CN210515629U

CN210515629U - Test bottom turntable structure applied to smoke alarm testing equipment

Info

Publication number: CN210515629U
Application number: CN201921501953.0U
Authority: CN
Inventors: 蔡忠宝
Original assignee: Ningbo Kesaidi Electronic Technology Co ltd
Current assignee: Ningbo Kesaidi Electronic Technology Co ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-05-12
Anticipated expiration: 2029-09-10

Abstract

The utility model discloses a be applied to carousel structure at bottom of test in smoke alarm test equipment, include: the upper end face of the main shaft chassis is fixedly connected with a main shaft of the smoke alarm testing equipment; the lower end face of the test turntable is fixedly provided with a product to be tested, the upper end face of the test turntable is sunken to form a groove matched with the shape of the main shaft chassis, and the lower end face of the main shaft chassis is detachably embedded in the groove. Its technical scheme makes the dismouting of being convenient for on the one hand, can be with supporting product and the test carousel that awaits measuring assembly to the main shaft chassis on, on the other hand can realize the absolute positioning between main shaft and the test carousel by groove structure in the dismouting process, and convenient and reliable, the precision is higher.

Description

Test bottom turntable structure applied to smoke alarm testing equipment

Technical Field

The utility model relates to a smoke alarm test equipment technical field especially relates to a be applied to carousel structure at bottom of test in smoke alarm test equipment.

Background

In the sensitivity test of the smoke alarm, the alarm is generally arranged on the lower end face of a test turntable in an inverted mode. Referring to fig. 1, in a conventional installation manner, a test turntable 14 is fixedly connected with a test shaft 13 through a bolt 17, a lower end face of the test turntable 14 is connected with a test base 15 through a screw 18, and when a product 16 is installed, the product 16 is directly installed on the lower end face of the test base 15. When the test model needs to be replaced, the test turntable 14 is detached, the test base 15 of the model to be tested is replaced, the test base is installed back to the lower end face of the test turntable 14 through the screws 18, and then the test product 16 is installed. In the whole process, the disassembly and the assembly are very complicated.

Meanwhile, different product models have different test bases because the test bases are related to the product models. Firstly, the main shaft and the test turntable are not absolutely positioned, even if an absolute positioning point (zero point) is additionally arranged on the main shaft, the control of the rotating direction is complicated, and the precision is large, so that the sensitivity test result of the product is influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above problems in the prior art, a testing base turntable structure applied to a smoke alarm testing device is provided to facilitate disassembly and assembly and realize absolute positioning between a spindle and a testing turntable, so as to overcome the technical defects.

The specific technical scheme is as follows:

a test base carousel structure for use in smoke alarm test equipment, comprising:

the upper end face of the main shaft chassis is fixedly connected with a main shaft of the smoke alarm testing equipment;

the lower end face of the test turntable is fixedly provided with a product to be tested, the upper end face of the test turntable is sunken to form a groove matched with the shape of the main shaft chassis, and the lower end face of the main shaft chassis is detachably embedded in the groove.

Preferably, at least one magnet is embedded on the bottom surface of the groove.

Preferably, the shapes of the main shaft chassis and the groove are both triangular integrally.

Preferably, the shape of the main shaft chassis and the groove are equilateral triangle, and one corner of the main shaft chassis and the groove is provided with a positioning edge.

Preferably, the number of the magnets is three, and the three magnets are uniformly arranged at three corner positions of the groove.

Preferably, the lower end of the main shaft is connected to the central position of the main shaft chassis through a bolt.

Preferably, the bottom surface of the groove is recessed to form a containing groove for containing a cap of the bolt.

Preferably, the lower end face of the test turntable is fixedly connected with a test base through a screw, and the product to be tested is fixedly arranged on the lower end face of the test base.

The beneficial effects of the above technical scheme are that:

be applied to test end carousel structure in smoke alarm test equipment including dismantling continuous main shaft chassis and test carousel for the dismouting of being convenient for on the one hand can be with supporting product and the test carousel unit-installment to the main shaft chassis that awaits measuring, and on the other hand can realize the absolute positioning between main shaft and the test carousel by groove structure in the dismouting in-process, and convenient and reliable, the precision is higher.

Drawings

FIG. 1 is a schematic structural view of a test base carousel structure used in a smoke alarm testing apparatus in the prior art;

FIG. 2 is a schematic structural view of a testing bottom turntable structure applied in the smoke alarm testing device of the present invention;

FIG. 3 is a top view of a test turntable in a test base turntable configuration for use in smoke alarm testing apparatus according to the present invention;

FIG. 4 is a cross-sectional view of a test turntable in a test base turntable configuration for use in smoke alarm testing apparatus in accordance with the present invention;

FIG. 5 is a top view of the spindle chassis in the testing bottom turntable configuration of the present invention applied in a smoke alarm testing device;

fig. 6 is a cross-sectional view of the main shaft chassis in the testing bottom turntable structure applied in the smoke alarm testing device of the present invention;

figure 7 is the utility model discloses be applied to the test end carousel structure specific application schematic diagram in smoke alarm test equipment.

Detailed Description

In order to make the technical means, creation features, achievement purposes and effects of the present invention easy to understand, the following embodiments are specifically illustrated in conjunction with the accompanying drawings.

Referring to fig. 1 to 7, in order to clearly show the structural features of the present invention, only the top plate of the chassis is shown in the drawings, the controller is omitted, and the stepping motor and the absolute value rotary encoder are schematically shown. And the up-down direction as shown on the paper surface in fig. 2 is defined as the up-down direction in the present invention.

The utility model provides a be applied to test end carousel structure in smoke alarm test equipment includes:

the upper end face of the main shaft chassis 5 is fixedly connected with a main shaft 4 of the smoke alarm testing equipment;

the lower end face of the test turntable 6 is fixedly provided with a product 12 to be tested, the upper end face is sunken to form a groove 9 matched with the shape of the main shaft chassis 5, and the lower end face of the main shaft chassis 5 is detachably embedded in the groove 9.

Based on above-mentioned technical scheme, be applied to test end carousel structure in smoke alarm test equipment including dismantling continuous main shaft chassis 5 and test carousel 6 for the dismouting of being convenient for on the one hand can be with supporting product 12 and the test carousel unit mount that awaits measuring to main shaft chassis 5 on, and on the other hand can realize the absolute positioning between main shaft 4 and the test carousel 6 by groove structure at the dismouting in-process, and convenient and reliable, the precision is higher.

In a preferred embodiment, as shown in particular in fig. 2 to 6, at least one magnet 7 is embedded on the bottom surface of the recess 9 for the purpose of easy removal, but the connection can also be made by means of fasteners. Obviously, the spindle base plate 5 and the test turntable 6 are both made of metal. Further, the shapes of the main shaft chassis 5 and the groove 9 are both triangular integrally, but may also be quadrilateral, pentagonal or other irregular shapes so as to facilitate installation and positioning. Further, the shape of the spindle chassis 5 and the groove 9 is an equilateral triangle as a whole, and one corner of the equilateral triangle is provided with a positioning edge so as to facilitate installation and positioning. Further, the number of the magnets 7 is three, and the three magnets 7 are uniformly arranged at three corner positions of the groove 9. Further, the lower end of the main shaft 4 is connected to the center of the main shaft base plate 5 by a bolt 10. Further, the bottom surface of the recess 9 is recessed to form a receiving groove 11 for receiving a cap of the bolt 10. Further, the lower end face of the test turntable 6 is fixedly connected with a test base 8 through a screw, and a product 12 to be tested is fixedly arranged on the lower end face of the test base 8.

With further reference to fig. 7, the smoke alarm testing device applied by the scheme comprises: a case having a controller therein; the stepping motor 2 is longitudinally and fixedly arranged on the top plate 1 of the case, the front end of a motor shaft of the stepping motor 2 extends downwards into the case, and the rear end of the motor shaft extends upwards out of a rear end cover of a case of the stepping motor 2; the absolute value rotary encoder 3 is longitudinally arranged above the stepping motor 2 in an inverted mode, and a rotating shaft of the absolute value rotary encoder 3 is in transmission connection with the rear end of a motor shaft; the main shaft 4 is vertically arranged in the case, the upper end of the main shaft 4 is connected with the front end of a motor shaft, the lower end of the main shaft 4 is connected with the testing bottom turntable structure, and the stepping motor 2 and the absolute value rotary encoder 3 are respectively electrically connected with the controller.

Based on the technical scheme, the smoke alarm testing equipment can feed back the information of the absolute position through the absolute value rotary encoder 3, and has complete detection compensation capability on the step loss of the stepping motor 2 through the controller, so that the angle of the measured range is completely correct, the repeated precision of the measuring result is ensured, the full-automatic test in 8-32 ranges is realized, and meanwhile, the to-be-tested product 12 is convenient to disassemble and assemble.

In addition, the rotating shaft of the absolute value rotary encoder 3 is connected to the rear end of the motor shaft through a coupling. Further, the main shaft 4 and the front end of the motor shaft are integrated, or the upper end of the main shaft 4 is connected with the front end of the motor shaft through a coupler, so that the concentric purpose is realized. It is obvious that the spindle chassis 5, the test turntable 6, the test base 8 and the product 12 to be tested are all suspended inside the cabinet by the spindle 4.

In the concrete test, the product 12 to be tested, the test base 8 and the test turntable 6 are connected into a whole due to independent matching, the whole body is arranged on the lower end face of the main shaft chassis 5 through the groove 9 and the magnet 7, and due to the non-circular structure of the groove 9, the automatic realization of the original point setting and positioning during the installation is realized. The controller drives the stepping motor 2 to operate, the spindle 4 rotates, whether the rotation is in place is detected by the absolute value rotary encoder 3 and fed back to the controller, the controller is a PLC or a single chip microcomputer, and the stepping motor 2 and the encoder can be electrically connected with the controller through a lead, so that the difference of the test directions caused by the step loss of the stepping motor 2 can be overcome. The difference in angle is determined by the absolute rotary encoder 3 and the MCU records the data relating to each model of product to a database within the device, thus ensuring that the angle data for each corresponding model of product is not confused and correct. The controller can also use MIC to detect the sound of the product when alarming or current change when the product alarms, and the controller can be combined to perform full-automatic orientation test. Similarly, other sensitivity test items such as repeatability tests and high and low temperature tests can be automatically tested.

In addition, the above-mentioned chassis interior has smoke generating device, concentration detection device, blower that the smoke concentration tests and alarms and must, in order to form the airtight smog chamber in the chassis interior, have smoke concentration threshold value reference value and corresponding executive circuit, alarm in the products 12 to be tested, still set up MIC in the chassis in order to detect the sound when alarming likewise, it is the conventional technical principle, therefore omit the repeated description here.

The foregoing is only a preferred embodiment of the present invention, which is illustrative, not limiting. Those skilled in the art will appreciate that many variations, modifications, and equivalents may be made thereto without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A test end turntable structure applied to smoke alarm testing equipment is characterized by comprising:

the upper end face of the main shaft chassis (5) is fixedly connected with a main shaft (4) of the smoke alarm testing equipment;

the lower end face of the test turntable (6) is fixedly provided with a product (12) to be tested, the upper end face is sunken to form a groove (9) matched with the shape of the main shaft chassis (5), and the lower end face of the main shaft chassis (5) is detachably embedded in the groove (9).

2. A test base carousel structure for use in a smoke alarm testing device according to claim 1, wherein the recess (9) has at least one magnet (7) embedded in its bottom surface.

3. A test base carousel structure for use in a smoke alarm testing device according to claim 2, wherein the spindle chassis (5) and the recess (9) are both generally triangular in shape.

4. A test base carousel structure for use in a smoke alarm testing device according to claim 3, wherein the spindle chassis (5), the recess (9) are overall equilateral triangular in shape, with one of the corners having a locating edge.

5. The test carousel structure for use in a smoke alarm testing device according to claim 4, wherein the number of magnets (7) is three, and three magnets (7) are evenly arranged at three corner positions of the recess (9).

6. A test base carousel structure for use in a smoke alarm testing device according to claim 1, wherein the lower end of the spindle (4) is attached to the central position of the spindle chassis (5) by a bolt (10).

7. The test base carousel structure for use in a smoke alarm testing device according to claim 6, wherein the recesses (9) are further recessed on the bottom surface thereof with a receiving slot (11) for receiving a cap of the bolt (10).

8. The test base turntable structure applied to the smoke alarm testing equipment according to claim 1, wherein the lower end face of the test turntable (6) is fixedly connected with a test base (8) through a screw, and the product to be tested (12) is fixedly arranged on the lower end face of the test base (8).