Winch for water conservancy project

Abstract

The hydraulic engineering winch is mainly composed of a base, a driving motor, a speed reduction disc, a gearbox, a rotating shaft, side plates, a winding drum, a fixing block, an electromagnetic speed reduction mechanism, a speed reduction chuck and the like, spiral grooves are formed in the side faces of the sides, close to the winding drum, of the side plates correspondingly, and elastic pressing strips are slidably connected into the spiral grooves; a cavity is formed in the elastic pressing strip, and magnetic fluid accounting for half of the volume of the cavity is contained in the cavity. When the winch is started again after being braked, due to the fact that an electromagnet on the electromagnetic speed reducing mechanism loses magnetism, a magnetic wedge block slides down along a sliding rod under the action of the gravity of the magnetic wedge block, and due to the fact that the magnetic wedge block applies pressure to a triangular clamping block while sliding down, the triangular clamping block drives a speed reducing block to slide; the speed reduction blocks are clamped on the two sides of the speed reduction disc, so that starting resistance of the speed reduction disc is increased, and the situation that the speed reduction disc is seriously abraded due to the fact that the speed reduction disc is only subjected to pulling force of heavy objects during starting is prevented.

Description

Technical Field

[0001] This application relates to the field of winch technology, and more particularly to a winch for hydraulic engineering. Background Art

[0002] Winches are commonly used lifting equipment in hoisting machinery. They can lift heavy objects vertically, horizontally, or at an angle. They are mainly divided into three types: manual winches, electric winches, and hydraulic winches. Due to their simple operation and large rope capacity, they are widely used in material lifting in construction, water conservancy projects, forestry, mining, docks, and ships.

[0003] Winches are mostly used for lifting, mainly to lift heavy objects and then stop them at a designated position by controlling the winch's braking mechanism. Existing winch braking is mainly divided into two types: electromagnetic braking and hydraulic braking. Existing electromagnetic braking controls the magnetization and demagnetization of the electromagnetic armature by energizing and de-energizing the electromagnetic coil, thereby controlling the brake arm to brake and release the brake wheel. However, when the winch starts after braking, the rope and brake disc will be subjected to the tension of the heavy object, which will lead to increased wear on the brake disc. Summary of the Invention

[0004] This application proposes a winch for hydraulic engineering, which has the advantages of preventing the reducer from being subjected to the tension of heavy objects when the winch is started, reducing the wear of the reducer during start-up, increasing the stability of the reducer during braking, combing the already wound cable on the winding drum, squeezing out the water on the cable, and increasing the service life of the cable. It is used to solve the technical problems such as damage to the reducer caused by the tension of heavy objects when the winch is started.

[0005] To achieve the above objectives, this application adopts the following technical solution: a winch for water conservancy projects, including a base, and further comprising:

[0006] A drive motor is fixedly installed on the top surface of the base via a base. An output shaft is fixedly connected to the output end of the drive motor. A speed reducer is fixedly sleeved on the outer surface of the output shaft. A gearbox is fixedly installed on the left side of the top surface of the base. The left end of the output shaft extends into the inside of the gearbox and is fixedly sleeved with the corresponding gear.

[0007] A rotating shaft is fixedly sleeved on the output gear inside the gearbox. The right end of the rotating shaft extends out of the gearbox. The top surface of the base is symmetrically connected to the rotating shaft and a mounting plate is fixedly connected thereto. The rotating shaft passes through two mounting plates and is movably sleeved in the middle of the mounting plates. The outer surface of the rotating shaft is symmetrically located between the two mounting plates and a side plate is fixedly sleeved thereto. A winding drum is fixedly connected between the two side plates and is fixedly sleeved on the outer surface of the rotating shaft.

[0008] The base has two fixed blocks, which are fixedly and symmetrically installed on the top surface of the base and correspond to the speed reducer. An electromagnetic speed reducer is fixedly installed between the two fixed blocks, and the electromagnetic speed reducer is equipped with a speed reducer chuck.

[0009] Furthermore, the side plate includes:

[0010] The spiral grooves are two in number and are formed on the side of the two side plates near the winding drum. An elastic pressure strip is slidably connected in the two spiral grooves.

[0011] Furthermore, the interior of the elastic strip includes:

[0012] A cavity is formed inside the elastic pressure strip, and the cavity is filled with a magnetic fluid that fills half of its volume.

[0013] Furthermore, the interior of the fixing block includes:

[0014] The movable cavity is formed inside the fixed block, and the fixed block is slidably connected to the reduction block at the middle of its side near the reduction disc;

[0015] The fixed block has a hole on its side for the deceleration block to slide, and the side of the deceleration block that contacts the deceleration disk is made of rubber.

[0016] Furthermore, the deceleration block includes:

[0017] A triangular locking block is fixedly connected to the middle part of the side of the reduction block away from the reduction disc;

[0018] The upper and lower sides of the triangular card block are both inclined surfaces.

[0019] Furthermore, the deceleration block also includes:

[0020] A tension spring is fixedly connected to the upper side of the reduction block away from the reduction disc, and the end of the tension spring away from the reduction block is fixedly connected to the side wall of the movable cavity.

[0021] Furthermore, the interior of the movable cavity includes:

[0022] A sliding rod is fixedly connected to the bottom surface of the movable cavity and located on one side of the triangular block. A magnetic wedge is slidably sleeved on the outer surface of the sliding rod.

[0023] The magnetic wedge has inclined surfaces on both the upper and lower sides facing the triangular block, and the inclination is the same as that of the triangular block.

[0024] Furthermore, the magnetic properties of the magnetic wedge are opposite to those of the electromagnet inside the electromagnetic deceleration mechanism, and when the magnetic wedge moves upward to its maximum stroke, it is within the magnetic field range of the magnetic fluid inside the cavity.

[0025] This application provides a hydraulic engineering winch, which incorporates a movable cavity, a reduction block, a triangular locking block, a tension spring, a sliding rod, and a magnetic wedge. Since the winch brakes by clamping the reduction disc with a reduction chuck, when the winch needs to be restarted, the electromagnet on the electromagnetic reduction mechanism loses its magnetism, causing the magnetic wedge to slide down the sliding rod under its own weight. As the magnetic wedge slides down, it applies pressure to the triangular locking block, causing the triangular locking block to slide and lock onto both sides of the reduction disc. This increases the resistance to starting the reduction disc, preventing it from being subjected only to the pulling force of a heavy object during startup, thus avoiding severe wear on the reduction disc.

[0026] Secondly, when the electromagnetic reduction mechanism brakes the reduction disc, the electromagnets on the electromagnetic reduction mechanism become magnetized, causing the magnetic wedge to be attracted by the magnetic force of the electromagnets. This causes the magnetic wedge to slide up the slide bar under the magnetic attraction. As the magnetic wedge slides up, it will pass over the triangular stop block, and then move against the triangular stop block again. This, in turn, drives the reduction block to move, causing the reduction block to press against the side of the reduction disc again, thereby improving the braking effect of the winch and increasing the stability of the winch during braking.

[0027] Secondly, through the design of spiral grooves, elastic pressure bars, and cavities, and by filling half the volume of magnetic fluid inside the cavity, when the winch is winding the cable, the cable is pressed down by the elastic pressure bars due to the obstruction, which promotes the combing of the cable. Moreover, the elastic pressure bars can slide inside the spiral grooves. As the cable is wound, the elastic pressure bars will gradually slide towards the outer circle of the spiral grooves, which can effectively keep the cable neat after winding.

[0028] Meanwhile, because the cavity contains magnetic fluid, when the winch is braked by the electromagnetic reduction mechanism, the magnetic wedge moves upward along the slide bar. The magnetic field of the upward-moving magnetic wedge is exactly in the magnetic field of the magnetic fluid, causing the magnetic fluid to be attracted by the magnetic wedge and placed in the cavity on the side closer to the magnetic wedge. This causes a weight deviation at both ends of the elastic pressure bar, resulting in an angular deflection at both ends of the elastic pressure bar when the winch restarts. This causes the elastic pressure bar to twist and press on the already wound cable, applying pressure to the cable. Since the operation of hydraulic winches inevitably involves water, the compression of the cable by the elastic pressure bar allows the cable to expel water as much as possible, thereby reducing the degree of water corrosion and maximizing the service life of the cable. Attached Figure Description

[0029] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0030] The present disclosure can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the mating structure of the reduction chuck and reduction disc of the present invention;

[0033] Figure 3 This is a schematic diagram of the internal structure of the fixing block of the present invention;

[0034] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0035] Figure 5 This is a schematic diagram of the mating structure of the speed reduction block and the speed reduction disk of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of the side plate of the present invention.

[0037] The components are as follows: 1. Base; 2. Drive motor; 3. Output shaft; 4. Reducer; 5. Gearbox; 6. Rotary shaft; 7. Mounting plate; 8. Side plate; 81. Spiral groove; 82. Elastic pressure strip; 83. Cavity; 9. Rewind drum; 10. Fixing block; 101. Movable cavity; 102. Reducer block; 103. Triangular locking block; 104. Tension spring; 105. Slide rod; 106. Magnetic wedge; 11. Electromagnetic reduction mechanism; 12. Reducer chuck. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0039] Please see Figures 1-6A hydraulic winch includes a base 1. A drive motor 2 is fixedly mounted on the center of the top surface of the base 1 via a base. An output shaft 3 is fixedly welded to the output end of the drive motor 2. A reduction gear 4 is fixedly sleeved on the outer surface of the output shaft 3 for braking the winch. A gearbox 5 is fixedly mounted on the left side of the top surface of the base 1 for increasing or decreasing the transmission ratio, equivalent to a gearbox. The left end of the output shaft 3 extends into the interior of the gearbox 5 and is fixedly sleeved with a corresponding gear. A rotating shaft 6 is fixedly sleeved on the output gear inside the gearbox 5. The right end of the rotating shaft 6 extends out of the gearbox 5. A mounting bracket is symmetrically welded to the top surface of the base 1 at the corresponding position of the rotating shaft 6. Plate 7, shaft 6 passes through two mounting plates 7 and is movably sleeved in the middle of the mounting plates 7. The outer surface of the shaft 6 is symmetrically located between the two mounting plates 7 and is fixedly sleeved with side plates 8. A winding drum 9 is fixedly connected between the two side plates 8 and is fixedly sleeved on the outer surface of the shaft 6. The shaft 6 drives the winding drum 9 to rotate, thereby winding the cable. Fixed blocks 10 are symmetrically fixedly installed on the top surface of the base 1 and at the corresponding position of the speed reducer 4. An electromagnetic speed reduction mechanism 11 is fixedly installed between the two fixed blocks 10. The electromagnetic speed reduction mechanism 11 is provided with a speed reduction chuck 12. When the winch is braked, the speed reduction chuck 12 will lock the speed reducer 4.

[0040] Please see Figures 1-6 Both side plates 8 have spiral grooves 81 on the side near the winding drum 9. Elastic pressure strips 82 are slidably connected in the two spiral grooves 81. The elastic pressure strips 82 can slide inside the spiral grooves 81 to comb the wound cable.

[0041] Please see Figures 1-6 The elastic pressure strip 82 has a cavity 83 inside, and the cavity 83 is filled with a magnetic fluid that fills half of its volume, which is used to control the weight at both ends of the elastic pressure strip 82.

[0042] Please see Figures 1-6 The fixed block 10 has a movable cavity 101 inside, and a speed reduction block 102 is slidably connected to the middle of the side of the fixed block 10 near the speed reduction disc 4.

[0043] The side of the fixed block 10 has a hole for the deceleration block 102 to slide, and the side of the deceleration block 102 that contacts the deceleration disk 4 is made of rubber. The contact between the deceleration block 102 and the deceleration disk 4 increases the resistance when the deceleration disk 4 starts, and the resistance is used to buffer the tension of the heavy object when the deceleration disk 4 starts.

[0044] Please see Figures 1-6 A triangular locking block 103 is fixedly welded to the middle of the side of the deceleration block 102 away from the deceleration disc 4.

[0045] The top and bottom sides of the triangular block 103 are both inclined surfaces.

[0046] Please see Figures 1-6 A tension spring 104 is fixedly welded to the upper side of the deceleration block 102 away from the deceleration disk 4. The end of the tension spring 104 away from the deceleration block 102 is fixedly welded to the side wall of the movable cavity 101, so that the deceleration block 102 can be reset by the potential energy of the tension spring 104 after it moves.

[0047] See also Figures 1-6 A slide rod 105 is fixedly welded to the bottom surface of the movable cavity 101 and to one side of the triangular block 103. A magnetic wedge 106 is slidably sleeved on the outer surface of the slide rod 105.

[0048] The magnetic wedge 106 has inclined surfaces on both the upper and lower sides facing the triangular block 103, and the inclination is the same as that of the triangular block 103. The inclined surfaces of the magnetic wedge 106 drive the triangular block 103 to move, thereby causing the triangular block 103 to drive the deceleration block 102 to move.

[0049] See also Figures 1-6 The magnetic wedge 106 has a magnetic field opposite to that of the electromagnet inside the electromagnetic deceleration mechanism 11. When the magnetic wedge 106 moves up to its maximum stroke, it is within the magnetic field range of the magnetic fluid inside the cavity 83, which facilitates the magnetic wedge 106 to attract the magnetic fluid. This causes the magnetic fluid inside the cavity 83 to gather at one end of the elastic pressure bar 82, thereby causing a weight deviation at both ends of the elastic pressure bar 82.

[0050] See also Figures 1-6 When the operator lifts a heavy object using a winch, the cable is secured and wound around the take-up drum 9, passing through the elastic pressure bar 82 so that the cable is inside the elastic pressure bar 82. Then, the drive motor 2 is turned on. The drive motor 2 drives the gearbox 5 and the gears inside the gearbox 5 to rotate via the output shaft 3. Through the transmission of the gears inside the gearbox 5, the rotating shaft 6 is caused to rotate, which in turn drives the side plate 8 and the take-up drum 9 to rotate, thereby winding the cable and lifting the heavy object. When the heavy object is lifted to the designated position by the winch, the electromagnet in the electromagnetic deceleration mechanism 11 is magnetized, causing the deceleration chuck 12 to lock the deceleration disc 4, thereby achieving the purpose of braking. By using an electromagnet to become magnetized, the magnetic wedge 106 is attracted by the electromagnet and moves upward along the slide bar 105. When the winch starts again, the electromagnet in the electromagnetic deceleration mechanism 11 loses its magnetism, causing the magnetic wedge 106 to slide down under its own weight. At this time, the inclined surface on the magnetic wedge 106 presses against the inclined surface on the triangular block 103, thereby driving the triangular block 103 to slide to the side. Then, the triangular block 103 drives the deceleration block 102 to move, so that the deceleration block 102 is stuck on the side of the deceleration disc 4, thereby increasing the resistance when the deceleration disc 4 starts, effectively preventing the deceleration disc 4 from being only subjected to the pulling force of the heavy object when starting, and slowing down the wear rate of the deceleration disc 4.

[0051] Meanwhile, when the speed reducer 4 is braked by the electromagnetic speed reduction mechanism 11, the electromagnet inside the electromagnetic speed reduction mechanism 11 becomes magnetized and attracts the magnetic wedge 106 to slide upward. When the magnetic wedge 106 slides upward, it will pass over the triangular latch 103. When the magnetic wedge 106 passes over the triangular latch 103, it will move against the triangular latch 103. Similarly, when the triangular latch 103 moves, it will drive the speed reduction block 102 to move, causing the speed reduction block 102 to clamp the speed reducer 4. Since the speed reducer 4 is in the braking process at this time, the braking effect of the speed reducer 4 is improved by the action of the speed reduction block 102, which also increases the stability of the winch during braking.

[0052] Secondly, during normal operation of the winch, as the cable is continuously wound onto the winding drum 9, the elastic pressure bar 82 and the spiral groove 81 cause the continuously wound cable on the winding drum 9 to slide within the spiral groove 81. During this sliding process, the elastic pressure bar 82 presses down on the wound cable, thereby combing the cable and ensuring that the cable wound on the winding drum 9 remains clean.

[0053] Secondly, when the magnetic wedge 106 is attracted by the electromagnet in the electromagnetic deceleration mechanism 11, the magnetic wedge 106 will move upward along the slide rod 105. After moving upward, the magnetic wedge 106 is exactly within the magnetic field range of the magnetic fluid, causing the magnetic fluid inside the cavity 83 to be attracted by the magnetic wedge 106 and thus gather on one side of the cavity 83. This causes a deviation in the weight at both ends of the elastic pressure bar 82. When the winch starts again, due to the deviation in the weight at both ends of the elastic pressure bar 82, the distance at which the two ends of the elastic pressure bar 82 slide in the spiral groove 81 is misaligned, causing the elastic pressure bar 82 to deflect and twist. The twisted elastic pressure bar 82 just presses on the wound cable. At the same time, the pressure generated by the twisting of the elastic pressure bar 82 will directly act on the cable. Since the operation of the hydraulic winch inevitably involves water, the compression of the cable by the elastic pressure bar 82 allows the cable to expel water as much as possible, thereby reducing the degree of water corrosion of the cable and maximizing the service life of the cable.

Claims

1. A hydraulic engineering winch, comprising a base (1), characterized in that: Also includes: A drive motor (2) is fixedly mounted on the middle of the top surface of the base (1) via a base, an output end of the drive motor (2) is fixedly connected to an output shaft (3), a reduction plate (4) is fixedly sleeved on the outer surface of the output shaft (3), a gear box (5) is fixedly mounted on the left side of the top surface of the base (1), and the left end of the output shaft (3) extends into the interior of the gear box (5) and is fixedly sleeved with a corresponding gear; A rotating shaft (6) is fixedly sleeved on the output gear in the gear box (5), the right end of the rotating shaft (6) extends out of the gear box (5), the top surface of the base (1) is symmetrical with the corresponding position of the rotating shaft (6) and is fixedly connected with a mounting plate (7), the rotating shaft (6) passes through the two mounting plates (7) and is movably sleeved on the middle part of the mounting plates (7), the outer surface of the rotating shaft (6) is symmetrically and fixedly sleeved with a side plate (8) between the two mounting plates (7), a winding drum (9) is fixedly connected between the two side plates (8), and the winding drum (9) is fixedly sleeved on the outer surface of the rotating shaft (6); A fixed block (10), wherein the number of the fixed blocks (10) is two, the two fixed blocks (10) are fixedly and symmetrically mounted on the top surface of the base (1) and correspond to the reduction disc (4), an electromagnetic reduction mechanism (11) is fixedly mounted between the two fixed blocks (10), and a reduction chuck (12) is provided on the electromagnetic reduction mechanism (11).

2. A hydraulic engineering winch according to claim 1, characterized in that: The side plate (8) comprises: The spiral groove (81) is two in number and is disposed on the side surfaces of the two side plates (8) close to the winding drum (9). The two spiral grooves (81) are slidably connected with elastic pressure strips (82).

3. A hydraulic engineering winch according to claim 2, characterized in that: The interior of the elastic pressure strip (82) includes: The cavity (83) is opened inside the elastic pressure strip (82), and the cavity (83) is filled with a magnetic fluid with a half volume of the cavity (83).

4. A hydraulic engineering winch according to claim 3, characterized in that: The interior of the fixing block (10) comprises: The movable cavity (101) is arranged inside the fixed block (10), and a speed reduction block (102) is slidably connected to the middle of the side surface of the fixed block (10) close to the speed reduction disc (4); The side surface of the fixed block (10) is provided with a hole for the speed reduction block (102) to slide, and the side surface of the speed reduction block (102) in contact with the speed reduction disc (4) is made of rubber material.

5. A hydraulic engineering winch according to claim 4, characterized in that: The deceleration block (102) comprises: A triangular clamping block (103) is fixedly connected to the middle part of the side surface of the deceleration block (102) away from the deceleration disc (4); The upper and lower side surfaces of the triangular clamping block (103) are both inclined surfaces.

6. A hydraulic engineering winch according to claim 5, characterized in that: The deceleration block (102) further includes: A tension spring (104) is fixedly connected to the upper side of the deceleration block (102) away from the deceleration disc (4), and one end of the tension spring (104) away from the deceleration block (102) is fixedly connected to the side wall of the movable cavity (101).

7. A hydraulic engineering winch according to claim 6, characterized in that: The interior of the active chamber (101) comprises: A sliding rod (105) is fixedly connected to the bottom surface of the movable cavity (101) and is located on one side of the triangular clamping block (103), and a magnetic wedge block (106) is slidably sleeved on the outer surface of the sliding rod (105); The upper and lower side surfaces of the magnetic wedge block (106) facing the triangular clamping block (103) are both inclined surfaces, and the inclination is the same as the inclination of the triangular clamping block (103).

8. A hydraulic engineering winch according to claim 7, characterized in that: The magnetism of the magnetic wedge (106) is opposite to the magnetism of the electromagnet inside the electromagnetic deceleration mechanism (11). When the magnetic wedge (106) moves up to the maximum stroke, the magnetic wedge (106) is within the magnetic field range of the magnetic fluid inside the cavity (83).

Images