External mechanical calibration device for hardness of blasting bead
By introducing an external bead-burning hardness mechanical calibration device into the bead-burning instrument, using a cantilever urging mechanism and high-precision calibration mechanical sensor, the problem of greater force calibration difficulties caused by volume problems in traditional methods is solved, and the 0- The flexibility and accuracy of the accurate calibration of force between 100N and the blast bead test.
Patent Information
- Application Number
- CN202420387223.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-02-28
AI Technical Summary
The existing technology is difficult to calibrate the mechanical sensors of bead burst instruments with greater force. This is mainly because the traditional weight weighing method requires larger weights when calibrating with greater force, resulting in too large volume and cannot be inside small bead burst instruments. place.
It adopts an external blasting bead hardness mechanical calibration device, including a calibration mechanical sensor, cantilever pressing mechanism and mounting frame. The cantilever urge mechanism is used to probe into the inside of the instrument from the outside, and vertical pressure is applied to the calibration mechanics sensor, and the high-precision calibration mechanics sensor is installed coaxially with the measured sensor to achieve calibration of the mechanics sensor.
Arbitrary calibration of forces between 0-100N is achieved, which solves the calibration difficulties caused by volume problems in traditional methods, and improves the accuracy and flexibility of the blast bead test.
Smart Images
Figure CN222461249U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tobacco appliance standardization, in particular to an external bursting bead hardness mechanical calibration device. Background Art
[0002] When the blasting beads are undergoing performance testing, corresponding tests are performed using a blasting bead instrument, wherein the hardness index of the blasting beads is determined by applying a downward force to the blasting beads to break them, and then reading the force value to determine whether the hardness index of the blasting beads is appropriate.
[0003] The force applied by the bead blasting tester ranges from 0 to 100N. Accurate control of the force is very important. Therefore, the mechanical sensor of the bead blasting tester needs to be calibrated to improve the accuracy of the bead blasting test.
[0004] The traditional calibration method is the weight weighing method, which is to place a weight on the top of the sensor and record the difference between the degree of the mechanical sensor of the bead blasting device and the weight value to achieve calibration.
[0005] However, since the force of the bursting bead calibration is between 0-100N, a smaller force calibration can be completed with a smaller volume of weights. When calibrating a larger force, such as 50N, a weight of nearly 5KG is required, which is too large. The bursting bead is small in size, so the sensor table inside the instrument for placing the bursting bead is also designed to be small, and it is impossible to place a weight that is too large on the sensor table inside the instrument. As a result, this method cannot be used for larger force calibration work.
[0006] In order to solve the problem of how to calibrate the bead blasting instrument with a larger force, people have been looking for an ideal technical solution. Summary of the invention
[0007] The purpose of the utility model is to address the deficiencies of the prior art and to provide an external bead blasting hardness mechanical calibration device that uses an additional high-precision mechanical sensor to perform calibration through interaction force, uses a cantilever mechanism to solve the problem of small internal space of the bead blasting instrument, and ultimately solves the problem that the bead blasting instrument is difficult to calibrate the mechanical sensor due to volume problems.
[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an external explosive bead hardness mechanical calibration device, including a calibration mechanical sensor, a cantilever force application mechanism and a mounting frame;
[0009] The mounting frame includes a base and a stand, the cantilever force-applying mechanism is installed on the stand, the cantilever in the cantilever force-applying mechanism extends horizontally forward from the stand, the cantilever force-applying mechanism is used to drive the cantilever to move in the vertical direction, a force-applying contact is installed at the far end of the cantilever, the calibration mechanical sensor is a sensor that allows vertical installation and vertical force, and the force-applying contact matches the top force-bearing surface of the calibration mechanical sensor.
[0010] Based on the above, the cantilever force-applying mechanism includes a vertical driving mechanism, a cantilever mechanism, a force-applying guiding mechanism and a balancing mechanism;
[0011] The cantilever mechanism includes the cantilever, a cantilever slider and a cantilever track. The cantilever track is vertically arranged and installed on the stand. The cantilever is installed in the cantilever track through the cantilever slider. The moving end of the vertical driving mechanism acts on the top surface of the cantilever.
[0012] Based on the above, the force guiding mechanism includes a first crank arm installed on the stand, a vertical guide hole is arranged at the end of the first crank arm, and the end structure of the movable end of the vertical driving mechanism is a force column matching the guide hole, and the force column passes through the guide hole and acts on the top surface of the cantilever.
[0013] Based on the above, the force application point of the force application column is located within a third of the cantilever near the end.
[0014] Based on the above, the force-applying column is provided with a spring in the area above the guide hole.
[0015] Based on the above, the balancing mechanism includes a second crank arm installed on the stand, and a vertically arranged elastic support member is installed at the end of the second crank arm. The elastic support member is supported on the bottom surface of the cantilever, and the supporting point of the elastic support member is close to the midpoint of the cantilever. The elastic support member is a gas spring or a hydraulic spring.
[0016] Based on the above, the vertical driving mechanism includes a screw mechanism installed on the stand, the moving end of the screw mechanism is a slider, and the force column is fixed to one side of the slider through a connecting piece.
[0017] Based on the above, the installation heights of the first crank arm and the second crank arm are adjustable.
[0018] Based on the above, a triangular wedge head is installed at the front portion of the upper end of the base.
[0019] Based on the above, a counterweight block is installed at the rear portion of the upper end of the base.
[0020] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the utility model has the following advantages:
[0021] 1. In order to solve the problem that the module used to measure the hardness of the bursting bead instrument is small in size, another high-precision calibration mechanical sensor is installed vertically coaxially with the measured bursting bead sensor, and then a cantilever force-applying mechanism with a cantilever is used to penetrate into the instrument from the outside to apply vertical pressure to the calibration mechanical sensor to solve the space problem. By comparing the values of the two sensors, the calibration of the bursting bead mechanical sensor can be achieved.
[0022] 2. In order to solve the problem of force stability of the cantilever force-applying mechanism, a force-applying guide mechanism is added to guide the direction of travel of the force-applying column; and then a spring is used to provide a balancing force for the stability of the force.
[0023] 3. A balancing mechanism is provided to elastically support the bottom end of the cantilever near the middle position to prevent the cantilever from being unstable due to reasons such as being too long or applying force inward.
[0024] 4. The vertical drive mechanism adopts a screw mechanism. The advantages of the screw mechanism are high precision and good controllability. It can be manually adjusted without the help of external power, and the experiment is more flexible.
[0025] 5. To ensure the stability of the entire bracket, install a triangular wedge at the front end of the base, insert it into the bottom of the bead blasting instrument, and install a counterweight at the rear end of the base to ensure the stability of the entire bracket. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the use state of the external blasting bead hardness mechanical calibration device in the utility model.
[0027] Figure 2 It is a cross-sectional view of the use state of the external blasting bead hardness mechanical calibration device in the utility model.
[0028] Figure 3 This is one of the detailed views of the use status of the external blasting bead hardness mechanical calibration device in the utility model.
[0029] Figure 4 This is the second detailed view of the use status of the external blasting bead hardness mechanical calibration device in the utility model.
[0030] Figure 5 This is the third detailed diagram of the use status of the external blasting bead hardness mechanical calibration device in the utility model.
[0031] In the figure: 1. Calibration mechanical sensor; 2. Base; 3. Stand; 4. Cantilever; 5. Force contact; 6. Sensor under test; 7. First crank arm; 8. Screw mechanism; 9. Second crank arm; 10. Gas spring; 11. Bead blasting instrument; 21. Triangular wedge block; 22. Counterweight block; 41. Cantilever slider; 42. Cantilever track; 81. Slider; 82. Force column; 83. Connector; 84. Knob; 85. Spring. DETAILED DESCRIPTION
[0032] The technical solution of the utility model is further described in detail below through specific implementation methods.
[0033] like Figure 1-Figure 5 As shown, with the bead blasting mechanical sensor as the sensor to be tested and the bead blasting instrument as the matching object, a specific implementation method is developed.
[0034] An external blasting bead hardness mechanical calibration device comprises a calibration mechanical sensor 1, a cantilever force application mechanism and a mounting frame;
[0035] The mounting frame includes a base 2 and a stand 3, the cantilever force-applying mechanism is installed on the stand 3, the cantilever 4 in the cantilever force-applying mechanism extends horizontally forward from the stand 3, the cantilever force-applying mechanism is used to drive the cantilever 4 to move in the vertical direction, a force-applying contact 5 is installed at the far end of the cantilever 4, the calibration mechanical sensor 1 is a sensor that allows vertical installation and vertical force, it is installed on the sensor 6 to be tested, the two are coaxially installed, and the force-applying contact 5 matches the top force-bearing surface of the calibration mechanical sensor 1.
[0036] Specifically, the cantilever force applying mechanism includes a vertical driving mechanism, a cantilever mechanism, a force applying guiding mechanism and a balancing mechanism.
[0037] Among them, the vertical driving mechanism includes a screw mechanism 8 installed on the stand 3, the moving end of the screw mechanism 8 is a slider 81, the force column 82 is fixed to one side of the slider 81 through a connecting piece 83, and the top of the screw mechanism 8 is an operating knob 84 for manual adjustment. In other embodiments, an external motor can also be connected for electric adjustment.
[0038] The cantilever mechanism includes the cantilever 4 , a cantilever slider 41 and a cantilever track 42 . The cantilever track 42 is vertically installed on the stand 3 , and the cantilever 4 is installed in the cantilever track 42 through the cantilever slider 41 .
[0039] The force-applying guide mechanism comprises a first crank arm 7 mounted on the stand, a vertical guide hole is arranged at the end of the first crank arm 7, the force-applying column 82 matches the guide hole, the force-applying column 82 passes through the guide hole and acts on the top surface of the cantilever 4, and the force-applying point is located within a third of the cantilever end. A spring 85 is installed in the area above the guide hole of the force-applying column 82.
[0040] The balancing mechanism includes a second crank arm 9 installed on the stand, and a vertically arranged gas spring 10 is installed at the end of the second crank arm 9. The gas spring 10 is supported on the bottom surface of the cantilever 4, and the supporting point of the gas spring 10 is close to the midpoint of the cantilever 4. In other embodiments, the gas spring can be replaced by a hydraulic spring.
[0041] The installation heights of the first crank arm 7 and the second crank arm 9 are adjustable, and a long hole for adjustment is provided on the stand.
[0042] A triangular wedge head 21 is installed at the front upper end of the base 2 , and a counterweight block 22 is installed at the rear upper end of the base 2 .
[0043] Working principle:
[0044] Open the side window of the bead blasting instrument 11, and install the calibration mechanical sensor 1 above the sensor 6 under test, with the two being coaxial; move the calibration device to a position close to the side window, adjust the cantilever height to ensure that the cantilever height can reach into the side window and be located above the calibration mechanical sensor 1, and insert the triangular wedge block 21 into the narrow gap between the bottom of the bead blasting instrument and the ground to achieve stability of the entire device.
[0045] The screw mechanism is adjusted to drive the slider 81 and the force column 82 to move downward. The force column pushes the cantilever 4 to move downward. The force contact 5 at the far end of the cantilever 4 acts on the top force surface of the calibration mechanical sensor 1. At this time, the calibration mechanical sensor 1 and the sensor 2 under test are both under pressure. The values of the two are read for comparison. Since the calibration mechanical sensor 1 is a calibrated high-precision sensor, the accuracy of the actual detection value of the sensor 2 under test can be determined by comparison.
[0046] This method can realize arbitrary calibration of values between 0-100N, and both flexibility and accuracy are guaranteed.
[0047] In a specific embodiment, the sensor force value is reset to zero, and the automatic bead-bursting force value is reset to zero; the screw mechanism is adjusted, and the screw mechanism is stopped near the detector indication of 1000g, 2000g, 3000g, 4000g, 5000g, 6000g, 7000g, and 8000g, respectively. After stabilization, the indications of the tested sensor and the calibrated mechanical sensor are recorded respectively. The test data are shown in Table 1.
[0048]
[0049] Table 1 Comparison of values between the calibrated mechanical sensor and the tested sensor
[0050] The difference between the tested sensor and the calibrated mechanical sensor is within 0.1N, meeting the equipment's nominal ±0.1% FS.
[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.
Claims
1. An external blasting bead hardness mechanical calibration device, characterized in that: It includes a calibration mechanical sensor, a cantilever force applying mechanism and a mounting frame; The mounting frame includes a base and a stand, the cantilever force-applying mechanism is installed on the stand, the cantilever in the cantilever force-applying mechanism extends horizontally forward from the stand, the cantilever force-applying mechanism is used to drive the cantilever to move in the vertical direction, a force-applying contact is installed at the far end of the cantilever, the calibration mechanical sensor is a sensor that allows vertical installation and vertical force, and the force-applying contact matches the top force-bearing surface of the calibration mechanical sensor.
2. The external blasting bead hardness mechanical calibration device according to claim 1 is characterized in that: The cantilever force-applying mechanism comprises a vertical drive mechanism, a cantilever mechanism, a force-applying guide mechanism and a balancing mechanism; The cantilever mechanism includes the cantilever, a cantilever slider and a cantilever track. The cantilever track is vertically arranged and installed on the stand. The cantilever is installed in the cantilever track through the cantilever slider. The moving end of the vertical driving mechanism acts on the top surface of the cantilever.
3. The external blasting bead hardness mechanical calibration device according to claim 2 is characterized in that: The force guiding mechanism includes a first crank arm mounted on a stand, a vertical guide hole being arranged at the end of the first crank arm, and the end structure of the movable end of the vertical driving mechanism is a force column matching the guide hole, and the force column passes through the guide hole and acts on the top surface of the cantilever.
4. The external blasting bead hardness mechanical calibration device according to claim 3 is characterized by: The force application point of the force application column is located within a third of the section near the end of the cantilever.
5. The external blasting bead hardness mechanical calibration device according to claim 3 or 4, characterized in that: The force-applying column is provided with a spring in the area above the guide hole.
6. The external blasting bead hardness mechanical calibration device according to claim 5 is characterized in that: The balancing mechanism includes a second crank arm installed on the stand, and a vertically arranged elastic support member is installed at the end of the second crank arm. The elastic support member is supported on the bottom surface of the cantilever, and the supporting point of the elastic support member is close to the midpoint of the cantilever. The elastic support member is a gas spring or a hydraulic spring.
7. The external blasting bead hardness mechanical calibration device according to claim 3, 4 or 6, characterized in that: The vertical driving mechanism comprises a screw mechanism installed on a vertical frame, the moving end of the screw mechanism is a slider, and the force applying column is fixed to one side of the slider through a connecting piece.
8. The external blasting bead hardness mechanical calibration device according to claim 6 is characterized by: The installation heights of the first crank arm and the second crank arm are adjustable.
9. The external blasting bead hardness mechanical calibration device according to claim 1 or 2 or 3 or 4 or 6 or 8, characterized in that: A triangular wedge head is installed at the front portion of the upper end of the base.
10. The external blasting bead hardness mechanical calibration device according to claim 9, characterized in that: A counterweight is installed at the rear portion of the upper end of the base.