A rotary joint torque measuring device and use method thereof

Abstract

The present invention proposes a rotary joint torque measuring device and a method for using the same, comprising: a driving motor, a torque sensor, an inner chuck, an outer chuck and a fastener; the motor shaft of the driving motor is fastened to one end of the torque sensor, the other end of the torque sensor is fastened to the inner chuck, the inner chuck is used to connect the inner sleeve of the rotary joint to be measured torque; the housing of the driving motor is fixed with an outer chuck, the fastener is connected to the outer chuck, and is used to fix the outer sleeve of the rotary joint. The driving motor drives the motor shaft, the torque sensor, the inner chuck and the inner sleeve of the rotary joint to rotate, and records the peak torque at the moment of rotation, and records the rotation torque when the speed is stable; by comparing the peak torque, the rotation torque and the torque range of the normal operation of the rotary joint, it is judged whether the working state of the rotary joint is normal.

Description

Technical Field

[0001] The present invention relates to the technical field of torque measurement, and in particular to a rotary joint torque measurement device and a use method thereof. Background Art

[0002] The swivel joint is an important component for the smooth operation of the oil tank floating oil outlet device.

[0003] According to ICAO regulations, all oil tanks in airport oil depots need to be equipped with floating oil outlet devices to transfer the oil outlet from the bottom of the tank to the upper liquid surface layer. As the liquid level rises and falls, the floating oil outlet swings up and down with the rotary joint as the center. Since the rotary joint needs to be sealed and has certain pressure resistance requirements, the friction resistance torque must be overcome when rotating the rotary joint. Long-term use or untimely maintenance will increase the friction resistance between the ball and the joint raceway. The resistance torque exceeds a certain value or the joint is stuck, which will cause the floating oil outlet to inlet air, the pipeline to be emptied, and the airport oil supply to be interrupted. This type of failure has occurred many times, and the floating oil outlet device has floated out of the liquid surface or collided with the floating plate and was damaged, causing the oil tank to be unable to discharge oil, affecting the normal operation of flights. For this reason, it is necessary to study a rotary joint torque measurement device for on-site use to solve the problem that users cannot detect whether the torque of the rotary joint is abnormal during normal maintenance of the equipment.

[0004] The diameter of the rotary joint varies from DN50 to DN700, and its torque resistance varies between 5-1000Nm. The torque detection of the rotary joint is usually carried out during factory production inspection. The method adopted is to fix one end of it, and measure it with a torque meter at the other end according to different diameters and torque resistance sizes, or calculate it through force and lever arm. The size of the applied force, the speed of rotation and other human factors cause large measurement deviations. This method is more time-consuming and laborious in on-site measurement, and from the currently retrieved information, no portable rotary joint torque detection equipment that can be used on-site has been found. Summary of the invention

[0005] The purpose of the present invention is to provide a new device that can quickly detect the torque of a rotary joint on site. Users can use the detection equipment to conduct regular inspections of the rotary joint, promptly discover existing safety hazards, and take countermeasures as soon as possible to ensure the normal and stable operation of the floating oil outlet device and extend the service life of the floating oil outlet device.

[0006] The present invention proposes a design scheme for fast on-site installation of a floating oil outlet device and detection of the torque of a rotary joint by studying the measurement of the torque of the rotary joint. Specifically, the present invention proposes a rotary joint torque measurement device, which includes: a driving motor, a torque sensor, an inner chuck, an outer chuck and a fastener;

[0007] The motor shaft of the driving motor is tightly connected to one end of the torque sensor, and the other end of the torque sensor is tightly connected to the inner chuck, and the inner chuck is used to connect the inner sleeve of the rotary joint of the torque to be measured;

[0008] The housing of the driving motor is fixedly provided with an outer chuck, and the fastener is connected to the outer chuck and is used for fixing the outer sleeve of the rotary joint.

[0009] In the rotary joint torque measuring device, the driving motor is provided with a display device, and a data input end of the display device is connected to a data output end of the torque sensor.

[0010] In the rotary joint torque measuring device, the driving motor is provided with a battery or an external power supply interface for supplying power to electrical equipment in the rotary joint torque measuring device.

[0011] The rotary joint torque measuring device, wherein the battery is connected to the drive motor via a quick release.

[0012] The rotary joint torque measuring device, wherein the fastener comprises a T-shaped support rod and a steel belt, and a slide bracket with a T-shaped slot is provided in the outer chuck, the upper part of the T-shaped support rod is a T-shaped head, which is clamped in the T-shaped slot ， The lower part of the T-shaped support rod is provided with a rubber pad and a belt hole, and a steel belt passes through the belt hole to tighten and fix the outer cover of the rotary joint.

[0013] The rotary joint torque measuring device is characterized in that one end of the inner chuck is provided with a connecting plate connected to the torque sensor, and the other end is provided with a cross and a fastening bolt screwed to the flange hole of the inner sleeve, and the cross is provided with a plurality of equal circular holes with diameters corresponding to the flange holes of the inner sleeve.

[0014] In the rotary joint torque measuring device, the motor shaft of the driving motor is fastened to one end of the torque sensor via a quick-release structure, and the other end of the torque sensor is fastened to the inner chuck via a quick-release structure.

[0015] The present invention also proposes a method for using the rotary joint torque measuring device, which includes:

[0016] Step 1: The driving motor drives the motor shaft, the torque sensor, the inner chuck and the inner sleeve of the rotary joint to rotate, and records the peak torque at the moment of rotation, and records the rotation torque when the speed is stable;

[0017] Step 2: By comparing the peak torque, the rotation torque and the torque range of the normal working of the rotary joint, it is determined whether the working state of the rotary joint is normal.

[0018] The method for using the rotary joint torque measuring device is described, wherein the inner chuck is provided with a plurality of equal circular holes corresponding to the diameter of the flange hole of the inner sleeve, and the equal circular holes and the flange holes are screwed together by fastening bolts to fix the inner chuck and the inner sleeve into a rigid body.

[0019] The method for using the rotary joint torque measuring device, wherein the fastener includes a T-shaped support rod clamped in the T-shaped slot in the outer chuck, and the T-shaped support rod moves left and right in the T-shaped slot according to the diameter of the outer sleeve of the rotary joint to fix the outer sleeve and the shell into a rigid body.

[0020] It can be seen from the above scheme that the advantages of the present invention are:

[0021] Using a rotary joint torque measuring device can save time and quickly and accurately detect torque force data.

[0022] The existing rotary joint inspection needs to be returned to the original factory for inspection, which is time-consuming and labor-intensive. The rotary joint torque measuring device can quickly and accurately detect the torque of the rotary joint on site. According to the on-site inspection data, the use status of the rotary joint can be analyzed to determine whether it needs maintenance, which greatly saves time and the oil tank can be put into use earlier, bringing greater economic benefits.

[0023] Timely and accurate detection of rotary joints can also avoid some possible safety hazards, improve the safety and stability of the use of floating oil outlet devices, and add an important means to enhance the safety of airport oil supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the overall structure diagram of the present invention;

[0025] Figure 2 is a detailed structural diagram of the drive motor of the present invention;

[0026] Figure 3 Detailed structural diagram of the outer chuck of the present invention;

[0027] Figure 4 Detailed structural diagram of the inner chuck of the present invention.

[0028] Explanation of symbols:

[0029] Driving motor 1, outer chuck 2, torque sensor 3, inner chuck 4, steel belt fastener 5, rotary joint 6, display device 7, first connecting support plate 8, motor shaft 9, first sensor connecting plate 10, display screen 11, T-shaped support rod 12, rubber pad 13, belt hole 14, second connecting support plate 15, slide bracket 16, second sensor connecting plate 17, fastening bolts 18, equal circular holes 19, cross 20. DETAILED DESCRIPTION

[0030] The purpose of the present invention is to solve the problems of time-consuming and labor-intensive torque testing of rotary joints, large detection errors, and lack of on-site detection equipment. The key technologies include:

[0031] 1) Quick-release fixture for measuring torque of rotary joint;

[0032] 2) Measurement methods of electric drive, peak torque and rotational stability torque;

[0033] 3) Record, save and print test data.

[0034] In order to make the above features and effects of the present invention more clearly understood, embodiments are given below and described in detail with reference to the accompanying drawings.

[0035] The rotary joint torque measuring device proposed in the present invention is composed of a driving motor 1, an outer chuck 2, a torque sensor 3, an inner chuck 4, a steel belt fastener 5, etc. The inner chuck 4 is connected to the inner sleeve flange of the rotary joint 6 to be measured at the bottom and to the torque sensor 3 at the top. The torque sensor 3 is connected to the driving motor connecting disk at the top. After the driving motor 1 is connected to the outer chuck 2, the two are fixed to the outer surface of the rotary joint 6 to be measured by a steel belt and a fastener. The driving motor 1 and the outer chuck 2 are fixed parts. The inner chuck 4 is a rotatable part ( Figure 1 ).

[0036] Preferably, the motor shaft 9 of the drive motor 1 of the present invention is fastened to one end of the torque sensor 3 by quick release, and the other end of the torque sensor 3 is fastened to the inner chuck 4 by quick release, so as to facilitate disassembly and assembly. When rushing to the detection site, the inner chuck 4, the torque sensor 3 and the drive motor 1 can be disassembled and quickly assembled by quick release at the site. The portability of the rotary joint torque measuring device is improved.

[0037] During the test, the driving motor 1 drives the motor shaft 9, the torque sensor 3, the inner chuck 4, the inner sleeve of the rotary joint 6 to be tested, etc. to rotate together, and the peak torque is recorded at the moment of rotation. When the rotation is stable and the speed remains unchanged, the rotation torque is recorded.

[0038] The driving part of the device is as follows Figure 2 As shown, it is composed of a display device 7, a drive motor 1, a first connecting support plate 8, a motor shaft 9, and a first sensor connecting plate 10. The display device is provided with a display screen 11, which can display the peak torque and the rotation torque, and is provided with a data transmission interface. The drive motor housing is provided with a first connecting support plate 8, and the two are fixed parts; the motor shaft 9 and the first sensor connecting plate 10 thereon are rotating parts.

[0039] The outer chuck 2 described in this device, such as Figure 3As shown, it is composed of a second connecting support plate 15 corresponding to the first connecting support plate 8, a chute bracket 16, a T-shaped support rod 12, a rubber pad 13, a belt hole 14, etc. The chute bracket 16 has a T-shaped slot, and the T-shaped support rod 12 can move left and right in the T-shaped slot to fix the rotary joint 6 of different diameters. The upper part of the T-shaped support rod 12 is a T-shaped head, and the lower part is provided with a soft rubber pad 13 and a belt hole 14. The steel belt passes through the belt hole 14 and is tightened and fixed with a fixer.

[0040] like Figure 4 As shown, the inner chuck 4 described in the device is composed of a second sensor connection plate 17, a fastening bolt 18, a cross 20, and an equal circular hole 19. The fastening bolt 18 is installed in the equal circular hole 19, which is used to connect the inner chuck 4 with the inner sleeve flange of the rotary joint 6. The cross 20 is provided with an equal circular hole 19 with a diameter corresponding to the rotary joint flange hole to ensure that the inner chuck 4 and the rotary joint flange are connected in the center and accurately.

Claims

1. A rotary joint torque measuring device, characterized in that: Used for measuring the torque of the rotary joint in the floating oil outlet device of the oil tank in the oil depot, including: drive motor, torque sensor, inner chuck, outer chuck and fastener; The motor shaft of the driving motor is tightly connected to one end of the torque sensor, and the other end of the torque sensor is tightly connected to the inner chuck, and the inner chuck is used to connect the inner sleeve of the rotary joint of the torque to be measured; The housing of the driving motor is fixed with an outer chuck, and the fastener is connected to the outer chuck and is used to fix the outer sleeve of the rotary joint; One end of the inner chuck is provided with a connection plate connected to the torque sensor, and the other end is provided with a cross and a fastening bolt screwed to the flange hole of the inner sleeve, and the cross is provided with a plurality of equal circular holes with diameters corresponding to the flange holes of the inner sleeve to ensure that the flange connection between the inner chuck and the inner sleeve is aligned; the fastening bolt passes through the equal circular holes and is screwed to the flange hole of the inner sleeve, and is used for the flange connection between the inner chuck and the inner sleeve; The fastener comprises a T-shaped support rod and a steel belt, and a slide bracket with a T-shaped slot is arranged in the outer chuck, the upper part of the T-shaped support rod is a T-shaped head, which is clamped in the T-shaped slot, and the lower part of the T-shaped support rod is provided with a rubber pad and a belt hole, and the steel belt passes through the belt hole to tighten and fix the outer sleeve of the rotary joint.

2. The rotary joint torque measuring device according to claim 1, characterized in that: The driving motor is provided with a display device, and a data input end of the display device is connected to a data output end of the torque sensor.

3. The rotary joint torque measuring device according to claim 1, characterized in that: The driving motor is provided with a battery or an external power supply interface for supplying power to the electrical equipment in the rotary joint torque measuring device.

4. The rotary joint torque measuring device according to claim 3, characterized in that: The battery is connected to the drive motor via a quick release.

5. The rotary joint torque measuring device according to claim 1, characterized in that: The motor shaft of the driving motor is fastened to one end of the torque sensor through a quick-release structure, and the other end of the torque sensor is fastened to the inner chuck through a quick-release structure.

6. A method for using the rotary joint torque measuring device according to any one of claims 1 to 5, characterized in that: Used for measuring the torque of the rotating joint in the floating oil outlet device of the oil tank in the oil depot, including: Step 1: The driving motor drives the motor shaft, the torque sensor, the inner chuck and the inner sleeve of the rotary joint to rotate, and records the peak torque at the moment of rotation, and records the rotation torque when the speed is stable; Step 2: By comparing the peak torque, the rotation torque and the torque range of the normal working of the rotary joint, it is determined whether the working state of the rotary joint is normal.

7. The method for using the rotary joint torque measuring device according to claim 6, characterized in that: The inner chuck is provided with a plurality of equal circular holes corresponding to the diameter of the flange hole of the inner sleeve. The circular holes and the flange holes are screwed together by fastening bolts to fix the inner chuck and the inner sleeve into a rigid body.

8. The method for using the rotary joint torque measuring device according to claim 6, characterized in that: The fastener comprises a T-shaped support rod clamped in the T-shaped slot in the outer chuck. The T-shaped support rod moves left and right in the T-shaped slot according to the diameter of the outer sleeve of the rotary joint to fix the outer sleeve and the shell into a rigid body.

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