CN110514923B - Multifunctional detection test bed for air valve actuator - Google Patents
Multifunctional detection test bed for air valve actuator Download PDFInfo
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- CN110514923B CN110514923B CN201910673090.3A CN201910673090A CN110514923B CN 110514923 B CN110514923 B CN 110514923B CN 201910673090 A CN201910673090 A CN 201910673090A CN 110514923 B CN110514923 B CN 110514923B
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The invention discloses a multifunctional detection test bed for an air valve actuator, which comprises a box body, wherein the front side of the box body is provided with an installation panel; a mounting panel having at least one station for mounting a damper actuator; the main shaft is arranged on the shaft hole of the mounting panel through a bearing; the damper is positioned in the box body and comprises a mandrel, and the mandrel is statically connected with the main shaft; the L-shaped rod comprises a rotating arm and a swinging arm which are perpendicular to each other, and the end part of the rotating arm is arranged at one end of the mandrel, which is far away from the main shaft, and rotates synchronously with the mandrel; the proximity switch faces to the initial position of the L-shaped rod swing arm; the controller is connected with the proximity switch circuit; and the counter is used for displaying the reciprocating swinging times of the L-shaped rod swinging arm collected by the proximity switch. The multifunctional detection test bed for the air valve actuator can be used for simultaneously detecting actuators of different brands, different specifications and different torques, and can be used for singly or simultaneously testing the control performance, the feedback performance, the load performance and the operation stability of the actuators.
Description
Technical Field
The invention relates to instrument and meter detection equipment, in particular to a multifunctional detection test bed for an air valve actuator.
Background
Common power sources of the air valve actuators are electric and pneumatic, and the electric actuators are convenient to supply power, so that the market share is the vast majority, and therefore the air valve actuators are all electric air valve actuators.
The function of the air valve actuator is as follows: according to the change of the input signal, the internal driving motor rotates positively and negatively, and the motor torque is amplified through the reduction gearbox to drive the air valve to rotate. And simultaneously, outputting a full-open in-place signal and a full-close in-place signal of the air valve.
The current application situation of the air valve actuator is as follows: the main functions of the air valve actuators at home and abroad are the same, and the structure and the appearance size are not greatly different; the difference lies in different brands and different types of actuators with different output torques.
The air valve manufacturer has a large demand on the air valve actuator, generally, different brands and models of actuators need to be assembled due to different requirements of customers, and therefore the difficulty in inspecting the actuators by the air valve manufacturer is increased. The volume is large, the models and the specifications are different, and particularly, the long-term operation stability of the actuator is not detected well, so that the quality of the electric air valve cannot be ensured. Therefore, the air valve manufacturer is very important for detecting the long-term operation stability (whether each stroke can be fully opened in place or fully closed in place according to an input signal and the fully opened in place signal and the fully closed in place signal are fed back and output) of the air valve actuator under the condition of the nominal output torque.
At present, the long-term operation stability of the air valve actuator can only be detected one by one, and the load method is that a main shaft is clamped by a clamp holder of the air valve actuator, then a lifting rope is wound on the main shaft, and the lifting rope is lapped on a fixed pulley. And according to different nominal moments of the air valve actuator, different weights are hoisted at the other end of the lifting rope to be matched with the nominal value. The actuator drives the main shaft to rotate to perform a hoisting action, which is equivalent to the effect that the air valve actuator is loaded in a rotating manner. The input signal is manually changed to control the action of the air valve actuator, whether the actuator runs in place or not is observed, and whether the feedback signal is normal or not is measured. The method is time-consuming and labor-consuming, has extremely low efficiency, and can only carry out spot check on the actuator in the practical situation that an air valve manufacturer has low spot check rate. In addition, the test equipment for adding the code through the fixed pulley occupies a large space, has low operation efficiency and is unstable in load. Moreover, the test structure can only load the air valve actuator in a one-way mode. And thus only the one-way load performance of the actuator can be tested.
Disclosure of Invention
Aiming at the problem that efficiency is low when the operation stability of the air valve actuator is detected through manual operation at present pointed out in the background art, the invention aims to provide the multifunctional detection test bed for the air valve actuator, which can automatically detect the operation stability of the air valve actuator.
The technical purpose of the invention is realized by the following technical scheme:
a multifunctional detection test bed for an air valve actuator comprises a box body, wherein a mounting panel is arranged on the front side of the box body;
the mounting panel is provided with at least one station for mounting the air valve actuator, and an axle hole is formed in the clamp holder window corresponding to the air valve actuator; the main shaft is arranged on the shaft hole of the mounting panel through a bearing and penetrates through the mounting panel;
the damper is positioned in the box body and comprises a mandrel, and the mandrel is statically connected with the main shaft;
the L-shaped rod comprises a rotating arm and a swinging arm which are perpendicular to each other, and the end part of the rotating arm is arranged at one end of the mandrel, which is far away from the main shaft, and rotates synchronously with the mandrel;
the proximity switch faces to the initial position of the L-shaped rod swing arm;
the controller is connected with the proximity switch circuit and receives the electric signal of the proximity switch;
and the counter is connected with the controller circuit and is used for displaying the reciprocating swinging times of the L-shaped rod swinging arm collected by the proximity switch.
Preferably, the damper further comprises a friction band wrapped over the mandrel;
the suspension rod is parallel to the axis of the mandrel;
the hinge shaft is fixedly connected to the mounting panel and is parallel to the suspension rod;
one end of the braking belt is coiled on the hinge shaft, the other end of the braking belt is coiled on a suspension rod, and the braking belt is wrapped on the mandrel coated with the friction belt through suspension installation of the suspension rod and the hinge shaft;
the load screw is vertically connected with the suspension rod to form a T-shaped structure;
the load nut is in threaded connection with the load screw;
the distance between the load nut and the top surface of the box body is unchanged in the rotating process of the load nut, and the load nut is rotated to enable the load screw rod to move along the axial direction of the load screw rod, so that the pretightening force between the brake belt and the friction belt is changed.
Preferably, a long hole is formed in the mounting panel, and the length direction of the long hole is opposite to the opening of the clamping groove of the bottom plate of the air valve actuator; the back side of the installation panel is provided with a pin retaining sleeve corresponding to the long hole, the opening width of the pin retaining sleeve is larger than that of the long hole, the pin retaining sleeve is internally hoisted through a spring and is a step shaft, the part with the larger diameter is limited in an open slot of the pin retaining sleeve, and the part with the smaller diameter penetrates through the long hole to protrude out of the installation panel.
Preferably, the travel switch is a magnetic proximity switch, and a magnet is mounted at the end of the swing arm.
Preferably, the mounting panel is disposed obliquely.
Preferably, a polygonal groove is formed in a connecting section of the spindle and the mandrel, a polygonal joint is machined on the mandrel corresponding to the polygonal groove, and the polygonal joint is inserted into the polygonal groove to achieve static connection of the mandrel and the spindle.
Preferably, the damper further comprises a guide block, the guide block is fixedly connected with the mounting panel, a round hole is formed in the guide block, and the load screw penetrates through the round hole and is respectively connected with the load nut and the suspension rod.
Preferably, the load nut is a threaded sleeve, a connecting rod is fixedly connected above the threaded sleeve, and the connecting rod penetrates out of the top surface of the box body and is connected with a hand wheel; a fixed mounting gland is arranged in a matching annular gap between the connecting rod and the top surface of the box body, and the connecting rod is assembled on an inner ring of the gland through a bearing.
Preferably, the full-open-position feedback signal indicator lamp and the full-closed-position feedback signal indicator lamp are arranged on the mounting panel.
Preferably, the device further comprises a time adjustment potentiometer connected with the controller circuit.
In conclusion, the invention has the following beneficial effects:
the multifunctional detection test bed for the air valve actuator can be used for simultaneously detecting actuators of different brands, different specifications and different torques, and can be used for singly or simultaneously testing the control performance, the feedback performance, the load performance and the operation stability of the actuators. The structure of the damper is convenient for adjusting load moment, the size of the braking mechanism is greatly reduced, and a plurality of actuators with different specifications can be detected at the same time.
Drawings
FIG. 1 is a schematic overall structure diagram of a multifunctional testing stand for an air valve actuator according to the present invention;
FIG. 2 is a rear view of the multi-functional test stand for the air valve actuator of the present invention;
FIG. 3 is a schematic structural view of a multifunctional testing stand for an air valve actuator showing an air valve actuator mounting station according to the present invention;
FIG. 4 is a schematic structural diagram of a damper of the multifunctional test bed for the air valve actuator according to the present invention;
FIG. 5 is a schematic diagram of the matching relationship between a damper and a travel switch of the multifunctional testing stand for the air valve actuator according to the invention;
FIG. 6 is a schematic view of an assembly structure of a stop pin sleeve and a stop pin of the multifunctional test bed for the air valve actuator according to the present invention;
FIG. 7 is an enlarged view of a portion A of FIG. 3;
FIG. 8 is an electrical schematic diagram of the multi-functional test stand for testing the actuator of the air valve of the present invention;
FIG. 9 is a schematic diagram of the circuit structure of the power switch and the manual/automatic transfer switch in FIG. 8;
FIG. 10 is a schematic diagram of an automatic control module of the damper actuator of FIG. 8 and its peripheral circuits;
fig. 11 shows a schematic connection relationship between the air valve actuator and the power supply circuit, the control circuit and the feedback circuit, taking # 1 air valve actuator as an example.
In the figure, 1, a box body; 2. installing a panel; 3. an air valve actuator; 4. a main shaft; 5. a counter; 6. a hand wheel; 7. a long hole; 8. a time adjustment potentiometer; 9. a manual switch valve control knob; 10. a travel switch; 11. an L-shaped rod; 12. a power distribution cabinet; 13. a manual/automatic transfer switch; 14. fully opening the feedback signal indicator lamp in place; 15. a full-off in-place feedback signal indicator lamp; 16. a load screw; 17. a load nut; 18. a suspension rod; 19. a hinge axis; 20. a braking band; 21. a friction belt; 22. a gland; 23. a polygonal joint; 24. a guide block; 25. a mandrel; 26. a pin blocking sleeve; 27. a stop pin; 28. reaming; .
In an electrical schematic diagram, DS1, DS3, DS5, DS7, DS9 and DS11 are full-open-position feedback signal indicator lamps; DS2, DS4, DS6, DS8, DS10 and DS12 are all-off bit feedback signal indicator lamps; S1-S6 are manual switch valve control knobs; KA1-KA4 are all 4-way relay modules; r1 is a time adjustment potentiometer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in FIG. 1, the maximum test stations of the test bench are 6, 6 air valve actuators 3 can be simultaneously tested, and the number of the stations can be increased according to actual test requirements. The structure of the detection test bed is as follows:
referring to fig. 1 and 2, a multifunctional test bed for a damper actuator comprises:
the refrigerator comprises a refrigerator body 1, wherein the front side of the refrigerator body 1 is provided with an installation panel 2;
the mounting panel 2 is provided with at least one station for mounting the air valve actuator 3, and an axle hole is formed corresponding to the clamp holder window of the air valve actuator 3;
a main shaft 4 mounted on the shaft hole of the mounting panel 2 through a bearing and penetrating through the mounting panel 2;
the damper is positioned in the box body 1 and comprises a mandrel 25, and the mandrel 25 is statically connected with the main shaft 4;
the L-shaped rod 11 comprises a rotating arm and a swinging arm which are perpendicular to each other, wherein the end part of the rotating arm is arranged at one end of the mandrel 25, which is far away from the main shaft 4, and rotates synchronously with the mandrel 25;
a proximity switch towards the starting position of the swing arm of the L-shaped lever 11;
the controller (namely, the automatic control module of the air valve actuator in the figures 8 and 10) is connected with the proximity switch circuit and receives the electric signal of the proximity switch;
and the counter 5 is connected with the controller circuit and is used for displaying the reciprocating swinging times of the swinging arm of the L-shaped rod 11 acquired by the proximity switch.
With particular reference to fig. 4 and 5, the damper further comprises:
a friction belt 21 coated on the mandrel 25;
a suspension rod 18 parallel to the axis of the mandrel 25;
the hinge shaft 19 is fixedly connected to the mounting panel 2 and is parallel to the suspension rod 18;
a braking band 20, one end of which is coiled on the hinge shaft 19, the other end of which is coiled on a suspension rod 18, and the braking band is wrapped on a mandrel 25 coated with a friction band 21 through the suspension installation of the suspension rod 18 and the hinge shaft 19;
the load screw 16 is vertically connected with the suspension rod 18 to form a T-shaped structure;
a load nut 17 threadedly connected to the load screw 16;
the distance between the load nut 17 and the top surface of the box body 1 is unchanged in the rotating process, the load screw 16 moves along the axial direction of the load nut 17 through rotation, and the pre-tightening force between the brake belt 20 and the friction belt 21 is further changed.
Referring to fig. 3 and 7, a long hole 7 is formed in the mounting panel 2, and the length direction of the long hole 7 is opposite to the opening of the clamping groove of the bottom plate of the air valve actuator 3; a pin retaining sleeve 26 (see fig. 6) is mounted on the back side of the mounting panel 2 corresponding to the long hole 7, the opening width of the pin retaining sleeve 26 is larger than that of the long hole 7, a spring (not shown in the figure) is used for hoisting a pin retaining 27 in the pin retaining sleeve 26, the pin retaining 27 is a stepped shaft, the part with the larger diameter is limited in the open groove of the pin retaining sleeve 26, and the part with the smaller diameter passes through the long hole 7 and protrudes out of the mounting panel 2. Through the deformable characteristic of spring, the backing pin 27 can slide along backing pin cover 26 to adapt to the blast gate executor 3 of equidimension not and install on the blast gate executor 3 station of mounting panel 2, thereby can both can detect the blast gate executor 3 of the same model, size, brand on a test bench, can also detect the blast gate executor 3 of different models, size, brand simultaneously. In addition, in order to facilitate the assembly of the stop pin 27, the upper end of the elongated hole 7 is provided with a counterbore 28 having a diameter larger than the diameter of the boss of the stop pin 27 in the stop pin bushing 26.
Referring to fig. 5, the travel switch 10 is a magnetic proximity switch, and a magnet is mounted on an end of the swing arm.
Referring to fig. 1 and 3, the cabinet 1 is disposed to be inclined with respect to the lower distribution cabinet 12, so that the installation panel 2 is disposed to be inclined at the front side of the cabinet 1. The mounting panel 2 which is obliquely arranged is convenient for rapidly assembling the air valve actuator 3 on a test bed, and the static connection relation between the main shaft 4 and the mandrel 25 can be firmer by means of the self gravity, so that the connection between the main shaft 4 and the mandrel 25 cannot be loosened due to the rotation of the main shaft 4; meanwhile, the lower stop pin 27 can be matched to well limit the synchronous rotation of the air valve actuator 3 along with the rotation of the main shaft 4.
Referring to fig. 4, a polygonal groove is formed at a connecting section of the spindle 4 and the mandrel 25, a polygonal joint 23 is formed on the mandrel 25 corresponding to the polygonal groove, and the polygonal joint 23 is inserted into the polygonal groove to realize static connection of the mandrel 25 and the spindle 4. The connecting mode of the main shaft 4 and the mandrel 25 facilitates the quick assembly and disassembly of the air valve actuator 3. Because the stop pin 27 only limits the circumferential rotation of the air valve actuator 3, and the spindle 4 and the spindle 25 adopt the connection mode of the polygonal joint 23 without limiting the axial movement of the air valve actuator 3 along the spindle 4, the assembly of the polygonal joint 23 and the groove and the clamping relation of the stop pin 27 and the air valve actuator 3 can realize the quick assembly and disassembly of the air valve actuator 3 on the detection test bed.
Referring to fig. 4 and 5, the damper further includes a guide block 24, the guide block 24 is fixedly connected to the mounting panel 2, a circular hole is formed in the guide block 24, and the load screw 16 penetrates through the circular hole and is connected to the load nut 17 and the suspension rod 18, respectively.
The load nut 17 is a threaded sleeve, a connecting rod is fixedly connected above the threaded sleeve, and the connecting rod penetrates out of the top surface of the box body 1 and is connected with a hand wheel 6; a gland 22 is fixedly arranged in a matching annular gap between the connecting rod and the top surface of the box body 1, and the connecting rod is assembled on the inner ring of the gland 22 through a bearing.
Referring to fig. 1 and 3, a full-on-position feedback signal indicator lamp 14 and a full-off-position feedback signal indicator lamp 15 are further included on the mounting panel 2. When the fully-open-in-place feedback signal indicator lamp 14 and the fully-closed-in-place feedback signal indicator lamp 15 are used, the fully-open-in-place feedback signal indicator lamp and the fully-closed-in-place feedback signal indicator lamp are required to be respectively communicated with a fully-open-in-place wiring terminal and a fully-closed-in-place wiring terminal of a main control chip of the air valve actuator 3, and the fully-open-in-place feedback signal indicator lamp and the fully-closed-in-place feedback signal indicator lamp are used for displaying whether the air valve actuator 3 which is currently detected is fully opened in place or fully closed in place.
And a time adjustment potentiometer 8 which is connected with the controller circuit. The time adjusting potentiometer 8 achieves the purpose of adjusting the detection time by changing the resistance value. Specifically, a plurality of gears are arranged, and the resistance value of the time adjusting potentiometer 8 is from 0 to the maximum value and corresponds to 20 seconds to 180 seconds, so that the air valve actuator 3 with the full stroke operation time within 20 seconds to 180 seconds can be detected.
The electrical principle of the test stand is shown in fig. 8. In addition, in order to show the electrical principle more clearly, the circuit structure of the power switch and the manual/automatic transfer switch 13 part in the test stand is shown separately in fig. 9; the automatic control module and the peripheral circuit structure of the air valve actuator are shown separately in fig. 10; taking the # 1 air valve actuator as an example, the circuit structure of the air valve actuator, the power supply circuit, the control circuit and the feedback circuit is shown separately in fig. 11.
When the manual/automatic change-over switch 13 is switched to manual operation, the manual switch valve control knobs 9 corresponding to each air valve actuator 3 are turned on, the installation stations of the air valve controller are 6 in the embodiment, and therefore the corresponding manual switch valve control knobs 9 are also 6, i.e., S1-S6 in the figure. The manual switch valve control knob 9 is respectively connected with the control signal wiring terminal of the main control chip of the corresponding air valve controller, and is used for controlling the starting and stopping of the air valve controller.
During manual testing, the load moment is adjusted according to the parameters of the air valve actuator 3 on the corresponding station, the manual/automatic change-over switch 13 is placed in a manual gear, the corresponding air valve actuator 3 is controlled to be switched on and off through S1-S6, and when the air valve actuator 3 runs in place, the corresponding feedback indicator lamp is turned on.
When the manual/automatic change-over switch 13 is switched to automatic, a relay for controlling the starting and stopping of the air valve actuator 3 is switched on, and the starting and stopping of the air valve controller 3 are controlled through the relay. In fig. 8, each output of KA1 and KA2 is connected to the start control terminal of one of the dampers 3, and each output of KA3 and KA4 is connected to the stop control terminal of one of the dampers 3. Theoretically, 4 relay modules with 4 paths of KA1-KA4 can simultaneously control the starting and stopping of the 8 typhoon valve actuators 3.
During automatic testing, the total operation time of the corresponding air valve actuator 3 is set through the time adjusting potentiometer R1. The automatic control module of the air valve actuator automatically operates, the operating time of the air valve actuator 3 in the detection process is converted according to the resistance value of the time adjusting potentiometer R1, and the air valve actuator 3 is controlled to automatically operate according to the time automatic switching forward and reverse control instruction. In normal operation, the air valve actuator 3 counts once every operating period and the counter 5 is displayed on the display dial, and the full-open-in-place feedback signal indicator lamp 14 and the full-close-in-place feedback signal indicator lamp 15 are sequentially lighted at full-open and full-close positions.
If a certain air valve actuator 3 is damaged, if the operation is not in place, the feedback indicator lamp is not on, meanwhile, the frequency counter 5 does not count, and the display times are not changed. The reading of the display dial is the running period number when the actuator is damaged.
The working process of the detection test bed is as follows:
1. the air valve actuator 3 is placed on an installation station of the detection test bed, and the main shaft 4 and the clamp holder of the air valve actuator 3 are assembled and fixed before installation.
2. And adjusting the load moment of the damper according to the nominal moment of the air valve actuator 3 on the corresponding station. During adjustment, the hand wheel 6 is rotated to tighten the brake band 20, the brake band 20 compresses the friction band 21, the pre-tightening force of the hand wheel 6 is measured by a torque wrench, and the torque of the torque wrench is set to be the nominal torque of the air valve actuator 3.
3. And according to the selected detection mode (manual/automatic), the air valve actuator 3 automatically operates after being electrified, and whether the related performance of the detected air valve actuator 3 is qualified or not is displayed according to the fully-open in-place feedback signal indicator lamp 14, the fully-closed in-place feedback signal indicator lamp 15 and the counter 5. The air valve actuator 3 which is unqualified in detection can be taken down from the installation station at any time and replaced with a new air valve actuator 3, and the detection of other stations is not influenced.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (9)
1. A multifunctional detection test bed for an air valve actuator is characterized by comprising
The refrigerator comprises a refrigerator body (1), wherein the front side of the refrigerator body (1) is provided with an installation panel (2);
the mounting panel (2) is provided with at least one station for mounting the air valve actuator (3), and the shaft hole is formed corresponding to the clamp holder window of the air valve actuator (3);
a main shaft (4) which is mounted on the shaft hole of the mounting panel (2) through a bearing and penetrates through the mounting panel (2);
the damper is positioned in the box body (1) and comprises a mandrel (25), and the mandrel (25) is statically connected with the main shaft (4);
the damper further includes:
a friction belt (21) coated on the mandrel (25);
the suspension rod (18) is parallel to the axis of the mandrel (25);
the hinge shaft (19) is fixedly connected to the mounting panel (2) and is parallel to the suspension rod (18);
the braking belt (20) is wound on the hinge shaft (19) at one end and wound on a suspension rod (18) at the other end, and is wrapped on a mandrel (25) coated with the friction belt (21) through suspension installation of the suspension rod (18) and the hinge shaft (19);
the load screw (16) is vertically connected with the suspension rod (18) to form a T-shaped structure;
a load nut (17) which is in threaded connection with the load screw (16);
the distance between the load nut (17) and the top surface of the box body (1) is unchanged in the rotating process, the load screw (16) moves along the axial direction of the load nut (17) through rotation, and the pre-tightening force between the brake belt (20) and the friction belt (21) is further changed;
the L-shaped rod (11) comprises a rotating arm and a swinging arm which are perpendicular to each other, the end part of the rotating arm is arranged at one end of the mandrel (25) far away from the main shaft (4) and rotates synchronously with the mandrel (25);
a travel switch (10) facing the starting position of the swing arm of the L-shaped rod (11);
the controller is connected with the travel switch (10) in a circuit and receives the electric signal of the travel switch (10);
and the counter (5) is connected with the controller circuit and is used for displaying the reciprocating swinging times of the swinging arm of the L-shaped rod (11) acquired by the travel switch (10).
2. The multifunctional detection test bed for the air valve actuator according to claim 1, wherein a long hole (7) is formed in the mounting panel (2), and the length direction of the long hole (7) is opposite to the opening of the clamping groove of the bottom plate of the air valve actuator (3); the back side of the installation panel (2) is provided with a pin retaining sleeve (26) corresponding to the long hole (7), the opening width of the pin retaining sleeve (26) is larger than that of the long hole (7), a pin retaining pin (27) is hoisted in the pin retaining sleeve (26) through a spring, the pin retaining pin (27) is a step shaft, the part with the larger diameter is limited in an open slot of the pin retaining sleeve (26), and the part with the smaller diameter passes through the long hole (7) and protrudes out of the installation panel (2).
3. The blast gate actuator multifunctional test bench of claim 1, characterized in that the travel switch (10) is a magnetic proximity switch, and a magnet is installed at the end of the swing arm.
4. The blast gate actuator multifunctional test rig according to claim 1, wherein the mounting panel (2) is arranged obliquely.
5. The blast gate actuator multifunctional detection test bed according to claim 1, wherein a polygonal groove is formed at a connecting section of the spindle (4) and the mandrel (25), a polygonal joint (23) is machined on the mandrel (25) corresponding to the polygonal groove, and the polygonal joint (23) is inserted into the polygonal groove to realize static connection of the mandrel (25) and the spindle (4).
6. The blast gate actuator multifunctional detection test bed according to claim 1, wherein the damper further comprises a guide block (24), the guide block (24) is fixedly connected with the mounting panel (2), a round hole is formed in the guide block (24), and the load screw (16) penetrates through the round hole and is respectively connected with the load nut (17) and the suspension rod (18).
7. The multifunctional detection test bed for the air valve actuator according to claim 1, wherein the load nut (17) is a threaded sleeve, a connecting rod is fixedly connected above the threaded sleeve, and the connecting rod penetrates through the top surface of the box body (1) and is connected with a hand wheel (6); a gland (22) is fixedly arranged in a matching annular gap between the connecting rod and the top surface of the box body (1), and the connecting rod is assembled on an inner ring of the gland (22) through a bearing.
8. The blast gate actuator multifunctional detection test bed according to any one of claims 1 to 7, further comprising a fully open to position feedback signal indicator lamp (14) and a fully closed to position feedback signal indicator lamp (15) arranged on the mounting panel (2).
9. The blast gate actuator multifunctional test stand according to any one of claims 1 to 7, further comprising a time adjustment potentiometer (8) in circuit connection with the controller.
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| CN201910673090.3A CN110514923B (en) | 2019-07-24 | 2019-07-24 | Multifunctional detection test bed for air valve actuator |
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| CN201910673090.3A CN110514923B (en) | 2019-07-24 | 2019-07-24 | Multifunctional detection test bed for air valve actuator |
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| CN110514923B true CN110514923B (en) | 2022-02-08 |
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