A valve motor with integrated encoder

Abstract

The present invention relates to the field of encoder motors, and specifically to a valve motor with an integrated encoder. It includes a motor body, a housing and an output shaft, one end of the housing is provided with an end cap; a seat body, the seat body includes a first plate body; a shaft frame is slidably arranged on the seat body; the shaft frame includes a shaft seat; a transmission shaft is rotatably installed in the shaft seat, the transmission shaft and the output shaft are axially opposite, and the transmission shaft and the output shaft have mutually adapted connection structures on opposite ends; an encoder assembly, a light source and a photosensitive element are respectively arranged on the opposite end faces between the shaft seat and the first plate body, and an optical code disk is installed on the transmission shaft; a group of center positioning assemblies uniformly arrayed around the circumference of the output shaft, the center positioning assembly includes a pressure wheel and a transmission connecting rod assembly, the shaft seat moves toward the end cap until the transmission shaft and the output shaft are connected, and the transmission connecting rod assembly is used to drive a group of pressure wheels to be pressed on the side of the output shaft. Under the condition of ensuring the error of the rotating shaft runout, the encoder module is effectively isolated from the motor body to avoid the influence of high temperature on the encoder module.

Description

Technical Field

[0001] The invention relates to the field of encoder motors, and in particular to a valve motor with an integrated encoder. Background Art

[0002] In the field of valve automation control, motors use photoelectric encoders to achieve high-precision control of motor motion parameters, thereby controlling the degree of valve opening and closing and controlling pipeline flow. The basic principle is to use the propagation and occlusion of light to obtain data information of rotation or displacement. Photoelectric encoders usually consist of the following main parts: Light source: Generally, light-emitting diodes (LEDs) or lasers are used as light sources. Photoelectric sensors: Usually photodiodes or photoresistors are used to receive light signals. Encoder disk: A part inside the encoder, usually an optical disk with transparent and opaque areas. The patterns on the disk are arranged at specific intervals, such as stripes or patterns. Processing circuit: Responsible for converting the received light signal into an electrical signal, and further processing to obtain angle or displacement information. When the encoder shaft rotates, the light emitted by the light source is periodically blocked by the transparent and opaque parts of the encoder disk, causing changes in light intensity. The light signal received by the photoelectric sensor will generate a pulse signal, and the number, frequency and phase of the pulses reflect the rotation angle and direction of the shaft. By counting and analyzing these pulse signals, the control system can obtain accurate position information.

[0003] The failure conditions of photoelectric sensors include the temperature of the operating environment and the runout error of the shaft. Among them, if the runout error of the shaft is too large, on the one hand, the pulse signal received by the photoelectric encoder will change irregularly, thus affecting the accuracy of the signal and causing inaccurate measurement results; on the other hand, the runout of the shaft may cause inconsistent results of each measurement, affecting the repeatability of the system, and causing errors in the control system during feedback, resulting in inability to stabilize control.

[0004] In traditional encoder motors, the encoder module is integrated on the rear side of the motor, and the rotating parts are installed on the motor shaft. However, in high-temperature environments, such as during oil refining, the valve controlled by the motor is used to regulate the oil flow. In high-temperature environments, the motor is often in a high-temperature state during use. If the encoder module is too close to the motor body, it will affect the service life, resulting in failure and reduced control accuracy. If the encoder module is isolated from the motor body, the motor output shaft will be too long, making it difficult to ensure the runout error when the shaft that drives the encoder is rotating. Summary of the invention

[0005] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a valve motor with an integrated encoder, which effectively isolates the encoder module from the motor body to avoid high temperature affecting the encoder module while ensuring the shaft runout error.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] A valve motor with an integrated encoder comprises a motor body, the motor body comprises a housing and an output shaft, an end cover is arranged at one end of the housing, and the output shaft extends out of the end cover along the x direction;

[0008] Also includes:

[0009] A seat body, which is arranged on the outside of the end cover and includes a first plate body;

[0010] The shaft frame is slidably arranged on the seat body, and the sliding direction of the shaft frame is parallel to the x direction; the shaft frame includes a shaft seat arranged between the first plate body and the end cover,

[0011] The transmission shaft is rotatably mounted in the shaft seat, the transmission shaft is axially aligned with the output shaft, and mutually adapted connection structures are provided between the opposite ends of the transmission shaft and the output shaft; the transmission shaft extends out of the seat body away from one end of the output shaft to be transmission-connected with an external driven member;

[0012] The encoder assembly includes an optical code disk and a light source and a photosensitive element facing each other, the light source and the photosensitive element are respectively arranged on the end surfaces opposite to each other between the shaft seat and the first plate body, the optical code disk is installed on the transmission shaft, and the optical code disk is arranged between the light source and the photosensitive element;

[0013] A set of center positioning assemblies arranged uniformly around the circumference of the output shaft, the number of the center positioning assemblies is at least 3, the center positioning assembly includes a pressure wheel and a transmission connecting rod assembly, the pressure wheel is mounted on the transmission connecting rod assembly, and the transmission connecting rod assembly is connected to the end cover and the shaft seat;

[0014] The shaft seat moves toward the end cover until the transmission shaft and the output shaft are connected. During this process, the transmission connecting rod assembly is used to drive a group of pressure wheels to be pressed on the side of the output shaft.

[0015] Furthermore, in the valve motor with integrated encoder in the present application, when a set of pressure wheels are pressed on the side of the output shaft, the pressure wheels are parallel to the output shaft, and the contact position between the pressure wheels and the output shaft is on the virtual plane where the axis cores of the pressure wheels and the output shaft are located. As a preferred solution of the present application, the pressure wheels are positively pressed on the output shaft during operation, and the output shaft drives the pressure wheels to rotate.

[0016] Furthermore, in the present application, a valve motor with an integrated encoder, the transmission connecting rod assembly includes: a first connecting rod, the first connecting rod is pivotally connected to the end cover, and a group of first connecting rods are arranged in a circular array around the output shaft; a second connecting rod corresponding to the first connecting rod one by one, the second connecting rod is pivotally connected to the shaft seat, and the second connecting rod is rotatably connected to the first connecting rod around the shaft core a; a wheel frame is provided on the second connecting rod, the wheel frame is arranged at a position where the second connecting rod is rotatably connected to the first connecting rod, and the pressure wheel is rotatably installed at one end of the wheel frame away from the second connecting rod. As a preferred embodiment of the present application, after the output shaft and the transmission shaft are connected, the first connecting rod and the second connecting rod are used to support the pressure wheel to press on the output shaft to ensure stability.

[0017] Furthermore, in the valve motor with an integrated encoder in the present application, the wheel frame on the second connecting rod can be rotated and adjusted around the axis a.

[0018] Furthermore, in the valve motor with integrated encoder in the present application, the second connecting rod near one end of the first connecting rod is provided with a side extending around the circumference of the shaft core a; the wheel frame includes a connecting seat, a connecting plate is provided on the connecting seat, the connecting plate and the second connecting rod are pivotally connected around the shaft core a, and a set screw is threadedly connected on the connecting seat, and the front end of the set screw abuts against the side. As a preferred solution of the present application, the set screw is used to lock the wheel frame to the end of the second connecting rod in the circumferential direction, and rotate to adjust the circumferential position of the wheel frame relative to the end of the second connecting rod to ensure the parallelism of the pressure wheel and the shaft core of the output shaft when the pressure wheel is pressed against the output shaft.

[0019] Furthermore, in the present application, a valve motor with an integrated encoder is provided with a second bearing in the shaft seat, the transmission shaft is penetrated and installed in the second bearing, and the shaft seat and the transmission shaft are axially locked; the seat body includes a second plate body, the second plate body is arranged on the side of the first plate body away from the shaft seat, the first plate body and the second plate body are fixedly connected, a bearing mounting hole is provided on the second plate body, a third bearing is installed in the bearing mounting hole by interference fit, the axial extension depth of the bearing mounting hole is greater than the width of the third bearing, and the transmission shaft is installed in the inner hole of the third bearing by interference fit at one end away from the shaft seat; an adjusting cap is connected to each of the two ends of the second plate body, the adjusting cap can be adjusted and moved along the x direction, an annular column is provided at one end of the adjusting cap close to the third bearing, and the end of the annular column close to the third bearing abuts against the outer ring end wall of the third bearing; a first limiting step is provided at one end of the transmission shaft corresponding to the third bearing close to the first plate body, the first limiting step abuts against the end face of the inner ring of the third bearing, and the transmission shaft is axially penetrated through the adjusting cap; the adjusting cap is used to adjust the position of the third bearing in the bearing mounting hole to drive the transmission shaft and the shaft frame to move, so as to switch the connection or disconnection between the transmission shaft and the output shaft. The traditional debugging method is to remove the seat body and the shaft frame as a whole to test the runout of the output shaft and the transmission shaft respectively. Then the seat body and the shaft frame are reconnected to the motor body, and the connection process is re-aligned to ensure the concentricity of the output shaft and the transmission shaft, which has the disadvantage of being cumbersome to operate. Based on the above device, its operation method includes the following steps: first, the adjustment cap on the side of the third bearing away from the output shaft is adjusted and moved in the x direction to make room for the third bearing to move in the x direction; then the adjustment cap on the side of the third bearing close to the output shaft is adjusted and moved so that the annular column pushes the outer ring end wall of the third bearing to move in the x direction. During this process, the shaft seat and the transmission shaft move until the transmission shaft is separated from the output shaft. After separation, the two ends of the transmission shaft are still limited by the second bearing and the third bearing, and the output shaft and the transmission shaft can be directly tested for runout respectively. When testing the runout of the transmission shaft, the drive motor is connected to the end of the transmission shaft away from the motor body. After the detection is completed, the reverse operation is performed in the same way to connect the transmission shaft and the output shaft. In this process, since the bearing mounting hole and the third bearing have an interference fit, the movement of the third bearing in the bearing mounting hole drives the transmission shaft and the shaft seat to move, which can ensure the stability of the concentricity of the transmission shaft and the shaft seat during the movement. Therefore, in the process of completing the secondary docking of the transmission shaft and the output shaft, there is no need to readjust the relative position between the first plate and the motor body. While ensuring the concentricity, the efficiency of the separation and secondary docking of the output shaft and the transmission shaft is improved.

[0020] Furthermore, in a valve motor with an integrated encoder in the present application, an adjusting cap includes a first adjusting cap arranged at an end of the second plate body away from the first plate body, a connecting ring platform is extended from the end of the second plate body near the first adjusting cap, a bearing mounting hole is arranged on the connecting ring platform, the first adjusting cap includes an annular sleeve and an annular limit plate extending radially inwardly from the annular sleeve, the annular sleeve is sleeved on the connecting ring platform and threadedly connected to the connecting ring platform, the annular column includes a first annular column that abuts against a side of the third bearing away from the first plate body, the first annular column is abuttingly connected to the annular limit plate; the adjusting cap also includes a second adjusting cap arranged at an end of the second plate body near the first plate body, a threaded hole is provided on the second plate body, the threaded hole is arranged at an end of the first plate body near the bearing mounting hole, the radial size of the threaded hole is larger than the bearing mounting hole, the second adjusting cap is threadedly connected in the threaded hole, the annular column includes a second annular column, and the second annular column is arranged at an end of the second adjusting cap near the third bearing. As a preferred solution of the present application, with the output shaft and the transmission shaft connected as the initial state, the process of separating the output shaft and the transmission shaft is: first screw the first adjusting cap to move it in the x direction, so as to make the third bearing move in the bearing mounting hole, and then screw the second adjusting cap to move it in the x direction, so as to push the third bearing to move to the axial abutment of the third bearing, the first annular column and the first adjusting cap through the second annular column. At this time, the transmission shaft moves to separate from the output shaft, and a set of pressure wheels are separated from the side of the output shaft. The steps of reconnecting the output shaft and the transmission shaft are: screw the second adjusting cap to move it toward the first plate body, so as to make the third bearing move in the bearing mounting hole toward the first plate body, and then screw the first adjusting cap to move it toward the first plate body, so as to push the first annular column and the third bearing to move in the bearing mounting hole, so that the pressure wheel is pressed against the side of the output shaft and the output shaft is connected to the transmission shaft.

[0021] Furthermore, in the present application, a valve motor with an integrated encoder, the shaft frame includes an annular plate, the annular plate is arranged between the first plate body and the second plate body, the shaft seat and the annular plate are fixedly connected by a group of guide rods extending along the x direction; a second sliding sleeve corresponding to the guide rod is installed on the first plate body, and the guide rod is slidably passed through the second sliding sleeve; it also includes a group of return springs, the return springs are sleeved on the guide rod, and the two ends of the return springs are in contact with the relative end surfaces between the first plate body and the guide rod; a bearing sleeve hole is provided on the shaft seat, the second bearing is installed in the bearing sleeve hole, and the inner wall of the bearing sleeve hole is provided with an annular limiting protrusion, which is in contact with the end face of the outer ring of the bearing at one end of the proximal cover of the second bearing; a limit sleeve is sleeved on the transmission shaft, and the limit sleeve is in contact with the end face of the inner ring of the bearing at one end of the proximal annular plate of the second bearing. As a preferred solution of the present application, the return spring is used to push the annular plate and sequentially transmit the thrust to the transmission shaft through the guide rod, the shaft seat, and the second bearing, so that the transmission shaft is subjected to thrust in the x direction. When the first adjustment cap moves in the x direction to make room for the third bearing to move, the transmission shaft is subjected to the force of the return spring and can directly push the third bearing and the first adjustment cap to move synchronously in the x direction, automatically completing the separation to improve the separation efficiency. At this time, the second adjustment cap plays a role of insurance after the return spring fails (the return spring elastic force cannot push the third bearing).

[0022] Furthermore, in the present application, a valve motor with an integrated encoder is provided with a second adjusting cap, and a driving wrench is sleeved on the driving section. Rotating the driving wrench can drive the second adjusting cap to rotate through the driving section, and the driving wrench is provided with a driving rod extending along the x direction. The second plate body is provided with an arc-shaped limit groove with a width corresponding to the radial size of the driving rod, and the arc corresponding to the arc-shaped limit groove is concentric with the transmission shaft. The driving rod passes through the arc-shaped limit groove, and a sleeve is sleeved on the driving rod. The sleeve body is provided with a through screw hole and is threadedly connected to the driving rod, and the sleeve body is in contact with the end of the second plate body away from the first plate body. The end of the second plate body away from the first plate body is detachably connected to a pressure cover, and the pressure cover axially contacts the end of the sleeve body away from the second plate body; the second adjusting cap is provided with an angle adjustment groove, and the angle adjustment groove is set at the axial end of the driving section. When the driving wrench moves to the position of the angle adjustment groove, the driving wrench and the driving section are circumferentially unlocked. As a preferred solution of the present application, since the second adjustment cap is integrally arranged between the first plate body and the second plate body, and there is an annular plate on the outside, it is difficult to insert a tool to rotate the second adjustment cap. The present application drives the drive wrench to rotate the drive section and the second adjustment cap by rotating the drive rod in the arc limit groove. When the drive rod rotates in the arc limit groove to the end of the arc limit groove and cannot continue to rotate, the drive wrench is axially moved to the angle adjustment groove. At this time, the drive wrench is circumferentially unlocked from the drive section, and the drive rod is then rotated in the opposite direction to the other end of the arc limit groove, and the drive wrench is then axially moved to be sleeved on the drive section. At this time, the drive rod is toggled again to allow the drive section to continue rotating.

[0023] Furthermore, in the present application, a valve motor with an integrated encoder is provided with a cooling fan at one end of the shell away from the end cover, and a group of circumferentially spaced guide plates are provided on the side wall of the shell, the guide plates extend in the x direction to one end of the shell proximal to the end cover, and the air outlet of the cooling fan faces the guide plates; the distance from the root of the guide plate to the core of the transmission shaft is d, the distance from the outer edge of the end cover and the shaft seat to the core of the transmission shaft is less than d, and the distance from the outer edge of the first plate body to the core of the transmission shaft is greater than d; the photosensitive element is arranged on the circuit board, and the circuit board is installed at one end of the proximal end cover of the first plate body through a group of isolation rods, the isolation rods are arranged axially between the circuit board and the first plate body, and a heat dissipation cavity is provided between the circuit board and the first plate body. As a preferred embodiment of the present application, the cooling fan is used to dissipate heat for the motor body and the encoder assembly, and the distance from the outer edge of the first plate body to the core of the transmission shaft is greater than d, so as to guide the wind blown out by the cooling fan to the heat dissipation cavity between the circuit board and the first plate body to take away the heat of the circuit board.

[0024] It can be seen from the above technical solution that the present invention has the following beneficial effects:

[0025] 1. The present invention provides a valve motor with an integrated encoder, which is provided with a seat body separated from the motor body, a shaft frame is slidably provided on the seat body, a transmission shaft for driving the encoder assembly is provided on the shaft frame, and the encoder assembly is provided as a whole between the first plate body and the shaft seat and separated from the motor body, which can effectively isolate the heat generated by the motor body. It is prevented that the encoder assembly is too close to the motor body and causes overheating failure. By providing a seat body and shaft frame independent of the motor body, and rotatably installing the transmission shaft on the shaft frame, the stability of the transmission shaft rotation can be ensured.

[0026] 2. The present invention provides a valve motor with an integrated encoder. When in use, the motor body and the seat body are first roughly positioned and installed, the output shaft and the transmission shaft are axially opposite, and the shaft frame is moved so that the transmission shaft and the output shaft are connected. In this process, the transmission connecting rod assembly is used to drive a group of pressure wheels to press on the side of the output shaft. When all the pressure wheels are pressed on the side of the output shaft, it means that the concentricity of the output shaft and the transmission shaft is qualified. At this time, the position of the motor body and the seat body is locked and fixed. At this time, the transmission connecting rod assembly is used as a support frame set between the end cover and the shaft seat to limit the jump of the output shaft near the transmission shaft during the rotation process. If there are pressure wheels pressed on the side of the output shaft, and other pressure wheels are not in contact with the output shaft, it means that the coaxiality of the output shaft and the transmission shaft is unqualified, and the relative position of the motor body and the seat body needs to be fine-tuned so that all the pressure wheels are pressed on the output shaft when the output shaft and the transmission shaft are connected, and the position where a group of pressure wheels are not in contact with the output shaft corresponds to the relative fine-tuning direction of the motor body and the seat body, which is convenient for judging the direction of adjusting the relative position of the motor body and the seat body during installation. Therefore, the concentricity of the output shaft and the transmission shaft after assembly can be guaranteed, thus avoiding the service life of the rotating system being affected by the concentricity deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the three-dimensional structure of a valve motor with an integrated encoder in an embodiment of the present application;

[0028] Figure 2 This is a schematic plan view of a valve motor with an integrated encoder in an embodiment of the present application, with the housing hidden;

[0029] Figure 3 This is a cross-sectional view of a valve motor with an integrated encoder in an embodiment of the present application (the output shaft and the transmission shaft are in a connected state);

[0030] Figure 4 for Figure 3 A partial enlarged view of the corresponding center positioning component;

[0031] Figure 5 This is a schematic diagram of an exploded view of the components of a valve motor with an integrated encoder in an embodiment of the present application;

[0032] Figure 6 It is a plan view of a seat body corresponding to a valve motor with an integrated encoder in an embodiment of the present application;

[0033] Figure 7 for Figure 6 Sectional view in the AA direction;

[0034] Figure 8 It is a plan view of a shaft frame corresponding to a valve motor with an integrated encoder in an embodiment of the present application;

[0035] Fig. 9 for Figure 8 Cross-sectional view in the BB direction;

[0036] Fig.10 This is a schematic diagram of an output shaft and a transmission shaft of a valve motor with an integrated encoder in an embodiment of the present application in a disengaged state (the second adjusting cap moves following the first adjusting cap);

[0037] Fig.11 This is a schematic diagram of an output shaft and a transmission shaft of a valve motor with an integrated encoder in an embodiment of the present application in a disengaged state (the second adjustment cap does not move with the first adjustment cap).

[0038] In the figure: 1-motor body; 11-output shaft; 12-housing; 121-guide plate; 13-end cover; 131-connecting ear; 14-first bearing; 15-cooling fan; 151-cover;

[0039] 2-seat body; 21-first plate body; 211-second sliding sleeve; 212-isolating rod; 213-first sliding sleeve; 214-limiting platform; 22-second plate body; 220-bearing mounting hole; 221-third bearing; 222-connecting ring platform; 223-threaded hole; 224-arc-shaped limiting groove; 23-connecting rod; 24-first adjusting cap; 241-annular sleeve body; 242-annular limiting plate; 243-first annular column; 244-convex portion; 25-second adjusting cap; 251-second annular column; 252-driving section; 253-driving wrench; 254-driving rod; 255-sleeve body; 26-pressure cover; 27-cover shell; 271-mounting sleeve; 272-semicircular cover; 273-ventilation hole; 274-fixing platform;

[0040] 3-shaft frame; 31-shaft seat; 310-bearing sleeve hole; 311-second bearing; 312-connecting plate body; 313-bearing seat; 314-annular limiting cap; 32-annular plate; 33-guide rod; 34-reset spring;

[0041] 4-transmission shaft; 41-first limiting step; 42-limiting sleeve; 421-first limiting sleeve; 422-second limiting sleeve; 43-second limiting step;

[0042] 5-encoder assembly; 51-light source; 52-optical code disk; 53-photosensitive element; 54-circuit board;

[0043] 6-center positioning assembly; 61-first connecting rod; 62-second connecting rod; 621-side; 63-pressure wheel; 64-wheel frame; 641-connecting seat; 642-connecting plate; 643-fastening screw; DETAILED DESCRIPTION

[0044] Combination Figures 1 to 3 A valve motor with an integrated encoder shown in the figure comprises a motor body 1, wherein the motor body 1 comprises a housing 12 and an output shaft 11, an end cover 13 is provided at one end of the housing 12, and the output shaft 11 extends out of the end cover 13 along the x direction;

[0045] Also includes:

[0046] The seat body 2 is arranged on the outer side of the end cover 13, and the seat body 2 includes a first plate body 21;

[0047] The shaft frame 3 is slidably arranged on the seat body 2, and the sliding direction of the shaft frame 3 is parallel to the x direction; the shaft frame 3 includes a shaft seat 31 arranged between the first plate body 21 and the end cover 13,

[0048] The transmission shaft 4 is rotatably mounted in the shaft seat 31. The transmission shaft 4 is axially aligned with the output shaft 11. A mutually adaptable connection structure is provided between the opposite ends of the transmission shaft 4 and the output shaft 11. The transmission shaft 4 extends out of the seat body 2 at one end away from the output shaft 11 to be transmission-connected with an external driven member.

[0049] The encoder assembly 5 includes an optical code disk 52 and a light source 51 and a photosensitive element 53 facing each other. The light source 51 and the photosensitive element 53 are respectively arranged on the opposite end surfaces between the shaft seat 31 and the first plate body 21. The optical code disk 52 is installed on the transmission shaft 4, and the optical code disk 52 is arranged between the light source 51 and the photosensitive element 53.

[0050] A group of center positioning assemblies 6 arranged uniformly around the circumference of the output shaft 11, the number of the center positioning assemblies 6 is at least 3, the center positioning assembly 6 comprises a pressure wheel 63 and a transmission connecting rod assembly, the pressure wheel 63 is mounted on the transmission connecting rod assembly, and the transmission connecting rod assembly is connected to the end cover 13 and the shaft seat 31;

[0051] The shaft seat 31 moves toward the end cover 13 until the transmission shaft 4 and the output shaft 11 are connected. During this process, the transmission connecting rod assembly is used to drive a set of pressure wheels 63 to be pressed on the side of the output shaft 11.

[0052] In this embodiment, the output shaft 11 and the transmission shaft 4 are connected in a concave-convex sleeve manner at the end, and the cross-sectional shape of the connection structure is a regular hexagon.

[0053] Therefore, in the present application, by setting a seat body 2 which is separate from the motor body 1, slidingly setting an axle frame 3 on the seat body 2, setting a transmission shaft 4 which drives the encoder assembly 5 to work on the axle frame 3, and the encoder assembly 5 is arranged as a whole between the first plate body 21 and the axle seat 31 and separated from the motor body 1, the heat generated by the motor body 1 can be effectively isolated. Prevent the encoder assembly 5 from being too close to the motor body 1 and causing overheating failure. By setting a seat body 2 and axle frame 3 which are independent of the motor body 1, and rotatably installing the transmission shaft 4 on the axle frame 3, the stability of the rotation of the transmission shaft 4 can be ensured.

[0054] When in use, the motor body 1 and the seat body 2 are roughly positioned and installed, the output shaft 11 and the transmission shaft 4 are axially opposite, and the shaft frame 3 is moved to connect the transmission shaft 4 and the output shaft 11. In this process, the transmission connecting rod assembly is used to drive a group of pressing wheels 63 to press on the side of the output shaft 11. When all the pressing wheels 63 are pressed on the side of the output shaft 11, it means that the concentricity of the output shaft 11 and the transmission shaft 4 is qualified. At this time, the position of the motor body 1 and the seat body 2 is locked and fixed. At this time, the transmission connecting rod assembly is used as a support frame set between the end cover 13 and the shaft seat 31 to limit the jumping of the end of the output shaft 11 close to the transmission shaft 4 during the rotation process. If a pressure wheel 63 is pressed on the side of the output shaft 11, while other pressure wheels 63 are not in contact with the output shaft 11, it means that the coaxiality of the output shaft 11 and the transmission shaft 4 is unqualified, and the relative position of the motor body 1 and the seat body 2 needs to be fine-tuned so that when the output shaft 11 and the transmission shaft 4 are connected, all the pressure wheels 63 are pressed on the output shaft 11, and the position where a group of pressure wheels 63 are not in contact with the output shaft 11 corresponds to the relative fine-tuning direction of the motor body 1 and the seat body 2, which is convenient for judging the direction of adjusting the relative position of the motor body 1 and the seat body 2 during installation. Therefore, the concentricity of the output shaft 11 and the transmission shaft 4 after assembly can be guaranteed, avoiding the service life of the rotating system affected by the concentricity deviation.

[0055] Combination Figure 3 and Figure 4 As shown, in this embodiment, when a group of pressure wheels 63 are pressed on the side of the output shaft 11, the pressure wheels 63 are parallel to the output shaft 11, and the contact position between the pressure wheels 63 and the output shaft 11 is on the virtual plane where the axis cores of the pressure wheels 63 and the output shaft 11 are located. When working, the pressure wheels 63 are positively pressed on the output shaft 11, and the output shaft 11 drives the pressure wheels 63 to rotate. In this embodiment, the pressure wheels 63 are bearings with plastic coated outer rings to ensure the stability of the rotation of the pressure wheels 63 and the tightness of the contact between the pressure wheels 63 and the side of the output shaft 11. The number of pressure wheels 63 is 3.

[0056] Combination Figure 4 and Fig.10 As shown, in this embodiment, the transmission connecting rod assembly includes:

[0057] A first connecting rod 61, the first connecting rod 61 is pivotally connected to the end cover 13, and a group of first connecting rods 61 are arranged in an array around the circumference of the output shaft 11;

[0058] A second connecting rod 62 corresponding to the first connecting rod 61, the second connecting rod 62 is pivotally connected to the shaft seat 31, and the second connecting rod 62 is rotatably connected to the first connecting rod 61 around the shaft core a;

[0059] A wheel frame 64 is provided on the second connecting rod 62 . The wheel frame 64 is arranged at a position where the second connecting rod 62 is rotatably connected to the first connecting rod 61 . The pressure wheel 63 is rotatably mounted on an end of the wheel frame 64 away from the second connecting rod 62 .

[0060] After the output shaft 11 is connected to the transmission shaft 4, the first connecting rod 61 and the second connecting rod 62 are used to support the pressure wheel 63 to press on the output shaft 11 to ensure stability. In this embodiment, a first bearing 14 is connected between the end cover 13 and the output shaft 11 to ensure the position accuracy of the output shaft 11 relative to the end cover 13. The first connecting rod 61 extends in an arc, and the extension direction of the first connecting rod 61 corresponds to the arc b. The wheel frame 64 extends in a straight line, and the extension direction of the wheel frame 64 corresponds to the straight line c. The intersection of the arc b and the straight line c is on the shaft core a, and they are tangent at the intersection.

[0061] Combination Figure 4 and Fig.10 As shown, in this embodiment, the wheel frame 64 can be rotated and adjusted around the axis a on the second connecting rod 62. Specifically, the second connecting rod 62 is provided with a side surface 621 extending around the axis a at one end near the first connecting rod 61; the wheel frame 64 includes a connecting seat 641, a connecting plate 642 is provided on the connecting seat 641, and the connecting plate 642 is pivotally connected to the second connecting rod 62 around the axis a. A set screw 643 is threadedly connected to the connecting seat 641, and the front end of the set screw 643 abuts against the side surface 621. The set screw 643 is used to lock the wheel frame 64 to the end of the second connecting rod 62 in the circumferential direction, and the side surface 621 is provided with anti-slip convex patterns to ensure the tightness of the set screw 643 locked to the second connecting rod 62. The circumferential position of the wheel frame 64 relative to the end of the second connecting rod 62 is rotated to adjust the circumferential position of the wheel frame 64 relative to the end of the second connecting rod 62 to ensure the parallelism of the axis of the pressure wheel 63 and the output shaft 11 when the pressure wheel 63 is pressed on the output shaft 11.

[0062] In this embodiment, the connecting plates 642 are arranged in pairs on the connecting seat 641 , the second connecting rod 62 is arranged between a pair of connecting plates 642 , and the pressure wheel 63 is rotatably mounted on a side of the connecting seat 641 away from the connecting plates 642 .

[0063] Combination Figure 3 , Figures 5 to 9 As shown, in this embodiment, a second bearing 311 is provided in the shaft seat 31, and the transmission shaft 4 is passed through and installed in the second bearing 311, and the shaft seat 31 and the transmission shaft 4 are axially locked;

[0064] The seat body 2 includes a second plate body 22, which is arranged on the side of the first plate body 21 away from the shaft seat 31. The first plate body 21 and the second plate body 22 are fixedly connected by a group of connecting rods 23. A bearing mounting hole 220 is provided on the second plate body 22. A third bearing 221 is installed in the bearing mounting hole 220 by interference fit. The axial extension depth of the bearing mounting hole 220 is greater than the width of the third bearing 221. The end of the transmission shaft 4 away from the shaft seat 31 is installed in the inner hole of the third bearing 221 by interference fit; the two ends of the second plate body 22 are respectively connected with an adjustment cap, and the adjustment cap can be adjusted along the x direction Move toward adjustment, an annular column is provided at one end of the adjusting cap near the third bearing 221, and one end of the annular column near the third bearing 221 is in contact with the outer ring end wall of the third bearing 221; a first limiting step 41 is provided at one end of the transmission shaft 4 corresponding to the third bearing 221 near the first plate body 21, and the first limiting step 41 is in contact with the end face of the inner ring of the third bearing 221, and the transmission shaft 4 is axially penetrated by the adjusting cap; the adjusting cap is used to adjust the position of the third bearing 221 in the bearing mounting hole 220 to drive the transmission shaft 4 and the shaft frame 3 to move, so as to switch the connection or disconnection between the transmission shaft 4 and the output shaft 11.

[0065] The traditional debugging method is to remove the seat body 2 and the shaft frame 3 as a whole and test the runout of the output shaft 11 and the transmission shaft 4 respectively. Then the seat body 2 and the shaft frame 3 are reconnected to the motor body 1, and the centering is re-aligned during the connection process to ensure the concentricity of the output shaft 11 and the transmission shaft 4, which has the disadvantage of being cumbersome to operate. Based on the above device, its operation method includes the following steps:

[0066] First, the adjustment cap of the third bearing 221 away from the output shaft 11 is adjusted and moved in the x direction to make room for the third bearing 221 to move in the x direction;

[0067] Then adjust and move the adjustment cap on the side of the third bearing 221 close to the output shaft 11, so that the annular column pushes the outer ring end wall of the third bearing 221 to move in the x direction. In this process, the shaft seat 31 and the transmission shaft 4 move until the transmission shaft 4 is separated from the output shaft 11. After separation, both ends of the transmission shaft 4 are still limited by the second bearing 311 and the third bearing 221, and the output shaft 11 and the transmission shaft 4 can be directly tested for runout. When testing the runout of the transmission shaft 4, the drive motor is connected to the end of the transmission shaft 4 away from the motor body 1. After the test is completed, the reverse operation is performed in the same way to connect the transmission shaft 4 and the output shaft 11.

[0068] In this process, since the bearing mounting hole 220 and the third bearing 221 are interference fit, the transmission shaft 4 and the shaft seat 31 are driven to move by the movement of the third bearing 221 in the bearing mounting hole 220, which can ensure the stability of the concentricity of the transmission shaft 4 and the shaft seat 31 during the movement. Therefore, in the process of completing the detection of the secondary docking of the transmission shaft 4 and the output shaft 11, there is no need to readjust the relative position between the first plate body 21 and the motor body 1. While ensuring the concentricity, the efficiency of the separation and secondary docking of the output shaft 11 and the transmission shaft 4 is improved. In this embodiment, a first sleeve 213 is provided on the first plate body 21, and the transmission shaft 4 is slidably inserted into the first sleeve 213.

[0069] Specifically, in this embodiment, the adjustment cap includes a first adjustment cap 24 arranged at one end of the second plate body 22 away from the first plate body 21, and a connecting ring platform 222 is extended from one end of the second plate body 22 near the first adjustment cap 24. The bearing mounting hole 220 is arranged on the connecting ring platform 222 and is concentrically arranged with the connecting ring platform 222. The first adjustment cap 24 includes an annular sleeve 241 and an annular limiting plate 242 extending radially inwardly from the annular sleeve 241. The annular sleeve 241 is sleeved on the connecting ring platform 222 and is threadedly connected to the connecting ring platform 222. The annular column includes a first annular column 243 that abuts against the side of the third bearing 221 away from the first plate body 21, and the first annular column 243 is abutted and connected with the annular limiting plate 242.

[0070] The adjusting cap also includes a second adjusting cap 25 arranged at one end of the second plate body 22 near the first plate body 21. A threaded hole 223 is provided on the second plate body 22. The threaded hole 223 is arranged at one end of the bearing mounting hole 220 near the first plate body 21. The radial dimension of the threaded hole 223 is larger than the bearing mounting hole 220. The second adjusting cap 25 is threadedly connected in the threaded hole 223. The annular column includes a second annular column 251. The second annular column 251 is integrally arranged at one end of the second adjusting cap 25 near the third bearing 221.

[0071] With the output shaft 11 and the transmission shaft 4 connected as the initial state, the process of separating the output shaft 11 and the transmission shaft 4 is as follows: firstly, the first adjusting cap 24 is screwed to move it in the x direction, so as to make room for the third bearing 221 to move in the bearing mounting hole 220, and then the second adjusting cap 25 is screwed to move it in the x direction. Fig.10As shown, the third bearing 221 is pushed by the second annular column 251 to move until the third bearing 221, the first annular column 243 and the first adjusting cap 24 are axially abutted. At this time, the transmission shaft 4 moves to separate from the output shaft 11, and a set of pressure wheels 63 are separated from the side of the output shaft 11. The steps of reconnecting the output shaft 11 and the transmission shaft 4 are as follows: screw the second adjusting cap 25 to move it toward the first plate body 21, so that the third bearing 221 moves toward the side of the first plate body 21 in the bearing mounting hole 220, and then screw the first adjusting cap 24 to move it toward the first plate body 21, so as to push the first annular column 243 and the third bearing 221 to move in the bearing mounting hole 220, so that the pressure wheel 63 is pressed against the side of the output shaft 11 and the output shaft 11 is connected to the transmission shaft 4. Specifically, a limit platform 214 is provided at one end of the first plate body 21 near the annular plate 32 , and the limit platform 214 is used to limit the movement of the second adjustment cap 25 toward the first plate body 21 . When the output shaft 11 is connected to the transmission shaft 4 , the second adjustment cap 25 abuts against the limit platform 214 .

[0072] Combination Figure 8 As shown, in this embodiment, the shaft frame 3 includes an annular plate 32, which is arranged between the first plate body 21 and the second plate body 22. The shaft seat 31 and the annular plate 32 are fixedly connected by a group of guide rods 33 extending along the x direction; a second sliding sleeve 211 corresponding to the guide rod 33 is installed on the first plate body 21, and the guide rod 33 is slidably penetrated on the second sliding sleeve 211;

[0073] It also includes a set of return springs 34, which are sleeved on the guide rod 33, and the two ends of the return spring 34 are in contact with the opposite end faces between the first plate body 21 and the guide rod 33; the shaft seat 31 is provided with a bearing sleeve hole 310, and the second bearing 311 is installed in the bearing sleeve hole 310. The inner wall of the bearing sleeve hole 310 is provided with an annular limiting convex portion, which is in contact with the outer ring end face of the second bearing 311 near the end cover 13; the transmission shaft 4 is sleeved with a limiting sleeve 42, which is in contact with the inner ring end face of the second bearing 311 near the annular plate 32. Specifically, the first sliding sleeve 213 and the second sliding sleeve 211 are linear bearings to ensure the stability of the sliding of the moving parts on the first plate body 21. The return spring 34 is used to push the annular plate 32 and transmit the thrust to the transmission shaft 4 through the guide rod 33, the shaft seat 31, and the second bearing 311 in sequence, so that the transmission shaft 4 is subjected to the thrust in the x direction. When the first adjustment cap 24 moves in the x direction to make room for the third bearing 221 to move, Fig.11 As shown, the transmission shaft 4 is directly pushed by the force of the return spring 34 to move the third bearing 221 and the first adjustment cap 24 synchronously in the x direction, and the separation is automatically completed to improve the separation efficiency. At this time, the second adjustment cap 25 plays a role of insurance when the return spring 34 fails and the return spring 34 elastic force cannot push the third bearing 221.

[0074] In this embodiment, the shaft seat 31 includes a connecting plate body 312 and a bearing seat 313 arranged on the connecting plate body 312, the second connecting rod 62 is pivotally connected to the connecting plate body 312, the second bearings 311 are arranged in pairs, the annular limiting convex portion is arranged between a pair of second bearings 311, and also includes an annular limiting cap 314 screwed on one end of the proximal cover 13 on the bearing seat 313, and the inner edge of the annular limiting cap 314 extends to be provided with an annular limiting convex portion abutting against the end face of the outer ring of the second bearing 311. The transmission shaft 4 is provided with a second limiting step 43, the second limiting step 43 is arranged at one end of the proximal cover 13 of a pair of second bearings 311, and the second limiting step 43 abuts against the inner ring of the second bearing 311. The limiting sleeve 42 includes a first limiting sleeve 421 arranged between the pair of second bearings 311 and a second limiting sleeve 422 arranged at one end of the proximal annular plate 32 of the pair of second bearings 311, and the optical code disk 52 is installed on the second limiting sleeve 422.

[0075] like Figure 7 As shown, in this embodiment, a driving section 252 is provided on the second adjusting cap 25, and a driving wrench 253 is sleeved on the driving section 252. Rotating the driving wrench 253 can drive the second adjusting cap 25 to rotate through the driving section 252. A driving rod 254 extending along the x direction is provided on the driving wrench 253. The second plate 22 is provided with an arc-shaped limiting groove 224 corresponding to the driving rod 254, and the width is adapted to the radial dimension of the driving rod 254. The arc corresponding to the arc-shaped limiting groove 224 is concentric with the transmission shaft 4. The driving rod 254 passes through the arc-shaped limiting groove 224. A sleeve 255 is sleeved on the driving rod 254. The sleeve 255 is provided with a through screw hole and is threadedly connected to the driving rod 254. The sleeve 255 abuts against the end of the second plate 22 away from the first plate 21. The end of the second plate 22 away from the first plate 21 is detachably connected with a pressure cover 26, and the pressure cover 26 axially abuts against the end of the sleeve 255 away from the second plate 22.

[0076] The second adjustment cap 25 is provided with an angle adjustment slot, which is arranged at the axial end of the driving section 252 . When the driving wrench 253 moves to the position of the angle adjustment slot, the driving wrench 253 and the driving section 252 are circumferentially unlocked.

[0077] Specifically, the shape of the notch corresponding to the driving wrench 253 is adapted to the cross-sectional shape of the driving section 252, and the cross-sectional shape of the driving section 252 is a regular hexagon. Since the second adjusting cap 25 is disposed as a whole between the first plate body 21 and the second plate body 22, and there is an annular plate 32 on the outside, it is difficult to insert a tool to rotate the second adjusting cap 25. In this application, the driving rod 254 is rotated in the arc-shaped limiting groove 224 to drive the driving wrench 253 to rotate the driving section 252 and the second adjusting cap 25. When the driving rod 254 rotates in the arc-shaped limiting groove 224 until the end of the arc-shaped limiting groove 224 cannot be rotated further, the driving wrench 253 is axially moved to the angle adjustment groove. In this embodiment, the angle adjustment groove is the threaded shaft section of the second adjustment cap 25 corresponding to the threaded hole 223. At this time, the driving wrench 253 and the driving section 252 are unlocked circumferentially, and then the driving rod 254 is rotated in the opposite direction to the other end of the arc-shaped limiting groove 224, and then the driving wrench 253 is axially moved to be sleeved on the driving section 252. At this time, the driving rod 254 is moved again to allow the driving section 252 to continue rotating. The driving section 252 is provided with a flange near the end of the first plate body 21 to limit the movement of the driving wrench 253. The pressure cover 26 is provided with a through groove adapted to the arc-shaped limiting groove 224.

[0078] In this embodiment, the outer wall of the annular sleeve 241 is provided with a convex portion 244. When the gland 26 is connected to the output shaft 11 and the transmission shaft 4, the gland 26 is connected to the second plate 22 by screws (not shown), and the gland 26 axially abuts against the outer side of the convex portion 244. The gland 26 abuts against the outer side of the convex portion 244 to prevent the first adjustment cap 24 from loosening. When adjusting the first adjustment cap 24, the gland 26 needs to be removed first.

[0079] like Figure 3 As shown, in this embodiment, a cooling fan 15 is provided at one end of the shell 12 away from the end cover 13, and a group of circumferentially spaced guide plates 121 are provided on the side wall of the shell 12. The guide plates 121 extend along the x direction to one end of the shell 12 proximal to the end cover 13, and the air outlet of the cooling fan 15 is annular and directly faces the guide plates 121; the distance from the root of the guide plate 121 to the axis core of the transmission shaft 4 is d, the distance from the outer edge of the end cover 13 and the shaft seat 31 to the axis core of the transmission shaft 4 is less than d, and the distance from the outer edge of the first plate body 21 to the axis core of the transmission shaft 4 is greater than d; the photosensitive element 53 is arranged on the circuit board 54, and the circuit board 54 is installed at one end of the proximal end cover 13 of the first plate body 21 through a group of isolation rods 212, and the isolation rods 212 are arranged axially between the circuit board 54 and the first plate body 21, and a heat dissipation cavity is provided between the circuit board 54 and the first plate body 21.

[0080] The cooling fan 15 is used to dissipate heat for the motor body 1 and the encoder assembly 5. The distance from the outer edge of the first plate body 21 to the axis core of the transmission shaft 4 is greater than d, so that the wind blown out by the cooling fan 15 is guided to the heat dissipation cavity between the circuit board 54 and the first plate body 21 to take away the heat of the circuit board 54. Specifically, the cooling fan 15 is a fan driven by an independent motor. The cooling fan 15 is arranged in a cover body 151. The cover body 151 is fixed to the end of the housing 12 away from the end cover 13. The end of the cover body 151 near the housing 12 is open, and the edge of the opening is adapted to the outer end of the guide plate 121. Therefore, the open end of the cover body 151 forms an annular air outlet facing the guide plate 121.

[0081] like Figure 3 and Figure 5 As shown, in this embodiment, a cover 27 is installed on the first plate body 21, and the cover 27 includes a pair of half shells connected up and down, and the half shells include an axially connected mounting sleeve 271 and a semicircular cover 272, and the mounting sleeve 271 is provided with a cavity for accommodating the first plate body 21, and the mounting sleeve 271 is sleeved on the first plate body 21, and the semicircular cover 272 is a semicircular shell extending in the x direction, and a pair of semicircular covers 272 form a cylindrical shell cavity with a radial dimension greater than d, and the shaft seat 31 is in the cylindrical shell cavity, and the end cover 13 is radially extended to be provided with a group of connecting ears 131, and the semicircular cover 272 is connected to the connecting ears 131 at one end away from the mounting sleeve 271, and the semicircular cover 272 plays a role of guiding. The semicircular cover 272 on the upper end side of the semi-shell is provided with a vent 273, and the bottom of the semicircular cover 272 on the lower end side of the semi-shell is provided with a fixing platform 274.

[0082] The technical principles of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without creative work, and these methods will fall within the scope of protection of the present invention.

Claims

1. A valve motor with an integrated encoder, comprising a motor body (1), the motor body (1) comprising a housing (12) and an output shaft (11), an end cover (13) being provided at one end of the housing (12), and the output shaft (11) extending out of the end cover (13) along the x-direction; It is characterized in that Also includes: A seat body (2), the seat body (2) being arranged on the outside of the end cover (13), the seat body (2) comprising a first plate body (21); an axis frame (3), the axis frame (3) being slidably disposed on the seat body (2), the sliding direction of the axis frame (3) being parallel to the x-direction; the axis frame (3) comprising an axis seat (31) disposed between the first plate body (21) and the end cover (13), A transmission shaft (4), the transmission shaft (4) being rotatably mounted in a shaft seat (31), the transmission shaft (4) being axially aligned with the output shaft (11), and mutually adaptable connection structures being provided between opposite ends of the transmission shaft (4) and the output shaft (11); an end of the transmission shaft (4) away from the output shaft (11) extending out of the seat body (2); An encoder assembly (5), the encoder assembly (5) comprising an optical code disc (52) and a light source (51) and a photosensitive element (53) facing each other, the light source (51) and the photosensitive element (53) being respectively arranged on opposite end surfaces between the shaft seat (31) and the first plate body (21), the optical code disc (52) being mounted on the transmission shaft (4), and the optical code disc (52) being arranged between the light source (51) and the photosensitive element (53); A group of center positioning assemblies (6) arranged in a uniform array around the circumference of the output shaft (11), the number of the center positioning assemblies (6) being at least 3, the center positioning assemblies (6) comprising a pressure wheel (63) and a transmission connecting rod assembly, the pressure wheel (63) being mounted on the transmission connecting rod assembly, and the transmission connecting rod assembly being connected to the end cover (13) and the shaft seat (31); The shaft seat (31) moves toward the end cover (13) until the transmission shaft (4) and the output shaft (11) are connected, and during this process, the transmission connecting rod assembly is used to drive a set of pressure wheels (63) to be pressed onto the side of the output shaft (11); The transmission connecting rod assembly comprises: A first connecting rod (61), the first connecting rod (61) being pivotally connected to the end cover (13), and a group of the first connecting rods (61) being arranged in a circular array around the output shaft (11); a second connecting rod (62) corresponding one-to-one to the first connecting rod (61), the second connecting rod (62) being pivotally connected to the shaft seat (31), and the second connecting rod (62) being rotatably connected to the first connecting rod (61) around an axis a; A wheel frame (64) is provided on the second connecting rod (62), and the wheel frame (64) is arranged at a position where the second connecting rod (62) is rotatably connected to the first connecting rod (61), and the pressure wheel (63) is rotatably mounted on an end of the wheel frame (64) away from the second connecting rod (62); A second bearing (311) is provided in the shaft seat (31), the transmission shaft (4) is inserted into and installed in the second bearing (311), and the shaft seat (31) and the transmission shaft (4) are axially locked; The seat body (2) comprises a second plate body (22), the second plate body (22) being arranged on a side of the first plate body (21) away from the shaft seat (31), the first plate body (21) and the second plate body (22) being fixedly connected, a bearing mounting hole (220) being provided on the second plate body (22), a third bearing (221) being installed in the bearing mounting hole (220) by interference fit, the axial extension depth of the bearing mounting hole (220) being greater than the width of the third bearing (221), and one end of the transmission shaft (4) away from the shaft seat (31) being installed in the inner hole of the third bearing (221) by interference fit; The second plate body (22) is connected to an adjustment cap at each end, the adjustment cap can be adjusted and moved along the x direction, an annular column is provided at one end of the adjustment cap close to the third bearing (221), and the end of the annular column close to the third bearing (221) abuts against the outer ring end wall of the third bearing (221); The transmission shaft (4) is provided with a first limiting step (41) at one end thereof corresponding to the third bearing (221) and close to the first plate body (21), the first limiting step (41) abuts against the end surface of the inner ring of the third bearing (221), and the transmission shaft (4) is axially passed through the adjustment cap; The adjusting cap is used to adjust the position of the third bearing (221) in the bearing mounting hole (220) to drive the transmission shaft (4) and the shaft frame (3) to move, thereby switching the connection or disconnection between the transmission shaft (4) and the output shaft (11).

2. A valve motor with integrated encoder according to claim 1, characterized in that: When a set of pressing wheels (63) are pressed onto the side surface of the output shaft (11), the axis line of the pressing wheel (63) is parallel to the output shaft (11), and the contact position between the pressing wheel (63) and the output shaft (11) is on a virtual plane where the axis line of the pressing wheel (63) and the axis line of the output shaft (11) are located.

3. The valve motor with integrated encoder according to claim 1, characterized in that: The wheel frame (64) can be rotated and adjusted around the axis a on the second connecting rod (62).

4. A valve motor with integrated encoder according to claim 3, characterized in that: The second connecting rod (62) is provided with a side surface (621) extending around the circumference of the shaft core a at one end close to the first connecting rod (61); The wheel frame (64) comprises a connecting seat (641), a connecting plate (642) is provided on the connecting seat (641), the connecting plate (642) is pivotally connected to the second connecting rod (62) around the axis a, and a fixing screw (643) is threadedly connected to the connecting seat (641), and the front end of the fixing screw (643) abuts against the side surface (621).

5. The valve motor with integrated encoder according to claim 1, characterized in that: The adjusting cap comprises a first adjusting cap (24) arranged at an end of the second plate body (22) away from the first plate body (21); a connecting ring platform (222) is extended from an end of the second plate body (22) near the first adjusting cap (24); the bearing mounting hole (220) is arranged on the connecting ring platform (222); the first adjusting cap (24) comprises an annular sleeve (241) and an annular limiting plate (242) extending radially inward from the annular sleeve (241); the annular sleeve (241) is sleeved on the connecting ring platform (222) and is threadedly connected to the connecting ring platform (222); the annular column comprises a first annular column (243) abutting against a side of the third bearing (221) away from the first plate body (21); the first annular column (243) is abuttingly connected to the annular limiting plate (242); The adjusting cap further comprises a second adjusting cap (25) arranged at one end of the second plate body (22) near the first plate body (21); a threaded hole (223) is provided on the second plate body (22); the threaded hole (223) is arranged at one end of the bearing mounting hole (220) near the first plate body (21); a radial dimension of the threaded hole (223) is larger than that of the bearing mounting hole (220); the second adjusting cap (25) is threadedly connected in the threaded hole (223); and the annular column comprises a second annular column (251); the second annular column (251) is arranged at one end of the second adjusting cap (25) near the third bearing (221).

6. A valve motor with integrated encoder according to claim 5, characterized in that: The shaft frame (3) comprises an annular plate (32), the annular plate (32) being arranged between a first plate body (21) and a second plate body (22), the shaft seat (31) and the annular plate (32) being fixedly connected via a group of guide rods (33) extending along the x-direction; a second sliding sleeve (211) corresponding to the guide rods (33) is mounted on the first plate body (21), and the guide rods (33) are slidably arranged on the second sliding sleeve (211); It also includes a set of return springs (34), wherein the return springs (34) are sleeved on the guide rod (33), and both ends of the return springs (34) abut against opposite end surfaces between the first plate body (21) and the guide rod (33); The shaft seat (31) is provided with a bearing sleeve hole (310), the second bearing (311) is installed in the bearing sleeve hole (310), the inner wall of the bearing sleeve hole (310) is provided with an annular limiting convex portion, and the annular limiting convex portion abuts against the end face of the outer ring of the second bearing (311) at one end of the proximal cover (13); A limiting sleeve (42) is sleeved on the transmission shaft (4), and the limiting sleeve (42) abuts against an end face of an inner ring of the second bearing (311) near the annular plate (32).

7. A valve motor with integrated encoder according to claim 6, characterized in that: The second adjusting cap (25) is provided with a driving section (252), and a driving wrench (253) is sleeved on the driving section (252). The driving wrench (253) can be rotated to drive the second adjusting cap (25) to rotate via the driving section (252). The driving wrench (253) is provided with a driving rod (254) extending along the x-direction. The second plate (22) is provided with an arc-shaped limiting groove (224) corresponding to the driving rod (254) and having a width adapted to the radial dimension of the driving rod (254). The arc-shaped limiting groove (224) corresponds to a circular The arc is concentric with the transmission shaft (4), the driving rod (254) passes through the arc-shaped limiting groove (224), a sleeve (255) is sleeved on the driving rod (254), the sleeve (255) is provided with a through screw hole and is threadedly connected to the driving rod (254), the sleeve (255) abuts against an end of the second plate (22) away from the first plate (21), and a pressure cover (26) is detachably connected to an end of the second plate (22) away from the first plate (21), and the pressure cover (26) axially abuts against an end of the sleeve (255) away from the second plate (22); The second adjustment cap (25) is provided with an angle adjustment slot, the angle adjustment slot being arranged at the axial end of the drive section (252), and the drive wrench (253) is moved to the position of the angle adjustment slot, and the drive wrench (253) and the drive section (252) are circumferentially unlocked.

8. The valve motor with integrated encoder according to claim 1, characterized in that: A cooling fan (15) is provided at one end of the shell (12) away from the end cover (13); a group of guide plates (121) arranged at intervals in the circumferential direction are provided on the side wall of the shell (12); the guide plates (121) extend along the x direction to one end of the shell (12) proximal to the end cover (13); an air outlet of the cooling fan (15) faces the guide plates (121); The distance between the root of the guide plate (121) and the core of the transmission shaft (4) is d, the distance between the outer edge of the end cover (13) and the shaft seat (31) and the core of the transmission shaft (4) is less than d, and the distance between the outer edge of the first plate body (21) and the core of the transmission shaft (4) is greater than d; The photosensitive element (53) is arranged on a circuit board (54); the circuit board (54) is mounted on one end of the proximal cover (13) of the first plate body (21) via a group of isolation rods (212); the isolation rods (212) are arranged axially between the circuit board (54) and the first plate body (21); and a heat dissipation cavity is provided between the circuit board (54) and the first plate body (21).

Images