CN113860165A

CN113860165A - Pulley overhead crane

Info

Publication number: CN113860165A
Application number: CN202111052809.5A
Authority: CN
Inventors: 单士奎; 李广辉; 王树彪; 单光刚
Original assignee: Shandong Boyu Heavy Industry Technology Co ltd
Current assignee: Shandong Boyu Heavy Industry Technology Group Co ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2021-12-31
Anticipated expiration: 2041-09-08
Also published as: CN113860165B

Abstract

The invention discloses a pulley overhead crane, which comprises a bracket, wherein the top of the bracket is provided with a crane body, the crane body comprises a pulley box, a fixed pulley, a pressing device and a lubricating device are arranged in the pulley box, the pressing device comprises a pressing wheel, a rotating frame and a rotating shaft, the rotating shaft is arranged at the upper part of the middle part of the fixed pulley and is connected with one end of the rotating frame through a torsion spring, the other end of the rotating frame is connected with the pressing wheel, the two side edges of the pressing wheel are connected with the two side edges of the fixed pulley in a rolling way, the middle part of the pressing wheel is arranged in a pulley groove of the fixed pulley, the lubricating device comprises an oil tank and an oil cylinder, a plurality of ball holes are arranged on the inner annular wall of the oil tank in a penetrating way, a plurality of groups of oil cylinders are arranged in the oil cylinder, a plurality of oil holes are arranged in the oil cylinder, a spring, a ball table and balls are arranged in the oil cylinder, the spring is connected with the ball table, and balls are arranged in a groove of the ball table, the ball is arranged on the ball hole.

Description

Pulley overhead crane

Technical Field

The invention relates to the technical field of cranes, in particular to a pulley overhead crane.

Background

The crane is a multi-action hoisting machine for vertically lifting and horizontally carrying heavy objects within a certain range, and is also called a crown block, a navigation crane and a crane. The crane is characterized by intermittent movement, namely corresponding mechanisms for taking materials, transporting, unloading and the like in one working cycle work alternately. The bridge crane is a hoisting device which is transversely erected above workshops, warehouses and stock yards for hoisting materials, and two ends of the bridge crane are located on high cement columns or metal supports and are shaped like a bridge. The bridge frame of the bridge crane runs longitudinally along the rails laid on the elevated frames at two sides, so that the space below the bridge frame can be fully utilized to hoist materials without being hindered by ground equipment, and the bridge crane is a crane machine with the widest application range and the largest quantity.

In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art: when an existing crane lifts a heavy object, a steel wire rope needs to be wound and unwound, the situation that the steel wire rope is separated from a pulley can be generated, danger occurs, friction can be generated between the steel wire rope and the pulley when a pressing wheel presses the steel wire rope, meanwhile, friction can be generated between the steel wire rope or between the steel wire rope and a winding drum, certain friction is generated between the steel wire rope and the pulley, the steel wire rope can be damaged by the generated friction, the service life of the steel wire rope is greatly reduced, and therefore resource waste is caused.

Disclosure of Invention

Aiming at the defects of the prior art, the invention develops the crane with the pulley arranged on the top, the invention not only can compress the steel wire rope and prevent the steel wire rope from falling off, but also can uniformly and efficiently coat lubricating oil on the steel wire rope, thereby effectively reducing the friction force and prolonging the service life of the steel wire rope of the crane.

The technical scheme for solving the technical problem of the invention is as follows: the utility model provides a pulley overhead crane, includes the support, the support top is provided with the hoist body, the hoist body includes the pulley box, pulley box inside is provided with fixed pulley, closing device and lubricating arrangement, the fixed pulley is provided with two, presses close to one side pulley box inner wall respectively, closing device includes pinch roller, swivel mount and pivot, the pivot sets up upper portion in the middle of the fixed pulley, is connected with swivel mount one end through the torsional spring, and the swivel mount other end is connected with the pinch roller, pinch roller both sides edge and fixed pulley both sides edge roll meet, the middle part sets up in the pulley groove of fixed pulley, lubricating arrangement includes oil tank and oil cylinder, the oil tank is the semicircle ring form, runs through on the interior rampart of oil tank and is provided with a plurality of ball hole, and inside is provided with a plurality of oil cylinder of group, is provided with a plurality of oilhole on the oil cylinder, and inside is provided with spring, oil cylinder, Ball platform and ball, spring and ball platform are connected, are provided with the ball in the recess of ball platform, and the ball sets up on the ball hole.

Preferably, the number of the groups of the pressing devices is two, and the two groups of the pressing devices are respectively connected with the two fixed pulleys.

Preferably, the ball holes are uniformly formed in the inner annular wall of the oil tank, and the oil cylinders are radially and uniformly arranged in the oil tank.

As optimization, a pulley overhead crane still includes the lifting hook, the lifting hook includes mounting panel, movable pulley and coupler body setting are between the mounting panel, and the movable pulley is provided with two sets ofly, is close to a side-mounting panel respectively, the coupler body sets up lower part in the middle of the movable pulley.

Preferably, the two groups of fixed pulleys are respectively arranged below the two groups of movable pulleys in a staggered manner.

Preferably, the inner walls of the two sides of the pulley box are respectively provided with a buckle which is connected with one end of a steel wire rope, the other end of the steel wire rope downwards winds around the movable pulley on the same side, upwards penetrates out of a gap between the pinch roller on the other side and the fixed pulley, and then penetrates through the lubricating device to be connected with the winding drum.

Preferably, the inner diameter of the oil cylinder is larger than the diameter of the ball table, the inner wall of the oil cylinder is provided with a linear slide rail, the edge of the ball table is provided with a sliding groove, and the sliding groove is arranged on the linear slide rail.

As optimization, the top of the oil tank is provided with an oil filling hole, and the inner annular wall is further provided with an oil brush.

The effect provided in the summary of the invention is only the effect of the embodiment, not all the effects of the invention, and the technical scheme has the following advantages or beneficial effects:

the pressing device is arranged, so that the steel wire rope can be pressed, and the steel wire rope is prevented from falling off from the fixed pulley; through the arrangement of the rotating frame, the pressing wheel can be pressed tightly under the action of the torsion spring; the two side edges of the pinch roller are connected with the two side edges of the fixed pulley in a rolling way, and the middle part of the pinch roller is arranged in the pulley groove of the fixed pulley, so that the friction between the middle part of the pinch roller and the pulley groove of the fixed pulley can be prevented, and the service life is prolonged; the lubricating device is arranged, so that the steel wire rope can be lubricated, and the service life of the steel wire rope is prolonged; the lubricating oil can be stored by arranging the oil tank; the ball holes are arranged, so that the balls can rotate to release lubricating oil; the positions of the spring, the ball table and the balls can be limited by arranging the oil cylinder; by arranging the oil hole, lubricating oil can enter and exit the oil cylinder and is smeared on the steel wire rope through the ball; the invention not only can compress the steel wire rope to prevent the steel wire rope from falling off, but also can uniformly and efficiently coat lubricating oil on the steel wire rope, thereby effectively reducing friction force and prolonging the service life of the crane steel wire rope.

Drawings

FIG. 1 is an overall schematic diagram of one embodiment of the present invention.

Fig. 2 is a schematic view of a crane body according to an embodiment of the invention.

Fig. 3 is a schematic view of the internal structure of the pulley box and the hook according to an embodiment of the present invention.

Figure 4 is a side view of a sheave box according to one embodiment of the present invention.

Fig. 5 is a schematic view of a pressing device according to an embodiment of the present invention.

Fig. 6 is a schematic view of a lubricating apparatus according to an embodiment of the present invention.

Fig. 7 is a schematic view of an internal structure of a lubricating device according to an embodiment of the present invention.

Fig. 8 is a schematic view of a connection relationship between an oil cylinder and a ball table according to an embodiment of the present invention.

Fig. 9 is a schematic structural diagram of an oil cartridge according to an embodiment of the present invention.

FIG. 10 is a side view of a hook according to one embodiment of the present invention.

In the figure, 1, a support, 2, a crane body, 3, a lifting device, 4, a traveling device, 5, a winding drum, 6, a gearbox, 7, a bearing frame, 8, a pulley box, 9, a fixed pulley, 10, a pressing device, 10-1, a pressing wheel, 10-2, a rotating frame, 10-3, a rotating shaft, 11, a lubricating device, 11-1, an oil tank, 11-2, an oil cylinder, 11-3, a ball hole, 11-4, an oil hole, 11-5, a spring, 11-6, a ball table, 11-7, a ball, 11-8, a linear sliding rail, 11-9, a sliding groove, 11-10, an oil filling hole, 12, a lifting hook, 12-1, a mounting plate, 12-2, a movable pulley, 12-3, a hook body, 13, a buckle and 14 steel wire ropes are arranged.

Detailed Description

In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides embodiments or examples to implement the structures of the present invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and procedures are omitted so as to not unnecessarily limit the invention. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 to 10 show an embodiment of the invention, and as shown in the figures, a pulley-top crane comprises a support 1, a crane body 2 is arranged on the top of the support 1, the crane body 2 comprises a lifting device 3 and a traveling device 4, the traveling device 4 is arranged on two sides of the lifting device 3, the lifting device 3 comprises a winding drum 5, a gearbox 6, a lifting motor and a pulley box 8, one end of the winding drum 5 is arranged on the traveling device 4 on two sides through a bearing frame 7, the other end of the winding drum is connected with the lifting motor through the gearbox 6, the pulley box 8 is arranged between the traveling devices 4, a fixed pulley 9, a pressing device 10 and a lubricating device 11 are arranged inside the winding drum, two fixed pulleys 9 are arranged and respectively close to the inner wall of the pulley box 8 on one side, the pressing device 10 comprises a pressing wheel 10-1, a rotating frame 10-2 and a rotating shaft 10-3, the rotating shaft 10-3 is arranged at the upper part of the middle of the fixed pulley 9 and is connected with one end of a rotating frame 10-2 through a torsion spring, the other end of the rotating frame 10-2 is connected with a pressing wheel 10-1, the diameters of the two side edges of the pressing wheel 10-1 are smaller than that of the middle part, the two side edges are connected with the two side edges of the fixed pulley 9 in a rolling way, the middle part is arranged in a pulley groove of the fixed pulley 9 and is provided with a gap, the lubricating device 11 comprises two groups of oil tanks 11-1 and oil cylinders 11-2, the oil tank 11-1 is in a semicircular ring shape, one end of each of the two groups of oil tanks 11-1 is connected through a loose leaf, the other end of each of the two groups of oil tanks is connected through a lock catch, a plurality of ball holes 11-3 are arranged on the inner ring wall of the oil tank 11-1 in a penetrating manner, the outer ring wall is connected with the pulley box 8 through a plurality of connecting pieces, and a plurality of oil cylinders 11-2 are arranged inside the outer ring, the oil cylinder 11-2 is provided with a plurality of oil holes 11-4, the oil cylinder 11-2 is internally provided with a spring 11-5, a ball table 11-6 and balls 11-7, the spring 11-5 is connected with the ball table 11-6, the grooves of the ball table 11-6 are internally provided with the balls 11-7, and the balls 11-7 are arranged on the ball holes 11-3.

By arranging the pressing device 10, the steel wire rope 14 can be pressed, and the steel wire rope is prevented from falling off from the fixed pulley 9; the rotary frame 10-2 is arranged, so that the pressing wheel 10-1 can be pressed tightly under the action of the torsion spring; the two side edges of the pinch roller 10-1 are connected with the two side edges of the fixed pulley 9 in a rolling way, and the middle part of the pinch roller is arranged in the pulley groove of the fixed pulley 9, so that the friction between the middle part of the pinch roller 10-1 and the pulley groove of the fixed pulley 9 can be prevented, and the service life is prolonged; by arranging the lubricating device 11, the steel wire rope 14 can be lubricated, and the service life of the steel wire rope 14 is prolonged; the oil tank 11-1 is arranged to store lubricating oil; the ball 11-7 can rotate to release lubricating oil by arranging the ball hole 11-3; the positions of the spring 11-5, the ball table 11-6 and the ball 11-7 can be limited by arranging the oil cylinder 11-2; by arranging the oil hole 11-4, lubricating oil can enter and exit the oil cylinder 11-2 and is coated on the steel wire rope 14 through the ball 11-7.

Two groups of the pressing devices 10 are arranged and are respectively connected with the two fixed pulleys 9.

The ball holes 11-3 are uniformly arranged on the inner annular wall of the oil tank 11-1, and the oil cylinders 11-2 are uniformly arranged in the oil tank 11-1 in a radial shape. By uniformly arranging the oil cylinder 11-2 and the ball holes 11-3, lubricating oil can be uniformly coated on the steel wire rope 14.

The pulley overhead crane further comprises a lifting hook 12, wherein the lifting hook 12 comprises mounting plates 12-1, movable pulleys 12-2 and hook bodies 12-3, the movable pulleys 12-2 and the hook bodies 12-3 are arranged between the mounting plates 12-1, two groups of movable pulleys 12-2 are arranged and respectively close to the mounting plate 12-1 on one side, and the hook bodies 12-3 are arranged on the lower middle part of the movable pulleys 12-2.

The two groups of fixed pulleys 9 are respectively arranged below the two groups of movable pulleys 12-2 in a staggered manner. Two groups of fixed pulleys 9 are respectively arranged below two groups of movable pulleys 12-2 in a staggered mode, so that the steel wire rope 14 cannot be rubbed and entangled in the working process.

The inner walls of two sides of the pulley box 8 are respectively provided with a buckle 13, the buckle 13 is connected with one end of a steel wire rope 14, the other end of the steel wire rope 14 downwards winds around a movable pulley 12-2 on the same side, then upwards penetrates out of a gap between a pinch roller 10-1 on the other side and a fixed pulley 9, and then penetrates through a lubricating device 11 to be connected with the other end of the winding drum 5.

The inner diameter of the oil cylinder 11-2 is larger than the diameter of the ball table 11-6, the inner wall of the oil cylinder 11-2 is at least provided with a linear slide rail 11-8, the edge of the ball table 11-6 is at least provided with a sliding groove 11-9, and the sliding groove 11-9 is arranged on the linear slide rail 11-8. The inner diameter of the oil cylinder 11-2 is larger than the diameter of the ball table 11-6, so that a gap exists between the oil cylinder 11-2 and the ball table 11-6, and lubricating oil can flow in the oil cylinder 11-2; the ball table 11-6 can be stably moved by arranging the linear slide rail 11-8 and the slide groove 11-9.

The top of the oil tank 11-1 is provided with an oil filling hole 11-4, and the inner annular wall is also provided with an oil brush. Lubricating oil can be supplemented by arranging the oil filling holes 11-10; by providing the oil brush, the lubricating oil on the wire rope 14 can be uniformly applied.

When the invention works, two groups of fixed pulleys 9 of a lifting hook 12 are respectively arranged below two groups of movable pulleys 12-2 in a pulley box 8 in a staggered manner, the left fixed pulley 9 and the left movable pulley 12-2 are respectively close to the inner wall of the front side of the pulley box 8 and a mounting plate 12-1 at the rear side of the lifting hook 12, the right fixed pulley 9 and the right movable pulley 12-2 are respectively close to the inner wall of the rear side of the pulley box 8 and the mounting plate 12-1 at the front side of the lifting hook 12, a left buckle 13 is connected with one end of a left steel wire rope 14, the other end of the left steel wire rope 14 downwards rounds the left movable pulley 12-2, then the steel wire rope penetrates out of the gap between the pressing wheel 10-1 and the fixed pulley 9 on the other side upwards, and then penetrates through the lubricating device 11 to be connected with the other end of the winding drum 5, the connection mode of the steel wire rope 14 on the right side is opposite to that on the left side, and the steel wire ropes 14 on the left side and the right side cannot generate friction; when a heavy object is lifted, the lifting motor rotates, the speed is reduced through the gearbox 6, the winding drum 5 is driven to rotate, and the winding drum 5 winds and unwinds the left and right steel wire ropes 14, so that the heavy object is lifted; in the process, the steel wire rope 14 is pressed to prevent the steel wire rope from falling off from the fixed pulley 9, the rotating frame 10-2 presses the pressing wheel 10-1 to the fixed pulley 9 under the action of the torsion spring, the two side edges of the pressing wheel 10-1 are in rolling connection with the two side edges of the fixed pulley 9, the middle part of the pressing wheel 10-1 is arranged in a pulley groove of the fixed pulley 9, the steel wire rope 14 is limited in position and cannot be separated from the fixed pulley 9, and the lifting hook 12 can also be provided with the pressing device 10 for pressing the steel wire rope 14 in the movable pulley 12-2; the steel wire rope 14 penetrates through the lubricating device 11 in the winding and unwinding processes, the lubricating device 11 can shift in the pulley box 8 in a small range under the action of a connecting piece to adapt to position change of the steel wire rope 14, lubricating oil in the oil tank 11-1 enters the oil cylinder 11-2 through the oil hole 11-4 and penetrates through a gap between the ball table 11-6 and the oil cylinder 11-2 to be in contact with the ball 11-7, the ball 11-7 rolls on the steel wire rope 14 in a fluctuating mode under the action of the spring 11-5, the internal lubricating oil is uniformly coated on the steel wire rope 14, the ball table 11-6 supports the ball 11-7 all the time, an oil brush on the inner annular wall of the oil tank 11-1 uniformly coats the lubricating oil, the lubricating effect is better, friction is greatly reduced, and the service life of the steel wire rope 14 is effectively prolonged.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, the scope of the present invention is not limited thereto, and various modifications and variations which do not require inventive efforts and which are made by those skilled in the art are within the scope of the present invention.

Claims

1. The utility model provides a pulley overhead crane, includes support (1), characterized by: the crane comprises a support (1), wherein the top of the support (1) is provided with a crane body (2), the crane body (2) comprises a pulley box (8), a fixed pulley (9), a pressing device (10) and a lubricating device (11) are arranged in the pulley box (8), two fixed pulleys (9) are arranged and are respectively close to the inner wall of the pulley box (8) on one side, the pressing device (10) comprises a pressing wheel (10-1), a rotating frame (10-2) and a rotating shaft (10-3), the rotating shaft (10-3) is arranged on the upper middle part of the fixed pulley (9) and is connected with one end of the rotating frame (10-2) through a torsion spring, the other end of the rotating frame (10-2) is connected with the pressing wheel (10-1), the edges on the two sides of the pressing wheel (10-1) are connected with the edges on the two sides of the fixed pulley (9) in a rolling manner, the middle part of the pressing wheel (10-1) is arranged in a pulley groove of the fixed pulley (9), the lubricating device (11) comprises an oil tank (11-1) and an oil cylinder (11-2), the oil tank (11-1) is semicircular, a plurality of ball holes (11-3) are formed in the inner annular wall of the oil tank (11-1) in a penetrating mode, a plurality of groups of oil cylinders (11-2) are arranged inside the oil tank, a plurality of oil holes (11-4) are formed in the oil cylinder (11-2), a spring (11-5), a ball table (11-6) and balls (11-7) are arranged inside the oil cylinder (11-2), the spring (11-5) is connected with the ball table (11-6), the balls (11-7) are arranged in a groove of the ball table (11-6), and the balls (11-7) are arranged on the ball holes (11-3).

2. The overhead sheave crane of claim 1, wherein: two groups of the pressing devices (10) are arranged and are respectively connected with the two fixed pulleys (9).

3. The overhead sheave crane of claim 1, wherein: the ball holes (11-3) are uniformly arranged on the inner annular wall of the oil tank (11-1), and the oil cylinders (11-2) are radially and uniformly arranged in the oil tank (11-1).

4. The overhead sheave crane of claim 1, wherein: the pulley overhead crane further comprises a lifting hook (12), wherein the lifting hook (12) comprises mounting plates (12-1), movable pulleys (12-2) and hook bodies (12-3), the movable pulleys (12-2) and the hook bodies (12-3) are arranged between the mounting plates (12-1), two groups of movable pulleys (12-2) are arranged and are respectively close to the mounting plates (12-1) on one side, and the hook bodies (12-3) are arranged on the lower middle portion of the movable pulleys (12-2).

5. The overhead sheave crane according to any one of claims 1 to 4, wherein: the two groups of fixed pulleys (9) are respectively arranged below the two groups of movable pulleys (12-2) in a staggered manner.

6. The overhead sheave crane according to any one of claims 1 to 5, wherein: the pulley box is characterized in that buckles (13) are respectively arranged on the inner walls of two sides of the pulley box (8), the buckles (13) are connected with one end of a steel wire rope (14), the other end of the steel wire rope (14) downwards winds around a movable pulley (12-2) on the same side, upwards penetrates out of a gap between a pressing wheel (10-1) on the other side and a fixed pulley (9), and penetrates through a lubricating device (11) to be connected with the other end of the winding drum (5).

7. The overhead sheave crane of claim 1, wherein: the inner diameter of the oil cylinder (11-2) is larger than the diameter of the ball table (11-6), the inner wall of the oil cylinder (11-2) is provided with a linear slide rail (11-8), the edge of the ball table (11-6) is provided with a sliding chute (11-9), and the sliding chute (11-9) is arranged on the linear slide rail (11-8).

8. The overhead sheave crane of claim 1, wherein: the top of the oil tank (11-1) is provided with an oil filling hole (11-10), and the inner annular wall is also provided with an oil brush.