Motor support and servo valve

Abstract

The utility model provides a motor support and a servo valve, and relates to the technical field of servo valves, a first hollow cavity and a second hollow cavity are arranged in the motor support, two ends of the motor support in the height direction are respectively a near end and a far end, the near end is used for being connected with a valve body, and the far end of the second hollow cavity is used for being connected with a servo motor stator; according to the motor support and the servo valve, the part of the servo motor stator is separated through the transverse separation groove, then the servo motor stator is clamped and fixed through the vertical separation groove and the locking assembly, positioning of the servo motor is achieved, and the precision and reliability of the servo valve are improved.

Description

Technical Field

[0001] This utility model relates to the field of servo valve technology, and in particular to a motor bracket and a servo valve. Background Technology

[0002] Servo valves are fundamental hydraulic components widely used in various precision control systems. Their primary function is to convert low-power input electrical signals into precise, rapid, high-power fluid flow or pressure outputs, enabling efficient system control. They play a crucial role in aerospace, machinery manufacturing, and industrial automation, primarily for the precise control of fluid flow. The key to servo valve design lies in its stability and reliability, especially under high vibration and high load environments. In traditional servo valve operation, the valve body may be affected by external factors such as vibration and impact due to the working environment. These external factors are transmitted directly to the precision structure inside the valve body without buffering, thus affecting the accuracy and reliability of the servo valve. Utility Model Content

[0003] The main purpose of this invention is to provide a motor bracket and a servo valve, which aims to improve the reliability and stability of the servo valve operation.

[0004] To achieve the above objectives, this utility model proposes a motor bracket for supporting the valve body of a servo valve and the stator of a servo motor. The motor bracket has a first hollow cavity and a second hollow cavity. The two ends of the motor bracket in the height direction are a proximal end and a distal end, respectively. The proximal end is used to connect with the valve body, and the distal end of the second hollow cavity is used to connect with the stator of the servo motor.

[0005] A transverse partition groove is provided between the near end and far end of the second hollow cavity on the motor bracket. The part above the transverse partition groove of the motor bracket is the servo motor fixing part. The servo motor fixing part is ring-shaped. A clamping surface is provided on the inner side of the servo motor fixing part. The clamping surface is used to contact the servo motor stator to fix the position of the servo motor stator.

[0006] The servo motor fixing part is provided with a vertical partition groove that runs through the servo motor fixing part along the axial direction. The servo motor fixing part is provided with locking components at both ends of the vertical partition groove. The locking components can adjust the width of the vertical partition groove, thereby adjusting the contact force of the clamping surface clamping the servo motor stator.

[0007] In some embodiments, the locking assembly includes through holes and internal threaded holes respectively disposed at both ends of the vertical partition groove of the servo motor fixing part, and a locking bolt matching the internal threaded hole. The locking bolt can pass through and be threadedly engaged with the internal threaded hole. Rotating the locking bolt can adjust the width of the vertical partition groove.

[0008] In some embodiments, a pressure groove is provided at the proximal end of the first hollow cavity, the pressure groove being used to contact the valve body and press the valve body down.

[0009] In some embodiments, the proximal end of the motor bracket is provided with a fixing groove for connecting to the valve body by fasteners.

[0010] In some embodiments, the axial height of the servo motor fixed part is not less than 1 / 2 of the height of the servo motor stator.

[0011] In some embodiments, the distal end of the second hollow cavity of the motor bracket is further provided with a control board fixing hole and a control board positioning component. The control board positioning component is used to limit the installation position of the motor's control board, and the control board fixing hole is used to fix the position of the control board.

[0012] In some embodiments, the height of the first hollow cavity is less than the height of the second hollow cavity, and the proximal end faces of the first and second hollow cavities are on the same horizontal plane.

[0013] In some embodiments, a sealing ring mounting groove is provided at the distal end of the first hollow cavity, and the sealing ring mounting groove is used to install the sealing ring.

[0014] This utility model also provides a servo valve, including a housing, a valve body, a servo motor, and a motor bracket as described above; the housing is hollow inside, the valve body includes a base that matches the housing, and at least a portion of the valve body is disposed inside the housing; the valve core is disposed inside the valve body.

[0015] In some embodiments, the motor bracket and the base of the valve body are detachably connected via a fixing groove and fasteners.

[0016] The beneficial effects of this utility model are: the stator of the servo motor is separated by a horizontal dividing groove, and then the stator of the servo motor is clamped and fixed by a vertical dividing groove and a locking assembly, thereby realizing the positioning of the servo motor and improving the accuracy and reliability of the servo valve. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of a motor bracket provided by this utility model;

[0019] Figure 2 A schematic diagram of a motor bracket and a pressure groove provided by this utility model;

[0020] Figure 3 An exploded view of a motor bracket and a servo valve provided by this utility model;

[0021] Figure 4 A schematic diagram of a motor bracket and a servo valve assembly provided by this utility model;

[0022] Figure 5 A side view of a motor bracket and a servo valve provided by this utility model;

[0023] Figure 6 A front view of a motor bracket and a servo valve provided by this utility model;

[0024] Figure 7 A top view of a motor bracket and a servo valve provided by this utility model;

[0025] Figure 8 A schematic diagram of the near end of a motor bracket provided by this utility model;

[0026] Explanation of icon numbers:

[0027] Motor bracket 10, first hollow cavity 11, pressure groove 111, second hollow cavity 12, clamping surface 121, horizontal partition groove 122, vertical partition groove 123, control board fixing hole 124, control board positioning component 125, fixing groove 14, mounting groove 15, sealing ring mounting groove 16, valve body 22, stator 23.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0030] It should be noted that if any directional indication (such as up, down, left, right, front, back, etc.) is involved in the embodiments of this utility model, such directional indication is only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] Servo valves are fundamental hydraulic components widely used in various precision control systems. Their primary function is to convert low-power input electrical signals into precise, rapid, high-power fluid flow or pressure outputs, enabling efficient system control. They play a crucial role in aerospace, machinery manufacturing, and industrial automation, primarily for the precise control of fluid flow. The key to servo valve design lies in its stability and reliability, especially under high vibration and high load environments. In traditional servo valve operation, the valve body 22 may be affected by external factors such as vibration and impact due to the working environment. These external factors are directly transmitted to the precision structure inside the valve body 22 without buffering, thus affecting the accuracy and reliability of the servo valve.

[0033] This utility model proposes a motor bracket 10 for supporting the valve body 22 of a servo valve and the stator 23 of a servo motor. The motor bracket 10 is provided with a first hollow cavity 11 and a second hollow cavity 12. The two ends of the motor bracket 10 in the height direction are the proximal end and the distal end, respectively. The proximal end is used to connect with the valve body 22, and the distal end of the second hollow cavity 12 is used to connect with the stator 23 of the servo motor.

[0034] A transverse partition groove 122 is provided between the near end and the far end of the second hollow cavity 12 on the motor bracket 10. The part above the transverse partition groove 122 of the motor bracket 10 is the servo motor fixing part. The servo motor fixing part is annular. A clamping surface 121 is provided on the inner side of the servo motor fixing part. The clamping surface 121 is used to contact the servo motor stator 23 to fix the position of the servo motor stator 23.

[0035] The servo motor fixing part is provided with a vertical partition groove 123 that runs through the servo motor fixing part along the axial direction. The servo motor fixing part is provided with locking components at both ends of the vertical partition groove 123. The locking components can adjust the width of the vertical partition groove 123 and thus adjust the contact force of the clamping surface 121 clamping the servo motor stator 23.

[0036] In this embodiment, as Figure 1 , Figure 2 As shown, the motor bracket 10 has a frame structure and includes two cavities: a first hollow cavity 11 and a second hollow cavity 12. In practice, the first hollow cavity 11 and the second hollow cavity 12 can be a partially connected single cavity or two independent cavities. The outer contour of the motor bracket 10 is cubic, and the interior of the second hollow cavity 12 is cylindrical.

[0037] The proximal ends of the first hollow cavity 11 and the second hollow cavity 12 are used to connect to the valve body 22 of the servo valve, and the distal end of the second hollow cavity 12 is used to connect to the stator 23 of the servo motor. The interior of the second hollow cavity 12 is cylindrical and has an axis. The part above the transverse partition groove 122 of the second hollow cavity 12 is the servo motor fixing part, and at least a part of the servo motor stator 23 is connected to the clamping surface 121 of the servo motor fixing part.

[0038] The vertical dividing groove 123 cuts off the servo motor fixing part along the axis of the second hollow cavity 12, and the vertical dividing groove 123 has a certain gap, the width of which can be adjusted by the locking assembly. The vertical dividing groove 123 and the horizontal dividing groove 122 give the servo motor fixing part a deformable space. When deformed, the diameter of the servo motor fixing part changes. If the gap of the vertical dividing groove 123 decreases, the diameter of the servo motor fixing part can be reduced, thereby clamping the stator 23 of the servo motor; conversely, if the gap of the vertical dividing groove 123 increases, the diameter of the servo motor fixing part can be increased.

[0039] In some embodiments, the locking assembly may be a device capable of adjusting the gap, such as a snap-fit ​​with an eccentric mechanism or a bolt fastener.

[0040] Furthermore, the locking assembly includes through holes and internal threaded holes respectively disposed at both ends of the vertical partition groove 123 of the servo motor fixing part, and a locking bolt matching the internal threaded hole. The locking bolt can pass through and be threadedly engaged with the internal threaded hole. Rotating the locking bolt can adjust the width of the vertical partition groove 123.

[0041] In this embodiment, as Figure 1 , Figure 3 , Figure 4 As shown, the locking assembly in this embodiment consists of through holes and internal threaded holes at both ends of the vertical partition groove 123 in the servo motor mounting section. The fastening bolts pass through the through holes and engage with the internal threaded holes, allowing the fastening bolts to adjust the gap size of the vertical partition groove 123.

[0042] In some embodiments, a pressure groove 111 is provided at the proximal end of the first hollow cavity 11, and the pressure groove 111 is used to contact the valve body 22 and press the valve body 22.

[0043] The size and position of the pressure groove 111 are set according to the shape and size of the valve body 22. The pressure groove 111 can press down a part of the structure of the valve body 22, thereby pressing down the valve body 22 and preventing the valve body 22 from shaking.

[0044] Furthermore, a fixing groove 14 is provided at the near end of the motor bracket 10, which is used to connect to the valve body 22 by means of fasteners.

[0045] In this embodiment, as Figure 8 As shown, the fixing groove 14 can be an internal thread groove. The bolt passes through the valve body 22 and is connected to the fixing groove 14 by threads, thereby realizing the connection between the valve body 22 and the motor bracket 10.

[0046] In some embodiments, a plurality of fixing grooves 14 may be provided at the proximal end of the motor bracket 10 to improve the stability of the connection between the valve body 22 and the motor bracket 10.

[0047] In some embodiments, the near end of the motor bracket 10 is further provided with a plurality of mounting slots 15, which are used to mount other structures on the shock absorber bracket, thereby reducing the structural complexity while increasing the counterweight of the shock absorber bracket, thereby further enhancing the shock absorption effect of the shock absorber bracket.

[0048] Furthermore, the axial height of the fixed part of the servo motor is not less than 1 / 2 of the height of the servo motor stator 23.

[0049] In this embodiment, as Figure 4 , Figure 5 , Figure 6 As shown, the axial height of the servo motor fixing part is not less than 1 / 2 of the height of the servo motor stator 23, indicating that the servo motor fixing part can at least clamp 1 / 2 of the height of the servo motor stator 23 to ensure the stability of the connection between the motor bracket 10 and the servo motor.

[0050] Furthermore, the end of the second hollow cavity 12 of the motor bracket 10 is also provided with a control board fixing hole 124 and a control board positioning component 125. The control board positioning component 125 is used to limit the installation position of the motor control board, and the control board fixing hole 124 is used to fix the position of the control board.

[0051] In this embodiment, as Figure 3 , Figure 4 , Figure 6 , Figure 7 As shown, the distal end of the second hollow cavity 12 of the motor bracket 10 is provided with a control board fixing hole 124 and a control board positioning component 125. The control board includes a drive circuit for a servo motor and is connected to the servo motor. The control board positioning component 125 can be a structural component that matches the shape of the control board, and a part of the control board can contact the control board positioning component 125 to achieve the positioning of the control board. The control board fixing hole 124 can be an internally threaded hole, and a bolt passes through the control board and is threadedly connected to the control board fixing hole 124 to achieve the fixing of the control board.

[0052] Furthermore, the height of the first hollow cavity 11 is less than the height of the second hollow cavity 12, and the near-end faces of the first hollow cavity 11 and the second hollow cavity 12 are on the same horizontal plane. A sealing ring mounting groove 16 is provided at the far end of the first hollow cavity 11, and the sealing ring mounting groove 16 is used to install a sealing ring.

[0053] In this embodiment, as Figure 1 , Figure 2 As shown, the heights of the first hollow cavity 11 and the second hollow cavity 12 are set according to the shape of the valve body 22, and the end faces of the first hollow cavity 11 and the second hollow cavity 12 near the end are used to connect with the valve body 22. The sealing ring mounting groove 16 is used to install the sealing ring.

[0054] This utility model also provides a servo valve, including a housing, a valve body 22, a servo motor, and a motor bracket 10 as described above; the housing is hollow inside, the valve body 22 includes a base that matches the housing, and at least a portion of the valve body 22 is disposed inside the housing; the valve core is disposed inside the valve body 22.

[0055] Furthermore, the motor bracket 10 and the base of the valve body 22 are detachably connected via a fixing groove 14 and fasteners.

[0056] In this embodiment, the motor bracket 10 provides a semi-enclosed structure, offering physical protection for the valve body 22. In some embodiments, the relative position of the valve body 22 and the motor bracket 10 can be fine-tuned when the motor bracket 10 is installed. The detachable connection between the motor bracket 10 and the base of the valve body 22 simplifies the debugging process and improves testing efficiency. The overall dynamic and static performance of the servo valve, as well as component replacement, can be performed by installing only the motor bracket 10 without installing the housing, greatly simplifying the assembly and debugging process and reducing operational difficulty.

[0057] It should be understood that the terms "one embodiment" or "one example" throughout the specification mean that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in one example" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Those skilled in the art should also recognize that the embodiments described in the specification are optional embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0058] In various embodiments of this utility model, it should be understood that the sequence number of each process does not necessarily imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of this utility model embodiment.

[0059] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, or they may sometimes be executed in reverse order, depending on the functions involved. It is particularly important to note that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0060] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A motor bracket for supporting the valve body of a servo valve and the stator of a servo motor, characterized in that: The motor bracket is provided with a first hollow cavity and a second hollow cavity. The two ends of the motor bracket in the height direction are the proximal end and the distal end, respectively. The proximal end is used to connect with the valve body, and the distal end of the second hollow cavity is used to connect with the stator of the servo motor. A transverse partition groove is provided between the near end and far end of the second hollow cavity on the motor bracket. The part above the transverse partition groove of the motor bracket is the servo motor fixing part. The servo motor fixing part is ring-shaped. A clamping surface is provided on the inner side of the servo motor fixing part. The clamping surface is used to contact the servo motor stator to fix the position of the servo motor stator. The servo motor fixing part is provided with a vertical partition groove that runs through the servo motor fixing part along the axial direction. The servo motor fixing part is provided with locking components at both ends of the vertical partition groove. The locking components can adjust the width of the vertical partition groove, thereby adjusting the contact force of the clamping surface clamping the servo motor stator.

2. The motor bracket as described in claim 1, characterized in that: The locking assembly includes through holes and internal threaded holes respectively disposed at both ends of the vertical partition groove of the servo motor fixing part, and a locking bolt matching the internal threaded hole. The locking bolt can pass through and be threaded into the internal threaded hole. Rotating the locking bolt can adjust the width of the vertical partition groove.

3. The motor bracket as described in claim 1, characterized in that: The first hollow cavity has a pressure groove at its proximal end, which is used to contact the valve body and press the valve body down.

4. A motor bracket as described in claim 1, characterized in that: The motor bracket has a fixing groove at its near end, which is used to connect to the valve body via fasteners.

5. A motor bracket as described in claim 1, characterized in that: The axial height of the fixed part of the servo motor is not less than 1 / 2 of the height of the servo motor stator.

6. A motor bracket as described in claim 1, characterized in that: The far end of the second hollow cavity of the motor bracket is also provided with a control board fixing hole and a control board positioning component. The control board positioning component is used to limit the installation position of the motor control board, and the control board fixing hole is used to fix the position of the control board.

7. A motor bracket as described in claim 1, characterized in that: The height of the first hollow cavity is less than the height of the second hollow cavity, and the near-end faces of the first and second hollow cavities are on the same horizontal plane.

8. A motor bracket as described in claim 7, characterized in that: The distal end of the first hollow cavity is provided with a sealing ring mounting groove, which is used to install a sealing ring.

9. A servo valve, characterized in that: It includes a housing, a valve body, a servo motor, and a motor bracket as described in any one of claims 1-8; the housing is hollow inside, the valve body includes a base that matches the housing, and at least a portion of the valve body is disposed inside the housing; the valve core is disposed inside the valve body.

10. A servo valve as described in claim 9, characterized in that: The motor bracket and the valve body base are detachably connected via a fixing groove and fasteners.

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