CN114148935B

CN114148935B - Hoist protection device of crane

Info

Publication number: CN114148935B
Application number: CN202210119481.2A
Authority: CN
Inventors: 王盛楠; 李兴才
Original assignee: Jiangsu Great Hosisting Machinery Co ltd
Current assignee: Jiangsu Great Hosisting Machinery Co ltd
Priority date: 2022-02-09
Filing date: 2022-02-09
Publication date: 2022-04-22
Anticipated expiration: 2042-02-09
Also published as: CN114148935A

Abstract

The invention discloses a crane hoisting protection device, and relates to the technical field of hoisting cranes; for the purpose of overwind protection; the automatic winding device comprises a mounting frame, wherein a motor is fixed on the outer wall of one side of the mounting frame through a motor base, a winding wheel is connected to the rotation of the output end of the motor, adjusting sleeves are fixed on the outer walls of two sides of the mounting frame, fixing supports are installed in the adjusting sleeves, guide rods are fixed at the tops of the two fixing supports, a supporting plate is connected to the outer wall of each guide rod in a sliding mode, a limiting head is fixed on the outer wall of the top of each guide rod, a spring is fixed between the limiting head and the supporting plate, and a conducting ring is installed on the outer wall of the bottom of the supporting plate in an embedded mode. According to the invention, the spherical protection block, the spherical sliding seat and the protection cover are arranged, so that the steel wire rope can pass through the rope hole of the spherical protection block in advance, the spherical protection block and the protection cover can protect the steel wire rope to a certain extent, and the spherical protection block can flexibly rotate in the spherical sliding seat, so that the steel wire rope is prevented from being stuck or damaged due to overlarge stress.

Description

Hoist protection device of crane

Technical Field

The invention relates to the technical field of hoisting cranes, in particular to a hoisting protection device of a crane.

Background

A winch, a light and small hoisting device for hoisting or pulling heavy objects by winding a steel wire rope or a chain on a winding drum, which is also called a winch; the winch can vertically lift, horizontally or obliquely drag heavy objects; the winch can be used independently, can also be used as a component part in machinery such as hoisting, road building, mine hoisting and the like, and is widely applied due to simple operation, large rope winding amount and convenient displacement; the lifting device is mainly applied to material lifting or horizontal dragging of buildings, hydraulic engineering, forestry, mines, wharfs and the like; the existing windlass may have overwinding phenomenon due to various reasons in the using process, and other accidents such as device damage and the like are caused, so the improvement is still needed.

Through the retrieval, chinese patent application number is CN 201921193735.5's patent, discloses a disk hoist engine, the on-line screen storage device comprises a base, the both sides of base top intermediate position department all are equipped with the baffle, and two sets of the inboard of baffle all rotates and installs the carousel, the inboard of carousel is equipped with the mounting disc, and is equipped with the fagging on the lateral wall of mounting disc, and is two sets of be equipped with the reel between the mounting disc, and the equidistance is equipped with the closed assembly piece on the lateral wall of reel, and is a set of the outside of baffle is equipped with the reduction gear, and the reduction gear is with a set of the carousel is connected, one side of reduction gear is equipped with the rotating electrical machines, and the output of rotating electrical machines with retarder connection. The hoist in the above patent has the following disadvantages: although the anti-overwinding device can meet certain use requirements, the problem of overwinding prevention is still to be improved.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a crane hoisting protection device.

In order to achieve the purpose, the invention adopts the following technical scheme:

a hoist protection device of a crane comprises a mounting frame, wherein a motor is fixed on the outer wall of one side of the mounting frame through a motor base, the output end of the motor is rotatably connected with a hoist wheel, adjusting sleeves are fixed on the outer walls of two sides of the mounting frame, fixing supports are installed in the adjusting sleeves, guide rods are fixed on the tops of the two fixing supports, the outer wall of each guide rod is slidably connected with a support plate, a limiting head is fixed on the outer wall of the top of each guide rod, a spring is fixed between each limiting head and each support plate, a conducting ring is installed on the outer wall of the bottom of each support plate in an embedded mode, and two conducting strips matched with the conducting ring in position are installed on the outer wall of the top of each fixing support in an embedded mode; mounting bracket one side is provided with the control unit, and control unit and motor and two conducting strip electric connection are fixed with same fender bracket between two backup pads, fender bracket both sides inner wall sliding connection has the slider, is fixed with same safety cover between the slider, and the safety cover is the fill type structure, and the ball-type slide is installed to the safety cover bottom, rotatable ball-type protection piece of installing in the ball-type slide, and the rope hole that supplies wire rope to pass is seted up at ball-type protection piece top.

Preferably: two the spout of looks adaptation is seted up to slider one side outer wall and fender bracket both sides inner wall, and roll connection has evenly distributed's ball in the spout of slider, and the slider passes through the ball and slides in the spout of fender bracket.

Further: the alarm is fixed on the outer wall of one side of the mounting frame and electrically connected with the conducting strip and the control unit.

Further preferred is: the fixed support is connected to the inner wall of one end of the adjusting sleeve in a sliding mode, and the outer wall of one side of the fixed support and the outer wall of one side of the adjusting sleeve are provided with matched pin holes; the pin holes are detachably inserted with positioning pins, and the positioning pins are hexagonal prism structures.

As a preferable aspect of the present invention: the inner wall of the bottom of the protective cover is rotatably connected with a slip ring.

Further preferred as the invention: and an extension leg is fixed on the outer wall of one side of the mounting rack.

As a still further scheme of the invention: the spherical slide seat comprises a first semispherical seat and a second semispherical seat, connecting plates are arranged at two ends of the first semispherical seat and two ends of the second semispherical seat, reinforcing ribs are arranged on the first semispherical seat and the second semispherical seat, the connecting plates on two sides of the first semispherical seat are detachably mounted on the connecting plates of the second semispherical seat through bolts, mounting rods are arranged on the outer walls of the tops of the reinforcing ribs, mounting seats are arranged on the side walls of the bottoms of the protective covers, and the mounting rods are fixed in the mounting seats through bolts.

On the basis of the scheme: the spherical protection block comprises a first hemispherical block and a second hemispherical block, an inserting column is arranged on the outer wall of one side of the first hemispherical block, a spherical protrusion is bonded to one end of the inserting column, a spherical cavity matched with the spherical protrusion is formed in the inner wall of one side of the second hemispherical block, and the first hemispherical block is detachably mounted in the spherical cavity of the second hemispherical block through the spherical protrusion.

The invention has the beneficial effects that:

1. according to the invention, by arranging the spherical protection block, the spherical sliding seat and the protection cover, the steel wire rope can pass through the rope hole of the spherical protection block in advance, the spherical protection block and the protection cover can protect the steel wire rope to a certain extent, and the spherical protection block can flexibly rotate in the spherical sliding seat, so that the steel wire rope is prevented from being stuck or damaged due to overlarge stress; during the rolling, owing to set up conducting ring and conducting strip, the conducting ring can make the circuit switch-on between two conducting strips when contacting with the conducting strip, thereby make the motor work normally, when the rolling reaches the certain degree, the object rises and holds up the ball-type protection piece, thereby make the fender bracket held up, the backup pad upwards slides along the guide bar under spring deformation, and then conducting ring and two conducting strip separation, make conducting strip circuit disconnection, the stop work of control unit and its control motor, reach the purpose of preventing the overwinding, the reliability has been promoted.

2. By arranging the balls, the sliding smoothness is improved, the protective cover is prevented from being damaged due to extrusion of the steel wire rope in the process of lifting a heavy object, and the reliability is improved; through setting up the alarm, can be when the conducting strip disconnection, the control unit synchro control alarm work reports to the police.

3. By arranging the positioning pin, the position of the fixing support arranged in the adjusting sleeve can be adjusted according to actual requirements, and the positioning pin is inserted for fixing, so that the use flexibility is improved; through setting up the sliding ring, can reduce the frictional condition of wire rope and safety cover inner wall, promote reliability and life.

4. By arranging the structures such as the first half ball seat and the second half ball seat, the disassembly and maintenance can be facilitated, and the practicability is improved; through setting up first hemisphere piece and second hemisphere piece isotructure, can convenient to detach maintain, promoted the practicality.

Drawings

Fig. 1 is a schematic structural diagram of an integral crane hoisting protection device provided by the invention;

fig. 2 is a schematic structural diagram of the other side of the crane hoisting protection device provided by the invention;

fig. 3 is a schematic structural view of a cross section of a protective frame of a crane hoisting protection device provided by the invention;

FIG. 4 is a schematic structural view of a split and sectioned supporting plate and a fixed bracket of a crane hoisting protection device provided by the invention;

FIG. 5 is a schematic structural view of a split protective cover and a spherical sliding seat of a crane hoisting protection device according to the present invention;

fig. 6 is a schematic structural diagram of a split structure of a spherical sliding seat and a spherical protection block of a crane hoisting protection device provided by the invention.

In the figure: 1. a mounting frame; 2. a motor; 3. a hoisting wheel; 4. a protective cover; 5. a spherical slide seat; 6. a protection frame; 7. extending the legs; 8. fixing a bracket; 9. an adjustment sleeve; 10. positioning pins; 11. a pin hole; 12. an alarm; 13. a limiting head; 14. a chute; 15. a slider; 16. a ball bearing; 17. a spherical protection block; 18. conducting rings; 19. a support plate; 20. a spring; 21. a guide bar; 22. a conductive sheet; 23. a mounting seat; 24. a slip ring; 25. a rope hole; 26. mounting a rod; 27. reinforcing ribs; 28. a first half ball seat; 29. a spherical bulge; 30. inserting the column; 31. a first hemispherical block; 32. a second half ball seat; 33. a ball cavity; 34. a second hemispherical block; 35. a connecting plate.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1:

a hoist protection device of a crane is shown in figures 1-6 and comprises a mounting frame 1, wherein a motor 2 is fixed on the outer wall of one side of the mounting frame 1 through a motor base, the output end of the motor 2 is rotatably connected with a hoist wheel 3, adjusting sleeves 9 are welded on the outer walls of two sides of the mounting frame 1, fixing supports 8 are installed in the adjusting sleeves 9, guide rods 21 are fixed on the tops of the two fixing supports 8 through screws, the outer wall of each guide rod 21 is slidably connected with a support plate 19, a limiting head 13 is fixed on the outer wall of the top of each guide rod 21 through screws, a spring 20 is fixed between each limiting head 13 and the corresponding support plate 19, a conducting ring 18 is installed on the outer wall of the bottom of each support plate 19 in an embedded mode, and two conducting strips 22 matched with the conducting rings 18 in position are installed on the outer wall of the top of each fixing support 8 in an embedded mode; a control unit is arranged on one side of the mounting frame 1 and is electrically connected with the motor 2 and the two conducting strips 22, the same protection frame 6 is fixed between the two supporting plates 19, the inner walls of the two sides of the protection frame 6 are connected with sliding blocks 15 in a sliding manner, the same protection cover 4 is fixed between the sliding blocks 15, the protection cover 4 is of a bucket-shaped structure, a spherical sliding seat 5 is installed at the bottom of the protection cover 4, a spherical protection block 17 is rotatably installed in the spherical sliding seat 5, and a rope hole 25 for a steel wire rope to pass through is formed in the top of the spherical protection block 17; the motor 2 and the hoisting wheel 3 are arranged to meet the requirement of basic winding and hoisting work, the spherical protection block 17, the spherical sliding seat 5 and the protection cover 4 are arranged, a steel wire rope can pass through a rope hole 25 of the spherical protection block 17 in advance, the spherical protection block 17 and the protection cover 4 can protect the steel wire rope to a certain degree, and the spherical protection block 17 can flexibly rotate in the spherical sliding seat 5 to avoid being blocked or damaged due to overlarge stress; during the rolling, owing to set up conducting ring 18 and conducting strip 22, conducting ring 18 can make the circuit switch-on between two conducting strips 22 when contacting conducting strip 22, thereby make motor 2 can normally work, when the rolling reaches the certain degree, the object rises and holds up ball-type protection piece 17, thereby make fender bracket 6 held up, backup pad 19 is along guide bar 21 upwards sliding under spring 20 deformation, and then conducting ring 18 and two conducting strips 22 separation, make conducting strip 22 circuit disconnection, the stop work of control unit and its control motor 2, reach the purpose of preventing the overwinding, the reliability has been promoted.

In order to improve the sliding fluency; as shown in fig. 3, the outer wall of one side of each of the two sliding blocks 15 and the inner wall of the two sides of the protection frame 6 are provided with sliding grooves 14 which are matched with each other, the sliding grooves 14 of the sliding blocks 15 are connected with balls 16 which are uniformly distributed in a rolling manner, and the sliding blocks 15 slide in the sliding grooves 14 of the protection frame 6 through the balls 16; through setting up ball 16, promoted gliding smoothness degree, avoided safety cover 4 to be carried the wire rope extrusion of pulling the heavy object in-process and damage, promoted the reliability.

To facilitate alarming; as shown in fig. 2, an alarm 12 is fixed on the outer wall of one side of the mounting rack 1 through screws, and the alarm 12 is electrically connected with the conducting strip 22 and the control unit; by arranging the alarm 12, when the conducting strip 22 is disconnected, the control unit synchronously controls the alarm 12 to work to give an alarm.

To facilitate adjustment of the mounting position of the fixing bracket 8; as shown in fig. 1-4, the fixed bracket 8 is slidably connected to an inner wall of one end of the adjusting sleeve 9, and a pin hole 11 matched with the outer wall of one side of the fixed bracket 8 and the outer wall of one side of the adjusting sleeve 9 is formed in the outer wall of one side of the fixed bracket 8; a positioning pin 10 is detachably inserted in the pin hole 11, and the positioning pin 10 is of a hexagonal prism structure; through setting up locating pin 10, can adjust the position that fixed bolster 8 installed in adjusting sleeve 9 according to actual demand to insert locating pin 10 and fix, promoted the flexibility of using.

In order to improve reliability; as shown in fig. 5, a slip ring 24 is rotatably connected to the inner wall of the bottom of the protective cover 4; through setting up sliding ring 24, can reduce the condition of wire rope with the friction of 4 inner walls of safety cover, promote reliability and life.

In order to improve the structural firmness, as shown in fig. 3, an extension leg 7 is welded to the outer wall of one side of the mounting frame 1; by providing the extension legs 7, the stability of the support is improved.

When the steel wire rope protection device is used, a user enables the steel wire rope to pass through the rope hole 25 of the spherical protection block 17 in advance, the spherical protection block 17 and the protection cover 4 can protect the steel wire rope to a certain degree, and the spherical protection block 17 can flexibly rotate in the spherical sliding seat 5, so that the steel wire rope is prevented from being stuck or damaged due to overlarge stress; during the rolling, owing to set up conducting ring 18 and conducting strip 22, conducting ring 18 can make the circuit switch-on between two conducting strips 22 when contacting with conducting strip 22, thereby make motor 2 can normally work, when the rolling reaches the certain degree, the object rises and holds up ball-type protection piece 17, thereby make fender bracket 6 held up, backup pad 19 slides upwards along guide bar 21 under spring 20 deformation, and then conducting ring 18 and two conducting strips 22 separation, make conducting strip 22 circuit disconnection, the stop work of control unit and its control motor 2, and control alarm 12 reports to the police, reach the mesh of preventing the overwinding, the reliability has been promoted.

Example 2:

a hoist protection device of a crane is shown in figures 5 and 6, and is convenient to disassemble and maintain; the present embodiment is modified from embodiment 1 as follows: the spherical sliding seat 5 comprises a first half ball seat 28 and a second half ball seat 32, connecting plates 35 are integrally arranged at two ends of the first half ball seat 28 and the second half ball seat 32, reinforcing ribs 27 are integrally arranged on the first half ball seat 28 and the second half ball seat 32, the connecting plates 35 at two sides of the first half ball seat 28 are detachably arranged on the connecting plates 35 of the second half ball seat 32 through bolts, an installation rod 26 is integrally arranged on the outer wall of the top of each reinforcing rib 27, an installation seat 23 is integrally arranged on the side wall of the bottom of the protection cover 4, and the installation rod 26 is fixed in the installation seat 23 through bolts; through setting up first half ball seat 28, second half ball seat 32 isotructure, the dismantlement that can be convenient is maintained, has promoted the practicality.

In order to facilitate the detachment of the spherical protection block 17, as shown in fig. 6, the spherical protection block 17 includes a first hemispherical block 31 and a second hemispherical block 34, an insertion column 30 is integrally arranged on an outer wall of one side of the first hemispherical block 31, a spherical protrusion 29 is bonded to one end of the insertion column 30, a spherical cavity 33 matched with the spherical protrusion 29 is formed on an inner wall of one side of the second hemispherical block 34, and the first hemispherical block 31 is detachably mounted in the spherical cavity 33 of the second hemispherical block 34 through the spherical protrusion 29; through setting up first hemisphere piece 31 and second hemisphere piece 34 isotructure, can convenient to detach maintain, promoted the practicality.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, which is defined by the claims and their equivalents, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.

Claims

1. A hoist protection device of a crane comprises a mounting rack (1) and is characterized in that, a motor (2) is fixed on the outer wall of one side of the mounting rack (1) through a motor base, the output end of the motor (2) is rotatably connected with a hoisting wheel (3), adjusting sleeves (9) are fixed on the outer walls of two sides of the mounting rack (1), fixing supports (8) are installed in the adjusting sleeves (9), guide rods (21) are fixed on the tops of the two fixing supports (8), supporting plates (19) are connected on the outer walls of the guide rods (21) in a sliding mode, limiting heads (13) are fixed on the outer walls of the tops of the guide rods (21), springs (20) are fixed between the limiting heads (13) and the supporting plates (19), the outer wall of the bottom of the supporting plate (19) is provided with a conducting ring (18) in an embedded mode, and the outer wall of the top of the fixed support (8) is provided with two conducting strips (22) matched with the conducting ring (18) in position in an embedded mode; mounting bracket (1) one side is provided with the control unit, and the control unit is fixed with same fender bracket (6) with motor (2) and two conducting strip (22) electric connection between two backup pad (19), fender bracket (6) both sides inner wall sliding connection has slider (15), is fixed with same safety cover (4) between slider (15), and safety cover (4) are hopper type structure, and ball-type slide (5) are installed to safety cover (4) bottom, and rotatable ball-type protective block (17) of installing in ball-type slide (5), rope hole (25) that supply wire rope to pass are seted up at ball-type protective block (17) top.

2. The hoisting protection device of the crane according to claim 1, wherein the outer wall of one side of the two sliding blocks (15) and the inner walls of the two sides of the protection frame (6) are provided with sliding grooves (14) which are matched with each other, the sliding grooves (14) of the sliding blocks (15) are connected with uniformly distributed balls (16) in a rolling manner, and the sliding blocks (15) slide in the sliding grooves (14) of the protection frame (6) through the balls (16).

3. The hoisting protection device of the crane as claimed in claim 2, wherein the alarm (12) is fixed on the outer wall of one side of the mounting frame (1), and the alarm (12) is electrically connected with the conducting strip (22) and the control unit.

4. The hoisting protection device of the crane according to claim 3, wherein the fixed support (8) is slidably connected to the inner wall of one end of the adjusting sleeve (9), and the outer wall of one side of the fixed support (8) and the outer wall of one side of the adjusting sleeve (9) are provided with matched pin holes (11); the pin hole (11) is internally detachably inserted with a positioning pin (10), and the positioning pin (10) is of a hexagonal prism structure.

5. Hoist protection device for cranes according to claim 4, characterized in that the inner wall of the bottom of the protective cover (4) is rotatably connected with a slip ring (24).

6. Hoist protection device for cranes according to claim 5, characterized in that the outer wall of one side of the mounting frame (1) is fixed with an extension leg (7).

7. The hoist protection device of the crane according to any one of claims 1 to 6, wherein the ball-shaped sliding seat (5) comprises a first half ball seat (28) and a second half ball seat (32), connecting plates (35) are arranged at two ends of the first half ball seat (28) and the second half ball seat (32), reinforcing ribs (27) are arranged on the first half ball seat (28) and the second half ball seat (32), the connecting plates (35) at two sides of the first half ball seat (28) are detachably arranged on the connecting plates (35) of the second half ball seat (32) through bolts, a mounting rod (26) is arranged on the outer wall of the top of each reinforcing rib (27), a mounting seat (23) is arranged on the side wall of the bottom of the protective cover (4), and the mounting rod (26) is fixed in the mounting seat (23) through bolts.

8. The hoist protection device of the crane according to claim 7, wherein the ball-shaped protection block (17) comprises a first half ball block (31) and a second half ball block (34), an insertion column (30) is arranged on the outer wall of one side of the first half ball block (31), a ball-shaped protrusion (29) is bonded to one end of the insertion column (30), a ball-shaped cavity (33) matched with the ball-shaped protrusion (29) is formed in the inner wall of one side of the second half ball block (34), and the first half ball block (31) is detachably mounted in the ball-shaped cavity (33) of the second half ball block (34) through the ball-shaped protrusion (29).