Transmission device and manual valve driving system

Abstract

The invention relates to the technical field of transmission devices, in particular to a transmission device and a manual valve driving system.The transmission device comprises a shell, a first opening end of the shell is arranged to be in sealed butt joint with the end face of a valve hole of a valve body; the transmission mechanism comprises a screw rod which is rotatably arranged in the shell and is used for being in transmission fit with the motor; the moving nut is mounted on the screw rod, and the reciprocating motion of the moving nut in the axial direction of the screw rod can be realized by changing the rotating direction of the screw rod; the push-pull rod is arranged on the moving nut, and the front end of the push-pull rod is used for being connected with a valve element of the valve body. According to the scheme, the defects that in the prior art, a manual multi-way valve is high in transformation cost, poor in system compatibility, unstable in control precision and the like are overcome, digital upgrading and transformation of an original manual multi-way valve are achieved, and the automation level and the control precision of equipment are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of transmission devices, and particularly to a transmission device and a manual valve drive system. Background Art

[0002] In traditional hydraulic control systems, a manual multi-way valve drives a valve core to move by manually operating a handle to control the opening and closing of a flow passage. However, this method is difficult to meet the requirements of the automation and intelligent upgrade of modern equipment. Especially in the fields of coal mining machinery, construction machinery, and agricultural machinery, the response speed, accuracy, and stability of the manual valve cannot meet the real-time control requirements. In addition, if the existing manual valve is digitally transformed, it usually requires replacing the entire valve body or valve core structure, resulting in the inability to reuse the original system components, greatly increasing the cost and complexity.

[0003] Although there are alternative solutions such as electromagnetic pilot valves and stepper motor drives to try to solve the above problems, these methods still have deficiencies. Although the electromagnetic pilot valve can partially achieve automatic control, due to the hysteresis and eddy current phenomena in the proportional electromagnet drive, its control accuracy is easily affected, and its performance decays significantly in high-temperature and high-frequency environments. Long-term operation may also cause safety hazards due to heat generation. The stepper motor drive faces the problem of insufficient output torque and is difficult to effectively drive the valve core under large load conditions. Moreover, "step loss" may occur during high-speed movement, affecting the reliability of the system. More importantly, these solutions often require large-scale transformation of the original valve body and cannot be directly compatible with the manual valve in-situ. Summary of the Invention

[0004] The present invention provides a transmission device and a manual valve drive system to solve the defects in the prior art such as high transformation cost, poor system compatibility, and unstable control accuracy of the manual multi-way valve, realize the digital upgrade transformation of the original manual multi-way valve, and improve the automation level and control accuracy of the equipment.

[0005] The present invention provides a transmission device, including: a housing, the first opening end of which is set to be able to be hermetically docked with the valve hole end face of the valve body; a transmission mechanism, including: a lead screw rotatably arranged in the housing for transmission cooperation with the motor; a moving nut installed on the lead screw, and by changing the rotation direction of the lead screw, the moving nut can be made to reciprocate along the axial direction of the lead screw; a push-pull rod arranged on the moving nut, and the front end of the push-pull rod is used to connect the valve core of the valve body.

[0006] According to an embodiment of the present invention, a first bearing seat and a second bearing seat are arranged in the housing; the lead screw is supported between the first bearing seat and the second bearing seat.

[0007] According to an embodiment of the present invention, the transmission mechanism includes a guide rail plate disposed within the housing; the moving nut is restricted from rotational movement by the guide rail plate; the moving nut is axially fixed to the push rod through a connecting pin.

[0008] According to an embodiment of the present invention, a connecting rod is provided at the front end of the push rod; the connecting rod is respectively provided with slotted pins hinged to the ends of the push rod and the valve core.

[0009] According to an embodiment of the present invention, the transmission mechanism further includes: a worm shaft, in transmission cooperation with the motor; a worm wheel, installed on an extension of the lead screw, the worm wheel rotates synchronously with the lead screw through a spline, and meshes with the worm shaft for transmission, so as to drive the lead screw to rotate by the rotation of the worm shaft.

[0010] According to an embodiment of the present invention, the transmission mechanism further includes: a driving gear, connected to the rotor of the motor through a spline; a driven gear, installed on the worm shaft, and rotates synchronously with the worm shaft through a key structure, so that the worm shaft obtains rotational power through the driven gear.

[0011] According to an embodiment of the present invention, the housing is installed with an adapter plate, and the adapter plate is provided with: a first bearing installation part, a second bearing installation part; the gear support shaft of the driving gear is supported by a bearing on the adapter plate and installed in the first bearing installation part; the driving end bearing of the worm shaft is installed in the second bearing installation part of the adapter plate, and the driven end bearing of the worm shaft is installed in the installation hole on the inner side of the housing.

[0012] According to an embodiment of the present invention, the housing is provided with: a second open end, and an upper cover plate is detachably and sealingly installed at the second open end; a third open end, and a side cover plate is detachably and sealingly installed at the third open end, and the side cover plate wraps the adapter plate within the housing.

[0013] The present invention also provides a manual valve drive system, including: the transmission device according to the above embodiment; a motor, installed on the adapter plate of the transmission device; an electronic control board, installed on the adapter plate, and the electronic control board has a bus communication function to control the movement of the motor; the side cover plate wraps the motor, the electronic control board and the adapter plate within the housing of the transmission device.

[0014] According to an embodiment of the present invention, it further includes an electronic control socket installed on the housing, and the electronic control socket is connected to the electronic control board through a cable to introduce external power and control signals.

[0015] The transmission device and manual valve drive system provided by the present invention achieve the digital upgrade transformation of the original manual multi-way valve, and improve the automation level and control accuracy of the equipment. Specifically, the first open end of the housing is set to be able to be hermetically docked with the valve hole end face of the valve body, ensuring that it can be directly installed at the handle seat position of the original manual multi-way valve without large-scale modification of other parts of the hydraulic system, greatly reducing the transformation cost and complexity, and improving the system compatibility at the same time. The lead screw in the transmission mechanism is rotatably arranged in the housing and is in transmission cooperation with the motor, and the moving nut is installed on the lead screw. By changing the rotation direction of the lead screw, the moving nut can reciprocate along the axial direction of the lead screw. The push-pull rod is arranged on the moving nut, and its front end is connected to the valve core of the valve body. This not only enables the position of the valve core to be accurately controlled by the motor, but also avoids the hysteresis and eddy current phenomena existing in the traditional electromagnet drive, thereby improving the control accuracy and stability. Since the entire transmission process depends on the precise control of the mechanical structure and the motor, stable performance can be maintained even under long-term operation or complex working conditions, further enhancing the reliability and automation level of the system. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of the manual valve drive system provided by the present invention.

[0018] Figure 2 It is a schematic structural diagram of the transmission mechanism of the transmission device provided by the present invention.

[0019] Figure 3 is Figure 2 The sectional structural diagram of the shown structure.

[0020] Figure 4 It is a schematic structural diagram of the housing of the transmission device provided by the present invention.

[0021] Figure 5 It is a schematic structural diagram of the motor transmission path of the manual valve drive system provided by the present invention.

[0022] Figure 6 It is a schematic structural diagram of the cooperation between the driving gear and the driven gear of the transmission device provided by the present invention.

[0023] Figure 7 It is a schematic structural diagram of the cooperation between the motor and the driving gear of the manual valve drive system provided by the present invention.

[0024] Figure 8 is Figure 7 The sectional structural schematic diagram of the structure shown

[0025] Figure 9 The structural schematic diagram of the adapter plate of the transmission device provided by the present invention

[0026] Figure 10 The schematic diagram of the usage state of the manual valve drive system provided by the present invention

[0027] Reference numerals 211, housing; 151, lead screw; 161, moving nut; 171, push rod; 152, first bearing seat; 154, second bearing seat; 163, guide rail plate; 174, connecting pin; 172, connecting rod; 173, slotted pin; 131, worm shaft; 141, worm gear; 111, driving gear; 121, driven gear; 221, adapter plate; 2211, first bearing mounting part; 2212, second bearing mounting part; 2111, first open end; 2113, second open end; 241, upper cover plate; 2112, third open end; 231, side cover plate; 31, motor; 321, electronic control board; 331, electronic control socket; 401, valve core Specific embodiments

[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the protection scope of the present invention

[0029] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the embodiments of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. It should also be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "set", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The present invention aims to provide a transmission device for precisely controlling the position of a hydraulic valve spool by driving the valve spool through a motor, so as to realize the digital upgrading and transformation of manual multi-way valves in traditional equipment such as coal mining machinery, construction machinery, and agricultural machinery. The present invention integrates three mechanical transmission methods, namely gear transmission, worm and worm gear transmission, and screw nut transmission, in a compact small device, and can be combined with a PCB stator ultra-thin motor with a bus communication control function, allowing in-situ replacement at the installation position of the handle seat of the original manual multi-way valve, thus simplifying the transformation process of the hydraulic system and reducing the upgrading cost. Since key components such as the valve body and valve spool of the original manual hydraulic valve can be reused, the transformation cost is further reduced, promoting the popularization of the digital upgrading and transformation of equipment.

[0031] The following will be combined with Figures 1 - 10 Describe the specific implementation manners of the transmission device and the manual valve drive system of the present invention.

[0032] Such as Figure 1 、 Figure 2 、 Figure 3 And Figure 5As shown in the figure, the present invention provides a transmission device, including: a housing 211, the first open end 2111 of which is set to be able to be hermetically docked with the valve hole end face of the valve body; a transmission mechanism, including: a lead screw 151, rotatably arranged in the housing 211 and used for driving cooperation with the motor 31; a moving nut 161, mounted on the lead screw 151, and capable of realizing the reciprocating movement of the moving nut 161 along the axial direction of the lead screw 151 by changing the rotation direction of the lead screw 151; a push-pull rod 171, arranged on the moving nut 161, and the front end of the push-pull rod 171 is used to connect the valve core 401 of the valve body. The first open end 2111 of the housing 211 is set to be able to be hermetically docked with the valve hole end face of the valve body, ensuring that it can be directly installed at the handle seat position of the original manual multi-way valve without large-scale modification of other parts of the hydraulic system, greatly reducing the transformation cost and complexity, and at the same time improving the system compatibility.

[0033] Specifically, the transmission device directly replaces the handle seat of the original manual multi-way valve by integrating a compact transmission mechanism, so as to realize digital control without changing the structure of the original hydraulic system. The design of the housing 211 ensures that the new device can be seamlessly docked with the existing valve body, ensuring the sealing and stability of the system. The transmission chain composed of the lead screw 151 and the moving nut 161 can accurately adjust the position of the valve core 401 under the drive of the motor 31, overcoming the problems of hysteresis and eddy current in the traditional electromagnet drive and insufficient torque in the stepper motor 31 drive, and realizing the precise control of the position of the valve core 401. This transmission device not only improves the control accuracy, but also enhances the stability and reliability of the system, and is suitable for the automation requirements under various complex working conditions.

[0034] Furthermore, the housing 211 of the above-mentioned transmission device is preferably made of brass, aluminum alloy, stainless steel and toughened engineering plastics to meet the requirements of corrosion resistance, strength and weight in different environments. The lead screw 151 is preferably made of materials such as 40Cr and 45# steel, and has good mechanical properties, such as high strength and wear resistance, and is suitable for long-term use under high pressure and frequent operation conditions. In addition, for different application scenarios, appropriate surface treatment processes can also be selected to further improve the anti-wear and anti-corrosion properties of the components, thereby extending the service life of the entire transmission device and ensuring its reliable operation under harsh working conditions.

[0035] A transmission device according to the present invention, a first bearing seat 152 and a second bearing seat 154 are arranged in a housing 211; a lead screw 151 is supported between the first bearing seat 152 and the second bearing seat 154. The lead screw 151 can rotate stably and precisely within the housing 211, thereby achieving reliable driving of a moving nut 161. Preferably, the first bearing seat 152 is a driving end bearing seat, and the housing 211 is preferably provided with a lead screw 151 driving end bearing seat mounting threaded hole for firmly mounting a motion mechanism including a lead screw 151 nut on the housing 211 structure. 2 rows of angular contact ball bearings may be arranged in the first bearing seat 152, while 1 row of angular contact ball bearings is preferably arranged in the second bearing seat 154 to improve the stability and precision of the lead screw 151 during rotation and enhance its load-bearing capacity.

[0036] Furthermore, in order to ensure accurate axial positioning of the angular contact ball bearings, the angular contact ball bearings at the driving end rely on the bearing end cover and the step in the bearing seat mounting hole for axial limit, thereby preventing possible displacement problems during operation. The first bearing seat 152 is fixed to the transmission device housing 211 through the lead screw 151 first bearing seat 152 mounting threaded hole. This method is convenient for assembly and maintenance, allowing for the replacement or repair of the lead screw 151 and its related components without disassembling the entire transmission device, and only the corresponding bearing seat needs to be removed for operation.

[0037] A transmission device according to the present invention, the transmission mechanism includes a guide rail plate 163 arranged in the housing 211; the moving nut 161 is restricted from rotational movement by the guide rail plate 163; the moving nut 161 is axially fixed to the push-pull rod 171 through a connecting pin 174. When the lead screw 151 rotates, the moving nut 161 can reciprocate smoothly along the axial direction of the lead screw 151 without rotating with the lead screw 151. The guide rail plate 163 provides an accurate guiding path within the housing 211, enabling the moving nut 161 to slide thereon, thereby effectively converting rotational motion into linear motion. In addition, under the restriction of the guide rail plate 163, the moving nut 161 can be axially fixed relative to the push-pull rod 171 through the connecting pin 174, and is convenient for disassembly, assembly and maintenance. Pulling out the connecting pin 174 can quickly separate the push-pull rod 171 and the moving nut 161.

[0038] A transmission device according to the present invention has a connecting rod 172 provided at the front end of the push-pull rod 171. The connecting rod 172 is respectively provided with slotted pins 173 hinged to the ends of the push-pull rod 171 and the valve core 401. The push-pull rod 171 can be connected to the valve core 401 in a flexible and stable manner through the connecting rod 172, ensuring the high efficiency and reliability of power transmission during movement. The slotted pins 173 are used to achieve the hinged connection between the connecting rod 172, the push-pull rod 171 and the valve core 401. This method allows the connecting rod 172 to adapt to small angular changes when driven by the push-pull rod 171, avoiding stress concentration or component damage that may be caused by rigid connection. By hinging with the slotted pins 173, it can be ensured that even when there is a slight misalignment between the push-pull rod 171 and the valve core 401, the system can still work normally, reducing the negative impact caused by manufacturing errors or inaccurate assembly.

[0039] A transmission device according to the present invention, the transmission mechanism further includes: a worm shaft 131, which is in transmission cooperation with the motor 31; a worm gear 141, installed on the extension of the lead screw 151. The worm gear 141 rotates synchronously with the lead screw 151 through a spline and meshes with the worm shaft 131 for transmission, so as to drive the lead screw 151 to rotate by driving the worm gear 141 through the rotation of the worm shaft 131. Utilizing the high efficiency and self-locking characteristics of the worm gear 141 worm drive, it is ensured that the motor 31 can control the rotational movement of the lead screw 151 smoothly and precisely. The housing 211 is preferably further provided with a worm driven end bearing mounting hole for providing the mounting position of the worm driven end bearing. The worm gear 141 is preferably made of wear-resistant materials such as bronze or special engineering plastics, and can maintain good mechanical properties during long-term operation. Through the integrated combined transmission mechanism of the worm shaft 131, the worm gear 141 and the lead screw 151, the transmission device realizes the efficient power transmission from the motor 31 to the valve core 401, and at the same time has excellent positioning accuracy and stability.

[0040] As Figure 6 , Figure 7 and Figure 8As shown, a transmission device according to the present invention, the transmission mechanism further includes: a driving gear 111, connected to the rotor of the motor 31 through a spline; a driven gear 121, installed on the worm shaft 131, and synchronously rotated with the worm shaft 131 through a key structure, so that the worm shaft 131 obtains rotational power through the driven gear 121. Through this multi-stage transmission method, not only the overall transmission efficiency of the system is improved, but also the effective control of the output torque and speed can be achieved by reasonably distributing the gear ratio. The spline connection between the driving gear 111 and the rotor of the motor 31 ensures the tight fit between the two, reducing the power loss caused by vibration or impact. At the same time, the key structure connection between the driven gear 121 and the worm shaft 131 ensures the consistency of the two during rotation, avoiding the occurrence of slip phenomenon, and improving the reliability and durability of the system. To meet the performance requirements such as high strength and wear resistance, the worm shaft 131, the driving gear 111 and the driven gear 121 can be made of alloy steel materials such as 40Cr, 45#, 20Cr, 20CrMnTi, etc. As for the worm wheel 141, materials such as tin bronze, aluminum bronze or gray cast iron are preferably selected. For some special working conditions, other high-performance materials or surface treatment technologies can also be selected to enhance the corrosion resistance and anti-wear performance of the worm wheel 141.

[0041] As Figure 5 and Figure 9 As shown, a transmission device according to the present invention, the housing 211 is installed with an adapter plate 221, and the adapter plate 221 is provided with: a first bearing installation part 2211, a second bearing installation part 2212; the gear support shaft of the driving gear 111 is supported by a bearing on the adapter plate 221 and installed in the first bearing installation part 2211; the driving end bearing of the worm shaft 131 is installed in the second bearing installation part 2212 of the adapter plate 221, and the driven end bearing of the worm shaft 131 is installed in the installation hole inside the housing 211. The gear support shaft of the driving gear 111 is accurately installed on the first bearing installation part 2211 of the adapter plate 221 through a bearing, which not only ensures that the driving gear 111 can receive the power from the motor 31 smoothly and efficiently, but also reduces the energy loss and noise generation caused by imbalance or vibration. The driving end of the worm shaft 131 is installed in the second bearing installation part 2212 of the adapter plate 221 through a bearing, and its driven end is fixed in the installation hole specially set inside the housing 211, ensuring the stability and centering of the worm shaft 131 in the entire length direction, and avoiding the additional wear and failure risks caused by deviation or misalignment.

[0042] Furthermore, in order to enhance the functionality and integration of the entire device, the adapter plate 221 is preferably further provided with a motor 31 mounting threaded hole and an electronic control board 321 mounting threaded hole. In this way, the adapter plate 221 can not only provide a support carrier for the driving gear 111 shaft and the driven gear 121 shaft (i.e., the worm shaft 131), but also facilitate the installation of the motor 31 and its control system, forming a compact and fully functional transmission unit. By firmly connecting the adapter plate 221 to the housing 211 using bolts, it is possible to ensure the close fit between all components, reduce the possibility of loosening and displacement, and thus guarantee a long-term stable working state.

[0043] As Figure 4 shown, in a transmission device according to the present invention, the housing 211 is provided with: a second open end 2113, and an upper cover plate 241 is detachably and sealingly mounted on the second open end 2113; a third open end 2112, and a side cover plate 231 is detachably and sealingly mounted on the third open end 2112, and the side cover plate 231 encloses the adapter plate 221 within the housing 211. Through the sealing installation of the upper cover plate 241 on the second open end 2113, it is possible to effectively prevent external dust, moisture or other contaminants from entering the interior of the housing 211, thereby protecting the core components of the transmission mechanism from contamination or corrosion. At the same time, by providing a sealing ring groove and cooperating with a sealing ring at the second open end 2113, the sealing performance of the housing 211 is further improved, ensuring that it can operate stably for a long time in a harsh environment. In addition, by removing the upper cover plate 241, it is possible to directly access the connection part of the push rod 171 and the connecting rod 172, thus facilitating mechanical connection or disconnection operations. Through the sealing installation of the side cover plate 231 on the third open end 2112, the adapter plate 221 and its related components (such as the driving gear 111 shaft, the worm shaft 131, etc.) are completely enclosed within the housing 211. Similarly, by providing a sealing ring groove and cooperating with a sealing ring at the third open end 2112, it is possible to ensure the tight connection between the side cover plate 231 and the housing 211, avoiding the risk of leakage or failure caused by external environmental factors. In addition, the detachable design of the side cover plate 231 allows technicians to quickly open the housing 211 to inspect, repair or replace the adapter plate 221 and the transmission components it supports, thereby significantly shortening the maintenance time and reducing the maintenance cost.

[0044] The present invention also provides a manual valve drive system. The manual valve drive system provided by the present invention will be described below, and the manual valve drive system described below can be mutually corresponding and referred to the transmission device described above. The manual valve drive system includes: a transmission device as described in the above embodiment; a motor 31, mounted on the adapter plate 221 of the transmission device; an electronic control board 321, mounted on the adapter plate 221, and the electronic control board 321 has a bus communication function to control the movement of the motor 31; the side cover plate 231 encloses the motor 31, the electronic control board 321 and the adapter plate 221 within the housing 211 of the transmission device.

[0045] Among them, the motor 31 can be fixed through the motor 31 mounting threaded hole on the adapter plate 221 to ensure its stability and precise position alignment. The motor 31 is preferably a PCB type ultra-thin type, which not only saves space but also can adapt to a small working environment. The maximum speed of this motor 31 can reach 1500rpm to 10000rpm, providing a wide speed adjustment range for the system to meet different application requirements. The electric control board 321 is fixed through the electric control board 321 mounting threaded hole on the adapter plate 221 to ensure that the electrical connection between it and the motor 31 is stable and reliable, and at the same time facilitates debugging and maintenance work.

[0046] When working, the electric control board 321 receives external control instructions and accurately controls the rotation direction and speed of the motor 31 according to these instructions. After the motor 31 is started, its power is transmitted to the driving gear 111 through the spline, so that the driving gear 111 starts to rotate. Subsequently, the power of the driving gear 111 is transmitted to the worm shaft 131 via the driven gear 121, and the rotation of the worm shaft 131 further drives the worm wheel 141 to rotate. Since the worm wheel 141 rotates synchronously with the screw rod 151 through the spline, the rotation of the worm wheel 141 directly causes the screw rod 151 to rotate. As the screw rod 151 rotates, the motion nut 161 mounted thereon moves linearly. The motion nut 161 is connected to the push-pull rod 171 through the connecting pin 174, and the push-pull rod 171 moves linearly accordingly. Finally, the push-pull rod 171 drives the valve core 401 to move linearly in the valve hole through the connecting rod 172, thereby realizing precise control of the flow channel.

[0047] The motor 31 rotates at different angles to correspond to different stop positions of the valve core 401, thereby achieving accurate positioning of the valve core 401 in the valve hole. Through the bus communication function, the electric control board 321 can receive and send control information in real time, so that the entire manual valve drive system can maintain efficient and stable operation under complex working conditions. In addition, the modular design concept also greatly simplifies the maintenance process of the equipment, reduces the cost of use, and improves the reliability and durability of the overall system.

[0048] Furthermore, a manual valve drive system according to the present invention further includes an electric control socket 331 installed on the housing 211, and the electric control socket 331 is connected to the electric control board 321 through a cable to introduce an external power supply and a control signal. The manual valve drive system can be conveniently connected to an external control system through the electric control socket 331 to ensure stable transmission of power supply and control instructions. The design of the electric control socket 331 takes into account the convenience and reliability in practical applications, and a 4-core or 6-core type can usually be selected to meet the power supply and signal transmission requirements in different application scenarios.

[0049] The above-mentioned electrically controlled socket 331 not only provides the necessary power input for the device, but also preferably supports communication connections with other system components. For example, in situations where complex control logic needs to be implemented or multiple devices need to work together, the electrically controlled socket 331 can quickly access the bus network through a standard interface to achieve data exchange and remote control. The 4-core or 6-core design can be selected according to specific requirements for a suitable connection method. For example, two cores are used for power supply, and the remaining cores are used for signal transmission, or more cores can be allocated according to needs for redundant design or additional functions.

[0050] As Figure 10 shown, through the manual valve drive system, multiple transmission devices can be connected in series through inter-chip connection cables for group use. Specifically, it plays the advantage of bus cluster control on one or more groups of multi-way manual hydraulic valves, so that the manually controlled mechanical equipment can be upgraded to digital control. Each manual valve drive system can receive instructions from the central controller through its electrically controlled socket 331 and perform corresponding actions, which greatly improves the integration and intelligence level of the system. For large-scale mechanical equipment or complex production lines, this method can not only significantly improve the degree of automation, but also optimize the operation process and improve the overall operation efficiency.

[0051] In addition, connecting multiple transmission devices in series to form a cluster control system can also utilize the advantages of bus technology to achieve functions such as status monitoring, fault diagnosis, and parameter adjustment of all connected devices. It has a significant effect on improving the automation level and operation efficiency of mechanical equipment.

[0052] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or mode are included in at least one embodiment or mode of the embodiments of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or modes. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or modes described in this specification and the features of different embodiments or modes.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transmission device, characterized in that: include: A housing (211), wherein a first opening end (2111) is configured to be sealably docked with an end face of a valve hole of a valve body; Transmission mechanism, including: A screw rod (151) is rotatably disposed in the housing (211) and is used for transmission cooperation with the motor (31); A motion nut (161) is mounted on the screw rod (151), and by changing the rotation direction of the screw rod (151), the motion nut (161) can be made to reciprocate along the axial direction of the screw rod (151); A push-pull rod (171) is arranged on the moving nut (161), and a front end of the push-pull rod (171) is used to connect to the valve core (401) of the valve body.

2. The transmission device according to claim 1, characterized in that: A first bearing seat (152) and a second bearing seat (154) are arranged in the housing (211); The screw rod (151) is supported between the first bearing seat (152) and the second bearing seat (154).

3. The transmission device according to claim 1, characterized in that: The transmission mechanism comprises a guide rail plate (163) arranged in the housing (211); The moving nut (161) limits rotational movement through the guide rail plate (163); The moving nut (161) is axially fixed with the push-pull rod (171) via a connecting pin (174).

4. The transmission device according to claim 1, characterized in that: A connecting rod (172) is provided at the front end of the push-pull rod (171); The connecting rod (172) is provided with a slotted pin (173) hinged to the end of the push-pull rod (171) and the valve core (401).

5. The transmission device according to any one of claims 1 to 4, characterized in that: The transmission mechanism also includes: A worm shaft (131) is in driving cooperation with the motor (31); A worm wheel (141) is mounted on an extension of the screw rod (151); the worm wheel (141) rotates synchronously with the screw rod (151) via a spline and meshes with the worm shaft (131) for transmission, so that the worm wheel (141) drives the screw rod (151) to rotate by the rotation of the worm shaft (131).

6. The transmission device according to claim 5, characterized in that: The transmission mechanism also includes: A driving gear (111) connected to the rotor of the motor (31) via a spline; A driven gear (121) is mounted on the worm shaft (131) and rotates synchronously with the worm shaft (131) via a key structure, so that the worm shaft (131) obtains rotational power through the driven gear (121).

7. The transmission device according to claim 6, characterized in that: The housing (211) is installed with an adapter plate (221), and the adapter plate (221) is provided with: A first bearing mounting portion (2211) and a second bearing mounting portion (2212); The gear support shaft of the driving gear (111) is supported on the adapter plate (221) via a bearing and is mounted on the first bearing mounting portion (2211); The driving end bearing of the worm shaft (131) is mounted on the second bearing mounting portion (2212) of the adapter plate (221), and the driven end bearing of the worm shaft (131) is mounted on the mounting hole inside the housing (211).

8. The transmission device according to claim 7, characterized in that: The housing (211) is provided with: A second opening end (2113), the second opening end (2113) being detachably and hermetically mounted with an upper cover plate (241); A third opening end (2112), the third opening end (2112) being detachably and hermetically mounted with a side cover plate (231), the side cover plate (231) enclosing the adapter plate (221) within the housing (211).

9. A manual valve drive system, characterized in that: include: The transmission device as claimed in claim 8; A motor (31) mounted on an adapter plate (221) of the transmission device; An electric control board (321) is mounted on the adapter board (221), and the electric control board (321) has a bus communication function to control the movement of the motor (31); The side cover plate (231) covers the motor (31), the electric control board (321) and the adapter plate (221) in the housing (211) of the transmission device.

10. The manual valve driving system according to claim 9, characterized in that: It also includes an electric control socket (331) mounted on the housing (211), wherein the electric control socket (331) is connected to the electric control board (321) via a cable to introduce an external power supply and a control signal.

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