A winch for water conservancy projects

Abstract

The present invention relates to the technical field of water conservancy engineering, and discloses a winch for water conservancy engineering, including a resistance-type load control mechanism and a synchronous isobaric linkage mechanism. The winch for water conservancy engineering can play the necessary winding function, and at the same time, once the torque resistance caused by the hoisted object is greater than the maximum static friction between the rotating drum and the arc-shaped resistance plate, the drive motor can rotate normally at rated power, and the hoisted object will not continue to move, so that the maximum torque resistance of the drive motor is controlled to prevent the drive motor from being damaged due to overload, thereby improving the protection capability of the drive motor.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy engineering, in particular to a winch for water conservancy engineering. Background Art

[0002] Water conservancy projects are projects built to control and allocate natural surface water and groundwater to achieve the purpose of eliminating harm and promoting benefits. They are also called water projects. During the construction of water conservancy projects, winches are inevitably used. However, common winches are not convenient for adjusting the direction of the take-up drum. When the direction of the wire needs to be changed, the winch needs to be moved as a whole. Because the winch itself is relatively heavy, it is troublesome to move, which wastes manpower and time, reduces the construction efficiency of the winch, and greatly affects the construction of water conservancy projects.

[0003] To this end, the Chinese patent with the publication number "CN208666961U" announced "a winch for water conservancy projects", whose main structure includes a fixed seat, a rotating rod is fixedly connected at the midpoint of the bottom of the fixed seat, and the bottom of the rotating rod surface is fixedly connected to a rotating base through a bearing, and the left and right sides of the fixed seat are provided with a first groove, and the inner wall of the first groove and the side away from the notch are fixedly connected to a limit plate through a spring. The winch for water conservancy projects is provided with a fixed seat, a rotating rod, a bearing, a rotating base, a first groove, a spring, a limit plate, a second groove, a limit shaft, a limit rod, a limit pin, an annular fixed block, a third groove, a slider and a pressing rod, so as to realize a winch that is easy to adjust the direction of the take-up drum. During the construction process, the winch does not need to be moved as a whole, and only the take-up part of the winch needs to be rotated, which greatly saves manpower, saves construction time, improves the construction efficiency of the winch, and promotes the construction of water conservancy projects.

[0004] However, when the above-mentioned winch for water conservancy projects is actually used, since it is used in an underwater environment and the lifted object is subject to buoyancy in the water, when the lifted object floats to the surface, the driving motor used for lifting will be subject to increased rotational resistance. The above-mentioned winch for water conservancy projects has relatively poor protection capabilities for the driving motor and is unable to control the maximum lifting resistance of the equipment, which causes the driving motor to be easily overloaded and damaged. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a winch for water conservancy projects, which can perform the necessary winding function. At the same time, once the torque resistance caused by the lifted object is greater than the maximum static friction between the rotating drum and the arc-shaped contact plate, the drive motor can rotate normally under rated power, and the lifted object will not continue to move, thereby controlling the maximum torque resistance of the drive motor to prevent the drive motor from being damaged due to overload, improving the protection capability of the drive motor, and solving the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a winch for water conservancy projects, comprising a winch wheel with a No. 1 rotating shaft installed at both ends, a No. 1 fixed base installed on the periphery of the No. 1 rotating shaft through a bearing, and a driving motor fixedly installed in the No. 2 fixed base, and also comprising a contact-type load control mechanism, wherein a rotating drum capable of driving the No. 1 rotating shaft to rotate is arranged inside the winch, a plurality of No. 1 cylindrical hollow bodies located on the periphery of the rotating drum circumferential surface and capable of rotating, a piston plate located inside the No. 1 cylindrical hollow body and capable of axial movement along the No. 1 cylindrical hollow body, and an arc-shaped contact plate that contacts the circumferential surface of the rotating drum and can drive the rotating drum to rotate; and a synchronous isobaric linkage mechanism, wherein a No. 2 cylindrical hollow body capable of rotating is arranged inside the winch, a curved connecting rod fixedly installed on the periphery of one end of the No. 2 cylindrical hollow body and capable of driving a plurality of No. 1 cylindrical hollow bodies to rotate, and a No. 2 liquid flow hole capable of transferring the liquid inside the No. 2 cylindrical hollow body to the No. 1 cylindrical hollow body.

[0007] Preferably, the abutment-type load-controlling mechanism comprises a rotating drum and a plurality of cylindrical hollow bodies arranged in an annular array and located at the periphery of the rotating drum, one end surface of the rotating drum is provided with a concave structure and a shaft fixing groove for fixing and installing a rotating shaft, the circumferential surface of the rotating drum is provided with an annular abutment groove with a concave structure, a component movable cavity is provided inside the cylindrical hollow body, one end of the component movable cavity is provided with a shaft through hole connected to the external space, and the other end of the component movable cavity is provided with a through hole connected to the external space. A No. 1 liquid flow hole is provided on the outer circumferential surface of the No. 1 cylindrical hollow body, and a piston plate capable of axially moving along the No. 1 active cavity is arranged inside the No. 1 active cavity of the No. 1 component; an axial telescopic shaft passing through the No. 1 shaft body through-hole is fixedly mounted on the end surface of the piston plate facing the No. 1 shaft body through-hole; an arc-shaped contact plate abutting against the surface of an annular contact groove is fixedly mounted on the end of the axial telescopic shaft located outside the No. 1 cylindrical hollow body, and a No. 1 coil spring in a compressed state is placed on the other end of the piston plate.

[0008] Preferably, the structural radius of the inner concave surface of the arc-shaped abutment plate is consistent with the structural radius of the annular abutment groove.

[0009] Preferably, the structural shape of the cross section of the No. 1 shaft body through hole is consistent with the structural shape of the cross section of the axial telescopic shaft, both are polygonal structures, and the structural dimensions of the cross section of the No. 1 shaft body through hole match the structural dimensions of the cross section of the axial telescopic shaft.

[0010] Preferably, the synchronous isobaric linkage mechanism includes a No. 3 fixed base, a No. 2 cylindrical hollow body capable of rotation is installed at the center of the No. 3 fixed base through a bearing, one end face of the No. 2 cylindrical hollow body is provided with a No. 2 shaft body fixing groove with an inner concave structure and used for fixing and installing the rotor of the driving motor, a liquid reserved cavity is provided inside the No. 2 cylindrical hollow body, a No. 1 docking channel which is an integral structure with the No. 2 cylindrical hollow body and communicates with the liquid reserved cavity is provided on the outer circumferential surface of the No. 2 cylindrical hollow body, and a No. 1 fixing ring is fixedly installed on the outer circumferential surface of the other end of the No. 2 cylindrical hollow body The outer circumferential surface of the No. 1 fixing ring is provided with a plurality of curved connecting rods in an annular array, and the end of each of the curved connecting rods is provided with a No. 2 fixing ring with an integral structure therewith, and the annular hole of the No. 2 fixing ring is fixedly installed with a No. 1 cylindrical hollow body, and the interiors of the No. 2 cylindrical hollow body, the No. 1 fixing ring, the curved connecting rod and the No. 2 fixing ring are provided with a No. 2 liquid flow hole for connecting the liquid reserved cavity and the No. 1 liquid flow hole, and the circumferential surface of the No. 2 cylindrical hollow body is provided with a liquid compensation channel connecting the external space and the circumferential surface of the liquid reserved cavity and having a liquid valve installed inside.

[0011] Preferably, the axis line of the second fixing ring and the axis line of the first cylindrical hollow body are on the same straight line, and the straight line is perpendicular to the axis line of the rotating drum.

[0012] Preferably, it also includes a liquid pressure control mechanism, which is internally provided with a No. 3 cylindrical hollow body fixedly installed at the end of the No. 1 docking channel, an internal movable valve placed inside the No. 3 cylindrical hollow body and blocking the discharge port of the No. 1 docking channel, and a No. 2 coil spring located inside the No. 3 cylindrical hollow body and producing a damping effect on the movement of the internal movable valve.

[0013] Preferably, the liquid pressure control mechanism includes a No. 3 cylindrical hollow body, the interior of the No. 3 cylindrical hollow body is provided with a No. 2 component active cavity, one end face of the No. 3 cylindrical hollow body is provided with a No. 2 docking channel which is an integral structure therewith and fixedly installed at the end of the No. 1 docking channel, the interior of the No. 2 docking channel is provided with a No. 3 liquid flow hole connecting the internal structure of the No. 1 docking channel and the active cavity of the No. 2 component, the other end of the No. 3 cylindrical hollow body is provided with a No. 4 liquid flow hole connecting the external space and the other end of the active cavity of the No. 2 component, the No. 3 cylindrical hollow body is provided with an inner movable valve capable of axially moving along the active cavity of the No. 2 component, the circumferential surface of the inner movable valve is provided with a plurality of liquid flow grooves with an inner concave structure for liquid flow, one end face of the inner movable valve is embedded with an annular sealing ring, and the other end of the inner movable valve is installed with a No. 2 coil spring in a compressed state.

[0014] Preferably, the structural radius of the inner ring of the annular sealing ring is larger than the structural radius of the No. 3 liquid flow hole, and the structural radius of the outer ring of the annular sealing ring is larger than the distance between the liquid flow groove and the axis of the inner movable valve.

[0015] Preferably, the end surface of the annular sealing ring facing the No. 3 liquid flow hole protrudes outward relative to the embedded end surface of the inner movable valve.

[0016] Compared with the prior art, the present invention provides a winch for water conservancy projects, which has the following beneficial effects:

[0017] It can play the necessary winding function. At the same time, once the torque resistance caused by the lifted object is greater than the maximum static friction between the rotating drum and the arc-shaped contact plate, the drive motor can rotate normally under rated power, and the lifted object will not continue to move, so that the maximum torque resistance of the drive motor can be controlled to prevent the drive motor from being damaged due to overload, thereby improving the protection capability of the drive motor.

[0018] By setting up a resistance-type load control mechanism, when the arc-shaped resistance plate rotates, the circumferential surface of the rotating drum will be driven by the maximum static friction force F1. When the traction force required by the towed object is less than the traction strength formed by the maximum static friction force F1, the rotating drum will drive the winch wheel to rotate to achieve the traction effect. Once the traction force required by the towed object is greater than the traction strength formed by the maximum static friction force F1, the arc-shaped resistance plate will produce relative rotation around the rotating drum, so that the traction force will not continue to increase, and the drive motor can keep running, thereby preventing the drive motor from being overloaded and damaged, thereby improving the protection capability of the drive motor.

[0019] By setting up a synchronous isobaric linkage mechanism, a hydraulic pump is used to inject a constant pressure liquid pressure F2 into the liquid compensation channel. The liquid will enter the active cavity of component No. 1 through the No. 2 liquid flow hole and the No. 1 liquid flow hole, thereby forming pressure on the piston plate. The total pressure on the piston plate comes from the sum of the elastic force F3 of the No. 1 coil spring and the liquid pressure F2. Therefore, changing the liquid pressure F2 can change the total pressure on the piston plate. When the No. 2 cylindrical hollow body rotates with the rotor, it will drive each curved connecting rod to rotate, and then drive each No. 1 cylindrical hollow body to rotate, thereby achieving a force transmission effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of the present invention;

[0021] Figure 2 It is a three-dimensional cross-sectional view of the present invention at a first viewing angle;

[0022] Figure 3 is a three-dimensional cross-sectional view of the present invention at a second viewing angle;

[0023] Figure 4 A three-dimensional diagram of the contact-type load control mechanism of the present invention;

[0024] Figure 5 It is a three-dimensional cross-sectional view of the contact-type load control mechanism of the present invention;

[0025] Figure 6 It is a three-dimensional diagram of the synchronous isobaric linkage mechanism of the present invention;

[0026] Figure 7 It is a three-dimensional cross-sectional view of the synchronous isobaric linkage mechanism of the present invention;

[0027] Figure 8 It is a three-dimensional cross-sectional view of the liquid pressure control mechanism in the present invention.

[0028] Among them: 1. winch wheel; 2. No. 1 rotating shaft; 3. No. 1 fixed base; 4. No. 2 fixed base; 5. driving motor; 6. rotor; 7. contact type load control mechanism; 71. rotating drum; 72. No. 1 shaft body fixing groove; 73. annular contact groove; 74. No. 1 cylindrical hollow body; 75. No. 1 component active cavity; 76. No. 1 shaft body perforation; 77. No. 1 liquid flow hole; 78. piston plate; 79. No. 1 spiral spring; 710. axial telescopic shaft; 711. arc contact plate; 8. synchronous isobaric linkage mechanism; 81. No. 3 fixed base; 82 , No. 2 cylindrical hollow body; 83, No. 2 shaft fixing groove; 84, liquid reserved cavity; 85, No. 1 docking channel; 86, No. 1 fixing ring; 87, curved connecting rod; 88, No. 2 fixing ring; 89, No. 2 liquid flow hole; 810, liquid compensation channel; 9, liquid pressure control mechanism; 91, No. 3 cylindrical hollow body; 92, No. 2 docking channel; 93, No. 2 component movable cavity; 94, No. 3 liquid flow hole; 95, No. 4 liquid flow hole; 96, inner movable valve; 97, annular sealing ring; 98, No. 2 spiral spring; 99, liquid flow groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1 , Figure 2 and Figure 3 A winch for water conservancy projects includes a winch wheel 1 with a No. 1 rotating shaft 2 installed at both ends, a No. 1 fixed base 3 installed on the periphery of the No. 1 rotating shaft 2 through a bearing, and a driving motor 5 fixedly installed in a No. 2 fixed base 4. The No. 1 fixed base 3 and the No. 2 fixed base 4 are fixedly installed on the ground, and the traction direction of the winch wheel 1 needs to be consistent with the actual working direction. When the driving motor 5 is started, the traction wire rope wound in the winch wheel 1 can perform a reel-type traction effect on the towed object.

[0031] In order to utilize friction resistance to produce a detachable linkage effect, thereby improving the protection capability of the drive motor 5, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5, it is necessary to set up a resistance-type control load mechanism 7, which is provided with a rotating drum 71 capable of driving the No. 1 rotating shaft 2 to rotate, a plurality of No. 1 cylindrical hollow bodies 74 located on the periphery of the circumferential surface of the rotating drum 71 and capable of rotating, a piston plate 78 located inside the No. 1 cylindrical hollow body 74 and capable of axial movement along the No. 1 cylindrical hollow body 74, and an arc-shaped resistance plate 711 that resists the circumferential surface of the rotating drum 71 and can drive the rotating drum 71 to rotate. The rotation of the No. 1 cylindrical hollow body 74 will drive the arc-shaped resistance plate 711 to rotate, and under the combined pressure of the liquid pressure and the No. 1 coil spring 79, the arc-shaped resistance plate 711 resists the outer circumferential surface of the rotating drum 71 with a certain force, forming a maximum static Friction force F1, when the arc-shaped contact plate 711 rotates, the circumferential surface of the rotating drum 71 will be driven by the maximum static friction force F1. When the traction force required by the towed object is less than the traction strength formed by the maximum static friction force F1, the rotating drum 71 will drive the winch wheel 1 to rotate to achieve the traction effect. Once the traction force required by the towed object is greater than the traction strength formed by the maximum static friction force F1, the arc-shaped contact plate 711 will produce relative rotation around the rotating drum 71, so that the traction force will not continue to increase, and the driving motor 5 can keep running, thereby preventing the driving motor from being overloaded and damaged, thereby improving the protection capability of the driving motor.

[0032] For the specific structure of the contact type load control mechanism 7, please refer to Figure 4 and Figure 5, including a rotating drum 71 and a plurality of cylindrical hollow bodies 74 arranged in an annular array and located on the periphery of the rotating drum 71, one end surface of the rotating drum 71 is provided with a No. 1 shaft fixing groove 72 with an inner concave structure and used for fixing and installing the No. 1 rotating shaft 2, the circumferential surface of the rotating drum 71 is provided with an annular abutment groove 73 with an inner concave structure, a No. 1 component movable cavity 75 is provided inside the No. 1 cylindrical hollow body 74, one end of the No. 1 component movable cavity 75 is provided with a No. 1 shaft through hole 76 connected to the external space, the other end of the No. 1 component movable cavity 75 is provided with a No. 1 liquid flow hole 77 connected to the outer circumferential surface of the No. 1 cylindrical hollow body 74, and the No. 1 cylindrical hollow body 74 is provided with a piston capable of axially moving along the No. 1 component movable cavity 75 inside the No. 1 component movable cavity 75 Plate 78, the piston plate 78 is fixedly installed with an axial telescopic shaft 710 that passes through the No. 1 shaft body through-hole 76 on one end face facing the No. 1 shaft body through-hole 76, and the axial telescopic shaft 710 is fixedly installed with an arc-shaped contact plate 711 that contacts the surface of the annular contact groove 73 at one end located outside the No. 1 cylindrical hollow body 74, and a No. 1 coil spring 79 in a compressed state is placed on the other end of the piston plate 78, the structural radius of the inner concave surface of the arc-shaped contact plate 711 is consistent with the structural radius of the annular contact groove 73, the structural shape of the cross section of the No. 1 shaft body through-hole 76 is consistent with the structural shape of the cross section of the axial telescopic shaft 710, both are polygonal structures, and the structural dimensions of the cross section of the No. 1 shaft body through-hole 76 match the structural dimensions of the cross section of the axial telescopic shaft 710.

[0033] To use hydraulic pressure to provide the effect of controlling the maximum rotational resistance, refer to Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 , it is necessary to set up a synchronous isobaric linkage mechanism 8, which is provided with a second cylindrical hollow body 82 that can rotate, a curved connecting rod 87 that is fixedly installed on the outer periphery of one end of the second cylindrical hollow body 82 and can drive multiple first cylindrical hollow bodies 74 to rotate, and a second liquid flow hole 89 that can transfer the liquid inside the second cylindrical hollow body 82 to the inside of the first cylindrical hollow body 74. Before working, a hydraulic pump is used to inject a constant pressure liquid pressure F2 into the liquid compensation channel 810, and the liquid will pass through the second liquid The flow hole 89 and the No. 1 liquid flow hole 77 enter the interior of the No. 1 component active chamber 75, thereby forming pressure on the piston plate 78. The total pressure on the piston plate 78 comes from the sum of the elastic force F3 of the No. 1 coil spring 79 and the liquid pressure F2. Therefore, changing the liquid pressure F2 can change the total pressure on the piston plate 78. When the No. 2 cylindrical hollow body 82 rotates with the rotor 6, it will drive each curved connecting rod 87 to rotate, and then drive each No. 1 cylindrical hollow body 74 to rotate, thereby achieving a force transmission effect.

[0034] For the specific structure of the synchronous isobaric linkage mechanism 8, please refer to Figure 6 and Figure 7 , including a No. 3 fixed base 81, the center of the No. 3 fixed base 81 is rotatably mounted with a No. 2 cylindrical hollow body 82 through a bearing, one end surface of the No. 2 cylindrical hollow body 82 is provided with a No. 2 shaft body fixing groove 83 with an inner concave structure and used for fixing and mounting the rotor 6 of the drive motor 5, the interior of the No. 2 cylindrical hollow body 82 is provided with a liquid reserved cavity 84, the outer circumferential surface of the No. 2 cylindrical hollow body 82 is provided with a No. 1 docking channel 85 which is an integral structure with it and communicates with the liquid reserved cavity 84, the outer circumferential surface of the other end of the No. 2 cylindrical hollow body 82 is fixedly mounted with a No. 1 fixing ring 86, the outer circumferential surface of the No. 1 fixing ring 86 is provided with a plurality of annular arrays of curved connecting rods 87, each of the curved connecting rods 87 ... cylindrical hollow bodies 81, and the outer circumferential surface of the No. 2 cylindrical hollow body 82 is provided with a No. 1 fixing ring 86, the outer circumferential surface of the No. 1 fixing ring 86 is provided with a plurality of annular arrays of curved connecting rods 8 The end of the connecting rod 87 is provided with a No. 2 fixing ring 88 of an integral structure therewith, and the ring hole of the No. 2 fixing ring 88 is fixedly installed with the No. 1 cylindrical hollow body 74, and the interiors of the No. 2 cylindrical hollow body 82, the No. 1 fixing ring 86, the curved connecting rod 87 and the No. 2 fixing ring 88 are provided with a No. 2 liquid flow hole 89 for connecting the liquid reserved cavity 84 and the No. 1 liquid flow hole 77, and the circumferential surface of the No. 2 cylindrical hollow body 82 is provided with a liquid compensation channel 810 connecting the external space and the circumferential surface of the liquid reserved cavity 84 and having a liquid valve installed therein, and the axis center line of the No. 2 fixing ring 88 and the axis center line of the No. 1 cylindrical hollow body 74 are on the same straight line, and the straight line is perpendicular to the axis center line of the rotating drum 71.

[0035] To prevent overloading due to excessive liquid pressure, please refer to Figure 1 , Figure 3 and Figure 8 , it is necessary to set up a liquid pressure control mechanism 9, inside which is provided a No. 3 cylindrical hollow body 91 fixedly installed at the end of the No. 1 docking channel 85, an inner movable valve 96 placed inside the No. 3 cylindrical hollow body 91 and blocked at the discharge port of the No. 1 docking channel 85, and a No. 2 coil spring 98 located inside the No. 3 cylindrical hollow body 91 and having a damping effect on the movement of the inner movable valve 96. The liquid entering the No. 1 docking channel 85 will enter the No. 3 liquid flow hole 94, generating a liquid pressure F4 on the inner movable valve 96. When the liquid pressure F4 is greater than the elastic strength of the No. 2 coil spring 98, the inner movable valve 96 will produce a directional displacement. At this time, the excess liquid will be discharged outward through the gap near the inner movable valve 96, the liquid flow groove 99 and the No. 4 liquid flow hole 95. At this time, the surface liquid pressure reaches the upper limit, thereby preventing the injected liquid pressure from being too high and causing overload.

[0036] For the specific structure of the liquid pressure control mechanism 9, please refer to Figure 8, including a No. 3 cylindrical hollow body 91, wherein the interior of the No. 3 cylindrical hollow body 91 is provided with a No. 2 component active cavity 93, and one end surface of the No. 3 cylindrical hollow body 91 is provided with a No. 2 docking channel 92 which is an integral structure with the No. 1 docking channel 85 and fixedly installed at the end of the No. 1 docking channel 85, and the interior of the No. 2 docking channel 92 is provided with a No. 3 liquid flow hole 94 which connects the internal structure of the No. 1 docking channel 85 and the No. 2 component active cavity 93, and the other end of the No. 3 cylindrical hollow body 91 is provided with a No. 4 liquid flow hole 95 which connects the external space and the other end of the No. 2 component active cavity 93, and the No. 3 cylindrical hollow body 91 is provided with a liquid flow hole 95 which can flow along the No. 2 component active cavity 93. 93 an inner movable valve 96 capable of axial movement, the circumferential surface of the inner movable valve 96 being provided with a plurality of concave structures and liquid flow grooves 99 for liquid flow, an annular sealing ring 97 being embedded in one end surface of the inner movable valve 96, a No. 2 coil spring 98 in a compressed state being installed at the other end of the inner movable valve 96, the structural radius of the inner ring of the annular sealing ring 97 being greater than the structural radius of the No. 3 liquid flow hole 94, the structural radius of the outer ring of the annular sealing ring 97 being greater than the distance between the liquid flow grooves 99 and the axis of the inner movable valve 96, the end surface of the annular sealing ring 97 facing the No. 3 liquid flow hole 94 protrudes outwardly relative to the embedded end surface of the inner movable valve 96.

[0037] When in use, the No. 1 fixed base 3 and the No. 2 fixed base 4 are fixedly installed on the ground, and the traction direction of the winch wheel 1 needs to be consistent with the actual working direction. A hydraulic pump is used to inject a constant pressure liquid pressure F2 into the liquid compensation channel 810, and the drive motor 5 is started. The liquid will enter the No. 1 component active cavity 75 through the No. 2 liquid flow hole 89 and the No. 1 liquid flow hole 77, thereby forming pressure on the piston plate 78. The total pressure on the piston plate 78 comes from the sum of the elastic force F3 of the No. 1 coil spring 79 and the liquid pressure F2. Therefore, changing the liquid pressure F2 can change the total pressure on the piston plate 78. When the No. 2 cylindrical hollow body 82 rotates with the rotor 6, it will drive each curved connecting rod 87 to rotate, and then drive each No. 1 cylindrical hollow body 74 to rotate. The rotation of the No. 1 cylindrical hollow body 74 will drive the arc-shaped resistance The contact plate 711 rotates, and under the combined pressure of the liquid pressure and the No. 1 coil spring 79, the arc-shaped contact plate 711 contacts the outer circumferential surface of the rotating drum 71 with a certain force, forming a maximum static friction force F1. When the arc-shaped contact plate 71 rotates, the circumferential surface of the rotating drum 71 will be driven by the maximum static friction force F1. When the traction force required by the towed object is less than the traction strength formed by the maximum static friction force F1, the rotating drum 71 will drive the winch wheel 1 to rotate to achieve the traction effect. Once the traction force required by the towed object is greater than the traction strength formed by the maximum static friction force F1, the arc-shaped contact plate 711 will produce relative rotation around the rotating drum 71, so that the traction force will not continue to increase, and the drive motor 5 can keep running, thereby preventing the drive motor from being overloaded and damaged.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A winch for a hydraulic engineering project, comprising a winch wheel (1) with a first rotating shaft (2) mounted at both ends, a first fixed base (3) mounted on the periphery of the first rotating shaft (2) via a bearing, and a drive motor (5) fixedly mounted in a second fixed base (4), characterized in that: Also includes, A contact-type control load mechanism (7) is provided inside thereof with a rotating drum (71) capable of driving a first rotating shaft (2) to rotate, a plurality of first cylindrical hollow bodies (74) located outside the circumferential surface of the rotating drum (71) and capable of rotating, a piston plate (78) located inside the first cylindrical hollow body (74) and capable of axial movement along the first cylindrical hollow body (74), and an arc-shaped contact plate (711) that contacts the circumferential surface of the rotating drum (71) and can drive the rotating drum (71) to rotate; and a synchronous isobaric linkage mechanism (8), wherein a second cylindrical hollow body (82) is provided inside the mechanism and is capable of rotating along with a rotor (6) of a driving motor (5), a curved connecting rod (87) fixedly mounted on the periphery of one end of the second cylindrical hollow body (82) and capable of driving a plurality of first cylindrical hollow bodies (74) to rotate, and a second liquid flow hole (89) capable of transferring liquid inside the second cylindrical hollow body (82) to inside the first cylindrical hollow body (74).

2. A winch for water conservancy engineering according to claim 1, characterized in that: The abutment-type control load mechanism (7) comprises a rotating drum (71) and a plurality of first cylindrical hollow bodies (74) arranged in an annular array and located on the periphery of the rotating drum (71); one end surface of the rotating drum (71) is provided with a first shaft body fixing groove (72) with an inner concave structure and used for fixing and installing a first rotating shaft (2); the circumferential surface of the rotating drum (71) is provided with an annular abutment groove (73) with an inner concave structure; a first component movable cavity (75) is provided inside the first cylindrical hollow body (74); one end of the first component movable cavity (75) is provided with a first shaft body through hole (76) connected to the external space; the other end of the first component movable cavity (75) is provided with a first shaft body through hole (76) connected to the first cylindrical hollow body (7 4) a No. 1 liquid flow hole (77) on the outer circumferential surface, the No. 1 cylindrical hollow body (74) is provided with a piston plate (78) capable of axially moving along the No. 1 component movable cavity (75) inside the No. 1 component movable cavity (75), the piston plate (78) is fixedly mounted with an axial telescopic shaft (710) passing through the No. 1 shaft body through hole (76) on one end surface facing the No. 1 shaft body through hole (76), the axial telescopic shaft (710) is fixedly mounted with an arc-shaped resistance plate (711) that abuts against the surface of the annular resistance groove (73) at one end located outside the No. 1 cylindrical hollow body (74), and a No. 1 coil spring (79) in a compressed state is placed on the other end of the piston plate (78).

3. A winch for water conservancy engineering according to claim 2, characterized in that: The structural radius of the inner concave surface of the arc-shaped abutment plate (711) is consistent with the structural radius of the annular abutment groove (73).

4. A winch for water conservancy engineering according to claim 3, characterized in that: The structural shape of the cross section of the No. 1 shaft body through hole (76) is consistent with the structural shape of the cross section of the axial telescopic shaft (710), both of which are polygonal structures, and the structural dimensions of the cross section of the No. 1 shaft body through hole (76) match the structural dimensions of the cross section of the axial telescopic shaft (710).

5. A winch for water conservancy engineering according to claim 4, characterized in that: The synchronous isobaric linkage mechanism (8) comprises a third fixed base (81), a second cylindrical hollow body (82) being rotatably mounted at the center of the third fixed base (81) via a bearing, a second shaft body fixing groove (83) having an inner concave structure and being used for fixing and mounting a rotor (6) of a drive motor (5) on one end surface of the second cylindrical hollow body (82), a liquid reserved cavity (84) being arranged inside the second cylindrical hollow body (82), a first docking channel (85) being integrally structured with the second cylindrical hollow body (82) and communicating with the liquid reserved cavity (84) being arranged on the outer circumferential surface of the second cylindrical hollow body (82), a first fixing ring (86) being fixedly mounted on the outer circumferential surface of the other end of the second cylindrical hollow body (82), and the first fixing ring (86) being fixedly mounted on the outer circumferential surface of the second end of the second cylindrical hollow body (82). The outer circumferential surface of the fixed ring (86) is provided with a plurality of curved connecting rods (87) in an annular array, and the end of each of the curved connecting rods (87) is provided with a second fixed ring (88) having an integral structure therewith, and the annular hole of the second fixed ring (88) is fixedly mounted with a first cylindrical hollow body (74), and the interiors of the second cylindrical hollow body (82), the first fixed ring (86), the curved connecting rods (87) and the second fixed ring (88) are provided with a second liquid flow hole (89) for connecting the liquid reserved cavity (84) and the first liquid flow hole (77), and the circumferential surface of the second cylindrical hollow body (82) is provided with a liquid compensation channel (810) which connects the external space and the circumferential surface of the liquid reserved cavity (84) and has a liquid valve installed therein.

6. A winch for water conservancy engineering according to claim 5, characterized in that: The axis center line of the second fixing ring (88) and the axis center line of the first cylindrical hollow body (74) are on the same straight line, and the straight line is perpendicular to the axis center line of the rotating drum (71).

7. A winch for hydraulic engineering according to claim 6, characterized in that: It also includes a liquid pressure control mechanism (9), which is provided with a No. 3 cylindrical hollow body (91) fixedly mounted at the end of the No. 1 docking channel (85), an inner movable valve (96) placed inside the No. 3 cylindrical hollow body (91) and blocking the discharge port of the No. 1 docking channel (85), and a No. 2 coil spring (98) located inside the No. 3 cylindrical hollow body (91) and producing a damping effect on the movement of the inner movable valve (96).

8. A winch for water conservancy engineering according to claim 7, characterized in that: The liquid pressure control mechanism (9) comprises a No. 3 cylindrical hollow body (91), wherein a No. 2 component active cavity (93) is arranged inside the No. 3 cylindrical hollow body (91), and a No. 2 docking channel (92) which is an integral structure with the No. 1 docking channel (85) and fixedly mounted on the end of the No. 1 docking channel (85) is arranged on one end face of the No. 3 cylindrical hollow body (91), and a No. 3 liquid flow hole (94) which communicates with the internal structure of the No. 1 docking channel (85) and the No. 2 component active cavity (93) is arranged inside the No. 2 docking channel (92), and a No. 3 liquid flow hole (94) which communicates with the internal structure of the No. 1 docking channel (85) and the No. 2 component active cavity (93) is arranged at the other end of the No. 3 cylindrical hollow body (91). The third cylindrical hollow body (91) is provided with an inner movable valve (96) capable of axially moving along the movable cavity (93) of the second component, and the inner movable valve (96) is provided with a plurality of concave structures and liquid flow grooves (99) for liquid flow. An annular sealing ring (97) is embedded in one end surface of the inner movable valve (96), and a second coil spring (98) in a compressed state is installed at the other end of the inner movable valve (96).

9. A winch for water conservancy engineering according to claim 8, characterized in that: The structural radius of the inner ring of the annular sealing ring (97) is greater than the structural radius of the third liquid flow hole (94), and the structural radius of the outer ring of the annular sealing ring (97) is greater than the distance between the axis of the liquid flow groove (99) and the inner movable valve (96).

10. A winch for water conservancy engineering according to claim 9, characterized in that: The end surface of the annular sealing ring (97) facing the third liquid flow hole (94) protrudes outward relative to the embedded end surface of the inner movable valve (96).

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