Clutch and brake mechanism of winch

Abstract

The utility model relates to the technical field of engineering machinery, and particularly discloses a clutch and brake mechanism of a winch, which comprises a rack, a winding drum, a clutch mechanism and a brake mechanism, a taper clutch device is arranged on the winding drum, and the clutch mechanism comprises a clutch driving part, a clutch pull arm, a winding drum pull arm and a pushing shaft sleeve assembly. One end of the clutch pull arm is rotationally connected with the clutch driving part, and the other end of the clutch pull arm is connected with the winding drum pull arm through a first connecting rod. The brake mechanism comprises a brake part, a brake pull arm, a brake pull plate and a brake band. According to the clutch and brake mechanism, the taper clutch device composed of the conical clutch sleeve and the conical clutch block which are matched with each other is adopted, the separation spring is arranged between the conical clutch sleeve and the conical clutch block, and clutch of the winding drum is effectively achieved; the clutch pulling arm is pulled by the clutch manipulator, the clutch pulling arm is connected with the winding drum pulling arm through the connecting rod, the form of the connecting rod is adjusted through the adjusting nut, and the preset force for pulling and releasing the clutch can be adjusted according to the sizes of different hammers.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering machinery technical field especially relates to a winch clutch and brake mechanism. BACKGROUND

[0002] The winch, also called the winch, is a small lifting equipment that uses a drum to wind a steel wire rope or chain to lift or pull heavy objects. It can vertically lift, horizontally or obliquely pull heavy objects. The current winch is mostly electric winch, which can be used alone or as a component part in hoisting, road building and mine lifting machinery. It is widely used because of its simple operation, large winding capacity and easy movement.

[0003] When the winch is applied to impact equipment, it mainly uses the winch to repeatedly lift the impact hammer to achieve impact. In the prior art, there are some defects when using the cylinder pneumatic method to clutch the winch: because the air compressor has the characteristics of high-pressure automatic stop and low-pressure automatic start, the clutch mechanism of the winch is easy to slip (the hammer cannot be lifted) at low pressure during the working process, and the clutch mechanism is easy to stick (the clutch cannot be disengaged, and the hammer head is always lifted or even hits the top) at high pressure. Because of different air pressures, the speed of the cylinder driving the clutch mechanism is also different, resulting in that the response speed of the cylinder is too fast at high pressure (easy to hit the hammer, the tail of the rack jumps, and the steel wire rope impacts greatly), and the response speed of the cylinder is too slow at low pressure (the steel wire rope is too loose, the steel wire rope jumps greatly, and the steel wire rope is easy to come off the wheel). Because the air pressure of the cylinder driving the clutch mechanism is fixed, the force of the pre-clutch cannot be soft, and the lifting force cannot be automatically strengthened, so that the impact of the winch is large during the hammer lifting operation, and the impact of the steel wire rope is large. Because the stroke of the cylinder is fixed, when the clutch transmission gap of the winch increases, the clutch stroke cannot be increased, causing the clutch to stick (the hammer head hits the top accident occurs). Because the cylinder is easy to freeze in winter outdoor construction, normal work cannot be carried out. The winch is damaged, the failure rate of the winch is high, and the construction cost is greatly improved. Therefore, a clutch and brake mechanism that can improve the working stability and service life of the winch is a problem that needs to be solved by the person skilled in the art. UTILITY MODEL CONTENTS

[0004] The technical problem solved by the utility model is to provide a winch clutch and brake mechanism to adjust the clutch force of the winch according to the size of the hammer, effectively brake the winch, reduce the failure rate of the winch, and improve the working stability and service life of the winch.

[0005] The technical problem solved by the utility model is solved by the following technical scheme: a winch clutch and brake mechanism, comprising a rack, a drum mounted on the rack, a clutch mechanism and a brake mechanism,

[0006] The winding drum is axially penetrated by a rotating shaft, one end of which is connected with a first shaft seat and the other end is connected with a second shaft seat; the winding drum is connected with a taper clutch device near the second shaft seat, the taper clutch device is connected with a large gear, the large gear is connected with a small gear, the small gear is connected with a speed reducer, and the speed reducer is connected with a main motor through a shaft coupling;

[0007] The clutch mechanism comprises a clutch driving part, a clutch pull arm, a winding drum pull arm and a push shaft sleeve assembly, one end of the clutch pull arm is rotatably connected with the clutch driving part, the other end is connected with the winding drum pull arm through a connecting rod, the winding drum pull arm is fixedly connected with the push shaft sleeve assembly, the push shaft sleeve assembly is arranged on the rotating shaft, and the push shaft sleeve assembly is arranged between the winding drum and the rack;

[0008] The brake mechanism comprises a brake braking part, a brake pull arm, a brake pull plate and a brake belt, one end of the brake pull arm is rotatably connected with the brake braking part, the other end is connected with the brake pull plate through a connecting rod, the bottom end of the brake pull plate is rotatably connected with the rack, the brake pull plate is fixedly connected with the brake belt through a connecting rod, and the brake belt is arranged on the taper clutch device.

[0009] Specifically, the taper clutch device comprises a taper clutch sleeve and a taper clutch block matched with each other, the taper clutch block is fixedly connected with the large gear, the taper clutch sleeve is fixedly connected with the winding drum, a disengaging spring is arranged between the taper clutch sleeve and the taper clutch block, and the brake belt is sleeved on the outside of the taper clutch sleeve.

[0010] Further, the push shaft sleeve assembly comprises a fixed shaft sleeve and a rotating shaft sleeve matched with each other, a concave-convex curved surface matched with each other is arranged between the fixed shaft sleeve and the rotating shaft sleeve, the fixed shaft sleeve is fixed on the rotating shaft, the winding drum pull arm is fixed on the rotating shaft sleeve and drives the rotating shaft sleeve to rotate and cooperate with the fixed shaft sleeve, and a plane bearing is arranged between the rotating shaft sleeve and the winding drum.

[0011] Further, a plurality of pin hole one is arranged on the clutch pull arm, a plurality of pin hole two is arranged on the winding drum pull arm, and the two ends of the connecting rod one are connected with the pin hole one and the pin hole two through pin lug one respectively.

[0012] Specifically, the connecting rod one is fastened with the pin lug one through an adjusting nut one.

[0013] Further, a plurality of pin hole three is arranged on the brake pull arm, a plurality of pin hole four is arranged on the brake pull plate, and the two ends of the connecting rod two are connected with the pin hole three and the pin hole four through pin lug two respectively.

[0014] Further, the connecting rod two passes through the adjusting nut two and is close to the bolt ear two.

[0015] Further, the clutching and braking mechanism is provided with the counterweight device on one side of the brake pulling plate close to the brake braking part.

[0016] Further, the clutching and braking mechanism is provided with the counterweight device on one side of the brake pulling plate close to the brake braking part.

[0017] Further, the clutching and braking mechanism is provided with the counterweight device on one side of the brake pulling plate close to the brake braking part.

[0018] The utility model discloses the beneficial effect of having:

[0019] 1, the clutching and braking mechanism of the utility model adopts the taper clutch device that the taper clutch sleeve and taper clutch block that mutually cooperate are formed, and is provided with the disengagement spring between the taper clutch sleeve and taper clutch block, helps the rotation shaft sleeve and fixed shaft sleeve's concave-convex surface cooperation of the rotation shaft sleeve of the push axle sleeve assembly that the clutching mechanical hand is driven through the clutching pulling arm of the drum pulling arm, thereby realizes the taper clutch sleeve and taper clutch block's disengagement and clamping, thereby effectively realizes the clutching of the drum.

[0020] 2, the clutching and braking mechanism of the utility model adopts the clutching mechanical hand to pull the clutching pulling arm, and the clutching pulling arm is connected the drum pulling arm through the connecting rod, and the stroke of the connecting rod is adjusted through the adjusting nut, can adjust the intensity of the pre-set pull and release clutch according to the size of different hammers, still can preset the stroke size of pull and release clutch according to the transmission gap size of the winch clutching device, can set the intensity of the initial pull clutch gently, set the intensity of the pull clutch after the clutch engagement is powerful, makes the operation control of the winch more human intelligence, reduces the operation impact of the winch, reduces the steel wire rope impact degree when lifting the hammer, reduces the possibility of sticking clutch in the working process of the winch, does not fear low temperature and normal construction in winter field, thereby reduces the failure rate of the winch, improves the working stability and service life of the winch, reduces the operation intensity of the operator, reduces the construction cost. ACCURACY

[0021] In order to more clearly illustrate the technical scheme of the utility model, the following will be to the embodiment or prior art description needed to use the drawing briefly introduced, obviously, the following description in the drawing is only some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0022] Figure 1 It is the structural schematic diagram of the utility model clutching and braking mechanism removes a wallboard;

[0023] Figure 2Is the clutch and brake mechanism structure section view of the utility model;

[0024] Figure 3 Is the enlarged structural schematic diagram of the push shaft sleeve assembly when the clutch and brake mechanism of the utility model is in the disengaged state;

[0025] Figure 4 Is the enlarged structural schematic diagram of the push shaft sleeve assembly when the clutch and brake mechanism of the utility model is in the engaged state.

[0026] In the drawing: 1 - frame, 2 - winding drum, 3 - clutch driving part, 4 - clutch pull arm, 5 - winding drum pull arm, 6 - push shaft sleeve assembly, 61 - fixed shaft sleeve, 62 - rotating shaft sleeve, 7 - connecting rod one, 8 - brake mechanical hand, 9 - brake pull arm, 10 - brake pull plate, 11 - brake belt, 12 - connecting rod two, 13 - connecting rod three, 14 - bolt hole one, 15 - bolt hole two, 16 - bolt ear one, 17 - adjusting nut one, 18 - bolt hole three, 19 - bolt hole four, 20 - bolt ear two, 21 - adjusting nut two, 22 - stop block one, 23 - stop block two, 24 - counterweight device, 25 - clutch manual operation handle, 26 - brake manual operation handle, 27 - rotating shaft, 28 - first shaft seat, 29 - second shaft seat, 30 - conical clutch disc, 31 - conical clutch block, 32 - disengaging spring, 33 - large gear, 34 - small gear, 35 - speed reducer, 36 - motor, 37 - plane bearing. DETAILED DESCRIPTION

[0027] The specific embodiments of the utility model are further described below in combination with examples, so that the technical scheme of the utility model and its beneficial effects are clearer and more explicit. The examples described below are exemplary and are intended to explain the utility model, and cannot be understood as limiting the utility model.

[0028] Embodiment:

[0029] As Figures 1 to 4 shown, the utility model discloses a kind of hoist clutch and brake mechanism, including frame 1, winding drum 2 being installed on frame, clutch mechanism and brake mechanism, the frame 1 is two pieces of oppositely arranged wallboard and is connected by base, and the winding drum 2 is arranged between two pieces of wallboard.The rotating shaft 27 is axially provided with in the winding drum 2, the rotating shaft 27 two ends extend out of the winding drum 2, one end is connected with first shaft seat 28, and the other end is connected with second shaft seat 29;First shaft seat 28 and second shaft seat 29 are respectively fixed on the two pieces of wallboard of frame 1.

[0030] The winding drum 2 is connected with a taper clutch device near one end of the second shaft seat 29, the taper clutch device is connected with a large gear 33, the large gear 33 is sleeved on the rotating shaft 27 and is fixedly connected with the rotating shaft 27, the large gear 33 is engaged with a small gear 34, the small gear 34 is connected with a speed reducer 35, and the speed reducer 35 is connected with a main motor 36 through a shaft coupling; specifically, the taper clutch device comprises a taper clutch sleeve 30 and a taper clutch block 31 which cooperate with each other, the taper clutch block 31 is fixedly connected with the large gear 32, the taper clutch sleeve 30 is fixedly connected with the winding drum 2, a disengaging spring 32 is arranged between the taper clutch sleeve 30 and the taper clutch block 31, and the brake belt 11 is sleeved on the outer side of the taper clutch sleeve 30. The main motor 36 drives the speed reducer 35 to rotate, the speed reducer 35 drives the small gear 34 to rotate, the small gear 34 drives the large gear 33 to rotate, and the large gear 33 drives the rotating shaft 27 to rotate; when the taper clutch device is pressed, the rotating shaft 27 drives the winding drum 2 to rotate.

[0031] The clutch mechanism comprises a clutch driving part 3, a clutch pull arm 4, a winding drum pull arm 5 and a pushing shaft sleeve assembly 6, the clutch driving part 3 is preferably a clutch mechanical hand, one end of the clutch pull arm 4 is rotatably connected with the clutch driving part 3, the other end is connected with the winding drum pull arm 5 through a connecting rod 7, the pushing shaft sleeve assembly 6 is arranged on the rotating shaft 27, the winding drum pull arm 5 is fixedly connected with the pushing shaft sleeve assembly 6, the pushing shaft sleeve assembly 6 is sleeved on the rotating shaft 27, and the pushing shaft sleeve assembly 6 is arranged between the winding drum 2 and the rack 1; the pushing shaft sleeve assembly 6 comprises a fixed shaft sleeve 61 and a rotating shaft sleeve 62 which cooperate with each other, recessed and convex curved surfaces which cooperate with each other are arranged between the fixed shaft sleeve 61 and the rotating shaft sleeve 62, the fixed shaft sleeve 61 is fixed on the rotating shaft 27, the winding drum pull arm 5 is fixed on the rotating shaft sleeve 62 and drives the rotating shaft sleeve 62 to rotate and then cooperates with the fixed shaft sleeve 61, and a plane bearing 37 is arranged between the rotating shaft sleeve 62 and the winding drum 2, so that the plane bearing 37 plays a role of avoiding rotation of the rotating shaft sleeve when the winding drum 2 rotates.

[0032] The working process of the clutch mechanism is as follows: the clutch driving part 3 drives the clutch pull arm 4 to act, the clutch pull arm 4 drives the winding drum pull arm 5, the winding drum pull arm 5 drives the rotating shaft sleeve 62 to rotate, when the convex surface of the recessed and convex curved surface of the rotating shaft sleeve 62 is in contact with the convex surface of the recessed and convex curved surface of the fixed shaft sleeve 61 (for example, the convex surface of the recessed and convex curved surface of the rotating shaft sleeve 62 is in contact with the convex surface of the recessed and convex curved surface of the fixed shaft sleeve 61), the winding drum 2 is driven to rotate by the fixed shaft sleeve 61 and the rotating shaft sleeve 62. Figure 4When the convex surface of the concave-convex surface of the rotating shaft sleeve 62 is in contact with the concave surface of the concave-convex surface of the fixed shaft sleeve 61 (as shown), the drum 2 is in contact with the rotating shaft sleeve 62, the tapered clutch sleeve 30 is in engagement with the tapered clutch block 31, at this time, the tapered clutch device is in the compression state, the main motor 36 drives the reduction box 35 to rotate, the reduction box 35 drives the pinion 34 to rotate, the pinion 34 drives the gear 33 to rotate, thereby driving the drum 2 to rotate. Figure 3 When the convex surface of the concave-convex surface of the rotating shaft sleeve 62 is in contact with the concave surface of the concave-convex surface of the fixed shaft sleeve 61 (as shown), the drum 2 is in contact with the rotating shaft sleeve 62, the tapered clutch sleeve 30 is in engagement with the tapered clutch block 31, at this time, the tapered clutch device is in the compression state, the main motor 36 drives the reduction box 35 to rotate, the reduction box 35 drives the pinion 34 to rotate, the pinion 34 drives the gear 33 to rotate, thereby driving the drum 2 to rotate.

[0033] The clutch pull arm 4 is provided with a plurality of pin hole one 14, the drum pull arm 5 is provided with a plurality of pin hole two 15, the two ends of the connecting rod one 7 are connected with the pin hole one 14 and the pin hole two 15 through the pin lug one 16, the connecting rod one 7 is fastened with the pin lug one 16 through the adjusting nut one 17, so as to adjust the size of the winch clutch force, and ensure that the drum pull arm 5 swings forward and backward at an angle close to each other, on the basis of the angle close to each other of the drum pull arm 5 forward and backward swing, the working length of the connecting rod one 7 is adjusted through the adjusting nut one 17 fastening with the pin lug one 16, so as to ensure that the angle of the clutch pull arm 4 swinging forward and backward is close to each other, and the pin lug one 16 of the connecting rod one 7 is not stuck with the clutch pull arm 4.

[0034] The brake mechanism comprises a brake brake part 8, a brake pull arm 9, a brake pull plate 10 and a brake belt 11, the brake brake part 8 is preferably a brake mechanical hand, one end of the brake pull arm 9 is rotatably connected with the brake brake part 8, the other end is connected with the brake pull plate 10 through the connecting rod two 12, and the two sides of the brake pull arm 9 are respectively provided with a stop block two 23. The bottom end of the brake pull plate 10 is rotatably connected with the rack 1, the brake pull plate 10 is fixedly connected with the brake belt 11 through the connecting rod three 13, and the side of the brake pull plate 10 close to the brake mechanical hand is provided with a counterweight device 24. The brake belt 11 is arranged outside the tapered clutch disc 30 of the tapered clutch device. When braking, the brake mechanical hand pulls the brake pull arm 9, the brake pull arm 9 pulls the brake pull plate 10, the brake pull plate 10 tightens the brake belt 11, and the brake belt 11 tightly holds the tapered clutch disc 30 to realize braking.

[0035] The brake pull arm 8 is provided with a plurality of pin hole three 18, the brake pull plate 10 is provided with a plurality of pin hole four 19, the two ends of the connecting rod two 12 are connected with the pin hole three 18 and pin hole four 19 through pin lug two 20 respectively. The connecting rod two 12 is fastened with the pin lug two 20 through adjusting nut two 21. The vertical state of the brake pull plate 10 is ensured when braking, and the working length of the connecting rod two 12 is adjusted through adjusting nut two 21 on the basis of the vertical state of the brake pull plate, then fastened with pin lug two 20, so that the brake pull arm 8 is also vertical.

[0036] Preferably, the top end of the clutch pull arm 4 is provided with a clutch manual operation handle 25, and the top end of the brake pull arm 9 is provided with a brake manual operation handle 26, which are used for the scene that manual operation of clutch and brake is needed.

[0037] The above only discloses a preferred embodiment of the utility model, and of course cannot limit the scope of the utility model, so equivalent changes made according to the utility model claims are still within the scope of the utility model.

Claims

1. A hoist clutch and brake mechanism, characterized in that: Includes a frame (1), a drum (2) mounted on the frame, a clutch mechanism, and a brake mechanism. The drum (2) is axially connected to a rotating shaft (27), with both ends of the rotating shaft (27) extending out of the drum (2). One end of the rotating shaft (27) is connected to a first bearing seat (28), and the other end is connected to a second bearing seat (29). A tapered clutch device is connected to one end of the drum (2) near the second bearing seat (29). The tapered clutch device is connected to a large gear (33). The large gear (33) is connected to a small gear (34). The small gear (34) is connected to a reduction gearbox (35). The reduction gearbox (35) is connected to a main motor (36) via a coupling. The clutch mechanism includes a clutch drive unit (3), a clutch pull arm (4), a drum pull arm (5), and a push bushing assembly (6). One end of the clutch pull arm (4) is rotatably connected to the clutch drive unit (3), and the other end is connected to the drum pull arm (5) through a connecting rod (7). The drum pull arm (5) is fixedly connected to the push bushing assembly (6). The push bushing assembly (6) is sleeved on the rotating shaft (27). The push bushing assembly (6) is located between the drum (2) and the frame (1). The braking mechanism includes a brake unit (8), a brake arm (9), a brake plate (10), and a brake band (11). One end of the brake arm (9) is rotatably connected to the brake unit (8), and the other end is connected to the brake plate (10) via a second connecting rod (12). The bottom end of the brake plate (10) is rotatably connected to the frame (1). The brake plate (10) is fixedly connected to the brake band (11) via a third connecting rod (13). The brake band (11) is mounted on the tapered clutch device.

2. The winch clutch and brake mechanism according to claim 1, characterized in that, The tapered clutch device includes a tapered clutch sleeve (30) and a tapered clutch block (31) that cooperate with each other. The tapered clutch block (31) is fixedly connected to the large gear (33), and the tapered clutch sleeve (30) is fixedly connected to the drum (2). A release spring (32) is provided between the tapered clutch sleeve (30) and the tapered clutch block (31). The brake band (11) is sleeved on the outside of the tapered clutch sleeve (30).

3. The winch clutch and brake mechanism according to claim 1, characterized in that, The push bushing assembly (6) includes a fixed bushing (61) and a rotating bushing (62) that cooperate with each other. The fixed bushing (61) and the rotating bushing (62) are provided with mutually cooperating concave and convex curved surfaces. The fixed bushing (61) is fixed on the rotating shaft (27). The drum pull arm (5) is fixed on the rotating bushing (62) and drives the rotating bushing (62) to rotate and cooperate with the fixed bushing (61). A plane bearing (37) is provided between the rotating bushing (62) and the drum (2).

4. The winch clutch and brake mechanism according to claim 1, characterized in that, The clutch lever (4) is provided with several pin holes (14), and the drum lever (5) is provided with several pin holes (15). The two ends of the connecting rod (7) are respectively connected to the pin holes (14) and the pin holes (15) through the pin ears (16).

5. A winch clutch and brake mechanism according to claim 4, characterized in that, The connecting rod (7) is tightened with the latch lug (16) by adjusting nut (17).

6. The winch clutch and brake mechanism according to claim 1, characterized in that, The brake lever (9) is provided with several pin holes three (18), the brake pull plate (10) is provided with several pin holes four (19), and the two ends of the connecting rod two (12) are respectively connected to the pin holes three (18) and pin holes four (19) through pin ears two (20).

7. A winch clutch and brake mechanism according to claim 6, characterized in that, The second connecting rod (12) is tightened with the second pin lug (20) by the second adjusting nut (21).

8. The winch clutch and brake mechanism according to claim 1, characterized in that, The clutch lever (4) is provided with a stop block 1 (22) on both sides, and the brake lever (9) is provided with a stop block 2 (23) on both sides.

9. A winch clutch and brake mechanism according to claim 1, characterized in that, The brake pull plate (10) is provided with a counterweight device (24) on the side near the brake braking part.

10. A winch clutch and brake mechanism according to claim 1, characterized in that, The clutch lever (4) is provided with a clutch manual operation handle (25) at the top, and the brake lever (9) is provided with a brake manual operation handle (26) at the top.

Images