CN217996559U - Hoisting mechanism with towards top buffer function - Google Patents

Abstract

The application discloses hoisting mechanism with dash buffering function, including reel, left fixed pulley group, left running block, right fixed pulley group, right running block and dash buffering subassembly, dash and to push up buffering subassembly and include first buffer pulley and second buffer pulley, it has mutually independent left wire rope and right wire rope to twine on the reel, and left wire rope twines on first buffer pulley after left running block and left fixed pulley in proper order after winding out the reel, and right wire rope twines on second buffer pulley after right running block and right fixed pulley in proper order after winding out the reel, be provided with first friction disc on the first buffer pulley, be provided with the second friction disc on the second buffer pulley, two friction disc intercommunications. The top impact buffering assembly is arranged in the existing hoisting mechanism, when the hoisting machinery impacts the top, the top impact buffering assembly can release the steel wire rope, and automatic buffering protection when the hoisting machinery impacts the top is achieved.

Description

Hoisting mechanism with towards top buffer function

Technical Field

The application relates to the technical field of hoisting machinery, in particular to a hoisting mechanism with a top-impacting buffering function.

Background

The hoisting machine refers to an electromechanical device for vertically lifting or vertically lifting and horizontally moving a heavy object. The 'top impact' of the hoisting machinery is an accident that when the lifting appliances such as a movable pulley block and a lifting hook reach the upper limit, the lifting appliances are not stopped in time due to the faults of a stroke limiting device, misoperation and the like, so that the lifting appliances collide with a bridge girder, a trolley frame and the like. The 'top rushing' is a serious accident, which not only causes the damage and the scrap of the crane, but also causes the personal injury accident of field hoisting operators.

At present, the existing hoisting machinery is lack of a top-impacting protection structure.

Disclosure of Invention

In order to solve the problems and the defects existing in the prior art, the application provides a hoisting mechanism with a top impacting buffering function, which can realize automatic buffering protection when a hoisting machine impacts the top, improve the running safety of equipment and reduce unnecessary personal injury accidents.

In order to achieve the above object of the invention, the technical solution of the present application is as follows:

the utility model provides a hoisting mechanism with dash buffering function, includes reel, left standing block, left running block, right standing block and right running block, still includes dashes and pushes up buffering subassembly, dash and push up buffering subassembly including rotating first buffering pulley and the second buffering pulley that sets up mutual independence on the support frame, twine mutual independent left wire rope and right wire rope on the reel, left wire rope twines on first buffering pulley behind left running block and left standing block in proper order after winding out the reel to with first buffering pulley fixed connection, right wire rope twines on second buffering pulley behind right running block and right standing block in proper order after winding out the reel, and with second buffering pulley fixed connection, be provided with first friction disc on the first buffering pulley, be provided with the second friction disc on the second buffering pulley, two friction disc mutual contacts still are provided with the pressure adjusting part who is used for adjusting the contact extrusion force between two on the second buffering pulley.

Further, the pressure adjusting assembly comprises a spring and a sleeve, the spring is arranged in the sleeve, a locking bolt is arranged at one end of the sleeve, a screw rod part of the locking bolt penetrates through the second buffer pulley, a nut is arranged on the screw rod, one end of the spring is connected with the second friction plate, and the other end of the spring is connected with the locking bolt.

Furthermore, after the left steel wire rope is wound on the first buffer pulley, the left steel wire rope is fixedly connected with a first rope pressing plate arranged on the first buffer pulley.

Furthermore, the right steel wire rope is wound on the second buffer pulley and then is fixedly connected with a second rope pressing plate arranged on the second buffer pulley.

Furthermore, first buffer pulley and second buffer pulley are connected with the installation axle rotation on the support frame through two independent antifriction bearing respectively.

The beneficial effect of this application:

(1) This application has set up towards a buffering subassembly in current hoisting mechanism, when jack-up machinery takes place to dash to push up, dashes to push up buffering subassembly and will release wire rope automatically, realizes the automatic buffer protection when jack-up machinery dashes to push up, improve equipment operation safety, reduce unnecessary bodily injury accident.

(2) The utility model provides a dash automatic buffer protection when top protection architecture not only can realize jack-up machinery dashes to push up, when the condition that overloads appears in jack-up machinery and when one of them wire rope fracture, another wire rope can hold the hoist, and the hoist can not directly drop to ground, and the safety margin is big, and whole jack-up machinery can realize overload automatic protection.

Drawings

The foregoing and following detailed description of the present application will become more apparent when read in conjunction with the following drawings, wherein:

FIG. 1 is a general schematic view of a hoisting mechanism of the present application;

FIG. 2 is a schematic view of a top-punch cushioning assembly of the present application;

FIG. 3 is an enlarged view of the portion A in FIG. 2;

FIG. 4 is a top view of a top impact cushion assembly of the present application.

In the figure:

1. a reel; 2. a left crown block; 3. a left movable pulley block; 4. a right crown block; 5. a right movable pulley block; 6. a top-punching buffer component; 7. a left wire rope; 8. a right wire rope; 9. a first friction plate; 10. a second friction plate; 11. a pressure regulating assembly; 12. a nut; 13. a first rope pressing plate; 14. a second rope pressing plate; 61. a first buffer pulley; 62. a second buffer pulley; 111. a spring; 112. a sleeve; 113. and locking the bolt.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions for achieving the objects of the present application will be further described below by using several specific examples, and it should be noted that the technical solutions claimed in the present application include, but are not limited to, the following examples. 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 application.

The 'top impact' of the hoisting machinery is an accident that when the lifting appliances such as a movable pulley block and a lifting hook reach the upper limit, the lifting appliances are not stopped in time due to the faults of a stroke limiting device, misoperation and the like, so that the lifting appliances collide with a bridge girder, a trolley frame and the like. The 'top rushing' is a serious accident, which not only causes the damage and the scrap of the crane, but also causes the personal injury accident of field hoisting operators. However, at present, the existing hoisting machinery lacks a top-impacting protection structure.

Based on this, the embodiment provides a hoisting mechanism with a top punching buffering function, which is shown in fig. 1-fig. 3 with reference to the attached drawings of the specification, and includes a winding drum 1, a left fixed pulley block 2, a left movable pulley block 3, a right fixed pulley block 4 and a right movable pulley block 5, wherein the winding drum 1, the left fixed pulley block 2 and the right fixed pulley block 4 are fixedly arranged on a framework, and the left pulley block 3 and the right pulley block 5 are fixedly assembled with a lifting appliance in the hoisting mechanism; furthermore, the hoisting mechanism further comprises a top impacting buffering component 6, the top impacting buffering component 6 comprises a first buffering pulley 61 and a second buffering pulley 62 which are rotatably arranged on the support frame and are independent of each other, a left steel wire rope 7 and a right steel wire rope 8 which are independent of each other are wound on the winding drum 1, the left steel wire rope 7 sequentially passes through the left movable pulley block 3 and the left fixed pulley block 2 after being wound out of the winding drum, then enters the first buffering pulley 61 and is wound on the first buffering pulley 61, the end of the left steel wire rope 7 is fixedly connected with the first buffering pulley 61, the right steel wire rope 8 sequentially passes through the right movable pulley block 5 and the right fixed pulley block 4 after being wound out of the winding drum 1, then enters the second buffering pulley 62 and is wound on the second buffering pulley 62, and the end of the right steel wire rope 8 is fixedly connected with the second buffering pulley 62; further, a first friction plate 9 is arranged on the first buffer pulley 61, a second friction plate 10 matched with the first friction plate 9 is arranged on the second buffer pulley 62, the two friction plates are in contact with each other, and a pressure adjusting assembly 11 for adjusting contact extrusion force between the two friction plates so as to adjust friction force between the two friction plates is further arranged on the second buffer pulley 82.

In this embodiment, referring to fig. 2 in the specification, the first buffer pulley 61 and the second buffer pulley 62 are independent from each other, which means that the first buffer pulley 61 and the second buffer pulley 62 are respectively rotatably connected with the mounting shaft on the support frame through independent rolling bearings, that is, both are rotatably arranged on the same mounting shaft through respective rolling bearings, and further, the support frame is fixed on a support seat arranged on the trolley frame through a bolt pair. When not skidding between two friction discs, two buffering pulleys are equivalent to a whole, but when the friction disc skids the back, because two buffering pulleys set up at the installation epaxial through respective antifriction bearing, consequently will produce relative motion between two buffering pulleys, and the wire rope of winding on buffering pulley will obtain the release, plays the effect of buffering, improve equipment operation safety, reduces unnecessary bodily injury accident.

When the hoisting mechanism works normally, the two buffering pulleys are connected into a whole through the friction plates, the two buffering pulleys are relatively static under the interaction of the friction plates, the effect of a balancing device is achieved, when the hoisting machinery is subjected to the condition of bumping, the tension of the steel wire rope is greater than a set threshold value at the moment, the friction plates between the two buffering pulleys slip, the first buffering pulley and the second buffering pulley rotate relatively, the steel wire rope wound on the buffering pulleys is released, the lifting appliance descends, and the lifting appliance cannot collide with a bridge girder, a small car frame and the like.

In this embodiment, the steel wire rope winding system is divided into a left part and a right part which are relatively independent, and the middle part is connected into an organic whole through the jacking buffer assembly, so that after the steel wire rope of one buffer pulley is broken, the other steel wire rope can still work independently to pull the lifting appliance, the lifting appliance cannot fall to the ground directly, and the safety margin of the lifting machine is large.

In the embodiment, the impact buffering assembly is used for buffering the impact of the hoisting machinery, and has the function of overload protection. When the hoisting machinery is overloaded and the tension of the steel wire rope is greater than a set threshold value, similarly, the friction sheet between the two buffer pulleys can slip, and the first buffer pulley and the second buffer pulley rotate relatively, so that the steel wire rope wound on the buffer pulleys is released, and the overload protection effect is achieved.

In this embodiment, it should be noted that, although the left wire rope and the right wire rope are independent from each other and are two independent wire ropes, both of them rely on the same drum to realize the winding and unwinding of the wire rope.

In this embodiment, it should be further noted that the left wire rope and the right wire rope are wound on the corresponding first buffer pulley and the second buffer pulley in multiple layers, so that a long stroke adjustment range can be realized.

In this embodiment, it should be further explained that adjusting the contact pressing force between the two friction plates is adjusting the friction force between the two friction plates, so as to increase or decrease the connection strength between the first buffer pulley and the second buffer pulley.

Example 2

The embodiment provides a hoisting mechanism with a ram buffering function, and on the basis of the embodiment 1, the embodiment further defines the hoisting mechanism, and is specifically as follows.

Referring to the attached fig. 3 in the specification, the pressure assembly 11 for adjusting the contact extrusion force between two friction plates mainly includes a spring 111, a sleeve 112 and a lock bolt 113, the spring 111 is disposed in the sleeve 112, one end of the sleeve 112 is provided with the lock bolt 113, a screw portion of the lock bolt 113 passes through the second buffer pulley 62 and penetrates out of the second buffer pulley 62, a nut 12 is disposed on a screw penetrating out of the second buffer pulley 62, one end of the spring 111 is connected with the second friction plate 10, and the other end is connected with a head of the lock bolt 113, when the friction force between two friction plates needs to be adjusted, the nut is screwed inwards or outwards, the second buffer pulley is pressed inwards or pushed outwards, so that the pressing and loosening of the spring is realized, and finally the friction force between two friction plates can be increased or decreased.

Referring to the attached drawings 3 and 4 of the specification, the end of the left steel wire rope 7 enters the first buffer pulley 61 and is wound in multiple layers, and then is led out through a special rope hole, and is fixedly connected with the first rope pressing plate 13 arranged on the side surface of the first buffer pulley 61.

Referring to the attached fig. 3 and 4 of the specification, the end of the right steel wire rope 8 enters the second buffer pulley 62, is wound in multiple layers, is led out through a special rope hole, and is fixedly connected with the second rope pressing plate 14 arranged on the side surface of the second buffer pulley 62.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.

In the description of the present application, it should also be noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly and can include, for example, fixed connections, detachable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The foregoing is directed to embodiments of the present invention, which are not limited thereto, and any simple modifications and equivalents thereof according to the technical spirit of the present invention may be made within the scope of the present invention.

Claims (5)

1. A lifting mechanism with a top punching buffering function comprises a winding drum (1), a left fixed pulley block (2), a left movable pulley block (3), a right fixed pulley block (4) and a right movable pulley block (5), it is characterized by also comprising a top impacting buffering assembly (6), wherein the top impacting buffering assembly (6) comprises a first buffering pulley (61) and a second buffering pulley (62) which are rotatably arranged on the supporting frame and are mutually independent, a left steel wire rope (7) and a right steel wire rope (8) which are mutually independent are wound on the winding drum (1), the left steel wire rope (7) is wound on the first buffer pulley (61) after sequentially passing through the left movable pulley block (3) and the left fixed pulley block (2) after being wound out of the winding drum (1), and is fixedly connected with a first buffer pulley (61), the right steel wire rope (8) is wound out of the winding drum (1), then sequentially passes through a right movable pulley block (5) and a right fixed pulley block (4) and then is wound on a second buffer pulley (62), and with second buffering pulley (62) fixed connection, be provided with first friction disc (9) on first buffering pulley (61), be provided with second friction disc (10) on second buffering pulley (62), two friction discs contact each other, still be provided with on second buffering pulley (62) and be used for adjusting the pressure adjustment subassembly (11) of contact extrusion force between two friction discs.

2. The lifting mechanism with the function of buffering in top punching as claimed in claim 1, wherein the pressure adjusting assembly (11) comprises a spring (111), a sleeve (112) and a locking bolt (113), the spring (111) is disposed in the sleeve (112), the locking bolt (113) is disposed at one end of the sleeve (112), a screw portion of the locking bolt (113) passes through the second buffer pulley (62), a nut (12) is disposed on the screw, one end of the spring (111) is connected to the second friction plate (10), and the other end of the spring is connected to the locking bolt (113).

3. A hoisting mechanism with a function of impact top buffering as claimed in claim 1, wherein the left steel wire rope (7) is wound on the first buffering pulley (61) and then fixedly connected with the first rope pressing plate (13) arranged on the first buffering pulley (61).

4. The hoisting mechanism with the function of impacting and buffering is characterized in that the right steel wire rope (8) is wound on the second buffering pulley (62) and then is fixedly connected with a second rope pressing plate (14) arranged on the second buffering pulley (62).

5. The hoisting mechanism with the function of impacting and buffering the top of the container as claimed in claim 1, wherein the first buffering pulley (61) and the second buffering pulley (62) are respectively and rotatably connected with the mounting shaft on the supporting frame through two independent rolling bearings.

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