Mechanical property testing device for excavator handle
By integrating a pressure sensor and a laser displacement sensor into the excavator handle testing device, handle displacement-handle force curves and handle displacement-handle torque curves are generated, solving the problem that existing devices cannot verify the mechanical performance of the handle and realizing the effective verification of the handle's mechanical performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XCMG EXCAVATOR MACHINERY CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-04-21
AI Technical Summary
Existing excavator handle testing devices cannot collect handle displacement-handle force curves and handle displacement-handle torque curves, thus failing to effectively verify the mechanical performance of the handle.
A testing device was designed, comprising a handle force testing unit, a handle torque testing unit, a handle displacement testing unit, and a host computer. The device uses a pressure sensor and a laser displacement sensor to collect handle force and displacement data, and generates handle displacement-handle force curves and handle displacement-handle torque curves.
It can accurately determine whether the handle force exceeds the standard, identify the trend of handle force change, and verify the mechanical performance of the handle through handle torque, thus meeting the quality inspection requirements of manufacturers for parameter comparison.
Smart Images
Figure CN224152042U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a mechanical performance testing device for excavator handles, belonging to the field of excavator testing technology. Background Technology
[0002] Currently, excavator handle force testing follows the standard GB / T 8595-2008 "Operating Devices for Earthmoving Machinery Operators," and compliance is determined based on the given limits. A commonly used handle force testing device is a digital push-pull force gauge, which displays the handle force in real time when the excavator handle is moved. However, digital push-pull force gauges are relatively expensive, only offer digital display functionality, and cannot reveal the relationship between handle force and displacement, thus failing to truly describe the handle's mechanical characteristics. Furthermore, excavator handle manufacturers provide design parameters as handle displacement-handle torque curves, requiring the handle torque to be calculated based on the handle force and lever arm before compliance is determined. In summary, existing excavator handle testing methods cannot collect handle displacement-handle force curves or handle displacement-handle torque curves, which is detrimental to verifying the handle's mechanical performance. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a mechanical performance testing device for excavator handles, which can collect handle displacement-handle force curves and handle displacement-handle torque curves, which is beneficial to the verification of the mechanical performance of the handles.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0005] A mechanical performance testing device for an excavator handle includes a handle force testing unit, a handle torque testing unit, a handle displacement testing unit, and a host computer. The handle force testing unit includes a handle pushing structure, on which a pressure sensor for detecting handle force is mounted. The pressure sensor is sequentially and unidirectionally electrically connected to a first microcontroller, a first serial communication module, and the host computer. The handle torque testing unit includes a handle lever arm data acquisition module, which is sequentially and unidirectionally electrically connected to a second serial communication module and the host computer. The handle displacement testing unit includes a displacement sensor, which is sequentially and unidirectionally electrically connected to a second microcontroller, a second serial communication module, and the host computer.
[0006] The handle force testing unit includes a first control microcontroller operation module, the input and output terminals of which are electrically connected to the host computer and the first microcontroller, respectively.
[0007] The handle displacement testing unit includes a second control microcontroller operation module, the input and output terminals of which are electrically connected to the host computer and the second microcontroller, respectively.
[0008] The pressure sensor is connected to the first microcontroller, the first microcontroller is connected to the first serial communication module, and the first serial communication module is connected to the host computer via data communication lines.
[0009] The handle lever arm data acquisition module and the second serial communication module are connected via data communication lines, as are the second serial communication module and the host computer.
[0010] The displacement sensor is connected to the second microcontroller, the second microcontroller is connected to the third serial communication module, and the third serial communication module is connected to the host computer via data communication lines.
[0011] The first control microcontroller operating module is connected to the host computer and the first microcontroller via an electrical connection cable.
[0012] The second control microcontroller operating module is connected to the host computer and the second microcontroller via an electrical connection cable.
[0013] The displacement sensor is a laser displacement sensor.
[0014] The pressure sensor is a strain gauge sensor. The strain gauge deforms as the handle is subjected to force, causing a change in resistance, which is modulated into a voltage signal based on a Wheatstone bridge circuit.
[0015] The beneficial effects of this utility model are as follows: This utility model provides a mechanical performance testing device for excavator handles. It collects handle force through a pressure sensor and handle displacement through a laser displacement sensor. Combined with the handle force, it generates a handle displacement-handle force curve, which can determine whether the handle force exceeds the standard and effectively identify the trend of handle force change. In addition, the handle torque is calculated based on the handle force and the handle lever arm, and compared with the parameters of the handle manufacturer for quality inspection, which is beneficial to the verification of the mechanical performance of the handle. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a mechanical performance testing device for an excavator handle according to the present invention;
[0017] Figure 2 This is a schematic diagram of the testing process for a mechanical performance testing device for an excavator handle according to the present invention;
[0018] The figures are labeled as follows: 1-Handle force testing unit; 2-Handle torque testing unit; 3-Handle displacement testing unit; 4-Host computer; 11-Handle pushing structure; 12-First microcontroller; 13-First control microcontroller operation module; 14-First serial communication module; 21-Handle lever arm data acquisition module; 22-Second serial communication module; 31-Displacement sensor; 32-Second microcontroller; 33-Second control microcontroller operation module; 34-Third serial communication module. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and should not be used to limit the protection scope of the present invention.
[0020] Example 1
[0021] like Figure 1 As shown, this utility model discloses a mechanical performance testing device for an excavator handle, including a handle force testing unit 1, a handle torque testing unit 2, a handle displacement testing unit 3, and a host computer 4.
[0022] The handle force testing unit 1 includes a handle pushing structure 11, on which a pressure sensor for detecting handle force is installed. The pressure sensor is sequentially electrically connected to the first microcontroller 12, the first serial communication module 14, and the host computer 4.
[0023] The handle torque testing unit 2 includes a handle lever arm data acquisition module 21, which is unidirectionally electrically connected to the second serial communication module 22 and the host computer 4. The handle lever arm is obtained through the handle model. The handle lever arm data acquisition module 21 is used to input the handle lever arm, and then the data is transmitted to the host computer 4 through the second serial communication module 22.
[0024] The handle displacement testing unit 3 includes a displacement sensor 31, which is unidirectionally electrically connected to the second microcontroller 32, the third serial communication module 34, and the host computer 4 in sequence.
[0025] The host computer 4 is connected to the first serial communication module 14, the second serial communication module 22, and the third serial communication module 34, respectively. It is used to synchronously receive and process the handle force data and handle displacement data acquired by the host computer.
[0026] like Figure 2As shown, the working process of this utility model is as follows: the handle is pushed by the handle pushing device to perform a handle force test. The handle force is detected by a pressure sensor, processed by the first microcontroller, and transmitted to the host computer via the first serial communication module. The handle lever arm is obtained by the handle model, and then input into the handle lever arm data acquisition module and transmitted to the host computer via the second serial communication module. Then, the handle force and the handle lever arm are multiplied to obtain the handle torque data. At the same time, the handle displacement test is performed. The handle displacement is detected by a displacement sensor, processed by the second microcontroller, and transmitted to the host computer via the third serial communication module. Finally, the handle force data and handle displacement data are combined to generate handle displacement-handle force curves and handle displacement-handle torque curves to characterize the mechanical performance of the handle.
[0027] This invention collects handle force using a pressure sensor and handle displacement using a laser displacement sensor. By combining the handle force with the handle displacement-handle force curve, it can determine whether the handle force exceeds the standard and effectively identify the trend of handle force change. In addition, the handle torque is calculated based on the handle force and the handle lever arm, and compared with the parameters of the handle manufacturer for quality inspection, which is beneficial for verifying the mechanical performance of the handle.
[0028] Example 2
[0029] like Figure 1 As shown, this utility model discloses a mechanical performance testing device for an excavator handle, including a handle force testing unit 1, a handle torque testing unit 2, a handle displacement testing unit 3, and a host computer 4.
[0030] The handle force testing unit 1 includes a handle pushing structure 11, on which a pressure sensor for detecting handle force is installed. The pressure sensor is sequentially and unidirectionally electrically connected to a first microcontroller 12, a first serial communication module 14, and a host computer 4. The pressure sensor is a strain gauge sensor. During testing, the handle pushing device pushes the handle to move. The strain gauge deforms as the handle moves under force, causing a change in resistance. This change in resistance is converted into a voltage signal through a Wheatstone bridge circuit.
[0031] During the initial test, the proportionality coefficient between the force on the strain gauge and the output voltage needs to be calibrated using standard weights. If a standard weight of mass m is placed on the strain gauge, the force on the strain gauge will be... If the output voltage of the Wheatstone bridge is The proportionality coefficient between the force on the strain gauge and the output voltage is... The proportionality coefficient k is programmed into the first microcontroller to establish the relationship between the force on the strain gauge (i.e., the handle force) and the output voltage. .
[0032] In this invention, the handle torque testing unit 2 includes a handle torque data acquisition module 21, which is sequentially and unidirectionally electrically connected to the second serial communication module 22 and the host computer 4. The handle torque is obtained through the handle model, and the handle torque data acquisition module 21 is used to input the handle torque, which is then transmitted to the host computer 4 through the second serial communication module 22.
[0033] The handle displacement testing unit 3 includes a displacement sensor 31, which is a laser displacement sensor. The displacement sensor 31 is unidirectionally electrically connected to the second microcontroller 32, the third serial communication module 34, and the host computer 4 in sequence.
[0034] The host computer 4 is connected to the first serial communication module 14, the second serial communication module 22, and the third serial communication module 34, respectively. It is used to synchronously receive and process the handle force data and handle displacement data acquired by the host computer.
[0035] In addition, the handle force testing unit 1 of this utility model includes a first control microcontroller operating module 13, the input and output terminals of which are electrically connected to the host computer 4 and the first microcontroller 12, respectively. The handle displacement testing unit 3 includes a second control microcontroller operating module 33, the input and output terminals of which are electrically connected to the host computer 4 and the second microcontroller 32, respectively. The first control microcontroller operating module 13 and the second control microcontroller operating module 33 control the operation of the first microcontroller 12 and the second microcontroller 32, respectively.
[0036] Specifically, in this invention, the pressure sensor is connected to the first microcontroller 12, the first microcontroller 12 is connected to the first serial communication module 14, and the first serial communication module 14 is connected to the host computer 4 via data communication lines. The handle lever arm data acquisition module 21 is connected to the second serial communication module 22, and the second serial communication module 22 is connected to the host computer 4 via data communication lines. The displacement sensor 31 is connected to the second microcontroller 32, the second microcontroller 32 is connected to the third serial communication module 34, and the third serial communication module 34 is connected to the host computer 4 via data communication lines. The first control microcontroller operation module 13 is connected to the host computer 4 and the first microcontroller 12 via electrical connection lines. The second control microcontroller operation module 33 is connected to the host computer 4 and the second microcontroller 32 via electrical connection lines.
[0037] like Figure 2As shown, the working process of this utility model is as follows: The host computer controls the first control microcontroller operating module to run the first microcontroller through electrical connection, and controls the second control microcontroller operating module to run the second microcontroller. Then, the handle is pushed by the handle pushing device to perform handle force testing. The handle force is detected by the pressure sensor, processed by the first microcontroller, and transmitted to the host computer through the first serial communication module. The handle lever arm is obtained by the handle model, and then input by the handle lever arm data acquisition module and transmitted to the host computer through the second serial communication module. Then, the handle force and the handle lever arm are multiplied to obtain the handle torque data. At the same time, the handle displacement is tested. The handle displacement is detected by the displacement sensor, processed by the second microcontroller, and transmitted to the host computer through the third serial communication module. Finally, the handle force data and handle displacement data are combined to generate handle displacement-handle force curves and handle displacement-handle torque curves to characterize the mechanical performance of the handle.
[0038] The above are merely preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.
Claims
1. A device for testing the mechanical properties of a handle of an excavator, characterized in that: The system includes a handle force testing unit (1), a handle torque testing unit (2), a handle displacement testing unit (3), and a host computer (4). The handle force testing unit (1) includes a handle pushing structure (11), on which a pressure sensor for detecting handle force is installed. The pressure sensor is unidirectionally electrically connected to a first microcontroller (12), a first serial communication module (14), and the host computer (4). The handle torque testing unit (2) includes a handle lever arm data acquisition module (21), which is unidirectionally electrically connected to a second serial communication module (22) and the host computer (4). The handle displacement testing unit (3) includes a displacement sensor (31), which is unidirectionally electrically connected to a second microcontroller (32), a third serial communication module (34), and the host computer (4).
2. The test device for excavator handle mechanical properties according to claim 1, characterized in that: The handle force testing unit (1) includes a first control microcontroller operation module (13), the input and output terminals of which are electrically connected to the host computer (4) and the first microcontroller (12), respectively.
3. The test device for mechanical properties of excavator handle according to claim 1, characterized in that: The handle displacement test unit (3) includes a second control microcontroller operation module (33), the input and output terminals of which are electrically connected to the host computer (4) and the second microcontroller (32), respectively.
4. The test device for excavator handle mechanical properties according to claim 1, characterized in that: The pressure sensor is connected to the first microcontroller (12), the first microcontroller (12) is connected to the first serial communication module (14), and the first serial communication module (14) is connected to the host computer (4) via a data communication line.
5. The test device for excavator handle mechanical properties according to claim 1, characterized in that: The handle lever arm data acquisition module (21) and the second serial communication module (22) are connected via a data communication line, and the second serial communication module (22) and the host computer (4) are connected via a data communication line.
6. The test device for excavator handle mechanical properties according to claim 1, characterized in that: The displacement sensor (31) is connected to the second microcontroller (32), the second microcontroller (32) is connected to the third serial communication module (34), and the third serial communication module (34) is connected to the host computer (4) via a data communication line.
7. The test device for excavator handle mechanical properties according to claim 2, characterized in that: The first control microcontroller operation module (13) is connected to the host computer (4) and the first microcontroller (12) via an electrical connection line.
8. The test device for excavator handle mechanical properties according to claim 3, characterized in that: The second control microcontroller operating module (33) is connected to the host computer (4) and the second microcontroller (32) via an electrical connection line.
9. The test device of claim 1, wherein: The displacement sensor (31) is a laser displacement sensor.
10. The test device of claim 1, wherein: The pressure sensor is a strain gauge sensor. The strain gauge deforms as the handle is subjected to force, causing a change in resistance, which is modulated into a voltage signal based on a Wheatstone bridge circuit.