Non-contact continuous detection device for transmission shaft
By designing a non-contact continuous detection device for chemical pump transmission shafts, using mobile plates, transmission screws and auxiliary mechanisms, the problems of low accuracy and time-consuming existing detection methods are solved, and efficient and accurate transmission shaft detection is achieved.
Patent Information
- Application Number
- CN202510081085.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-04-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing detection methods of chemical pump drive shafts mainly rely on visual inspection or physical contact measurement of line patrol personnel, resulting in low detection accuracy, time-consuming and labor-intensive and susceptible to interference from subjective factors.
A non-contact continuous detection device is designed, including a rack, a detection mechanism and an auxiliary mechanism. The detection mechanism realizes continuous movement of the detection head through a movable moving plate, guide rod, telescopic rod and transmission screw. The auxiliary mechanism ensures that the transmission shaft surface is clean through the dust blowing assembly and power assembly to avoid secondary adsorption of dust.
High-precision, non-contact and continuous detection of the chemical pump transmission shaft is achieved, the detection efficiency and accuracy are improved, the detection work intensity is reduced, and subjective interference is reduced.
Smart Images
Figure CN119880940A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of transmission shaft detection, in particular to a non-contact continuous detection device for a transmission shaft. Background Art
[0002] In order to ensure the safe production of green petrochemical industry and the long-term stable operation of the equipment, it is necessary to regularly inspect and repair the equipment in the chemical production field. Among them, chemical pumps are commonly used equipment in the chemical production field, and the quality of the pump operation plays an important role in production work.
[0003] At present, the measurement of chemical pump bearing deformation is the key to monitoring the performance of chemical pump drive shaft. Excessive deformation will lead to problems such as bearing wear and increased residual stress, which will greatly shorten the service life of chemical pumps. Chemical pump bearing status monitoring is mainly divided into direct measurement method and indirect measurement method. The direct measurement method refers to determining the degree of wear by analyzing the geometric shape, surface quality and changes in dimensional parameters of chemical pump bearings. At present, the traditional direct measurement of chemical pump bearing deformation still mainly relies on visual inspection or physical contact measurement by line patrol personnel. The detection process is not only time-consuming and labor-intensive, but also has low measurement accuracy and is also affected by subjective factors.
[0004] However, in recent years, with the rapid development of machine vision inspection technology, it has been widely used in surface defect inspection, quality inspection, etc. due to its non-contact, high-precision and fast detection, which can effectively reduce the workload of inspection and facilitate timely discovery of production quality problems. Therefore, the research and application of the transmission shaft measurement method for chemical pumps based on non-contact vision technology is conducive to the intelligent and visual state monitoring and fault diagnosis of chemical pumps. Summary of the invention
[0005] The object of the present invention is to provide a non-contact continuous detection device for a transmission shaft to solve the problems raised in the above background technology.
[0006] To achieve the above object, the present invention provides the following technical solutions: A non-contact continuous detection device for a transmission shaft comprises a frame and a detection mechanism, wherein the detection mechanism comprises a movable moving plate, guide rods are arranged between the two ends of the moving plate and the support frame, and a telescopic rod is also arranged between the two guide rods, and a moving cavity is opened at the bottom of the moving plate, the moving cavity is provided with a moving guide rail, a detection head is slidably connected to the moving guide rail, and a transmission screw is also arranged inside the moving cavity, the transmission screw passes through the detection head and is threadedly connected to the detection head.
[0007] As a further solution of the present invention: wherein, auxiliary mechanisms are arranged on both sides of the detection mechanism, the auxiliary mechanisms include dust blowing components arranged on both sides of the movable plate, the dust blowing components include air cylinders arranged on both sides of the movable plate, the air cylinders include a cylinder body and a piston that can move up and down inside the cylinder body to realize inflation and deflation functions, and the air outlet end at the bottom of the air cylinder extends to the interior of the detection head.
[0008] As a further solution of the present invention: wherein, the auxiliary mechanism also includes a power component slidably connected to both sides of the movable plate, the power component is slidably arranged on connecting rods on both sides of the movable plate, and a fixed column fixedly connected to the connecting rods, the top of the fixed column is fixedly connected to the cylinder, the bottom of the fixed column is rotatably connected to a rotating gear ring, and the side of the movable plate is fixedly installed with a fixed gear plate meshing with the rotating gear ring.
[0009] As a further solution of the present invention: wherein, a triggering member is fixedly installed inside the rotating gear ring.
[0010] As a further solution of the present invention: wherein, the interior of the trigger member is provided with a plurality of evenly distributed grooves and corresponding bosses, the outer periphery of the cylinder is slidably connected with a movable ring, the top of the movable ring is fixedly connected to the piston through a connecting frame, and a guide column extending to the interior of the trigger member is fixedly installed at the lower end of the movable ring.
[0011] As a further solution of the present invention: wherein, the boss is designed with arcs on both sides, and when the rotating gear ring moves left and right on the fixed gear plate, the boss can pass through the bottom of the guide column.
[0012] As a further solution of the present invention: wherein, a return spring is arranged on the moving ring.
[0013] As a further solution of the present invention: wherein, a three-way pipe mechanism is provided at the air outlet end of the air cylinder, and the three-way pipe mechanism includes a channel 1 extending to the inside of the detection head and a channel 2 extending to both sides of the detection head.
[0014] As a further solution of the present invention: wherein, a one-way valve is provided inside each of the channels.
[0015] As a further solution of the present invention: wherein, the interior of the detection head is provided with a super-depth-of-field machine vision camera lens for detection.
[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention, by opening a moving cavity at the bottom of the moving plate, the moving cavity is provided with a moving guide rail, a detection head is slidably connected to the moving guide rail, and a transmission screw is also provided inside the moving cavity, the transmission screw passes through the detection head and is threadedly connected to the detection head. When the transmission screw rotates, it can drive the detection head to slide on the moving guide rail, realize the change of the detection head position, and achieve the effect of continuous detection; 2. In the present invention, when the detection head moves to the left under the action of the transmission screw, the power component will drive the dust blowing component to work. When the dust blowing component is in the "deflation" state, the gas enters the detection head through channel one to blow the dust adhered to the chemical pump transmission shaft. The dust generated after the blowing will float near the transmission shaft. At this time, when the power component drives the dust blowing component to be in the "inhalation" state, the gas will be inhaled through channel two. At this time, the dust rushed up in the "deflation" state will be inhaled by channel two due to the suction force, thereby ensuring that in the process of detecting the transmission shaft, not only the surface of the transmission shaft can be kept clean, but also in the process of cleaning the dust, the floating dust can be prevented from being adsorbed to the transmission shaft for the second time. The effect of improving the detection accuracy is achieved; 3. In order to use the detection device more continuously, the present invention installs the second channel on the main channel detachably, and sets a filter plate at the connection between the second channel and the main channel to filter the inhaled dust. After the device is used for a period of time, the second channel can be disassembled and the dust accumulated there can be cleaned to increase the use efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the movable plate in the present invention; Figure 3 It is a schematic diagram of the detection mechanism in the present invention; Figure 4 It is a schematic diagram of the power assembly in the present invention; Figure 5 For the present invention Figure 4 The enlarged schematic diagram at A in the middle; Figure 6 It is a schematic diagram of the interior of the movable plate structure in the present invention.
[0018] The corresponding relationship between the illustrations and component names in the figure is as follows: 10. Frame; 11. Positioning plate; 12. Support frame; 20. Detection mechanism; 21. Moving plate; 22. Guide rod; 23. Telescopic rod; 24. Moving cavity; 25. Moving guide rail; 26. Detection head; 27. Transmission screw; 30. Auxiliary mechanism; 31. Dust blowing assembly; 311. Air cylinder; 3111. Cylinder body; 3112. Piston; 32. Power assembly; 321. Connecting rod; 322. Fixed column; 323. Rotating gear ring; 324. Fixed gear plate; 325. Trigger; 326. Moving ring; 327. Connecting frame; 328. Guide column; 329. Groove; 330. Boss; 40. Three-way pipe mechanism; 41. Channel 1; 42. Channel 2. DETAILED DESCRIPTION
[0019] See also Figure 1 , which is a schematic diagram of the overall structure of the present embodiment, the device comprises a frame 10, the frame 10 comprises a positioning plate 11 arranged at the bottom and a support frame 12 fixedly connected to the positioning plate 11, and a detection mechanism 20 is arranged on the support frame 12. In this embodiment, the transmission shaft to be detected can be fixed by the positioning mechanism arranged on the positioning plate 11, and then the detection of the transmission shaft can be completed by cooperating with the detection mechanism arranged on the support frame 12.
[0020] Among them, the detection mechanism 20 includes a movable moving plate 21, and guide rods 22 are arranged between the two ends of the moving plate 21 and the support frame 12, and a telescopic rod 23 is also arranged between the two guide rods 22, and the telescopic rod 23 can be driven electrically or hydraulically, and the moving plate 21 is driven by the telescopic rod 23 to complete the adjustment of the upper and lower heights on the support frame 12. After the positioning mechanism positions and fixes the transmission shaft, the moving plate 21 can be controlled by the telescopic rod 23 to approach the transmission. A moving cavity 24 is opened at the bottom of the moving plate 21, and the moving cavity 24 is provided with a moving guide rail 25, and a detection head 26 is slidably connected to the moving guide rail 25, and a transmission screw 27 is also arranged inside the moving cavity 24, and the transmission screw 27 passes through the detection head 26 and is threadedly connected to the detection head 26. When the transmission screw 27 rotates, it can drive the detection head 26 to slide on the moving guide rail 25, so as to change the position of the detection head 26 and achieve the effect of continuous detection. The specific process of detection is as follows.
[0021] S1. Measurement system: It includes a super-depth-of-field machine vision camera lens, a grating ruler, a motion module, a distance sensor, and an end face measuring axis arranged inside the detection head. When measuring the length, the measuring axis is fixed on the marble base, and the moving end measuring axis is fixed on the moving module. The moving end of the grating ruler is fixed on the moving end measuring axis, and the fixed part is installed on the marble base. It is automatically loaded and transferred to the V-block of the marble base by mechanical clamping. After the sample is in place, the moving end measuring axis pushes the sample to contact the fixed end measuring axis, and the measurement result is obtained by calculating the data of the grating ruler and the measuring axis at both ends. When measuring the diameter, it includes a super-depth-of-field machine vision camera lens, a special fixture, and a motion mechanism. Before entering the visual inspection diameter station, the pneumatic push rod keeps the distance between the end face of the pipe fitting and the camera within a suitable range to facilitate reliable image acquisition. Two sets of machine vision inner diameter measuring devices are arranged on both sides of the screw. After they are in place, the light source is evenly irradiated, and the camera collects the image of the screw diameter. The diameter calculation research is carried out using image recognition technology.
[0022] S2. Automatic data acquisition and wireless transmission system: including the design and development of four main modules: core control module, data acquisition module, data storage module and wireless transmission module. Based on the 5G network protocol, the measurement data is transmitted to the data terminal in real time to achieve the integration of data storage and calculation, ensure the authenticity and validity of the test results, and ensure the integrity and real-time nature of the digital results. Finally, the debugging and application of the automatic data acquisition and wireless transmission system are carried out.
[0023] S3. Product life monitoring system: Determine system variables according to the process requirements and control objectives of shaft products, establish mathematical models and determine control schemes, adopt networked collaborative design, and realize visualization of inspection planning, inspection execution, data collection, and monitoring data analysis. Carry out statistical analysis of the whole process data, provide various data process control analysis charts such as CPK, and understand the loss monitoring of shaft products in real time during production and operation. Carry out online data query module design, effectively trace and manage the whole process data, so as to achieve life control and safe production, etc.
[0024] In order to ensure the accuracy of the results during the detection process, the following improvements have been made: like Figures 2 to 6As shown, auxiliary mechanisms 30 are arranged on both sides of the detection mechanism 20, and the auxiliary mechanism 30 includes a dust blowing assembly 31 arranged on both sides of the movable plate 21, and the dust blowing assembly 31 includes an air cylinder 311 arranged on both sides of the movable plate 21, and the air cylinder 311 includes a cylinder body 3111 and a piston 3112 that can move up and down inside the cylinder body 3111 to realize inflation and deflation functions, and the air outlet end at the bottom of the air cylinder 311 extends to the interior of the detection head 26. When the air cylinder 311 is in a deflated state, that is, the piston 3112 moves downward inside the cylinder body 3111, the air cylinder 311 rushes gas into the interior of the detection head 26, and under the action of the gas, the dust adhered to the transmission shaft can be blown up to make it detach from the transmission shaft, thereby improving the detection efficiency and making the detection effect more accurate.
[0025] Furthermore, the auxiliary mechanism 30 also includes a power assembly 32 slidably connected to both sides of the movable plate 21, the power assembly 32 is slidably arranged on connecting rods 321 on both sides of the movable plate 21, and a fixed column 322 fixedly connected to the connecting rod 321, the top of the fixed column 322 is fixedly connected to the cylinder 3111, the bottom of the fixed column 322 is rotatably connected to a rotating gear ring 323, and the side of the movable plate 21 is fixedly installed with a fixed tooth plate 324 meshing with the rotating gear ring 323. When the detection head 26 moves under the action of the transmission screw 27, it will cooperate to drive the rotating gear ring 323 to move synchronously. During the movement of the rotating gear ring 323, it will produce self-rotation under the action of the fixed tooth plate 324.
[0026] On the basis of the above, a triggering member 325 is fixedly installed inside the rotating gear ring 323, and a plurality of evenly distributed grooves 329 and corresponding bosses 330 are arranged inside the triggering member 325. A moving ring 326 is slidably connected to the outer periphery of the cylinder 3111, and the top of the moving ring 326 is fixedly connected to the piston 3112 through a connecting frame 327, and a guide column 328 extending to the inside of the triggering member 325 is fixedly installed at the lower end of the moving ring 326. In this embodiment, the self-rotation of the rotating gear ring 323 can drive the trigger member 325 to rotate synchronously, and at the same time cooperate with the action of the upper guide column 328. When the bottom of the guide column 328 is the groove 329, the movable ring 326 is located at the bottom of the cylinder 3111. When the bottom of the guide column 328 changes from the groove 329 to the boss 330, the guide column 328 will be gradually raised due to the height change of the bottom. The raised guide column 328 will also drive the movable ring 326 on the outer side of the cylinder 3111 to move upward, thereby cooperating with the action of the connecting frame 327 to bring The movable piston 3112 moves up and down inside the cylinder 3111, and the air cylinder 311 is in the "inhalation" state; when the lower part of the guide column 328 changes from the boss 330 to the groove 329, the height is reduced, so after a return spring is set on the moving path of the movable ring 326, under the action of the return spring, the return spring will be deformed by force due to the previous movement process to generate potential energy, and then under the influence of the potential energy, the movable ring 326 returns to the origin (i.e. the lowest point of the cylinder 3111), and the air cylinder 311 is in the "deflation" state.
[0027] In order to allow the gas in the gas cylinder 311 in the "deflated" state to be flushed into the detection head 26, a three-way pipe mechanism 40 is provided at the gas outlet end of the gas cylinder 311, and the three-way pipe mechanism 40 includes a channel 1 41 extending to the inside of the detection head 26 and a channel 2 42 extending to both sides of the detection head 26, and a one-way valve is provided inside the channel.
[0028] To sum up, when the detection head 26 moves to the left under the action of the transmission screw 27, because the power component 32 will drive the dust blowing component 31 to work, when the dust blowing component 31 is in the "deflation" state, the gas enters the detection head 26 through channel 1 41, and blows the dust adhered to the chemical pump drive shaft. The dust generated after blowing will float near the drive shaft. At this time, when the power component 32 drives the dust blowing component 31 to be in the "inhalation" state, the gas will be inhaled through channel 2 42. At this time, the dust rushed up in the "deflation" state will be sucked into channel 2 42 due to the suction force, thereby ensuring that in the process of detecting the drive shaft, not only the surface of the drive shaft can be kept clean, but also in the process of cleaning the dust, the floating dust can be prevented from being adsorbed onto the drive shaft for the second time.
[0029] Furthermore, in order to better use the detection device continuously, the second channel 42 is detachably mounted on the main channel, and a filter plate is provided at the connection between the second channel 42 and the main channel to filter the inhaled dust. After the device is used for a period of time, the second channel 42 can be disassembled and the accumulated dust can be cleaned to increase the use efficiency of the device.
Claims
1. A non-contact continuous detection device for a transmission shaft, characterized in that: The invention comprises a frame (10) and a detection mechanism (20), wherein the detection mechanism (20) comprises a movable moving plate (21), a guide rod (22) is arranged on the moving plate (21), a telescopic rod (23) is arranged between two guide rods (22), a moving cavity (24) is opened at the bottom of the moving plate (21), a moving guide rail (25) is arranged in the moving cavity (24), a detection head (26) is slidably connected to the moving guide rail (25), and a transmission screw (27) is arranged inside the moving cavity (24), the transmission screw (27) passes through the detection head (26) and is threadedly connected to the detection head (26).
2. The non-contact continuous detection device for a transmission shaft according to claim 1, characterized in that: Auxiliary mechanisms (30) are arranged on both sides of the detection mechanism (20), and the auxiliary mechanisms (30) include dust blowing assemblies (31) arranged on both sides of the movable plate (21), and the dust blowing assemblies (31) include air cylinders (311) arranged on both sides of the movable plate (21), and the air cylinder (311) includes a cylinder body (3111) and a piston (3112) that can move up and down inside the cylinder body (3111) to realize inflation and deflation functions, and an air outlet end at the bottom of the air cylinder (311) extends to the interior of the detection head (26).
3. The non-contact continuous detection device for a transmission shaft according to claim 2, characterized in that: The auxiliary mechanism (30) further comprises a power assembly (32) slidably connected to both sides of the movable plate (21); the power assembly (32) is slidably arranged on connecting rods (321) on both sides of the movable plate (21); and a fixing column (322) fixedly connected to the connecting rod (321); the top of the fixing column (322) is fixedly connected to the cylinder (3111); the bottom of the fixing column (322) is rotatably connected to a rotating gear ring (323); and a fixed gear plate (324) meshingly connected to the rotating gear ring (323) is fixedly installed on the side of the movable plate (21).
4. The non-contact continuous detection device for a transmission shaft according to claim 3, characterized in that: A triggering member (325) is fixedly mounted inside the rotating gear ring (323).
5. The non-contact continuous detection device for a transmission shaft according to claim 4, characterized in that: The trigger member (325) is provided with a plurality of evenly distributed grooves (329) and corresponding bosses (330) inside, and a movable ring (326) is slidably connected to the outer periphery of the cylinder (3111), the top of the movable ring (326) is fixedly connected to the piston (3112) via a connecting frame (327), and a guide column (328) extending into the interior of the trigger member (325) is fixedly installed at the lower end of the movable ring 326.
6. The non-contact continuous detection device for a transmission shaft according to claim 5, characterized in that: The boss (330) is designed to be arc-shaped on both sides, and when the rotating gear ring (323) moves left and right on the fixed gear plate (324), the boss (330) can pass through the bottom of the guide column (328).
7. The non-contact continuous detection device for a transmission shaft according to claim 5, characterized in that: The moving ring (326) is provided with a return spring.
8. The non-contact continuous detection device for a transmission shaft according to claim 6, characterized in that: A three-way pipe mechanism (40) is provided at the gas outlet end of the gas cylinder (311), and the three-way pipe mechanism (40) comprises a channel 1 (41) extending to the interior of the detection head (26) and a channel 2 (42) extending to both sides of the detection head (26).
9. The non-contact continuous detection device for a transmission shaft according to claim 8, characterized in that: A one-way valve is arranged inside the channels.
10. The non-contact continuous detection device for a transmission shaft according to claim 1, characterized in that: The detection head (26) is provided with a super-depth-of-field machine vision camera lens for detection.