CN114314390A

CN114314390A - Speed-limiting locking mechanism for mechanical crane boom

Info

Publication number: CN114314390A
Application number: CN202111442811.3A
Authority: CN
Inventors: 汪继刚
Original assignee: Xuzhou Kainuo Machinery Co ltd
Current assignee: Xuzhou Kainuo Machinery Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-04-12

Abstract

The invention relates to the technical field of machinery, and discloses a speed-limiting locking mechanism for a mechanical crane boom, which comprises a winding device for increasing bearing, wherein the winding device comprises a winding wheel, the surface of the winding wheel is fixedly connected with a friction wheel for reducing the speed of the winding wheel, and the rear side surface of the friction wheel is fixedly connected with a one-way clamping wheel for clamping the winding wheel. This a speed limit locking mechanism for mechanical crane boom, through the spiral device, the pull wire, the spud pile, locking means, just reverse adjusting device, touch device, the cooperation of helical gear and stopper is used, thereby reached and increased locking means to spiral device part, guaranteed the heavy object at hover and the stability of decline in-process, prevent that it from descending the losing control, fall even, the security of device has been increased, and utilize the gravitational potential energy decline of heavy object self when descending, and utilize locking means control speed that descends, more energy-concerving and environment-protective effect.

Description

Speed-limiting locking mechanism for mechanical crane boom

Technical Field

The invention relates to the technical field of machinery, in particular to a speed-limiting locking mechanism for a mechanical crane boom.

Background

The crane is used for lifting heavy objects and completing the work of transferring the heavy objects, the swing amplitude of the existing crane boom is too small, and the weight of the lifted objects is limited, but the problem is solved by the large mechanical boom of the patent CN 112520605A.

However, the roller and the motor of the crane boom in patent CN112520605A for increasing the weight of the lifted articles do not have a locking device, and when the heavy articles are suspended and dropped, the weight dropping speed is out of control or even dropped due to slipping, which may cause loss and also cause safety accidents, and when the heavy articles are dropped, the motor is also needed to do work to put down the articles, so the gravitational potential energy of the articles cannot be effectively utilized, which is not energy-saving and environment-friendly, so it is necessary to improve the roller and the motor part

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a speed-limiting locking mechanism for a mechanical crane boom, which is provided with a locking device added on a winding device part, ensures the stability of a heavy object in the hovering and descending processes, prevents the heavy object from falling out of control or even falling, increases the safety of the device, and utilizes the self gravitational potential energy of the heavy object to descend when the heavy object descends, the locking device is used for controlling the descending speed, the advantages of more energy conservation and environmental protection are achieved, the problem that the roller and the motor of the crane arm in the patent CN112520605A which increase the weight of the lifted object are not provided with the locking device is solved, when the heavy object is suspended and descended, the weight is out of control of descending speed and even falls due to the slip, the loss is caused, and meanwhile, safety accidents can be caused, and the motor is also needed to do work to put down the article when the article descends, so that the gravitational potential energy of the article can not be effectively utilized, and the energy conservation and the environmental protection are not enough.

(II) technical scheme

In order to realize the purposes that the locking device is added to the winding device part, the stability of the heavy object in the hovering and descending processes is ensured, the heavy object is prevented from falling out of control and even falling, the safety of the device is improved, the gravity potential energy of the heavy object is utilized to descend in the descending process, the descending speed is controlled by the locking device, and the purposes of energy conservation and environmental protection are achieved, the invention provides the following technical scheme: the speed-limiting locking mechanism for the mechanical crane boom comprises a winding device for increasing bearing capacity, wherein the winding device comprises a winding wheel, a friction wheel for reducing the speed of the winding wheel is fixedly connected to the surface of the winding wheel, and a one-way clamping wheel for clamping the winding wheel is fixedly connected to the rear side surface of the friction wheel.

Preferably, the rear side surface of the one-way chuck wheel is provided with uniform teeth.

The winding machine is characterized by further comprising a fixing pile, the surface of the winding wheel is fixedly connected with one end of a traction wire, the upper side of the one-way clamping wheel is meshed with a helical gear, and the right side surface of the helical gear is fixedly connected with a connecting shaft.

Preferably, the number of the bevel gears is three, two of the bevel gears are fixedly connected and are centrosymmetric, and the bevel gear on the lower side of the two bevel gears is in transmission connection with the bevel gear through the teeth on the one-way clamping gear; the helical gear on the upper side is meshed with the third helical gear, the third helical gear is fixedly connected with the left end of the connecting shaft, and the connecting shaft is rotatably connected with the fixing pile.

The utility model discloses a spiral winding device, including spiral device, locking device, swing rod, right-hand member, fixed surface is connected with the lug that blocks that is used for blocking one-way calorie of wheel, the downside of spiral device is provided with the locking device that is used for its speed limit to block, locking device includes the swing rod, the surface of swing rod articulates there is the articulated mast, the upper end of articulated mast is provided with the cooperation groove, the right-hand member upside fixed surface of swing rod is connected with and is used for blockking the lug with one-way calorie of wheel, the downside that blocks the lug is provided with friction braking device, the downside surface of swing rod is provided with the draw-in groove.

Preferably, the left end of the swinging rod is hinged with the fixing pile.

The friction braking device comprises a sliding groove, a braking block used for decelerating the friction wheel is connected inside the sliding groove in a sliding mode, and a braking spring is fixedly connected to the lower side surface of the braking block.

Preferably, the sliding groove is fixedly connected with the swinging rod, the brake block is in contact with the friction wheel, and the brake spring is in a compressed state.

The downside of swinging arms is provided with just reversing adjusting device, just reversing adjusting device includes adjusting panel, adjusting panel's fixed surface is connected with the pilot mark, adjusting panel's surface is rotated and is connected with adjust knob, adjust knob's surface is provided with the pointer, adjust knob's inside is provided with the spring beam, adjust panel's fixed surface is connected with the stopper.

Preferably, the adjusting panel is fixed, the two indicating marks are centrosymmetric with respect to the center of the adjusting knob, and the pointer is located on the connecting line of the two indicating marks.

Preferably, the spring rod is perpendicular to and in contact with the swinging rod and is in a compressed state; the limiting block is arranged on the rotation track of the clamping groove.

The left side of the connecting shaft is provided with a touch device, the touch device comprises a rotating shaft, the surface of the rotating shaft is connected with a sliding column in a sliding mode, the surface of the sliding column is fixedly connected with a protruding column, the surface of the sliding column is connected with a rotating column in a rotating mode, the surface of the rotating column is hinged with a connecting rod, one end of the connecting rod is hinged with a centrifugal sliding block used for driving the rotating column to move through the connecting rod, the surface of the rotating shaft is fixedly connected with a centrifugal sliding rod, and the surface of the centrifugal sliding block is fixedly connected with a reset spring.

Preferably, the left end of axis of rotation is connected the right-hand member with third helical gear fixed connection with the spud pile rotation, and the axis of rotation is on same straight line with the connecting axle, protruding post and cooperation groove sliding connection for drive the hinge bar and rotate.

(III) advantageous effects

Compared with the prior art, the invention provides a speed-limiting locking mechanism for a mechanical crane boom, which has the following beneficial effects:

this a speed limit locking mechanism for mechanical crane boom, through the spiral device, the pull wire, the spud pile, locking means, just reverse adjusting device, touch device, the cooperation of helical gear and stopper is used, thereby reached and increased locking means to spiral device part, guaranteed the heavy object at hover and the stability of decline in-process, prevent that it from descending the losing control, fall even, the security of device has been increased, and utilize the gravitational potential energy decline of heavy object self when descending, and utilize locking means control speed that descends, more energy-concerving and environment-protective effect.

Drawings

FIG. 1 is a partial view of the cord reeling device and locking device of the present invention;

FIG. 2 is a schematic view of a portion of the triggering mechanism of the present invention;

FIG. 3 is an enlarged view of section E of FIG. 1 according to the present invention.

In the figure: 1. a wire winding device; 11. a winding wheel; 12. a friction wheel; 13. a one-way clamping wheel;

2. a pull wire; 3. fixing the pile;

4. a locking device; 41. a swing lever; 42. a hinged lever; 43. a mating groove; 44. blocking the bump; 45. a friction braking device; 46. a card slot;

451. a sliding groove; 452. a brake pad; 453. a brake spring;

5. a forward and reverse rotation adjusting device; 51. an adjustment panel; 52. an indication mark; 53. adjusting a knob; 54. a pointer; 55. a spring lever; 56. a limiting block;

6. a touch device; 61. a rotating shaft; 62. a sliding post; 63. a raised post; 64. rotating the column; 65. a connecting rod; 66. a centrifugal slider; 67. centrifuging the slide bar; 68. a return spring;

7. a helical gear; 8. and (7) connecting the shafts.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-3, a speed-limiting locking mechanism for a mechanical boom comprises a winding device 1 for increasing load bearing, wherein the winding device 1 comprises a winding wheel 11, a friction wheel 12 for reducing the speed of the winding wheel 11 is fixedly connected to the surface of the winding wheel 11, and a one-way clamping wheel 13 for clamping the winding wheel 11 is fixedly connected to the rear side surface of the friction wheel 12.

The rear side surface of the one-way click wheel 13 is provided with uniform teeth.

The device further comprises a fixing pile 3, one end of a traction wire 2 is fixedly connected to the surface of a winding wheel 11, a helical gear 7 is meshed to the upper side of a one-way clamping wheel 13, and a connecting shaft 8 is fixedly connected to the right side surface of the helical gear 7.

The number of the bevel gears 7 is three, two of the bevel gears 7 are fixedly connected and are centrosymmetric, and the bevel gear 7 on the lower side of the two bevel gears 7 is in transmission connection with the one-way clamping wheel 13 through teeth on the one-way clamping wheel; the bevel gear 7 on the upper side is meshed with the third bevel gear 7, the third bevel gear 7 is fixedly connected with the left end of the connecting shaft 8, and the connecting shaft 8 is rotatably connected with the fixing pile 3.

The lower side of the winding device 1 is provided with a locking device 4 used for limiting the speed of the winding device to be clamped, the locking device 4 comprises a swing rod 41, the surface of the swing rod 41 is hinged with a hinged rod 42, the upper end of the hinged rod 42 is provided with a matching groove 43, the upper side surface of the right end of the swing rod 41 is fixedly connected with a blocking lug 44 used for clamping the unidirectional clamping wheel 13, the lower side of the blocking lug 44 is provided with a friction braking device 45, and the lower side surface of the swing rod 41 is provided with a clamping groove 46.

The left end of the swing lever 41 is hinged to the spud pile 3.

Example two:

The friction brake device 45 includes a slide groove 451, a brake pad 452 for decelerating the friction wheel 12 is slidably connected to the inside of the slide groove 451, and a brake spring 453 is fixedly connected to a lower surface of the brake pad 452.

The slide groove 451 is fixedly connected to the swing lever 41, the brake block 452 is in contact with the friction wheel 12, and the brake spring 453 is in a compressed state.

Example three:

The lower side of the swing rod 41 is provided with a forward and reverse rotation adjusting device 5, the forward and reverse rotation adjusting device 5 comprises an adjusting panel 51, the surface of the adjusting panel 51 is fixedly connected with an indicating sign 52, the surface of the adjusting panel 51 is rotatably connected with an adjusting knob 53, the surface of the adjusting knob 53 is provided with a pointer 54, the inside of the adjusting knob 53 is provided with a spring rod 55, and the surface of the adjusting panel 51 is fixedly connected with a limiting block 56.

The adjusting panel 51 is fixed, the two indicating marks 52 are symmetrical about the center of the circle of the adjusting knob 53, and the pointer 54 is arranged on the connecting line of the two indicating marks 52.

The spring lever 55 is perpendicular to and in contact with the oscillating lever 41 and is in compression; the stopper 56 is on the rotation track of the slot 46.

Example four:

The left side of connecting axle 8 is provided with touch device 6, touch device 6 includes axis of rotation 61, the surperficial sliding connection of axis of rotation 61 has sliding column 62, the fixed surface of sliding column 62 is connected with protruding post 63, sliding column 62's surperficial rotation is connected with rotating column 64, rotating column 64's surperficial articulated connecting rod 65 that has, connecting rod 65's one end is articulated to have and is used for driving the centrifugal slider 66 that rotating column 64 moved through connecting rod 65, the fixed surface of axis of rotation 61 is connected with centrifugal slide bar 67, centrifugal slider 66's fixed surface is connected with reset spring 68.

The left end of axis of rotation 61 rotates with spud pile 3 and is connected the right-hand member and third helical gear 7 fixed connection, and axis of rotation 61 and connecting axle 8 are on same straight line, protruding post 63 and cooperation groove 43 sliding connection to be used for driving articulated rod 42 and rotate.

Example five:

The left end of the swing lever 41 is hinged to the spud pile 3.

Working process and principle the initial state of the speed-limiting locking mechanism for the mechanical boom is as claimed in the claims and figures 1-3.

When the cargo boom lifts, when the adjusting knob 53 rotates for a half turn, the pointer 54 arranged on the adjusting knob 53 points to the other indicating mark 52, at this time, the spring rod 55 loses contact with the swing rod 41, the swing rod 41 rotates downwards under the action of gravity until the clamping groove 46 arranged on the swing rod is clamped by the limiting block 56 and does not rotate downwards, and the winding wheel 11 rotates anticlockwise to drive the traction wire 2 wound on the winding wheel to be retracted and drive the friction wheel 12 and the one-way clamping wheel 13 arranged on the winding wheel to rotate.

When the suspended object is suspended, the adjusting knob 53 is turned to the original position, the spring rod 55 contacts and drives the swing rod 41 to rotate upward, the blocking protrusion 44 disposed on the upper side of the swing rod 41 is engaged with the one-way catch wheel 13, the brake block 452 on the friction brake device 45 on the swing rod 41 contacts the friction wheel 12, and the brake spring 453 is in a compressed state. At this time, the friction wheel 12 is braked by the friction braking device 45, the one-way catch wheel 13 is caught by the blocking projection 44 and cannot rotate clockwise, and as can be seen from the above, the winding wheel 11 cannot rotate clockwise, and the hoisted objects cannot be put down.

When the hoisted object is to be laid down, the winding wheel 11 rotates clockwise, and when the laying speed is too high, the winding wheel 11 drives the helical gear 7 engaged therewith to rotate, and the helical gear 7 drives the helical gear 7 fixedly connected with the rotating shaft 61 to rotate through the other helical gear 7 fixedly connected with the helical gear 7, namely, the rotating shaft 61 rotates. The rotating shaft 61 rotates to drive the centrifugal slide bar 67 fixedly connected with the rotating shaft to rotate, the centrifugal slide block 66 connected with the centrifugal slide bar 67 in a sliding mode rotates along with the centrifugal slide bar and moves centrifugally, the centrifugal slide block slides towards the other end of the centrifugal slide bar 67 to drive the connecting rod 65 hinged with the centrifugal slide bar to move, the connecting rod 65 drives the rotating column 64 hinged with the other end of the connecting rod to move leftwards, and the rotating column 64 drives the sliding column 62 connected with the rotating column to move leftwards.

The protruding column 63 fixed on the sliding column 62 moves leftwards along with the sliding column, the matching groove 43 connected with the sliding column drives the hinge rod 42 to move, the hinge rod 42 drives the swing rod 41 hinged with the lower end to move leftwards, and drives the swing rod 41 to move upwards, according to the above, the locking device 4 brakes the wire winding device 1, so as to decelerate or stop until the descending speed of the hoisted object is reduced to a certain degree.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A speed limit locking mechanism for a mechanical crane arm is characterized in that: including increasing spiral device (1) of bearing, spiral device (1) is including spiral wheel (11), the fixed surface of spiral wheel (11) is connected with friction pulley (12) that are used for spiral wheel (11) deceleration, the rear side surface fixedly connected with of friction pulley (12) is used for blocking dead one-way card wheel (13) of spiral wheel (11).

2. The speed-limiting locking mechanism for the mechanical boom of claim 1, wherein: the rear side surface of the one-way clamping wheel (13) is provided with uniform teeth.

3. The speed-limiting locking mechanism for the mechanical boom of claim 1, wherein: still include spud pile (3), the fixed surface of spiral reel (11) is connected with the one end of pull wire (2), the upside meshing of one-way calorie of wheel (13) has helical gear (7), the right side fixed surface of helical gear (7) is connected with connecting axle (8).

4. The speed-limiting locking mechanism for the mechanical boom of claim 3, wherein: the number of the helical gears (7) is three, two helical gears (7) are fixedly connected and are centrosymmetric, and the helical gear (7) on the lower side of the two helical gears (7) is in transmission connection with the one-way clamping wheel (13) through teeth on the one-way clamping wheel; the bevel gear (7) on the upper side is meshed with the third bevel gear (7), the third bevel gear (7) is fixedly connected with the left end of the connecting shaft (8), and the connecting shaft (8) is rotatably connected with the fixing pile (3).

5. The speed-limiting locking mechanism for the mechanical boom of claim 3, wherein: the downside of spiral device (1) is provided with locking device (4) that are used for its speed limit to block, locking device (4) include swinging arms (41), the surface of swinging arms (41) articulates there is articulated pole (42), the upper end of articulated pole (42) is provided with cooperation groove (43), the right-hand member upside fixed surface of swinging arms (41) is connected with and is used for blockking lug (44) that unidirectional card wheel (13) blocked, the downside that blocks lug (44) is provided with friction braking device (45), the downside surface of swinging arms (41) is provided with draw-in groove (46).

6. The speed-limiting locking mechanism for the mechanical boom of claim 5, wherein: the left end of the swinging rod (41) is hinged with the fixed pile (3).

7. The speed-limiting locking mechanism for the mechanical boom of claim 5, wherein: the friction braking device (45) comprises a sliding groove (451), a brake block (452) for decelerating the friction wheel (12) is connected in the sliding groove (451) in a sliding mode, and a brake spring (453) is fixedly connected to the lower side surface of the brake block (452).

8. The speed-limiting locking mechanism for the mechanical boom of claim 7, wherein: the sliding groove (451) is fixedly connected with the swinging rod (41), the brake block (452) is contacted with the friction wheel (12), and the brake spring (453) is in a compressed state. The downside of swinging arms (41) is provided with just reversing adjusting device (5), just reversing adjusting device (5) is including adjusting panel (51), the fixed surface of adjusting panel (51) is connected with pilot sign (52), the surface rotation of adjusting panel (51) is connected with adjust knob (53), the surface of adjust knob (53) is provided with pointer (54), the inside of adjust knob (53) is provided with spring beam (55), the fixed surface of adjusting panel (51) is connected with stopper (56).

9. The speed-limiting locking mechanism for the mechanical boom of claim 7, wherein: the adjusting panel (51) is fixed, the two indicating marks (52) are symmetrical about the center of a circle of the adjusting knob (53), and the pointer (54) is arranged on the connecting line of the two indicating marks (52). The spring rod (55) is vertical to and in contact with the swinging rod (41) and is in a compressed state; the limiting block (56) is arranged on the rotation track of the clamping groove (46). The left side of connecting axle (8) is provided with touch device (6), touch device (6) include axis of rotation (61), the surperficial sliding connection of axis of rotation (61) has slip post (62), the fixed surface of slip post (62) is connected with protruding post (63), the surperficial rotation of slip post (62) is connected with rotates post (64), the surface of rotating post (64) articulates there is connecting rod (65), the one end of connecting rod (65) articulates there is centrifugal slider (66) that is used for driving rotation post (64) through connecting rod (65) to remove, the fixed surface of axis of rotation (61) is connected with centrifugal slide bar (67), the fixed surface of centrifugal slider (66) is connected with reset spring (68).

10. The speed-limiting locking mechanism for the mechanical boom of claim 9, wherein: the left end of axis of rotation (61) rotates with spud pile (3) and is connected the right-hand member and third helical gear (7) fixed connection, and axis of rotation (61) and connecting axle (8) are on same straight line, protruding post (63) and cooperation groove (43) sliding connection to it rotates to be used for driving hinge bar (42).