Automatic tightening winch

Abstract

The present invention discloses an automatic tightening winch, which relates to the technical field of winches. The technical scheme thereof mainly includes: a mounting frame, a motor, a hoisting drum, a noose wound on the hoisting drum, a traction body arranged on the mounting frame, a movable mechanism and a clamping member arranged on the traction body, the movable mechanism including a roller and a driving member, the roller is rotatably connected in the traction body, the driving member is arranged on the traction body, the noose passes between the roller and the clamping member, and the driving member is used to drive the roller to approach or move away from the clamping member. The motor drives the hoisting drum to rotate to realize the recovery of the noose; when the driving member on the traction body drives the roller to approach the clamping member, the noose is clamped by the clamping member and the roller, the noose between the traction body and the hoisting drum always maintains tension, and the recovered noose can be tightly wound on the hoisting drum, thereby realizing the purpose of being able to more conveniently coil the noose tightly on the hoisting drum.

Description

Technical Field

[0001] The invention relates to the technical field of winches, and in particular to an automatic tightening winch. Background Art

[0002] The winch is mainly used for self-protection and traction of off-road vehicles, agricultural vehicles, yachts and other special vehicles. When traction operations, rescue and field self-rescue are required, the electric winch plays a great role.

[0003] At present, a Chinese patent with the announcement number CN201942458U discloses an electric winch, which includes an air pump, a motor, a reduction device and a hoisting drum, and also includes a transmission mechanism, the input end of the transmission mechanism is connected to the motor output shaft, the output end of the transmission mechanism is located on the side of the motor, and the output end of the transmission mechanism is connected to the air pump input shaft.

[0004] The above technical solution has the following defects: the noose is wrapped around the winch drum, and when the noose is released, the noose detaches from the winch drum and is released gradually. After the noose is used up, the winch drum needs to be driven by a motor to rotate so as to roll the noose back to the winch drum. In order to ensure that the noose can be tightly wound around the winch drum, the user needs to hold the noose and apply pressure to the noose away from the side of the winch drum so that the noose is tensioned. This process brings great inconvenience to the user.

[0005] In the process of the noose being retracted to the winch drum, the noose will not be tightened because the noose has no tension. The noose that is not tightened is directly rolled back onto the winch drum, and the noose is easy to loosen. The noose rolled up in this way is not tight, which seriously affects the service life of the noose. Summary of the invention

[0006] In view of the shortcomings of the prior art, the object of the present invention is to provide an automatic tightening winch, which has the advantage of being able to more conveniently and tightly coil the noose on the winch drum.

[0007] The above technical purpose of the present invention is achieved through the following technical scheme: it includes a mounting frame, a motor arranged on one side of the mounting frame, the motor output shaft passes through the mounting frame and is fixedly connected to a winch drum, a noose is wound around the winch drum, a traction body is arranged on the mounting frame, a movable mechanism and a clamping member are arranged on the traction body, the movable mechanism includes a roller and a driving member, the roller is rotatably connected to the traction body, the driving member is arranged on the traction body, the noose passes between the roller and the clamping member, and the driving member is used to drive the roller to approach or move away from the clamping member.

[0008] Through the above technical scheme, the motor drives the winch drum on the motor output shaft to rotate, so as to realize the recovery of the noose; a traction body is arranged on the mounting frame, and when the driving member on the traction body drives the roller to approach the clamping member, the noose is clamped by the clamping member and the roller, and in the process of the winch drum driving the noose to be recovered, the noose between the traction body and the winch drum always maintains tension, and the recovered noose can be tightly wound on the winch drum, thereby realizing the purpose of being able to more conveniently wind the noose tightly on the winch drum; in the process of the driving member driving the roller away from the clamping member, the gap between the clamping member and the roller increases, and the noose on the winch drum is easier to pass through between the clamping member and the roller, so that the noose can be released from the winch drum.

[0009] Preferably, a bracket is fixedly connected to the mounting frame, and a slide bar is provided on the bracket for the traction body to slide. There are at least two slide bars and both are parallel to the hoisting drum, and the traction body can slide along the axial direction of the slide bar.

[0010] Through the above technical solution, the traction body slides on the slide rod, ensuring that the noose between the traction body and the winch drum can always be perpendicular to the winch drum, so that the noose is not easily entangled in only one position during the process of the winch drum recovering the noose.

[0011] Preferably, the central axis of the roller is parallel to the central axis of the hoisting drum, and a groove for accommodating the peripheral wall of the noose is formed on the peripheral wall of the roller.

[0012] Through the above technical solution, the groove on the roller is used to support the noose, and during the movement of the noose, the noose drives the roller to rotate, ensuring that the noose will not fall off the roller.

[0013] Preferably, the outer wall of the slide rod is provided with a fixing sleeve, the fixing sleeve is fixedly connected to the inside of the traction body, and the fixing sleeve slides on the outer wall of the slide rod.

[0014] Through the above technical solution, the fixed sleeve is fixed to the traction body, and the traction body can drive the fixed sleeve to slide on the outer wall of the slide rod, avoiding direct contact between the traction body and the outer wall of the slide rod. After the slide rod or the fixed sleeve is damaged, only the slide rod or the fixed sleeve needs to be replaced without replacing the entire winch.

[0015] Preferably, the clamping member includes an upper movable wheel and a lower movable wheel, the upper movable wheel and the lower movable wheel are respectively sleeved on the outer walls of the two fixed sleeves, the central axes of the upper movable wheel and the lower movable wheel are parallel to the central axis of the roller, the noose passes between the upper movable wheel and the lower movable wheel, and the noose is located between the roller and one of the movable wheels.

[0016] Through the above technical solution, the noose passes through between the two movable wheels, and the shift block drives the roller to press the noose against the outer wall of the upper movable wheel or the lower movable wheel, so that the noose can be tightly coiled on the winch drum when the winch drum retracts the noose.

[0017] Preferably, movable blocks are symmetrically arranged on both sides of the traction body, a guide hole is opened on the movable block, a guide column is arranged in the guide hole, and the guide column is fixedly connected to the traction body; guide holes are opened on both sides of the traction body, guide columns are slidably connected in the guide holes, the roller is rotatably connected to the guide columns, and the guide columns are fixedly connected to the movable block.

[0018] Through the above technical solution, the driving member drives the movable block to slide along the guide hole 1 and the guide hole 2. During the sliding of the movable block, the guide column 2 and the roller slide with the movable block, thereby changing the distance between the roller and the upper movable wheel or the lower movable wheel.

[0019] Preferably, the driving member includes a shift block and a gas spring, the shift block is hinged to the traction body, and an extrusion section is formed on the shift block, the extrusion section is used to resist the movable block and apply downward pressure to the movable block, the gas spring is arranged between the traction body and the movable block, and the gas spring is used to apply an upward elastic force to the movable block.

[0020] Through the above technical solution, the shift block is hinged to the traction body, and the shift block can more conveniently press the movable block downward through the extrusion section, thereby increasing the distance between the roller and the upper movable wheel, and reducing the distance between the roller and the lower movable wheel; after the limit of the shift block is lost, the gas spring applies an upward elastic force to the movable block, so that the movable block moves upward, thereby reducing the distance between the roller and the upper movable wheel, and increasing the distance between the roller and the lower movable wheel; no matter the noose is located between the roller and the upper movable wheel or between the roller and the lower movable wheel, the noose can be tightened or loosened by adjusting the shift block.

[0021] Preferably, return springs are provided on both sides of the traction body, the return springs are sleeved on the slide rod, one end of the return spring is pressed against the bracket, and the other end of the return spring is pressed against the traction body.

[0022] Through the above technical solution, the return springs on both sides of the traction body can effectively ensure that the traction body slides back and forth at a uniform speed during the sliding process of the traction body.

[0023] Preferably, the mounting frame is provided with a rope guide for evenly winding the noose around the winch drum, the rope guide includes a fixed plate arranged on the mounting frame, a rope guide frame hinged on the fixed plate, a rope guide rod arranged on the rope guide frame and used to support the noose, and a control cylinder fixedly connected to the fixed plate, the rope guide rod is rotatably connected to the rope guide frame, and the control cylinder drives the rope guide rod to be close to the noose on the winch drum.

[0024] Through the above technical solution, the rope guide frame is hinged to the fixed plate, the rope guide rod is rotatably connected to the rope guide frame, and the control cylinder on the fixed plate drives the rope guide frame to move downward, so that the end of the rope guide frame with the rope guide rod is tilted and pressed against the noose on the winch drum, ensuring that the noose on the winch drum is pressed against the winch drum. The rope guide rod is used to support the noose and rotates with the movement of the noose, thereby avoiding excessive wear between the noose and the rope guide rod.

[0025] Preferably, at least two rotating rollers are provided on the traction body, and a limiting space for the rope to pass through is formed between the rotating rollers.

[0026] Through the above technical solution, the limiting space effectively ensures the retraction and release direction of the noose. During the process of retracting and releasing the noose, when the noose hits the rotating roller, the noose will rotate with the rotating roller, thereby avoiding excessive friction between the noose and the rotating roller.

[0027] In summary, compared with the prior art, the beneficial effects of the present invention are as follows: during the process of rope recovery, the rope can be tightly coiled on the winch drum, and the rope recovery effect is good; the friction between the rope and the traction body is small; and it is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the external structure of the embodiment;

[0029] Figure 2 It is a structural schematic diagram of the winding drum in the embodiment;

[0030] Figure 3 This is a schematic diagram of the external structure of the traction body in the embodiment;

[0031] Figure 4 This is a schematic diagram of the internal structure of the traction body in the embodiment;

[0032] Figure 5 It is a structural schematic diagram of one side of the traction body in the embodiment;

[0033] Figure 6 is a schematic structural diagram of a rotating roller in an embodiment;

[0034] Figure 7 An exploded schematic diagram of a traction body in an embodiment;

[0035] Figure 8 is a schematic diagram of the bottom structure of an embodiment;

[0036] Fig. 9 Schematic diagram of the structure of the rope guide in the embodiment.

[0037] 1. Mounting frame; 11. Bracket; 111. Sliding rod; 112. Limiting member; 1111. Fixing sleeve; 2. Motor; 3. Hoisting drum; 4. Noose; 5. Traction body; 51. Movable mechanism; 511. Roller; 5111. Groove; 512. Driving member; 5121. Shifting block; 5122. Gas spring; 5123. Extrusion section; 52. Pressing member; 521. Upper movable wheel; 522. Lower movable wheel; 53. Movable block; 531. Guide hole one; 5311. Guide column one; 54. Guide hole two; 541. Guide column two; 55. Rotating roller; 551. Limiting space; 56. Inner cavity; 6. Reset spring; 7. Rope guide; 71. Fixing plate; 72. Rope guide frame; 73. Rope guide rod; 74. Control cylinder. DETAILED DESCRIPTION

[0038] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0040] An automatic tightening winch, such as Figures 1 to 9 As shown, it includes a mounting frame 1 and a motor 2 arranged on one side of the mounting frame 1. The output shaft of the motor 2 passes through the mounting frame 1 and is fixedly connected to a winch drum 3. The output shaft of the motor 2 can drive the winch drum 3 to rotate, and a noose 4 is wound around the winch drum 3.

[0041] The mounting frame 1 is provided with a traction body 5. Preferably, the mounting frame 1 is fixedly connected with a bracket 11, and the bracket 11 is provided with a slide bar 111. There are at least two slide bars 111, and both are parallel to the hoisting drum 3. The outer wall of the slide bar 111 is provided with a fixing sleeve 1111, and the fixing sleeve 1111 is fixedly connected to the inside of the traction body 5, and the fixing sleeve 1111 slides on the outer wall of the slide bar 111. Preferably, the traction body 5 is fixedly connected to the outer wall of the fixing sleeve 1111, and the traction body 5 can slide along the axial direction of the slide bar 111 following the fixing sleeve 1111. Preferably, the length of the slide rod 111 is equal to the length of the hoisting drum 3. As an alternative, the length of the slide rod 111 is greater than the length of the hoisting drum 3. When the length of the slide rod 111 is greater than the length of the hoisting drum 3, a limit member 112 can be provided on the bracket 11. The limit member 112 includes a bolt. The limit member 112 limits the traction body 5 to ensure that the sliding length of the traction body 5 along the slide rod 111 is equal to the length of the hoisting drum 3, thereby avoiding the traction body 5 from sliding too far, causing the noose 4 to be wound around the two ends of the hoisting drum 3 too many times, thereby causing the noose 4 to not be evenly wound around the hoisting drum 3.

[0042] The interior of the traction body 5 is hollow to form an inner cavity 56, and a movable mechanism 51 and a clamping member 52 are provided on the traction body 5. The movable mechanism 51 includes a roller 511 and a driving member 512. The roller 511 is rotatably connected to the traction body 5, and the central axis of the roller 511 is parallel to the central axis of the winch drum 3. The outer peripheral wall of the roller 511 is recessed to form a groove 5111 for accommodating the outer peripheral wall of the noose 4; the driving member 512 is provided on the traction body 5, and the noose 4 passes between the roller 511 and the clamping member 52, and the driving member 512 is used to drive the roller 511 to approach or move away from the clamping member 52.

[0043] The clamping member 52 includes an upper movable wheel 521 and a lower movable wheel 522. The upper movable wheel 521 and the lower movable wheel 522 are both cylindrical. The upper movable wheel 521 and the lower movable wheel 522 are respectively sleeved on the outer walls of the two fixed sleeves 1111. The central axes of the upper movable wheel 521 and the lower movable wheel 522 are parallel to the central axis of the roller 511. The noose 4 passes between the upper movable wheel 521 and the lower movable wheel 522, and the noose 4 is located between the roller 511 and one of the movable wheels. When the noose 4 is located between the roller 511 and the upper movable wheel 521, the driving member 512 drives the roller 511 to move upward to compress the noose 4, and the motor 2 drives the hoisting drum 3 to recycle the noose 4, and the recovered noose 4 can be tightly coiled on the hoisting drum 3; when the noose 4 is located between the roller 511 and the lower movable wheel 522, the driving member 512 drives the roller 511 to move downward to compress the noose 4, and the motor 2 drives the hoisting drum 3 to rotate, and the noose 4 can be tightly coiled on the hoisting drum 3 after being recovered.

[0044] Movable blocks 53 are symmetrically arranged on both sides of the traction body 5, and a guide hole 531 is opened on the movable block 53, and a guide column 5311 is arranged in the guide hole 531, and the guide column 5311 is fixedly connected to the traction body 5. Preferably, the guide column 5311 includes a bolt, and the guide column 5311 is bolted to the side wall of the traction body 5; a guide hole 54 is opened on both sides of the traction body 5, and preferably, the guide hole 54 includes a waist-shaped hole, and a guide column 541 is slidably connected in the guide hole 54, the roller 511 is rotatably connected to the guide column 541, and the guide column 541 is fixedly connected to the movable block 53, and preferably, the guide column 541 is screwed fixed between the two movable blocks 53.

[0045] The driving member 512 includes a shift block 5121 and a gas spring 5122. The shift block 5121 is hinged to the upper end of the traction body 5, and an arc-shaped extrusion section 5123 is formed on the shift block 5121. The extrusion section 5123 is used to resist the movable block 53 and apply downward pressure to the movable block 53. The gas spring 5122 is arranged between the traction body 5 and the movable block 53. Preferably, one end of the gas spring 5122 is threadedly connected to the movable block 53, and the other end of the gas spring 5122 is threadedly connected to the side wall of the traction body 5, and the gas spring 5122 is used to apply an upward elastic force to the movable block 53.

[0046] A return spring 6 is provided on both sides of the traction body 5. The return spring 6 is sleeved on the slide bar 111, and one end of the return spring 6 is pressed against the bracket 11, and the other end of the return spring 6 is pressed against the traction body 5. At least two rotating rollers 55 are provided on the traction body 5, and a limiting space 551 for the rope 4 to pass through is formed between the rotating rollers 55, and the rotating rollers 55 are arranged on the side away from the roller 511.

[0047] The mounting frame 1 is also provided with a rope guide 7, which is used to evenly wind the noose 4 around the hoisting drum 3. The rope guide 7 includes a fixed plate 71 fixed on the mounting frame 1, a rope guide frame 72 hinged on the fixed plate 71, a rope guide rod 73 arranged on the rope guide frame 72, and a control cylinder 74 arranged on the fixed plate 71. The rope guide rod 73 is rotatably connected to the rope guide frame 72, and the rope guide rod 73 is arranged away from the fixed plate 71 to ensure that the noose 4 slides on the outer peripheral wall of the rope guide rod 73 during the process of retracting and releasing the noose 4. The rope guide frame 72 is located below the hoisting drum 3, the output shaft of the control cylinder 74 is connected to the rope guide frame 72, and the control cylinder 74 applies a downward force to the rope guide frame 72, and the end of the rope guide frame 72 with the rope guide rod 73 is tilted upward, so that the outer peripheral wall of the rope guide rod 73 is close to the noose 4 on the hoisting drum 3, ensuring that the noose 4 can be wound around the hoisting drum 3 in sequence during the process of retracting the noose 4.

[0048] A specific working method of an automatic tightening winch:

[0049] The rope end of the noose 4 is led out from the winch drum 3, and the noose 4 is passed through the top of the guide rope rod 73, and the noose 4 is supported by the guide rope rod 73. At this time, the shift block 5121 is lifted, so that the shift block 5121 drives the movable block 53 to move downward, and the noose 4 passes between the roller 511 and the upper movable wheel 521, and the noose 4 is placed in the groove 5111 on the roller 511, and then the noose 4 passes between the upper movable wheel 521 and the lower movable wheel 522, and the noose 4 is supported by the lower movable wheel 522, and finally the noose 4 passes through the limited space 551 between the two rotating rollers 55. In the process of the noose 4 leaving the winch drum 3, it hits the rotating roller 55, and the rotating roller 55 will rotate with the movement direction of the noose 4.

[0050] After the noose 4 is used, the output shaft of the motor 2 drives the winch drum 3 to rotate, so that the noose 4 is recovered; the control cylinder 74 always applies a downward force to the guide rope frame 72, so that the end of the guide rope frame 72 with the guide rope rod 73 is tilted and pressed against the noose 4 coiled on the surface of the winch drum 3, ensuring that the recovered noose 4 is coiled on the surface of the winch drum 3 in an orderly and uniform manner. Before the noose 4 is recovered, the shift block 5121 is pressed down, so that the gas spring 5122 acts on the movable block 53, and the movable block 53 drives the roller 511 to move toward the upper movable wheel 521, and finally the noose 4 between the roller 511 and the upper movable wheel 521 is compressed, and at this time the noose 4 between the traction body 5 and the winch drum 3 will be taut, and after the motor 2 works, the winch drum 3 recovers the noose 4, and because the guide rope rod 73 is pressed against the noose 4 coiled on the surface of the winch drum 3, the noose 4 recovered by the winch drum 3 will be arranged on the surface of the winch drum 3 one after another. , the noose 4 will drive the traction body 5 to slide along the direction of the slide bar 111, and the elastic force of the return springs 6 on both sides of the traction body 5 acts on the traction body 5 to ensure that the traction body 5 slides uniformly on the peripheral wall of the slide bar 111. After the traction body 5 slides to the end of the slide bar 111, the side wall of the traction body 5 with the movable block 53 will contact the bracket 11 or the limit piece 112, and the traction body 5 starts to slide back. During this process, the noose 4 is always perpendicular to the winch drum 3, and the recovered noose 4 can be tightened and evenly coiled on the surface of the winch drum 3.

[0051] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. An automatic tightening winch, comprising a mounting frame (1), a motor (2) arranged on one side of the mounting frame (1), an output shaft of the motor (2) passing through the mounting frame (1) and fixedly connected to a hoisting drum (3), a noose (4) being wound around the hoisting drum (3), wherein: A traction body (5) is arranged on the mounting frame (1), and a movable mechanism (51) and a pressing member (52) are arranged on the traction body (5), the movable mechanism (51) comprises a roller (511) and a driving member (512), the roller (511) is rotatably connected to the traction body (5), the driving member (512) is arranged on the traction body (5), the noose (4) passes between the roller (511) and the pressing member (52), and the driving member (512) is used to drive the roller (511) to approach or move away from the pressing member (52); The mounting frame (1) is fixedly connected to a bracket (11), the bracket (11) is provided with a slide bar (111) for the traction body (5) to slide, at least two slide bars (111) are provided and are parallel to the hoisting drum (3), and the traction body (5) can slide along the axial direction of the slide bar (111); The traction body (5) is symmetrically provided with movable blocks (53) on both sides, and the movable blocks (53) are provided with a guide hole (531), and a guide column (5311) is provided in the guide hole (531), and the guide column (5311) is fixedly connected to the traction body (5); the traction body (5) is provided with a guide hole (54) on both sides, and a guide column (541) is slidably connected in the guide hole (54), and the roller (511) is rotatably connected to the guide column (541), and the guide column (541) is fixedly connected to the movable block (53); The driving member (512) comprises a shifting block (5121) and a gas spring (5122); the shifting block (5121) is hinged to the traction body (5), and a pressing section (5123) is formed on the shifting block (5121); the pressing section (5123) is used to resist the movable block (53) and apply downward pressure to the movable block (53); the gas spring (5122) is arranged between the traction body (5) and the movable block (53), and the gas spring (5122) is used to apply an upward elastic force to the movable block (53).

2. The automatic tightening winch according to claim 1, characterized in that: The central axis of the roller (511) is parallel to the central axis of the hoisting drum (3), and a groove (5111) is formed on the outer peripheral wall of the roller (511) for accommodating the outer peripheral wall of the rope (4).

3. The automatic tightening winch according to claim 1, characterized in that: The outer wall of the sliding rod (111) is provided with a fixing sleeve (1111), the fixing sleeve (1111) is fixedly connected to the inside of the traction body (5), and the fixing sleeve (1111) slides on the outer wall of the sliding rod (111).

4. The automatic tightening winch according to claim 3 is characterized in that: The clamping member (52) comprises an upper movable wheel (521) and a lower movable wheel (522), the upper movable wheel (521) and the lower movable wheel (522) being respectively sleeved on the outer walls of the two fixed sleeves (1111), the central axes of the upper movable wheel (521) and the lower movable wheel (522) being parallel to the central axis of the roller (511), the noose (4) passing between the upper movable wheel (521) and the lower movable wheel (522), and the noose (4) being located between the roller (511) and one of the movable wheels.

5. The automatic tightening winch according to claim 1, characterized in that: A return spring (6) is provided on both sides of the traction body (5). The return spring (6) is sleeved on the slide rod (111), and one end of the return spring (6) is pressed against the bracket (11), and the other end of the return spring (6) is pressed against the traction body (5).

6. An automatic tightening winch according to any one of claims 1 to 5, characterized in that: The mounting frame (1) is provided with a rope guide (7) for evenly winding the noose (4) around the hoisting drum (3). The rope guide (7) comprises a fixed plate (71) arranged on the mounting frame (1), a rope guide frame (72) hinged on the fixed plate (71), a rope guide rod (73) arranged on the rope guide frame (72) and used to support the noose (4), and a control cylinder (74) fixedly connected to the fixed plate (71). The rope guide rod (73) is rotatably connected to the rope guide frame (72), and the control cylinder (74) drives the rope guide rod (73) to be close to the noose (4) on the hoisting drum (3).

7. An automatic tightening winch according to any one of claims 1 to 5, characterized in that: At least two rotating rollers (55) are arranged on the traction body (5), and a limiting space (551) for the rope (4) to pass through is formed between the rotating rollers (55).

Images