Detection tool for testing sealing performance of spindle box body
By designing a detection tool that includes a sealing cover, an elastic clamping device, a gas filling device, a pressure sensor, and a gas concentration sensor, the problems of low detection efficiency of spindle housing sealing performance and difficulty in locating leakage points were solved, achieving rapid and accurate leakage point location.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-16
- Publication Date
- 2026-03-20
AI Technical Summary
Existing technologies have low efficiency in detecting the sealing performance of spindle housings, making it difficult to detect minute leaks and accurately locate the leak position.
A detection tool was designed, comprising a sealing cover, an elastic clamping device, a gas filling device, a pressure sensor, a gas concentration sensor, and an exhaust pipe. By detecting changes in gas pressure and concentration in real time, and in conjunction with a positioning indicator light, the leak point can be accurately located.
It enables rapid and accurate detection of the spindle housing sealing performance, accurately locates the leakage point, and improves detection efficiency and accuracy.
Smart Images
Figure CN224019260U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mechanical sealing performance detection technical field especially relates to a detection tool for testing main shaft box body sealing performance. BACKGROUND
[0002] In the field of mechanical manufacturing, the sealing performance of the main shaft box body is crucial. Good sealing performance can prevent the leakage of lubricating oil inside the main shaft box body, the entry of external dust and impurities, and ensure the normal operation and service life of the main shaft.
[0003] Currently, for the detection of the sealing performance of the main shaft box body, the traditional detection methods are usually used, such as observing bubbles by smearing soap water, detecting pressure changes by filling gas into the box body and using pressure sensors, etc. However, these methods have the problems of low detection efficiency, difficulty in finding small leakage points, and great influence by human factors in the method of observing bubbles by smearing soap water. Moreover, simply using pressure sensors to detect pressure changes cannot accurately determine the leakage position, and the accuracy and reliability of the detection results are poor.
[0004] Therefore, it is necessary to provide a detection tool for testing the sealing performance of the main shaft box body, which can quickly and accurately detect the sealing performance of the main shaft box body and accurately locate the leakage position. SUMMARY
[0005] The utility model aims at providing a detection tool for testing the sealing performance of the main shaft box body, which solves the problems of low detection efficiency, difficulty in finding small leakage points, and inability to accurately locate the leakage position in the existing detection methods.
[0006] To achieve the above-mentioned purpose, the utility model provides a detection tool for testing the sealing performance of the main shaft box body, which comprises a sealing cover body, an elastic clamping device, a gas filling device, a pressure sensor, a gas concentration sensor, and an exhaust pipe. The inner wall of the sealing cover body is provided with the elastic clamping device around. The elastic clamping device is used to tightly adhere to the surface of the main shaft box body. The gas filling device is communicated with the sealing cover body and is used to input the required gas for detection into the sealing cover body. The pressure sensor is fixedly connected with the sealing cover body and is located on the inner wall of the sealing cover body. The gas concentration sensor has a plurality of sensors and is uniformly distributed in the interior of the sealing cover body. The exhaust pipe is arranged at the top of the sealing cover body.
[0007] The elastic clamping device comprises a fixed cylinder, a telescopic resisting rod and a compression spring, the fixed cylinder is fixedly connected with the sealing cover body and located at the bottom of the sealing cover body, the telescopic resisting rod partially extends into the inner cavity of the fixed cylinder and is slidably connected through the compression spring, one end of the compression spring is fixedly connected with the bottom of the inner cavity of the fixed cylinder, and the other end of the compression spring is fixedly connected with the bottom of the inner cavity of the telescopic resisting rod.
[0008] The elastic clamping device further comprises limiting blocks, the limiting blocks are fixedly installed on the outer sides of the telescopic resisting rod, the fixed cylinder is provided with limiting grooves, the limiting grooves are arranged on the left and right sides of the inner cavity of the fixed cylinder and matched with the limiting blocks.
[0009] The gas filling device comprises a gas storage tank, a pressure regulating valve and a filling pipeline, the gas storage tank is installed on the outer side of the sealing cover body and communicated with the sealing cover body through the filling pipeline, the pressure regulating valve is fixedly connected with the gas storage tank and located at the top of the gas storage tank, and one end of the filling pipeline penetrates through the sealing cover body and is fixedly connected with the sealing cover body.
[0010] The detection tool for testing the sealing performance of the main shaft box further comprises positioning indicator lamps, the number of the positioning indicator lamps is matched with the gas concentration sensors, and the positioning indicator lamps are installed on the outer surface of the sealing cover body and correspond to the gas concentration sensors.
[0011] The detection tool for testing the sealing performance of the main shaft box is used for placing the sealing cover body above the main shaft box to be detected, making the elastic clamping device closely adhere to the main shaft box, then filling the gas in the sealing cover body through the gas in the gas filling device, detecting the gas pressure in the sealing cover body in real time through the pressure sensor, transmitting the pressure data to the external control unit, analyzing the pressure data by the control unit, if the pressure drop does not exceed the preset threshold value within the set detection time, judging that the sealing performance of the main shaft box is good, if the pressure drop exceeds the preset threshold value, starting the gas concentration sensors by the control unit, detecting the gas concentration changes at different positions in the sealing cover body in real time, analyzing and judging the leakage position according to the data detected by the gas concentration sensors, when the gas concentration change detected by the gas concentration sensor at a position is obviously higher than that at other positions, judging that the position is the leakage point by the control unit, and the positioning indicator lamp at the corresponding position is bright, thereby improving the detection efficiency of the sealing performance of the main shaft box. BRIEF DESCRIPTION OF DRAWINGS
[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced.
[0013] Fig. 1 is the structure diagram of the detection tool for testing the sealing performance of the main shaft box body of the utility model.
[0014] Fig. 2 is the structure diagram of the detection tool for testing the sealing performance of the main shaft box body of the utility model.
[0015] Fig. 3 is the internal connection diagram of the elastic clamping device of the utility model.
[0016] In the figure: 101-sealing cover body, 102-pressure sensor, 103-gas concentration sensor, 104-exhaust pipe, 105-fixed cylinder, 106-telescopic resistance rod, 107-compression spring, 108-limiting block, 109-limiting groove, 110-gas storage tank, 111-pressure regulating valve, 112-charging pipeline, 113-positioning indicator light. DETAILED DESCRIPTION
[0017] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, the embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and can not be understood as the limitation of the utility model.
[0018] Please refer to Figs. 1 to 3 , wherein Fig. 1 is the structure diagram of the detection tool for testing the sealing performance of the main shaft box body of the utility model, Fig. 2 is the structure diagram of the detection tool for testing the sealing performance of the main shaft box body of the utility model, Fig. 3 is the internal connection diagram of the elastic clamping device of the utility model.
[0019] The utility model relates to a detection tool for testing the sealing performance of the main shaft box body: including sealing cover body 101, elastic clamping device, gas charging device, pressure sensor 102, gas concentration sensor 103, exhaust pipe 104 and positioning indicator light 113, the elastic clamping device includes fixed cylinder 105, telescopic resistance rod 106, compression spring 107 and limiting block 108, the fixed cylinder 105 has limiting groove 109, the gas charging device includes gas storage tank 110, pressure regulating valve 111 and charging pipeline 112.It can be understood that the foregoing scheme can improve the sealing performance detection efficiency of the main shaft box body.
[0020] In the embodiment, the inner wall of the sealing cover 101 is provided with the elastic clamping device, which is used for closely fitting the surface of the spindle box. The gas filling device is communicated with the sealing cover 101, and is used for inputting the required gas for detection into the sealing cover 101. The pressure sensor 102 is fixedly connected with the sealing cover 101 and is located on the inner wall of the sealing cover 101. The gas concentration sensor 103 is provided with a plurality of sensors and is uniformly distributed in the sealing cover 101. The exhaust pipe 104 is arranged at the top of the sealing cover 101.The sealing cover body 101 is a bottom open cavity structure matched with the outer shape of the spindle box, the elastic clamping devices are installed in the middle positions of the bottom four sides of the sealing cover body 101, the spindle box is tightly clamped and limited by the elastic clamping devices, the sealing connection is realized, a plurality of connecting ports are arranged on the inner side wall of the sealing cover body 101 and used for connecting the gas filling device, the pressure sensor 102, the gas concentration sensor 103 and the like, the gas filling device is communicated with the sealing cover body 101, the gas is delivered into the sealing cover body 101 according to the detection requirement, the pressure detection and the sealing detection are carried out, the pressure sensor 102 is fixedly installed in the recess on the inner side wall of the rear side of the sealing cover body 101 and used for detecting the gas pressure in the sealing cover body 101 in real time, the pressure data is transmitted to the external electrical control unit, the pressure value in the sealing cover body 101 is directly displayed on the display of the operation panel of the external control unit, the viewing is facilitated, and a plurality of gas concentration sensors 103 are evenly arranged on the inner side wall of the sealing cover body 101, the gas concentration changes of different positions in the sealing cover body 101 are detected by the gas concentration sensors 103, the collected data is transmitted to the external control unit through the data collector and the specific value is displayed on the control panel, so that the detection data is directly observed, the exhaust pipe 104 is installed on the top middle position of the sealing cover body 101 through a valve and used for discharging the gas in the sealing cover body 101 after detection; therefore, during detection, the sealing cover body 101 is first placed above the spindle box to be detected, the position of the sealing cover body 101 is adjusted, the elastic clamping devices are tightly attached to the spindle box, the gas filling device is connected to the sealing cover body 101 and firmly connected, the gas is filled into the sealing cover body 101, the gas pressure in the sealing cover body 101 is detected in real time by the pressure sensor 102, the pressure data is transmitted to the external control unit, the control unit analyzes the pressure data, if the pressure drop does not exceed the preset threshold value within the set detection time, it is judged that the sealing performance of the spindle box is good, if the pressure drop exceeds the preset threshold value, the control unit starts the gas concentration sensors 103, the gas concentration changes of different positions in the sealing cover body 101 are detected in real time, the external control unit analyzes and judges the leakage position according to the data detected by the gas concentration sensors 103, when the gas concentration change detected by the gas concentration sensor 103 at a position is obviously higher than that at other positions, the control unit judges that the position is the leakage point.
[0021] The fixed cylinder 105 is fixedly connected with the sealing cover 101 and located at the bottom of the sealing cover 101; the telescopic resistance rod 106 is partially inserted into the inner cavity of the fixed cylinder 105 and is slidably connected through the compression spring 107; one end of the compression spring 107 is fixedly connected with the inner cavity bottom of the fixed cylinder 105, and the other end of the compression spring 107 is fixedly connected with the inner cavity bottom of the telescopic resistance rod 106; the limiting blocks 108 are fixedly installed on the outer sides of the telescopic resistance rod 106; the limiting grooves 109 are arranged on the left and right sides of the inner cavity of the fixed cylinder 105 and cooperate with the limiting blocks 108. One end of the fixed cylinder 105 penetrates through the lower end adaptive through hole of the sealing cover 101, and the fixed cylinder 105 has an inner cavity from the inside of the sealing cover 101, for installing the compression spring 107 and the telescopic resistance rod 106, the telescopic resistance rod 106 is inserted into the inner cavity of the fixed cylinder 105 through the inner cavity opening end of the telescopic resistance rod 106, the fixed cylinder 105 and the telescopic resistance rod 106 are connected through the compression spring 107, and the limiting blocks 108 are fixedly arranged on the upper left and right sides of the telescopic resistance rod 106, the sliding distance of the telescopic resistance rod 106 is limited through cooperation with the limiting grooves 109 on the two sides of the inner cavity of the fixed cylinder 105, the telescopic resistance rod 106 is prevented from being separated from the fixed cylinder 105, and the telescopic resistance rod 106 is tightly attached to the spindle box through the elastic force generated by the compression spring 107 under pressure, so as to clamp the spindle box.
[0022] Secondly, the gas storage tank 110 is installed on the outer side of the sealing cover 101 and communicates with the sealing cover 101 through the filling pipeline 112; the pressure regulating valve 111 is fixedly connected with the gas storage tank 110 and located at the top of the gas storage tank 110; one end of the filling pipeline 112 penetrates through the sealing cover 101 and is fixedly connected with the sealing cover 101. The gas storage tank 110 is used for storing the gas required for detection, such as compressed air or inert gas, the pressure regulating valve 111 can adjust the gas pressure in the sealing cover 101 according to the detection requirement, and the filling pipeline 112 delivers the gas from the gas storage tank 110 to the inside of the sealing cover 101.
[0023] Meanwhile, the number of the positioning indicator lights 113 matches the number of the gas concentration sensors 103, and is installed on the outer surface of the sealing cover body 101 and corresponds to the gas concentration sensors 103. The plurality of positioning indicator lights 113 are connected in correspondence with the plurality of gas concentration sensors 103, when the gas concentration change detected by the gas concentration sensor 103 at a certain position is obviously higher than that at other positions, the external control unit judges that the position is a leakage point, and the corresponding positioning indicator light 113 is lit, thereby more clearly showing the leakage position.
[0024] When the detection tool for testing the sealing performance of the spindle box body is used, the sealing cover body 101 is placed above the spindle box body to be detected, the elastic clamping device is tightly attached to the spindle box body, then the gas in the gas filling device is filled into the sealing cover body 101, the pressure sensor 102 is used to detect the gas pressure in the sealing cover body 101 in real time, and the pressure data is transmitted to the external control unit, the control unit analyzes the pressure data, if the pressure drop does not exceed the preset threshold value within the set detection time, it is judged that the sealing performance of the spindle box body is good, if the pressure drop exceeds the preset threshold value, the control unit starts the plurality of gas concentration sensors 103, and detects the gas concentration change at different positions in the sealing cover body 101 in real time, the external control unit analyzes the data detected by each gas concentration sensor 103 to determine the leakage position, when the gas concentration change detected by the gas concentration sensor 103 at a certain position is obviously higher than that at other positions, the control unit judges that the position is a leakage point, and the corresponding positioning indicator light 113 is lit, thereby improving the detection efficiency of the sealing performance of the spindle box body.
[0025] The above disclosure is only one or more preferred embodiments of the present application, which cannot limit the scope of the present application, and those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.
Claims
1. A testing tool for testing the sealing performance of a spindle housing, characterized in that, The device includes a sealing cover, elastic clamping devices, a gas filling device, a pressure sensor, a gas concentration sensor, and an exhaust pipe. The elastic clamping devices are provided around the inner wall of the sealing cover to tightly fit the surface of the spindle housing. The gas filling device is connected to the sealing cover and is used to input the gas required for detection into the sealing cover. The pressure sensor is fixedly connected to the sealing cover and is located on the inner wall of the sealing cover. There are several gas concentration sensors, which are evenly distributed inside the sealing cover. The exhaust pipe is located at the top of the sealing cover.
2. The testing tool for testing the sealing performance of a spindle housing as described in claim 1, characterized in that, The elastic clamping device includes a fixed cylinder, a telescopic abutment rod, and a compression spring. The fixed cylinder is fixedly connected to the sealing cover and is located around the bottom of the sealing cover. The telescopic abutment rod extends into the inner cavity of the fixed cylinder and is slidably connected through the compression spring. One end of the compression spring is fixedly connected to the bottom of the inner cavity of the fixed cylinder, and the other end of the compression spring is fixedly connected to the bottom of the inner cavity of the telescopic abutment rod.
3. The testing tool for testing the sealing performance of a spindle housing as described in claim 2, characterized in that, The elastic clamping device further includes a limiting block, which is fixedly installed on the left and right sides of the outer side of the telescopic abutment; the fixed cylinder has a limiting groove, which is disposed on the left and right sides of the inner cavity of the fixed cylinder and cooperates with the limiting block.
4. The testing tool for testing the sealing performance of a spindle housing as described in claim 1, characterized in that, The gas filling device includes a gas storage tank, a pressure regulating valve, and a filling pipe. The gas storage tank is installed on the outside of the sealing cover and is connected to the sealing cover through the filling pipe. The pressure regulating valve is fixedly connected to the gas storage tank and is located at the top of the gas storage tank. One end of the filling pipe passes through the sealing cover and is fixedly connected to the sealing cover.
5. The testing tool for testing the sealing performance of a spindle housing as described in claim 1, characterized in that, The testing tool for testing the sealing performance of the spindle housing also includes positioning indicator lights. The number of positioning indicator lights matches the number of gas concentration sensors and is installed on the outer surface of the sealing cover, corresponding to the number of gas concentration sensors.