Transmission system based on gear and gear shaft

Abstract

A transmission system based on a gear and a gear shaft belongs to the technical field of transmission devices and comprises a gear box, a PLC (programmable logic controller), a connecting box, a transmission unit, a rotating speed monitoring component and a brake device, and the PLC is mounted on the gear box; the connecting box is detachably assembled below the gear box; the transmission unit is arranged at the gear box and comprises a first transmission shaft, and the first transmission shaft is rotationally arranged in the middle of an inner cavity of the gear box in the vertical direction. By means of the cooperative working sensor, the rotating speed interval of the gear shaft can be accurately monitored in real time, and rotating speed abnormity can be quickly captured; by presetting the rotating speed threshold value and calculating the change rate, once the rotating speed exceeds the threshold value, the braking device can be rapidly controlled, the gear shaft is effectively prevented from being locked, the whole transmission system is prevented from being stopped due to locking, the equipment operation stability and reliability are greatly improved, the equipment maintenance cost and the production interruption risk are reduced, and efficient and continuous production is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of transmission devices, and particularly relates to a transmission system based on gears and gear shafts. Background Art

[0002] Gears and gear shafts are key components in the field of mechanical transmission. The gear shaft drives the gear to rotate. Through the meshing of the gear teeth, the transmission and transformation of torque and rotational speed are achieved. According to different designs and application scenarios, the transmission ratio can be changed to accurately control the power output. It is widely used in many mechanical devices such as automobiles and machine tools to ensure their efficient and stable operation.

[0003] In the related art, a Chinese utility model patent (publication number CN210265771U) discloses a gear, a gear shaft, and a gear transmission device containing such a gear and a gear shaft. The assembly between the gear and the gear shaft is completed by setting a depression inside the gear and a protrusion inside the gear shaft that fits the depression of the gear. This method has low requirements for the machining accuracy of the gear and the gear shaft. As long as the protrusion can be inserted into the depression, the success rate of the assembly can be ensured; after assembly, the first flange of the gear shaft will fit with the first through hole of the gear, the second flange will mesh with the connecting block, and the nut will fit with the thread on the second shaft body, which greatly increases the stability of the gear transmission device, making the gear transmission device more stable during operation and not prone to vibration, noise, and mechanical failures.

[0004] In the existing gear and gear shaft transmission system, when the gear shaft encounters unexpected situations, such as a sudden increase in load, it is difficult for the operator to detect the abnormal change in the rotational speed of the gear shaft in a timely manner, let alone know whether it is on the verge of locking. Once the gear shaft locks, the entire transmission system will come to a standstill instantly, which will cause serious damage to the equipment in operation. For example, in an automated production line, the material transmission relies on the gear shaft to drive the conveyor belt to rotate. If the gear shaft locks, a large amount of materials will accumulate, not only will the production line be forced to stop, but also the equipment components will be deformed and broken due to overload, resulting in high maintenance costs and long time consumption. Summary of the Invention

[0005] In the gear and gear shaft transmission system of the prior art, when the gear shaft encounters unexpected situations, such as a sudden surge in load, it is difficult for the operator to detect the abnormal change in the rotational speed of the gear shaft in a timely manner, let alone know whether it is on the verge of locking. Once the gear shaft locks, the entire transmission system will come to a standstill instantly, resulting in the shutdown of the equipment and even deformation and damage. The present invention provides a transmission system based on a gear and a gear shaft. By presetting a rotational speed threshold and calculating the change rate, once the rotational speed exceeds the threshold, the braking device can be quickly controlled, effectively preventing the gear shaft from locking, avoiding the stagnation of the entire transmission system due to locking, greatly improving the operation stability and reliability of the equipment, reducing the equipment maintenance cost and the risk of production interruption, and ensuring efficient and continuous production. The specific technical solution is as follows:

[0006] A transmission system based on a gear and a gear shaft, including a gearbox, and further including: a PLC controller, a connection box, a transmission unit, a rotational speed monitoring component, and a braking device. The PLC controller is installed on the gearbox; the connection box is detachably assembled below the gearbox; the transmission unit is arranged at the gearbox, the transmission unit includes a first transmission shaft, and the first transmission shaft is rotatably arranged in the middle of the inner cavity of the gearbox in the vertical direction; the rotational speed monitoring component is arranged in the inner cavity of the gearbox, the rotational speed monitoring component includes a transmitter and a receiver, the transmitter is fixedly installed on the first transmission shaft, the receiver is installed on the left side wall of the inner cavity of the gearbox, and the transmitter and the receiver are located on the same horizontal line, and the transmitter and the receiver are electrically connected to the PLC controller respectively; the braking device is arranged at the connection box, the braking device includes a first rotating shaft, the bottom end of the first rotating shaft is rotatably connected to the bottom end of the inner wall of the connection box, a brake disc is fixedly installed on the first rotating shaft, a positioning seat is fixedly installed at the top end of the first rotating shaft, the positioning seat is arranged in a cylindrical structure with an open top, a second rotating shaft is detachably connected to the inner cavity of the positioning seat, the second rotating shaft is coaxial and fixedly connected with the first transmission shaft, two brake blocks are symmetrically arranged on the left and right sides of the brake disc, and the two brake blocks can move symmetrically in the horizontal direction towards or away from each other. When the two brake blocks move towards each other and fit against the side wall of the brake disc, the braking of the brake disc is realized;

[0007] Among them, the first transmission shaft, the second rotating shaft, the positioning seat, the brake disc, and the first rotating shaft are all coaxially arranged.

[0008] In the above technical solution, the braking device further includes a driving assembly, and the driving assembly includes: a cylinder, a moving seat, a first driving rod, and a rack. The cylinder is installed on the front side wall of the connection box, the output end of the cylinder extends into the inner cavity of the connection box, and the cylinder is electrically connected to the PLC controller; the moving seat is fixedly installed on the rear output end of the cylinder; there are two first driving rods, and the two first driving rods are symmetrically inclined left and right with respect to the moving seat, and the two first driving rods are respectively rotatably connected to the moving seat; there are two racks, and the two racks are symmetrically arranged left and right with respect to the moving seat and are horizontally movable, and the racks are rotatably connected to one end of the first driving rod away from the moving seat.

[0009] In the above technical solution, the two racks are horizontally moved through a first guiding assembly. The first guiding assembly includes: a first slider and a first guiding rod. There are two first sliders, and the two first sliders are respectively fixedly installed on the front side walls of the two racks; the first guiding rod is installed horizontally in the inner cavity of the connection box, and the two first sliders are slidably sleeved on the first guiding rod.

[0010] In the above technical solution, the braking device further includes a rotating assembly. There are two groups of rotating assemblies, and the two groups of rotating assemblies are symmetrically arranged left and right with the moving seat as the axis. Each group of rotating assemblies includes: a rotating rod, a sector gear, a turntable, a driving pin, a moving frame, and a first connecting seat. The rotating rod is rotatably connected in the connection box in the vertical direction; the sector gear is fixedly installed on the rotating rod, and the sector gear is meshed with the side wall of the rack; the turntable is fixedly installed on the top of the rotating rod; the driving pin is fixedly installed on the upper surface of the turntable, and the driving pin is eccentrically arranged with respect to the center of the turntable; the moving frame is provided with a through cavity for the driving pin to slide from top to bottom, the moving frame is slidably sleeved on the driving pin, and the moving frame can perform reciprocating horizontal movement; the first connecting seat is installed on the side wall of the moving frame close to the first rotating shaft, and the first connecting seat is L-shaped, and the top end of the first connecting seat is fixedly connected to the brake block;

[0011] Among them, the rotating rod, the center of the sector gear, and the turntable are all coaxially arranged.

[0012] In the above technical solution, the length of the through cavity opened in the moving frame is greater than the diameter length of the turntable.

[0013] In the above technical solution, the moving frame moves horizontally through the second guiding component. The second guiding component includes: a second connecting seat, a second sliding block, and a second guiding rod. The second connecting seat is fixedly installed on the rear side wall of the moving frame; the second sliding block is fixedly installed on the rear side wall of the second connecting seat; the second guiding rod is fixedly installed horizontally in the inner cavity of the connecting box, and the second sliding block is slidably sleeved on the second guiding rod.

[0014] In the above technical solution, the inner cavity of the positioning seat is detachably connected with a second rotating shaft through a centering positioning unit. The centering positioning unit includes: a slot, a plug, a connecting piece, a third sliding block, and a third guiding rod. There are two slots, and the two slots are symmetrically arranged on the side wall of the second rotating shaft in the left-right direction; there are two plugs, and the positions of the two plugs correspond to the positions of the two slots respectively. The two plugs move symmetrically in the horizontal direction towards or away from each other relative to the second rotating shaft. When the plug is embedded in the inner cavity of the slot, coaxial connection of the second rotating shaft at the positioning seat is achieved; the connecting piece is installed on the side of the plug away from the slot; the third sliding block is fixedly installed on the side of the connecting piece away from the plug, and the third sliding block is installed on the lower surface of the connecting piece; the third guiding rod is vertically installed on the outer side wall of the positioning seat, and the third sliding block is slidably sleeved on the third guiding rod.

[0015] In the above technical solution, the centering positioning unit further includes: a second driving rod, a fourth guiding rod, a fourth sliding block, a lifting frame, and a screw rod. There are two second driving rods, and one end of each second driving rod is rotatably connected to the connecting piece; there are two fourth guiding rods, and the two fourth guiding rods are vertically installed on the upper surface of the positioning seat in the vertical direction; the fourth sliding block is slidably sleeved on the fourth guiding rod, and the other end of the second driving rod is rotatably connected to the fourth sliding block; the lifting frame is fixedly installed on the rear side wall of the fourth sliding block, and the lifting frame is U-shaped; the screw rod is rotatably and vertically installed on the upper surface of the positioning seat, and the lifting frame is threadedly sleeved on the screw rod.

[0016] In the above technical solution, a maintenance component is arranged on the rear side wall of the connecting box. The maintenance component includes: a window and a baffle. The window is opened on the rear side wall of the connecting box, and the window is arranged corresponding to the position of the centering positioning unit; the baffle is pluggably inserted into the inner cavity of the window.

[0017] In the above technical solution, the transmission unit further includes: a motor, a driving gear, a second transmission shaft, and a driven gear. The motor is installed on the upper surface of the gearbox, and the output end of the motor extends into the inner cavity of the gearbox and is connected to the top end of the first transmission shaft. The motor is electrically connected to the PLC controller; the driving gear is fixedly installed on the first transmission shaft and is coaxially arranged with the first transmission shaft; the bottom end of the second transmission shaft is vertically and rotatably arranged at the bottom end of the inner cavity of the gearbox, and the top end of the second transmission shaft extends upward out of the upper surface of the gearbox; the driven gear is fixedly installed on the second transmission shaft and is coaxially arranged with the second transmission shaft, and the driven gear is meshed and connected with the driving gear.

[0018] A transmission system based on gears and gear shafts according to the present invention has the following beneficial effects compared with the prior art:

[0019] First, in the existing gear and gear shaft transmission system, when the gear shaft encounters sudden situations, such as a sudden increase in load, it is difficult for the operator to detect the abnormal change in the rotational speed of the gear shaft in time, let alone know whether it is on the verge of locking. Once the gear shaft locks, the entire transmission system will stop instantly, resulting in the shutdown of the equipment and even deformation and damage. With the cooperation of the transmitter and the receiver, the present invention can monitor the rotational speed range of the first transmission shaft in real time and accurately sense the rotational speed of the first transmission shaft. Since the transmission ratio between the driving gear and the driven gear is fixed, by controlling the first transmission shaft to maintain a stable rotational range, it can ensure that the second transmission shaft rotates stably and will not be locked due to a sudden increase in load. When the first transmission shaft encounters sudden situations such as a sudden increase in load, it can timely capture the abnormal change in rotational speed. By presetting the rotational speed threshold through the PLC controller and calculating the rotational speed change rate, once the rotational speed exceeds the threshold, the braking device is quickly controlled to brake the first transmission shaft, effectively preventing the occurrence of the locking phenomenon of the first transmission shaft. Since the driving gear is meshed with the second transmission shaft, preventing the locking of the first transmission shaft can prevent the locking of the second transmission shaft, thereby avoiding the instant stop of the entire transmission system due to locking, eliminating the deformation and damage caused by the sudden shutdown of the equipment, improving the stability and reliability of the equipment operation, reducing the frequency and cost of equipment maintenance, reducing the risk of production interruption caused by equipment failures, and ensuring the continuous and efficient operation of production;

[0020] Second, the present invention is provided with a first rotating shaft coaxial with the first transmission shaft, and through the cooperation of the first rotating shaft, the brake disc and the two brake blocks, the brake blocks are close to and fit against the side wall of the brake disc to realize the frictional braking of the brake disc, avoiding the over-speed rotation of the brake disc, that is, avoiding the over-speed rotation of the first transmission shaft. When the first transmission shaft encounters sudden situations such as a sudden increase in load, the first transmission shaft is braked, effectively preventing the occurrence of the locking phenomenon of the first transmission shaft;

[0021] III. When the gear shaft shows a tendency to lock up, direct braking will cause the system speed to drop significantly instantaneously, triggering a chain reaction of other components and damaging the stability of the entire system. To address this problem, when the present invention detects a tendency for the gear shaft to lock up, such as when the speed drops sharply or may even stop rotating immediately due to sudden load increase, lubrication failure, etc., it does not directly cause the first transmission shaft to stop rotating completely. Instead, it intermittently approaches and fits the side wall of the brake disc through the brake block to achieve intermittent braking of the first transmission shaft, preventing the first transmission shaft from suddenly locking up due to too rapid a speed drop, and avoiding the situation where the sudden locking up of the first transmission shaft causes a great impact on the entire transmission system and damages components such as gears, shafts, and bearings. By means of intermittent braking, the first transmission shaft can fluctuate within a relatively safe speed range, avoiding complete locking up, and at the same time allowing the system to have time for adjustment and response; that is, the present invention can make the speed of the first transmission shaft fluctuate within a relatively safe range through intermittent braking, providing a buffer time for system adjustment, ensuring the continuity of power transmission, and preventing equipment vibration and jamming caused by sudden speed changes; for example, in the transmission system of an automated production line, intermittent braking can ensure the smooth operation of the production line and avoid stagnation or misalignment during product conveyance;

[0022] IV. When the gear shaft shows a tendency to lock up, if direct braking is used, the strong braking force is likely to cause cracks and increased wear on the tooth surface of the gear, and even cause deformation of the gear shaft. To address this problem, the intermittent braking of the present invention can avoid impact damage to the gear, gear shaft, and related components due to the instantaneous application of excessive braking force. In addition, the intermittent braking can disperse the impact force through short-time and multiple braking operations, effectively extending the service life of the equipment; for example, in the transmission system of a machine tool, intermittent braking can ensure the long-term stable operation of precision gears and maintain machining accuracy;

[0023] V. By intermittently braking and adjusting the first transmission shaft, the present invention can achieve deceleration and torque control of the first transmission shaft to adapt to the processing conditions that require deceleration or torque control of the first transmission shaft. For example, when the transmission system needs to smoothly transition from a high-speed operating state to a low-speed operating state, or needs to stop accurately at a specific position, the braking device can achieve the above functions by applying braking force. At this time, the braking device can assist in controlling the speed and torque without causing the first transmission shaft to suddenly lock up;

[0024] VI. The present invention is provided with two symmetric brake blocks on both side walls of the brake disc. Through the two brake blocks, frictional braking can be synchronously performed on the left and right side walls of the brake disc, which has a better braking effect on the brake disc compared to a single brake block. Specifically, when a single brake block brakes, the brake disc is prone to generating an eccentric moment due to unilateral force. This not only reduces the braking efficiency but may also cause axial displacement or uneven wear of the brake disc in the long term. However, symmetric braking with two brake blocks can effectively offset this eccentric moment, and synchronous braking on both sides makes the friction force distribution on the brake disc during braking more uniform, and the braking process is more stable and efficient;

[0025] VII. In the present invention, to ensure that the left and right groups of brake blocks can move symmetrically to achieve the effect of symmetric braking on the left and right side walls of the brake disc, a single driving force of a cylinder is set, and symmetric connecting components are arranged at the output end of the cylinder, ultimately realizing the symmetric movement of the left and right groups of brake blocks; symmetric connecting components are arranged at the output end of the cylinder. With its highly symmetric structure, the driving force generated by the cylinder is accurately and evenly distributed to the brake blocks on both sides. Thus, under the action of the cylinder driving force, the left and right groups of brake blocks can achieve highly consistent symmetric movement. Compared with the scheme of using multiple independent driving forces acting on the brake blocks on both sides respectively, the single driving force avoids the problem of asynchronous movement caused by the response time difference of multiple power sources, ensuring that the brake disc will not twist or shift due to uneven force on both sides during braking;

[0026] VIII. In the present invention, through the intermittent contact between the two groups of brake blocks and the side wall of the brake disc, the frictional force generated each time of contact decelerates the brake disc and the first transmission shaft in a short time, and then can be separated briefly, enabling the components to dissipate heat and relieve stress, effectively extending the service life of related components such as the brake blocks and the brake disc, and at the same time ensuring the durability and stability of the braking effect;

[0027] IX. In the present invention, through the reciprocating movement of the rack in the horizontal direction, the left and right groups of sector gears and turntables can be driven to perform circumferential reciprocating swings, and further the moving frame and the brake blocks can perform reciprocating movements in the horizontal direction. Through the brake blocks that reciprocate in the horizontal direction, intermittent contact with the side wall of the brake disc is achieved, that is, intermittent braking of the brake disc and the first transmission shaft is realized;

[0028] X. In addition, the present invention adopts an intermittent braking method for the first transmission shaft, endowing the system with stronger flexibility. When the first transmission shaft faces different working conditions, by adjusting the displacement frequency of the output end of the cylinder, the contact frequency between the brake block and the side wall of the brake disc is adjusted. For example, when the system detects slight fluctuations or short-term overloads in the load of the first transmission shaft, it can automatically adjust the displacement frequency of the output end of the cylinder according to the actual situation to adjust the braking frequency of the brake block on the side wall of the brake disc. When the load changes slightly, the contact frequency between the brake block and the side wall of the brake disc decreases; while when the load increases instantaneously, the contact frequency will increase accordingly, so as to accurately adapt to various complex working conditions and ensure the stable operation of the entire transmission system;

[0029] XI. In the present invention, the centers of the first transmission shaft and the second rotating shaft are on the same vertical axis, and the centers of the second rotating shaft and the first rotating shaft are also on the same vertical axis. Thus, it can be ensured that the first transmission shaft, the second rotating shaft, the first rotating shaft, and the brake disc rotate coaxially, and there will be no eccentricity in the rotation between the above components;

[0030] XII. In the present invention, the connection and assembly between the second rotating shaft and the first rotating shaft can be quickly corresponded, and after assembly, it can be ensured that the second rotating shaft and the first rotating shaft are automatically coaxially arranged to ensure the subsequent coaxial rotation of the first transmission shaft, the second rotating shaft, the first rotating shaft, and the brake disc;

[0031] XIV. By driving the screw rod to rotate, the present invention can prompt the two plug blocks to be inserted into the inner cavities of two slots at corresponding positions at the same time, that is, to realize the quick coaxial assembly connection between the second rotating shaft and the first rotating shaft. The assembly between the second rotating shaft and the first rotating shaft is rapid and accurate, ensuring the high precision of the coaxial assembly of the second rotating shaft and the first rotating shaft, reducing the equipment operation failures caused by assembly errors, and improving the overall stability and reliability of the equipment;

[0032] XV. In actual industrial production, the specifications of the transmission system are rich and diverse, and the diameter of the first transmission shaft often varies due to different application scenarios and design requirements. In the present invention, by precisely adjusting the displacement distance of the plug block, the plug block can be flexibly and accurately inserted into the slots opened on the second rotating shafts with different thicknesses, enabling the present invention to achieve the coaxial locking connection between the second rotating shafts with different thickness diameters and the first rotating shaft; that is, the present invention breaks through the limitation that the traditional braking device can only adapt to a single specification of gear shaft. By regulating the displacement distance of the plug block, it seamlessly docks with the first transmission shafts with different diameters to meet the braking requirements of various transmission systems, which means that during the equipment selection and upgrade process of enterprises, there is no need to replace the entire braking device due to the change in the diameter of the first transmission shaft in the transmission system. Only by making corresponding adjustments to the displacement of the plug block in the present invention can quick adaptation be achieved, greatly saving equipment costs;

[0033] 16. In the present invention, by moving the screw in the vertical direction, the two sets of insertion blocks can move towards or away from each other in the horizontal direction. Moreover, the two sets of insertion blocks are symmetrically arranged left and right with respect to the center of the positioning seat. Thus, it is ensured that the second rotating shafts after the two sets of insertion blocks are positioned can be centered and docked at the positioning seat, so as to ensure that the second rotating shafts of different specifications and sizes are always coaxial with the first rotating shaft after positioning, without the need for subsequent redundant centering adjustment steps;

[0034] 17. In the present invention, the gearbox and the connection box adopt a split structure, that is, the connection box has the ability to be independently assembled at different positions of the gearbox. Through the precise docking and assembly process between the first rotating shaft, the positioning seat, the second rotating shaft and the first transmission shaft, the anti-lock operation can be performed on the first transmission shaft of the gearbox part; specifically, the present invention can flexibly choose whether to assemble the connection box and its internal components according to whether the gearbox needs the anti-lock function. For the gearbox and the first transmission shaft that were not originally equipped with the anti-lock function, the anti-lock function can also be conveniently added by temporarily assembling the connection box, thereby effectively improving the safety and stability of the system and meeting the diverse actual application requirements;

[0035] In summary, in terms of monitoring and anti-lock, the present invention can accurately monitor the rotational speed range of the gear shaft in real time with the help of sensors working in cooperation, and quickly capture abnormal rotational speeds; by presetting the rotational speed threshold and calculating the change rate, once the rotational speed exceeds the threshold, the braking device can be quickly controlled to effectively prevent the gear shaft from locking, avoiding the stagnation of the entire transmission system due to locking, greatly improving the operation stability and reliability of the equipment, reducing the equipment maintenance cost and the risk of production interruption, and ensuring efficient and continuous production; the braking method adopts intermittent braking. When the gear shaft has a tendency to lock, it avoids the sudden drop in rotational speed and the chain reaction and impact damage of components caused by direct braking; the intermittent braking makes the rotational speed of the gear shaft fluctuate within a safe range, provides a buffer for system adjustment, ensures the continuity of power transmission, prevents equipment vibration and jamming, and can also achieve speed reduction and torque control, adapting to diverse processing conditions and extending the service life of the equipment; the components can be coaxially assembled quickly and with high precision, ensuring that the relevant components rotate coaxially and avoiding eccentricity; by adjusting the displacement of specific components, different diameter gear shafts can be flexibly adapted, breaking through the specification limitations of traditional braking devices and saving the enterprise's equipment selection and upgrade costs; in addition, the split structure allows the anti-lock function components to be flexibly assembled as needed, enhancing the safety and stability of the system and meeting the requirements of diverse application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic structural diagram of the gearbox of the present invention;

[0037] Figure 2 is a rear view structural diagram of the maintenance component of the present invention;

[0038] Figure 3Schematic diagram of the partial cross-section structure of the connection box of the present invention;

[0039] Figure 4 Schematic diagram of the main cross-section structure of the gearbox of the present invention;

[0040] Figure 5 Schematic diagram of the partial cross-section structure of the gearbox of the present invention;

[0041] Figure 6 Schematic diagram of the structure of the brake disc of the present invention;

[0042] Figure 7 Schematic diagram of the structure of the sector gear of the present invention;

[0043] Figure 8 Schematic diagram of the structure of the driving gear of the present invention;

[0044] Figure 9 is Figure 8 enlarged view of part A;

[0045] Figure 10 Schematic diagram of the structure of the present invention when the second rotating shaft is disengaged from the positioning seat;

[0046] Figure 11 Schematic diagram of the structure of the second driving rod of the present invention;

[0047] Figures 1 to 11 In, 1, gearbox, 2, connection box, 3, transmission unit, 3001, motor, 3002, first transmission shaft, 3003, driving gear, 3004, second transmission shaft, 3005, driven gear, 4, rotational speed monitoring component, 4001, transmitter, 4002, receiver, 5, braking device, 5001, first rotating shaft, 5002, brake disc, 5003, positioning seat, 5004, second rotating shaft, 5005, brake block, 5006, cylinder, 5007, moving seat, 5008, first driving rod, 5009, rack, 5010, first slider, 5011, first guide rod, 5012, rotating rod, 5013, sector gear, 5014, turntable, 5015, driving pin, 5016, moving frame, 5017, first connecting seat, 5018, second connecting seat, 5019, second slider, 5020, second guide rod, 6, centering positioning unit, 6001, slot, 6002, insert block, 6003, connecting piece, 6004, third slider, 6005, third guide rod, 6006, second driving rod, 6007, fourth guide rod, 6008, fourth slider, 6009, lifting frame, 6010, screw rod, 7, maintenance component, 7001, window, 7002, baffle, 8, PLC controller. Detailed implementation manner

[0048] In order to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and illustration only, and are not intended to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, numerous details are provided to give a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be shown in a simplified manner to simplify the drawings.

[0049] In the description of the embodiments of the present disclosure, the terms "first", "second", etc. in the specification, claims and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so as to implement the embodiments of the present disclosure described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0050] In the embodiments of the present disclosure, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and their implementations, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. And, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0051] In addition, the terms "arranged", "connected", "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0052] Unless otherwise specified, the term "plurality" means two or more.

[0053] In the embodiments of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0054] The term "and / or" describes the associated relationship of the objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B these three relationships.

[0055] The following further describes the present invention in conjunction with specific implementation cases and the attached Figures 1 to 11 drawings, but the present invention is not limited to these embodiments.

[0056] Mainly referring to Figures 1 to 8 as shown, a transmission system based on a gear and a gear shaft includes a gearbox 1, and further includes: a PLC controller 8, a connection box 2, a transmission unit 3, a rotational speed monitoring component 4, and a braking device 5. The PLC controller 8 is installed on the gearbox 1, and the PLC controller 8 is used to control the components electrically connected thereto to process corresponding instructions; the connection box 2 is detachably assembled below the gearbox 1. In this application, the two are connected and assembled by screws, forming a box shape with a cuboid appearance, which can protect the components installed in their inner cavities and prevent dust. The gearbox 1 and the connection box 2 adopt a split structure, that is, the connection box 2 has the ability to be independently assembled at different positions of the gearbox 1. Specifically, the present invention can flexibly choose whether to assemble the connection box 2 and its internal components according to whether the gearbox 1 requires an anti-lock function. For a gearbox 1 that originally does not have an anti-lock function, the anti-lock function can also be conveniently added by temporarily assembling the connection box 2, thereby effectively improving the safety and stability of the system and meeting diverse actual application requirements; the transmission unit 3 is arranged at the gearbox 1. The transmission unit 3 includes a first transmission shaft 3002, and the first transmission shaft 3002 is rotatably arranged in the middle of the inner cavity of the gearbox 1 along the vertical direction through a bearing. Through the rotation of the first transmission shaft 3002, the power energy for transmission is provided for the overall transmission system; mainly referring to Figure 3As shown in the figure, the transmission unit 3 further includes: a motor 3001, a driving gear 3003, a second transmission shaft 3004, and a driven gear 3005. The motor 3001 is installed on the upper surface of the gearbox 1, and the output end of the motor 3001 extends into the inner cavity of the gearbox 1 and is connected to the top end of the first transmission shaft 3002. The motor 3001 is electrically connected to the PLC controller 8. By controlling the motor 3001 to start through the PLC controller 8, the first transmission shaft 3002 can be driven to rotate circumferentially; the driving gear 3003 is fixedly installed on the first transmission shaft 3002 and is coaxially arranged with the first transmission shaft 3002. The driving gear 3003 and the first transmission shaft 3002 rotate coaxially driven by the rotation of the first transmission shaft 3002; the bottom end of the second transmission shaft 3004 is vertically and rotatably arranged at the bottom end of the inner cavity of the gearbox 1 through a bearing. The top end of the second transmission shaft 3004 extends upward out of the upper surface of the gearbox 1. The top end of the second transmission shaft 3004 is connected to other equipment, enabling the transmission system to output the transmission power to other equipment and realizing the rotation of other equipment; the driven gear 3005 is fixedly installed on the second transmission shaft 3004 and is coaxially arranged with the second transmission shaft 3004. The driven gear 3005 is meshed with the driving gear 3003. When the driving gear 3003 rotates, the driven gear 3005 can be driven to rotate, thereby realizing the rotation of the second transmission shaft 3004.

[0057] Under normal working conditions, the motor 3001 is controlled to start through the PLC controller 8, prompting the first transmission shaft 3002 to drive the driving gear 3003 to rotate synchronously. Since the side walls of the driving gear 3003 and the driven gear 3005 are meshed, the rotating driving gear 3003 can drive the driven gear 3005 to rotate, so as to realize the rotation of the second transmission shaft 3004. Other components are connected to the top output end of the second transmission shaft 3004, and the power is transmitted outward through the rotation of the second transmission shaft 3004 to realize the rotation of this component.

[0058] For main reference Figure 3 and Figure 4 As shown in the figure, the rotational speed monitoring component 4 is arranged in the inner cavity of the gearbox 1. The rotational speed monitoring component 4 includes a transmitter 4001 and a receiver 4002. The transmitter 4001 is fixedly installed on the first transmission shaft 3002, and the receiver 4002 is installed on the left inner wall of the gearbox 1. The transmitter 4001 and the receiver 4002 are located on the same horizontal line. The transmitter 4001 and the receiver 4002 are respectively electrically connected to the PLC controller 8;

[0059] Through the PLC controller 8, the preset thresholds for the rotational speed of the first transmission shaft 3002 and the transmitter 4001 for one revolution can be set. That is, during the system initialization phase, according to the design parameters of the transmission system, the working load characteristics, and the expected operating conditions, a series of thresholds related to the rotational speed change are preset through the PLC controller 8. These thresholds include key indicators such as the normal rotational speed change range of the first transmission shaft 3002 and the critical locked-rotor rotational speed change rate. When the rotational speed of the first transmission shaft 3002 and the transmitter 4001 for one revolution exceeds the above-mentioned normally preset range, it means that the first transmission shaft 3002 has a tendency to lock up;

[0060] During the rotation of the first transmission shaft 3002, it drives the transmitter 4001 to rotate synchronously in the circumferential direction, that is, to monitor the rotational speed of the second transmission shaft 3004. When the transmitter 4001 rotates one revolution to correspond to the receiver 4002, the monitoring of the rotational speed of the first transmission shaft 3002 for one revolution is realized. When the rotational speed of the first transmission shaft 3002 and the transmitter 4001 for one revolution exceeds the range of the above-mentioned normal preset threshold, it means that the first transmission shaft 3002 has a tendency to lock up. At this time, the transmitter 4001 and the receiver 4002 transmit signals to the PLC controller 8 for processing, and the PLC controller 8 controls the corresponding braking device to perform intermittent braking on the first transmission shaft 3002, avoiding the situation where the first transmission shaft 3002 and the second transmission shaft 3004 lock up due to the rotational speed of the first transmission shaft 3002 exceeding the threshold, and further avoiding the situation where the entire transmission system stalls due to locking up.

[0061] For main reference Figures 5 to 8 As shown, the braking device 5 is arranged at the connection box 2. The braking device 5 includes a first rotating shaft 5001. The bottom end of the first rotating shaft 5001 is rotatably connected to the bottom end inner wall of the connection box 2 through a bearing. A brake disc 5002 is fixedly installed on the first rotating shaft 5001. A positioning seat 5003 is fixedly installed at the top end of the first rotating shaft 5001. The positioning seat 5003 is arranged as a cylindrical structure with an open top end. The inner cavity of the positioning seat 5003 is detachably connected with a second rotating shaft 5004. The second rotating shaft 5004 is coaxial with and fixedly connected to the first transmission shaft 3002. Through the rotation of the first transmission shaft 3002, it can drive the second rotating shaft 5004, the positioning seat 5003, the first rotating shaft 5001, and the brake disc 5002 to perform coaxial circumferential rotation; Two brake blocks 5005 are symmetrically arranged on the left and right sides of the brake disc 5002, and the two brake blocks 5005 can perform symmetrical movement in the horizontal direction towards or away from each other. When the two brake blocks 5005 move towards each other to fit the side wall of the brake disc 5002, the braking of the brake disc 5002 is realized; Among them, the first transmission shaft 3002, the second rotating shaft 5004, the positioning seat 5003, the brake disc 5002, and the first rotating shaft 5001 are all coaxially arranged;

[0062] When the left and right sets of brake pads 5005 move towards each other and fit against the side wall of the brake disc 5002, frictional force is generated upon contact with the rotating brake disc 5002, achieving intermittent braking of the brake disc 5002. That is, by intermittently approaching and fitting against the side wall of the brake disc 5002 with the brake pads 5005, intermittent braking of the first transmission shaft 3002 is achieved, preventing the first transmission shaft 3002 from suddenly locking due to a too rapid decrease in rotational speed, and avoiding a huge impact on the second transmission shaft 3004 and the entire transmission system caused by the sudden locking of the first transmission shaft 3002;

[0063] With the cooperation of the transmitter 4001 and the receiver 4002, the present invention can monitor the rotational speed range of the first transmission shaft 3002 in real time and accurately sense the rotational speed of the first transmission shaft 3002. Since the transmission ratio between the driving gear 3003 and the driven gear 3005 is fixed, by controlling the first transmission shaft 3002 to maintain a stable rotational range, it can ensure that the second transmission shaft 3004 rotates stably and will not be locked due to a sudden increase in load. When the first transmission shaft 3002 encounters sudden situations such as a sudden increase in load, it can promptly capture abnormal changes in rotational speed. By presetting a rotational speed threshold through the PLC controller 8 and calculating the rate of change of rotational speed, once the rotational speed exceeds the threshold, it quickly controls the two sets of brake pads 5005 to intermittently approach and fit against the side wall of the first transmission shaft 3002, achieving braking of the first transmission shaft 3002, effectively preventing the occurrence of the locking phenomenon of the first transmission shaft 3002. Since the driving gear 3003 is meshed with the second transmission shaft 3004, preventing the locking of the first transmission shaft 3002 can prevent the locking of the second transmission shaft 3004, thereby avoiding the entire transmission system from suddenly stopping due to locking, eliminating deformation and damage caused by the sudden shutdown of the equipment, improving the stability and reliability of equipment operation, reducing the frequency and cost of equipment maintenance, reducing the risk of production interruption caused by equipment failures, and ensuring continuous and efficient production.

[0064] Mainly refer to Figures 5 to 7As shown, the braking device 5 further includes a driving assembly, and the driving assembly includes: a cylinder 5006, a moving seat 5007, a first driving rod 5008, and a rack 5009. The cylinder 5006 is installed on the front side wall of the connection box 2, and the output end of the cylinder 5006 extends into the inner cavity of the connection box 2. Moreover, the cylinder 5006 is electrically connected to the PLC controller 8, and the PLC controller 8 can control the cylinder 5006 to perform reciprocating movement in the front and rear directions; the moving seat 5007 is fixedly installed on the rear output end of the cylinder 5006; there are two first driving rods 5008, and the two first driving rods 5008 are symmetrically inclined left and right relative to the moving seat 5007. The two first driving rods 5008 are respectively rotationally connected to the moving seat 5007 through a pin shaft; there are two racks 5009, and the two racks 5009 are symmetrically arranged left and right relative to the moving seat 5007 and are arranged to move horizontally. Moreover, the rack 5009 is rotationally connected to one end of the first driving rod 5008 away from the moving seat 5007 through a pin shaft;

[0065] When there is a tendency for the first transmission shaft 3002 to lock, at this time, the transmitter 4001 and the receiver 4002 transmit signals to the PLC controller 8 for processing. The PLC controller 8 controls the output end of the cylinder 5006 to perform reciprocating movement in the front and rear directions, so as to cause the moving seat 5007 to perform reciprocating movement in the front and rear directions. During the movement of the moving seat 5007, the front end parts of the two first driving rods 5008 are caused to move synchronously, so as to drive the rear end parts of the two first driving rods 5008 to perform reciprocating movement in the horizontal direction. At this time, the two racks 5009 follow the two first driving rods 5008 to perform reciprocating movement in the horizontal direction towards or away from each other, that is, the left and right groups of racks 5009 are caused to move towards or away from each other in the horizontal direction;

[0066] Through the cooperation of the first rotating shaft 5001, the brake disc 5002 and the two brake blocks 5005, the present invention realizes that the brake block 5005 approaches and fits against the side wall of the brake disc 5002, realizes frictional braking of the brake disc 5002, avoids the overspeed rotation of the brake disc 5002, that is, avoids the overspeed rotation of the first transmission shaft 3002. That is, when the first transmission shaft 3002 encounters sudden situations such as a sudden increase in load, the first transmission shaft 3002 is braked, effectively preventing the occurrence of the locking phenomenon of the first transmission shaft 3002.

[0067] Mainly refer to Figure 7As shown, two racks 5009 move horizontally through the first guiding assembly. The first guiding assembly includes: a first slider 5010 and a first guiding rod 5011. There are two first sliders 5010, and the two first sliders 5010 are respectively fixedly installed on the front side walls of the two racks 5009; the first guiding rod 5011 is installed horizontally in the inner cavity of the connection box 2, and the two first sliders 5010 are slidably sleeved on the first guiding rod 5011; when the rack 5009 is driven by the first driving rod 5008 to move, it can drive the first slider 5010 installed on the rack 5009 to move along the outer wall of the first guiding rod 5011, that is, with the cooperation of the first guiding rod 5011 and the first slider 5010, it can ensure that the movement of the rack 5009 always remains in the horizontal direction.

[0068] Mainly refer to Figure 7As shown, the braking device 5 further includes a rotating assembly. There are two sets of rotating assemblies, and the two sets of rotating assemblies are symmetrically arranged left and right with the moving seat 5007 as the axis. Each set of rotating assemblies includes: a rotating rod 5012, a sector gear 5013, a turntable 5014, a driving pin 5015, a moving frame 5016, and a first connecting seat 5017. The rotating rod 5012 is rotatably connected to the inside of the connecting box 2 in the vertical direction through a bearing; the sector gear 5013 is fixedly installed on the rotating rod 5012, and the sector gear 5013 is meshed and connected to the side wall of the rack 5009. When the rack 5009 moves in the horizontal direction, it can drive the sector gear 5013 to rotate with the rotating rod 5012 as the axis; the turntable 5014 is fixedly installed at the top of the rotating rod 5012, and the rotation of the sector gear 5013 drives the rotation of the rotating rod 5012 and the sector gear 5013; the driving pin 5015 is fixedly installed on the upper surface of the turntable 5014, and the driving pin 5015 is eccentrically arranged relative to the center of the turntable 5014. The rotating turntable 5014 can cause the driving pin 5015 to rotate synchronously, and the rotation of the driving pin 5015 always rotates with the center of the turntable 5014 as the axis; the moving frame 5016 is provided with a through cavity for the driving pin 5015 to slide from top to bottom. The moving frame 5016 is slidably sleeved on the driving pin 5015, and the moving frame 5016 can perform reciprocating movement in the horizontal direction. The rotation of the driving pin 5015 causes the moving frame 5016 to move in the horizontal direction; the first connecting seat 5017 is installed on the side wall of the moving frame 5016 close to the first rotating shaft 5001, and the first connecting seat 5017 is set in an L shape. The top end of the first connecting seat 5017 is fixedly connected to the brake block 5005. When the moving frame 5016 moves in the horizontal direction, it can drive the first connecting seat 5017 and the brake block 5005 to move in the horizontal direction; wherein, the rotating rod 5012, the center of the sector gear 5013, and the turntable 5014 are all coaxially arranged, thereby ensuring that the rotation centers of the three are located on the same vertical axis; specifically, the length of the through cavity opened in the moving frame 5016 is greater than the diameter length of the turntable 5014 to ensure that the driving pin 5015 can perform normal displacement in the inner cavity of the moving frame 5016 and avoid affecting the normal movement range of the driving pin 5015 due to the too short length of the inner cavity of the moving frame 5016;

[0069] Through the reciprocating movement of the two racks 5009 in the horizontal direction, the left and right sets of sector gears 5013 can be prompted to perform reciprocating rotation in a positive and negative alternating manner with the rotating rod 5012 at the corresponding position as the axis, and the rotation directions of the left and right sets of sector gears 5013 are opposite. With the positive and negative alternating rotation of the sector gears 5013, the left and right sets of rotating rods 5012, the rotating disk 5014 and the driving pin 5015 can be synchronously reciprocated, thereby driving the two sets of moving frames 5016 to reciprocate in the horizontal direction, and the left and right sets of moving frames 5016 can move toward or away from each other, so as to realize the two sets of first connecting seats 5017 and the brake blocks 5005 to move toward or away from each other in the horizontal direction.

[0070] When the two sets of brake blocks 5005 move toward each other and fit the side wall of the brake disc 5002, the brake disc 5002 can be braked. When the gear shaft tends to lock, direct braking will cause the system speed to drop sharply instantly, triggering a chain reaction in other components and destroying the stability of the entire system. To address this problem, the present invention uses two

[500] to intermittently contact the side wall of the brake disc 5002, so as to make the first transmission shaft 3002 fluctuate within a relatively safe speed range by intermittent braking, thereby avoiding complete locking and allowing the system time to adjust and respond; that is, the present invention can make the speed of the first transmission shaft 3002 fluctuate within a relatively safe range by intermittent braking, providing buffer time for system adjustment, ensuring the continuity of power transmission, and preventing equipment vibration and jamming due to sudden changes in speed; for example, in the transmission system of an automated production line, intermittent braking can ensure the smooth operation of the production line and avoid stagnation or dislocation during product transportation.

[0071] Main references Figure 7 As shown, the mobile frame 5016 moves in the horizontal direction through the second guide assembly, and the second guide assembly includes: a second connecting seat 5018, a second slider 5019, and a second guide rod 5020. The second connecting seat 5018 is fixedly installed on the rear side wall of the mobile frame 5016; the second slider 5019 is fixedly installed on the rear side wall of the second connecting seat 5018; the second guide rod 5020 is fixedly installed in the inner cavity of the connecting box 2 in the horizontal direction, and the second slider 5019 is slidably sleeved on the second guide rod 5020; when the driving pin 5015 When moving along the movable frame 5016, the second connecting seat 5018 and the second slider 5019 can be driven to move synchronously. Since the second slider 5019 can only move in the horizontal direction under the limiting action of the second guide rod 5020, the movement of the movable frame 5016 is ensured to remain in the horizontal direction, thereby ensuring that the movement of the first connecting seat 5017 and the brake block 5005 is also maintained in the horizontal direction, thereby achieving the left and right groups of brake blocks 5005 to be able to move symmetrically in the horizontal direction relative to the brake disc 5002.

[0072] Main referencesFigures 8 to 11 As shown, a second rotating shaft 5004 is detachably connected to the inner cavity of the positioning seat 5003 through a centering positioning unit 6. The centering positioning unit 6 includes: a slot 6001, a plug 6002, a connecting piece 6003, a third slider 6004, and a third guide rod 6005. There are two slots 6001, and the two slots 6001 are symmetrically arranged on the side wall of the second rotating shaft 5004 in the left-right direction; there are two plugs 6002, and the positions of the two plugs 6002 correspond to the positions of the two slots 6001 respectively. The two plugs 6002 move symmetrically in the horizontal direction towards or away from each other relative to the second rotating shaft 5004. When the plug 6002 is embedded in the inner cavity of the slot 6001, the coaxial connection of the second rotating shaft 5004 at the positioning seat 5003 is realized. In this state, the second rotating shaft 5004, the positioning seat 5003, the brake disc 5002, and the first rotating shaft 5001 can all be coaxially connected to the first transmission shaft 3002, thereby ensuring that the above-mentioned components can rotate coaxially after the assembly connection; the connecting piece 6003 is installed on the side of the plug 6002 facing away from the slot 6001; the third slider 6004 is fixedly installed on the side of the connecting piece 6003 facing away from the plug 6002, and the third slider 6004 is installed on the lower surface of the connecting piece 6003; the third guide rod 6005 is vertically installed on the outer side wall of the positioning seat 5003, and the third slider 6004 is slidably sleeved on the third guide rod 6005;

[0073] When the third slider 6004 moves along the third guide rod 6005 towards the second rotating shaft 5004, it can realize that the plug 6002 is gradually embedded in the inner cavity of the slot 6001 opened on the second rotating shaft 5004, that is, the assembly connection between the plug 6002 and the slot 6001 is realized. Since the two groups of plugs 6002 are symmetrically distributed left and right with the vertical central axis of the first rotating shaft 5001 as the reference, after the above-mentioned assembly connection is completed, the second rotating shaft 5004 can be coaxial with the first rotating shaft 5001 and the positioning seat 5003, thereby laying a foundation for the subsequent coaxial rotation of the first transmission shaft 3002, the second rotating shaft 5004, and the first rotating shaft 5001; similarly, by means of the above steps, by accurately adjusting the displacement distance of the plug 6002, the plug 6002 can be flexibly and accurately inserted into the slot 6001 opened on the second rotating shaft 5004 with different thicknesses, so that the present invention can realize the coaxial locking connection between the second rotating shaft 5004 with different thickness diameters and the first rotating shaft 5001.

[0074] Mainly refer to Figure 9 and Figure 11As shown, the centering positioning unit 6 also includes: a second driving rod 6006, a fourth guide rod 6007, a fourth slider 6008, a lifting frame 6009, and a screw 6010. Two second driving rods 6006 are provided, and one end of the second driving rod 6006 is rotatably connected to the connecting piece 6003 through a pin shaft; two fourth guide rods 6007 are provided, and the two fourth guide rods 6007 are vertically installed on the upper surface of the positioning seat 5003 in the vertical direction; the fourth slider 6008 is slidably sleeved on the fourth guide rod 6007, and the second driving rod 600 6 The other end is rotatably connected with the fourth slider 6008 through a pin shaft; the lifting frame 6009 is fixedly installed on the rear side wall of the fourth slider 6008, and the lifting frame 6009 is set in a U shape. The lifting frame 6009 set in a U shape can be connected with the rear side walls of the two fourth sliders 6008, so that the height of the two fourth sliders 6008 can be directly adjusted by adjusting the height of the lifting frame 6009; the screw 6010 is rotatably installed on the upper surface of the positioning seat 5003 through a bearing, and the lifting frame 6009 is threadedly sleeved on the screw 6010;

[0075] When the first transmission shaft 3002 and the first rotating shaft 5001 are coaxially assembled and connected, the driving screw 6010 is rotated to drive the lifting frame 6009 to move downward, so that the two symmetrically arranged fourth sliders 6008 on the left and right ends of the lifting frame 6009 drive the second driving rods 6006 on their respective outer walls to move downward. At this time, the left and right groups of second driving rods 6006 drive the connecting piece 6003 to move toward the second rotating shaft 5004, and at the same time, the third slider 6004 is prompted to move along the third guide rod 6005 toward the second rotating shaft 5004, so that the plug block 6002 is gradually embedded in the inner cavity of the slot 6001 opened on the second rotating shaft 5004, that is, the assembly connection between the plug block 6002 and the slot 6001 is realized.

[0076] Main references Figure 2 As shown, the rear wall of the connection box 2 is provided with an inspection component 7, and the inspection component 7 includes: a window 7001 and a baffle 7002. The window 7001 is opened on the rear wall of the connection box 2, and the window 7001 is arranged corresponding to the position of the central positioning unit 6; the baffle 7002 is pluggable and inserted into the inner cavity of the window 7001. When the baffle 7002 is inserted into the inner cavity of the window 7001, the rear side of the connection box 2 can be closed. Conversely, when the baffle 7002 is pulled upward to cause it to detach from the inner cavity of the window 7001, the window 7001 can be opened, thereby enabling the screw 6010 to be rotated and adjusted to achieve assembly between the positioning seat 5003 and the second rotating shaft 5004.

[0077] It should be noted that the rotational speed monitoring component 4 is an existing device. In this embodiment, it adopts a radio frequency identification system, including a transmitter 4001 and a receiver 4002. The transmitter 4001 and the receiver 4002 are existing devices, and it only needs to meet the requirement of monitoring the rotational speed of the first transmission shaft 3002 when it rotates one week. The model of it is not limited here. Specifically, when the transmitter 4001 rotates one week to correspond to the receiver 4002, the monitoring of the rotational speed of the first transmission shaft 3002 when it rotates one week is realized. The preset threshold values of the rotational speeds of the first transmission shaft 3002 and the transmitter 4001 when they rotate one week are set through the PLC controller 8. That is, in the system initialization stage, a series of thresholds related to rotational speed changes are preset through the PLC controller 8 according to the design parameters of the transmission system, the working load characteristics, and the expected operating conditions. These thresholds include key indicators such as the normal rotational speed change range and the critical locking rotational speed change rate. When the rotational speeds of the first transmission shaft 3002 and the transmitter 4001 when they rotate one week exceed the above normal preset range, it means that the first transmission shaft 3002 has a tendency to lock. The transmitter 4001 and the receiver 4002 transmit signals to the PLC controller 8 for processing. The PLC controller 8 controls the cylinder 5006 to act according to the corresponding instructions, so that the two brake blocks 5005 approach and fit the side wall of the brake disc 5002 intermittently, realizing the intermittent braking of the first rotating shaft 5001, the second rotating shaft 5004, and the first transmission shaft 3002, and avoiding the locking of the first transmission shaft 3002 due to excessive load; the cylinder 5006 adopted in this application is a reciprocating cylinder commonly used in the market with an output end that can reciprocate. In this application, its output end can reciprocate in the front-back direction, and it only needs to meet the above use requirements. The model of it is not limited here; the motor 3001 is a self-locking motor commonly used in the market with an output end that can be locked. When it stops operating, its output end can be self-locked and will not rotate under external force. And the motor 3001 is a positive and negative motor commonly used in the market, and its output end can rotate forward or backward according to the use requirements, and it only needs to meet the above use requirements; the screw 6010 is a screw 6010 that can achieve self-locking in the existing market. When it stops rotating, it can achieve self-locking and will not rotate under the influence of external force; the models of the above existing components are not limited and will not be elaborated too much here.

[0078] The working principle of a transmission system based on gears and gear shafts in this embodiment is as follows:

[0079] The preset threshold for the speed of the first transmission shaft 3002 and the transmitter 4001 to rotate one week is set through the PLC controller 8. That is, in the system initialization stage, according to the design parameters of the transmission system, the working load characteristics, and the expected operating conditions, a series of thresholds related to the speed change are preset through the PLC controller 8. These thresholds include key indicators such as the normal speed change range of the first transmission shaft 3002 and the critical locked-rotor speed change rate. When the speed of the first transmission shaft 3002 and the transmitter 4001 rotating one week exceeds the above normal preset range, it means that the first transmission shaft 3002 has a tendency to lock up;

[0080] The first transmission shaft 3002 and the first rotating shaft 5001 are pre-assembled coaxially: the second rotating shaft 5004 and the first transmission shaft 3002 are coaxially welded and connected, and the bottom end of the second rotating shaft 5004 is made to fit the inner wall bottom end of the positioning seat 5003. By rotating the driving screw 6010, the lifting frame 6009 is driven to move downward, so that the two symmetrically arranged fourth sliders 6008 at the left and right ends of the lifting frame 6009 drive the second driving rods 6006 on their respective outer walls to move downward. At this time, the left and right groups of second driving rods 6006 drive the connecting piece 6003 to move towards the second rotating shaft 5004, and at the same time, the third slider 6004 is made to move along the third guiding rod 6005 towards the second rotating shaft 5004, so as to realize that the insertion block 6002 is gradually embedded in the inner cavity of the slot 6001 opened on the second rotating shaft 5004, that is, the assembly connection between the insertion block 6002 and the slot 6001 is realized. Since the two groups of insertion blocks 6002 are symmetrically distributed about the vertical central axis of the first rotating shaft 5001, after the above assembly connection is completed, the second rotating shaft 5004 can be coaxial with the first rotating shaft 5001 and the positioning seat 5003, thus laying a foundation for the subsequent coaxial rotation of the first transmission shaft 3002, the second rotating shaft 5004, and the first rotating shaft 5001. Similarly, by means of the above steps, by accurately adjusting the displacement distance of the insertion block 6002, the insertion block 6002 can be flexibly and accurately inserted into the slot 6001 opened on the second rotating shaft 5004 with different thicknesses, enabling the present invention to realize the coaxial locking connection between the second rotating shaft 5004 with different thickness diameters and the first rotating shaft 5001;

[0081] Under normal working conditions, the motor 3001 is controlled by the PLC controller 8 to start, prompting the first transmission shaft 3002 to drive the driving gear 3003 to rotate synchronously. Since the driving gear 3003 and the driven gear 3005 are meshed and connected to the side wall, the rotating driving gear 3003 can drive the driven gear 3005 to rotate, so as to realize the rotation of the second transmission shaft 3004. Other components are connected to the top output end of the second transmission shaft 3004, and the rotation of the second transmission shaft 3004 is used to transmit power to the outside to realize the rotation of this component; during the rotation of the first transmission shaft 3002, the transmitter 4001 is driven to rotate circumferentially synchronously, that is, the rotation speed of the second transmission shaft 3004 is monitored; and since the first transmission shaft 3002 is coaxially connected to the second rotating shaft 5004, the positioning seat 5003, the first rotating shaft 5001, and the brake disc 5002, the rotating first transmission shaft 3002 drives the brake disc 5002 to rotate synchronously and coaxially;

[0082] When the transmitter 4001 rotates one full circle to correspond to the receiver 4002, the monitoring of the rotational speed of the first transmission shaft 3002 for one full circle is achieved. When the rotational speeds of the first transmission shaft 3002 and the transmitter 4001 for one full circle exceed the range of the above normal preset threshold values, it indicates that the first transmission shaft 3002 has a tendency to lock. At this time, the transmitter 4001 and the receiver 4002 transmit signals to the PLC controller 8 for processing. The PLC controller 8 controls the output end of the cylinder 5006 to perform reciprocating movement in the front and rear directions, so as to prompt the moving seat 5007 to perform reciprocating movement in the front and rear directions. During the movement of the moving seat 5007, the front end portions of the two first driving rods 5008 are synchronously moved, so as to drive the rear end portions of the two first driving rods 5008 to perform reciprocating movement in the horizontal direction. At this time, the two racks 5009 follow the two first driving rods 5008 to perform reciprocating movement in the horizontal direction towards or away from each other, prompting the left and right groups of sector gears 5013 to perform reciprocating rotation with the corresponding position rotating rods 5012 as the axes, and the rotation directions of the left and right groups of sector gears 5013 are opposite. With the reciprocating rotation of the sector gears 5013 with forward and reverse alternation, the left and right groups of rotating rods 5012, turntables 5014, and driving pins 5015 are enabled to perform synchronous reciprocating rotation. Since the moving frames 5016, second connecting seats 5018, and second sliders 5019 are limited in the horizontal direction by the second guide rods 5020, the driving pins 5015 performing reciprocating rotation with forward and reverse alternation can drive the two groups of moving frames 5016 to perform reciprocating movement in the horizontal direction, and the left and right groups of moving frames 5016 move towards or away from each other, so as to achieve the movement of the two groups of first connecting seats 5017 and brake blocks 5005 towards or away from each other in the horizontal direction; when the left and right groups of brake blocks 5005 move towards each other to fit against the side wall of the brake disc 5002, frictional force is generated when contacting the rotating brake disc 5002, achieving intermittent braking of the brake disc 5002, that is, by intermittently approaching and fitting against the side wall of the brake disc 5002 by the brake blocks 5005, intermittent braking of the first transmission shaft 3002 is achieved, preventing the rotational speed of the first transmission shaft 3002 from dropping too fast and suddenly locking, and avoiding a great impact on the second transmission shaft 3004 and the entire transmission system caused by the sudden locking of the first transmission shaft 3002;

[0083] In terms of monitoring and anti-lock braking, the present invention can accurately monitor the rotational speed range of the gear shaft in real time with the help of sensors working in cooperation, and quickly capture abnormal rotational speeds. By presetting the rotational speed threshold and calculating the change rate, once the rotational speed exceeds the threshold, the braking device can be quickly controlled to effectively prevent the gear shaft from locking, avoid the entire transmission system from stagnating due to locking, greatly improve the operation stability and reliability of the equipment, reduce the equipment maintenance cost and the risk of production interruption, and ensure efficient and continuous production. The braking method adopts intermittent braking. When the gear shaft has a tendency to lock, it avoids the sudden drop in rotational speed, the chain reaction of components, and the impact damage caused by direct braking. The intermittent braking makes the rotational speed of the gear shaft fluctuate within a safe range, provides a buffer for system adjustment, ensures the continuity of power transmission, prevents equipment vibration and jamming, and can also achieve speed reduction and torque control, adapting to various processing conditions and extending the service life of the equipment. The components can be coaxially assembled quickly and with high precision to ensure the coaxial rotation of relevant components and avoid eccentricity. By adjusting the displacement of specific components, different diameter gear shafts can be flexibly adapted, breaking through the specification limitations of traditional braking devices and saving the enterprise's equipment selection and upgrade costs. In addition, the split structure enables the anti-lock braking function components to be flexibly assembled as needed, enhancing the safety and stability of the system and meeting the requirements of diverse application scenarios.

[0084] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A transmission system based on a gear and a gear shaft, comprising a gearbox (1), characterized in that: Further included are: A PLC controller (8), which is installed on the gearbox (1); A connection box (2), which is detachably assembled below the gearbox (1); A transmission unit (3), which is arranged at the gearbox (1). The transmission unit (3) includes a first transmission shaft (3002), and the first transmission shaft (3002) is rotatably arranged in the middle of the inner cavity of the gearbox (1) in the vertical direction; A rotational speed monitoring component (4), which is arranged in the inner cavity of the gearbox (1). The rotational speed monitoring component (4) includes a transmitter (4001) and a receiver (4002). The transmitter (4001) is fixedly installed on the first transmission shaft (3002), the receiver (4002) is installed on the left inner wall of the gearbox (1), and the transmitter (4001) and the receiver (4002) are on the same horizontal line. The transmitter (4001) and the receiver (4002) are electrically connected to the PLC controller (8) respectively; A braking device (5), which is arranged at the connection box (2). The braking device (5) includes a first rotating shaft (5001). The bottom end of the first rotating shaft (5001) is rotatably connected to the bottom end of the inner wall of the connection box (2). A braking disc (5002) is fixedly installed on the first rotating shaft (5001). A positioning seat (5003) is fixedly installed at the top end of the first rotating shaft (5001). The positioning seat (5003) is arranged in a cylindrical structure with an open top. A second rotating shaft (5004) is detachably connected to the inner cavity of the positioning seat (5003). The second rotating shaft (5004) is coaxial and fixedly connected to the first transmission shaft (3002). Two braking blocks (5005) are symmetrically arranged on the left and right sides of the braking disc (5002), and the two braking blocks (5005) can move symmetrically towards or away from each other in the horizontal direction. When the two braking blocks (5005) move towards each other and fit against the side wall of the braking disc (5002), braking of the braking disc (5002) is achieved; Wherein, the first transmission shaft (3002), the second rotating shaft (5004), the positioning seat (5003), the braking disc (5002), and the first rotating shaft (5001) are all coaxially arranged.

2. The transmission system based on gears and gear shafts according to claim 1, characterized in that: The braking device (5) further includes a driving component, and the driving component includes: A cylinder (5006), which is installed on the front side wall of the connection box (2). The output end of the cylinder (5006) extends into the inner cavity of the connection box (2), and the cylinder (5006) is electrically connected to the PLC controller (8); A moving seat (5007), which is fixedly installed on the rear output end of the cylinder (5006); A first driving rod (5008), wherein two first driving rods (5008) are provided, and the two first driving rods (5008) are symmetrically arranged with respect to the movable seat (5007) and tilted, and the two first driving rods (5008) are respectively rotatably connected to the movable seat (5007); The rack (5009) is provided with two racks (5009), and the two racks (5009) are symmetrically arranged to move in the horizontal direction relative to the movable seat (5007), and the racks (5009) are rotatably connected to the end of the first driving rod (5008) away from the movable seat (5007).

3. A transmission system based on gears and gear shafts according to claim 2, characterized in that: The two racks (5009) are moved in the horizontal direction through a first guide assembly, and the first guide assembly comprises: A first sliding block (5010), wherein two first sliding blocks (5010) are provided, and the two first sliding blocks (5010) are respectively fixedly mounted on the front side walls of the two racks (5009); A first guide rod (5011), wherein the first guide rod (5011) is installed in the inner cavity of the connection box (2) along a horizontal direction, and the two first sliding blocks (5010) are slidably sleeved on the first guide rod (5011).

4. A transmission system based on gears and gear shafts according to claim 2, characterized in that: The braking device (5) further comprises a rotating assembly, wherein two groups of the rotating assembly are provided, and the two groups of the rotating assembly are symmetrically arranged with the moving seat (5007) as an axis, and each group of the rotating assembly comprises: A rotating rod (5012), the rotating rod (5012) being rotatably connected to the connection box (2) in a vertical direction; A sector gear (5013), wherein the sector gear (5013) is fixedly mounted on the rotating rod (5012), and the sector gear (5013) is meshingly connected with a side wall of the rack (5009); A rotating disk (5014), wherein the rotating disk (5014) is fixedly mounted on the top of the rotating rod (5012); A driving pin (5015), wherein the driving pin (5015) is fixedly mounted on the upper surface of the rotating disk (5014), and the driving pin (5015) is eccentrically arranged relative to the center of the rotating disk (5014); A movable frame (5016), wherein the movable frame (5016) is provided with a through cavity from top to bottom for the driving pin (5015) to slide, the movable frame (5016) is slidably sleeved on the driving pin (5015), and the movable frame (5016) can reciprocate in the horizontal direction; A first connecting seat (5017), wherein the first connecting seat (5017) is installed on a side wall of the movable frame (5016) close to the first rotating shaft (5001), and the first connecting seat (5017) is configured to be L-shaped, and a top end of the first connecting seat (5017) is fixedly connected to the brake block (5005); Among them, the rotating rod (5012), the center of the sector gear (5013), and the turntable (5014) are all coaxially arranged.

5. A transmission system based on gears and gear shafts according to claim 4, characterized in that: The length of the through cavity opened in the moving frame (5016) is greater than the diameter length of the turntable (5014).

6. A transmission system based on gears and gear shafts according to claim 4, characterized in that: The moving frame (5016) moves horizontally through a second guiding assembly, and the second guiding assembly includes: A second connecting seat (5018) fixedly installed on the rear side wall of the moving frame (5016); A second slider (5019) fixedly installed on the rear side wall of the second connecting seat (5018); A second guiding rod (5020) fixedly installed horizontally in the inner cavity of the connecting box (2), and the second slider (5019) is slidably sleeved on the second guiding rod (5020).

7. A transmission system based on gears and gear shafts according to claim 1, characterized in that: A second rotating shaft (5004) is detachably connected to the inner cavity of the positioning seat (5003) through a centering positioning unit (6), and the centering positioning unit (6) includes: Slots (6001), two slots (6001) are provided, and the two slots (6001) are symmetrically opened on the side wall of the second rotating shaft (5004) left and right; Insert blocks (6002), two insert blocks (6002) are provided, and the positions of the two insert blocks (6002) correspond to the positions of the two slots (6001) respectively. The two insert blocks (6002) move symmetrically in the horizontal direction towards or away from each other relative to the second rotating shaft (5004). When the insert blocks (6002) are embedded in the inner cavity of the slots (6001), coaxial connection of the second rotating shaft (5004) at the positioning seat (5003) is achieved; A connecting piece (6003) installed on the side of the insert block (6002) facing away from the slot (6001); A third slider (6004) fixedly installed on the side of the connecting piece (6003) facing away from the insert block (6002), and the third slider (6004) is installed on the lower surface of the connecting piece (6003); A third guiding rod (6005) vertically installed on the outer side wall of the positioning seat (5003), and the third slider (6004) is slidably sleeved on the third guiding rod (6005).

8. A transmission system based on gears and gear shafts according to claim 7, characterized in that: The centering positioning unit (6) further includes: Second driving rod (6006), two of the second driving rods (6006) are provided, and one end of the second driving rod (6006) is rotatably connected to the connecting piece (6003); Fourth guiding rod (6007), two of the fourth guiding rods (6007) are provided, and the two fourth guiding rods (6007) are vertically and perpendicularly installed on the upper surface of the positioning seat (5003); Fourth slider (6008), the fourth slider (6008) is slidably sleeved on the fourth guiding rod (6007), and the other end of the second driving rod (6006) is rotatably connected to the fourth slider (6008); Lifting frame (6009), the lifting frame (6009) is fixedly installed on the rear side wall of the fourth slider (6008), and the lifting frame (6009) is U-shaped; Screw rod (6010), the screw rod (6010) is rotatably and perpendicularly installed on the upper surface of the positioning seat (5003), and the lifting frame (6009) is threadedly sleeved on the screw rod (6010).

9. The transmission system based on gears and gear shafts according to claim 8, wherein: A maintenance component (7) is provided on the rear side wall of the connection box (2), and the maintenance component (7) includes: Window (7001), the window (7001) is opened on the rear side wall of the connection box (2), and the window (7001) is arranged corresponding to the position of the central positioning unit (6); Baffle plate (7002), the baffle plate (7002) is pluggably inserted into the inner cavity of the window (7001).

10. The transmission system based on gears and gear shafts according to claim 1, wherein: The transmission unit (3) further includes: Motor (3001), the motor (3001) is installed on the upper surface of the gear box (1), and the output end of the motor (3001) extends into the inner cavity of the gear box (1) and is connected to the top end of the first transmission shaft (3002), and the motor (3001) is electrically connected to the PLC controller (8); Driving gear (3003), the driving gear (3003) is fixedly installed on the first transmission shaft (3002) and is coaxially arranged with the first transmission shaft (3002); Second transmission shaft (3004), the bottom end of the second transmission shaft (3004) is vertically and rotatably arranged at the bottom end of the inner cavity of the gear box (1), and the top end of the second transmission shaft (3004) extends upward out of the upper surface of the gear box (1); Driven gear (3005), the driven gear (3005) is fixedly installed on the second transmission shaft (3004) and is coaxially arranged with the second transmission shaft (3004), and the driven gear (3005) is meshed and connected with the driving gear (3003).

Images