Air gauge calibration device

Abstract

The utility model discloses an air gauge calibration device, which belongs to the technical field of calibration devices, and comprises a box body, a control terminal mounted at the left end of the box body, a partition plate fixedly connected between the inner walls of the box body, a threaded rod rotatably connected between the box body and the partition plate, and a motor mounted at the inner bottom end of the box body, the output end of the motor is fixedly connected with the lower end of the threaded rod, the motor is electrically connected with the control terminal, and the outer end of the threaded rod is in threaded connection with a threaded moving block. The limiting and fixing mechanism adsorbs and fixes the threaded moving block to keep the threaded moving block stable, and the meshing and fixing mechanism limits and fixes the threaded rod to prevent the threaded rod from rotating easily, so that the measuring head is prevented from continuing to move under the inertia effect of the motor, errors are reduced, and the calibration accuracy is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of calibration devices, and more specifically to a pneumatic measuring instrument calibration device. Background Art

[0002] The measuring principle of pneumatic measuring instrument is comparative measurement method, which converts the length signal into airflow signal, and indicates the value through the float in the glass tube with scale, or converts the gas signal into the electric signal through the gas-to-electric converter, and indicates the light column composed of the light-emitting tube. At the same time, the pneumatic measuring instrument needs to adjust the magnification and zero position frequently during use. At the same time, after using it for a period of time, various faults will occur, which requires troubleshooting in order to restore the original function and performance, and the corresponding calibration device is needed for verification.

[0003] For example, a pneumatic measuring instrument calibration device proposed in the announcement number CN219015250U includes a placement box, a transparent door panel is installed at the front end of the placement box, and a driving motor is embedded at the bottom end of the placement box, a threaded shaft is connected to the power output end of the driving motor, and a moving block is sleeved on the outside of the threaded shaft, a clamping block is fixed on the outer wall of the moving block, and a measuring head is passed through the inside of the clamping block. The utility model places the placement box in a closed space through a transparent door panel, which can effectively prevent external factors from affecting the calibration process. The threaded shaft is driven to rotate by the driving motor, thereby pushing the moving block to slide back and forth along the threaded shaft, which is convenient for driving the clamping block to move, so that the measuring head can be adjusted in height, avoiding manual adjustment with a certain error, thereby affecting the accuracy of calibration. The bearing sleeved at the top of the threaded shaft is embedded in the top of the inner wall of the placement box through bolts, which is convenient for the threaded shaft to stably drive the moving block to slide.

[0004] The above patent has the following defects during use:

[0005] When the drive motor stops running, the rotating parts or loads in the motor still have a certain rotational inertia. The inertial force may continue to cause the motor to rotate for a period of time, causing the threaded shaft to continue to rotate, prompting the moving block to continue to move, causing errors in the height adjustment distance and affecting the accuracy of the calibration. Therefore, it is urgent to improve the technology of the calibration device to improve this equipment.

[0006] To this end, the utility model proposes a pneumatic measuring instrument calibration device. Utility Model Content

[0007] 1. Technical issues to be solved

[0008] In view of the problems existing in the prior art, the purpose of the utility model is to provide a pneumatic measuring instrument calibration device, which can realize that after the control terminal drives the measuring head to be adjusted to a preset height through a motor, the motor stops working. At the same time, the limit fixing mechanism adsorbs and fixes the threaded moving block to keep it stable, and the meshing fixing mechanism limits and fixes the threaded rod to prevent it from rotating, thereby avoiding the measuring head from continuing to move due to the inertia of the motor, reducing the generation of errors, and ensuring the accuracy of calibration.

[0009] 2. Technical solution

[0010] To solve the above problems, the utility model adopts the following technical solutions.

[0011] A pneumatic measuring instrument calibration device comprises a box body, a control terminal is installed at the left end of the box body, a partition is fixedly connected between the inner walls of the box body, and a threaded rod is rotatably connected between the box body and the partition, a motor is installed at the inner bottom end of the box body, and the output end of the motor is fixedly connected to the lower end of the threaded rod, the motor is electrically connected to the control terminal, a threaded moving block is threadedly connected to the outer end of the threaded rod, and a limited position fixing mechanism is installed between the threaded moving block and the control terminal, an engaging fixing mechanism is installed between the threaded rod and the control terminal, a clamp is installed at the front end of the threaded moving block, and a measuring head is passed through the inside of the clamp, a pressing mechanism is installed between the measuring head and the threaded moving block, a plurality of electric telescopic rods are installed at the upper end of the partition, and a micro-motion block is installed between the upper ends of the plurality of electric telescopic rods, and a conducting through-tube is embedded and installed at the left end of the box body.

[0012] Furthermore, the limiting fixing mechanism includes a pair of connecting rods fixedly connected to the rear end of the threaded moving block, the rear ends of the pair of connecting rods are each installed with an electromagnet, and the rear end of the electromagnet is fixedly connected to a slider, a pair of sliding grooves are opened on the inner wall of the rear end of the box body, and a pair of magnet sheets are fixedly connected to the inner walls of the pair of sliding grooves, the slider and the electromagnet are both located in the sliding groove, and the slider is slidably connected to the sliding groove, the outer end of the electromagnet is in contact with one end of the pair of magnet sheets that is close to each other, a displacement sensor is embedded in the interior of the slider, and the electromagnet and the displacement sensor are both electrically connected to the control terminal.

[0013] Furthermore, the surfaces of the electromagnet and the pair of magnet sheets are both provided with a high-strength wear-resistant layer.

[0014] Furthermore, the meshing and fixing mechanism includes a gear sleeved on the threaded rod, a pair of first telescopic cylinders are installed on the inner wall of the rear end of the box body, and the output ends of the pair of first telescopic cylinders are fixedly connected with an arc-shaped rack plate, and the arc-shaped rack plate is meshed with the gear, and the pair of first telescopic cylinders are electrically connected to the control terminal.

[0015] Furthermore, the clamping mechanism includes a pair of second telescopic cylinders installed on the front end of the threaded moving block, the output ends of the pair of second telescopic cylinders are fixedly connected with arc-shaped pressure plates, and the inner walls of the pair of arc-shaped pressure plates are fixedly connected with rubber anti-slip pads, and the pair of second telescopic cylinders are electrically connected to the control terminal.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] (1) In the utility model, after the control terminal drives the measuring head to adjust to a preset height through the motor, the motor stops working. At the same time, the limit fixing mechanism adsorbs and fixes the threaded moving block to keep it stable, and the meshing fixing mechanism limits and fixes the threaded rod to prevent it from rotating, thereby preventing the measuring head from continuing to move due to the inertia of the motor, reducing the generation of errors, and ensuring the accuracy of calibration.

[0019] (2) In the utility model, when the ventilation hose passes through the guide tube sleeve and is installed on the outer end of the measuring head, the ventilation hose can be squeezed and fixed by the pressing mechanism, so that the ventilation hose and the measuring head are closely connected and not easy to fall off, thereby avoiding interference during the calibration process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 For this utility model Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0022] Figure 3 It is a schematic diagram of the partial separation structure of the threaded rod, the threaded moving block and the motor in the utility model;

[0023] Figure 4 It is a schematic diagram of the top view of the limit fixing mechanism and the meshing fixing mechanism in the utility model;

[0024] Figure 5 For this utility model Figure 4 Schematic diagram of the local enlarged structure at point B in the middle.

[0025] Description of the numbers in the figure:

[0026] 1. Box; 2. Control terminal; 3. Partition; 4. Threaded rod; 5. Threaded moving block; 6. Limit fixing mechanism; 601. Connecting rod; 602. Slide groove; 603. Sliding block; 604. Electromagnet; 605. Magnet sheet; 606. Displacement sensor; 7. Engaging fixing mechanism; 701. Gear; 702. Arc rack plate; 703. First telescopic cylinder; 8. Clamp; 9. Measuring head; 10. Pressing mechanism; 1001. Second telescopic cylinder; 1002. Arc pressure plate; 1003. Rubber anti-skid pad; 11. Electric telescopic rod; 12. Micro-motion block; 13. Conductive tube; 14. Motor. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0028] Example:

[0029] See also Figure 1-5 A pneumatic measuring instrument calibration device comprises a box body 1, a control terminal 2 is installed at the left end of the box body 1, a partition 3 is fixedly connected between the inner walls of the box body 1, and a threaded rod 4 is rotatably connected between the box body 1 and the partition 3, a motor 14 is installed at the inner bottom end of the box body 1, and the output end of the motor 14 is fixedly connected to the lower end of the threaded rod 4, the motor 14 is electrically connected to the control terminal 2, a threaded moving block 5 is threadedly connected to the outer end of the threaded rod 4, and a limited position fixing mechanism 6 is installed between the threaded moving block 5 and the control terminal 2, an engaging fixing mechanism 7 is installed between the threaded rod 4 and the control terminal 2, a clamp 8 is installed at the front end of the threaded moving block 5, and a measuring head 9 is passed through the inside of the clamp 8, a pressing mechanism 10 is installed between the measuring head 9 and the threaded moving block 5, a plurality of electric telescopic rods 11 are installed at the upper end of the partition 3, and a micro-motion block 12 is installed between the upper ends of the plurality of electric telescopic rods 11, and a conducting through-tube 13 is embedded and installed at the left end of the box body 1.

[0030] During use of the present solution, first, the measuring head 9 is clamped and fixed by the clamp 8. The clamp 8 is an existing device, and the outer end of the measuring head 9 can be sleeved with a ventilation hose that passes through the conductive through-tube 13. Under the drive of the control terminal 2, a pair of second telescopic cylinders 1001 push a pair of arc-shaped pressure plates 1002 and rubber anti-skid pads 1003 to move toward each other, squeeze and fix them, so that the ventilation hose and the measuring head 9 are tightly connected and not easy to fall off, thereby ensuring its air tightness. In addition, during the precise process, when the height of the measuring head 9 needs to be adjusted, the control terminal 2 presets its height displacement data and feeds it back to the displacement sensor 606 in the limit fixing mechanism 6. The model of the displacement sensor 606 is TX703600, which can monitor and record the displacement distance of the measuring head 9 and the threaded moving block 5 in real time. Then, under the rotation of the motor 14, the threaded rod 4 is driven to rotate, so that the threaded moving block 5 moves under the rotation of the threaded rod 4, driving the measuring head 9 to adjust its height. At the same time, a pair of sliders 603 and an electromagnet 604 are connected. Under the connection of the connecting rod 601, it moves synchronously with the threaded moving block 5 along the slide groove 602, and the displacement sensor 606 also moves with the slider 603, and records the displacement data in real time during the movement. When the displacement data reaches the preset height displacement data, it is immediately fed back to the control terminal 2, so that the control motor 14 stops working. At the same time, the electromagnet 604 is energized to generate magnetism, and is tightly adsorbed with a pair of magnet sheets 605 on both sides, so that the slider 603 stops sliding, and drives the threaded moving block 5 and the measuring head 9 to stop moving. The pair of first telescopic cylinders 703 in the meshing and fixing mechanism 7 also work synchronously, squeezing a pair of arc-shaped rack plates 702 to mesh with the gear 701 on the threaded rod 4, and performing limit fixing to keep the threaded rod 4 fixed and not easy to rotate, thereby avoiding the measurement head 9 from continuing to move under the inertia of the motor 14, reducing the generation of errors, and ensuring the accuracy of calibration. In addition, the multiple electric telescopic rods 11 drive the micro-motion block 12 to move in a small amplitude to achieve height adjustment, so as to facilitate the subsequent calibration accuracy.

[0031] See also Figure 4-5 The limiting fixing mechanism 6 includes a pair of connecting rods 601 fixedly connected to the rear end of the threaded moving block 5, the rear ends of the pair of connecting rods 601 are both installed with electromagnets 604, and the rear ends of the electromagnets 604 are fixedly connected with a slider 603, a pair of slide grooves 602 are cut on the inner wall of the rear end of the box body 1, and the inner walls of the pair of slide grooves 602 are both fixedly connected with a pair of magnet sheets 605, the slider 603 and the electromagnet 604 are both located in the slide groove 602, and the slider 603 is slidably connected to the slide groove 602, the outer end of the electromagnet 604 is in contact with one end of the pair of magnet sheets 605 that is close to each other, a displacement sensor 606 is embedded in the slider 603, and the electromagnet 604 and the displacement sensor 606 are both electrically connected to the control terminal 2.

[0032] During use of the present solution, when the threaded moving block 5 and the measuring head 9 move, a pair of connecting rods 601 also move synchronously, driving a pair of sliders 603 and an electromagnet 604 to move synchronously with the threaded moving block 5 in the slide groove 602, and the displacement sensor 606 also moves with the slider 603, and records the displacement data in real time during the movement. When the displacement data reaches the preset height displacement data, it is immediately fed back to the control terminal 2, so that the control motor 14 stops working. At the same time, the electromagnet 604 is energized to generate magnetism, and is tightly adsorbed with a pair of magnet sheets 605 on both sides, so that the slider 603 stops sliding, and drives the threaded moving block 5 and the measuring head 9 to stop moving, so as to avoid the threaded moving block 5 from continuing to move downward for a short distance as the threaded rod 4 continues to rotate due to the inertia of the motor 14, thereby ensuring the stability and position accuracy of the threaded moving block 5, and not easily causing deviations during the height adjustment process, thereby ensuring precision.

[0033] See also Figure 5 The surfaces of the electromagnet 604 and the pair of magnet pieces 605 are both provided with a high-strength wear-resistant layer.

[0034] During use, the present invention enhances the wear resistance of the surface of the electromagnet 604 and the pair of magnet sheets 605 by providing a high-strength wear-resistant layer, making it less likely for the electromagnet 604 and the pair of magnet sheets 605 to be damaged during long-term contact and friction, thereby extending their service life.

[0035] See also Figure 4 The meshing and fixing mechanism 7 includes a gear 701 sleeved on the threaded rod 4, a pair of first telescopic cylinders 703 are installed on the inner wall of the rear end of the box body 1, and the output ends of the pair of first telescopic cylinders 703 are fixedly connected with an arc-shaped rack plate 702, and the arc-shaped rack plate 702 is meshed with the gear 701, and the pair of first telescopic cylinders 703 are electrically connected to the control terminal 2.

[0036] During use of this solution, when the control terminal 2 controls the motor 14 to stop working, a pair of first telescopic cylinders 703 immediately start working, driving a pair of arc-shaped rack plates 702 to move toward each other, and meshing with the gear 701 on the threaded rod 4 to perform limit fixing, so that the threaded rod 4 remains fixed and is not easily continued to rotate due to the inertia of the motor 14, thereby reducing the generation of errors and ensuring calibration accuracy.

[0037] See also Figure 1-2 The clamping mechanism 10 includes a pair of second telescopic cylinders 1001 installed on the front end of the threaded moving block 5, the output ends of the pair of second telescopic cylinders 1001 are fixedly connected with an arc-shaped pressure plate 1002, and the inner walls of the pair of arc-shaped pressure plates 1002 are fixedly connected with a rubber anti-slip pad 1003, and the pair of second telescopic cylinders 1001 are electrically connected to the control terminal 2.

[0038] During use of the present solution, after the ventilation hose that has passed through the conductive through-tube 13 is sleeved on the outer end of the measuring head 9, a pair of second telescopic cylinders 1001 push a pair of arc-shaped pressure plates 1002 and rubber anti-skid pads 1003 to move toward each other until the pair of rubber anti-skid pads 1003 come into contact with the ventilation hose, thereby squeezing and fixing it, so that the ventilation hose and the measuring head 9 maintain a tight connection and are not prone to falling off, thereby ensuring their air tightness and avoiding interference during the calibration process.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic measuring instrument calibration device, comprising a box (1), characterized in that: A control terminal (2) is installed at the left end of the box (1), a partition (3) is fixedly connected between the inner walls of the box (1), and a threaded rod (4) is rotatably connected between the box (1) and the partition (3), a motor (14) is installed at the inner bottom end of the box (1), and the output end of the motor (14) is fixedly connected to the lower end of the threaded rod (4), the motor (14) is electrically connected to the control terminal (2), the outer end of the threaded rod (4) is threadedly connected to a threaded moving block (5), and a limited position fixed member is installed between the threaded moving block (5) and the control terminal (2). The invention relates to a mechanism (6), an engaging fixing mechanism (7) is installed between the threaded rod (4) and the control terminal (2), a clamp (8) is installed at the front end of the threaded moving block (5), and a measuring head (9) is inserted into the inside of the clamp (8), a pressing mechanism (10) is installed between the measuring head (9) and the threaded moving block (5), a plurality of electric telescopic rods (11) are installed at the upper end of the partition (3), and a micro-motion block (12) is installed between the upper ends of the plurality of electric telescopic rods (11), and a conducting through-tube (13) is embedded and installed at the left end of the box body (1).

2. A pneumatic measuring instrument calibration device according to claim 1, characterized in that: The position limiting fixing mechanism (6) comprises a pair of connecting rods (601) fixedly connected to the rear end of the threaded moving block (5), the rear ends of the pair of connecting rods (601) are both equipped with electromagnets (604), and the rear ends of the electromagnets (604) are fixedly connected to a slider (603), the rear end inner wall of the box body (1) is formed with a pair of slide grooves (602), and the inner walls of the pair of slide grooves (602) are both fixedly connected to a pair of magnet sheets (605), the slider (603) and the electromagnet (604) are both located in the slide grooves (602), and the slider (603) is slidably connected to the slide grooves (602), the outer end of the electromagnet (604) is in contact with the end of the pair of magnet sheets (605) that is close to each other, and a displacement sensor (606) is embedded and installed inside the slider (603), and the electromagnet (604) and the displacement sensor (606) are both electrically connected to the control terminal (2).

3. A pneumatic measuring instrument calibration device according to claim 2, characterized in that: The surfaces of the electromagnet (604) and the pair of magnet sheets (605) are both provided with a high-strength wear-resistant layer.

4. A pneumatic measuring instrument calibration device according to claim 1, characterized in that: The meshing and fixing mechanism (7) comprises a gear (701) sleeved on the threaded rod (4); a pair of first telescopic cylinders (703) are installed on the inner wall of the rear end of the box body (1); the output ends of the pair of first telescopic cylinders (703) are fixedly connected to an arc-shaped rack plate (702), and the arc-shaped rack plate (702) is meshed with the gear (701); and the pair of first telescopic cylinders (703) are electrically connected to the control terminal (2).

5. A pneumatic measuring instrument calibration device according to claim 1, characterized in that: The clamping mechanism (10) comprises a pair of second telescopic cylinders (1001) mounted on the front end of the threaded moving block (5); the output ends of the pair of second telescopic cylinders (1001) are fixedly connected to arc-shaped pressure plates (1002); the inner walls of the pair of arc-shaped pressure plates (1002) are fixedly connected to rubber anti-slip pads (1003); and the pair of second telescopic cylinders (1001) are electrically connected to the control terminal (2).

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