Double-brake capstan structure

Abstract

The utility model discloses a double-brake capstan structure which comprises a base, a reel and a main shaft are rotatably connected onto the base, a transmission gear meshed with the reel is sleeved on the main shaft, a rocker arm is further arranged on the main shaft, the rocker arm can drive the main shaft to rotate, and the main shaft drives the reel to rotate through the transmission gear. The base is provided with a first one-way lock plate used for limiting anticlockwise rotation of the braking gear disc, and the base is further provided with a second one-way lock plate used for limiting anticlockwise rotation of the transmission gear. And a second one-way lock plate is arranged at the transmission gear and used for braking, double braking and double safety guarantee are achieved, and using is safer.

Description

TECHNICAL FIELD

[0001] The utility model relates to a capstan especially a double-brake capstan structure. BACKGROUND

[0002] The manual capstan is also called hand-operated capstan, which is a hoisting tool suitable for many places, and can be used for self-rescue of vehicles in snow, marsh, desert, beach, muddy mountain road and other harsh environments, and can be used for operations such as obstacle removal, dragging of articles, installation of facilities and the like under other conditions, and is an indispensable safety device for military police, petroleum, hydrology, environmental protection, forestry, transportation, public security, border defense, fire fighting and other outdoor sports.

[0003] A novel manual capstan disclosed in the publication No. CN215666865U relates to the technical field of capstans, and comprises a fixed frame, a rotating shaft rotatably connected to the fixed frame, a driving gear fixedly sleeved on the rotating shaft, a driven gear meshed with one side of the driving gear, a winding frame fixedly connected to one side of the driven gear, the winding frame being rotatably connected to the fixed frame, a rotating handle fixedly connected to one end of the rotating shaft, a handle fixedly connected to the rotating handle, and a guide mechanism comprising a reciprocating screw rod rotatably connected to the fixed frame and a winding gear fixedly sleeved on the reciprocating screw rod.

[0004] In the structure of the above-mentioned manual capstan, a pawl is meshed with one side of a ratchet wheel, and the ratchet wheel and the pawl are provided to play a guiding and limiting role when the winding rope is wound. In the existing manual capstan, only the above-mentioned pawl is provided as a braking device. In long-term use, the pawl may fail or be worn out, so that the pawl cannot play a limiting role, which may lead to unpredictable consequences and certain safety hazards. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem of providing a double-brake capstan structure which is safer to use.

[0006] The utility model adopts the technical scheme that the double-brake capstan structure comprises a base, a winding reel and a main shaft are rotatably connected to the base, a transmission gear meshed with the winding reel is sleeved on the main shaft, a rocker arm is further arranged on the main shaft, the rocker arm can drive the main shaft to rotate, the main shaft drives the winding reel to rotate through the transmission gear, a brake gear disc is further sleeved on the main shaft, a first one-way lock plate for limiting counterclockwise rotation of the brake gear disc is arranged on the base, and a second one-way lock plate for limiting counterclockwise rotation of the transmission gear is further arranged on the base.

[0007] The further preferred scheme of the utility model discloses: first unidirectional lock plate rotation is connected on the base, first unidirectional lock plate and the base between being provided with first torsional spring, first torsional spring always gives first unidirectional lock plate a force that is clamped into the tooth slot of brake gear disc.

[0008] The further preferred scheme of the utility model discloses: second unidirectional lock plate rotation is connected on the base, second unidirectional lock plate and the base between being provided with second torsional spring, second torsional spring always gives second unidirectional lock plate a force that is clamped into the tooth slot of transmission gear.

[0009] The further preferred scheme of the utility model discloses: the press part that is set up on second unidirectional lock plate extends, and the press part is pressed to drive second unidirectional lock plate to rotate and make second unidirectional lock plate and transmission gear disengage.

[0010] The further preferred scheme of the utility model discloses: two brake pads are sleeved on the main shaft, and the two brake pads are located at the two sides of the brake gear disc, the main shaft can drive transmission gear to move and make the two brake pads clamp the brake gear disc.

[0011] The further preferred scheme of the utility model discloses: the outer tooth part is set up on the main shaft, the inner tooth part that is engaged with the outer tooth part is set up on the inner wall of transmission gear, and the main shaft is driven to rotate by rocker arm and can drive transmission gear to move along the axis direction of main shaft.

[0012] The further preferred scheme of the utility model discloses: two extrusion pieces are also sleeved on the main shaft, and the two extrusion pieces are located at the outer side of the two brake pads.

[0013] The further preferred scheme of the utility model discloses: after the main shaft rotates clockwise, the main shaft drives transmission gear to move towards brake gear disc direction by the cooperation of inner tooth part and outer tooth part, makes transmission gear extrude brake pad, at this moment, the main shaft can drive transmission gear to rotate clockwise, and transmission gear drives the reel to rotate, simultaneously, the two brake pads clamp brake gear disc and make the main shaft also drive brake gear disc to rotate clockwise.

[0014] The further preferred scheme of the utility model discloses: the stop rod is set up on the main shaft, after the main shaft rotates counterclockwise, the main shaft drives transmission gear to move away from brake gear disc direction and stops on the stop rod, at this moment, the main shaft can drive transmission gear to rotate counterclockwise, and transmission gear drives the reel to rotate, and transmission gear and brake pad disengage extrusion, and brake gear disc does not rotate counterclockwise with the main shaft.

[0015] Compared with the prior art, the base is provided with the first one-way lock plate for limiting the counterclockwise rotation of the brake gear disc and the second one-way lock plate for limiting the counterclockwise rotation of the transmission gear, the first one-way lock plate is arranged at the brake gear disc for braking, the second one-way lock plate is arranged at the transmission gear for braking, double braking is realized, double safety guarantee is realized, and the use is safer. BRIEF DESCRIPTION OF DRAWINGS

[0016] The preferred embodiments of the present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments and thus should not be construed as limiting the scope of the present application. In addition, unless specifically indicated, the drawings only schematically represent the composition or configuration of the described objects and can include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0017] Figure 1 Structure diagram of the preferred embodiment of the present application Figure One ;

[0018] Figure 2 Structure diagram of the preferred embodiment of the present application Figure Two ;

[0019] Figure 3 Exploded view of Figure 1 ;

[0020] Figure 4 Sectional view of Figure 1 .

[0021] In the drawings: 1, base; 11, first one-way lock plate; 12, first torsion spring; 13, second one-way lock plate; 14, second torsion spring; 15, pressing portion; 2, winding wheel; 21, gear; 3, main shaft; 31, outer tooth portion; 32, blocking rod; 33, step; 4, transmission gear; 41, inner tooth portion; 5, rocker arm; 6, brake gear disc; 7, brake pad; 8, extrusion piece. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments and thus should not be construed as limiting the scope of the present application. In addition, unless specifically indicated, the drawings only schematically represent the composition or configuration of the described objects and can include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0023] It should be noted that: similar reference numerals represent similar items in the following drawings, and thus, once an item is defined in one drawing, it can not be further defined and explained in subsequent drawings.

[0024] The double brake capstan structure comprises a base 1, a winding wheel 2 and a main shaft 3 are rotatably connected on the base 1, a pull rope is wound on the winding wheel 2 and is used for winding the pull rope, a gear 21 is arranged on the winding wheel 2, a transmission gear 4 is sleeved on the main shaft 3 and is engaged with the gear 21, a rocker arm 5 is further arranged on the main shaft 3, the rocker arm 5 can drive the main shaft 3 to rotate, and the main shaft 3 drives the winding wheel 2 to rotate through the cooperation of the transmission gear 4 and the gear 21.

[0025] A brake gear disc 6 is further sleeved on the main shaft 3, two brake pads 7 are sleeved on the main shaft 3 and are located on the two sides of the brake gear disc 6, and two extrusion pieces 8 are further sleeved on the main shaft 3 and are located on the outer sides of the two brake pads 7, the two brake pads 7 clamp the brake gear disc 6 by moving the two extrusion pieces 8 towards each other.

[0026] An outer tooth part 31 is arranged on the main shaft 3, an inner tooth part 41 is arranged in the transmission gear 4, the main shaft 3 drives the transmission gear 4 to move along the axis direction of the main shaft 3 through the cooperation of the outer tooth part 31 and the inner tooth part 41 after rotating, a stop rod 32 is arranged on the main shaft 3 and is used for limiting the movement of the transmission gear 4, that is, the transmission gear 4 can move between the stop rod 32 and one of the extrusion pieces 8.

[0027] After the rocker arm 5 drives the main shaft 3 to rotate clockwise, the main shaft 3 drives the transmission gear 4 to move towards the brake gear disc 6, so that the transmission gear 4 pushes one of the extrusion pieces 8, a step 33 is arranged on the main shaft 3, the other extrusion piece 8 is located on the step 33, so that the two extrusion pieces 8 extrude the brake pad 7, and the two brake pads 7 clamp the brake gear disc 6, at this time, the transmission gear 4 cannot move after being pressed on the extrusion piece 8, and will rotate clockwise along with the main shaft 3, the transmission gear 4 drives the winding wheel 2 to rotate counterclockwise, and at the same time, the two brake pads 7 clamp the brake gear disc 6, so that the main shaft 3 can also drive the brake gear disc 6 to rotate clockwise.

[0028] After the rocker arm 5 drives the main shaft 3 to rotate counterclockwise, the main shaft 3 drives the transmission gear 4 to move away from the brake gear disc 6 and is located on the stop rod 32, at this time, the transmission gear 4 stops moving after being pressed on the stop rod 32, and rotates counterclockwise along with the main shaft 3, the transmission gear 4 drives the winding wheel 2 to rotate clockwise, and the transmission gear 4 is separated from the extrusion of the brake pad 7, so that the brake gear disc 6 cannot rotate counterclockwise along with the main shaft 3.

[0029] A first one-way lock plate 11 is arranged on the base 1 and is used for limiting the counterclockwise rotation of the brake gear disc 6, after the pull rope hoists the weight, the first one-way lock plate 11 clamps the brake gear disc 6 so that it cannot rotate, preventing the weight from falling after the rocker arm is loosened.

[0030] The first one-way lock plate 11 is rotationally connected to the base 1, and a first torsion spring 12 is arranged between the first one-way lock plate 11 and the base 1, which always gives the first one-way lock plate 11 a force to be clamped into the tooth groove of the brake gear disc 6.

[0031] The base 1 is further provided with a second one-way lock plate 13, which is used to limit the counterclockwise rotation of the transmission gear 4.

[0032] The second one-way lock plate 13 is rotationally connected to the base 1, and a second torsion spring 14 is arranged between the second one-way lock plate 13 and the base 1, which always gives the second one-way lock plate 13 a force to be clamped into the tooth groove of the transmission gear 4.

[0033] Further, the second one-way lock plate 13 is provided with a pressing portion 15 extending therefrom, and the second one-way lock plate 13 is disengaged from the transmission gear 4 by pressing the pressing portion 15 to drive the second one-way lock plate 13 to rotate.

[0034] When the heavy object needs to be lifted, the swing arm 5 is rotated clockwise, the swing arm drives the main shaft 3 to rotate clockwise, the main shaft 3 first drives the transmission gear 4 to move towards the brake gear disc 6, and after the transmission gear 4 abuts against the pressing piece 8, the transmission gear 4 cannot move and rotates clockwise together with the main shaft 3, thereby driving the winding wheel 2 to rotate and winding the pull rope on the winding wheel 2 to lift the heavy object. Under the action of the second torsion spring 14, the second one-way lock plate 13 is clamped into the tooth groove of the transmission gear 4 step by step, at the same time, the transmission gear 4 drives the pressing piece 8 to clamp the brake pad 7 and the brake gear disc 6, the brake gear disc 6 rotates together with the main shaft 3, and under the action of the first torsion spring 12, the first one-way lock plate 11 is clamped into the tooth groove of the brake gear disc 6 step by step. After the heavy object is fished to the desired position, the swing arm 5 stops rotating, the first one-way lock plate 11 clamps the brake gear disc 6 so that it cannot rotate counterclockwise, the heavy object is suspended at the specified position, and the second one-way lock plate 13 also clamps the transmission gear 4 so that the transmission gear 4 cannot rotate counterclockwise, double locking and double protection, preventing the first one-way lock plate 11 from malfunctioning and causing the heavy object to fall, and the use is safer.

[0035] When the heavy object needs to be lowered, the second one-way lock plate 13 needs to be pressed by fingers first, so that the second one-way lock plate 13 is separated from the clamping of the transmission gear 4, the transmission arm 5 is counterclockwise driven, the main shaft 1 is counterclockwise driven by the transmission arm 5, the main shaft 1 first drives the transmission gear 4 to move away from the brake gear disc 6, the transmission gear 4 is separated from the extrusion of the extrusion piece 8, the brake pad 7 is no longer clamped with the brake gear disc 6, the brake gear disc 6 is separated from the main shaft 3, the brake gear disc 6 cannot rotate with the main shaft 3, until the transmission gear 4 is abutted against the stop rod 32, the transmission gear 4 cannot continue to move, and the transmission gear 4 rotates counterclockwise with the main shaft 3, the transmission gear 4 drives the winding wheel 2 to rotate clockwise, the pull rope is released, and the heavy object is lowered.

[0036] When the heavy object is suddenly stopped from being lowered, the pull rope is pulled by the heavy object, the winding wheel 2 is counterclockwise driven, the transmission gear 4 is clockwise driven by the winding wheel 2, the transmission gear 4 is moved towards the brake gear disc 6, the transmission gear 4 extrudes the extrusion piece 8, and the brake pad 7 clamps the brake gear disc 6, at this moment, the first one-way lock plate 11 clamps the brake gear disc 6, the main shaft 3 is locked and cannot rotate, the heavy object cannot continue to be lowered, safety is ensured, meanwhile, the second one-way lock plate 13 is released, the second one-way lock plate 13 also clamps the transmission gear 4, so that the transmission gear 4 cannot rotate, and double locking is achieved, so that the use is safer.

[0037] In the description of the utility model, it should be explained that the terms "upper", "lower", "front", "rear", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0038] The structure of the double-brake capstan provided by the utility model is described in detail above, the principle and implementation mode of the utility model are described by applying specific examples in this paper, and the description of the above examples is only used to help understand the utility model and the core idea. It should be pointed out that, for ordinary skilled persons in the technical field, the utility model can be improved and modified in many ways without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claims.

Claims

1. A double brake capstan structure, comprising a base, a winding wheel and a main shaft rotatably connected on the base, a transmission gear engaged with the winding wheel being sleeved on the main shaft, a rocker being further arranged on the main shaft, the rocker being capable of driving the main shaft to rotate, and the main shaft driving the winding wheel to rotate through the transmission gear, characterized in that: The main shaft is further sleeved with a brake gear disc, the base is provided with a first one-way lock plate for limiting counterclockwise rotation of the brake gear disc, and the base is further provided with a second one-way lock plate for limiting counterclockwise rotation of the transmission gear. ​ 2. A dual brake capstan structure according to claim 1, characterised in that: The first one-way lock plate is rotationally connected to the base, and a first torsion spring is arranged between the first one-way lock plate and the base, which always gives the first one-way lock plate a force for clamping into a tooth groove of the brake gear disc.

3. The dual brake capstan structure of claim 1, wherein: The second one-way lock plate is rotationally connected to the base, and a second torsion spring is arranged between the second one-way lock plate and the base, which always gives the second one-way lock plate a force for clamping into a tooth groove of the transmission gear.

4. The dual brake capstan structure of claim 1, wherein: The second one-way lock plate is provided with a pressing portion extending therefrom, and the second one-way lock plate is disengaged from the transmission gear by pressing the pressing portion to drive the second one-way lock plate to rotate.

5. The dual brake capstan structure of claim 1, wherein: The main shaft is sleeved with two brake pads, and the two brake pads are located on both sides of the brake gear disc, respectively.

6. A dual brake capstan arrangement according to claim 5, characterised in that: The main shaft is provided with an outer tooth portion, and an inner tooth portion is arranged on an inner wall of the transmission gear and engages with the outer tooth portion, and the rocker arm drives the main shaft to rotate to drive the transmission gear to move along the axis of the main shaft.

7. The dual brake capstan structure of claim 5, wherein: The main shaft is further sleeved with two extrusion pieces, and the two extrusion pieces are located on the outer sides of the two brake pads, respectively.

8. A dual brake capstan structure according to claim 6, characterised in that: After the main shaft rotates clockwise, the main shaft drives the transmission gear to move towards the brake gear disc through cooperation of the inner tooth portion and the outer tooth portion, so that the transmission gear extrudes the brake pad, at this time, the main shaft can drive the transmission gear to rotate clockwise, the transmission gear drives the winding wheel to rotate, and at the same time, the two brake pads clamp the brake gear disc to make the main shaft also drive the brake gear disc to rotate clockwise.

9. A dual brake capstan structure according to claim 8, characterised in that: The main shaft is provided with a stop rod, and after the main shaft rotates counterclockwise, the main shaft drives the transmission gear to move away from the brake gear disc and abuts against the stop rod, at this time, the main shaft can drive the transmission gear to rotate counterclockwise, the transmission gear drives the winding wheel to rotate, and the transmission gear is disengaged from the extrusion of the brake pad.

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