CN217539709U - Adjusting device of nozzle baffle servo valve - Google Patents
Adjusting device of nozzle baffle servo valve Download PDFInfo
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- CN217539709U CN217539709U CN202221191764.XU CN202221191764U CN217539709U CN 217539709 U CN217539709 U CN 217539709U CN 202221191764 U CN202221191764 U CN 202221191764U CN 217539709 U CN217539709 U CN 217539709U
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Abstract
The application discloses adjusting device of nozzle flap servovalve belongs to nozzle flap servovalve technical field. This adjusting device includes base member, retaining member and adjusts the pole, establishes in the base member and offers the mounting hole that is used for holding nozzle baffle servo valve, and the retaining member is located on the base member and can to dismantle with nozzle baffle servo valve and be connected, adjusts pole and base member threaded connection, and adjusts the torque motor or the armature subassembly mount pad of the one end orientation nozzle baffle servo valve of pole. The adjusting rod is used for pushing the torque motor to adjust the mechanical zero position of the nozzle baffle servo valve, and the adjusting rod is used for pushing the armature component mounting seat to adjust the hydraulic zero position of the nozzle baffle servo valve.
Description
Technical Field
The utility model belongs to the technical field of nozzle flap servovalve, especially, relate to a nozzle flap servovalve's adjusting device.
Background
The two-stage nozzle baffle plate electro-hydraulic servo valve is widely used in various military and civil industries such as metallurgy, aviation, aerospace, ships, war industry and the like, and is also used as a pilot stage for a three-stage electro-hydraulic servo valve. The two-stage nozzle baffle plate electro-hydraulic servo valve can be used in a hydraulic servo control system which requires high control precision, such as position control, pressure control, speed control and the like of an actuating mechanism.
During use, the two-stage nozzle baffle servo valve can generate the problems of mechanical zero offset or hydraulic zero offset, so that the whole hydraulic servo control system is in failure.
Therefore, there is a need for an adjustment tool that can adjust the nozzle flapper servo valve to mechanical and hydraulic null positions.
The valve sleeve and the valve core of the electro-hydraulic servo valve with the two-stage nozzle baffle plate have the overlapping amount of 1-3 mu m and the matching clearance of 2-4 mu m. If the valve sleeve and the valve core of the two-stage nozzle baffle plate electro-hydraulic servo valve are not overlapped enough, the mechanical zero position of the two-stage nozzle baffle plate electro-hydraulic servo valve is deviated. After the mechanical zero position is deviated, the control precision of the equipment and the three-stage servo valve is reduced, and serious equipment faults are caused.
The gap between the nozzle and the baffle of the two-stage nozzle baffle plate electro-hydraulic servo valve is only 20-30 mu m, and the gap between the nozzle and the baffle is small, so that the assembly precision is high, the pollutant blockage fault between the nozzle and the baffle is easy to occur, and the equipment fault is caused.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving, at least to some extent, the technical problem of the mechanical zero offset of the present nozzle flap servo valves. Therefore, the application provides a device for adjusting the mechanical zero position of the nozzle baffle servo valve.
The application embodiment provides a nozzle flap servovalve's adjusting device includes:
the nozzle baffle servo valve comprises a base body, wherein a mounting hole for accommodating a nozzle baffle servo valve is formed in the base body, the mounting hole penetrates through the top and the bottom of the base body, and a first threaded hole communicated with the mounting hole is formed in the side wall of the base body;
the locking piece is arranged on the base body and detachably connected with the nozzle baffle servo valve so as to relatively fix the base body and the baffle servo valve; and the number of the first and second groups,
the adjusting rod is in threaded connection with the base body through a first threaded hole, and one end of the adjusting rod faces towards a torque motor or an armature component mounting seat of the nozzle baffle servo valve.
Alternatively, for better realisation of the present application, the axial direction of the adjustment lever is parallel to the horizontal plane.
Optionally, in order to better implement the present application, the adjusting rod is multiple, and the multiple adjusting rods are distributed at different positions of the side wall of the base.
Optionally, for better implementation of the present application, a plurality of the adjusting rods are all located on the same horizontal plane.
Alternatively, for better implementation of the present application, the locking member is threadedly coupled to the base, and one end of the locking member is located in the mounting hole.
Optionally, in order to better implement the present application, the height of the locking member is lower than the height of the adjusting rod.
Optionally, in order to better implement the present application, the locking member is multiple, and the adjusting rods are distributed at different positions of the side wall of the base.
Optionally, for better implementation of the present application, a plurality of the adjusting rods are all located on the same horizontal plane.
Optionally, for better implementation of the present application, the mounting hole is a circular hole, and the mounting hole is matched with the armature component mounting seat of the nozzle-flapper servo valve.
Optionally, for better implementation of the present application, the mounting hole is a rectangular hole, and the mounting hole is matched with the base of the nozzle-flapper servo valve.
The utility model discloses compare in prior art and have following beneficial effect:
the utility model provides an adjusting device of nozzle baffle servo valve through set up the mounting hole in the base member for the base member can cup joint outside nozzle baffle servo valve through the mounting hole, and, connects nozzle baffle servo valve and base member through the retaining member, makes nozzle baffle servo valve and base member relatively fixed, through adjusting pole and base member threaded connection, makes to adjust the axis direction removal that the first screw hole of base member can be followed to the pole. When the mechanical zero position needs to be adjusted, the end part of the adjusting rod is aligned to the torque motor, the torque motor is pushed to move through the adjusting rod, the feedback rod and the valve core connected with the feedback rod are driven to move, and therefore the valve core and the valve sleeve have overlapping amount, and the mechanical zero position is achieved. When hydraulic zero position adjustment is needed, the end of the adjusting rod is aligned to the armature component mounting seat, the armature component mounting seat is pushed to move through the adjusting rod, the baffle is arranged to move, accordingly, the gap between the baffle and the nozzles is changed, and the hydraulic zero position is achieved when the gaps between the two nozzles and the baffle are the same.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 shows a schematic of a nozzle flapper servo valve;
FIG. 2 is a schematic diagram showing one configuration of an adjustment device for a nozzle-flapper servo valve;
fig. 3 shows a schematic view of another embodiment of the adjusting device of the nozzle flap servo valve.
Reference numerals:
11-a base; 12-upper shell; 13-torque motor, magnetizer; 14-a valve core; 15-valve housing; 16-a feedback rod; 17-a baffle; 18-an armature assembly mount;
210-a substrate; 211-a mounting cavity; 220-a retaining member; 230-adjusting the lever.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indications in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly. In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The application is described below with reference to specific embodiments in conjunction with the following drawings:
as shown in fig. 1, the nozzle-flapper servo valve structurally comprises a base 11 and an upper housing 12 detachably fixed on the base, a torque motor 13 is arranged in a cavity inside the upper housing 12, an armature component in the torque motor 13 is fixed on an armature component mounting seat 18, a valve core 14 is arranged in the cavity inside the base 11, valve sleeves 15 are arranged at two ends of the valve core 14, a flapper 17 is connected to the lower end of the torque motor 13, the flapper 17 penetrates through a gap between two nozzles, and a feedback rod 16 connected with the flapper 17 extends into a cavity in the middle of the valve core 14.
The embodiment provides an adjusting device of a nozzle baffle servo valve, which is used for adjusting and correcting a mechanical zero position or a hydraulic zero position after the nozzle baffle servo valve is deflected.
As shown in fig. 2, the adjusting device includes a base 210, a locking member 220 connected to the base 210, and an adjusting rod 230, wherein a mounting hole 211 is formed in the base 210, the mounting hole 211 is a straight hole, and one end of the mounting hole 211 penetrates through the top of the base 210 and the other end penetrates through the bottom of the base 210 for receiving the nozzle-flapper servo valve in the mounting hole 211, so that the base 210 becomes an annular structural member and is located outside the nozzle-flapper servo valve. A first screw hole communicating with the mounting hole 211 is opened in a side wall of the base 210. The locker 220 is disposed on the base 210, and the locker 220 can be connected to the nozzle-flapper servo valve, so that locking between the base 210 and the nozzle-flapper servo valve is accomplished by the locker 220, preventing relative movement between the base 210 and the nozzle-flapper servo valve. The adjusting rod 230 is a straight rod, and a first external thread matched with the first thread is arranged on the rod body of the adjusting rod 230, so that the adjusting rod 230 can be connected in the first threaded hole through the first external thread, and the adjusting rod 230 can move towards the center of the mounting hole 211 in the rotating process.
When the mechanical zero position of the nozzle flapper servo valve is adjusted, the adjusting rod 230 is connected in the first threaded hole, the base body 210 is sleeved outside the circumference of the base of the nozzle flapper servo valve through the mounting hole 211, and the horizontal height of the adjusting rod 230 is adjusted by moving the base body 210 up and down, so that one end of the adjusting rod 230, which is positioned in the mounting hole 211, faces the side wall of the torque motor of the nozzle flapper servo valve. The base 210 is then coupled to the base of the nozzle-flapper servo valve by the retaining member 220 so that the base 210 and the nozzle-flapper servo valve are relatively fixed and relative movement between the nozzle-flapper servo valve and the base 210 is prevented. Finally, the adjusting rod 230 is rotated such that the adjusting rod 230 spirally moves along the axial direction of the first threaded hole, one end of the adjusting rod 230 abuts against the sidewall of the torque motor, and the torque motor is pushed by the adjusting rod 230 by continuously rotating the adjusting rod 230. Because the torque motor is connected with the feedback rod, the torque motor is pushed to move the feedback rod, and one end of the feedback rod extends into the cavity in the middle of the valve core, the valve core is driven to move by the movement of the feedback rod, so that the overlapping amount between the valve core and the valve sleeve is adjusted. In the moving process of the valve core, the flow of two throttling ports corresponding to two ends of the valve core and the output flow corresponding to the middle of the valve core are changed. In the process of rotating the adjusting rod 230 to move the torque motor, the change of the output flow of the nozzle flapper servo valve is measured in real time, when the output flow of the nozzle flapper servo valve is zero, the flow of the throttling port is also zero, at the moment, the valve core and the valve sleeve of the nozzle flapper servo valve are overlapped, the nozzle flapper servo valve is in a mechanical zero position, and the adjustment and the calibration of the mechanical zero position of the nozzle flapper servo valve are completed.
In addition, when the hydraulic zero position of the nozzle flapper servo valve is adjusted, the upper casing of the nozzle flapper servo valve, the permanent magnet, the magnetizer and the coil part of the torque motor are firstly removed, the armature component mounting base is exposed, the adjusting rod 230 is connected in the first threaded hole, the base body 210 is sleeved outside the circumference of the armature component mounting base of the nozzle flapper servo valve through the mounting hole 211, and one end of the adjusting rod 230 positioned in the mounting hole 211 faces the armature component mounting base of the nozzle flapper servo valve. The end of the adjusting rod 230 pushes the armature component mounting seat to move by rotating the adjusting rod 230, so that the baffle is driven to move, and the distance between the baffle and the nozzle can be changed after the baffle moves. When the output flow of the servo valve is zero, the gaps between the two nozzles and the baffle are the same, and at the moment, the gap is the hydraulic zero position of the torque motor of the two-stage nozzle baffle plate electro-hydraulic servo valve, so that the additional adjustment and calibration of the hydraulic pressure of the nozzle baffle plate servo valve are completed.
When the mechanical zero position or the hydraulic zero position is adjusted, the nozzle baffle servo valve can be fixed on a servo valve test bed, and the output flow is measured through the servo valve test bed. The servo valve test bed meets the 1 st part of a GBT 15623.1-2018 hydraulic transmission electric modulation hydraulic control valve: a four-way directional flow control valve test method. Moreover, the torque motor displacement is adjusted by the threaded connection of the adjusting rod 230 and the base body 210, so that the precision adjustment of the torque motor can reach the micron level, and the zero offset amount after adjustment is smaller.
Further, in order to enable the base 210 to be better fixed to the base of the nozzle-flapper servo valve, the cross-section of the mounting hole 211 of the base 210 may be rectangular or circular. The concrete position of mounting hole 211 needs the different structure looks adaptations of the nozzle flap servovalve of establishing with base member 210 cover to make base member 210 cup joint the back through mounting hole 211 and nozzle flap servovalve, can realize base member 210 and nozzle archives servovalve's primary positioning, make the adjustment pole 230 can be easier to the adjustment to orientation torque motor.
Further, in the present embodiment, the first screw hole is horizontally disposed. When the mechanical zero adjustment is performed, the horizontally arranged first threaded hole can enable the adjusting rod 230 to horizontally push the torque motor to move. So that the force of the adjustment lever 230 to the torque motor does not generate a component force to move the torque motor downward, thereby making it easier to push the torque motor. And also the displacement amount of the torque motor can be directly obtained by rotating the number of turns of the adjustment lever 230. When hydraulic zero adjustment is performed, the horizontally arranged second threaded hole can enable the adjusting rod 230 to horizontally push the armature component mounting seat, and the displacement of the armature component mounting seat can be directly obtained.
Further, the number of the adjustment rods 230 is plural, the plural adjustment rods 230 are distributed at intervals along the circumferential direction of the base 210, and the plural adjustment rods 230 are all located at the same horizontal height, so that the plural adjustment rods 230 face the nozzle-flapper servo valve from different directions. When the adjusting rod 230 is used for adjusting the mechanical zero position or the hydraulic zero position, the adjusting rod 230 which is required to provide the thrust direction for the torque motor or the armature component mounting seat can be rotated from the adjusting rods 230 for use, and the adjusting process is more convenient and faster.
Preferably, in the present embodiment, the number of the adjustment rods 230 is four, and the four adjustment rods 230 are respectively disposed at the left and right sides and the front and rear sides of the base 210, so that the four adjustment rods 230 are respectively used for pushing the left and right sides and the front and rear sides of the base.
The adjustment rod 230 is preferably a bolt to facilitate rotation of the adjustment rod 230, and the bolt is provided with a nut to facilitate rotation of the adjustment rod 230.
Further, the side wall of the base 210 is provided with a second threaded hole communicated with the mounting hole 211, the locking member 220 is a rod, and the outer wall of the locking member 220 is provided with a second external thread matched with the second threaded hole, so that the locking member 220 is in threaded connection with the second threaded hole. Moreover, the horizontal height of the locking member 220 is lower than the horizontal height of the adjusting rod 230, so that when the adjusting rod 230 faces the torque motor, the locking member 220 faces the base, and after the end of the locking member 220 abuts against the base, the base 210 and the base of the nozzle-flapper servo valve can be relatively fixed, but in some other embodiments, the locking member 220 may also be a wedge block, a hydraulic cylinder, or the like, which can relatively fix the base 210 and the nozzle-flapper servo valve.
Preferably, in this embodiment, the locking member 220 is a bolt.
Optionally, in this embodiment, the number of the locking members 220 is multiple, and the multiple locking members 220 are spaced apart along the circumference of the base 210, so that the multiple adjustment rods 230 can tightly press and fix the base of the nozzle-flapper servo valve from different directions.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Claims (10)
1. Adjusting device of nozzle flap servovalve characterized in that includes:
the nozzle baffle servo valve comprises a base body, a first clamping piece and a second clamping piece, wherein the base body is provided with a mounting hole for accommodating a nozzle baffle servo valve, the mounting hole penetrates through the top and the bottom of the base body, and the side wall of the base body is provided with a first threaded hole communicated with the mounting hole;
the locking piece is arranged on the base body and detachably connected with the nozzle baffle servo valve so as to relatively fix the base body and the baffle servo valve; and the number of the first and second groups,
the adjusting rod is in threaded connection with the base body through a first threaded hole, and one end of the adjusting rod faces towards a torque motor or an armature component mounting seat of the nozzle baffle servo valve.
2. The adjustment device of a nozzle-flapper servo valve as claimed in claim 1 wherein the axial direction of the adjustment rod is parallel to a horizontal plane.
3. The apparatus of claim 2, wherein the plurality of adjustment rods are distributed at different positions on the sidewall of the base.
4. The apparatus of claim 3 wherein said plurality of said adjustment rods are all located in the same horizontal plane.
5. The nozzle-flapper servo valve adjusting device of claim 1 wherein the retaining member is threadably connected to the base and one end of the retaining member is positioned in the mounting hole.
6. The apparatus of claim 2, wherein the locking member is at a lower height than the adjustment rod.
7. The apparatus of claim 5, wherein the locking member is provided in plurality, and the plurality of adjustment rods are disposed at different positions on the sidewall of the base.
8. The adjustment device of a nozzle-flapper servo valve as claimed in claim 1 wherein the plurality of adjustment rods are all located on the same horizontal plane.
9. The nozzle-flapper servo valve actuator of any one of claims 1-8 wherein the mounting hole is a circular hole, the mounting hole adapted to an armature assembly mount of the nozzle-flapper servo valve.
10. The nozzle-flapper servo valve actuator of any one of claims 1-8 wherein the mounting hole is a rectangular hole, the mounting hole fitting into a seat of the nozzle-flapper servo valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221191764.XU CN217539709U (en) | 2022-05-17 | 2022-05-17 | Adjusting device of nozzle baffle servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221191764.XU CN217539709U (en) | 2022-05-17 | 2022-05-17 | Adjusting device of nozzle baffle servo valve |
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|---|---|
| CN217539709U true CN217539709U (en) | 2022-10-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221191764.XU Active CN217539709U (en) | 2022-05-17 | 2022-05-17 | Adjusting device of nozzle baffle servo valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117018790A (en) * | 2023-09-28 | 2023-11-10 | 山西猫头鹰环保科技股份有限公司 | Gantry type railway dust suppression method |
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2022
- 2022-05-17 CN CN202221191764.XU patent/CN217539709U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117018790A (en) * | 2023-09-28 | 2023-11-10 | 山西猫头鹰环保科技股份有限公司 | Gantry type railway dust suppression method |
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