Backlash measuring device for transmission equipment
Through the combination of the photoelectric self-collimator and the angle dial, the problem of low air return measurement accuracy of transmission equipment is solved, and high-precision air return angle measurement is achieved, which is suitable for special-shaped instruments of transmission equipment.
Patent Information
- Application Number
- CN202422636787.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-30
AI Technical Summary
In the prior art, the air return measurement accuracy of the transmission equipment is low and it is easy to cause errors due to sliding of the weight lanyard, so the measurement of the traditional method is not accurate enough.
The photoelectric self-collimator is used to directly measure the offset angle of the optical plate, combined with the angle dial and universal joint functions, to measure the empty return value of different angles, and calculate the empty return angle by the offset of the optical plate.
It improves the accuracy and accuracy of air return measurement, is simple to operate, and is suitable for measuring special-shaped instrument housings.
Smart Images
Figure CN223259253U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of transmission instrument testing, in particular to a backlash measuring device for transmission equipment. Background Art
[0002] Backlash is a phenomenon in which the driven wheel lags behind when the driving wheel rotates in the opposite direction. The lag angle is the backlash error angle. The main reason for backlash is the existence of side clearance in a pair of gears. Theoretically, a pair of meshing gears can be free of side clearance, but in some cases, side clearance is necessary for the normal operation of the transmission. Due to the existence of side clearance, the gear teeth can be prevented from getting stuck due to machining errors of parts. Therefore, the backlash value needs to be measured. Most simple measurements on the market measure the vertical displacement through a dial indicator, and the backlash angle can be calculated through the lever arm value and the vertical displacement. The above method requires the lever arm length to be measured in advance, and the measurement accuracy is low. If the hanging rope on the weight slips during measurement, the measured value will be too small, resulting in an error in the measurement result. Summary of the Invention
[0003] In view of this, the purpose of the utility model is to provide a backlash measurement device for transmission equipment, which directly measures the offset angle of the light plate through a photoelectric autocollimator, and the measurement results are more accurate, the values are more reliable, and the operation is simple; and an angle dial and universal joint function are added, which can measure the backlash value of the instrument at different angles.
[0004] The backlash measurement device for transmission equipment provided by the utility model adopts the following technical solutions:
[0005] A backlash measuring device for transmission equipment includes a connecting shaft with one end connected to the instrument to be measured and a measuring rod coaxially arranged on the connecting shaft. The measuring rod is rotatably arranged on the connecting shaft, and is provided with a lever arm for hanging weights. The end of the measuring rod away from the connecting shaft is provided with a light plate for measuring the backlash angle value.
[0006] Furthermore, a rotating sleeve is provided on the connecting shaft, and the rotating sleeve can be fixed on the connecting shaft, and the force arm rods are respectively provided on both sides of the rotating sleeve.
[0007] Furthermore, the lever arm is mounted on the rotating sleeve via threads.
[0008] Furthermore, a rotating truncated table is provided at the end of the connecting shaft away from the instrument to be tested, and the rotating sleeve is mounted on the rotating truncated table.
[0009] Furthermore, it also includes an angle scale connected to the instrument to be measured, and the angle scale is rotated to measure the backlash values at different angles.
[0010] To sum up, the utility model has at least one of the following beneficial effects: rotating the force arm makes the force arm horizontal, and by hanging weights on the force arm, the light plate on the measuring rod will be deflected. Using a photoelectric autocollimator to align with the light plate surface can measure the offset of the light plate, thereby calculating the angle of the light plate offset, and the measurement is more accurate. At the same time, for special-shaped instrument housings, the return value can be measured by adjusting the measuring rod. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 The structure of the embodiment of the utility model is shown in FIG. Figure 1 ;
[0012] Figure 2 The structure of the embodiment of the utility model is shown in FIG. Figure 2 .
[0013] Description of reference numerals:
[0014] 1. Connecting shaft; 2. Measuring rod; 21. Mounting slot; 3. Lever rod; 4. Light plate; 5. Rotating sleeve; 6. Rotating table; 7. Angle dial. DETAILED DESCRIPTION
[0015] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.
[0016] The following is combined with Figure 1-2 The utility model is described in further detail.
[0017] The embodiment of the utility model discloses a backlash measuring device for transmission equipment. Figure 1-2 The backlash measuring device for transmission equipment includes a connecting shaft 1 connected to the instrument to be measured at one end and a measuring rod 2 coaxially arranged on the connecting shaft 1, the measuring rod 2 is rotatably arranged on the connecting shaft 1, and a force arm 3 for hanging weights is provided on the measuring rod 2. The end of the measuring rod 2 away from the connecting shaft 1 is provided with a light plate 4 for measuring the backlash angle value. The force arm 3 is rotated to make the force arm 3 in a horizontal state. By hanging weights on the force arm 3, the light plate 4 on the measuring rod 2 will be deflected. The offset of the light plate 4 can be measured by using a photoelectric autocollimator to align with the light plate 4 surface, thereby calculating the offset angle of the light plate 4 and obtaining the backlash angle value, making the measurement more accurate. At the same time, for special-shaped instrument housings, the backlash value can be measured by adjusting the measuring rod 2.
[0018] In this embodiment, a rotating sleeve 5 is provided on the connecting shaft 1, and the rotating sleeve 5 can be fixed on the connecting shaft 1. The force arm rod 3 is respectively provided on both sides of the rotating sleeve 5. The angle of the force arm rod 3 is adjusted by rotating the rotating sleeve 5, and the rotating sleeve 5 is fixed on the rotating table 6 by using screws.
[0019] In this embodiment, the lever arm 3 is mounted on the rotating sleeve 5 via threads, which facilitates disassembly and installation of the lever arm 3 . Meanwhile, rotating the lever arm 3 can adjust the extended length of the lever arm 3 .
[0020] In this embodiment, a rotating truncated table 6 is provided at the end of the connecting shaft 1 away from the instrument to be tested, and the rotating sleeve 5 is mounted on the rotating truncated table 6 .
[0021] In this embodiment, a mounting groove 21 for mounting the light board 4 is formed at the end of the measuring rod 2 away from the connecting shaft 1 , and the light board 4 is fixed in the mounting groove 21 by screws.
[0022] In this embodiment, an angle dial 7 is further included that is transmission-connected to the instrument to be measured. The angle dial 7 is rotated to measure backlash values at different angles. By rotating the angle dial 7, backlash is generated in the instrument to be measured. After being rotated to a certain angle, the angle dial is fixed, and a weight is hung on the lever arm 3 to cause the connecting shaft 1 to deflect. At the same time, the light plate 4 is also deflected. The deflection of the light plate 4 is measured by a photoelectric autocollimator to obtain the backlash value at that angle. The backlash value at different angles can be measured by rotating the angle dial 7 to different angles.
[0023] 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. A backlash measuring device for transmission equipment, characterized in that: The invention comprises a connecting shaft (1) having one end connected to an instrument to be measured and a measuring rod (2) coaxially arranged on the connecting shaft (1); the measuring rod (2) is rotatably arranged on the connecting shaft (1); a lever arm (3) for suspending a weight is arranged on the measuring rod (2); and a light plate (4) for measuring a backlash angle value is arranged on the end of the measuring rod (2) away from the connecting shaft (1).
2. The backlash measuring device for transmission equipment according to claim 1, characterized in that: A rotating sleeve (5) is provided on the connecting shaft (1), and the rotating sleeve (5) can be fixed on the connecting shaft (1). The force arm rods (3) are respectively provided on both sides of the rotating sleeve (5).
3. The backlash measuring device for transmission equipment according to claim 2, characterized in that: The force arm (3) is mounted on the rotating sleeve (5) via threads.
4. The backlash measuring device for transmission equipment according to claim 2, characterized in that: A rotating truncated table (6) is provided at the end of the connecting shaft (1) away from the instrument to be tested, and the rotating sleeve (5) is mounted on the rotating truncated table (6).
5. The backlash measuring device for transmission equipment according to claim 1, characterized in that: It also includes an angle scale (7) that is transmission-connected to the instrument to be measured, and the angle scale (7) is rotated to measure backlash values at different angles.