CN117003144A - Winch with rope arrangement and load protection - Google Patents

Abstract

The utility model relates to a winch with rope arrangement and load protection, comprising: the winch comprises a frame body, a rope arrangement device arranged in the frame body and positioned in front, a roller arranged in the frame body and positioned behind the rope arrangement device in parallel, a hydraulic motor and a speed reduction assembly fixedly connected with the frame body respectively on two sides of the roller, a brake mechanism arranged in the roller and close to one side of the hydraulic motor, and a load protection device arranged between the brake mechanism and the speed reduction assembly; the load protection device is in the cylinder, space saving, also can not receive the interference of external environment, mechanical transmission structure, after testing a reasonable parameter to each action related part during the manufacturing, can obtain reliable and stable reaction action, consequently, more reliable than the mode of prior art monitoring cable tension to this load protection device can automatic re-setting at the last moment of shut down, and the operation personnel just need eliminate the cable winding just so can resume the operation immediately.

Description

Winch with rope arrangement and load protection

Technical Field

The utility model belongs to the technical field of winches, and particularly relates to a winch with rope arrangement and load protection.

Background

In various winches, when the length of the matched rope is longer, the rope arranging device is generally matched to ensure that the ropes are uniformly and orderly arranged when being stored, for example, the Chinese patent of the utility model of the grant publication No. CN201320506549.9 discloses the rope arranging device of the winch, the improvement point is to position the winch in the rope winding and unwinding process, the ordered arrangement of the steel ropes on the roller is realized, and the influence of the disordered ropes and the crossed storage of the steel ropes on the service life of the steel ropes is avoided. Winch with rope arrangement device is also used for long distance traction, such as winding and unwinding temporary cables of river crossing, bridge crossing and the like, during the long distance winding process, the probability of winding and stumbling of the cables with foreign matters on the way is increased, the cables are extremely easy to break and damage if not stopped in time, therefore, electronic devices are often arranged in the prior art to monitor the tension of the cables, and when the tension exceeds a preset value, namely the condition of overload, the power is actively turned off, but the electronic devices have high probability of failure under outdoor bad environment, therefore, in the use scenes, the winch is also required to have a protection device which can stably lead the traction to be immediately disabled when the load is overloaded in order to further protect the cables.

Disclosure of Invention

The utility model aims at the problems and provides a winch with rope arrangement and load protection, and the overload protection device formed by the mechanical structure of the winch during rope arrangement and wire collection can stably and immediately lead traction to be invalid when a rope is wound and stumbled by foreign matters.

The utility model aims at realizing the following technical scheme: a winch with rope ranging and load protection, comprising: the winch comprises a frame body, a rope arrangement device arranged in the frame body and positioned in front, a roller arranged in the frame body and positioned behind the rope arrangement device in parallel, a hydraulic motor and a speed reduction assembly fixedly connected with the frame body respectively on two sides of the roller, a brake mechanism arranged in the roller and close to one side of the hydraulic motor, and a load protection device arranged between the brake mechanism and the speed reduction assembly;

an output shaft of the hydraulic motor passes through the brake mechanism and is detachably and fixedly connected with one end of the load protection device, and a receiving input shaft of the speed reducing assembly is detachably and fixedly connected with the other end of the load protection device; the output end of the speed reducing assembly is an external gear, the external gear is directly meshed with a roller provided with a matching annular gear, when the whole winding work is performed, the output shaft of the hydraulic motor passes through the braking mechanism to transmit power to the load protection device, the load protection device transmits power to the receiving input shaft of the speed reducing assembly, the speed reducing assembly transmits power back to the roller, the rope arrangement device is synchronously started when the hydraulic motor is started, the rope winding device is synchronously started in the rope winding process, when foreign matters are entangled on a rope, the traction force of the roller for pulling the rope is changed in an increasing way, after the traction force reaches a set value, the load protection device is triggered to start, the power output by the hydraulic motor is interrupted, the rope is protected, and the load protection device can automatically reset after the motor is stopped.

Preferably, the triggering load protection device comprises a movable connecting sleeve with the largest diameter positioned in the middle, and a transmission long shaft which is coaxial with and penetrates through the movable connecting sleeve; the main body part of the movable connecting sleeve is integrally provided with a bearing installation part at one end, the same end and the bearing installation part extend to the far end to form a connecting part, and the connecting part is connected with a receiving input shaft of the speed reducing assembly; the edge of the other end of the main body part of the movable connecting sleeve is provided with a necking with the diameter reduced inwards, a plurality of connecting blocks are fixedly arranged on the inner wall of the necking at equal intervals, one side of each connecting block, which is far away from the inner wall of the necking, is an arc surface, one end, which faces the inside of the movable connecting sleeve, is provided with an extending section, the shape of the extending section tends to be gradually smaller, and two avoidance grooves are formed in the arc surface of the extending section; one section of the transmission long shaft facing the necking side is provided with a connecting key slot, and the other end is sleeved with a bearing. The design structure strength of the movable connecting sleeve as a whole is better.

Preferably, the triggering load protection device further comprises an axial fixing ring seat rotatably connected with the transmission long shaft, a first spring propping rotating ring which is rotatably matched with the axial fixing ring seat and one end of which is abutted against the axial fixing ring seat, the other end of which is a free end, a second spring propping rotating ring which is coaxial with the first spring propping rotating ring and is arranged at intervals, and a compression spring which is coaxial with the first spring propping rotating ring, one end of which is fixed on the first spring propping rotating ring, and the other end of which is fixed on the second spring propping rotating ring. The first spring jacking swivel, the second spring jacking swivel and the compression spring are combined to provide friction force between cam surfaces, load is borne through the friction force, that is, the elasticity of the compression spring determines how large load is used for switching overload protection, and the space between the inner space and the outer space of the setting position of the compression spring is left, so that the size specification of the compression spring can be very wide.

Preferably, the axial fixing ring seat is mounted against the main body portion of the movable connecting sleeve and is an inner bottom wall facing the bearing mounting portion side; the first spring propping rotary ring, the second spring propping rotary ring and the compression spring are all positioned in the movable connecting sleeve. The design has compact structure and small space occupation.

Preferably, the trigger load protection device further comprises a driven cam piece rotatably connected with the transmission long shaft, a driving cam piece in contact fit with the cam surface of the driven cam piece and connected with the connecting key groove, a fixed retainer ring fixedly connected with the transmission long shaft through a connecting pin arranged radially at the plane end of the driving cam piece, and a driving connecting sleeve sleeved on the peripheries of the driving cam piece and the driven cam piece and transmitting the driving cam piece and the driven cam piece in a collision mode; the second spring is propped against the rotary ring and is rotatably sleeved on the back surface of one side of the cam of the driven cam piece. The cam surface is selected for contact fit in power transmission, so that a balance point can be automatically found under the fit of the cam surface and the compression spring, namely, in a certain contact range of the two inclined planes, the transmission is continuously effective, once the load is overlarge, the two inclined planes slide, the compression spring is extruded, the connection structure is separated, and the traction is invalid, so that the protection purpose is achieved.

Preferably, the driving cam element and the driven cam element are both planar at one end and are cam surfaces at the other end, the cam surfaces are formed by connecting two sections of slower slope surfaces with two sections of harder slope surfaces, the slower slope surfaces are defined as long slope surfaces, the harder slope surfaces are defined as short slope surfaces, two long slope surfaces on the driving cam element are defined as first long slope surfaces, the short slope surfaces are defined as first short slope surfaces, two long slope surfaces on the driven cam element are defined as second long slope surfaces, and the short slope surfaces are defined as second short slope surfaces; the outer diameters of the driving cam piece and the driven cam piece are the same, convex abutting portions are arranged on the outer peripheral surfaces corresponding to the connection of the long slope and the short slope, the abutting portions of the driving cam piece are defined as driving wheel abutting portions, and the abutting portions of the driven cam piece are defined as driven wheel abutting portions.

Preferably, one end of the driving connecting sleeve is of a spline structure, the other end of the driving connecting sleeve is of a sleeve-like structure, the side wall of an inner hole of the sleeve structure passes through a grid section with protrusions, the diameter of the grid section is opposite to that of the inner hole of the sleeve structure, one end of the spline is fixedly connected with an output shaft of the hydraulic motor, and the grid section is abutted against the abutting part of the driving wheel after the driving connecting sleeve is integrally installed. The sleeve structure and the design of the check section are similar to the common key connection in shaft sleeve connection, and the connection is reliable and stable.

Preferably, the end face of the driven cam piece facing the side of the driving connecting sleeve is provided with the joint holes matched with the number, the position and the shape of the connecting blocks.

Preferably, a blocking door is arranged in the joint hole, the blocking door is externally attached to the cambered surface of the joint hole, one end of the blocking door is hinged to the bottom surface of the joint hole, and the other end of the blocking door is cylindrical. The centrifugal force is increased by the columnar weight, so that the opening and closing time of the plugging door can be conveniently set by the counterweight.

Preferably, a magnetic attraction stone is provided on the arc surface of the joint hole. The magnetic attraction stone ensures that the blocking door is adsorbed after the centrifugal force is reduced to a certain degree, so that the space of the joint hole is completely opened and is ready for joint.

In summary, compared with the prior art, the utility model has the following advantages:

the winch is characterized in that a load protection device is arranged in the drum, so that space is saved, the interference of external environment is avoided, a mechanical transmission structure is realized, and after a reasonable parameter is tested on each action related component in the manufacturing process, a stable and reliable reaction action can be obtained.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the overall structure of another angle of the present utility model;

FIG. 3 is a right side view of the present utility model;

FIG. 4 is a full cross-sectional view at A-A in FIG. 3;

FIG. 5 is a schematic view of the structure of the present utility model with the rope guide and drum hidden;

FIG. 6 is a schematic diagram of a load protection device;

FIG. 7 is an exploded view of the various components of the load protection apparatus;

FIG. 8 is a schematic view of the structure of the load protection device with the movable connecting sleeve hidden;

FIG. 9 is a schematic view of the load protection device after the movable connecting sleeve and the driving connecting sleeve are hidden;

FIG. 10 is a schematic view of a movable connecting sleeve;

FIG. 11 is a schematic diagram of the combination of the driving shaft, the driven cam member, and the driving cam member;

fig. 12 is a schematic structural view of a driving connection sleeve;

FIG. 13 is an enlarged view of a portion of FIG. 11 at A;

fig. 14 is a schematic structural diagram of the combination of the driving connecting sleeve, the driven cam member and the driving cam member.

The marks in the figure:

the device comprises a frame body 01, a bearing 02, a fixed retainer ring 03, a magnet 04, a rope arrangement device 100, a roller 200, a hydraulic motor 300, a speed reduction assembly 400, a brake mechanism 500, a load protection device 600, a movable connecting sleeve 610, a bearing mounting part 612, a connecting part 613, a shrinkage 614, a connecting block 615, an avoidance groove 616, a transmission long shaft 620, a connecting key groove 621, an axial fixed ring seat 630, a first spring top rotating ring 640, a second spring top rotating ring 650, a compression spring 660, a driven cam member 670, a driven wheel abutting part 671, a second long slope 672, a second short slope 673, a joint hole 674, a driving cam member 680, a driving wheel abutting part 681, a first long slope 682, a first short slope 683, a driving connecting sleeve 690, a grid blocking part 691 and a blocking door 700.

Detailed Description

The utility model is further described below with reference to embodiments shown in the drawings in which:

example 1

As shown in fig. 1-5, a winch with rope ranging and load protection, similar in basic structure to prior art winches with rope ranging, comprises: a frame body 01, a rope arrangement device 100 arranged in front and a roller 200 arranged in parallel in the frame body 01, wherein two sides of the roller 200 are respectively provided with a hydraulic motor 300 and a speed reduction assembly 400 which are fixedly connected with the frame body 01, a brake mechanism 500 arranged at one side of the roller 200 close to the hydraulic motor 300, and a load protection device 600 arranged between the brake mechanism 500 and the speed reduction assembly 400;

an output shaft of the hydraulic motor 300 passes through the brake mechanism 500 and is detachably and fixedly connected with one end of the load protection device 600, and a receiving input shaft of the speed reduction assembly 400 is detachably and fixedly connected with the other end of the load protection device 600; the output end of the speed reducing assembly 400 is an external gear, the external gear is directly meshed with the roller 200 provided with the matched internal teeth, when the whole winding work is performed, the output shaft of the hydraulic motor 300 passes through the brake mechanism 500 to transmit power to the load protecting device 600, the load protecting device 600 transmits power to the receiving input shaft of the speed reducing assembly 400, the speed reducing assembly 400 transmits power back to the roller 200, the hydraulic motor 300 is started, the rope arranging device 100 is synchronously started, the rope arranging in the embodiment adopts a lead screw driving mode, which is not repeated in the prior art, in the winding process, when the rope is entangled by foreign matters, the traction force of the roller 200 pulling the rope is increased, the load protecting device 600 is triggered after the traction force reaches a set value, the power output by the hydraulic motor 300 is interrupted in the load protecting device 600, the rope is protected, the operator can automatically reset after the motor is shut down, the foreign matters are eliminated, the operator can normally start after checking to be ready, and the operation can be continued.

As shown in fig. 6, the trigger load protection device 600 includes a movable connecting sleeve 610 with a relatively largest diameter positioned in the middle, and a transmission long shaft 620 coaxial with and penetrating the movable connecting sleeve 610; as shown in fig. 10, the movable connecting sleeve 610 has the largest body shape and the outermost ring as the main body part; the main body portion of the movable connecting sleeve 610 is integrally provided with a bearing mounting portion 612 at one end thereof, and the same end, the bearing mounting portion 612, extends distally a connecting portion 613, and the connecting portion 613 is connected with the receiving input shaft of the reduction assembly 400; the edge of the other end of the main body part of the movable connecting sleeve 610 is provided with a necking 614 with the diameter reduced inwards, a plurality of connecting blocks 615 are fixedly arranged on the inner wall of the necking 614 at equal intervals, one side of each connecting block 615, which is far away from the inner wall of the corresponding necking 614, is an arc surface, one end, which faces the inside of the movable connecting sleeve 610, is provided with an extending section, the shape of the extending section tends to be smaller, and two avoidance grooves 616 are formed in the arc surface of the extending section; the transmission long shaft 620 is provided with a connecting key slot 621 at one side facing the necking 614, and a bearing 02 is sleeved at the other end, and the transmission long shaft 620 is rotatably connected and combined with the movable connecting sleeve 610 through the matching connection of the bearing 02 and the bearing mounting part 612.

As shown in fig. 7, the trigger load protection device 600 further includes an axial fixed ring seat 630 rotatably connected to the transmission long shaft 620, a first spring-propping rotating ring 640 rotatably fitted to the axial fixed ring seat 630 and having one end abutting against the axial fixed ring seat 630 and the other end being a free end, a second spring-propping rotating ring 650 coaxially and spaced apart from the first spring-propping rotating ring 640, and a compression spring 660 coaxially and having one end fixed to the first spring-propping rotating ring 640 and the other end fixed to the second spring-propping rotating ring 650;

the axial fixed ring seat 630 is attached to the inner bottom wall of the main body of the movable connecting sleeve 610 facing the bearing mounting part 612, and the axial fixed ring seat 630 is fixed in the axial direction after being mounted and can rotate along the axis; the first spring propping rotating ring 640, the second spring propping rotating ring 650 and the compression spring 660 are all positioned inside the movable connecting sleeve 610, the compression spring 660 is compressed after the second spring propping rotating ring 650 is stressed, and the second spring propping rotating ring 650 obtains axial movement along the transmission long shaft 620.

As shown in fig. 9, the trigger load protection device 600 further includes a driven cam member 670 rotatably connected to the driving long shaft 620, a driving cam member 680 in contact with the cam surface of the driven cam member 670 and having a protrusion on the inner wall thereof for being connected to the connecting key slot 621 as a key, a fixed retainer ring 03 fixedly connected to the driving cam member 680 at the planar end thereof and the driving long shaft 620 by radially providing a connecting pin, and a driving connecting sleeve 690 sleeved on the peripheries of the driving cam member 680 and the driven cam member 670 and driving the driving cam member 680 in a manner of abutting against the driving cam member and the driven cam member 670; the second spring-loaded swivel 650 is rotatably mounted on the back of the cam side of the driven cam member 670.

As shown in fig. 12 and 7, the driving cam element 680 and the driven cam element 670 are both planar at one end and cam surfaces at the other end, the cam surfaces are formed by two sections of slower slope surfaces connected with two sections of faster slope surfaces, the slower slope surfaces are defined as long slope surfaces, the faster slope surfaces are defined as short slope surfaces, the two long slope surfaces on the driving cam element 680 are defined as first long slope surfaces 682, the short slope surfaces are defined as first short slope surfaces 683, the two long slope surfaces on the driven cam element 670 are defined as second long slope surfaces 672, and the short slope surfaces are defined as second short slope surfaces 673; the outer diameters of the driving cam member 680 and the driven cam member 670 are the same, convex abutting portions are arranged on the outer circumferential surfaces corresponding to the intersection of the long slope and the short slope, the abutting portions of the driving cam member 680 are defined as driving wheel abutting portions 681, and the abutting portions of the driven cam member 670 are defined as driven wheel abutting portions 671.

As shown in fig. 12, one end of the driving connection sleeve 690 is in a spline structure, the other end is in a sleeve-like structure, the side wall of the inner hole of the sleeve structure passes through a protruding check segment 691 with an opposite diameter, one end of the spline is fixedly connected with the output shaft of the hydraulic motor 300, and the check segment 691 is in contact with the driving wheel contact portion 681 after the driving connection sleeve 690 is integrally installed, at this time, the driven wheel contact portion 671 does not contact with the surface of the check segment 691 in the rotation direction under the thrust of the compression spring 660, that is, the driven wheel contact portion 671 has a sliding rotation space, so that the driven cam member 670 can move along the axial direction.

As shown in fig. 11, the end surface of the driven cam member 670 facing the side of the driving connection sleeve 690 is provided with engagement holes 674 which are matched with the number, position and shape of the connection block 615, the size of the engagement holes 674 is slightly larger than that of the connection block 615 so as to be more easily engaged with the connection block 615 under the condition of slow rotation, if the cable is stumbled by foreign matters and the traction force is increased during operation, the engagement holes 674 and the connection block 615 are disengaged, the load of the disengaged instant driven cam member 670 becomes small immediately, and the driven cam member 680 drives the driven cam member to rotate quickly, the engagement holes 674 and the connection block 615 can not be engaged under the quick rotation, the movable connection sleeve 610 stops rotating, and the corresponding roller 200 stops, so that the cable is ensured not to be pulled continuously.

In addition, in order to make the driven cam member 670 rotate at a relatively slow speed, the connection block 615 cannot enter the connection hole 674, but the connection block 615 is allowed to enter the connection hole 674 when the driven cam member 670 is about to stop rotating at the last or two circles, under the purpose, the connection block 700 which is automatically opened by centrifugal force is arranged in the connection hole 674, as shown in fig. 13, the shape of the connection block 700 is attached to the cambered surface of the connection hole 674, one end of the connection block 700 is hinged at the bottom surface of the connection hole 674, the other end of the connection block 700 is cylindrical, as a counterweight, a magnetic stone 04 is arranged on the cambered surface of the connection hole 674, when the driven cam member 670 rotates at a fast speed, the centrifugal force is free from the suction force of the magnetic stone 04, the connection block 700 is arranged in a flush state with the end surface of the driven cam member 670, so that even if the connection block 615 is blocked by the connection block 700, the connection block 700 is not completed, as shown in the connection block 700, so that the drum 200 is kept, the cable is not pulled continuously, after the hydraulic motor 300 stops pressing a button, the driven cam member 670 gradually drops, the centrifugal force gradually, the weight of the connection block 700 is designed to stop the final circle, and the connection block 700 can be completely overcome when the weight is completely attached to the connection block 300, and the connection block is completely attached to the final circle, and the connection block 300 is completed.

The dynamic relationship between the driving cam element 680, the driven cam element 670 and the transmission long shaft 620 is shown in fig. 11 after the three elements are combined, as shown in fig. 8-9, under the action of the compression spring 660, the first long slope 682 and the second long slope 672 are mutually abutted, the fixed retainer ring 03 limits the movement of the driving cam element 680, that is, the driving cam element 680 and the driven cam element 670 are in a balanced state under the action of the compression spring 660, at this time, the driving cam element 680 rotates to drive the driven cam element 670 to rotate together, and if the driven cam element 670 adds a load under the action of an external force, the first long slope 682, the second long slope 672 and the compression spring 660 seek a balance point again, that is, the contact position of the first long slope 682 and the second long slope 672 shifts from the lower position to the higher position under the load, and the compression spring 660 is further pressed to provide a larger reaction force, the friction force between the first long slope surface 682 and the second long slope surface 672 is increased, so that a larger load can be borne after the balance, and at the moment, the movable connecting sleeve 610 is engaged with the engaging hole 674 through the connecting block 615 to transmit power, the load is increased, which is equal to the displacement of the driven cam member 670 to the side of the compression spring 660, that is, the engaging depth of the connecting block 615 and the engaging hole 674 is reduced, when the load is increased to a certain value (or the set value), the connecting block 615 is completely separated from the engaging hole 674, at the moment, the connecting block 615 cannot be immediately returned to the engaging hole 674, as before, the plane contact friction at the end face engaging hole 674 of the connecting block 615 is generated, at the moment, the brake mechanism 500 is set to intervene to ensure the stability of the drum 200, while the connecting block 615 is in the friction state, but the operator is in the operating state, the hydraulic motor 300 is immediately shut down, so that friction damage is not great, and after the hydraulic motor 300 is shut down, the connecting block 615 reenters the joint hole 674 to complete resetting, and the whole action process achieves the aims of controlling overload and protecting cables.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (10)

1. A winch with rope ranging and load protection, comprising: the winch is characterized in that a load protection device (600) is further arranged between the brake mechanism (500) and the speed reduction assembly (400);

an output shaft of the hydraulic motor (300) passes through the brake mechanism (500) and is detachably and fixedly connected with one end of the load protection device (600), and a receiving input shaft of the speed reduction assembly (400) is detachably and fixedly connected with the other end of the load protection device (600); the output end of the speed reducing assembly (400) is an external gear, the external gear is directly meshed with the roller (200) provided with the matched annular gear, when the whole winding work is performed, the output shaft of the hydraulic motor (300) penetrates through the braking mechanism (500) to transmit power to the load protection device (600), the load protection device (600) transmits power to the receiving input shaft of the speed reducing assembly (400), the speed reducing assembly (400) transmits power back to the roller (200), the hydraulic motor (300) is started, the rope arranging device (100) is synchronously started, in the rope winding process, when foreign matters are entangled, the traction force of the roller (200) for pulling the rope is increased, the load protection device (600) is triggered to be started after the traction force reaches a set value, the power output by the hydraulic motor (300) is interrupted, the rope is protected, and the load protection device (600) can be automatically reset after the motor is stopped.

2. Winch with rope ranging and load protection according to claim 1, characterized in that said triggering load protection means (600) comprise a mobile connection sleeve (610) with the largest diameter, located in the middle, a transmission long shaft (620) coaxial and penetrating the mobile connection sleeve (610); the main body part of the movable connecting sleeve (610) is integrally provided with a bearing mounting part (612) at one end, the same end and the bearing mounting part (612) extend to the far end to form a connecting part (613), and the connecting part (613) is connected with a receiving input shaft of the speed reducing assembly (400); the edge of the other end of the main body part of the movable connecting sleeve (610) is provided with a necking (614) with the diameter reduced inwards, a plurality of connecting blocks (615) are fixedly arranged on the inner wall of the necking (614) at equal intervals, one side of each connecting block (615) far away from the inner wall of the corresponding necking (614) is a cambered surface, one end facing the inside of the movable connecting sleeve (610) is provided with an extending section, the shape of the extending section tends to be smaller gradually, and two avoidance grooves (616) are formed in the cambered surface of the extending section; one section of the transmission long shaft (620) facing the necking (614) is provided with a connecting key slot (621), and the other end is sleeved with a bearing (02).

3. The winch with rope arrangement and load protection according to claim 2, wherein the trigger load protection device (600) further comprises an axial fixing ring seat (630) rotatably connected with the transmission long shaft (620), a first spring propping rotating ring (640) rotatably matched with the axial fixing ring seat (630) and having one end leaning against the axial fixing ring seat (630) and the other end being a free end, a second spring propping rotating ring (650) coaxial with the first spring propping rotating ring (640) and arranged at intervals, and a compression spring (660) coaxial with the first spring propping rotating ring (640) and having one end fixed on the first spring propping rotating ring and the other end fixed on the second spring propping rotating ring (650).

4. A winch with rope ranging and load protection according to claim 3, characterized in that said axially fixed ring seat (630) is mounted against the main body portion of the movable connecting sleeve (610) and is an inner bottom wall facing the side of the bearing mounting portion (612); the first spring propping rotating ring (640), the second spring propping rotating ring (650) and the compression spring (660) are all positioned inside the movable connecting sleeve (610).

5. The winch with rope arrangement and load protection according to claim 3, wherein the trigger load protection device (600) further comprises a driven cam member (670) rotatably connected with the transmission long shaft (620), a driving cam member (680) in contact fit with the cam surface of the driven cam member (670) and connected with the connecting key groove (621), a fixed retainer ring (03) fixedly connected with the transmission long shaft (620) at the plane end of the driving cam member (680) through a connecting pin arranged radially, and a driving connecting sleeve (690) sleeved on the peripheries of the driving cam member (680) and the driven cam member (670) and transmitting the driving cam member and the driven cam member in a collision manner; the second spring is rotatably sleeved on the back surface of the cam side of the driven cam piece (670) in a propping connection mode.

6. The winch with rope ranging and load protection according to claim 5, wherein the driving cam member (680) is flat at one end and cam surface at the other end as the cam follower (670), the cam surface is composed of two sections of slower slope surfaces connected with two sections of harder slope surfaces, the softer slope surfaces are defined as long slope surfaces, the harder slope surfaces are defined as short slope surfaces, two long slope surfaces on the driving cam member (680) are defined as first long slope surfaces (682), the short slope surfaces are defined as first short slope surfaces (683), two long slope surfaces on the cam follower (670) are defined as second long slope surfaces (672), and the short slope surfaces are defined as second short slope surfaces (673); the outer diameters of the driving cam piece (680) and the driven cam piece (670) are the same, convex abutting portions are arranged on the outer peripheral surfaces corresponding to the connection of the long slope and the short slope, the abutting portions of the driving cam piece (680) are defined as driving wheel abutting portions (681), and the abutting portions of the driven cam piece (670) are defined as driven wheel abutting portions (671).

7. The winch with rope arrangement and load protection according to claim 5, wherein one end of the driving connecting sleeve (690) is of a spline structure, the other end of the driving connecting sleeve is of a sleeve-like structure, the inner hole side wall of the sleeve structure is provided with a convex blocking section (691) with opposite diameter, one end of the spline is fixedly connected with the output shaft of the hydraulic motor (300), and the blocking section (691) is abutted against the driving wheel abutting part (681) after the driving connecting sleeve (690) is integrally installed.

8. Winch with rope arrangement and load protection according to claim 5, characterized in that the end face of the driven cam element (670) facing the side of the drive connection sleeve (690) is provided with engagement holes (674) matching the number, position, shape of the connection blocks (615).

9. The winch with rope arrangement and load protection according to claim 8, wherein a blocking door (700) is arranged in the joint hole (674), the blocking door (700) is shaped to be fitted with the cambered surface of the joint hole (674), one end of the blocking door (700) is hinged to the bottom surface of the joint hole (674), and the other end of the blocking door is cylindrical.

10. Winch with rope arrangement and load protection according to claim 9, characterized in that a magnetic attraction stone (04) is provided on the cambered surface of the engagement hole (674).