Torque testing device for pneumatic actuator

Abstract

The utility model discloses a pneumatic actuator torque testing device which comprises a rack, a worm gear and worm gear box and a reversing valve, a torque sensor is arranged between the worm gear and worm gear box and the pneumatic actuator, one end of the torque sensor is assembled with a worm gear of the worm gear and worm gear box, and the other end of the torque sensor is assembled with a worm gear of the worm gear and worm gear box. The other end of the torque sensor is assembled with an output shaft of the pneumatic actuator, and a torque display screen communicated with the torque sensor is further arranged on the machine frame. A hand wheel for driving a worm to rotate is arranged on the worm of the worm and gear gearbox; a connector in the pneumatic actuator is connected with a connector of the reversing valve through a pipeline, the worm gear and worm gear box has a self-locking function, torque output by the pneumatic actuator is transmitted to the torque sensor, and reading is displayed through the torque display screen. The torque testing device has the advantages that the torque testing device is more compact in structure, economic benefits are saved, maintenance is reduced, and the application range of the pneumatic actuator is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of guide products, in particular to a pneumatic actuator torque testing device. Background Art

[0002] A pneumatic actuator is a valve driving device that outputs air through an internal pipe into the actuator cavity, pushing the rack and pinion to rotate the gear shaft, thereby opening and closing the valve connected to it. With the widespread application of pneumatic actuators in the shipbuilding industry, its actual torque value needs to be clear, and the output torque of the pneumatic actuator needs to be tested to help determine the quality of the processed or assembled products. Currently, many torque testing products on the market usually use magnetic powder brakes, which are large in size, expensive, and often require maintenance, etc., and improvements need to be made. Utility Model Content

[0003] The utility model aims to provide a pneumatic actuator torque testing device with a more compact structure and lower economic cost.

[0004] The utility model provides a pneumatic actuator torque test device, comprising a frame, a worm gearbox and a reversing valve, wherein the worm gearbox is arranged on the frame, a torque sensor is arranged between the worm gearbox and the pneumatic actuator, one end of the torque sensor is assembled with a turbine of the worm gearbox, and the other end of the torque sensor is assembled with an output shaft of the pneumatic actuator, and a torque display screen connected with the torque sensor is also arranged on the frame;

[0005] The output shaft, torque sensor and turbine of the pneumatic actuator are linked to each other, and a hand wheel for driving the worm to rotate is provided on the worm of the worm gearbox, and the output shaft of the pneumatic actuator can be driven to rotate by rotating the hand wheel;

[0006] The interface in the pneumatic actuator is connected to the reversing valve interface by a pipeline, and the air source is input from the reversing valve interface into the cavity of the pneumatic actuator through the connected pipeline. The worm gearbox has a self-locking function. The torque output by the pneumatic actuator is transmitted to the torque sensor, and the reading is displayed on the torque display screen.

[0007] Preferably, a pressure reducing valve is also provided on the frame, and the pressure reducing valve can adjust the output pressure of the gas source in the pipeline.

[0008] Preferably, a support frame is provided on the frame, a fixing plate for mounting the pneumatic actuator is fixedly provided on the support frame, and a through hole for the output shaft of the pneumatic actuator to pass through is opened on the surface of the fixing plate.

[0009] Preferably, a conversion head is provided between the torque sensor and the pneumatic actuator, the torque sensor is inserted into one end of the conversion head and assembled with the conversion head, and the other end of the conversion head is assembled with the output shaft of the pneumatic actuator.

[0010] Preferably, a positioning and fixing block is provided at the bottom end of the fixing plate, a bearing is provided between the positioning and fixing block and the fixing plate, and the conversion head is close to one end of the pneumatic actuator and assembled with the bearing.

[0011] Preferably, a bottom plate is horizontally fixedly disposed on the frame, and the worm gear box is fixedly disposed on the bottom plate by bolt locking.

[0012] Preferably, a sheet metal part is provided on the peripheral side of the frame, and the torque display screen is embedded in the sheet metal part.

[0013] Preferably, a plurality of foot cups are provided at the bottom end of the frame.

[0014] From the above description of the utility model, it can be seen that the utility model has the following beneficial effects:

[0015] 1. The traditional magnetic powder brake is simplified into a worm gearbox to test the torque value of the pneumatic actuator. This makes the structure of the test device more compact, saves economic benefits, reduces maintenance, and increases the scope of use of the actuator.

[0016] 2. A pressure reducing valve is provided on the frame, through which the output pressure of the gas source in the pipeline can be adjusted, so that the torque value output by the pneumatic actuator under various pressures can be measured.

[0017] 3. A conversion head is provided between the torque sensor and the pneumatic actuator, and the two ends of the conversion head are respectively assembled between the torque sensor and the pneumatic actuator, so as to facilitate torque measurement of different pneumatic actuators. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a pneumatic actuator torque testing device according to an embodiment;

[0019] Figure 2 is a front view of a pneumatic actuator torque testing device according to an embodiment;

[0020] Figure 3 is a right side view of a pneumatic actuator torque testing device according to an embodiment;

[0021] Figure 4 is a top view of a pneumatic actuator torque testing device according to an embodiment;

[0022] Figure 5 is a rear view of a pneumatic actuator torque testing device according to an embodiment;

[0023] Figure 6 is a schematic structural diagram of a fixing plate of an embodiment;

[0024] Figure 7 It is an embodiment Figure 2 Sectional view at DD in the middle;

[0025] Figure 8 It is a cross-sectional view of the positioning and fixing block, the bearing and the conversion head of the embodiment.

[0026] Figure numerals: 1, frame; 11, base plate; 12, foot cup; 13, support frame; 14, fixing plate; 141, through hole; 15, sheet metal; 16, positioning fixing block; 17, bearing; 2, worm gearbox; 21, handwheel; 3, reversing valve; 4, torque sensor; 5, torque display screen; 6, conversion head; 7, pressure reducing valve; 8, pneumatic actuator. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the following is a summary of the technical problems, technical solutions and beneficial effects to be solved by the present invention. Figure 1-8 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] Reference Figure 1-Figure 5 A pneumatic actuator torque test device includes a frame 1, a worm gearbox 2, a reversing valve 3, a torque sensor 4 and a torque display screen 5. A bottom plate 11 is horizontally arranged on the frame 1, and the worm gearbox 2 is fixedly installed on the bottom end of the bottom plate 11. The worm gearbox 2 and the bottom plate 11 are fixed by bolt locking, which not only makes the worm gearbox 2 and the bottom plate 11 firmly fixed, but also has the advantage of easy disassembly. A hand wheel 21 is fixedly arranged on the worm of the worm gearbox 2, so that the worm can be rotated by the hand wheel 21, so that the worm drives the worm to rotate. A plurality of foot cups 12 are arranged at the bottom end of the frame 1, and the arrangement of the plurality of foot cups 12 facilitates the adjustment of the horizontal height of the frame 1 and keeps the frame 1 in a stable horizontal position.

[0029] Reference Figure 1 , Figure 6 and Figure 7A support frame 13 is fixedly arranged on the frame 1, and a fixing plate 14 is arranged on the support frame 13, and a through hole 141 is opened on the surface of the fixing plate 14; the pneumatic actuator 8 is fixedly installed on the fixing plate 14, so that the output shaft of the pneumatic actuator 8 passes through the through hole 141 of the fixing plate 14. The reversing valve 3, the torque sensor 4 and the torque display screen 5 are all arranged on the frame 1, and the torque sensor 4 and the torque display screen 5 are electrically connected. One end of the torque sensor 4 is assembled with the turbine of the worm gearbox 2, and the other end of the torque sensor 4 is assembled with the output shaft of the pneumatic actuator 8, so that the output shaft of the pneumatic actuator 8, the torque sensor 4 and the turbine are linked to each other and can rotate within the range of 0-90 degrees. In order to provide good protection for the torque display screen 5, a plurality of sheet metal parts 15 are fixedly arranged on the peripheral side of the frame 1, and the torque display screen 5 arranged on the frame 1 is enclosed by the plurality of sheet metal parts 15; the sheet metal parts 15 have the advantages of light weight, high strength and low cost, and the arrangement of the sheet metal parts 15 has the effect of electromagnetic shielding.

[0030] The interfaces on the pneumatic actuator 8 are connected to the interfaces of the reversing valve 3 through pipelines, so that the pneumatic actuator 8 is connected to the reversing valve 3. The air source is discharged from the interface of the reversing valve 3 and enters the interface on the pneumatic actuator 8 along the pipeline. The torque output by the pneumatic actuator 8 is transmitted to the torque sensor 4, so that the torque value output by the pneumatic sensor is displayed on the torque display 5. The setting of the reversing valve 3 enables the pneumatic actuator 8 to be freely switched in the opening direction or the closing direction.

[0031] Reference Figure 1 , Figure 7 and Figure 8 In order to facilitate the assembly between the torque sensor 4 and the pneumatic actuator 8, a conversion head 6 is arranged between the pneumatic actuator 8 and the torque sensor 4, and the end of the torque sensor 4 away from the worm gearbox 2 is inserted into the adapter. A positioning block 16 is fixedly arranged at the bottom end of the fixed plate 14, and a bearing 17 is arranged between the positioning block 16 and the fixed plate 14. After installation, the bearing 17 corresponds to the position of the output shaft of the pneumatic actuator 8. The other end of the conversion head 6 passes through the bearing 17 and is assembled with the output shaft of the pneumatic actuator 8. The setting of the positioning block 16 always keeps the bearing 17 in a precise position to avoid positional displacement of the bearing 17. The setting of the bearing 17 reduces the friction between the conversion head 6 and the fixed plate 14, so that when the output shaft of the pneumatic actuator 8 drives the conversion head 6 to rotate, it has a higher rotation efficiency.

[0032] By turning the hand wheel 21, the worm drives the turbine to rotate, so that the output shaft of the pneumatic actuator 8 rotates to a state of 45 degrees, and the data displayed on the torque display screen 5 is 0 by fine-tuning the hand wheel 21. Adjust the pressure of the output gas source and switch the reversing valve 3 to the direction of one end of the actuator. At this time, the gas source is input into the cavity of the pneumatic actuator 8 through the pipeline, which nominally drives the gear shaft to rotate, and the worm gear has a self-locking function, which plays a braking role. The torque output by the actuator is thus transmitted to the torque sensor 4 until the torque value on the torque display screen 5 is stable and then read out, which is the torque value output by the pneumatic actuator 8 in the opening direction under this pressure.

[0033] In order to detect the torque value output by the pneumatic actuator 8 under different pressure conditions, a pressure reducing valve 7 is provided in the pipeline between the reversing valve 3 and the pneumatic actuator 8. The pressure of the air source entering the pneumatic actuator 8 is adjusted by the pressure reducing valve 7, so as to measure the torque value output by the actuator under various pressures, thereby enriching the performance detection of the torque output by the pneumatic actuator 8.

[0034] The specific implementation principle of the embodiment of the present application is as follows: when the pneumatic actuator 8 needs to be tested for torque, the pneumatic actuator 8 is mounted on the fixing plate 14 so that the output shaft of the pneumatic actuator 8 is passed through the through hole 141 on the surface of the fixing plate 14. One end of the torque sensor 4 mounted on the frame 1 is assembled with the turbine in the worm gearbox, and the other end of the torque sensor 4 is assembled with the conversion head 6. The end of the conversion head 6 away from the torque sensor 4 is penetrated into the bearing 17 and assembled with the output shaft of the pneumatic actuator 8, so that the output shaft of the pneumatic actuator 8, the torque sensor 4 and the turbine in the worm gearbox are integrated.

[0035] The hand wheel 21 is turned to make the worm gear fixed thereto drive the turbine to rotate. During the rotation of the turbine, the output shaft of the pneumatic actuator 8 is driven to rotate through the torque sensor 4 and the conversion head 6, so that the output shaft of the pneumatic actuator 8 rotates to a state of 45 degrees, and the data displayed on the torque display screen 5 is fine-tuned by the hand wheel 21 to make it 0. When measuring the torque in the opening direction of the pneumatic actuator 8, the pressure reducing valve 7 is rotated to adjust the pressure of the air source to the required parameter value, and the reversing valve 3 is switched to the opening direction of the pneumatic actuator 8. The air source is output from the interface of the reversing valve 3 through the internal pipeline to the interface on the pneumatic actuator 8, so that the air source enters the cavity of the pneumatic actuator 8, nominally driving the output shaft to rotate, and the worm gear has a self-locking function, thereby playing a braking role, so that the torque output by the pneumatic actuator 8 is transmitted to the torque sensor 4, until the torque value is stable and the value is read on the torque display screen 5.

[0036] By adjusting the pressure reducing valve 7 to control the pressure of the air source entering the actuator, the torque value output by the pneumatic actuator 8 under various pressures can be measured. When it is necessary to measure the torque in the closing direction of the pneumatic actuator 8, it is only necessary to switch the reversing valve 3 to the closing direction. The traditional magnetic powder brake is simplified into a worm gearbox to test the torque value of the pneumatic actuator 8. The structure of the test device becomes more compact, economic benefits are saved, maintenance is reduced, and the use range of the actuator is increased.

[0037] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all protected by the utility model.

Claims

1. A pneumatic actuator torque test device, characterized in that: It includes a frame, a worm gearbox and a reversing valve, wherein the worm gearbox is arranged on the frame, a torque sensor is arranged between the worm gearbox and the pneumatic actuator, one end of the torque sensor is assembled with the turbine of the worm gearbox, and the other end of the torque sensor is assembled with the output shaft of the pneumatic actuator, and a torque display screen connected with the torque sensor is also arranged on the frame; The output shaft, torque sensor and turbine of the pneumatic actuator are linked to each other, and a hand wheel for driving the worm to rotate is provided on the worm of the worm gearbox, and the output shaft of the pneumatic actuator can be driven to rotate by rotating the hand wheel; The interface in the pneumatic actuator is connected to the reversing valve interface by a pipeline, and the air source is input from the reversing valve interface into the cavity of the pneumatic actuator through the connected pipeline. The worm gearbox has a self-locking function. The torque output by the pneumatic actuator is transmitted to the torque sensor, and the reading is displayed on the torque display screen.

2. A pneumatic actuator torque testing device according to claim 1, characterized in that: The frame is also provided with a pressure reducing valve, which can adjust the output pressure of the gas source in the pipeline.

3. A pneumatic actuator torque testing device according to claim 1, characterized in that: A support frame is arranged on the frame, a fixing plate for mounting the pneumatic actuator is fixedly arranged on the support frame, and a through hole for the output shaft of the pneumatic actuator to pass through is opened on the surface of the fixing plate.

4. A pneumatic actuator torque testing device according to claim 3, characterized in that: A conversion head is arranged between the torque sensor and the pneumatic actuator. The torque sensor is inserted into one end of the conversion head and assembled with the conversion head. The other end of the conversion head is assembled with the output shaft of the pneumatic actuator.

5. A pneumatic actuator torque testing device according to claim 4, characterized in that: A positioning and fixing block is arranged at the bottom end of the fixing plate, a bearing is arranged between the positioning and fixing block and the fixing plate, and the conversion head is close to one end of the pneumatic actuator and assembled with the bearing.

6. A pneumatic actuator torque testing device according to claim 1, characterized in that: A bottom plate is fixedly arranged horizontally on the frame, and the worm gear box is fixedly arranged on the bottom plate by bolt locking.

7. A pneumatic actuator torque testing device according to claim 6, characterized in that: A sheet metal part is arranged on the peripheral side of the frame, and the torque display screen is embedded in the sheet metal part.

8. A pneumatic actuator torque testing device according to claim 6, characterized in that: A plurality of foot cups are arranged at the bottom end of the frame.

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