A winch

Abstract

The application relates to a winch, which comprises a base, a winding drum assembly, an electric drive assembly arranged on the base in sequence, and a first transmission assembly arranged between the winding drum assembly and the electric drive assembly; the winding drum assembly comprises first and second winding drums arranged side by side; the first transmission assembly comprises a reversing gear mechanism and a self-locking transmission mechanism; the reversing gear mechanism is in transmission connection with a power output end of the electric drive assembly; the self-locking transmission mechanism comprises a worm, a first worm wheel and a second worm wheel; the worm is in transmission connection with the reversing gear mechanism; the worm is in meshing connection with the first worm wheel and the second worm wheel respectively; the first worm wheel is in coaxial transmission connection with a central rotating shaft of the first winding drum; and the second worm wheel is in coaxial transmission connection with a central rotating shaft of the second winding drum. The application can adapt to different working environments and load requirements, improve the universality and practicability of the equipment, reduce the overall weight of the equipment, realize energy-saving operation, reduce energy waste, and improve the working safety of the equipment.

Description

Technical Field

[0001] This invention belongs to the technical field of heavy-duty traction equipment, and particularly relates to a winch. Background Technology

[0002] As a commonly used heavy-duty traction device, winch is widely used in construction, mining, power line construction, emergency rescue, and other fields. Its core function is to drive the drum to rotate, thereby winding and unwinding the wire rope to complete the traction, lifting, or lowering of heavy objects. However, with the increasing demands for safety, reliability, and efficiency in industrial traction operations, the transmission structure of existing winches has gradually revealed many shortcomings, making it difficult to meet the stable operation requirements under large-span, heavy-load conditions.

[0003] Currently, there are various drive methods for winches on the market. Some of them adopt a multi-motor drive structure, which can improve output power, but also has problems such as complex structure, high manufacturing cost, and difficulty in motor synchronization control. It is prone to malfunctions such as uneven motor force and transmission disorder, affecting the reliability of operation. Among them, the existing motor-driven winches use dual-motor drive. In its design, the two motors cannot work together. They can only switch between different power motors for light and heavy loads, resulting in redundant power modules, greatly increasing weight and equipment cost, and making the control system complex and unreliable.

[0004] Furthermore, in terms of transmission, existing single worm gear drives are prone to stress concentration and rapid wear under heavy-load and long-span transmission scenarios. This not only reduces transmission reliability and service life but may also lead to serious safety accidents due to damage to the single worm gear structure. When the single worm gear breaks or fails due to wear, it will directly cause power transmission interruption, resulting in the load sliding down, the winch reversing, and ultimately causing equipment damage, personal injury, and other safety hazards. While pure gear drives can achieve a large transmission ratio, they lack effective self-locking performance, and are prone to safety risks such as the load sliding down when the machine is stopped or the load is stationary.

[0005] In addition, the transmission mechanisms of existing winches often have problems such as long transmission chains and a large number of parts, which not only increases the manufacturing cost and maintenance difficulty of the equipment, but also leads to a decrease in transmission efficiency and an increase in energy loss due to too many transmission links. At the same time, some transmission mechanisms have poor compatibility with DC motors, which cannot give full play to the advantages of DC motors in terms of high efficiency and convenient speed adjustment, resulting in high energy consumption of the whole machine and limited operating efficiency.

[0006] Therefore, how to provide a winch that is simple in structure, stable in operation, highly safe, and has high transmission reliability and efficiency is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0007] To solve at least one of the above-mentioned technical problems, the present invention provides a winch, comprising: A base, a winch assembly, an electric drive assembly, and a first transmission assembly disposed between the winch assembly and the electric drive assembly are sequentially arranged on the base; The winch assembly includes a first winch and a second winch arranged side by side; The first transmission assembly includes: The reversing transmission mechanism is located near the electric drive assembly and is connected to the power output end of the electric drive assembly. The self-locking transmission mechanism is located on the side of the reversing rotation mechanism away from the electric drive assembly. It includes a worm, a first worm wheel, and a second worm wheel. The worm is driven by the reversing rotation mechanism. The worm meshes with the first worm wheel and the second worm wheel respectively. The first worm wheel is coaxially driven by the central shaft of the first winch. The second worm wheel is coaxially driven by the central shaft of the second winch. The self-locking transmission mechanism is used to drive the winch assembly to rotate and prevent the winch assembly from reversing under load.

[0008] Furthermore, the worm is a toroidal worm, located on the side of the first worm wheel and the second worm wheel near the base, and the worm forms a secondary enveloping toroidal meshing pair with the first worm wheel and the second worm wheel respectively.

[0009] Furthermore, the electric drive assembly includes a DC permanent magnet synchronous motor, which is used to drive the commutation and speed change mechanism.

[0010] Furthermore, the reversing transmission mechanism includes: The first gearbox includes multiple sets of chain drive pairs and a first electromagnetic clutch. The first electromagnetic clutch is set on the output shaft of the first electric drive assembly. The first electromagnetic clutch is set one-to-one with the chain drive pairs and is connected to the chain drive pairs for driving control of the rotation and start / stop of the corresponding chain drive pairs. The reversing transmission unit is located on the side of the first gearbox away from the electric drive assembly, and the reversing transmission unit is connected to the first gearbox and the self-locking transmission mechanism.

[0011] Furthermore, the chain drive pair includes: The drive sprocket is mounted on the output shaft of the electric drive assembly and connected to the corresponding first electromagnetic clutch. The drive sprocket is rotated by the corresponding first electromagnetic clutch. The driven sprocket is located on the side adjacent to the driving sprocket and the first electromagnetic clutch, and is connected to the driving sprocket for transmission. A chain is fitted onto the driving sprocket and the driven sprocket, and is tensioned by the driving sprocket and the driven sprocket. The chain is used to drive and connect the driving sprocket and the driven sprocket. The first drive shaft passes through the driven sprocket and is connected to the driven sprocket in a driving connection. The output end of the first drive shaft is connected to the reversing drive unit in a driving connection.

[0012] Furthermore, the reversing transmission mechanism includes: The transmission unit includes multiple sets of gear pairs with different transmission ratios. The multiple sets of gear pairs are arranged to mesh sequentially along the power transmission direction. The input gear of the transmission unit is sleeved on the output shaft of the electric drive assembly. The transmission gear is sleeved on the input end of the worm and fixedly connected to the worm. It meshes with the output gear of the transmission unit to drive the worm to rotate. The shifting section, located near the input gear of the transmission section, is used to engage the input gear with different gears, thereby enabling the selection of gear pairs with different transmission ratios.

[0013] Furthermore, the gear shifting unit includes: A sliding shaft is positioned near the input gear of the transmission unit; The shift fork is slidably mounted on the sliding shaft; The operating handle has one end connected to the shift fork, which can drive the shift fork to move along the sliding shaft; The second electromagnetic clutch is slidably mounted on the sliding shaft and located on the side of the shift fork away from the electric drive assembly. A push rod is connected between the second electromagnetic clutch and the shift fork. The shift fork is used to drive the second electromagnetic clutch to slide along the sliding shaft, so that the second electromagnetic clutch corresponds to different gears and selectively engages gear pairs with different transmission ratios into the transmission chain to achieve gear switching.

[0014] Furthermore, it also includes: The second transmission component is mounted on the base and located at the end of the worm gear away from the reversing transmission mechanism, and is connected to the worm gear drive. The first traction rope assembly is mounted on the base and located at the power output end of the second transmission assembly, and is arranged side by side with the winch assembly. The first traction rope assembly is used to cooperate with the winch assembly and to guide and compress the wire rope. The second transmission assembly is used to control the wire inlet of the second traction rope assembly.

[0015] Furthermore, the second transmission assembly includes: The second gearbox is located at the end of the worm gear away from the reversing speed change mechanism. A coupling is provided between the second gearbox and the worm gear, and the second gearbox is connected to the worm gear transmission through the coupling. The second drive shaft is located on the power output side of the second gearbox and is connected to the output shaft of the second gearbox. The end of the second drive shaft away from the second gearbox is connected to the first traction rope assembly. The third electromagnetic clutch is located between the output shaft of the second gearbox and the second transmission shaft, and is used to control the rotation of the second transmission shaft.

[0016] Furthermore, the first traction rope assembly includes: The tow rope support is mounted on the base. The handwheel screw is located at the end of the traction rope bracket away from the base, and passes through the traction rope bracket, and is set perpendicular to the base; A clamping plate is located at one end of the handwheel screw near the base and is fixedly connected to the handwheel screw. The pressure block is located on the side of the pressure plate away from the handwheel screw, and a pressure wheel is provided on the side of the pressure block away from the pressure plate. The pressure wheel and the pressure block are rotatably connected. Guide shafts are located on both sides of the handwheel screw. Both guide shafts pass through the traction rope bracket and the pressure plate in sequence and are connected to the pressure block. A spring is sleeved on the part of the guide shaft located between the pressure block and the pressure plate. The traction rope roller is located at the bottom of the traction rope bracket, on the side of the pressure block away from the handwheel screw. The pressure wheel and the traction rope roller are arranged in a one-to-one correspondence. The traction rope roller is connected to the second drive shaft. The traction rope roller is used to drive the wire rope to enter and to press the wire rope together with the pressure wheel.

[0017] Furthermore, it also includes a second traction rope assembly, which is mounted on the base and located on the side of the drum assembly opposite to the first traction rope assembly. The second traction rope assembly is used to guide, limit, and fix the wire rope before it enters the drum assembly.

[0018] Furthermore, it also includes an electronic control component, which is mounted on the base and located close to the electric drive component. It is electrically connected to the electric drive component, the first transmission component, and the second transmission component, and is used to control the electric drive component, the first transmission component, the second transmission component, and the first traction rope component and to provide power.

[0019] This invention provides a winch comprising a base, a winch assembly, an electric drive assembly, and a first transmission assembly. The winch assembly winds a steel wire rope to achieve traction or lifting functions. The first transmission assembly, positioned between the winch assembly and the electric drive assembly, includes a reversing speed-changing mechanism and a self-locking transmission mechanism. The reversing speed-changing mechanism is located close to the electric drive assembly and is connected to its power output end. This invention achieves reliable transmission reversing and speed change over large spans through the reversing speed-changing mechanism, effectively solving problems such as limited transmission distance, reversing jams, and unstable speed changes in traditional winches. It enables stable power transmission in large-span installation scenarios, adapts to different installation space requirements, improves transmission reliability and stability, and enhances the smoothness and accuracy of traction operations by driving the winch assembly to rotate through synchronous transmission. In addition, a self-locking transmission mechanism is located on the side of the reversing rotation mechanism away from the electric drive assembly. This mechanism includes a worm, a first worm wheel, and a second worm wheel. The worm is driven by the reversing rotation mechanism, and meshes with both the first and second worm wheels. The first worm wheel is coaxially driven by the central shaft of the first winch, and the second worm wheel is coaxially driven by the central shaft of the second winch. This self-locking transmission mechanism drives the winch assembly to rotate and prevents it from reversing under load. This application uses a double worm gear structure to achieve synchronous transmission between the first and second winches, significantly increasing the tooth surface contact area and load-bearing capacity, enhancing the equipment's traction capability, easily handling heavy-load traction operations, meeting the needs of high-intensity operations such as power engineering and field rescue, while avoiding energy waste during power transmission and improving power utilization. Furthermore, its transmission efficiency is significantly improved, greatly enhancing the reliability and service life of the self-locking transmission mechanism, and reducing component wear and failure rate. Furthermore, this application utilizes a synchronous transmission design with a double worm gear structure to precisely drive the two winches to rotate synchronously, ensuring that the winding and unwinding speeds and traction forces of the two winches are completely consistent. This solves the problems of cable tangling, rope knots, and uneven tension caused by asynchronous transmission in traditional double-winch winches, improving the stability and accuracy of traction operations, effectively protecting the traction cable, and extending its service life. The self-locking transmission mechanism in this application can achieve reverse self-locking, meaning that only the electric drive component can drive the winch assembly to rotate through the transmission mechanism, and the winch assembly cannot drive the first transmission component in the reverse direction. During traction operations, even in the event of sudden situations such as motor power failure or power interruption, the winch assembly can remain stationary, effectively preventing safety hazards such as load slippage and cable loosening. This provides double protection for the safety of operators and equipment, and is especially suitable for high-risk operation scenarios such as lifting and traction, improving the operational safety of the equipment. The winch of this application can be adapted to different operating environments and load requirements, greatly improving the versatility and practicality of the equipment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort. In the drawings, the same parts use the same reference numerals. The drawings are not drawn to scale.

[0021] Figure 1 This is a perspective view of an embodiment of a winch of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of part A; Figure 3 This is another perspective view of an embodiment of a winch of the present invention; Figure 4 This is a partial schematic diagram of an embodiment of a winch of the present invention; Figure 5 This is a perspective view of another embodiment of a winch of the present invention; Figure 6 This is a partial schematic diagram of another embodiment of a winch of the present invention; Figure 7 This is another perspective schematic diagram of another embodiment of a winch of the present invention; Figure 8 This is another partial schematic diagram of an embodiment of a winch of the present invention; Figure 9 This is yet another partial schematic diagram of an embodiment of a winch of the present invention; Figure 10 This is another partial schematic diagram of an embodiment of a winch of the present invention.

[0022] Key component symbols: 100-Windmill; 110-Base; 120-Windmill assembly; 121-First winch; 122-Second winch; 123-Connecting frame; 130-Electric drive assembly; 131-DC permanent magnet synchronous motor; 140-First transmission assembly; 141-Reversing speed change mechanism; 1411-First gearbox; 1411a-First electromagnetic clutch; 1411b-Drive sprocket; 1411c-Driven sprocket; 1411d-First drive shaft; 1412-Reversing transmission unit; 1413-Shift fork; 1414-Second electromagnetic clutch; 1415-Sliding shaft; 1416-Transmission unit; 14 17-Transmission gear; 1418-Operating handle; 142-Self-locking transmission mechanism; 1421-Worm gear; 1422-First worm wheel; 1423-Second worm wheel; 150-Second transmission assembly; 151-Second reduction gearbox; 152-Third electromagnetic clutch; 153-Second transmission shaft; 154-First gear; 155-Second gear; 160-First traction rope assembly; 161-Traction rope bracket; 162-Handwheel screw; 163-Pressure plate; 164-Pressure block; 165-Pressure wheel; 166-Traction rope roller; 167-Guide shaft; 168-Spring; 170-Second traction rope assembly; 180-Electrical control assembly. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0025] It should also be noted that if the embodiments of the present invention involve directional indications, such as up, down, left, right, front, back, etc., these directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly. Furthermore, if the embodiments of the present invention involve descriptions such as "first," "second," "S1," "S2," "step one," "step two," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance, or implicitly indicating the number of technical features indicated or the order of method execution. Those skilled in the art will understand that anything that does not violate the inventive concept and does not contradict the inventive points should be included within the scope of protection of the present invention.

[0026] like Figure 1 , Figure 5 and Figure 6 As shown, the present invention provides a winch 100, which includes a base 110 and a winch assembly 120 and an electric drive assembly 130 sequentially disposed on the base 110, and a first transmission assembly 140 disposed between the winch assembly 120 and the electric drive assembly 130.

[0027] Specifically, the first transmission assembly 140 includes a reversing speed change mechanism 141 and a self-locking transmission mechanism 142.

[0028] The reversing transmission mechanism 141 is located near the electric drive assembly 130 and is connected to the power output end of the drive component, which drives the reversing transmission mechanism 141. The self-locking transmission mechanism 142 is located on the side of the reversing rotation mechanism away from the electric drive assembly 130, and is connected to the reversing rotation mechanism and the winch assembly 120. It drives the winch assembly 120 to rotate and prevents the winch assembly 120 from reversing under load.

[0029] The winch assembly 120 includes a first winch 121 and a second winch 122, both of which are mounted on the base 110 and arranged side by side. The central shafts of both the first winch 121 and the second winch 122 are connected to the self-locking transmission mechanism 142. The winch assembly 120 is used to wind steel wire rope to achieve traction or lifting functions.

[0030] Specifically, such as Figure 8 As shown, the self-locking transmission mechanism 142 in this embodiment includes a worm 1421, a first worm wheel 1422 and a second worm wheel 1423. The worm 1421 is connected to the reversing rotation mechanism, the first worm wheel 1422 is coaxially connected to the central shaft of the first winch 121, and the second worm wheel 1423 is coaxially connected to the central shaft of the second winch 122.

[0031] In this embodiment, the present invention provides a winch 100, which includes a base 110, a winch assembly 120, an electric drive assembly 130, and a first transmission assembly 140. The winch assembly 120 winds a steel wire rope to achieve traction or lifting functions. In this embodiment, the first transmission assembly 140 is disposed between the winch assembly 120 and the electric drive assembly 130. The first transmission assembly 140 includes a reversing speed change mechanism 141 and a self-locking transmission mechanism 142. The reversing speed change mechanism 141 is disposed close to the electric drive assembly 130 and is connected to the power output end of the electric drive assembly 130 for transmission. The electric drive assembly 130 drives the reversing speed change mechanism 141 for transmission. This embodiment achieves reliable transmission reversing and speed change over a large span through the reversing and speed change mechanism 141, effectively solving the problems of limited transmission distance, reversing jamming, and unstable speed change in traditional winches 100. It can achieve stable power transmission in large-span installation scenarios, adapt to different installation space requirements, improve the reliability and stability of transmission, and drive the winch assembly 120 to rotate through synchronous transmission, thereby improving the smoothness and accuracy of traction operations.

[0032] This embodiment utilizes a self-locking transmission mechanism 142, including a worm gear 1421, a first worm wheel 1422, and a second worm wheel 1423. The worm gear 1421 is connected to a reversing rotation mechanism, and it meshes with both the first and second worm wheels 1422 and 1423. The first worm wheel 1422 is coaxially connected to the central shaft of the first winch 121, and the second worm wheel 1423 is coaxially connected to the central shaft of the second winch 122. Through the synchronous transmission design of the double worm gear structure, the two winches can be precisely driven to rotate synchronously, ensuring that the winding and unwinding speeds and traction forces of the two winches are completely consistent. This effectively solves the problems of cable tangling, rope knots, and uneven tension caused by asynchronous transmission in traditional double-winch winches 100, improving the stability and accuracy of traction operations, effectively protecting the traction cable, and extending its service life. Furthermore, the self-locking transmission mechanism 142 is connected to the reversing rotation mechanism and the winch assembly 120. The self-locking transmission mechanism 142 drives the winch assembly 120 to rotate and prevents the winch assembly 120 from reversing under load. The high transmission efficiency of the self-locking transmission mechanism 142 reduces energy loss during power transmission, lowers motor energy consumption, achieves energy-saving operation, further reduces operating costs, improves power transmission efficiency, and reduces energy waste. In this embodiment, the self-locking transmission mechanism 142 can achieve reverse self-locking, meaning that only the electric drive assembly 130 can drive the winch assembly 120 to rotate through the transmission mechanism; the winch assembly 120 cannot drive the first transmission assembly 140 to rotate in the reverse direction. During traction operations, even in the event of sudden situations such as motor power failure or power interruption, the winch assembly 120 can remain stationary, effectively preventing safety hazards such as load slippage and cable loosening. This provides dual protection for the safety of operators and equipment, and is especially suitable for high-risk operation scenarios such as lifting and traction, improving the operational safety of the equipment. The winch 100 of this embodiment can adapt to different operating environments and load requirements, significantly improving the versatility and practicality of the equipment. The winch 100 in this embodiment has a compact overall structure, integrating functions such as power drive, transmission reversal, speed change, and synchronous rotation of the winch assembly 120 into one unit, reducing the space occupied by the equipment and providing good adaptability. While simplifying the structure, this embodiment improves the overall reliability of the equipment, reduces component wear and failure rate, and reduces the purchase cost, maintenance cost, and operating cost of the equipment.

[0033] Optionally, the worm 1421 is, for example, a toroidal worm, located on the side of the first worm wheel 1422 and the second worm wheel 1423 near the base 110. The worm 1421 meshes with the first worm wheel 1422 and the second worm wheel 1423, forming a planar double-envelope toroidal meshing pair. The planar double-envelope toroidal worm has a toroidal shape, allowing for simultaneous contact of multiple teeth and lines when meshing with the first and second worm wheels. It has a large overall radius of curvature and high contact strength, enabling it to withstand the large pulling force, impact loads, and frequent start-stop conditions during winch operation. It is less prone to tooth surface wear, pitting, and tooth breakage, resulting in more reliable and durable transmission. Furthermore, the double-envelope tooth surface is designed with conjugate optimization, facilitating the formation of a hydrodynamic oil film between the tooth surfaces. This results in low friction loss, high transmission efficiency, and low temperature rise during continuous winch operation, preventing transmission failure due to overheating and improving the overall continuous working capacity and service life of the machine. This planar double-envelope toroidal worm gear structure, with its reasonable lead angle design, possesses excellent reverse self-locking characteristics. When the winch assembly is under heavy load, it can effectively prevent dangerous situations such as load reversal, slippage, and derailment, achieving safe self-locking without the need for an additional brake, simplifying the structure and improving operational safety. Furthermore, the planar double-envelope pair has small meshing backlash and good transmission rigidity, resulting in minimal impact and no significant backlash during reversal, start-up, and sudden load changes. This ensures smooth winch start-up and stop, precise traction positioning, and improved controllability and safety of the winch operation. In this embodiment, the toroidal worm can simultaneously and stably mesh with both the first and second worm gears, achieving synchronous rotation of the two winches with a single worm. The structure is compact and has a short transmission chain, ensuring balanced tension on both winches and facilitating arrangement within the limited space inside the winch, resulting in a simpler and more reliable overall structure. This embodiment adopts a planar double-envelope toroidal worm gear pair, which enables the self-locking transmission mechanism to have the advantages of high load-bearing capacity, high efficiency, strong self-locking, smooth transmission, and compact structure. It is particularly suitable for the heavy-duty, self-locking, safe and reliable working requirements of winch, and significantly improves the overall performance and service life of the machine.

[0034] Specifically, in this embodiment, the worm 1421, the first worm wheel 1422, and the second worm wheel 1423 are, for example, a double-circular-arc worm gear. This embodiment uses a double-circular-arc worm gear structure to achieve synchronous transmission. Its unique double-circular-arc tooth profile design significantly increases the tooth surface contact area and load-bearing capacity compared to traditional worm gears. Combined with a large transmission ratio design, it can efficiently convert the high-speed rotation of the electric drive component 130 into the low-speed, high-torque required by the winch, significantly enhancing the traction capacity of the equipment. It can easily handle heavy-load traction operations and meet the high-intensity operation requirements of power engineering, field rescue, etc., while avoiding energy waste during power transmission and improving power utilization. In addition, the self-locking transmission mechanism 142 has high transmission efficiency, effectively reducing power loss during transmission, reducing the energy consumption of the electric drive component 130, achieving energy-saving operation, and further reducing operating costs. Compared with traditional ordinary worm gear transmission mechanisms, the transmission efficiency is significantly improved, and long-term use can save a lot of energy. Meanwhile, the double circular arc tooth profile design optimizes the meshing state of the tooth surface, reduces tooth surface wear and transmission noise, ensures smooth operation without jamming, significantly improves the reliability and service life of the self-locking transmission mechanism 142, and reduces component wear and failure rate.

[0035] Optionally, this embodiment employs a bottom-mounted oil-immersion lubrication mode for heavy-duty transmission, avoiding wear problems in the worm gear 1421 transmission and increasing equipment lifespan. Simultaneously, the self-locking function of the self-locking transmission mechanism 142 ensures safety during power failures when heavy objects are suspended in mid-air. Furthermore, the intermediate section of the worm gear 1421 utilizes an intermediate support structure, significantly increasing the stability of the worm gear transmission.

[0036] Optionally, such as Figure 8 As shown, the winch assembly 120 in this embodiment also includes a connecting frame 123. The connecting frame 123 is disposed at one end of the first winch 121 and the second winch 122 away from the self-locking transmission mechanism 142, and is hinged to the central rotating shaft of the first winch 121 and the second winch 122. In this embodiment, the first winch 121 and the second winch 122 are connected and supported by the connecting frame 123.

[0037] Optionally, the connecting frame 123 in this embodiment includes a connecting strip and two support rods. The connecting strip is connected to the central pivot of the first winding drum 121 and the second winding drum 122. One end of the two support rods is connected to the connecting strip, and the other end is connected to the base 110. The two support rods and the base 110 form a triangular support structure, so that the first winding drum 121 and the second winding drum 122 are stably supported on the base 110.

[0038] Optionally, such as Figure 4As shown, the driving component in this embodiment is, for example, a 10kW DC permanent magnet synchronous motor 131. The DC permanent magnet synchronous motor 131 drives the commutation and speed change mechanism 141. The DC permanent magnet synchronous motor 131 includes functions such as speed control, load sensing, automatic speed switching, and energy-saving control. In conjunction with the high-speed speed change module, it achieves automatic switching of the maximum operating speed for different loads. This embodiment uses a single DC motor as the sole power source. Compared to traditional multi-motor drive schemes, this significantly simplifies the equipment's power system structure, reduces the number of motors and the use of supporting electronic control components, and lowers the overall weight, volume, and manufacturing cost of the equipment. It also facilitates the handling, installation, and relocation of the equipment for field operations, solving the pain points of bulky and inconveniently mobile multi-motor drive equipment. The DC permanent magnet synchronous motor 131 has the advantages of rapid start-up response, stable torque output, and a wide speed range. It can quickly adapt to the traction requirements of different load conditions, achieving both smooth traction with high torque at low speeds and flexible adjustment of operating speed to meet the requirements of diverse operating scenarios. In addition, the single-motor drive mode reduces the failure points of the power source and avoids problems such as response differences and synchronization deviations that may occur when multiple motors work together. Later maintenance only requires inspection and maintenance of a single motor, which greatly reduces the workload, maintenance costs and downtime, and improves the continuous operation capability and service life of the equipment. At the same time, the DC permanent magnet synchronous motor 131 is adapted to battery drive, making it more suitable for field operation scenarios without external power supply, with outstanding portability advantages.

[0039] In one embodiment, such as Figure 1 and Figure 3 As shown, the reversing transmission mechanism 141 in this embodiment includes a first reduction gearbox 1411 and a reversing transmission part 1412.

[0040] Among them, such as Figure 4 As shown, the first reduction gearbox 1411 includes a first electromagnetic clutch 1411a and multiple sets of chain drive pairs. The first electromagnetic clutch 1411a is disposed on the output shaft of the first drive member. The first electromagnetic clutch 1411a is disposed one-to-one with the chain drive pairs and is connected to the chain drive pairs for driving, and is used to control the rotation and start / stop of the corresponding chain drive pairs. Optionally, in this embodiment, there are, for example, two sets of multiple chain drive pairs, and the first electromagnetic clutch 1411a is also, for example, two sets. In this embodiment, two sets of first electromagnetic clutches 1411a are selected, which have two speed adjustment gears to realize automatic switching of the maximum working speed for light load and heavy load respectively. The light load is, for example, a load of less than 2T, and the heavy load is, for example, a load of more than 5T.

[0041] Furthermore, the reversing transmission unit 1412 is located on the side of the first reduction gearbox 1411 opposite to the electric drive assembly 130, and the reversing transmission unit 1412 is drive-connected to the first reduction gearbox 1411 and the self-locking transmission mechanism 142. In this embodiment, the reversing transmission unit 1412 is, for example, a transmission structure composed of two gears and a ring gear chain. Specifically, one gear in the reversing transmission unit 1412 is mounted on the output shaft of the first reduction gearbox 1411, and the other gear is mounted on the input shaft of the self-locking rotation mechanism. The ring gear chain in the reversing transmission unit 1412 is mounted on the two gears, thereby connecting the two gears. The reversing transmission unit 1412 in this embodiment can solve the problem of reliable transmission over a large span and realize the intermediate transmission of the modular high and low transmission box.

[0042] In this embodiment, the chain drive pair includes a driving sprocket 1411b, a driven sprocket 1411c, a chain (not shown in the figure), and a first drive shaft 1411d.

[0043] Specifically, in this embodiment, the driving sprocket 1411b is mounted on the output shaft of the drive component and connected to the corresponding first electromagnetic clutch 1411a, controlling the rotation of the driving sprocket 1411b via the first electromagnetic clutch 1411a. In this embodiment, the driven sprocket 1411c is located on the side adjacent to the driving sprocket 1411b and the first electromagnetic clutch 1411a, and is drive-connected to the driving sprocket 1411b. In this embodiment, the chain is sleeved on the driving sprocket 1411b and the driven sprocket 1411c, and is tensioned by the driving sprocket 1411b and the driven sprocket 1411c. The chain is used for drive-connecting the driving sprocket 1411b and the driven sprocket 1411c. Optionally, the chain in this embodiment is, for example, a ring toothed chain.

[0044] The first drive shaft 1411d passes through the driven sprocket 1411c and is connected to the driven sprocket 1411c in a driving connection. The output end of the first drive shaft 1411d is connected to the reversing drive unit 1412 in a driving connection.

[0045] Optionally, the reversing transmission mechanism 141 includes a gearbox body, and the driving sprocket 1411b, the driven sprocket 1411c, the chain and the first drive shaft 1411d are all disposed in the gearbox body. The first drive shaft 1411d is rotatably mounted on the gearbox body through bearings, and the output end of the first drive shaft 1411d extends out of the gearbox body.

[0046] In this embodiment, the first electromagnetic clutch 1411a includes an electromagnetic drive wheel, an electromagnetic chuck, and an electromagnetic driven wheel. One side of the electromagnetic driven wheel is connected to the drive sprocket 1411b. The electromagnetic drive wheel is sleeved on the output shaft of the DC permanent magnet synchronous motor 131. Both the electromagnetic driven wheel and the drive sprocket 1411b are connected to the output shaft of the DC permanent magnet synchronous motor 131 through retaining rings. One end of the first transmission shaft 1411d passes through the reduction gearbox and is rotatably connected to the reversing transmission part 1412.

[0047] Specifically, when the first electromagnetic clutch 1411a is not energized, the electromagnetic driven wheel can rotate arbitrarily relative to the electromagnetic driving wheel, and the two are not "connected". When the electromagnetic clutch is energized, the electromagnetic driven wheel can "combine" with the electromagnetic driving wheel to achieve synchronous rotation while the electromagnetic driving wheel is rotating. In this embodiment, the automatic switching of gears for different loads can be achieved by automatically controlling the energization and de-energization of the first electromagnetic clutch 1411a.

[0048] In other embodiments, such as Figure 5 and Figure 6 As shown, the reversing speed change mechanism 141 includes a transmission part 1416, a transmission gear 1417, and a shifting part.

[0049] The transmission unit 1416 includes multiple sets of gear pairs with different transmission ratios, which are arranged in sequence meshing along the power transmission direction. The input gear of the transmission unit 1416 is sleeved on the output shaft of the drive component. The transmission gear 1417 is sleeved on the input end of the toroidal worm 1421, fixedly connected to the toroidal worm 1421, and meshes with the output gear of the transmission unit 1416 to drive the toroidal worm 1421 to rotate. Additionally, a shifting part is located near the input gear of the transmission unit 1416 to shift the input gear to mesh with different gears, thereby enabling the selection of gear pairs with different transmission ratios.

[0050] Optionally, the shifting unit includes a sliding shaft 1415, a shift fork 1413, an operating handle 1418, and a second electromagnetic clutch 1414.

[0051] The sliding shaft 1415 is positioned near the input gear of the transmission unit 1416. The shift fork 1413 is slidably mounted on the sliding shaft 1415, and one end of the operating handle 1418 is connected to the shift fork 1413, which can drive the shift fork 1413 to move along the sliding shaft 1415. Additionally, the second electromagnetic clutch 1414 is slidably mounted on the sliding shaft 1415, located on the side of the shift fork 1413 away from the electric drive assembly 130. A push rod is connected between the second electromagnetic clutch 1414 and the shift fork 1413. The shift fork 1413 drives the second electromagnetic clutch 1414 to slide along the sliding shaft 1415, allowing the second electromagnetic clutch 1414 to correspond to different gear positions, selectively engaging gear pairs with different transmission ratios in the transmission chain to achieve gear shifting.

[0052] Optionally, such as Figure 3 and Figure 5 As shown, the winch 100 in this embodiment also includes a second transmission assembly 150, a first traction rope assembly 160, and a second traction rope assembly 170.

[0053] The second transmission assembly 150 is mounted on the base 110 and located at the end of the toroidal worm gear 1421 away from the reversing transmission mechanism 141, and is drively connected to the toroidal worm gear 1421. The first traction rope assembly 160 is mounted on the base 110 and located at the power output end of the second transmission assembly 150, arranged side-by-side with the winch assembly 120. The first traction rope assembly 160 cooperates with the winch assembly 120 and guides and clamps the wire rope. The second transmission assembly 150 controls the wire feeding of the second traction rope assembly 170. The second traction rope assembly 170 is mounted on the base 110 and located on the side of the winch assembly 120 opposite to the first traction rope assembly 160. The second traction rope assembly 170 guides, limits, and fixes the wire rope before it enters the winch assembly 120. Optionally, in this embodiment, a transmission housing is provided on the base frame, a self-locking transmission mechanism 142 is provided in the transmission housing, and the two ends of the toroidal worm gear 1421 are mounted on the transmission housing through bearings. One end of the toroidal worm gear 1421 that is close to the second transmission component 150 passes through the transmission housing and is connected to the second transmission component 150 for transmission.

[0054] Optionally, such as Figure 2 and Figure 9 As shown, in this embodiment, the second transmission assembly 150 includes a second reduction gearbox 151, a second transmission shaft 153, and a third electromagnetic clutch 152.

[0055] Specifically, the second reduction gearbox 151 is located at the end of the toroidal worm gear 1421 away from the reversing speed change mechanism 141. A coupling is provided between the second reduction gearbox 151 and the toroidal worm gear 1421, and the two gearboxes are connected to the toroidal worm gear 1421 through the coupling.

[0056] The second drive shaft 153 is located on the power output side of the second reduction gearbox 151 and is connected to the output shaft of the second reduction gearbox 151. The end of the second drive shaft 153 away from the second reduction gearbox 151 is connected to the first traction rope assembly 160.

[0057] In addition, a third electromagnetic clutch 152 is disposed between the output shaft of the second reduction gearbox 151 and the second transmission shaft 153, and is used to control the rotation of the second transmission shaft 153. It should be noted that the third electromagnetic clutch 152 in this embodiment has the same structure as the first electromagnetic clutch 1411a, and will not be described in detail here.

[0058] Optionally, such as Figure 2 and Figure 10As shown, the first traction rope assembly 160 in this embodiment includes a traction rope bracket 161, a handwheel screw 162, a clamping plate 163, a pressure block 164, a guide shaft 167, and a traction rope roller 166.

[0059] The traction rope bracket 161 is mounted on and fixedly connected to the base 110. The traction rope bracket 161 includes a top plate and a bottom plate. The bottom plate is positioned close to the base 110, and the top plate is positioned away from the base 110, i.e., the top plate is located on the side of the bottom plate opposite to the base 110. A handwheel screw 162 is located at the end of the traction rope bracket 161 away from the base 110, i.e., at the top plate of the traction rope bracket 161, and passes through the top plate of the traction rope bracket 161, perpendicular to the base 110. A clamping plate 163 is located at the end of the handwheel screw 162 close to the base 110 and is fixedly connected to the handwheel screw 162. Additionally, a clamping block 164 is located on the side of the clamping plate 163 opposite to the handwheel screw 162, and a clamping wheel 165 is provided on the side of the clamping block 164 opposite to the clamping plate 163. The clamping wheel 165 is rotatably connected to the clamping block 164. Optionally, the pressure block 164 is, for example, a U-shaped pressure block with its opening facing downwards, and a pressure roller 165 is installed inside the opening.

[0060] Additionally, guide shafts 167 are positioned on both sides of the handwheel screw 162. Both guide shafts 167 are sequentially threaded through the traction rope bracket 161 and the pressure plate 163, and connected to the pressure block 164. A spring 168 is fitted onto the guide shaft 167 located between the pressure block 164 and the pressure plate 163. The elasticity of the spring 168 and the pressure of the handwheel screw 162 effectively prevent rope slippage during lifting and traction. Traction rope rollers 166 are mounted on the base plate of the traction rope bracket 161, located on the side of the pressure block 164 opposite to the handwheel screw 162. Pressure rollers 165 and traction rope rollers 166 are arranged in a one-to-one correspondence. Traction rope rollers 166 are connected to the second gear 155 for transmission. Traction rope rollers 166 are used to drive the wire rope in and, together with the pressure rollers 165, to press the wire rope. Specifically, in this embodiment, the wire rope is tightened between the pressure wheel 165 and the traction roller 166 by rotating the handwheel screw 162.

[0061] Optionally, in this embodiment, there are, for example, three traction rope rollers 166, and correspondingly, three pressure rollers 165. Optionally, a first gear 154 is provided at the end of the second drive shaft 153 away from the second reducer, and the second transmission assembly 150 also includes a second gear 155. The second gear 155 is sleeved and fixed on the rotating shaft of one of the traction rope rollers 166 in the first traction rope assembly 160. The first gear 154 and the second gear 155 mesh and transmit power, realizing the power transmission from the second drive shaft 153 to the traction rope roller 166. In this embodiment, the winch assembly 120 and the first traction rope assembly 160 of the winch 100 adopt the same electric drive assembly 130 for power splitting and synchronous drive. That is, relying on a single DC permanent magnet synchronous motor 131 to output power uniformly, the power path is reasonably allocated through the reversing speed change mechanism 141, the self-locking transmission mechanism 142 and the second transmission assembly 150 to synchronously complete the traction operation of the winch assembly 120 and the regular guidance operation of the first traction rope assembly 160. This achieves coordinated linkage and unified rhythm between traction action and traction rope action, without the need for additional independent power source, simplifying the overall layout and reducing equipment energy consumption and manufacturing costs.

[0062] It should be noted that the second traction rope assembly 170 has the same structure as the first traction rope assembly 160, so it will not be described in detail here.

[0063] In this embodiment, the second traction rope assembly 170 and the first traction rope assembly 160 are located on the front and rear sides of the winch assembly 120, respectively. The front side of the winch assembly 120 is the wire rope inlet end. By setting the second traction rope assembly 170 to press the wire rope, it can cooperate with the winch assembly 120 to fix the wire rope when the rope is being fed, which facilitates construction operations. The first traction rope assembly 160, located on the rear side of the winch assembly 120, tightens the wire rope during wire rope lifting and traction, replacing manual traction.

[0064] Specifically, when the wire rope is used for automatic lifting and traction, the wire rope needs to be pulled at the first traction rope assembly 160. Therefore, the rotation of the tensioning roller is required. At the same time, in order to ensure that the traction speed of the wire rope behind the winch assembly 120 is consistent with the rotation speed of the wire rope in the winch assembly 120, interference will occur if the speeds are inconsistent. Twisting will occur between the rigid connections, causing damage to the components. Therefore, this invention adopts synchronous drive with power splitting in the same drive system, that is, the electric drive assembly 130 is used to synchronously realize the transmission of the winch assembly 120 and the traction of the wire rope by the first traction rope assembly 160.

[0065] Optionally, the winch 100 in this embodiment further includes an electrical control component 180. The electrical control component 180 is mounted on the base 110 and located close to the electric drive component 130. It is electrically connected to the electric drive component 130, the first transmission component 140, and the second transmission component 150, and is used to control the electric drive component 130, the first transmission component 140, the second transmission component 150, and the first traction rope component 160 and to provide power.

[0066] In this embodiment, the electrical control component 180 includes a control system and a power supply system, which are used to realize the automated control of the equipment and provide the electrical energy required by the equipment. The control system includes a measurement and control microcontroller motherboard module, a display and operation module, a remote control module, a motor drive module, a motor parameter detection module, a gear transmission monitoring module, a remote data communication module, and a fault early warning module, etc., to complete the traction control, monitoring, early warning, and management functions of the winch 100. The power supply system is, for example, a combination structure of a battery mounting bracket and a lithium battery.

[0067] In this embodiment, the DC permanent magnet synchronous motor 131 is started and controlled by the electronic control component 180. The DC permanent magnet synchronous motor 131 rotates and drives the commutation and speed change mechanism 141. At the same time, the electronic control component 180 controls the commutation and speed change mechanism 141 to select a preset transmission ratio gear for transmission. Furthermore, the commutation and speed change mechanism 141 drives the toroidal worm gear to rotate. The toroidal worm gear drives the first worm gear 1422 and the second worm gear 1423 to rotate. Thus, the first worm gear 1422 and the second worm gear 1423 drive the first winding drum 121 and the second winding drum 122 to wind rope and pull. When lifting heavy objects, one end of the wire rope is connected to the heavy object, and the other end of the wire rope is connected to the transition pulley block. The rope enters from the second traction rope assembly 170 on the front side of the winch assembly 120, winds the winch assembly 120 around multiple times, and passes out from the second traction rope assembly 170 on the rear side. When the wire rope passes through, the second traction rope assembly 170 is used to press the wire rope tight.

[0068] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A winch, characterized in that, include: A base, a winch assembly, an electric drive assembly, and a first transmission assembly disposed between the winch assembly and the electric drive assembly are sequentially arranged on the base; The winch assembly includes a first winch and a second winch arranged side by side; The first transmission assembly includes: The reversing transmission mechanism is located near the electric drive assembly and is connected to the power output end of the electric drive assembly. The self-locking transmission mechanism is located on the side of the reversing rotation mechanism away from the electric drive assembly. It includes a worm, a first worm wheel, and a second worm wheel. The worm is connected to the reversing rotation mechanism and meshes with the first and second worm wheels. The first worm wheel is coaxially connected to the central shaft of the first winch, and the second worm wheel is coaxially connected to the central shaft of the second winch. The self-locking transmission mechanism is used to drive the winch assembly to rotate and prevent the winch assembly from reversing under load.

2. The winch according to claim 1, characterized in that, The worm is a toroidal worm, located on the side of the first and second worm wheels near the base. The worm, together with the first and second worm wheels, forms a secondary enveloping toroidal meshing pair.

3. The winch according to claim 1, characterized in that, The electric drive assembly includes a DC permanent magnet synchronous motor, which is used to drive the commutation and speed change mechanism.

4. The winch according to claim 1, characterized in that, The reversing speed change mechanism includes: The first gearbox includes multiple sets of chain drive pairs and a first electromagnetic clutch. The first electromagnetic clutch is set on the output shaft of the first electric drive assembly. The first electromagnetic clutch is set one-to-one with the chain drive pairs and is connected to the chain drive pairs for driving control of the rotation and start / stop of the corresponding chain drive pairs. The reversing transmission unit is located on the side of the first gearbox away from the electric drive assembly, and the reversing transmission unit is connected to the first gearbox and the self-locking transmission mechanism.

5. The winch according to claim 4, characterized in that, Chain drive pairs include: The drive sprocket is mounted on the output shaft of the electric drive assembly and connected to the corresponding first electromagnetic clutch. The drive sprocket is rotated by the corresponding first electromagnetic clutch. The driven sprocket is located on the side adjacent to the driving sprocket and the first electromagnetic clutch, and is connected to the driving sprocket for transmission. A chain is fitted onto the driving sprocket and the driven sprocket, and is tensioned by the driving sprocket and the driven sprocket. The chain is used to drive and connect the driving sprocket and the driven sprocket. The first drive shaft passes through the driven sprocket and is connected to the driven sprocket in a driving connection. The output end of the first drive shaft is connected to the reversing drive unit in a driving connection.

6. The winch according to claim 1, characterized in that, The reversing speed change mechanism includes: The transmission unit includes multiple sets of gear pairs with different transmission ratios. The multiple sets of gear pairs are arranged to mesh sequentially along the power transmission direction. The input gear of the transmission unit is sleeved on the output shaft of the electric drive assembly. The transmission gear is sleeved on the input end of the worm and fixedly connected to the worm. It meshes with the output gear of the transmission unit to drive the worm to rotate. The shifting section, located near the input gear of the transmission section, is used to engage the input gear with different gears, thereby enabling the selection of gear pairs with different transmission ratios.

7. The winch according to claim 6, characterized in that, The gear shifting unit includes: A sliding shaft is positioned near the input gear of the transmission unit; The shift fork is slidably mounted on the sliding shaft; The operating handle has one end connected to the shift fork, which can drive the shift fork to move along the sliding shaft; The second electromagnetic clutch is slidably mounted on the sliding shaft and located on the side of the shift fork away from the electric drive assembly. A push rod is connected between the second electromagnetic clutch and the shift fork. The shift fork is used to drive the second electromagnetic clutch to slide along the sliding shaft, so that the second electromagnetic clutch corresponds to different gears and selectively engages gear pairs with different transmission ratios into the transmission chain to achieve gear switching.

8. The winch according to claim 1, characterized in that, Also includes: The second transmission component is mounted on the base and located at the end of the worm gear away from the reversing transmission mechanism, and is connected to the worm gear drive. The first traction rope assembly is mounted on the base and located at the power output end of the second transmission assembly, and is arranged side by side with the winch assembly. The first traction rope assembly is used to cooperate with the winch assembly and to guide and compress the wire rope. The second transmission assembly is used to control the wire inlet of the second traction rope assembly.

9. The winch according to claim 8, characterized in that, The second transmission assembly includes: The second gearbox is located at the end of the worm gear away from the reversing speed change mechanism. A coupling is provided between the second gearbox and the worm gear, and the second gearbox is connected to the worm gear transmission through the coupling. The second drive shaft is located on the power output side of the second gearbox and is connected to the output shaft of the second gearbox. The end of the second drive shaft away from the second gearbox is connected to the first traction rope assembly. The third electromagnetic clutch is located between the output shaft of the second gearbox and the second transmission shaft, and is used to control the rotation of the second transmission shaft.

10. The winch according to claim 9, characterized in that, The first traction rope assembly includes: The tow rope support is mounted on the base. The handwheel screw is located at the end of the traction rope bracket away from the base, and passes through the traction rope bracket, and is set perpendicular to the base; A clamping plate is located at one end of the handwheel screw near the base and is fixedly connected to the handwheel screw. The pressure block is located on the side of the pressure plate away from the handwheel screw, and a pressure wheel is provided on the side of the pressure block away from the pressure plate. The pressure wheel and the pressure block are rotatably connected. Guide shafts are located on both sides of the handwheel screw. Both guide shafts pass through the traction rope bracket and the pressure plate in sequence and are connected to the pressure block. A spring is sleeved on the part of the guide shaft located between the pressure block and the pressure plate. The traction rope roller is located at the bottom of the traction rope bracket, on the side of the pressure block away from the handwheel screw. The pressure wheel and the traction rope roller are arranged in a one-to-one correspondence. The traction rope roller is connected to the second drive shaft. The traction rope roller is used to drive the wire rope to enter and to press the wire rope together with the pressure wheel.

11. The winch according to claim 8, characterized in that, It also includes a second traction rope assembly, which is mounted on the base and located on the side of the drum assembly away from the first traction rope assembly. The second traction rope assembly is used to guide, limit, and fix the wire rope before it enters the drum assembly.

12. The winch according to claim 8, characterized in that, It also includes an electronic control component, which is mounted on the base and located close to the electric drive component. It is electrically connected to the electric drive component, the first transmission component, and the second transmission component, and is used to control the electric drive component, the first transmission component, the second transmission component, and the first traction rope component and to provide power.

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