CN211822256U

CN211822256U - Adjusting device for hollow cathode lamp tube seat

Info

Publication number: CN211822256U
Application number: CN202020863675.XU
Authority: CN
Inventors: 杨梅
Original assignee: Chongqing Mintai New Agrotech Development Group Co ltd
Current assignee: Chongqing Mintai New Agrotech Development Group Co ltd
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2020-10-30
Anticipated expiration: 2030-05-21

Abstract

The utility model relates to an auxiliary device of a hollow cathode lamp in an atomic fluorescence instrument, in particular to an adjusting device of a hollow cathode lamp tube seat, which comprises a fixing frame, a horizontal adjusting mechanism and a vertical adjusting mechanism; the vertical adjusting mechanism comprises a screw rod and a first power source for driving the screw rod to rotate, a supporting plate capable of moving up and down along the fixing frame is connected to the fixing frame, a threaded sleeve is fixedly connected to the supporting plate, and the threaded sleeve is in threaded connection with the screw rod; the horizontal adjusting mechanism comprises a supporting plate, the supporting plate is fixedly connected with the supporting plate, a second power source and a gear driven to rotate by the second power source are arranged on the supporting plate, a rack meshed with the gear is fixedly connected to the hollow cathode lamp tube seat, and the hollow cathode lamp tube seat is connected to the supporting plate in a sliding mode along the horizontal direction. The position adjustment of the hollow cathode lamp tube seat is realized through an electric mode, the operation is more convenient and faster, the accuracy is high, the motor can be linked with an external controller, the whole detection process is more integrated, and the detection efficiency is improved.

Description

Adjusting device for hollow cathode lamp tube seat

Technical Field

The utility model relates to an auxiliary device of hollow cathode lamp among the atomic fluorescence appearance especially relates to a hollow cathode lamp tube seat's adjusting device.

Background

The atomic fluorescence instrument mainly comprises a hollow cathode lamp (excitation light source), an atomizer, an optical ring, a detector, a chimney and the like, wherein the hollow cathode lamp and the detector are arranged on a shell of the optical ring, the chimney and the atomizer are respectively arranged at an upper opening and a lower opening of the optical ring, and flame ignited at an outlet of the atomizer is positioned in the optical ring.

In the use process, the light beam emitted by the excitation light source needs to be aligned to the central area of the flame at the outlet of the atomizer, otherwise, the detection effect is affected, and therefore, the position of the hollow cathode lamp needs to be adjusted in the horizontal and vertical directions, the existing adjustment mode is usually manual alignment, the operation is troublesome, the inventor applies for a patent with the publication number of CN209213572U for the problem, and the inventor finds that the device still has the following problems in the long-term use process:

1. when the position is adjusted, a plurality of knobs need to be manually rotated, the operation process is still relatively complex, and the efficiency is relatively low;

2. the adjustment mode of the knob is difficult to meet the requirement of fine adjustment, and the detection precision is influenced;

3. the transmission mechanism of the device for vertical adjustment is of a shear-type structure, the shear-type structure is poor in stability and easy to deform, adjustment precision is poor, adjustment is achieved by changing the rest chord angles, the front and rear cosine angles of the structure are inconsistent, and adjustment errors are large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adjusting device of hollow cathode tube seat to solve complex operation, the poor problem of regulation precision.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

an adjusting device of a hollow cathode tube seat comprises a fixed frame, a horizontal adjusting mechanism and a vertical adjusting mechanism, wherein the horizontal adjusting mechanism and the vertical adjusting mechanism are arranged on the fixed frame;

the fixing frame is used for fixing the horizontal adjusting mechanism and the vertical adjusting mechanism;

the vertical adjusting mechanism comprises a screw rod and a first power source for driving the screw rod to rotate, a supporting plate capable of moving up and down along the fixing frame is connected to the fixing frame, a threaded sleeve is fixedly connected to the supporting plate, and the threaded sleeve is in threaded connection with the screw rod;

the horizontal adjusting mechanism comprises a supporting plate, the supporting plate is fixedly connected with the supporting plate, a second power source and a gear driven to rotate by the second power source are arranged on the supporting plate, a rack meshed with the gear is fixedly connected to the hollow cathode lamp tube seat, and the hollow cathode lamp tube seat is connected to the supporting plate in a sliding mode along the horizontal direction.

The working principle of the scheme is as follows:

the adjusting device is integrally fixed at a designated position in the atomic fluorescence instrument by using a fixing frame. When the position of the lamp tube in the vertical direction needs to be adjusted, the screw rod is driven to rotate through the first power source, the screw sleeve is in screw fit with the screw rod, the screw sleeve is fixed with the supporting plate, the supporting plate is connected to the fixing frame in a sliding mode in the vertical direction, and therefore the screw rod drives the supporting plate and the supporting plate to vertically move together through the screw sleeve when rotating, namely the hollow cathode lamp tube seat is driven to move in the vertical direction, and the lifting of the hollow cathode lamp tube seat is achieved.

When the horizontal position of the hollow cathode lamp tube seat needs to be adjusted, the gear is driven to rotate through the second power source, the rack is meshed with the gear, the rack is fixed with the hollow cathode lamp tube seat, the hollow cathode lamp tube seat is connected to the supporting plate in a sliding mode along the horizontal direction, therefore, the gear can drive the hollow cathode lamp tube seat to move horizontally along the supporting plate through the rack during rotation, and adjustment of the hollow cathode lamp tube seat in the horizontal direction is achieved.

Preferably, the fixing frame comprises a vertical plate, a sliding groove is formed in the vertical plate in the vertical direction, and a sliding block in sliding fit with the sliding groove is fixedly arranged on the supporting plate. The sliding fit between the supporting plate and the fixing frame is realized through the matching mode of the sliding groove and the sliding block, and the sliding groove and the fixing frame have the advantages of simple structure and easiness in installation.

Preferably, the sliding groove is a dovetail groove. The sliding groove is arranged to be a dovetail groove, so that the sliding block and the sliding groove are matched more stably, and the overall stability is improved.

Preferably, the fixing frame further comprises a transverse plate, the transverse plate is fixedly connected with the vertical plate, and the first power source is fixedly installed on the transverse plate. The installation of the vertical adjusting mechanism can be more convenient and faster by arranging the transverse plate.

Preferably, the support plate is provided with a guide rail along the horizontal direction, and the hollow cathode lamp tube seat is provided with a guide block in sliding fit with the guide rail. The matching mode of the guide rail and the guide block can lead the sliding between the hollow cathode tube seat and the support plate to be more stable, and the adjustability is better.

Preferably, the first power source and the second power source are both stepping motors, and the stepping motors have the characteristics of convenience in control and high control precision, so that the adjustment precision of the hollow cathode lamp tube seat is higher.

The beneficial effect of this scheme: this scheme realizes the position control of hollow cathode tube seat through electronic mode, during the operation only need adjust corresponding numerical value can, operate convenient and fast more, and the control of motor is compared artifically its accuracy nature and has obtained great promotion moreover, and the motor still can link with outside controller, makes the whole more integration of testing process, improves detection efficiency.

Drawings

FIG. 1 is a schematic view of example 1;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic structural view of embodiment 2;

FIG. 5 is a schematic view of example 2.

Reference numerals in the drawings of the specification include: the device comprises a first motor 1, a transverse plate 2, a bottom plate 3, a threaded sleeve 4, a screw rod 5, a vertical plate 6, a supporting plate 7, a second motor 8, a hollow cathode lamp tube seat 9, a sliding block 10, a supporting plate 11, a dovetail groove 12, a guide rail 14, a guide block 13, a rack 15 and a gear 16.

Detailed Description

The following is further detailed by way of specific embodiments:

example 1

The embodiment is basically as shown in the attached figures 1 to 3: the utility model provides an adjusting device of hollow cathode lamp tube seat, this device are used for realizing the regulation to the fluorescent tube position, make the light of hollow cathode lamp transmission aim at appointed position.

The device comprises a fixed frame, a horizontal adjusting mechanism and a vertical adjusting mechanism, wherein the horizontal adjusting mechanism and the vertical adjusting mechanism are used for adjusting the position of a hollow cathode lamp tube seat 9.

As shown in fig. 1, the fixing frame includes a horizontal plate 2 and a vertical plate 6, and the lower side of the vertical plate 6 and the left side of the horizontal plate 2 are fixed together by riveting or welding. Both sides all outwards extend around diaphragm 2, and a plurality of mounting holes have all been seted up to the part of diaphragm 2 both sides outwards extending, and diaphragm 2 is used for fixing the vertical adjustment mechanism's of being convenient for fixed mounting with the casing in the atomic fluorescence appearance.

Referring to fig. 1 and 3, the vertical adjustment mechanism includes a first power source, a support plate 7, a base plate 3, a lead screw 5, and a nut 4.

First power supply is first motor 1 in this embodiment, and first motor 1 fixed mounting is on diaphragm 2, specifically, and diaphragm 2 is located first motor 1 upside, and the through-hole that can supply motor output shaft to pass is seted up at diaphragm 2 middle part, and diaphragm 2 is fixed through the screw with first motor 1. The output shaft of the first motor 1 is vertically arranged upwards, and the screw rod 5 is coaxially and fixedly connected with the output shaft of the first motor 1 through fixing structures such as a coupler.

The supporting plate 7 is slidably mounted on the vertical plate 6 along the vertical direction, specifically, a sliding groove is formed in the right side surface of the vertical plate 6, the sliding groove is a dovetail groove 12 in the embodiment, a sliding block 10 in sliding fit with the dovetail groove 12 is integrally formed on the left side surface of the supporting plate 7, and the section of the sliding block 10 is in a trapezoidal shape matched with the dovetail groove 12, so that the limiting of the sliding block 10 and the dovetail groove 12 in the horizontal direction and the guiding in the vertical direction are realized.

The bottom plate 3 is fixed on the right side surface of the supporting plate 7 by welding or screw connection and the like, and the bottom plate 3 is positioned above the transverse plate 2. The middle part of the bottom plate 3 is provided with a fixing hole, and the threaded sleeve 4 is fixed in the fixing hole of the bottom plate 3 in a fixing mode such as a screw. The screw sleeve 4 is sleeved on the screw rod 5, an internal thread in threaded fit with the screw rod 5 is arranged on the inner wall of the screw sleeve 4, and the screw thread between the screw sleeve 4 and the screw rod 5 is not self-locked.

During vertical adjustment, the first motor 1 is started to drive the screw rod 5 to rotate, and as the screw sleeve 4 and the supporting plate 7 are fixed into a whole through the bottom plate 3 and the dovetail groove 12 limits the rotation of the supporting plate 7 in the horizontal direction, the rotation of the screw sleeve 4 in the horizontal direction is also limited, so that the screw sleeve 4 can lift along the screw rod 5 when the screw rod 5 rotates.

Referring to fig. 1 and 3, the horizontal adjustment mechanism includes a stay 11, a second power source, a rack and pinion structure, and a rail structure.

The support plate 11 is a horizontal plate, and the bottom surface of the right part of the support plate 11 and the top end of the support plate 7 are fixed through screws, so that the horizontal adjusting mechanism and the support plate 7 are connected into a whole, and thus, the screw sleeve 4 can drive the horizontal adjusting mechanism to integrally lift when driving the support plate 7 to lift.

The second power source in this embodiment is a second motor 8, and the second motor 8 is fixed on the bottom surface of the support plate 11 through a screw. The output shaft of the second motor 8 is vertically upward, and the support plate 11 is provided with a through hole for the output shaft of the second motor 8 to pass through.

A gear shaft is fixed on the output shaft of the second motor 8 through screws, the gear shaft is provided with a gear 16, and a rack 15 meshed with the gear 16 is fixed at the bottom of the hollow cathode lamp tube seat 9.

The guide rail structure is used for guiding the horizontal movement of the hollow cathode lamp tube seat 9 and comprises a guide rail 14 and a guide block 13, the guide rail 14 is fixedly installed on the upper surface of the right side of the support plate 11 through screws, the guide rail 14 is parallel to the rack 15, the guide block 13 is fixedly installed on the bottom surface of the hollow cathode lamp tube seat 9, the guide block 13 is vertically opposite to the guide rail 14, and the guide block 13 is in sliding fit with the guide rail 14. When the horizontal adjustment is carried out, the second motor 8 drives the gear 16 to rotate, and the gear 16 drives the guide block 13 to horizontally move along the guide rail 14 through the rack 15, namely, the hollow cathode tube base 9 is driven to horizontally move.

Further, in order to promote the maneuverability and the adjustment precision of this device, step motor is all selected for use to first motor 1 and second motor 8 in this embodiment.

Example 2

As shown in fig. 4 and 5, the present embodiment is different from embodiment 1 in that power sources of the horizontal adjustment mechanism and the vertical adjustment mechanism are different, and the power sources of both the horizontal adjustment mechanism and the vertical adjustment mechanism in the present embodiment are manual, specifically, a first motor in the vertical adjustment mechanism is replaced by a first knob 17, the first knob 17 is fixed to a screw rod by a screw or by welding, a second motor in the horizontal adjustment mechanism is replaced by a second knob 18, the second knob 18 is fixed to a gear 16 by a screw, and when in use, the first knob 17 and the second knob 18 are rotated.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. An adjusting device of a hollow cathode tube base is characterized in that: comprises a fixed frame, a horizontal adjusting mechanism and a vertical adjusting mechanism which are arranged on the fixed frame;

the vertical adjusting mechanism comprises a screw rod (5) and a first power source for driving the screw rod (5) to rotate, a supporting plate (7) capable of moving up and down along the fixing frame is connected to the fixing frame, a threaded sleeve (4) is fixedly connected to the supporting plate (7), and the threaded sleeve (4) is in threaded connection with the screw rod (5);

the horizontal adjusting mechanism comprises a support plate (11), the support plate (11) is fixedly connected with the support plate (7), a second power source and a gear (16) driven to rotate by the second power source are arranged on the support plate (11), a rack (15) meshed with the gear (16) is fixedly connected to the hollow cathode lamp tube seat (9), and the hollow cathode lamp tube seat (9) is connected to the support plate (11) in a sliding mode along the horizontal direction.

2. The apparatus of claim 1, wherein the adjusting means comprises: the fixing frame comprises a vertical plate (6), a sliding groove is formed in the vertical plate (6) in the vertical direction, and a sliding block (10) in sliding fit with the sliding groove is fixedly arranged on the supporting plate (7).

3. The apparatus of claim 2, wherein the adjusting means comprises: the sliding groove is a dovetail groove (12).

4. An adjustment device for a hollow cathode tube holder according to any one of claims 1 to 3, wherein: the fixing frame further comprises a transverse plate (2), the transverse plate (2) is fixedly connected with the vertical plate (6), and the first power source is fixedly installed on the transverse plate (2).

5. The adjustment device for a hollow cathode tube holder according to claim 4, wherein: the support plate is provided with a guide rail (13) along the horizontal direction, and the hollow cathode lamp tube seat (9) is provided with a guide block (14) in sliding fit with the guide rail (13).

6. An adjustment device for a hollow cathode tube holder according to any one of claims 1 to 3, wherein: the support plate is provided with a guide rail (13) along the horizontal direction, and the hollow cathode lamp tube seat (9) is provided with a guide block (14) in sliding fit with the guide rail (13).

7. The adjustment device for a hollow cathode tube holder according to claim 4, wherein: the first power source and the second power source are both stepping motors.

8. The apparatus of claim 6, wherein the adjusting means comprises: the first power source and the second power source are both stepping motors.

9. The adjustment device for a hollow cathode tube holder according to claim 1, 2, 3 or 5, wherein: the first power source and the second power source are both stepping motors.