Pressure sensor calibration drawing instrument with portable positioning structure

Abstract

The pressure sensor calibration drawing instrument with the portable positioning structure comprises a frame body, a lifting mechanism, a detection mechanism and a pressing mechanism, the lifting mechanism is installed on the frame body, the lifting mechanism penetrates through the top of the frame body, and the lifting mechanism is movably connected with the frame body; a detection mechanism is arranged at the bottom end of the lifting mechanism; the output end of the detection mechanism is connected with a pressing mechanism; the pressing mechanism comprises a pressing frame and an adjustable positioning structure, the pressing frame is connected to the bottom of the detection mechanism, and a dynamometer to be detected is mounted at the bottom of the pressing frame. The pressure sensor calibration drawing instrument with the portable positioning structure ensures that the sensor is aligned with the center rod of the dynamometer, so that the measurement accuracy is improved, the positioning ring is prevented from accidentally falling off from the U-shaped hole due to the design of the anti-falling block and the anti-falling groove, and the stability and the safety of equipment are enhanced.

Description

Technical Field

[0001] The utility model relates to a drawing instrument, in particular to a pressure sensor calibration drawing instrument with a portable positioning structure. Background Art

[0002] In industrial automation and intelligent manufacturing, accurate pressure measurement and calibration are key factors in ensuring product quality and system reliability. As key components for monitoring and controlling pressure, pressure sensors are widely used in various industrial process control, environmental monitoring, medical equipment, and scientific research experiments. With the development of technology, the requirements for the accuracy and stability of pressure sensors are becoming increasingly stringent, resulting in a growing need for accurate calibration of these sensors.

[0003] like Figure 1 As shown, the force gauge to be tested includes: a first pressure sensor, a center rod, and a support spring. Because elastic support is required in some industrial production processes, a support spring is mounted on the first pressure sensor. The center rod passes through the support spring, guiding the movement of the component to be measured. Because some industrial production processes require the component to be tested to move, the first pressure sensor obtains downward force from the component to be tested via the support spring. During quality inspection, the force gauge described above needs to be tested.

[0004] A Chinese patent discloses a rivet pulling device for thermal insulation layer detection with application number: CN202323402480.8. The rivet pulling device for thermal insulation layer detection includes a rivet pulling device, a data display device is installed on the top end face of the rivet pulling device, and a plurality of fixing seats are fixedly connected to the bottom end face of the rivet pulling device. An adjustment component is provided on the fixing seat. Although this device can complete the pulling of rivets, it cannot calibrate the above-mentioned force measuring device to be detected. Utility Model Content

[0005] The utility model aims to provide a pressure sensor calibration pulling instrument with a portable positioning structure, which solves the problem in the prior art that the force measuring device to be tested cannot be calibrated.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: The present invention provides a pressure sensor calibration and pulling instrument with a portable positioning structure, comprising: a frame, a lifting mechanism, a detection mechanism and a pressing mechanism.

[0007] The frame is equipped with a lifting mechanism, which passes through the top of the frame and is movably connected to the frame;

[0008] A detection mechanism is provided at the bottom end of the lifting mechanism, and the output end of the detection mechanism is connected to the pressing mechanism;

[0009] The pressing mechanism includes: a pressing frame and an adjustable positioning structure, the pressing frame is connected to the bottom of the detection mechanism, and the force measuring device to be detected is installed at the bottom of the pressing frame;

[0010] The adjustable positioning structure includes: an upper positioning ring and a lower positioning ring. The lower pressure frame is detachably connected to the upper positioning ring. The upper positioning ring is installed with a lower positioning ring that can be adjusted to rise and fall. The lower positioning ring is used to be sleeved on the outside of the center rod of the dynamometer to be tested located below the lower pressure frame after adjustment. The bottom surface of the lower positioning ring is used to press down the support spring in the dynamometer to be tested.

[0011] Preferably, the lower end of the upper positioning ring is threadedly connected to the lower positioning ring, and the upper positioning ring and the lower positioning ring can be snapped into the lower pressing frame.

[0012] Preferably, a bottom plate is provided at the bottom of the lower pressing frame, and a U-shaped hole is provided on the bottom plate and the bottom of the lower pressing frame, and an anti-slip block is provided on the inner wall of the arc section of the U-shaped hole on the bottom plate, and the anti-slip block and the inner wall of the U-shaped hole on the bottom plate form an anti-slip groove, and the anti-slip groove is for the lower positioning ring to be inserted, and the anti-slip block is used to prevent the lower positioning ring and the upper positioning ring from detaching from the U-shaped hole.

[0013] Preferably, a hook ring is provided on the top of the lower positioning ring, and the hook ring can be stuck in the anti-slip groove.

[0014] Preferably, a limiting plate is installed on the inner wall of the bottom surface of the lower pressure frame, the limiting plate is a U-shaped structure, a first fixing ring and a second fixing ring are provided on the top of the upper positioning ring, the second fixing ring is located below the first fixing ring, and a slot for the limiting plate to be inserted is formed between the first fixing ring and the second fixing ring.

[0015] Preferably, the limiting plate and the pressing frame are fixed by bolts.

[0016] Preferably, the lifting mechanism includes: a rotating head, a rotating handle and a connecting rod. The rotating head is threadedly connected to the frame. A rotating handle is provided on each side of the rotating head. The bottom of the rotating head is connected to the connecting rod, and the bottom of the connecting rod is connected to the detection mechanism.

[0017] Preferably, the detection mechanism is a second pressure sensor, the top surface of the second pressure sensor is fixed to the connecting rod via a nut, and the bottom of the second pressure sensor is connected to the top surface of the lower pressing frame.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the pressure sensor calibration pulling instrument with a portable positioning structure adopts a lifting mechanism on the frame, and a second pressure sensor is installed under the lifting mechanism. The second pressure sensor can be pressure-calibrated with the first pressure sensor of the dynamometer to be tested through the pressing mechanism. The lower pressing frame in the pressing mechanism is provided with a limit plate, an upper positioning ring and a lower positioning ring. The upper positioning ring and the lower positioning ring extend into the lower pressing frame through the U-shaped hole of the lower pressing frame. The limit plate is inserted into the limit groove of the upper positioning ring, and the anti-slip block on the bottom plate is inserted into the hook ring of the lower positioning ring to prevent the upper positioning ring and the lower positioning ring from detaching from the U-shaped hole. This design ensures that the sensor is aligned with the center rod of the dynamometer, thereby improving the measurement accuracy. The design of the anti-slip block and the anti-slip groove prevents the positioning ring from accidentally falling off from the U-shaped hole, thereby enhancing the stability and safety of the equipment. The hook ring is embedded in the anti-slip groove to further ensure the stability of the lower positioning ring. The lower positioning ring is sleeved on the center rod of the dynamometer to be tested, so that the center line of the dynamometer to be tested is in a straight line with the center line of the lifting mechanism. When the dynamometer to be tested is tested, the lifting mechanism drives the detection mechanism and the lower pressure frame to press down, so that the downward pressure center line is in a straight line with the center line of the support spring in the dynamometer to be tested. The lower pressure ring presses down the support spring steadily to avoid the downward pressure at the side of the spring, so that the support spring is pressed down from the side, and some parts of the support spring are not pressed down, so as to avoid the downward pressure offset affecting the detection result of the detection mechanism and the measurement result of the dynamometer to be tested from deviating from the original corresponding relationship, avoiding errors in the calibration of the dynamometer to be tested, and ensuring the calibration accuracy.

[0019] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of a puller for calibrating a pressure sensor with a portable positioning structure.

[0021] Figure 2 Partial schematic diagram of a puller for calibrating a pressure sensor with a portable positioning structure.

[0022] Figure markings: frame 1, lifting mechanism 2, rotating head 21, rotating handle 22, connecting rod 23, detection mechanism 3, second pressure sensor 31, pressing mechanism 4, pressing frame 41, U-shaped hole 411, bottom plate 412, anti-slip block 413, anti-slip groove 414, adjustable positioning structure 42, upper positioning ring 421, first fixing ring 4211, second fixing ring 4212, card slot 4213, lower positioning ring 422, hook ring 4221, limit plate 5, bolt 51, dynamometer to be detected 6, first pressure sensor 61, center rod 62, support spring 63. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and functions of the present invention clearer and easier to understand, the present invention is further described below with reference to the accompanying drawings and specific embodiments:

[0024] like Figures 1 to 2 As shown, the utility model proposes a pressure sensor calibration puller with a portable positioning structure, comprising: a frame 1, a lifting mechanism 2, a detection mechanism 3 and a pressing mechanism 4. The frame 1 is equipped with a lifting mechanism 2, the lifting mechanism 2 passes through the top of the frame 1, and the lifting mechanism 2 is movably connected to the frame 1; the bottom end of the lifting mechanism 2 is provided with a detection mechanism 3, the output end of the detection mechanism 3 is connected to the pressing mechanism 4; the pressing mechanism 4 includes: a pressing frame 41 and an adjustable positioning structure 42, the pressing frame 41 is connected to the detection mechanism 42, and the detection mechanism 3 is connected to the pressing mechanism 4. At the bottom of the measuring mechanism 3, the dynamometer 6 to be tested is installed at the bottom of the lower pressure frame 41; the adjustable positioning structure 42 includes: an upper positioning ring 421 and a lower positioning ring 422, the lower pressure frame 41 is detachably connected to the upper positioning ring 421, and the upper positioning ring 421 is installed with a lower positioning ring 422 that can be adjusted to rise and fall, and the lower positioning ring 422 is used to be sleeved on the outside of the center rod 62 of the dynamometer 6 to be tested located below the lower pressure frame 41 after adjustment, and the bottom surface of the lower positioning ring 422 is used to press down the support spring 63 in the dynamometer 6 to be tested. During use, the upper positioning ring 421 and the lower positioning ring 422 are inserted into the U-shaped hole 411. By adjusting the lifting mechanism 2, the detection mechanism 3 and the pressing mechanism 4 are driven to move downward. The lower positioning ring 422 squeezes the supporting spring 63 in the dynamometer 6 to be detected. After being squeezed, the supporting spring 63 generates downward pressure on the first pressure sensor 61. The first pressure sensor 61 can detect the pressure and display it. At the same time, the supporting spring 63 generates pressure on the pressing mechanism 4. The detection mechanism 3 detects the pressure and uses the pressure detected by the detection mechanism 3 to calibrate the first pressure sensor 61.

[0025] The lower end of the upper positioning ring 421 is threadedly connected to the lower positioning ring 422, and the upper positioning ring 421 and the lower positioning ring 422 can be snapped into the lower pressing frame 41. Through the threaded connection, the relative position between the upper positioning ring 421 and the lower positioning ring 422 can be accurately adjusted to ensure that the lower positioning ring 422 can be accurately sleeved on the center rod 62 of the force measuring device 6 to be tested.

[0026] The bottom of the lower pressing frame 41 is equipped with a bottom plate 412. A U-shaped hole 411 is formed on the bottom plate 412 and the bottom of the lower pressing frame 41. An anti-slip block 413 is provided on the inner wall of the arc section of the U-shaped hole 411 on the bottom plate 412. The anti-slip block 413 and the inner wall of the U-shaped hole 411 on the bottom plate 412 form an anti-slip groove 414. The anti-slip groove 414 is for the lower positioning ring 422 to be snapped into. The anti-slip block 413 is used to prevent the lower positioning ring 422 and the upper positioning ring 421 from detaching from the U-shaped hole 411. When the upper positioning ring 421 and the lower positioning ring 422 extend into the U-shaped hole 411, the lower positioning ring 422 is rotated and moved downward, so that the lower positioning ring 422 is snapped into the anti-slip groove 414, thereby preventing the upper positioning ring 421 and the lower positioning ring 422 from detaching from the U-shaped hole 411.

[0027] A hook ring 4221 is provided on the top of the lower positioning ring 422, and the hook ring 4221 can be snapped into the anti-slip groove 414. The lower positioning ring 422 is snapped into the anti-slip groove 414 by the hook ring 4221, so that the lower positioning ring 422 and the lower pressing frame 41 are relatively fixed.

[0028] A limit plate 5 is mounted on the inner wall of the bottom surface of the lower pressing frame 41. The limit plate 5 is a U-shaped structure. A first fixing ring 4211 and a second fixing ring 4212 are mounted on the top of the upper positioning ring 421. The second fixing ring 4212 is located below the first fixing ring 4211. A slot 4213 is formed between the first fixing ring 4211 and the second fixing ring 4212 for the limit plate 5 to engage. When the lower pressing frame 41 moves downward and causes the lower positioning ring 422 to squeeze the support spring 63 of the force measuring device 6 to be tested, the support spring 63 exerts a counter-pressure on the lower positioning ring 422, causing the lower positioning ring 422 and the upper positioning ring 421 to move upward relative to the lower pressing frame 41. When the limit plate 5 engages with the slot 4213 of the upper positioning ring 421 and causes the lower positioning ring 422 to squeeze the support spring 63, the upper positioning ring 421 and the lower positioning ring 422 can be fixed relative to the lower pressing frame 41.

[0029] The limiting plate 5 and the pressing frame 41 are fixed together by bolts 51 .

[0030] The lifting mechanism 2 includes a rotating head 21, a rotating handle 22, and a connecting rod 23. The rotating head 21 is threadedly connected to the frame. A rotating handle 22 is provided on each side of the rotating head 21. The bottom of the rotating head 21 is connected to the connecting rod 23, and the bottom of the connecting rod 23 is connected to the detection mechanism 3. When in use, the rotating head 21 is rotated by manually holding the rotating handle 22, causing the rotating head 21 to move downward relative to the frame 1.

[0031] The detection mechanism 3 comprises a second pressure sensor 31. The top surface of the second pressure sensor 31 is fixed to the connecting rod 23 via a nut, and the bottom of the second pressure sensor 31 is connected to the top surface of the lower pressing frame 41. When the lower positioning ring 422 compresses the support spring 63 of the force measuring device 6 to be tested, the support spring 63 exerts a counterpressure on the lower positioning ring 422. The second pressure sensor 31 detects this counterpressure and uses this pressure value to calibrate the first pressure sensor 61.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. Pressure sensor calibration puller with portable positioning structure, characterized in that: include: Frame (1), lifting mechanism (2), detection mechanism (3) and pressing mechanism (4), A lifting mechanism (2) is installed on the frame (1), the lifting mechanism (2) passes through the top of the frame (1), and the lifting mechanism (2) is movably connected to the frame (1); A detection mechanism (3) is provided at the bottom end of the lifting mechanism (2), and an output end of the detection mechanism (3) is connected to a pressing mechanism (4); The pressing mechanism (4) comprises: a pressing frame (41) and an adjustable positioning structure (42); the pressing frame (41) is connected to the bottom of the detection mechanism (3); and a force measuring device (6) to be detected is installed at the bottom of the pressing frame (41); The adjustable positioning structure (42) comprises an upper positioning ring (421) and a lower positioning ring (422). The lower pressing frame (41) is detachably connected to the upper positioning ring (421). The upper positioning ring (421) is provided with a lower positioning ring (422) which can be adjusted to rise and fall. The lower positioning ring (422) is used to be sleeved on the outside of the center rod (62) of the dynamometer (6) to be detected and located below the lower pressing frame (41) after adjustment. The bottom surface of the lower positioning ring (422) is used to press down the support spring (63) in the dynamometer (6) to be detected.

2. The pressure sensor calibration pulling instrument with a portable positioning structure according to claim 1, characterized in that: The lower end of the upper positioning ring (421) is threadedly connected to the lower positioning ring (422), and the upper positioning ring (421) and the lower positioning ring (422) can be snapped into the lower pressing frame (41).

3. The pressure sensor calibration pulling instrument with a portable positioning structure according to claim 2, characterized in that: A bottom plate (412) is provided at the bottom of the lower pressing frame (41), and a U-shaped hole (411) is provided on the bottom plate (412) and the bottom of the lower pressing frame (41). An anti-slip block (413) is provided on the inner wall of the arc section of the U-shaped hole (411) on the bottom plate (412). The anti-slip block (413) and the inner wall of the U-shaped hole (411) on the bottom plate (412) form an anti-slip groove (414). The anti-slip groove (414) is for the lower positioning ring (422) to be clamped in. The anti-slip block (413) is used to prevent the lower positioning ring (422) and the upper positioning ring (421) from detaching from the U-shaped hole (411).

4. The pressure sensor calibration pulling instrument with a portable positioning structure according to claim 3, characterized in that: A hook ring (4221) is provided on the top of the lower positioning ring (422), and the hook ring (4221) can be inserted into the anti-slip groove (414).

5. The pressure sensor calibration pulling instrument with a portable positioning structure according to claim 4, characterized in that: A limiting plate (5) is mounted on the inner wall of the bottom surface of the lower pressing frame (41). The limiting plate (5) is a U-shaped structure. A first fixing ring (4211) and a second fixing ring (4212) are mounted on the top of the upper positioning ring (421). The second fixing ring (4212) is located below the first fixing ring (4211). A slot (4213) for the limiting plate (5) to be inserted is formed between the first fixing ring (4211) and the second fixing ring (4212).

6. The pressure sensor calibration pulling instrument with a portable positioning structure according to claim 5, characterized in that: The limiting plate (5) and the lower pressing frame (41) are fixed by bolts (51).

7. The pressure sensor calibration pulling instrument with a portable positioning structure according to claim 6, characterized in that: The lifting mechanism (2) comprises a rotating head (21), a rotating handle (22) and a connecting rod (23). The rotating head (21) is threadedly connected to the frame. A rotating handle (22) is provided on each side of the rotating head (21). The bottom of the rotating head (21) is connected to the connecting rod (23), and the bottom of the connecting rod (23) is connected to the detection mechanism (3).

8. The pressure sensor calibration pulling instrument with a portable positioning structure according to claim 7, characterized in that: The detection mechanism (3) is a second pressure sensor (31), the top surface of the second pressure sensor (31) is fixed to the connecting rod (23) via a nut, and the bottom of the second pressure sensor (31) is connected to the top surface of the lower pressing frame (41).

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