CN217032983U

CN217032983U - Test box for pneumatic actuator

Info

Publication number: CN217032983U
Application number: CN202123168616.4U
Authority: CN
Inventors: 方龙
Original assignee: Shanghai Ruikai Electronics Co ltd
Current assignee: Shanghai Ruikai Electronics Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-07-22
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses a test box for a pneumatic actuator, which comprises a box body, wherein the top of the box body is provided with a connecting component connected with the pneumatic actuator and an air transmission component connected with an air hole of the pneumatic actuator, a cavity is arranged in the box body, a transmission component connected with the pneumatic actuator is arranged in the cavity, the transmission component transmits the action of the pneumatic actuator to an indicating component arranged on the box body, and the test box enables the pneumatic actuator to obtain the same output under the normal working environment by simulating the environment the same as the pneumatic actuator, so that the result is obtained, and whether the pneumatic actuator is abraded or not is judged according to the result.

Description

Test box for pneumatic actuator

Technical Field

The utility model relates to the technical field of testing of pneumatic actuators, in particular to a test box for a pneumatic actuator.

Background art:

the pneumatic actuator is an actuating device for opening and closing or regulating a valve by using air pressure, is also called a pneumatic actuating mechanism or a pneumatic device, but is generally called a pneumatic head. Pneumatic actuators are sometimes also equipped with certain auxiliary devices. Commonly used valve positioners and hand wheel mechanisms. The valve positioner is used for improving the performance of the actuator by utilizing a feedback principle, so that the actuator can realize accurate positioning according to a control signal of the controller. The hand wheel mechanism is used for directly operating the control valve to maintain normal production when the control system has no power supply, no air supply, no output of the controller or failure of the actuating mechanism. After a pneumatic actuator is used for a long time, a rotating shaft of the pneumatic actuator can be abraded, so that the expected position cannot be reached during rotation, and therefore a testing device is needed for measuring the rotating range of the pneumatic actuator.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a test box for a pneumatic actuator, which solves the defect that a device for measuring the rotation range of the pneumatic actuator is lacked in the prior art.

The utility model provides a test box for pneumatic actuator, includes the box body, the top of box body be equipped with the coupling assembling that pneumatic actuator is connected and with the gas transmission subassembly that pneumatic actuator's gas pocket is connected, the inside cavity that is equipped with of box body is equipped with the drive assembly that pneumatic actuator connects in the cavity, drive assembly will pneumatic actuator's action transmission extremely is located on the instruction subassembly on the box body.

Further, coupling assembling include with box body fixed connection's solid fixed ring and threaded connection in the swivel becket in the solid fixed ring outside.

Furthermore, the rotating ring fixes the connecting end of the pneumatic actuator and the fixed ring through threads.

Furthermore, the gas transmission assembly comprises a plurality of connecting pipes connected with a gas pump arranged inside the box body, and a connector connected with a port of the pneumatic actuator is arranged at the end head of each connecting pipe.

Furthermore, the transmission assembly comprises a worm which is rotatably arranged in the box body and is connected with the rotating shaft of the pneumatic actuator and a worm wheel matched with the worm.

Furthermore, the upper end face of the worm is provided with a groove clamped and connected with the rotating shaft.

Furthermore, the indicating component comprises a speed-limiting wheel group connected with the worm wheel and a pointer driven by the speed-limiting wheel group.

Furthermore, the speed-limiting wheel set comprises a first gear connected with the center of the worm gear through a connecting rod and a second gear meshed with the first gear.

Further, the size of the first gear is smaller than that of the second gear, and the pointer is connected with the second gear through a connecting rod.

Furthermore, a number indicating disc is arranged on the outer side of the pointer.

The utility model has the advantages that: according to the test box for the pneumatic actuator, the pneumatic actuator is fixedly connected through the arranged connecting component, so that the pneumatic actuator is prevented from shaking or being low in position to cause inaccurate results during testing; the pneumatic actuator is connected with the port of the pneumatic actuator through the connecting pipe and the connecting head, and the air pump outputs air flow, so that the pneumatic actuator can operate; the data after the operation of the pneumatic actuator is transmitted to the indicating component through the arranged transmission component, and then the final result is output through the indicating component;

the test box simulates the same environment as the pneumatic actuator, so that the pneumatic actuator can obtain the same output under the normal working environment, the result is obtained, and whether the pneumatic actuator is abraded or not is judged according to the result.

Drawings

Fig. 1 is a schematic front view of the present invention.

FIG. 2 is a schematic view of the present invention.

Fig. 3 is a schematic structural view of the transmission assembly of the present invention.

Fig. 4 is a schematic structural view of the connecting assembly of the present invention.

FIG. 5 is a schematic structural view of a speed limiting wheel set according to the present invention.

Wherein: the device comprises a box body 1, a pneumatic actuator 2, a connecting pipe 3, a pointer 4, a number indicating disc 5, a fixed ring 6, a groove 7, a connector 8, a worm wheel 9, a worm 10, a first gear 11, a rotating shaft 12, a second gear 13 and a rotating ring 14.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1 to 5, a test box for a pneumatic actuator includes a box body 1, a connecting assembly connected to the pneumatic actuator 2 and an air delivery assembly connected to an air hole of the pneumatic actuator 2 are disposed at the top of the box body 1, a cavity is disposed inside the box body 1, a transmission assembly connected to the pneumatic actuator 2 is disposed in the cavity, and the transmission assembly transmits the motion of the pneumatic actuator 2 to an indicating assembly disposed on the box body 1.

In this embodiment, coupling assembling include with box body 1 fixed connection's solid fixed ring 6 and threaded connection in the swivel becket 14 in the solid fixed ring 6 outside, swivel becket 14 will pneumatic actuator 2's link with gu fixed ring 6 threaded connection, pneumatic actuator 2 and solid fixed ring 6 contact back, guarantee that pneumatic actuator 2 can not rock or shake in the test procedure through rotatory swivel becket 14 with pneumatic actuator 2 and solid fixed ring 6 connection.

In this embodiment, the gas transmission assembly includes and locates a plurality of connecting pipes 3 that the inside air pump of box body 1 is connected, the end department of connecting pipe 3 be equipped with the connector 8 that the port of pneumatic actuator 2 is connected, through connecting pipe 3 after the air pump operation with the air current carry to pneumatic actuator 2 inside, guarantee that pneumatic actuator 2 normally works.

In this embodiment, the transmission assembly is including rotating and locating the inside of box body 1 and with worm 10 that pneumatic actuator 2's axis of rotation 12 is connected and with worm 10 complex worm wheel 9, the up end of worm 10 be equipped with axis of rotation 12 card and the recess 7 of being connected, after worm 10 passes through recess 7 and axis of rotation 12 is connected, rethread rotating ring 14 is fixed, axis of rotation 12 just can not break away from, and axis of rotation 12 rotates back worm 10 and follows axis of rotation 12 and rotate together, and worm 10 rotates back and drives worm wheel 9 and rotate.

In this embodiment, the indicating assembly includes a speed-limiting wheel set connected to the worm wheel 9 and a pointer 4 driven by the speed-limiting wheel set, the speed-limiting wheel set includes a first gear 11 connected to the center of the worm wheel 9 through a connecting rod and a second gear 13 engaged with the first gear 11, the first gear 11 is smaller than the second gear 13 in size, the pointer 4 is connected to the second gear 13 through a connecting rod, the worm wheel 9 rotates to drive the first gear 11 to rotate, the first gear 11 drives the second gear 13 engaged with the first gear 11 to rotate, the first gear 11 is smaller than the second gear 13 in size, so that the rotation amplitude of the second gear 13 is small, and the gear ratio is designed to enable the pneumatic actuator 2 to complete a full motion, and then the second gear 13 rotates half a turn, that is, 180 degrees.

In this embodiment, the indicating disc 5 is provided on the outer side of the indicating needle 4, the angle of the indicating needle 4 after rotation can be obtained through the indicating disc 5, if the indicating needle 4 just rotates 180 degrees, the pneumatic actuator 2 to be tested meets the standard, and if the angle is less than 180 degrees or exceeds 180 degrees, the inside of the pneumatic actuator 2 to be tested may be worn, and the internal parts need to be replaced.

It will be appreciated by those skilled in the art that the utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the utility model are intended to be embraced therein.

Claims

1. The utility model provides a test box for pneumatic actuator, includes box body (1), its characterized in that, the top of box body (1) be equipped with pneumatic actuator (2) be connected coupling assembling and with the gas transmission subassembly that the gas pocket of pneumatic actuator (2) is connected, box body (1) inside is equipped with the cavity, be equipped with in the cavity with the transmission assembly that pneumatic actuator (2) are connected, transmission assembly will the action transmission of pneumatic actuator (2) extremely locates on the instruction subassembly on box body (1).

2. A test cartridge for a pneumatic actuator according to claim 1, wherein: the connecting assembly comprises a fixing ring (6) fixedly connected with the box body (1) and a rotating ring (14) in threaded connection with the outer side of the fixing ring (6).

3. A test cartridge for a pneumatic actuator according to claim 2, wherein: the rotating ring (14) fixes the connecting end of the pneumatic actuator (2) and the fixing ring (6) in a threaded manner.

4. A test cartridge for a pneumatic actuator according to claim 3, wherein: the gas transmission assembly comprises a plurality of connecting pipes (3) connected with a gas pump arranged inside the box body (1), and the end of each connecting pipe (3) is provided with a connector (8) connected with the port of the pneumatic actuator (2).

5. A cartridge for a pneumatic actuator according to claim 4, wherein: the transmission assembly comprises a worm (10) which is rotatably arranged in the box body (1) and connected with a rotating shaft (12) of the pneumatic actuator (2), and a worm wheel (9) matched with the worm (10).

6. A cartridge for a pneumatic actuator according to claim 5, wherein: and a groove (7) clamped and connected with the rotating shaft (12) is formed in the upper end face of the worm (10).

7. A cartridge for a pneumatic actuator according to claim 6, wherein: the indicating component comprises a speed-limiting wheel set connected with the worm wheel (9) and a pointer (4) driven by the speed-limiting wheel set.

8. A cartridge for a pneumatic actuator according to claim 7, wherein: the speed-limiting wheel set comprises a first gear (11) and a second gear (13), wherein the first gear (11) is connected with the center of the worm wheel (9) through a connecting rod, and the second gear (13) is meshed with the first gear (11).

9. A test cartridge for a pneumatic actuator according to claim 8, wherein: the size of the first gear (11) is smaller than that of the second gear (13), and the pointer (4) is connected with the second gear (13) through a connecting rod.

10. A test cartridge for a pneumatic actuator according to claim 9, wherein: and a number indicating disc (5) is arranged on the outer side of the pointer (4).