A wind valve actuator test bench

Abstract

The utility model discloses a kind of air valve actuator test benches, it is related to detection equipment technical field, including workbench, several detection stations are equipped on workbench, detection station is equipped with damping mechanism, damping mechanism includes driving shaft, driven shaft, guide wheel, connecting piece and gear transmission assembly, gear transmission assembly is connected between driving shaft and driven shaft, wire reel is fixedly arranged on driven shaft, guide wheel is fixedly installed on workbench, connecting piece one end is fixedly connected with wire reel, connecting piece is around the outer periphery of wire reel and guide wheel, and another end of connecting piece is connected with counterweight, beneficial effect is: by the output shaft of air valve actuator is connected with the driving shaft on detection station, and by gear transmission assembly and counterweight simulate load torque, when different output torque specifications air valve actuator needs to be tested, only need to replace corresponding weight counterweight can complete load torque adjustment, operation is very convenient, and service life is longer.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a test bench for a damper actuator. Background Technology

[0002] A damper actuator is an actuator that controls the opening of damper blades in building ventilation, air conditioning, and fire smoke exhaust systems. Damper actuators undergo quality testing at the factory. To ensure that the actuator can open and close the valve plates of different models of dampers, output testing is also required.

[0003] According to the search, Chinese invention patent (application publication number: CN110514923A) provides a multi-functional testing bench for a damper actuator. The load torque of this solution mainly comes from the friction between the contact surfaces of the friction band and the brake band. The surface friction coefficient of the friction band and the brake band will change with surface wear. Therefore, as the number of times the device is used increases, the load torque will continuously change, which will lead to the distortion of the test results. In addition, the device has a short service life.

[0004] Therefore, it is necessary to improve the existing technology. Utility Model Content

[0005] The purpose of this utility model is to provide a test bench for a damper actuator in order to address the defects and shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A test bench for a damper actuator includes a workbench with a testing station. The testing station has a damping mechanism, which includes a drive shaft, a driven shaft, a guide wheel, a connector, and a gear transmission assembly. The gear transmission assembly connects the drive shaft and the driven shaft. The drive shaft is used for transmission connection with the output shaft of the damper actuator. A winding disc is coaxially fixed on the driven shaft. The guide wheel is fixedly mounted on the workbench, and its rotation axis is parallel to the horizontal plane. One end of the connector is fixedly connected to the winding disc, and the connector winds around the outer circumference of the winding disc and the guide wheel. The other end of the connector is connected to a counterweight, which is an independently provided load. The damping mechanism converts the weight of the counterweight into a load torque, which is transmitted to the drive shaft via the winding disc, the driven shaft, and the gear transmission assembly.

[0007] Optionally, the drive shaft is provided with a drive gear, the driven shaft is provided with a driven gear, and the gear transmission assembly is meshed between the drive gear and the driven gear. The gear transmission assembly includes multiple gears that mesh with each other.

[0008] Optionally, a connecting shaft is connected between the drive shaft and the output shaft of the damper actuator. The drive shaft is provided with a first mounting hole, and the output shaft of the damper actuator is provided with a second mounting hole. The connecting shaft is detachably installed in the first mounting hole and the second mounting hole, and the connecting shaft is in surface fit with the first mounting hole and the second mounting hole to limit the relative rotation between the drive shaft and the output shaft of the damper actuator.

[0009] Optionally, the counterweight is detachably connected to the end of the connector.

[0010] Optionally, the worktable is provided with a mounting cavity, and the damping mechanism further includes a housing, in which the drive shaft, the driven shaft and the gear transmission assembly are all installed.

[0011] Optionally, the housing is provided with at least two positioning posts, each of which protrudes from the upper surface of the worktable.

[0012] Optionally, the winding spool is provided with a connecting hole, and the connector is connected to the connecting hole.

[0013] Optionally, the worktable is provided with a through groove, and the housing has a through hole communicating with the through groove, which allows the connector to be connected to the connection hole more conveniently.

[0014] The beneficial effects of this utility model after adopting the above structure are as follows: The air valve actuator test bench of this utility model connects the output shaft of the air valve actuator to the drive shaft on the testing station, and simulates the load torque through the gear transmission assembly and the counterweight. When it is necessary to test air valve actuators with different output torque specifications, it is only necessary to replace the counterweight of the corresponding weight to complete the load torque adjustment. The operation is very convenient. Moreover, the load torque in this solution is only affected by the weight of the counterweight and will not change with the increase of the number of uses. It can maintain the testing accuracy for a long time and has a longer service life. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 yes Figure 1 A magnified structural diagram of A in the middle; Figure 3This is a top view of the structure of this utility model; Figure 4 This is a three-dimensional structural diagram of the damping mechanism of this utility model; Figure 5 This is a partial three-dimensional structural schematic diagram of the damping mechanism of this utility model; Figure 6 This is a three-dimensional structural diagram of the connecting shaft of this utility model.

[0017] Figures 1 to 6 The winning number is: 1. Workbench; 10. Mounting cavity; 100. Through groove; 101. Clearance hole; 11. Connecting seat; 2. Damping mechanism; 20. Through hole; 21. Housing; 211. Positioning pin; 22. Drive shaft; 220. First mounting hole; 221. Drive gear; 23. Driven shaft; 231. Driven gear; 24. Winding disc; 240. Connecting hole; 25. Gear transmission assembly; 3. Guide wheel; 31. Rotating shaft; 32. Bearing; 4. Connecting shaft; 5. Connecting piece; 6. Counterweight. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] It should be noted that in this utility model, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing this utility model and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] like Figures 1 to 6As shown, a test bench for a damper actuator includes a workbench 1 with several testing stations. Each testing station is equipped with a damping mechanism 2. The damping mechanism 2 includes a drive shaft 22, a driven shaft 23, a guide wheel 3, a connecting piece 5, and a gear transmission assembly 25. The gear transmission assembly 25 is connected between the drive shaft 22 and the driven shaft 23. The drive shaft 22 is used for transmission connection with the output shaft of the damper actuator (the damper actuator is prior art and will not be described in detail here; for details, please refer to the damper actuator provided in authorization announcement number: CN219994550U). A winding disc 24 and a driven gear 231 are coaxially fixed on the moving shaft 23. A driving gear 221 is provided on the driving shaft 22. A gear transmission assembly 25 is meshed between the driving gear 221 and the driven gear 231. The gear transmission assembly 25 includes multiple gears that mesh with each other. In this embodiment, the multiple gears in the gear transmission assembly 25 are speed-increasing transmissions. The total transmission ratio is such that when the driving shaft 22 rotates 90°, the driven shaft 23 rotates at least one revolution, thereby amplifying the torque generated by the counterweight 6 and transmitting it to the driving shaft 22, thereby increasing the load torque of the damping mechanism. Multiple gears mesh with each other to increase the load torque of the damping mechanism. The guide wheel 3 is fixedly installed on the workbench 1. The rotation axis of the guide wheel 3 is parallel to the horizontal plane. The guide wheel 3 is connected to the connecting seat 11 of the workbench 1 through the rotating shaft 31. The rotating shaft 31 is fixedly installed on the connecting seat 11. A bearing 32 is provided between the rotating shaft 31 and the guide wheel 3. One end of the connecting piece 5 is fixedly connected to the winding disc 24. The connecting piece 5 is wrapped around the outer periphery of the winding disc 24 and the guide wheel 3. The other end of the connecting piece 5 is connected to the counterweight 6. In this embodiment, the counterweight 6 is independently set on one side of the workbench 1 as a replaceable load supply component.

[0022] In this embodiment, the drive gear 221 is a sector gear with a central angle of 90°. Since the damper actuator can drive the valve plate to rotate at a maximum angle of 90°, and the drive gear 221 can rotate at least one revolution by rotating 90°, the driven gear 231 can rotate at least one revolution.

[0023] A connecting shaft 4 connects the drive shaft 22 and the output shaft of the damper actuator. The drive shaft 22 has a first mounting hole 220, and the output shaft of the damper actuator has a second mounting hole (not shown in the figure). The connecting shaft 4 is detachably installed in the first mounting hole 220 and the second mounting hole, and the connecting shaft 4 is in a surface fit with the first mounting hole 220 and the second mounting hole to restrict the relative rotation between the drive shaft 22 and the output shaft of the damper actuator. The drive shaft 22 and the output shaft of the damper actuator are connected by transmission through the connecting shaft 4. When the output shaft of the damper actuator rotates, it will drive the connecting shaft 4 to rotate synchronously, thereby driving the drive shaft 22 to rotate. The cross-sections of the first mounting hole 220 and the second mounting hole can be polygonal, elliptical, etc., or can be replaced by any other fit form that can restrict the relative rotation between the connecting shaft 4 and the drive shaft 22 and the output shaft of the damper actuator, such as a key connection. In this embodiment, the first mounting hole 220 has a hexagonal cross-section, and the cross-sectional shape of the connecting shaft 4 corresponds to that of the first mounting hole 220.

[0024] The counterweight 6 is detachably connected to the end of the connector 5. Therefore, when it is necessary to test the wind valve actuator with different torque, the load can be simulated by replacing the counterweight 6. This adjustment method is easy to operate, the detection accuracy will not decrease with the increase of the number of uses, and it also has a longer service life.

[0025] The worktable 1 is provided with a mounting cavity 10. The damping mechanism 2 also includes a housing 21. The drive shaft 22, driven shaft 23 and gear transmission assembly 25 are all installed in the housing 21. The drive shaft 22, driven shaft 23 and gear transmission assembly 25 can be installed into the housing 21 first, and then the housing 21 equipped with the drive shaft 22, driven shaft 23 and gear transmission assembly 25 can be installed into the mounting cavity 10 of the worktable 1 as a whole, so the installation is more convenient.

[0026] The housing 21 is provided with at least two positioning posts 211, each of which protrudes from the upper surface of the workbench 1. The positioning posts 211 can cooperate with the positioning holes on the damper actuator, thus restricting the damper actuator from moving during testing. In addition, the housing 21 is also provided with several clearance holes 101 for avoiding fasteners on the damper actuator.

[0027] The winding reel 24 is provided with a connecting hole 240. The connector 5 is connected to the connecting hole 240. In this embodiment, the connector 5 is a connecting rope. One end of the connecting rope can be tied to the connecting hole 240 to achieve fixation. The connecting rope is wound around the outer periphery of the winding reel 24 and the guide wheel 3. The other end of the connecting rope is connected to the counterweight 6.

[0028] The workbench 1 is provided with a through groove 100, and the housing 21 has a through hole 20 communicating with the through groove 100. The through hole 20 can more conveniently connect the connector 5 to the connecting hole 240. By rotating the connecting hole 240 on the winding disc 24 to the through groove 100 and the through hole 20, the connector 5 can be directly connected to the connecting hole 240 without disassembling the housing 21.

[0029] Specific operating procedure: Align the damper actuator to be tested with the positioning post 211 on the housing 21, so that the positioning hole of the damper actuator is inserted into the positioning post 211 to complete the positioning and fixing of the damper actuator on the worktable 1. Then, insert the connecting shaft 4 into the second mounting hole of the output shaft of the damper actuator and the first mounting hole 220 of the drive shaft 22 to complete the transmission connection between the damper actuator and the damping mechanism 2.

[0030] Based on the rated output torque of the damper actuator under test, select a counterweight 6 of corresponding weight and install and fix the counterweight 6 at the end of the connector 5. At this time, the gravity of the counterweight 6 is transmitted to the winding disc 24 through the connector 5, and then to the drive shaft 22 through the driven shaft 23 and the gear transmission assembly 25, which can provide a stable load torque for the output shaft of the damper actuator.

[0031] The damper actuator is started in the forward direction, causing the output shaft to rotate. This, in turn, drives the connecting shaft 4, drive shaft 22, gear transmission assembly 25, driven shaft 23, and winding reel 24 to rotate in sequence. During the rotation of the winding reel 24, the connecting piece 5 is gradually wound up, pulling the counterweight 6 upward. During the test, it is observed whether the damper actuator can drive the counterweight 6 to complete the rotation of the drive shaft 22 at the rated angle, and whether the counterweight 6 rises at a uniform speed.

[0032] After the test is completed, the damper actuator is started in reverse, causing the output shaft to rotate in the opposite direction. This, in turn, causes the connecting shaft 4, drive shaft 22, gear transmission assembly 25, driven shaft 23, and winding reel 24 to rotate in reverse in sequence. During the rotation of the winding reel 24, the connecting piece 5 gradually disengages from the winding reel 24, causing the counterweight 6 to fall at a constant speed, preparing for the next test. When it is necessary to test damper actuators with different output torque specifications, only the corresponding weight of the counterweight 6 needs to be replaced to complete the load torque adjustment. The operation is very convenient. Moreover, in this solution, the load torque is only affected by the gravity of the counterweight 6 and will not change with the increase of the number of uses, thus maintaining the test accuracy for a long time and having a longer service life.

[0033] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A test bench for a damper actuator, comprising a workbench (1), wherein the workbench (1) is provided with a testing station, characterized in that: The testing station is equipped with a damping mechanism (2). The damping mechanism (2) includes a drive shaft (22), a driven shaft (23), a guide wheel (3), a connector (5), and a gear transmission assembly (25). The gear transmission assembly (25) is connected between the drive shaft (22) and the driven shaft (23). The drive shaft (22) is used to drive the output shaft of the air valve actuator. A winding disc (24) is coaxially fixed on the driven shaft (23). The guide wheel (3) is fixedly installed on the workbench (1). The rotation axis of the guide wheel (3) is parallel to the horizontal plane. One end of the connector (5) is fixedly connected to the winding disc (24). The connector (5) passes around the outer periphery of the winding disc (24) and the guide wheel (3). The other end of the connector (5) is connected to a counterweight (6).

2. The test bench for a damper actuator according to claim 1, characterized in that: The drive shaft (22) is provided with a drive gear (221), the driven shaft (23) is provided with a driven gear (231), and the gear transmission assembly (25) is meshed between the drive gear (221) and the driven gear (231). The gear transmission assembly (25) includes multiple gears that mesh with each other.

3. The test bench for a damper actuator according to claim 1, characterized in that: A connecting shaft (4) is connected between the drive shaft (22) and the output shaft of the damper actuator. The drive shaft (22) is provided with a first mounting hole (220), and the output shaft of the damper actuator is provided with a second mounting hole. The connecting shaft (4) is detachably installed in the first mounting hole (220) and the second mounting hole, and the connecting shaft (4) is in surface fit with the first mounting hole (220) and the second mounting hole to limit the relative rotation between the drive shaft (22) and the output shaft of the damper actuator.

4. The test bench for a damper actuator according to claim 1, characterized in that: The counterweight (6) is detachably connected to the end of the connector (5).

5. A test bench for a damper actuator according to claim 1, characterized in that: The workbench (1) is provided with a mounting cavity (10), and the damping mechanism (2) also includes a housing (21). The drive shaft (22), the driven shaft (23) and the gear transmission assembly (25) are all installed in the housing (21).

6. A test bench for a damper actuator according to claim 5, characterized in that: The housing (21) is provided with at least two positioning posts (211), and the positioning posts (211) protrude from the upper surface of the worktable (1).

7. A test bench for a damper actuator according to claim 5, characterized in that: The winding spool (24) is provided with a connecting hole (240), and the connector (5) is connected to the connecting hole (240).

8. A test bench for a damper actuator according to claim 7, characterized in that: The workbench (1) is provided with a through groove (100), and the housing (21) has a through hole (20) communicating with the through groove (100).

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