline shaft disposed vertically;the rotating mechanism includes a rotary stepping motor, a driving rotary belt pulley, a driven rotary belt pulley and a rotary toothed belt; the spline sleeve is installed inside a bearing support via a bearing, the driven rotary belt pulley is coaxially and fixedly connected with the spline sleeve, the bottom portion of the ball spline shaft is mounted inside the lifting fixing frame via the bearing; clamping sheets disposed on the lifting fixing frame are directly clamped on the lifting toothed belt. The sampling/stirring device has more optimized structure and strong commonality, solves coincidence problem of a rotation center and a linear motion center, and enables the ball spline shaft to maintain stable movement when in rotation.

Description

A kind of sampling/stirring apparatus

Technical field:

The utility model relates to the biochemical analysis apparatus field, is specifically related to the sampling/stirring apparatus that uses on biochemical analysis equipment.

Background technology:

At present, sampling in most of automatic clinical chemistry analyzers and rabbling mechanism all adopt the line slideway mode, perhaps synchronous belt drive mechanism, lead-screw drive mechanism, rack and pinion drive mechanism mode.In recent years, more representationally realize that rectilinear motion and the sampling that rotatablely moves and rabbling mechanism such as State Intellectual Property Office's disclosed notification number on October 24th, 2007 are that the name of CN200965541Y is called the utility model patent of " integrated straight line and the drives structure that rotatablely moves ", the drives structure that discloses a kind of integrated straight line and rotatablely moved, it comprises support, first stepper motor, first gear train, second stepper motor, second gear train and the ball spline pair of vertically placing, the input component of this first stepper motor and this first gear train is connected, the input component of this second stepper motor and this second gear train is connected, this first stepper motor and second stepper motor are fixedly mounted on the bottom and the top of this support respectively, but the output of this first gear train is connected with the splined shaft power of this ball spline pair and its VTOL (vertical take off and landing) of transmission, and it horizontally rotates but the output of this second gear train is connected also transmission with the spline housing power of this ball spline pair.Though this utility model can realize the motion that horizontally rotates of the VTOL (vertical take off and landing) of splined shaft and spline housing separately, and running above-mentioned two kinds of motions the time, but this structure need could realize the vertical displacement movement of splined shaft by being installed in driving device on the smart axle, structure is comparatively complicated, comparatively inconvenience is installed, production cost is higher, and owing to reasons such as mismachining tolerance and mounting technologies, often be difficult to accomplish that the axle center of smart axle in the mechanism is parallel with straight-line center, cause mechanism's eccentric motion up and down easily, may produce the motion imbalance when speed is fast, vibrations and phenomenon such as wave.

The utility model content:

The technical problems to be solved in the utility model is at the deficiencies in the prior art, and a kind of structure optimization is provided, and can make ball spline shaft realize vertical displacement movement and the sampling/stirring apparatus that horizontally rotates motion simultaneously.This device can be realized overlapping of the centre of gyration and rectilinear motion center, makes ball spline shaft also can keep balance under the movement velocity faster.

Sampling/the stirring apparatus of above-mentioned purpose be can realize, elevating mechanism and rotating mechanism on the support comprised, wherein,

Elevating mechanism comprises lifting stepper motor, driving and driven lifting belt wheel, lifting odontoid belt, vertically disposed ball spline shaft, spline housing and lifting fixed mount; The adjacent setting of described lifting odontoid belt with ball spline shaft, and be parallel to each other;

Rotating mechanism comprises rotating stepper motor, driving and driven rotation belt wheel and rotation odontoid belt;

In bearing seat, driven rotation belt wheel is connected with spline housing is coaxial described spline housing by Bearing Installation, ball spline shaft bottom by Bearing Installation in the lifting fixed mount;

Unlike the prior art be:

On the lifting fixed mount intermediate plate is set, intermediate plate directly is clamped on the lifting odontoid belt.

The said structure design, ball spline shaft both can be made vertical displacement movement in the lifting fixed mount, also can rotate, the lifting fixed mount does not rotate thereupon when moving but because splined shaft is rotated, therefore open when moving up and down stepper motor and rotatablely moving stepper motor at the same time, the vertical displacement movement of ball spline shaft and horizontally rotate motion and do not conflict can be realized synchronously.Technique scheme has also solved overlapping of the centre of gyration and rectilinear motion center well, makes that ball spline shaft vibrations when rotating are little, the needle point swing is little, stable action.

Described bearing seat is installed on the top of support, and upper and lower two big zanjon ball bearing are installed in bearing seat, in the dead eye of big zanjon ball bearing spline housing is installed, and cooperates in the spline housing ball spline shaft is installed.

Establish dead eye in the described lifting fixed mount, upper and lower two little zanjon ball bearing are installed in dead eye, the ball spline shaft bottom is installed in the dead eye of little zanjon ball bearing; Be installed with lock sleeve on the ball spline shaft below the lifting fixed mount, lock sleeve limits down the inner ring of little zanjon ball bearing.

Be provided with rotation optocoupler catch at the lower limb of driven rotation belt wheel, corresponding with the rotation optocoupler catch rotation optocoupler that on support, is provided with.

Because this novel described sampling/stirring apparatus can be done 360 ° of rotations arbitrarily, does excessive rotation for fear of this sampling/stirring apparatus, be provided with spacing catch at the lower limb of driven rotation belt wheel, corresponding with the spacing catch stop screw that on support, is provided with.

Compared with prior art, the advantage of this novel sampling/stirring apparatus is:

1, this new structure more optimize, simple compact, the versatility height can be used as the sampling of biochemical analysis equipment and stirs current mechanism and use;

2, solved the COINCIDENCE PROBLEMS at the centre of gyration and rectilinear motion center, made ball spline shaft vibrations when rotating little, stable action;

3, rotating stepper motor can be adjusted arbitrarily in 360 ° interval according to appliance requires, also can rotate in setting regions, more helps the space layout of Biochemical Analyzer;

4, band is connected as a single entity the lifting fixed mount with moving up and down synchronously, and the motion step pitch is more accurate;

5, this device is installed on the Biochemical Analyzer as a module mechanism, debugging and easy to maintenance.

Description of drawings:

Fig. 1: the structural representation of a kind of embodiment of the utility model;

Fig. 2: the sectional view of embodiment shown in Figure 1.

The accompanying drawing sign:

1, rotating stepper motor; 2, support; 201, base plate; 202, support; 203, back up pad; 3 rotation odontoid belts; 4, active rotation belt wheel; 5, rotation optocoupler catch; 6, rotation optocoupler; 7, driven rotation belt wheel; 8, spacing catch; 9, stop screw; 10, bearing seat; 11, ball spline shaft; 12, lifting optocoupler; 13, intermediate plate; 14, spline lasso; 15 little bearing gland plates; 16, lifting fixed mount; 17, lock sleeve; 18, active lifting belt wheel; 19, driven lifting belt wheel; 20, lifting stepper motor; 21, lifting optocoupler catch; 22, lifting odontoid belt; 23, trip bolt; 24, spline housing; 25, bearing ring; 26, big bearing gland plate; 27, big zanjon ball bearing; 28, big bearing spacer; 29, splined nut spacer; 30, little zanjon ball bearing; 31, little bearing spacer.

Embodiment:

As depicted in figs. 1 and 2, the utility model sampling/stirring apparatus comprises support 2 and the elevating mechanism and the rotating mechanism that are installed on the support 2.

Support 202 that described support 2 is fixed with one by base plate 201, with base plate 201 and the back up pad 203 that is fixed on the support 202 are formed.Described elevating mechanism comprises lifting stepper motor 20, active lifting belt wheel 18, driven lifting belt wheel 19, lifting odontoid belt 22, vertically disposed ball spline shaft 11, spline housing 24 and lifting fixed mount 16; Lifting stepper motor 20 is installed in the below of support 202, the upper and lower of support 202 opposite sides is separately installed with driven lifting belt wheel 19 and active lifting belt wheel 18, the axle of lifting stepper motor 20 is with initiatively lifting belt wheel 18 is affixed, two belt wheels connect with lifting odontoid belt 22, and lifting odontoid belt 22 is vertical setting.The back up pad 203 of support is provided with bearing seat 10, upper and lower two big zanjon ball bearing 27 are installed in the bearing seat 10, the inside and outside circle of two big zanjon ball bearing 27 is respectively arranged with splined nut spacer 29 and big bearing spacer 28, the outer ring of the big zanjon ball bearing 27 of top is with big bearing gland plate 26 restrictions, and its inner ring limits with bearing ring; Spline housing 24 is installed in the dead eye of two big zanjon ball bearing 27, cooperates in the spline housing 24 ball spline shaft 11 is installed, this ball spline shaft 11 and the 22 adjacent settings of lifting odontoid belt, and be parallel to each other.Establish dead eye in the described lifting fixed mount 16, upper and lower two little zanjon ball bearing 30 are installed in dead eye, the outer ring of two little zanjon ball bearing 30 is provided with little bearing spacer 31, the outer ring of the little zanjon ball bearing 30 of top is with little bearing gland plate 15 restrictions and with screw retention, and its inner ring is with 14 restrictions of spline lasso; Ball spline shaft 11 bottoms are installed in the dead eye of described two little zanjon ball bearing 30; On the ball spline shaft 11 of lifting fixed mount below 16 lock sleeve 17 is installed, with trip bolt 23 lockings, lock sleeve 17 limits down the inner ring of little zanjon ball bearing 30 simultaneously between lock sleeve 17 and the ball spline shaft 11.Lifting fixed mount 16 is provided with intermediate plate 13, and intermediate plate 13 directly is clamped on the lifting odontoid belt 22, drives the splined shaft vertical displacement movement by lifting odontoid belt 22.Also be provided with lifting optocoupler catch 21 on the described lifter, this catch 21 forms close loop control circuit with the lifting optocoupler 12 that is arranged on support 202 tops, the range of restriction ball spline shaft 11, as shown in Figure 1.

Described rotating mechanism comprises rotating stepper motor 1, active rotation belt wheel 4, driven rotation belt wheel 7 and rotation odontoid belt 3; Rotating stepper motor 1 is installed in the downside of back up pad 203, its axle is affixed with the active rotation belt wheel 4 that is installed on the back up pad 203, spline housing 24 coaxial being connected in 7 of driven rotation belt wheels and back up pad 203 top chocks 10, two belt wheels connect with rotation odontoid belt 3, this rotation odontoid belt 3 is and is horizontally disposed with, as shown in Figure 1.Be provided with rotation optocoupler catch 5 and spacing catch 8 respectively at the diverse location place of the lower limb of driven rotation belt wheel 7, rotate optocoupler 6 with 5 corresponding between active rotation belt wheel 4 on the back up pad 203 and driven rotation belt wheel 7, being provided with of rotation optocoupler catch, rotation optocoupler catch 5 and rotation optocoupler 6 form the closed-loop path, control rotation step pitch; And the back up pad 203 corresponding with spacing catch 8 is provided with stop screw 9, and both cooperate spacing catch 8 and stop screw 9 in order to be limited in the range on the horizontal rotatio direction.

The installation site of rotating stepper motor 1 can be adjusted arbitrarily in 360 ° interval according to appliance requires, also can rotate in setting regions, more helps the space layout of Biochemical Analyzer.

Specifically take a sample (application of sample) or when stirring, sampling probe (sample needle) or stirring rod are installed in the top of ball spline shaft 11, will take a sample again/stirring apparatus is installed on the correct position on the biochemical analysis equipment.Its principle of work is: the power of lifting stepper motor 20 outputs drives lifting fixed mount 16 and ball spline shaft 11 VTOL (vertical take off and landing) by lifting odontoid belt 22; The power of rotating stepper motor 1 output is delivered to driven rotation belt wheel 7 by rotation odontoid belt 3 by active rotation belt wheel 4, and driven rotation belt wheel 7 is delivered on the spline housing 24 again, drives ball spline shaft 11 rotations by spline housing 24.

Claims

1, a kind of sampling/stirring apparatus comprises elevating mechanism and rotating mechanism on the support (2), wherein,

Elevating mechanism comprises lifting stepper motor (20), driving and driven lifting belt wheel (18,19), lifting odontoid belt (22), vertically disposed ball spline shaft (11), spline housing (24) and lifting fixed mount (16); Described lifting odontoid belt (22) and the adjacent setting of ball spline shaft (11), and be parallel to each other;

Rotating mechanism comprises rotating stepper motor (1), driving and driven rotation belt wheel (4,7) and rotation odontoid belt (3);

Described spline housing (24) by Bearing Installation in bearing seat (10), driven rotation belt wheel (7) and coaxial being connected of spline housing (24), ball spline shaft (11) bottom by Bearing Installation in lifting fixed mount (16);

It is characterized in that:

Intermediate plate (13) is set on the lifting fixed mount (16), and intermediate plate (13) directly is clamped on the lifting odontoid belt (22).

2, sampling/stirring apparatus according to claim 1, it is characterized in that: upper and lower two big zanjon ball bearing (27) are installed in the bearing seat (10), in the dead eye of big zanjon ball bearing (27), spline housing (24) is installed, cooperates in the spline housing (24) ball spline shaft (11) is installed.

3, sampling/stirring apparatus according to claim 1 and 2, it is characterized in that: upper and lower two little zanjon ball bearing (30) are installed in the dead eye of lifting fixed mount (16), and ball spline shaft (11) bottom is installed in the dead eye of little zanjon ball bearing (30); Be installed with lock sleeve (17) on the ball spline shaft (11) below the lifting fixed mount (16), lock sleeve (17) limits down the inner ring of little zanjon ball bearing (30).

4, sampling/stirring apparatus according to claim 1 and 2 is characterized in that: the lower limb of driven rotation belt wheel (7) is provided with rotation optocoupler catch (5), and optocoupler (6) is rotated on support (2) be provided with corresponding with rotation optocoupler catch (5).