CN216695316U

CN216695316U - Temperature uniformity calibration positioning device for environmental test chamber

Info

Publication number: CN216695316U
Application number: CN202122518229.2U
Authority: CN
Inventors: 周知贵
Original assignee: Kunshan Eternal Norm Technology Service Inc
Current assignee: Kunshan Eternal Norm Technology Service Inc
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-06-07
Anticipated expiration: 2031-10-20

Abstract

The utility model discloses an environmental test chamber temperature uniformity checking and positioning device which comprises a base, wherein a sliding groove is formed in the top of the base, a sliding block is connected in the sliding groove in a sliding mode, two supporting blocks are fixedly connected to the top of the base, a screw rod is inserted between the two supporting blocks and is in threaded connection with the sliding block, a first fixing cylinder is fixedly connected to the top of the sliding block, a rotating shaft is rotatably connected between the circumferential inner walls of the first fixing cylinder, a first gear is fixedly connected to the outer wall of the rotating shaft, two sliding ways are arranged on the circumferential inner wall of the first fixing cylinder and are oppositely arranged, a sliding strip is connected in the sliding way, a first rack is fixedly connected to one side of the sliding strip, the two first racks are meshed with the first gear, a fixing frame is fixedly connected to one end of the first rack, and a guide wheel is rotatably connected to one side of the fixing frame. The utility model can accurately position the device in the box and improve the accuracy of the temperature measuring position.

Description

Environmental test case temperature homogeneity calibration positioner

Technical Field

The utility model relates to the technical field of environmental test chambers, in particular to a temperature uniformity verification positioning device for an environmental test chamber.

Background

The requirements of the uniformity check of the temperature field of an upper calibration plane, a middle calibration plane and a lower calibration plane of an environmental test box are specified in national measurement technical specifications JJF1101-2003 of China: under the no-load or load condition of the environmental test chamber, 9 temperature test points are uniformly distributed in a space plane, and the temperature of each point and the temperature of the central point of the chamber body within 30min are recorded, so that the temperature deviation, the temperature uniformity and the temperature fluctuation in the chamber body meet the requirements of a specified range, and therefore, the temperature uniformity calibration positioning device of the environmental test chamber is required to be used.

At present, the existing temperature uniformity calibration and positioning device for the environmental test chamber mostly has the following defects: when the temperature measuring device is used, the device is inaccurately positioned in the box, so that the temperature measuring position is inaccurate, the measuring efficiency of the temperature of the environmental test box is influenced, and the requirements of people cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, and provides a temperature uniformity verification positioning device for an environmental test chamber.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the environmental test chamber temperature uniformity checking and positioning device comprises a base, wherein a sliding groove is formed in the top of the base, a sliding block is connected in the sliding groove in a sliding manner, two supporting blocks are fixedly connected to the top of the base, a screw rod is inserted between the two supporting blocks and is in threaded connection with the sliding block, a first fixing cylinder is fixedly connected to the top of the sliding block, a rotating shaft is rotatably connected between the inner circumferential walls of the first fixing cylinder, a first gear is fixedly connected to the outer wall of the rotating shaft, two sliding ways are arranged on the inner circumferential wall of the first fixing cylinder and are oppositely arranged, a sliding strip is connected in the sliding manner, a first rack is fixedly connected to one side of the sliding strip and is meshed with the first gear, a fixing frame is fixedly connected to one end of the first rack, a guide wheel is rotatably connected to one side of the fixing frame, and a pointer is fixedly connected to one side of the sliding block, the top of base is equipped with the scale strip, and the scale strip is located one side of pointer.

As a further scheme of the utility model, one end of the screw rod is fixedly provided with a knob, and the outer wall of the knob is sleeved with an anti-slip sleeve.

As a further scheme of the present invention, the top of the first fixed cylinder is fixedly connected with a bottom plate, and one end of the bottom plate is fixedly connected with a motor.

As a further scheme of the present invention, an output shaft of the motor is fixedly connected with a rotating disc, and one side of the rotating disc is fixedly connected with an electric push rod.

As a further scheme of the utility model, the top end of the electric push rod is fixedly connected with a second fixed cylinder, and a second gear is rotatably connected between the circumferential inner walls of the second fixed cylinder.

As a further scheme of the present invention, the circumferential inner wall of the second fixed cylinder is slidably connected with two second racks, the two second racks are disposed opposite to each other, and the two second racks are engaged with the second gear.

As a further scheme of the present invention, one end of the second rack is fixedly connected with a fixed disk.

As a further scheme of the utility model, the outer wall of one side of the fixed disc and the outer wall of the top of the second fixed cylinder are both fixedly connected with mounting blocks, and one side of each mounting block is provided with a mounting hole.

The utility model has the beneficial effects that:

1. according to the utility model, the screw rod rotates to drive the pointer to move along the scale strip, so that the pointer stops at the central point of the width of the environmental test chamber, the fixing frame is pulled outwards to enable the first rack to move outwards, and when the two guide wheels are respectively contacted with the inner walls of the two sides of the environmental test chamber, the base is positioned at the central position of the length of the environmental test chamber, so that the device is accurately positioned in the chamber, and the accuracy of the temperature measurement position is improved.

2. The thermocouple is driven to move back and forth under the matching of the motor and the electric push rod, so that the temperature of the temperature test point in the environmental test chamber is measured, and the thermocouple temperature measuring device is simple to operate, convenient and quick.

3. According to the utility model, the second rack slides outwards by pulling the fixed disk, so that the fixed disk is contacted with the inner walls of the two sides of the environmental test chamber, and the measurement of the temperature measuring point in the environmental test chamber at the later stage is facilitated.

Drawings

Fig. 1 is a schematic perspective view of an environmental test chamber temperature uniformity calibration positioning device according to the present invention;

FIG. 2 is a schematic side view of an environmental test chamber temperature uniformity calibration positioning device according to the present invention;

fig. 3 is a schematic view of a partial three-dimensional structure of the temperature uniformity calibration positioning device for an environmental test chamber according to the present invention.

Fig. 4 is a schematic cross-sectional structural view of a first fixing cylinder of the temperature uniformity calibration positioning device for an environmental test chamber according to the present invention;

fig. 5 is a schematic cross-sectional structural view of a second fixing cylinder of the temperature uniformity calibration positioning device for an environmental test chamber according to the present invention.

In the figure: 1. a base; 2. a chute; 3. a slider; 4. supporting a block; 5. a screw; 6. a first fixed cylinder; 7. a rotating shaft; 8. a first gear; 9. a slideway; 10. a slide bar; 11. a first rack; 12. a fixed mount; 13. a guide wheel; 14. a scale bar; 15. a pointer; 16. a knob; 17. a base plate; 18. rotating the disc; 19. a motor; 20. an electric push rod; 21. mounting blocks; 22. mounting holes; 23. fixing the disc; 24. a second fixed cylinder; 25. a second gear; 26. a second rack.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. It should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and their meaning in the context of this patent may be understood by those skilled in the art as appropriate.

Referring to fig. 1-5, an environmental test chamber temperature uniformity verification positioning device comprises a base 1, a chute 2 is arranged at the top of the base 1, a slider 3 is slidably connected in the chute 2, two support blocks 4 are fixed at the top of the base 1 through bolts, a screw 5 is inserted between the two support blocks 4, the screw 5 is in threaded connection with the slider 3, a first fixed cylinder 6 is fixed at the top of the slider 3 through bolts, a rotating shaft 7 is rotatably connected between the circumferential inner walls of the first fixed cylinder 6, a first gear 8 is connected to the outer wall of the rotating shaft 7 through a key, two slide ways 9 are arranged on the circumferential inner wall of the first fixed cylinder 6, the two slide ways 9 are oppositely arranged, a slide bar 10 is slidably connected in the slide ways 9, a first rack 11 is fixed on one side of the slide bar 10 through a bolt, the slide bar 10 slides in the slide ways 9 to guide the slide of the first rack 11, the two first racks 11 are meshed with the first gear 8, one end of first rack 11 is passed through the bolt fastening and is had mount 12, one side of mount 12 is rotated and is connected with guide pulley 13, outside pulling mount 12 makes first rack 11 outwards remove, because two first racks 11 mesh with first gear 8 mutually, so, two first racks 11 outwards gliding speed is the same, contact with the both sides inner wall of environmental test case respectively as two guide pulleys 13, at this moment, it is located the central point of environmental test case length to explain base 1, one side of slider 3 has pointer 15 through the bolt fastening, the top of base 1 is equipped with scale bar 14, scale bar 14 is located one side of pointer 15, screw rod 5 rotates, thereby make slider 3 slide in spout 2, thereby drive pointer 15 and remove along scale bar 14, thereby make pointer 15 stop at the central point of environmental test case width.

In the utility model, one end of a screw rod 5 is fixedly provided with a knob 16, the outer wall of the knob 16 is sleeved with an anti-slip sleeve, so that the screw rod 5 can conveniently rotate, the top of a first fixed cylinder 6 is fixedly provided with a bottom plate 17 through a bolt, one end of the bottom plate 17 is fixedly provided with a motor 19 through a bolt, the output shaft of the motor 19 is fixedly provided with a rotating disc 18 through a bolt, one side of the rotating disc 18 is fixedly provided with an electric push rod 20 through a bolt, the top end of the electric push rod 20 is fixedly provided with a second fixed cylinder 24 through a bolt, a second gear 25 is rotatably connected between the circumferential inner walls of the second fixed cylinder 24, the circumferential inner wall of the second fixed cylinder 24 is slidably connected with two second racks 26, the two second racks 26 are oppositely arranged, the two second racks 26 are meshed with the second gear 25, one end of the second rack 26 is fixedly provided with a fixed disc 23 through a bolt, a thermocouple is driven to move back and forth under the matching of the motor 19 and the electric push rod 20, the temperature measurement is carried out on the temperature test point in the environment test box, the outer wall of one side of the fixed disc 23 and the outer wall of the top of the second fixed cylinder 24 are both fixed with the mounting block 21 through bolts, the mounting hole 22 is formed in one side of the mounting block 21, and the mounting block 21 and the mounting hole 22 facilitate the installation of a thermocouple.

The working principle is as follows: when the device is used, firstly, the thermocouple is installed through the installation block 21 and the installation hole 22, the device is placed in an environment test chamber, one end of the base 1 is abutted against the inner wall of one side of the environment test chamber, then, the width of the environment test chamber is measured according to the scale strips 14, then, the knob 16 is screwed to drive the screw rod 5 to rotate, so that the sliding block 3 slides in the sliding groove 2, the pointer 15 is driven to move along the scale strips 14, the pointer 15 stops at the central point of the width of the environment test chamber, then, the fixing frame 12 is pulled outwards to drive the first rack 11 to move outwards, because the two first racks 11 are meshed with the first gear 8, therefore, the outwards sliding speeds of the two first racks 11 are the same, when the two guide wheels 13 are respectively contacted with the inner walls of two sides of the environment test chamber, at this time, the base 1 is indicated to be located at the central position of the length of the environment test chamber, then, the fixed disk 23 is pulled to enable the second rack 26 to slide outwards, so that the fixed disk 23 is in contact with the inner walls of the two sides of the environmental test chamber, then the motor 19 and the electric push rod 20 are started, the thermocouple is driven to move back and forth under the matching of the motor 19 and the electric push rod 20, and the temperature of the temperature test point in the environmental test chamber is measured.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The environment test box temperature uniformity checking and positioning device comprises a base (1) and is characterized in that a sliding groove (2) is arranged at the top of the base (1), a sliding block (3) is connected in the sliding groove (2), two supporting blocks (4) are fixedly connected at the top of the base (1), a screw rod (5) is inserted between the two supporting blocks (4), the screw rod (5) is in threaded connection with the sliding block (3), a first fixing cylinder (6) is fixedly connected at the top of the sliding block (3), a rotating shaft (7) is rotatably connected between the circumferential inner walls of the first fixing cylinder (6), a first gear (8) is fixedly connected to the outer wall of the rotating shaft (7), two sliding ways (9) are arranged on the circumferential inner wall of the first fixing cylinder (6), sliding strips (10) are connected in the sliding ways (9), a first rack (11) is fixedly connected to one side of the sliding strips (10), two first racks (11) mesh with first gear (8), one end fixedly connected with mount (12) of first rack (11), one side rotation of mount (12) is connected with guide pulley (13), one side fixedly connected with pointer (15) of slider (3), the top of base (1) is equipped with scale bar (14), and scale bar (14) are located one side of pointer (15).

2. The environmental test chamber temperature uniformity verifying and positioning device as claimed in claim 1, wherein a knob (16) is fixedly mounted at one end of the screw (5), and an anti-slip sleeve is sleeved on the outer wall of the knob (16).

3. The environmental test chamber temperature uniformity verification positioning device according to claim 1, wherein a bottom plate (17) is fixedly connected to the top of the first fixed cylinder (6), and a motor (19) is fixedly connected to one end of the bottom plate (17).

4. The environmental test chamber temperature uniformity verification positioning device according to claim 3, wherein an output shaft of the motor (19) is fixedly connected with a rotating disc (18), and one side of the rotating disc (18) is fixedly connected with an electric push rod (20).

5. The environmental test chamber temperature uniformity verification positioning device according to claim 4, wherein a second fixed cylinder (24) is fixedly connected to the top end of the electric push rod (20), and a second gear (25) is rotatably connected between the circumferential inner walls of the second fixed cylinder (24).

6. An environmental test chamber temperature uniformity verification positioning device according to claim 5, wherein two second racks (26) are slidably connected to the circumferential inner wall of the second fixed cylinder (24), the two second racks (26) are oppositely arranged, and the two second racks (26) are meshed with the second gear (25).

7. The environmental test chamber temperature uniformity verification positioning device according to claim 6, wherein a fixed disc (23) is fixedly connected to one end of the second rack (26).

8. The environmental test chamber temperature uniformity verifying and positioning device according to claim 7, wherein the outer wall of one side of the fixed disk (23) and the outer wall of the top of the second fixed cylinder (24) are both fixedly connected with an installation block (21), and one side of the installation block (21) is provided with an installation hole (22).