Tension, pressure and thrust three-in-one verification jig

Abstract

The utility model discloses a tension, pressure and thrust three-in-one checking jig, and belongs to the field of tension testing machines. Comprising a mounting plate, a jig supporting module, a verification cross beam module and a weight suspension cross beam, the jig supporting module comprises a jig mounting body, the jig mounting body is provided with a containing groove, and the verification cross beam module comprises a rotatable verification arm which is erected in the containing groove and connected with the two side walls of the containing groove through a first rotating shaft; the weight hanging beam module comprises a rotatable weight hanging arm which is erected in the containing groove and connected with the two side walls of the containing groove through a second rotating shaft, one end of the verification arm is connected with one end of the weight hanging arm, and the other end of the verification arm is provided with a tension verification area, a thrust verification area and a pressure verification area. According to the utility model, the tool does not need to be replaced, the vertically upward tension, the vertically downward pressure and the thrust in the horizontal direction can be verified in a compatible manner at the same time, and the complexity that the tool needs to be replaced for verification in the verification process is reduced.

Description

Technical Field

[0001] The present application belongs to the field of tensile testing machines, and specifically relates to a three-in-one tensile, compressive and thrust calibration fixture. Background Art

[0002] A tensile testing machine is a device used to measure the force required to apply to an object in different directions. It can measure vertical upward pulling force, vertical downward pressure, and horizontal thrust. In order to ensure the accuracy and reliability of the equipment, it needs to be calibrated regularly. During the calibration process, for sensors with larger ranges, a fixture is needed to proportionally reduce the applied force so that it can be calibrated with appropriate standard weights. This ensures that the equipment can provide accurate and reliable results when measuring forces in different directions and sizes.

[0003] In the process of implementing the prior art, the inventor discovered that:

[0004] When verifying the accuracy of the force applied by the tensile testing machine in different directions, it is necessary to prepare verification jigs in different directions to verify them. This process requires the tensile testing machine to change the verification jigs several times, which results in a cumbersome verification process.

[0005] Therefore, it is necessary to provide a technical solution that simplifies the calibration process and does not require replacement of the calibration fixture to solve the problem in the prior art that when the tensile testing machine is calibrated in different directions, the calibration fixture needs to be replaced, resulting in a cumbersome calibration process. Utility Model Content

[0006] The utility model aims to solve the problem in the prior art that when a tensile testing machine is calibrated in different directions, a calibration fixture needs to be replaced, resulting in a cumbersome calibration process.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A three-in-one calibration jig for tension, pressure and thrust, comprising a mounting plate, a jig support module mounted on the mounting plate, a calibration beam module connected to the jig support module, and a weight hanging beam connected to the jig support module, wherein the jig support module comprises a jig mounting body connected to the mounting plate, the jig mounting body being provided with a receiving groove, the calibration beam module comprising a rotatable calibration arm mounted in the receiving groove and connected to two side walls of the receiving groove via a first rotating axis, the weight hanging beam module comprising a rotatable weight hanging arm mounted in the receiving groove and connected to two side walls of the receiving groove via a second rotating axis, one end of the calibration arm being connected to one end of the weight hanging arm, and the other end of the calibration arm being provided with a tension calibration area, a thrust calibration area, and a pressure calibration area.

[0009] Furthermore, the tension verification area and the pressure verification area are respectively located on both sides of the first rotation axis; the tension verification area is located away from one end of the verification arm relative to the pressure verification area.

[0010] Furthermore, the tension verification area specifically includes: a tension protruding block; a first engaging hole provided on the bottom end surface of the tension protruding block; and a tension verification pin engaged with the first engaging hole.

[0011] Furthermore, the pressure verification area specifically includes: a second clamping hole provided on the upper end surface of the verification arm; and a pressure verification pin clamped to the second clamping hole.

[0012] Furthermore, the thrust verification area is located above the first rotating shaft, and the thrust verification area specifically includes: a thrust protrusion block; a third engaging hole provided on the end face of the side wall of the thrust protrusion block; and a thrust verification pin engaged with the third engaging hole.

[0013] Furthermore, a accommodating cavity is provided at one end of the verification arm at the position where it connects with one end of the weight hanging arm, and a connecting component connected to the end face of one end of the weight hanging arm is provided in the accommodating cavity; the connecting component specifically includes: a cantilever connecting bearing connected to the end face of one end of the weight hanging arm; and a third rotating shaft passing through the connecting bearing and connected to the two side walls of the accommodating cavity.

[0014] Furthermore, the jig support module also includes weight hanging arm limit pins installed on both sides of the jig mounting body accommodating groove, and the weight hanging arm limit pins are used to support the weight hanging arm.

[0015] Furthermore, a first rotary bearing and a second rotary bearing are respectively provided at the connection position between the accommodating groove and the first rotary shaft; a third rotary bearing and a fourth rotary bearing are also respectively provided at the connection position between the accommodating groove and the second rotary shaft.

[0016] Furthermore, a counterweight assembly is provided at one end of the calibration arm, specifically comprising: a connecting rod connected to the calibration arm; and a counterweight block connected to the connecting rod.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The present application provides a three-in-one calibration fixture for tension, pressure and thrust, which does not require fixture replacement and is compatible with calibrating vertical upward tension, vertical downward pressure, and horizontal thrust, thereby reducing the tediousness of the calibration process requiring fixture replacement. In addition, by adjusting the counterweight assembly, the calibration fixture is made balanced when unloaded, so that subsequent calibration is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a three-in-one calibration fixture for tension, pressure and thrust provided by the utility model;

[0020] Figure 2 Another schematic diagram of the three-in-one tension, pressure and thrust calibration fixture provided by the utility model;

[0021] Figure 3 for Figure 2 Another schematic diagram of the cross section A-A of the three-in-one calibration fixture for tension, pressure and thrust provided by the present invention;

[0022] Figure 4 A schematic diagram of a calibration jig provided by the utility model with the mounting plate and the jig mounting body removed.

[0023] Serial number in the figure: 100, a three-in-one calibration fixture for tension, pressure and thrust;

[0024] 1. Mounting plate; 2. Fixture support module; 21. Fixture mounting body; 211. Accommodation slot; 212. Limit pin of weight hanging arm; 22. First rotating shaft; 23. Second rotating shaft; 24. First rotating bearing; 25. Second rotating bearing 25; 26. Third rotating bearing; 27. Fourth rotating bearing; 3. Verification beam module; 31. Verification arm; 311. Accommodation chamber; 32. Connection assembly; 321. Cantilever connection bearing; 322. First Three rotating axes; 33, counterweight assembly; 331, connecting rod; 332, counterweight block; 34, tension calibration area; 241, tension protrusion block; 342, first clamping hole; 343, tension calibration pin; 35, pressure calibration area; 351, second clamping hole; 352, pressure calibration pin; 36, thrust calibration area; 361, thrust protrusion block; 362, third clamping hole; 363, thrust calibration pin; 4, weight hanging beam; 41, weight hanging arm. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Reference Figure 1 , Figure 2The present application provides a three-in-one tension, pressure and thrust calibration fixture 100, including a mounting plate 1, a fixture support module 2 mounted on the mounting plate 1, a calibration beam module 3 connected to the fixture support module 2, and a weight suspension beam 4 connected to the fixture support module 2. The jig support module 2 includes a jig mounting body 21 connected to the mounting plate 1, and the jig mounting body 21 is provided with a receiving groove 211. The verification beam module 3 includes a rotatable verification arm 31 mounted in the receiving groove 211 and connected to the two side walls of the receiving groove 211 through a first rotating axis 22. The weight hanging beam 4 module includes a rotatable weight hanging arm 41 mounted in the receiving groove 211 and connected to the two side walls of the receiving groove 211 through a second rotating axis 23. One end of the verification arm 31 is connected to one end of the weight hanging arm 41, and the other end of the verification arm 31 is provided with a tension verification area 34, a thrust verification area 36, ​​and a pressure verification area 35.

[0027] Specifically, the mounting plate 1 is used to mount the calibration fixture on the tensile testing machine, and the mounting plate 1 is connected to the tensile testing machine by bolts. At the same time, the mounting plate 1 is also used to connect to the fixture support module 2.

[0028] The jig support module 2 is used to provide support for the calibration beam module 3 and the weight hanging beam 4. The jig support module 2 includes a jig mounting body 21 connected to the mounting plate 1, and the jig mounting body 21 and the mounting plate 1 are connected by bolts. The jig mounting body 21 is provided with a receiving groove 211, and the calibration beam module 3 and the weight hanging beam 4 are arranged in the receiving groove 211. The jig support module 2 also includes a weight hanging arm 41 limit pin 212 installed on both sides of the receiving groove 211 of the jig mounting body 21, and the weight hanging arm 41 limit pin 212 is used to support the weight hanging arm 41.

[0029] The calibration arm 31 is rotatably connected to the receiving groove 211 through the first rotating shaft 22. A first rotating bearing 24 and a second rotating bearing 25 are respectively provided at the connecting position of the receiving groove 211 and the first rotating shaft 22; in addition, nuts for locking the first rotating shaft 22 are respectively provided on both sides outside the receiving groove 211 of the fixture mounting body 21. (Not shown in the figure)

[0030] A receiving cavity 311 is provided at one end of the verification arm 31 at the position where it is connected to one end of the weight hanging arm 41, and a connecting component 32 connected to the end face of one end of the weight hanging arm 41 is provided in the receiving cavity 311. The connecting component 32 specifically includes: a cantilever connecting bearing 321 connected to the end face of one end of the weight hanging arm 41; and a third rotating shaft 322 passing through the connecting bearing and connected to the two side walls of the receiving cavity 311. It should be noted that retaining springs for limiting the third rotating shaft 322 are also provided on both sides outside the receiving cavity 311 of the verification arm 31.

[0031] In addition, a counterweight assembly 33 is provided at one end of the calibration arm 31, specifically comprising: a connecting rod 331 connected to the calibration arm 31; and a counterweight block 332 connected to the connecting rod 331. The counterweight assembly 33 is mainly used to adjust the calibration beam module 3 and the weight suspension beam 4 to maintain balance under the no-load condition of the calibration fixture, so as to ensure that the calibration fixture is more accurate. The counterweight block 332 can be a counterweight bolt.

[0032] The other end of the calibration arm 31 is provided with a tension calibration area 34, a thrust calibration area 36, ​​and a pressure calibration area 35. The tension calibration area 34, the thrust calibration area 36, ​​and the pressure calibration area 35 are used to respectively calibrate the vertical upward tension, the vertical downward pressure, and the horizontal thrust.

[0033] In combination with the verification of forces in different directions during the verification of tension, thrust, and pressure, the present application respectively sets up a tension verification area 34, a thrust verification area 36, ​​and a pressure verification area 35, so as to realize the verification by cooperating with the weight suspension beam 4 module. Specifically, the tension verification area 34 and the pressure verification area 35 are respectively located on both sides of the first rotating shaft 22, and the tension verification area 34 is located away from one end of the verification arm 31 relative to the pressure verification area 35, and the thrust verification area 36 is located above the first rotating shaft 22.

[0034] The tension verification area 34 includes: a tension protruding block 241; a first clamping hole 342 provided on the bottom end surface of the tension protruding block 241; and a tension verification pin 343 clamped to the first clamping hole 342. The pressure verification area 35 specifically includes: a second clamping hole provided on the upper end surface of the verification arm 31; and a pressure verification pin 352 clamped to the second clamping hole. The thrust verification area 36 is located above the first rotating shaft 22, and the thrust verification area 36 specifically includes: a thrust protruding block 361; a third clamping hole 362 provided on the side wall end surface of the thrust protruding block 361; and a thrust verification pin 363 clamped to the third clamping hole 362.

[0035] The weight hanging arm 41 is rotatably connected to the receiving groove 211 through the second rotating shaft 23. The third rotating shaft 322 bearing 26 and the fourth rotating bearing 27 are respectively provided at the connecting position of the receiving groove 211 and the second rotating shaft 23. In addition, nuts for locking the first rotating shaft 22 are respectively provided on both sides outside the receiving groove 211 of the fixture mounting body 21. (Not shown in the figure)

[0036] One end of the weight hanging arm 41 is provided with an end surface connected to the end surface of the connecting assembly 32, and the other end of the weight hanging arm 41 is provided with a row of holes for hanging standard weights.

[0037] The present application is specifically manifested in the actual application scenario as follows: before the calibration fixture works, it is first leveled. That is, the calibration arm 31 of the calibration beam module 3 and the weight hanging arm 41 are kept in balance. By adjusting the counterweight block 332 of the counterweight assembly 33, the weight hanging arm 41 is not connected to the limit pin 212 of the weight hanging arm 41 when it is unloaded, so that the calibration arm 31 of the calibration beam module 3 and the weight hanging arm 41 are kept in balance. It can be understood that the limit pin 212 of the weight hanging arm 41 is used to support the weight hanging arm 41 when the calibration fixture is not working.

[0038] When the calibration jig needs to work, a standard weight is hung on the weight arm 41, and the force sensor of the tensile testing machine is contacted with the corresponding calibration pin according to the force that the tensile testing machine needs to test (i.e., one of tension, thrust, and pressure). Finally, the tensile testing machine slowly applies force to the calibration jig until the weight arm 41 is lifted. The actual value of the force sensor is calculated through the weight of the standard weight and the amplification ratio of the jig, thereby achieving the calibration of the force sensor of the tensile testing machine.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A three-in-one calibration jig for tension, pressure and thrust, comprising a mounting plate, a jig support module mounted on the mounting plate, a calibration beam module connected to the jig support module, and a weight suspension beam connected to the jig support module, characterized in that: The jig support module includes a jig mounting body connected to the mounting plate, the jig mounting body is provided with a receiving groove, the verification beam module includes a rotatable verification arm mounted in the receiving groove and connected to the two side walls of the receiving groove through a first rotating axis, the weight hanging beam module includes a rotatable weight hanging arm mounted in the receiving groove and connected to the two side walls of the receiving groove through a second rotating axis, one end of the verification arm is connected to one end of the weight hanging arm, and the other end of the verification arm is provided with a tension verification area, a thrust verification area, and a pressure verification area.

2. The calibration fixture according to claim 1, characterized in that: The tension test area and the pressure test area are respectively located on both sides of the first rotating shaft; the tension test area is located away from one end of the test arm relative to the pressure test area.

3. The calibration fixture according to claim 2, characterized in that: The tension test area specifically includes: Tensile protrusion block; A first clamping hole provided on the bottom end surface of the tension protruding block; A tension checking pin is clamped in the first clamping hole.

4. The calibration fixture according to claim 2, characterized in that: The pressure calibration area specifically includes: A second clamping hole provided on the upper end surface of the calibration arm; A pressure checking pin is clamped in the second clamping hole.

5. The calibration fixture according to claim 1, characterized in that: The thrust verification area is located above the first rotation axis, and the thrust verification area specifically includes: Thrust protrusion block; A third engaging hole provided on the end surface of the side wall of the thrust protruding block; A thrust checking pin is clamped in the third clamping hole.

6. The calibration fixture according to claim 1, characterized in that: A receiving cavity is provided at one end of the calibration arm at a position where it is connected to one end of the weight hanging arm, and a connecting component connected to an end surface of one end of the weight hanging arm is provided in the receiving cavity; The connection component specifically includes: A cantilever connecting bearing connected to the end surface of one end of the weight hanging arm; A third rotating shaft passes through the connecting bearing and is connected to both side walls of the accommodating cavity.

7. The calibration fixture according to claim 1, characterized in that: The jig support module also includes weight hanging arm limit pins installed on both sides of the jig installation body accommodating groove, and the weight hanging arm limit pins are used to support the weight hanging arm.

8. The calibration fixture according to claim 1, characterized in that: A first rotary bearing and a second rotary bearing are respectively provided at the connection position between the receiving groove and the first rotary shaft; A third rotating bearing and a fourth rotating bearing are respectively provided at the connection position between the accommodating groove and the second rotating shaft.

9. The calibration fixture according to claim 1, characterized in that: One end of the calibration arm is also provided with a counterweight assembly, which specifically includes: A connecting rod connected to the calibration arm; A counterweight connected to the connecting rod.

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