Hydraulic winch with built-in planetary reducer

Abstract

The utility model relates to the technical field of hydraulic winches, in particular to a hydraulic winch with a built-in planetary reducer, which comprises a left side plate and a right side plate, a winding drum body is mounted between the left side plate and the right side plate, and a built-in speed reduction and change mechanism is mounted at the left end of a built-in through cavity of the winding drum body in a matched manner. A brake unit is installed at the right end of the built-in through cavity of the winding drum body in a matched mode, the right end of the brake unit is used for being connected with an external hydraulic motor, and the left end of the built-in speed reduction and change mechanism is fixedly installed on the left side plate. The outer side wall of the left side of the built-in speed reduction and change mechanism abuts against and is matched with the inner wall of the left end of the built-in through cavity through a left side deep groove bearing movably connected to the built-in speed reduction and change mechanism in a sleeving mode. The structure with the built-in planetary reducer is adopted, so that the external size of the whole winch can be effectively reduced, the large-torque lifting requirement in a narrow space can be effectively met during lifting operation, the overall structure is compact, and the external occupied space is small.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic winches, in particular to a hydraulic winch with a built-in planetary reducer. Background Art

[0002] Hydraulic winch is a material lifting or towing equipment widely used in marine engineering, construction, water conservancy engineering, forestry, mining, docks and other fields.

[0003] It mainly works by using structural components such as hydraulic motor (low-speed or high-speed motor), hydraulic normally closed multi-disc brake, planetary gear box, clutch (optional), drum, support shaft, frame, rope presser (optional), etc.

[0004] In addition, hydraulic winches can also be classified according to their rated load. Generally speaking, winches with a rated load of more than 10T to 5000T will be designed as hydraulic winches.

[0005] At present, there are many types of hydraulic winches on the market, and their structures have also been innovated with the changes in the use environment. For example, a high-speed and high-torque hydraulic winch is disclosed in the patent document with patent publication number CN207361657U, whose main structure includes a winch drum and a winch fixing frame. The winch drum is a hollow cylindrical frame, and two reducers are symmetrically installed in the inner cavity of the winch drum. The front end of the reducer is provided with a first flange and a second flange in sequence, the first flange is fixed on the side wall of the winch drum, and the second flange connected to the first flange is fixed on the winch fixing frame. The two reducers are respectively connected to two hydraulic motors.

[0006] It can be seen that the main method is to place the reducer outside the inner side of the hydraulic motor, and to configure reducers at both ends to increase the torque. Although this structure can increase the torque, configuring reducers at both ends will increase the size of the entire winch, which is not suitable for narrow or compact space working conditions. In addition, each reducer is also placed externally at the outer end of the drum, which also causes each reducer to occupy the space outside the drum, further causing the size of the entire winch to be unable to be compact and small.

[0007] To this end, the utility model improves and designs the hydraulic winch with high torque requirements in existing narrow working conditions, and specially proposes a new compact hydraulic winch that can realize built-in single-sided reducer and meet high torque lifting requirements, so as to better solve the problems existing in the prior art. Utility Model Content

[0008] The utility model solves one of the above technical problems, and the technical solution adopted is: a hydraulic winch with a built-in planetary reducer comprises a left side plate and a right side plate, a drum body is installed between the left side plate and the right side plate, the bottoms of the left side plate and the right side plate are fixedly installed on the top of a base, a built-in speed reduction and transmission mechanism is installed in cooperation with the left end of the built-in through cavity of the drum body, and a brake unit is installed in cooperation with the right end of the built-in through cavity of the drum body, and the right end of the brake unit is used to be connected to an external hydraulic motor, and the built-in speed reduction and transmission mechanism is installed in cooperation with the right end of the built-in through cavity of the drum body. The left end of the speed change mechanism is fixedly mounted on the left side plate, the left outer side wall of the built-in reduction speed change mechanism is tightly fitted with the left inner wall of the built-in through cavity through the left deep groove bearing movably sleeved thereon, the output end of the built-in reduction speed change mechanism is fixedly connected to the reel body, the right end of the brake unit is fixedly mounted at the mounting hole of the right side plate and the end portion extends to the right side of the right side plate, the middle outer side wall of the brake unit is movably inserted in a right deep groove bearing, and the outer side wall of the right deep groove bearing is fixed on the inner side wall of the built-in through cavity.

[0009] In any of the above schemes, preferably, a reinforcing linkage component is provided in the built-in through cavity between the built-in speed reduction transmission mechanism and the brake unit.

[0010] In any of the above schemes, it is preferred that the reinforced linkage component includes a high-strength alloy sun shaft coaxially arranged inside the built-in through cavity, the left end of the high-strength alloy sun shaft is connected to the power input end of the built-in deceleration and transmission mechanism, the right end of the high-strength alloy sun shaft is connected to the power output end of the brake unit, and a linkage reinforcement plate coaxially arranged therewith is integrally formed and fixed on the middle outer wall of the high-strength alloy sun shaft, the outer wall of the linkage reinforcement plate is provided with a circle of chamfered curved surface, and the outer wall of the linkage reinforcement plate is movably pressed against the inner wall of the built-in through cavity.

[0011] In any of the above schemes, it is preferred that the built-in speed reduction and transmission mechanism includes a plurality of planetary gears evenly distributed around the sun gear at the end of the high-strength alloy sun shaft and meshing with each other, the center hole of each planetary gear is movably sleeved on the outer wall of the planetary gear shaft at the corresponding position, the left end of each planetary gear shaft is movably inserted into the corresponding mounting hole of the planetary carrier at the corresponding position, the planetary carrier is fixedly connected to the left side plate by bolts, a fixed gear ring is sleeved on the periphery of each planetary gear, the inner ring teeth of the fixed gear ring are respectively meshed with the gear teeth of each planetary gear, the outer wall of the fixed gear ring is welded and fixedly connected to the reel body, a gear ring retaining ring coaxially arranged therewith is fixedly installed on the right end face of the fixed gear ring, and the left deep groove bearing is movably sleeved on the outer side wall of the left side of the planetary carrier.

[0012] In any of the above schemes, preferably, a built-in space is provided between the brake unit and the built-in speed reduction mechanism, and the axial length of the built-in through cavity is three times the axial length of the built-in space.

[0013] In any of the above schemes, it is preferred that the brake unit includes a brake housing, the right end of the brake housing is fixedly mounted in the mounting hole of the right side plate, the left end outer wall of the brake housing is cooperatively inserted in the axial hole of the right deep groove bearing, a motor connecting disk is fixedly mounted on the right end of the brake housing on the outer side of the right side plate, the motor connecting disk is used to install a hydraulic motor, a brake piston is installed in the piston cavity on the right side of the cavity of the brake housing, a coupling sleeve is coaxially mounted in the cavity of the brake housing on the left side of the brake piston, the right end of the coupling sleeve is used to connect to the output shaft of the hydraulic motor, a friction plate assembly is cooperatively arranged on the outer wall of the coupling sleeve, and a friction plate baffle is fixedly mounted on the left end surface of the brake housing on the left side of the friction plate assembly.

[0014] In any of the above schemes, it is preferred that the friction plate assembly includes a plurality of static friction plates evenly spaced and fixedly arranged along the axial direction of the high-strength alloy sun shaft, and a dynamic friction plate is arranged between two adjacent static friction plates. When in the braking state, the dynamic friction plate and the static friction plate are frictionally tightly fitted together, and a friction plate adjustment plate coaxially arranged therewith is installed on the right side of the dynamic friction plate on the right side.

[0015] In any of the above schemes, it is preferred that the upper and lower parts of the high-strength alloy sun shaft on the left side of the reinforced linkage component are symmetrically provided with cast cylinder barrels that are integrally formed and fixed thereto, and the inner sides of the plunger cavities of the two cast cylinder barrels are respectively connected to the diverter oil supply channel arranged at the left center of the high-strength alloy sun shaft, and the left end of the diverter oil supply channel is sealed and connected to the pressure oil port arranged at the center of the planetary carrier, and the pressure oil port is used to connect to the external oil supply pipeline, and a radial piston is sealed and inserted in the plunger cavity of each cast cylinder barrel, and the outer end of each radial piston abuts against the inner wall of the built-in through cavity through an auxiliary brake friction block.

[0016] In any of the above schemes, it is preferred that a lubricating oil channel is provided at the right end of the brake housing, the oil outlet end of the lubricating oil channel is connected to the inside of the piston chamber, and the left end of the lubricating oil channel is provided with an oil port seal connected to the motor connecting plate.

[0017] In any of the above solutions, preferably, two concentrically arranged built-in annular weight-reducing cavities are provided inside the linkage reinforcement plate.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] 1. The structure of the built-in planetary reducer adopted in the utility model can effectively reduce the external dimensions of the entire winch, and can effectively meet the large torque lifting requirements in a small space during lifting operations. The overall structure is compact and the external space occupied is small.

[0020] 2. When the high-strength alloy sun shaft follows the operation of the hydraulic winch in the utility model, the power at the right end can be transmitted to the built-in speed reduction and transmission mechanism through the high-strength alloy sun shaft, and the speed of the entire drum body can be controlled by the deceleration of the built-in speed reduction and transmission mechanism. At the same time, when the high-strength alloy sun shaft is running, radial support can be achieved by strengthening the linkage components, effectively ensuring its rigidity during operation.

[0021] 3. In addition, the two radial pistons arranged on the left side of the reinforced linkage component can rely on the auxiliary brake friction block to achieve tightness against the inside of the built-in through cavity when the oil is supplied with high pressure, so as to achieve the purpose of assisting the brake unit to achieve safe braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the specific implementation of the utility model, the following will briefly introduce the drawings required for the specific implementation. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, each element or component is not necessarily drawn according to the actual scale.

[0023] Figure 1 It is a cross-sectional structural schematic diagram of the utility model.

[0024] In the figure, 1, right side plate; 2, straight-through pressure injection oil cup; 3, left deep groove bearing; 4, planetary carrier; 5, fixed ring gear; 6, planetary gear; 7, diverter oil supply channel; 9, planetary gear shaft; 10, ring gear retaining ring; 11, radial piston; 12, friction plate baffle; 13, static friction plate; 14, dynamic friction plate; 15, friction plate adjustment plate; 16, brake housing; 17, left side plate; 18, piston chamber; 19, brake piston; 20, motor connecting plate; 21, disc spring; 22, coupling sleeve; 23, auxiliary brake friction block; 24, right deep groove bearing; 25, base; 26, linkage reinforcement plate; 27, built-in annular weight reduction chamber; 28, pressure oil port; 29, cast cylinder; 30, high-strength alloy sun shaft; 31, lubrication oil channel; 32, reel body. DETAILED DESCRIPTION

[0025] The following is a detailed description of the embodiments of the technical solution of the utility model in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the scope of protection of the utility model. Figure 1 as shown in .

[0026] Embodiment: A hydraulic winch with a built-in planetary reducer comprises a left plate and a right plate, a drum body is installed between the left plate and the right plate, the bottoms of the left plate and the right plate are fixedly installed on the top of a base, the left end of the built-in through cavity of the drum body is cooperated with the built-in speed reduction and transmission mechanism, and the right end of the built-in through cavity of the drum body is cooperated with the brake unit, the right end of the brake unit is used to connect with an external hydraulic motor, the left end of the built-in speed reduction and transmission mechanism is fixedly installed on the left plate, the left outer side wall of the built-in speed reduction and transmission mechanism is tightly matched with the left end inner wall of the built-in through cavity through the left deep groove bearing movably sleeved thereon, the output end of the built-in speed reduction and transmission mechanism is fixedly connected to the drum body, the right end of the brake unit is fixedly installed at the mounting hole of the right plate and the end extends to the right side of the right plate, the middle outer side wall of the brake unit is movably inserted in a right deep groove bearing, and the outer side wall of the right deep groove bearing is fixed on the inner side wall of the built-in through cavity. It should be noted that the hydraulic winch with a built-in planetary reducer in the utility model adopts a compact structural layout with a built-in speed reduction and transmission mechanism arranged inside the left end and a brake unit arranged inside the right end. This can effectively ensure the flexibility of movement when lifting in a narrow and open environment, reduce the probability of the problem of restricted operating movement in a small space, and improve the safety of equipment operation.

[0027] In addition, when working, the externally installed hydraulic motor can be used as input power to drive the brake unit connected to it to brake as needed.

[0028] When braking is required, external oil is supplied to drive the piston inside the brake unit to move and push the corresponding dynamic friction plate against the static friction plate to achieve friction plate braking; when normal operation is required, the brake unit is in an idle state, and relies on transmission power to transfer power to the high-strength alloy sun shaft to achieve continued power transmission. When the high-strength alloy sun shaft is running, it will drive the corresponding built-in speed reduction mechanism to achieve planetary speed reduction. After deceleration, it will output through the fixed gear ring and drive the drum body fixed to it to rotate with it, thereby achieving the purpose of deceleration. The hydraulic motor adopts a large torque product structure, which can effectively ensure the high horsepower output of the entire hydraulic winch and improve its lifting capacity.

[0029] In any of the above schemes, preferably, a reinforcing linkage component is provided in the built-in through cavity between the built-in speed reduction transmission mechanism and the brake unit.

[0030] In any of the above schemes, it is preferred that the reinforced linkage component includes a high-strength alloy sun shaft coaxially arranged inside the built-in through cavity, the left end of the high-strength alloy sun shaft is connected to the power input end of the built-in deceleration and transmission mechanism, the right end of the high-strength alloy sun shaft is connected to the power output end of the brake unit, and a linkage reinforcement plate coaxially arranged therewith is integrally formed and fixed on the middle outer wall of the high-strength alloy sun shaft, the outer wall of the linkage reinforcement plate is provided with a circle of chamfered curved surface, and the outer wall of the linkage reinforcement plate is movably pressed against the inner wall of the built-in through cavity.

[0031] It should be noted that the strengthened linkage component is a component for transmitting and conveying power. At the same time, it relies on the support and rotation of the linkage reinforcement plate to ensure the stability of the high-strength alloy sun shaft during rotation, reduce the probability of axial runout, and improve the stability of the high-strength alloy sun shaft.

[0032] In any of the above schemes, it is preferred that the built-in speed reduction and transmission mechanism includes a plurality of planetary gears evenly distributed around the sun gear at the end of the high-strength alloy sun shaft and meshing with each other, the center hole of each planetary gear is movably sleeved on the outer wall of the planetary gear shaft at the corresponding position, the left end of each planetary gear shaft is movably inserted into the corresponding mounting hole of the planetary carrier at the corresponding position, the planetary carrier is fixedly connected to the left side plate by bolts, a fixed gear ring is sleeved on the periphery of each planetary gear, the inner ring teeth of the fixed gear ring are respectively meshed with the gear teeth of each planetary gear, the outer wall of the fixed gear ring is welded and fixedly connected to the reel body, a gear ring retaining ring coaxially arranged therewith is fixedly installed on the right end face of the fixed gear ring, and the left deep groove bearing is movably sleeved on the outer side wall of the left side of the planetary carrier.

[0033] It should be noted that the built-in speed reduction and transmission mechanism mainly plays a role of deceleration when performing transmission work. The speed ratio of the sun gear and the planetary gear is reasonably controlled during design (the specific parameters are not limited and are common knowledge of technicians in this field). When the high-strength alloy sun shaft receives power from the right end, it will drive the sun gear fixed axis at its end to rotate. During the rotation of the sun gear fixed axis, it will drive the planetary gears around it that are meshed with it to rotate, while keeping the planetary carrier fixed. The rotation of each planetary gear will drive the fixed gear ring meshed with it to rotate. During the rotation of the fixed gear ring, it will also drive the drum body fixed to it to rotate, thereby realizing the rope collection or rope release of the wire rope wrapped on the outer wall of the drum body, thereby playing a role of lifting and lowering.

[0034] In any of the above schemes, preferably, a built-in space is provided between the brake unit and the built-in speed reduction mechanism, and the axial length of the built-in through cavity is three times the axial length of the built-in space.

[0035] It should be noted that: providing sufficient built-in space in the middle of the built-in through cavity can facilitate the matching installation of related components therein, and effectively ensure the adequacy of the internal installation space.

[0036] In any of the above schemes, it is preferred that the brake unit includes a brake housing, the right end of the brake housing is fixedly installed in the mounting hole of the right side plate, the left end outer wall of the brake housing is cooperated and inserted in the axial hole of the right deep groove bearing, a motor connecting disk is fixedly installed on the right end of the brake housing on the outer side of the right side plate, the motor connecting disk is used to install a hydraulic motor, a brake piston is installed in the piston cavity on the right side of the cavity of the brake housing, a matching disc spring is arranged on the right side of the brake piston, the right side of the disc spring is pressed against the left end step surface of the motor connecting disk, a coupling sleeve is coaxially installed in the cavity of the brake housing on the left side of the brake piston, the right end of the coupling sleeve is used to connect to the output shaft of the hydraulic motor, a friction plate assembly is cooperated on the outer wall of the coupling sleeve, and a friction plate baffle is fixedly installed on the left end surface of the brake housing on the left side of the friction plate assembly.

[0037] It should be noted that: the brake unit mainly adopts the existing friction plate braking method when working. When working, it relies on the hydraulic motor installed on the motor connecting plate to provide input power. When the input power needs to be braked, the brake piston can be driven to move to the left by supplying oil to the piston chamber of the brake piston, thereby pressing against the dynamic friction plate on the left. The movement of the dynamic friction plate will press against the static friction plate on the left, thereby relying on the static friction force to brake the high-strength alloy sun shaft connected to it, thereby ensuring that the power is cut off to prevent it from continuing to transmit downstream. When the oil supply is lost, the pressing force of the brake piston on the dynamic friction plate disappears. At this time, the dynamic friction plate will no longer brake the static friction plate, so it will return to a non-braking state. At this time, the high-strength alloy sun shaft is in a rotatable state. When the high-strength alloy sun shaft is running, it will continue to transmit power to the downstream through the sun gear at its end, thereby achieving the purpose of rapid deceleration and speed change.

[0038] In any of the above schemes, it is preferred that the friction plate assembly includes a plurality of static friction plates evenly spaced and fixedly arranged along the axial direction of the high-strength alloy sun shaft, and a dynamic friction plate is arranged between two adjacent static friction plates. When in the braking state, the dynamic friction plate and the static friction plate are frictionally tightly fitted together, and a friction plate adjustment plate coaxially arranged therewith is installed on the right side of the dynamic friction plate on the right side.

[0039] It should be noted that the friction plate assembly relies on the passive axial displacement of the annular dynamic friction plate to achieve tightness against the annular static friction plate at the corresponding position, thereby relying on the static friction force between the two to achieve friction braking, and ultimately achieve the purpose of driving the corresponding high-strength alloy sun shaft to brake.

[0040] In any of the above schemes, it is preferred that the upper and lower parts of the high-strength alloy sun shaft on the left side of the reinforced linkage component are symmetrically provided with cast cylinder barrels that are integrally formed and fixed thereto, and the inner sides of the plunger cavities of the two cast cylinder barrels are respectively connected to the diverter oil supply channel arranged at the left center of the high-strength alloy sun shaft, and the left end of the diverter oil supply channel is sealed and connected to the pressure oil port arranged at the center of the planetary carrier, and the pressure oil port is used to connect to the external oil supply pipeline, and a radial piston is sealed and inserted in the plunger cavity of each cast cylinder barrel, and the outer end of each radial piston abuts against the inner wall of the built-in through cavity through an auxiliary brake friction block.

[0041] It should be noted that the purpose of the cast cylinder, radial piston and auxiliary brake friction block set here is mainly for safety protection braking. They can cooperate with the brake unit to achieve double braking, effectively ensure the safety when lifting heavy objects with large loads and high torque, and achieve instant braking and effective braking.

[0042] When the auxiliary braking function needs to be activated, the high-pressure oil is transported to the pressure oil port and the diversion oil supply channel by relying on the external oil supply equipment. The high-pressure oil is used to push the radial piston outward through the two diversion ports at its right end, thereby driving the auxiliary braking friction block at its end to move outward and exert a pressure on the inner wall of the built-in through cavity, thereby relying on friction braking and cooperating with the braking of the brake unit to improve the braking effect and reliability.

[0043] In any of the above schemes, it is preferred that a lubricating oil channel is provided at the right end of the brake housing, the oil outlet end of the lubricating oil channel is connected to the inside of the piston chamber, and the left end of the lubricating oil channel is provided with an oil port seal connected to the motor connecting plate.

[0044] It should be noted that: the lubricating oil channel can ensure that the corresponding brake piston can be driven to shift when the brake unit is used for braking, so as to achieve the purpose of quickly controlling the brake piston to press against the moving friction plate to achieve braking.

[0045] In any of the above solutions, preferably, two concentrically arranged built-in annular weight-reducing cavities are provided inside the linkage reinforcement plate.

[0046] The configured built-in annular weight-reducing cavity can effectively reduce the weight of the linkage reinforcement plate, ensuring its relative lightness and smoothness during operation.

[0047] Specific working principle:

[0048] The hydraulic winch in this design adopts a compact structural layout with a built-in speed reduction mechanism at the left end and a brake unit at the right end. It can effectively ensure the flexibility of movement when lifting in a narrow and open environment, reduce the probability of limited operating movement in a small space, and improve the safety of equipment operation.

[0049] When working, the externally installed hydraulic motor serves as input power to drive the brake unit connected to it to brake on demand. When braking is required, external oil is supplied to drive the piston inside the brake unit to move and push the corresponding dynamic friction plate against the static friction plate to achieve friction plate braking. When normal operation is required, the brake unit is in an idle state, and relies on transmission power to transfer power to the high-strength alloy sun shaft to achieve continued power transmission.

[0050] When the high-strength alloy sun shaft is running, it will drive the corresponding built-in speed reduction mechanism to achieve planetary speed reduction. After deceleration, it will be output through the fixed gear ring and drive the drum body connected to it to follow the rotation, thereby achieving the purpose of deceleration. The hydraulic motor adopts a large torque product structure, which can effectively ensure the high horsepower output of the entire hydraulic winch and improve its lifting capacity. Considering the safety of braking under load, when the auxiliary braking function needs to be started, the high-pressure oil is delivered to the pressure oil port and the diversion oil supply channel by relying on the external oil supply equipment. The high-pressure oil passes through the two diversion ports at its right end and is used to push the radial piston outward, thereby driving the auxiliary brake friction block at its end to shift outward and produce a pressing effect on the inner wall of the built-in through cavity, thereby relying on friction braking, and the braking of the brake unit can improve the braking effect and reliability.

[0051] From the above, it can be seen that when the high-strength alloy sun shaft follows the operation of the hydraulic winch, the high-strength alloy sun shaft can transmit the power at the right end to the built-in speed reduction and transmission mechanism, and the speed of the entire drum body can be controlled by the deceleration of the built-in speed reduction and transmission mechanism. At the same time, when the high-strength alloy sun shaft is in operation, radial support can be achieved through the reinforced linkage components, effectively ensuring its rigidity during operation; the structure of the built-in planetary reducer can effectively reduce the external dimensions of the entire winch, and can effectively meet the large torque lifting requirements in a small space during lifting and hoisting operations. The overall structure is compact and occupies little external space; the two radial pistons arranged on the left side of the reinforced linkage component can rely on the auxiliary brake friction block to achieve tightness against the inside of the built-in through cavity under high-pressure oil supply, thereby achieving the purpose of auxiliary cooperation with the brake unit to achieve safe braking.

[0052] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model. For technicians in this technical field, any replacement improvements or changes made to the implementation methods of the utility model fall within the protection scope of the utility model.

[0053] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A hydraulic winch with a built-in planetary reducer comprises a left side plate and a right side plate, a drum body is installed between the left side plate and the right side plate, the bottoms of the left side plate and the right side plate are fixedly installed on the top of a base, characterized in that: The left end of the built-in through cavity of the reel body is cooperated with the installed built-in speed reduction mechanism, and the right end of the built-in through cavity of the reel body is cooperated with the installed brake unit, the right end of the brake unit is used to connect with the external hydraulic motor, and the left end of the built-in speed reduction mechanism is fixedly installed on the left side plate, the left outer wall of the built-in speed reduction mechanism is tightly fitted with the left inner wall of the built-in through cavity through the left deep groove bearing movably sleeved thereon, the output end of the built-in speed reduction mechanism is fixedly connected to the reel body, the right end of the brake unit is fixedly installed at the mounting hole of the right side plate and the end portion extends to the right side of the right side plate, the middle outer wall of the brake unit is movably inserted in a right deep groove bearing, and the outer wall of the right deep groove bearing is fixed on the inner wall of the built-in through cavity.

2. The hydraulic winch with a built-in planetary reducer according to claim 1, characterized in that: A reinforcing linkage component is provided in the built-in through cavity between the built-in speed reduction transmission mechanism and the brake unit.

3. The hydraulic winch with a built-in planetary reducer according to claim 2, characterized in that: The reinforced linkage component includes a high-strength alloy sun shaft coaxially arranged inside the built-in through cavity, the left end of the high-strength alloy sun shaft is connected to the power input end of the built-in speed reduction mechanism, and the right end of the high-strength alloy sun shaft is connected to the power output end of the brake unit. A linkage reinforcement plate coaxially arranged therewith is integrally formed and fixed on the middle outer wall of the high-strength alloy sun shaft, and the outer wall of the linkage reinforcement plate is provided with a circle of chamfered curved surface, and the outer wall of the linkage reinforcement plate is movably pressed against the inner wall of the built-in through cavity.

4. The hydraulic winch with a built-in planetary reducer according to claim 3, characterized in that: The built-in speed reduction and transmission mechanism includes a plurality of planetary gears that are evenly distributed around the sun gear at the end of the high-strength alloy sun shaft and meshed with each other. The center hole of each planetary gear is movably sleeved on the outer side wall of the planetary gear shaft at the corresponding position, and the left end of each planetary gear shaft is movably inserted into the corresponding mounting hole of the planetary carrier at the corresponding position. The planetary carrier is fixedly connected to the left side plate by bolts, and a fixed gear ring is sleeved on the periphery of each planetary gear. The inner ring teeth of the fixed gear ring are respectively meshed with the gear teeth of each planetary gear. The outer side wall of the fixed gear ring is welded and fixedly connected to the reel body, and a gear ring retaining ring coaxially arranged therewith is fixedly installed on the right end face of the fixed gear ring, and the left deep groove bearing is movably sleeved on the outer side wall of the left side of the planetary carrier.

5. The hydraulic winch with a built-in planetary reducer according to claim 4, characterized in that: An internal space is provided between the brake unit and the internal speed reduction and transmission mechanism, and an axial length of the internal through cavity is three times the axial length of the internal space.

6. The hydraulic winch with a built-in planetary reducer according to claim 5, characterized in that: The brake unit includes a brake housing, the right end of which is fixedly installed in the mounting hole of the right side plate, and the outer side wall of the left end of the brake housing is inserted in the axial hole of the right deep groove bearing. A motor connecting disk is fixedly installed on the right end of the brake housing on the outer side of the right side plate, and the motor connecting disk is used to install a hydraulic motor. A brake piston is installed in the piston cavity on the right side of the cavity of the brake housing, and a coupling sleeve is coaxially installed in the cavity of the brake housing on the left side of the brake piston. The right end of the coupling sleeve is used to connect to the output shaft of the hydraulic motor, and a friction plate assembly is cooperated on the outer side wall of the coupling sleeve. A friction plate baffle is fixedly installed on the left end surface of the brake housing on the left side of the friction plate assembly.

7. The hydraulic winch with a built-in planetary reducer according to claim 6, characterized in that: The friction plate assembly includes a plurality of static friction plates evenly spaced and fixedly arranged along the axial direction of the high-strength alloy sun shaft, a dynamic friction plate is arranged between two adjacent static friction plates, and when in the braking state, the dynamic friction plate and the static friction plate are frictionally tightly fitted together, and a friction plate adjustment plate coaxially arranged therewith is installed on the right side of the dynamic friction plate on the right side.

8. The hydraulic winch with a built-in planetary reducer according to claim 7, characterized in that: The upper and lower parts of the high-strength alloy sun shaft on the left side of the reinforced linkage component are symmetrically provided with cast cylinder barrels integrally formed and fixed therewith, the inner sides of the plunger cavities of the two cast cylinder barrels are respectively connected to the diverter oil supply channel arranged at the left center of the high-strength alloy sun shaft, the left end of the diverter oil supply channel is sealed and connected to the pressure oil port arranged at the center of the planetary carrier, and the pressure oil port is used to connect to the external oil supply pipeline, and a radial plunger is sealed and inserted in the plunger cavity of each cast cylinder barrel, and the outer end of each radial plunger abuts against the inner wall of the built-in through cavity through an auxiliary brake friction block.

9. The hydraulic winch with a built-in planetary reducer according to claim 8, characterized in that: A lubricating oil channel is arranged at the right end of the brake housing, the oil outlet end of the lubricating oil channel is connected with the inside of the piston cavity, and the left end of the lubricating oil channel is connected with an oil port seal arranged on the motor connecting plate.

10. The hydraulic winch with a built-in planetary reducer according to claim 9, characterized in that: Two concentrically disposed built-in annular weight-reducing cavities are arranged inside the linkage reinforcement plate.

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