Crawler motorized winch truck

Abstract

The application discloses a caterpillar motor winch truck, aiming at solving the technical problems of poor adaptability and insufficient reliability of existing winch equipment in complex terrain traction operation. Through the caterpillar structure, stable passing of complex terrains such as mountains and muddy ground is realized, and excessive rolling of land or vegetation is avoided. In addition, due to the small size and small turning radius of the machine body, the operation angle can be flexibly adjusted in narrow areas such as dense forests and corners, and the operation flexibility is improved. In addition, the support mechanism, worm gear reducer self-locking characteristics and overflow valve overload protection are equipped, combined with the automatic wire arrangement mechanism, which can not only prevent skidding and overload during traction, but also realize single independent operation, greatly improve the traction efficiency and safety, adapt to power, forestry, emergency rescue and other multi-scene operations, and effectively make up for the deficiencies of traditional equipment in terrain adaptability, flexibility and safety efficiency.

Description

Technical Field

[0001] This application relates to the field of winch equipment technology, specifically to a tracked motorized winch. Background Technology

[0002] In field traction operations in sectors such as power, communications, and forestry, including high-voltage power line erection, fiber optic cable laying, timber towing, and emergency rescue, motorized winches are often required to perform core tasks such as cable traction and heavy object movement. Currently, the traditional motorized winches widely used in the industry mostly adopt a wheeled walking structure, relying on the contact between the wheels and the ground for movement. While this can meet basic needs in conventional paved road operations, it has significant technical shortcomings in complex terrain environments such as the field.

[0003] From the perspective of terrain adaptability, traditional wheeled winches have a high wheel ground pressure, which can easily cause the wheels to sink and slip when driving on unpaved roads such as mountains, hills, mud, and soft soil. This restricts the working area and creates problems such as being unable to enter or move the work area. Especially in forestry areas and mountainous power construction scenarios, terrain obstacles often prevent them from reaching the designated work point, affecting construction efficiency. In terms of operational flexibility, traditional wheeled winches have a large body size and a large turning radius. In confined spaces such as dense forests, corners, and narrow alleys, it is difficult to adjust the working angle and accurately aim at the towing target. In addition, in emergency rescue scenarios such as agricultural farmland transformation, floods, and earthquakes, traditional wheeled winches may damage farmland vegetation due to excessive compaction of the ground (high ground pressure of the wheel structure), or their large size may prevent them from passing through damaged roads and narrow rescue channels, making it difficult to meet the operational needs in complex terrain.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the background technology of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] In view of at least one of the above technical problems, this application discloses a tracked motorized winch, which aims to solve the technical problems of poor adaptability and insufficient reliability of existing winch equipment when performing traction operations in complex terrain.

[0006] According to one aspect of this disclosure, a tracked motorized winch is provided, comprising a frame, a hydraulic control system, movable tracks disposed on both sides of the frame, a support mechanism fixed relative to the frame for corresponding ground support during winch operation, a double-drum winch fixed to the top of the frame and comprising a winch hydraulic motor and a take-up hydraulic motor, and a wire laying mechanism. The hydraulic control system includes a main control pipeline connected to a hydraulic power source, a movement control pipeline, a support control pipeline, a winch control pipeline, and a wire laying control pipeline connected in parallel downstream of the main control pipeline via a first directional control valve and respectively used to drive the movable tracks, the support mechanism, the double-drum winch, and the wire laying mechanism; a second directional control valve and a balance valve are sequentially connected in series in the winch control pipeline, and the winch hydraulic motor is provided with a multi-plate brake; a pressure reducing valve, a throttle valve, and a third directional control valve are sequentially connected in series in the wire laying control pipeline, and an overflow valve is also provided between the take-up hydraulic motor and the third directional valve.

[0007] In some embodiments of this disclosure, the mobile track includes a drive wheel set and a driven wheel set disposed on both sides of the bottom of the frame, a transmission track connected between the drive wheel set and the driven wheel set, and a mobile hydraulic motor for driving the rotation of the central shaft of the drive wheel set.

[0008] In some embodiments of this disclosure, the support mechanism includes a support rod with one end hinged to the frame and the other end fixed to a support plate, and a hydraulic cylinder correspondingly hinged between the frame and the support rod for driving the support rod to rotate.

[0009] In some embodiments of this disclosure, a fourth directional control valve is connected in series in the movement control pipeline; and a fifth directional control valve is connected in series in the support control pipeline.

[0010] In some embodiments of this disclosure, the double-drum winch includes a winch drum fixed to the frame by a corresponding bracket, a synchronization box and a worm gear reducer sequentially connected to the winch drum for transmission, and the drive shaft of the worm gear reducer is correspondingly connected to the winch hydraulic motor for transmission; the cable laying mechanism includes a reciprocating screw cable laying device arranged along the transmission direction of the winch drum.

[0011] In some embodiments of this disclosure, the reciprocating screw cable guide includes a take-up reel rotatably mounted on a frame, a screw mounted above the take-up reel and having a helical reversing groove, a cable guide slider threadedly connected to the helical reversing groove for moving along the screw, a second sprocket chain drivingly connected between the end of the screw and the take-up reel, and a first sprocket chain drivingly connected between the output shaft of the take-up hydraulic motor and the shaft of the take-up reel.

[0012] In some embodiments of this disclosure, the first directional control valve is a two-position three-way directional valve, with the moving control pipeline and the support control pipeline connected in parallel at one working port of the two-position three-way directional valve, and the winch control pipeline and the wiring control pipeline connected in parallel at the other working port.

[0013] In some embodiments of this disclosure, the frame is further provided with a hydraulic station that is connected to the first directional control valve, the second directional control valve, the third directional control valve, the fourth directional control valve, the fifth directional control valve, the pressure reducing valve, and the relief valve in the hydraulic control system.

[0014] In some embodiments of this disclosure, the first directional control valve, the second directional control valve, the third directional control valve, the fourth directional control valve, the pressure reducing valve, the relief valve, the balance valve, and the throttle valve in the hydraulic control system are all solenoid valves and are electrically connected to the electrical control box located on the frame. The frame is also equipped with a battery that is electrically connected to the electrical control box.

[0015] One or more technical solutions provided in the embodiments of this application have at least one of the following technical effects or advantages: 1. The technical solution of this application enhances the overall grip of the winch vehicle by using a mobile track and support mechanism, avoiding traction loss caused by slippage, and adapting to the traction needs of various scenarios in complex terrain; at the same time, in conjunction with the drive control of the hydraulic control system, the power interlock between the traveling support and the winch cable is realized by controlling the reversing valve, effectively preventing safety risks caused by misoperation.

[0016] 2. Through the winch control pipeline equipped with the double drum winch, a counterflow valve, a three-position four-way reversing valve, a hydraulic motor, and a multi-plate brake are used to work together to achieve instant braking when the machine stops. Combined with the self-locking characteristics of the worm gear reducer, a double safety guarantee is formed, which reduces the brake pressure and accurately prevents overload, thereby improving traction reliability.

[0017] 3. Through the cable laying control pipeline equipped with the cable laying mechanism, the pressure and flow of the main oil circuit of the winch are kept stable by using throttle valves and pressure reducing valves. When the rope is wound up, it rotates synchronously with the winch and provides tension to the wire rope to ensure friction. When the rope is released, the back pressure of the unloading valve and the overflow valve forms a resistance torque. Stable "passive rope release" can be achieved without the need for a hydraulic pump, completely avoiding the hidden dangers of "free rope release" and taking into account both simplicity and reliability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a tracked motorized winch in one embodiment of this application.

[0019] Figure 2 This is a left view of a tracked motorized winch vehicle according to an embodiment of this application.

[0020] Figure 3 This is a schematic diagram of the hydraulic control system of a tracked motorized winch in one embodiment of this application.

[0021] In the above diagrams, 1 represents the frame, 2 the diesel engine, 3 the hydraulic pump, 4 the hydraulic station, 5 the drive wheel assembly, 6 the driven wheel assembly, 7 the transmission track, 8 the moving hydraulic motor, 9 the support rod, 10 the support plate, 11 the hydraulic cylinder, 12 the winch drum, 13 the synchronizer box, 14 the worm gear reducer, 15 the winch hydraulic motor, 16 the take-up hydraulic motor, 17 the take-up reel, 18 the lead screw, and 19 the screw converter. 20 is a cable slider, 21 is a drive unit overflow valve, 22 is an oil pressure gauge, 23 is a three-position six-way directional valve, 24 is a single-position three-position six-way directional valve, 25 is a three-position four-way directional valve, 26 is a balance valve, 27 is a multi-disc brake, 28 is a throttle valve, 29 is a pressure reducing valve, 30 is a two-position four-way unloading valve, 31 is an overflow valve, 32 is a two-position three-way directional valve, 33 is an electrical control box, 34 is a battery, and 35 is a pressure relay. Detailed Implementation

[0022] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "vertical," "horizontal," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "connection" and "linkage" in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0023] Unless otherwise specified, the unit modules, components, structures, mechanisms, or sensors involved in the following embodiments are all commercially available products.

[0024] To better understand the technical solution of this application, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] To address the technical problems of poor adaptability and insufficient reliability of existing winch equipment in complex terrain traction operations, this embodiment discloses a tracked motorized winch, such as... Figure 1 As shown, it includes a frame 1, a moving track, a support mechanism, a twin-drum winch, a cable laying mechanism, and a hydraulic control system. The frame 1 serves as the mounting carrier for the other mechanisms; its compact size and integrated functionality allow it to operate in narrow or damaged roads.

[0026] To ensure the safe operation of the winch in high-risk scenarios such as heavy load traction and steep / muddy slope operations, and to provide an effective traction power source while allowing for independent operation by a single person, a hydraulic control system is fixed at frame 1 in this embodiment. For example... Figure 1 , 3 As shown, the hydraulic control system includes a hydraulic power source that drives various mechanisms on the winch car through hydraulic pipelines. Preferably, the hydraulic power source consists of a diesel engine 2 and a hydraulic pump 3, serving as the power source for the entire hydraulic control system. Specifically, the hydraulic pipelines include a main control pipeline connected to the hydraulic power source, a movement control pipeline connected in parallel downstream of the main control pipeline via a first directional control valve, and connected to the moving track, support mechanism, double-drum winch, and wiring mechanism, respectively. Preferably, the first directional control valve is a two-position three-way directional valve 32. Downstream of one working port of the two-position three-way directional valve 32 are parallel-connected movement control lines and support control lines, and downstream of the other working port are parallel-connected winch control lines and cable routing control lines. This allows the two-position three-way directional valve 32 to control the power switching of the walking support and winch cable winding, preventing simultaneous operation and effectively preventing accidents caused by operational errors. It also reduces the power source and avoids resource waste. Simultaneously, a drive unit relief valve 21 and an oil pressure gauge 22 are also equipped on the main control line, located between the two-position three-way directional valve 32 and the hydraulic power source, facilitating corresponding control of the hydraulic power source. Furthermore, a hydraulic station 4 is provided at the frame 1, connected to the first directional control valve, second directional control valve, third directional control valve, fourth directional control valve, fifth directional control valve, pressure reducing valve 29, drive unit relief valve 21, and relief valve 31 within the hydraulic control system, ensuring stable operation of the hydraulic system.

[0027] Considering that ordinary wheeled equipment is difficult to access in complex terrain conditions and is prone to slippage and insufficient traction, this embodiment aims to improve traction transmission efficiency and avoid traction loss due to slippage. Figure 1 , 2 As shown, a movable track and support mechanism are provided at the bottom of the frame 1. The movable track includes a drive wheel set 5 and a driven wheel set 6 rotatably disposed on both sides of the bottom of the frame, a transmission track 7 drivingly connected between the drive wheel set 5 and the driven wheel set 6, and a movable hydraulic motor 8 correspondingly fixed on the rotating shaft of the drive wheel set 5. Additionally, in this embodiment, as... Figure 1 As shown, the support mechanism includes a support rod 9 with one end hinged to the frame 1 and the other end fixed to a support plate 10, and a hydraulic cylinder 11 with one end hinged to the frame 1 and located above the support rod 9 and the other end correspondingly hinged to the support plate 10. The extension and retraction of the hydraulic cylinder 11 causes the support plate 10 to be inserted into the ground as the support rod 9 rotates, thereby enhancing the winch's grip.

[0028] Furthermore, a fourth directional control valve is connected in series in the movement control pipeline, and a fifth directional control valve is connected in series in the support control pipeline. Preferably, the fourth directional control valve is two series-connected two-way three-position six-way directional valves 23. The downstream working ports of the two series-connected two-way three-position six-way directional valves 23 are respectively connected to the two moving hydraulic motors 8 of the moving track. It can independently adjust the speed and direction of the transmission track on both sides of the bottom of the frame, realizing the forward, backward and turning operations of the winch, and can meet the requirements of a very small turning radius. It can flexibly adjust the working angle in narrow spaces such as dense forests and corners. The fifth directional control valve is a single three-position four-way directional valve 24, so that the support control pipeline is located downstream of the fourth directional control valve and connected to the downstream working port of one of the two-way three-position six-way directional valves 23. After the winch stops, the extension of the hydraulic cylinder 11 can be controlled by the single three-position four-way directional valve 24. Combined with the stable pressure output of the hydraulic control system, the stability of the winch is improved, and slippage and overturning are avoided when operating on soft ground (farmland, muddy ground) or steep slopes.

[0029] To ensure that the winch car has a compact body while possessing strong and stable traction, in this embodiment, such as Figure 1 As shown, a double-drum winch is fixed relative to the frame 1. It includes a winch drum 12 fixed to the frame via a corresponding bracket, a synchronization box 13 and a worm gear reducer 14 sequentially connected to the winch drum 12, and a winch hydraulic motor 15 driving the worm gear reducer 14. The winch hydraulic motor 15 outputs power and, in conjunction with the worm gear reducer 14, transmits torque, providing core traction force for cable pulling and heavy object dragging, while ensuring consistent double-drum transmission through the synchronization box 13. Meanwhile, as... Figure 3 As shown, in the winch control pipeline, a second direction control valve and a balance valve 26 are connected in series between the first direction control valve and the winch hydraulic motor 15. This system controls the system pressure and prevents equipment overload. Preferably, the second direction control valve is a three-position four-way directional valve 25, and the winch hydraulic motor 15 is also equipped with a multi-plate brake 27. This allows the multi-plate brake 27 to release when the winch hydraulic motor 15 rotates and to engage when the winch hydraulic motor 15 stops. Combined with the self-locking characteristic of the worm gear reducer 14, this provides additional self-locking force when the double-drum winch pulls heavy objects, reducing the brake load and forming multiple safety protections. The "flexible" characteristic of hydraulic transmission buffers the traction impact, ensuring a smooth traction process and avoiding equipment jerking or cable breakage caused by rigid transmission.

[0030] To achieve automatic cable or wire rope winding and ensure synchronization between winding and unwinding and the winch, in this embodiment, as follows: Figure 1 , 2As shown, a cable guiding mechanism is fixed at frame 1 corresponding to the double-drum winch. This mechanism includes a reciprocating screw cable guide arranged along the conveying direction of the winch drums, and a take-up hydraulic motor 16 fixed at frame 1 and connected to the reciprocating screw cable guide via a first sprocket chain. Further, the reciprocating screw cable guide includes a take-up wheel 17 rotatably mounted at frame 1, a screw 18 mounted above the take-up wheel 17 and provided with a helical reversing groove 19, a cable guiding slider 20 threadedly connected to the helical reversing groove 19 for movement along the screw 18, a second sprocket chain drivingly connected between the end of the screw 18 and the take-up wheel 17, and a first sprocket chain drivingly connected between the output shaft of the take-up hydraulic motor 16 and the rotating shaft of the take-up wheel 17. The take-up hydraulic motor 16 drives the take-up wheel 17 to rotate via the first sprocket chain, and the take-up wheel 17 drives the screw 18, causing the cable or wire rope to be orderly wound onto the take-up wheel 17 via the cable guiding slider. Specifically, the cable guide slider 20 reciprocates on the lead screw via the reversing sections at both ends of the helical reversing groove 19. When the crescent-shaped part within the cable guide slider 20 moves along the helical reversing groove 19 to the end of the lead screw, its direction of movement is automatically changed by the guidance of the reversing section. Furthermore, when the take-up reel 17 synchronously drives the lead screw 18 to rotate via the second sprocket chain, the number of sprocket teeth and the lead screw pitch of the second sprocket chain match the moving speed of the cable guide slider. The cable guide slider and the take-up reel perform synchronous linear reciprocating motion, enabling the orderly arrangement of cables or wire ropes. Additionally, as... Figure 3As shown, the cable management control line includes a pressure reducing valve 29, a throttle valve 28, and a third directional control valve connected in series between the first directional control valve and the take-up hydraulic motor 16. Preferably, the third directional control valve is a two-position four-way unloading valve 30, and an overflow valve 31 is also provided between the take-up hydraulic motor 16 and the two-position four-way unloading valve 30. The oil pressure / flow rate distributed by the throttle valve and pressure reducing valve ensures the power of the main oil circuit of the double drum winch while meeting the low load requirements of the reciprocating screw cable guide, so that the take-up wheel rotates synchronously with the double drum winch during take-up, and a stable resistance is formed by the back pressure of the overflow valve during release. Specifically, during take-up, the pressure relay 35 is activated and the two-position four-way unloading valve 30 is in the conducting state. The take-up hydraulic motor 16 rotates and drives the screw 18 to rotate synchronously with the winch through the sprocket and chain. Excess flow in the cable management control line is discharged from the overflow valve, achieving synchronous take-up while providing a certain tension to the cable to ensure the friction of the winch. When the winch stops and releases the line, the pressure relay 35 activates, and the two-position four-way unloading valve is in the unloading state. The hydraulic oil in the line control pipeline returns directly to the oil tank, and the two oil ports of the take-up hydraulic motor are closed. The overflow valve generates back pressure, forming a resistance torque. When the winch releases the line, the cable pulls the take-up reel, and the take-up hydraulic motor 16 is passively reversed, converting the resistance torque into rope tension. The entire process does not require the hydraulic pump to provide power (the pump is in the unloading state). Stable rope tension can be achieved solely through the back pressure control of the overflow valve and the passive rotation of the take-up hydraulic motor. This satisfies the requirements of "passive rope release" while avoiding the safety hazards of "free rope release," balancing simplicity and reliability.

[0031] In another embodiment, such as Figure 1 As shown, in the hydraulic control system, the first directional control valve, the second directional control valve, the third directional control valve, the fourth directional control valve, the fifth directional control valve, the pressure reducing valve 29, the drive unit relief valve 21, the relief valve 31, the balance valve 26, and the throttle valve 28 are all solenoid valves and are electrically connected to the electrical control box 33 located on the frame. The frame is also equipped with a battery 34 that is electrically connected to the electrical control box 33.

[0032] Although some preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0033] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of its inventive concept. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A tracked motorized winch, characterized in that, The system includes a frame, a hydraulic control system, movable tracks on both sides of the frame, a support mechanism fixed relative to the frame for supporting the ground during winch operation, a double-drum winch fixed to the top of the frame and including a winch hydraulic motor and a take-up hydraulic motor, and a wire laying mechanism. The hydraulic control system includes a main control pipeline connected to a hydraulic power source, a movement control pipeline connected downstream of the main control pipeline via a first directional control valve, and a support control pipeline, a winch control pipeline, and a wire laying control pipeline, respectively used to drive the movable tracks, support mechanism, double-drum winch, and wire laying mechanism. A second directional control valve and a balance valve are connected in series in the winch control pipeline, and the winch hydraulic motor is equipped with a multi-plate brake. A pressure reducing valve, a throttle valve, and a third directional control valve are connected in series in the wire laying control pipeline, and an overflow valve is also provided between the take-up hydraulic motor and the third directional control valve.

2. The tracked motorized winch according to claim 1, characterized in that, The mobile track includes a drive wheel set and a driven wheel set located on both sides of the bottom of the frame, a transmission track connected between the drive wheel set and the driven wheel set, and a mobile hydraulic motor for driving the rotation of the central shaft of the drive wheel set.

3. The tracked motorized winch according to claim 1 or 2, characterized in that, The support mechanism includes a support rod with one end hinged to the frame and the other end fixed to a support plate, and a hydraulic cylinder correspondingly hinged between the frame and the support rod for driving the support rod to rotate.

4. The tracked motorized winch according to claim 3, characterized in that, A fourth directional control valve is connected in series in the movement control pipeline; a fifth directional control valve is connected in series in the support control pipeline.

5. The tracked motorized winch according to claim 1, characterized in that, The double-drum winch includes a winch drum fixed to the frame by a corresponding bracket, a synchronization box and a worm gear reducer that are sequentially connected to the winch drum for transmission. The drive shaft of the worm gear reducer is correspondingly connected to the winch hydraulic motor for transmission. The cable laying mechanism includes a reciprocating screw cable laying device arranged along the transmission direction of the winch drum.

6. The tracked motorized winch according to claim 5, characterized in that, The reciprocating screw cable guide includes a take-up reel rotatably mounted on the frame, a screw mounted above the take-up reel and having a helical reversing groove, a cable guide slider threadedly connected to the helical reversing groove for moving along the screw, a second sprocket chain drivingly connected between the end of the screw and the take-up reel, and a first sprocket chain drivingly connected between the output shaft of the take-up hydraulic motor and the shaft of the take-up reel.

7. The tracked motorized winch according to claim 1, characterized in that, The first directional control valve is a two-position three-way reversing valve. One working port of the two-position three-way reversing valve is connected to the parallel moving control pipeline and the support control pipeline, and the other working port is connected to the parallel winch control pipeline and the wiring control pipeline.

8. The tracked motorized winch according to claim 1, characterized in that, The frame is also equipped with a hydraulic station that is connected to the first directional control valve, the second directional control valve, the third directional control valve, the fourth directional control valve, the fifth directional control valve, the pressure reducing valve, and the relief valve in the hydraulic control system.

9. The tracked motorized winch according to claim 8, characterized in that, In the hydraulic control system, the first directional control valve, the second directional control valve, the third directional control valve, the fourth directional control valve, the pressure reducing valve, the relief valve, the balance valve, and the throttle valve are all solenoid valves and are electrically connected to the electrical control box located on the frame. The frame is also equipped with a battery that is electrically connected to the electrical control box.

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