Accurate comparison measuring device for outer circle and inner hole of planet carrier
By designing a comparative measurement device that includes a measuring body and an adjustable support structure, the problems of temperature variation and reliance on operational experience in traditional measurement methods are solved, achieving efficient and stable measurement of the outer circle and inner hole of the planetary carrier, and improving the accuracy and repeatability of the measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HONGDE SPECIAL PARTS CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional measurement methods for the outer circle and inner hole of planetary carriers are easily affected by temperature changes, rely on operational experience, and result in unstable measurements and poor repeatability.
A precise comparative measurement device is adopted, which includes a measuring body, a left plane support, a right plane support, a left dial indicator holder, and a right support. The measuring body is made of carbon fiber and the adjustable support structure is combined with a dial indicator for comparative measurement, thereby reducing human error.
It improves the accuracy and repeatability of planetary carrier outer circle and inner hole measurement, adapts to planetary carriers of different sizes, reduces human interference, and enhances the scientific nature and reliability of measurement.
Smart Images

Figure CN224121849U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a precise comparative measurement device for the inner hole of the outer circle of a planetary carrier, belonging to the technical field of planetary carrier measurement equipment. Background Technology
[0002] In modern machining and precision manufacturing, accurate measurement of the geometric dimensions of parts is a crucial step in ensuring product quality. As a key transmission component, the dimensional accuracy of the planetary carrier's outer diameter and inner bore directly affects the performance and stability of the entire mechanical system. Traditional measurement methods typically employ an outside micrometer, but this method has several limitations.
[0003] First, outside micrometer measurements are easily affected by temperature changes, leading to unstable results. Second, measurement accuracy also depends on the operator's experience and skill, especially in terms of applied pressure and grip strength, which can easily cause measurement errors. Furthermore, traditional measuring tools have poor repeatability, making it difficult to maintain consistent results across multiple measurements.
[0004] Therefore, there is an urgent need for a new type of measuring device to improve the measurement accuracy and repeatability of the outer circle and inner hole of the planetary carrier and overcome the shortcomings of traditional measurement methods. Utility Model Content
[0005] To address the problems existing in the prior art, this utility model provides a precise comparative measuring device for the inner hole of the outer circle of a planetary carrier, thereby solving the aforementioned technical problems.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a precise comparison measuring device for the inner hole of the outer circle of a planetary carrier, comprising a comparison measuring device placed on the upper end face of the planetary carrier;
[0007] The comparative measurement device includes a measurement body; the measurement body is provided with a left plane support and a right plane support at its left and right ends, respectively.
[0008] A left pointer holder is installed on the measuring body located on the left side of the plane support; a right bracket is installed on the measuring body located on the right side of the plane support.
[0009] A probe holder is mounted on the left probe holder; a probe is mounted on the probe holder.
[0010] A dial indicator bracket is mounted on the right support; a dial indicator is mounted on one side of the dial indicator bracket; and an auxiliary needle is mounted on the dial indicator bracket located on the opposite side of the dial indicator.
[0011] Furthermore, the measuring body is a cylindrical structure made of carbon fiber.
[0012] Furthermore, the left and right plane supports have the same structure, including a clamping ring and a support base at the bottom; the clamping ring is fixed by a locking member through a hole; the support base is fixedly connected to the clamping ring by welding.
[0013] Furthermore, the left probe holder includes a clamping ring and a left slide rail seat located at the bottom; the probe holder is mounted on the left slide rail seat.
[0014] Furthermore, the left slide rail seat is L-shaped in general, with its horizontal end fixedly connected to the bottom of the clamp ring, and its vertical end movably fixedly connected to the probe bracket. The probe bracket has a square groove in the center for the vertical end to pass through and be tightened and fixed by a fastener.
[0015] Furthermore, the right bracket includes a clamping ring and a right slide rail seat located at the bottom; the table bracket is mounted on the right slide rail seat.
[0016] Furthermore, the right slide rail seat is L-shaped in general, with its horizontal end fixedly connected to the bottom of the clamp ring, and its vertical end movably fixedly connected to the watch bracket. The watch bracket has a square groove in the center for the vertical end to pass through and be tightened and fixed by a fastener.
[0017] The beneficial effects of this utility model are: by adopting the above technical solution, the measurement error caused by human factors is reduced, and the repeatability and accuracy of the measurement are improved; at the same time, the adjustable structure is adopted, which is convenient to adapt to planetary carriers of different sizes, facilitates disassembly, and improves the applicability of the device. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the comparative measurement device of this utility model;
[0020] Figure 3 This is a structural schematic diagram of the left dial indicator holder and its connecting parts according to this utility model;
[0021] Figure 4 This is a structural schematic diagram of the right bracket and its connecting parts of this utility model.
[0022] In the diagram: 1. Planetary carrier; 2. Comparison measuring device; 21. Measuring body; 211. Left plane support; 212. Right plane support; 213. Left needle holder; 2131. Left slide rail seat; 214. Right support; 2141. Right slide rail seat; 3. Stylus holder; 31. Stylus; 4. Dial indicator holder; 41. Dial indicator; 42. Auxiliary needle. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.
[0025] like Figure 1 , Figure 2 As shown, a precise comparative measuring device for the inner hole of the outer circle of a planetary carrier includes a comparative measuring device 2 placed on the upper end face of the planetary carrier 1.
[0026] The comparison measuring device 2 includes a measuring body 21; the measuring body 21 is provided with a left plane support 211 and a right plane support 212 at its left and right ends, respectively;
[0027] A left dial indicator holder 213 is provided on the measuring body 21 located on the left side of the left plane support 211; a right support 214 is provided on the measuring body 21 located on the right side of the right plane support 212.
[0028] A probe holder 3 is mounted on the left probe holder 213; a probe 31 is mounted on the probe holder 3.
[0029] A dial indicator 4 is mounted on the right bracket 214; a dial indicator 41 is mounted on one side of the dial indicator 4; an auxiliary needle 42 is mounted on the dial indicator 4 located on the opposite side of the dial indicator 41.
[0030] In this preferred embodiment, the measuring body 21 is a cylindrical structure made of carbon fiber. This provides excellent strength and lightweight properties, ensuring the stability and durability of the measuring device.
[0031] In this preferred embodiment, the left plane support 211 and the right plane support 212 have identical structures, which facilitates production and maintenance, while ensuring the symmetry and consistency of measurements. It includes a clamping ring and a support base located at the bottom; the clamping ring is fixed by a locking member through a hole; the support base is fixedly connected to the clamping ring by welding.
[0032] In this preferred embodiment, refer to... Figure 3 The left probe holder 213 includes a clamping ring and a left slide rail seat 2131 located at the bottom; the probe holder 3 is installed on the left slide rail seat 2131.
[0033] In this preferred embodiment, continue to refer to... Figure 3The left slide rail seat 2131 is L-shaped in general. Its horizontal end is fixedly connected to the bottom of the clamp ring, and its vertical end is movably fixedly connected to the probe bracket 3. The probe bracket 3 has a square groove in the center for the vertical end to pass through and be tightened and fixed by the fastener.
[0034] In this preferred embodiment, refer to... Figure 4 The right bracket 214 includes a clamping ring and a right slide rail seat 2141 located at the bottom; the table bracket 4 is installed on the right slide rail seat 2141.
[0035] In this preferred embodiment, continue to refer to... Figure 4 The right slide rail seat 2141 is L-shaped in general. Its horizontal end is fixedly connected to the bottom of the clamp ring, and its vertical end is movably fixedly connected to the meter bracket 4. The meter bracket 4 has a square groove in the center for the vertical end to pass through and be tightened and fixed by the fastener.
[0036] The working principle of this device is based on the concept of comparative measurement. The left dial indicator holder 213 and the right support 214 on the measuring body 21 cooperate with each other to accurately measure the outer circle and inner hole of the planetary carrier.
[0037] Installation and positioning: Before measurement, the measuring device is fixed on the upper surface of the planetary carrier 1, and the stability of the device is ensured by the left plane support 211 and the right plane support 212.
[0038] Comparison of the probe and dial indicator: The probe 31 on the left probe holder 213 and the dial indicator 41 on the right support 214 make contact with the object to be measured. When the probe contacts the outer circle or inner hole of the planetary carrier, the displacement sensed by the dial indicator is recorded in real time.
[0039] Data Reading: By observing the readings of dial indicator 41, the actual dimensions of the outer circle and inner hole of the planetary carrier can be obtained. Due to the use of a comparative measurement method, the device design minimizes human interference during the measurement process.
[0040] Adjustment function: Both the probe holder 3 and the meter holder 4 can be finely adjusted as needed to adapt to different specifications of planetary carriers, ensuring the flexibility and accuracy of measurement.
[0041] This precise comparative measurement device enables efficient and stable measurement of the outer circle and inner hole of the planetary carrier, significantly improving the scientific rigor and reliability of the measurement process.
[0042] 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 or improvements 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 precise comparative measuring device for the inner hole of the outer circle of a planetary carrier, characterized in that, Includes a comparative measurement device (2) placed on the upper surface of the planetary carrier (1); The comparative measurement device (2) includes a measurement body (21); the measurement body (21) is provided with a left plane support (211) and a right plane support (212) at its left and right ends, respectively. A left dial indicator holder (213) is provided on the measuring body (21) located on the left side of the plane support (211); a right support (214) is provided on the measuring body (21) located on the right side of the plane support (212). A probe holder (3) is installed on the left probe holder (213); a probe (31) is installed on the probe holder (3); A dial indicator bracket (4) is mounted on the right bracket (214); a dial indicator (41) is mounted on one side of the dial indicator bracket (4); an auxiliary needle (42) is mounted on the dial indicator bracket (4) on the opposite side of the dial indicator (41).
2. The precise comparative measuring device for the inner hole of the outer circle of a planetary carrier according to claim 1, characterized in that, The measuring body (21) is a cylindrical structure made of carbon fiber.
3. The precise comparative measuring device for the inner hole of the outer circle of a planetary carrier according to claim 1, characterized in that, The left plane support (211) and the right plane support (212) have the same structure, including a clamping ring and a support base at the bottom; the clamping ring is fixed by a locking member through a hole; the support base is fixedly connected to the clamping ring by welding.
4. The precise comparative measuring device for the inner hole of the outer circle of a planetary carrier according to claim 1, characterized in that, The left probe holder (213) includes a clamping ring and a left slide rail seat (2131) located at the bottom; a probe holder (3) is installed on the left slide rail seat (2131).
5. A precise comparative measuring device for the inner hole of the outer circle of a planetary carrier according to claim 4, characterized in that, The left slide rail seat (2131) is L-shaped in general. Its horizontal end is fixedly connected to the bottom of the clamp ring, and its vertical end is movably fixedly connected to the probe bracket (3). The probe bracket (3) has a square groove in the center for the vertical end to pass through and be tightened and fixed by the fastener.
6. The precise comparative measuring device for the inner hole of the outer circle of a planetary carrier according to claim 1, characterized in that, The right bracket (214) includes a clamping ring and a right slide rail seat (2141) located at the bottom; a table bracket (4) is installed on the right slide rail seat (2141).
7. A precise comparative measuring device for the inner hole of the outer circle of a planetary carrier according to claim 6, characterized in that, The right slide rail seat (2141) is L-shaped in general. Its horizontal end is fixedly connected to the bottom of the clamp ring, and its vertical end is movably fixedly connected to the watch bracket (4). The watch bracket (4) has a square groove in the center for the vertical end to pass through and be tightened and fixed by the fastener.