A manual hydraulic work force gauge calibrating device

Abstract

The utility model relates to force measuring instrument calibrating device technical field, especially for a kind of manual hydraulic working force measuring instrument calibrating device, comprising: stand;Sliding support, sliding connection in the stand top;Jack, connect in the stand top;Standard force sensor, connect on the sliding support, and located in the jack just above;The tensioned measuring piece / pressed measuring piece, the tensioned measuring piece is connected between the sliding support and the stand, the pressed measuring piece is connected to the sliding support bottom, and located in the jack just below, a set of device can complete tension and pressure calibration, improve equipment utilization.

Description

Technical Field

[0001] This utility model relates to the technical field of force measuring instrument calibration devices, and in particular to a manual hydraulic working force measuring instrument calibration device. Background Technology

[0002] Force gauge calibration refers to the process of testing and evaluating the metrological performance of a force gauge, such as its indication error, repeatability, and zero-return error, using standard methods and equipment to ensure that its measurement results are accurate and reliable.

[0003] In the prior art, patent application number 201920333584.2, entitled "A Verification Platform for Force Measuring Instrument Verification", discloses that: the through hole at one end of the force measuring instrument is fitted onto the hook, and the rotation of the knob causes the threaded rod to drive the pressure plate to retract and press the force measuring instrument, so that the force measuring instrument is in a vertical state. The motor drives the rotating shaft to move the hook down and connect it with the through hole above the force measuring instrument. The motor drives the hook up to perform the verification.

[0004] The above-mentioned device can only measure tension gauges, but cannot measure pressure gauges. Utility Model Content

[0005] To address the problems in the existing technology, this utility model provides a manual hydraulic working force measuring instrument calibration device, comprising: a stand;

[0006] A sliding bracket is slidably connected to the top of the upright frame;

[0007] The jack is connected to the top of the upright frame;

[0008] A standard force sensor is connected to the sliding bracket and located directly above the jack;

[0009] The tension test member / compression test member is connected between the sliding bracket and the upright frame, and the compression test member is connected to the bottom of the sliding bracket and located directly below the jack.

[0010] Furthermore, the support frame includes: an upper support plate and a lower support plate;

[0011] Four columns are connected between the upper support plate and the lower support plate;

[0012] The sliding bracket is slidably connected to the upper support plate;

[0013] The jack is connected to the upper support plate.

[0014] Furthermore, the sliding bracket includes: an upper beam and a lower beam;

[0015] Two sliding columns are connected between the upper beam and the lower beam, and the sliding columns are slidably connected to the upper support plate;

[0016] The lower beam is located between the lower support plate and the upper support plate. When calibrating the pressure test piece, the pressure test piece is connected to the top of the lower beam.

[0017] When calibrating the tensile test piece, the tensile test piece is connected between the lower support plate and the lower beam;

[0018] The standard force sensor is connected to the bottom of the upper beam.

[0019] Furthermore, a lower hinge seat is connected to the top of the lower support plate, and an upper hinge seat is connected to the bottom of the lower beam;

[0020] The tensioned component is connected between the lower hinge and the upper hinge.

[0021] Furthermore, it also includes a hydraulic control box, which is connected to the jack.

[0022] Furthermore, it also includes: a measurement display;

[0023] The measurement display includes an amplifier circuit electrically connected to the standard force sensor.

[0024] An A / D converter is electrically connected to the amplifier circuit.

[0025] The CPU is electrically connected to the A / D converter;

[0026] The display screen is electrically connected to the CPU.

[0027] Furthermore, a pad is connected to the bottom of the lower beam.

[0028] Furthermore, it also includes: guidance mechanisms;

[0029] The guiding mechanism includes:

[0030] Mounting plate, connected to the top of the lower beam;

[0031] The pulley is rotatably connected to the mounting plate and slidably connected to the column.

[0032] The beneficial effects of the technical solution provided by this utility model are as follows: In this utility model, a vertical frame and a sliding bracket slidably connected to the vertical frame are provided. A jack is connected to the top of the vertical frame, and a standard force sensor is connected to the sliding bracket. When the tensile test piece is tested, the tensile test piece is connected between the sliding bracket and the vertical frame. The hydraulic cylinder of the jack rises, and when the standard force sensor is subjected to force, the tension gauge is also subjected to force at the same time. When the compressive test piece is tested, the compressive test piece is connected to the bottom of the sliding bracket. The cylinder rises, causing the standard force sensor to be subjected to force, and the compressive test piece is subjected to force at the same time. One set of devices can complete the tensile and compressive force tests, improving the equipment utilization rate. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a manual hydraulic working force measuring instrument calibration device provided by this utility model;

[0034] Figure 2 This is a cross-sectional schematic diagram of a manual hydraulic working force measuring instrument calibration device provided by this utility model;

[0035] Figure 3 This is a side view of a manual hydraulic working force measuring instrument calibration device provided by this utility model;

[0036] Figure 4 This is a side view of a manual hydraulic working force measuring instrument calibration device provided by this utility model;

[0037] Figure 5 This is a schematic diagram of a manual hydraulic working force measuring instrument calibration device provided by this utility model.

[0038] Reference numerals: 1-Hex socket head cap set screw; 2-First nut; 3-Upper beam; 4-Standard force sensor; 5-Measured component; 6-Sliding column; 7-Support rod; 8-Jack; 9-Second nut; 10-Upper support plate; 11-Mounting plate; 12-First hex socket head cap screw; 13-Column; 14-Lower beam; 15-Upper hinge; 16-Measured component; 17-Lower hinge; 18-Lower support plate; 19-Pan block; 20-Second hex socket head cap screw; 21-Pin; 22-Cotter pin; 23-Hydraulic control box; 24-Pulley; 25-Measuring display. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0041] It should be noted that in this embodiment, the orientation or positional relationship indicated by terms such as "bottom," "top," "left," and "right" is based on the orientation or positional relationship shown in the accompanying drawings. It is used only for the convenience of describing this application and for simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] It should also be noted that, in this embodiment, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] See Figures 1-5 A manual hydraulic working force gauge calibration device includes: a stand and a sliding support.

[0044] The support frame includes an upper support plate 10 and a lower support plate 18. Four columns 13 are connected between the upper support plate 10 and the lower support plate 18. The upper and lower ends of the four columns 13 are connected to screws, which pass through the upper support plate 10 and the lower support plate 18 respectively. Each screw is threaded with a second nut 9 for fixation. A jack 8 (RC-608) is fixedly connected to the top of the upper support plate 10 by a first hexagon socket head cap screw 12. The bottom four corners of the lower support plate 18 are fixedly connected to pads 19 by second hexagon socket head cap screws 20. When in use, the pads are firmly fixed to the ground by expansion bolts.

[0045] The sliding support includes an upper beam 3 and a lower beam 14. Two sliding columns 6 are connected between the upper beam 3 and the lower beam 14. The upper and lower ends of the two sliding columns 6 are connected to screws, which pass through the upper beam 3 and the lower beam 14 respectively. The screws are threaded with a first nut 2 and fixed by a hexagonal set screw 1. The two sliding columns 6 pass through the upper support plate 10 and are slidably connected to the upper support plate 10 by a linear bearing. At this time, the lower beam 14 is located between the upper support plate 10 and the lower support plate 18, and the upper beam 3 is located directly above the jack 8. A standard force sensor 4 is installed at the bottom of the upper beam 3.

[0046] When installing the standard force sensor 4, operate the hydraulic control box to raise the jack cylinder. Use two support rods 7 to support it between the upper support plate 10 and the upper beam 3. Operate the hydraulic control box to lower the jack cylinder. Use M12*60 bolts to tighten the standard force sensor 4 to the bottom of the upper beam 3 in reverse. Place the pressure cap of the standard force sensor 4 into the sensor tray. Operate the hydraulic control box to raise the jack cylinder so that the pressure head of the standard force sensor 4 enters the pressure cap. Remove the two support rods 7, and then lower the jack cylinder to the initial position. Tighten the three fixing nuts on the sensor tray. The installation of the standard force sensor 4 is now complete. Press the power switch on the hydraulic control box to stop the oil pump.

[0047] Furthermore, a guiding mechanism is also provided, which includes four mounting plates 11. The four mounting plates 11 are fixed in pairs on opposite sides of the top of the lower beam 14, and the other end of the four mounting plates 11 is rotatably connected to a pulley 24. The four pulleys 24 are slidably connected to the four columns 13 respectively.

[0048] Additionally, see Figure 5 The manual hydraulic working force measuring instrument calibration device also includes: a measuring display, an amplifier circuit electrically connected to a standard force sensor, an A / D converter electrically connected to the amplifier circuit, a CPU electrically connected to the A / D converter, and a display screen electrically connected to the CPU. The CPU model can be QuantumX MX440B.

[0049] The hydraulic control box includes an oil tank and an oil pump. The oil pump is connected to the oil tank and to the jack via an oil delivery pipe. The jack is also connected to the oil tank via a return pipe. An inlet valve is connected to the oil delivery pipe, and a return valve is connected to the return pipe. When connecting the oil circuit, connect the hydraulic control box and the jack oil pipes, add 46# wear-resistant oil through the oil inlet to more than 2 / 3 of the oil gauge mark, turn on the power to the control box, loosen the return valve, press the power switch, and the oil pump will start working. Turn the oil delivery valve counterclockwise, and continuously jog the power switch to purge the air from the oil pump and plunger. Then, close the return valve and the oil delivery valve.

[0050] The lower support plate 18 is connected to a lower hinge seat 17 at its top, and the lower beam 14 is connected to an upper hinge seat 15 at its bottom. Specifically, during testing, the two ends of the tested component 16 (tension gauge) are connected to the lower hinge seat 17 and the upper hinge seat 15, and fixed by pins 21 and cotter pins 22. The power to the measurement display is turned on, and the system is preheated for 15 minutes. The return oil valve is closed by rotating clockwise, and the power switch is pressed. The oil pump starts working. The oil supply valve is rotated counterclockwise (opening less than 30%) from slow to fast, allowing the jack cylinder to rise slowly. The cylinder pushes the upper support plate, causing the standard force sensor to be stressed. The lower beam stretches the tested component (tension gauge). When the standard force sensor is stressed, the tension gauge is also stressed simultaneously. The strain gauge attached to the elastic body generates a millivolt-level signal, which is sent to the measurement display. After filtering, amplification, and A / D conversion by the display... Switch to the standard force value display and observe the force value display status. Adjust the oil supply valve counterclockwise or clockwise to bring the applied force value to the required stable value. At this point, read the standard value displayed on the force gauge and the applied force value of the instrument being tested to complete the verification at one or more points. After the verification is completed, rotate the oil supply valve clockwise to close it, press the power switch to turn off the oil pump power, and slowly open the return oil valve counterclockwise. The jack cylinder will automatically descend to the initial position.

[0051] When the pressure test piece 5 (pressure gauge) is being tested, the pressure test piece is installed on the top of the lower beam. The cylinder pushes the upper support plate, causing the standard force sensor to be stressed. The lower beam moves upward, and the pressure test piece on its top comes into contact with the fixed structure above, causing the pressure test piece to be stressed at the same time.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A manual hydraulic working force gauge calibration device, characterized in that, include: Erecting the frame; A sliding bracket is slidably connected to the top of the upright frame; Jack (8) is connected to the top of the frame; A standard force sensor (4) is connected to the sliding bracket and located directly above the jack (8); The tension test piece (16) and the compression test piece (5) are connected between the sliding bracket and the upright frame, and the compression test piece (5) is connected to the bottom of the sliding bracket and located directly below the jack (8).

2. The manual hydraulic working force gauge calibration device according to claim 1, characterized in that, The support frame includes: an upper support plate (10) and a lower support plate (18); Four columns (13) are connected between the upper support plate (10) and the lower support plate (18). The sliding bracket is slidably connected to the upper support plate (10). The jack (8) is connected to the upper support plate (10).

3. The manual hydraulic working force gauge calibration device according to claim 2, characterized in that, The sliding support includes: an upper beam (3) and a lower beam (14); Two sliding columns (6) are connected between the upper beam (3) and the lower beam (14), and the sliding columns (6) are slidably connected to the upper support plate (10); The lower beam (14) is located between the lower support plate (18) and the upper support plate (10). When the pressure test piece (5) is inspected, the pressure test piece (5) is connected to the top of the lower beam (14). When the tensile test piece (16) is tested, the tensile test piece (16) is connected between the lower support plate (18) and the lower beam (14); The standard force sensor (4) is connected to the bottom of the upper beam (3).

4. The manual hydraulic working force gauge calibration device according to claim 3, characterized in that, The lower support plate (18) is connected to a lower hinge seat (17) at the top, and the lower beam (14) is connected to an upper hinge seat (15) at the bottom. The tensioned component (16) is connected between the lower hinge (17) and the upper hinge (15).

5. The manual hydraulic working force gauge calibration device according to claim 1, characterized in that, Also includes: The hydraulic control box (23) is connected to the jack (8).

6. The manual hydraulic working force gauge calibration device according to claim 1, characterized in that, Also includes: a measurement display; The measurement display includes an amplifier circuit electrically connected to the standard force sensor. An A / D converter is electrically connected to the amplifier circuit. The CPU is electrically connected to the A / D converter; The display screen is electrically connected to the CPU.

7. The manual hydraulic working force gauge calibration device according to claim 3, characterized in that, The bottom of the lower beam (14) is connected to the pad (19).

8. The manual hydraulic working force gauge calibration device according to claim 3, characterized in that, Also includes: Guiding mechanism; The guiding mechanism includes: Mounting plate (11) is attached to the top of the lower beam (14); The pulley (24) is rotatably connected to the mounting plate (11) and slidably connected to the column (13).

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