Crane drum capable of preventing rope from falling off

Abstract

A rope-falling-preventing crane roller comprises supporting seats, a roller body is arranged between the two supporting seats, the two ends of the roller body are assembled at the upper ends of the supporting seats through supporting rods, a rope-falling-preventing mechanism is arranged above the roller body, the rope-falling-preventing mechanism comprises a second supporting shaft parallel to the roller body, and a guide groove is formed in the second supporting shaft; sliding blocks are slidably assembled in the two ends of the second supporting shaft, first supporting shafts are rotatably assembled on the two sliding blocks through bearings, one ends of the first supporting shafts extend out of the second supporting shaft, and the first supporting shafts are sleeved with a plurality of annular first supporting blocks; the second supporting shaft is sleeved with a plurality of annular second supporting blocks, and the first supporting blocks and the second supporting blocks are the same in outer diameter. A lifting mechanism is arranged between the first supporting shaft and the supporting seat, and the first supporting shaft is assembled on the supporting seat through the lifting mechanism. The device is simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of cranes, and particularly relates to a crane drum for preventing rope from slipping off. Background Art

[0002] A crane refers to a multi-action lifting machine that vertically lifts and horizontally transports heavy objects within a certain range. It is also called an overhead crane, a bridge crane, or a hoist. The wire rope winding device is an essential equipment on a crane. Although a rope groove is provided on the drum of the wire rope winding device, the wire ropes may still be arranged unevenly during the winding process. The disorderly arranged wire ropes will cause uneven stress, increase the friction between the wire ropes, and shorten the service life of the wire ropes. Moreover, due to the inertial effect of the hook, the wire ropes may break away from the rope grooves on the drum because the pulling force decreases, which not only affects the work efficiency but may also cause accidents and property losses in serious cases. Therefore, in the prior art, the wire ropes of the crane drum are prone to slipping off the rope grooves, which is inconvenient to use. Content of the Utility Model

[0003] In order to solve the technical problem that the existing wire rope is easily separated from the rope groove, the utility model provides a crane drum with an anti-rope-slipping structure, comprising two symmetrical and spaced support seats, the support seats play a supporting and fixing role, the two support seats can be detachably fixed on the trolley frame of the crane, and a horizontally arranged drum is provided between the two support seats, both ends of the drum are rotatably assembled on the upper ends of the support seats through support rods, one of the support rods extends out of the support seat, and a lifting motor is fixed on the trolley frame of the crane, and a power output shaft of the lifting motor is transmission-connected to the support rods. An anti-rope-slipping mechanism is provided above the drum to prevent the wire rope on the drum from slipping out of the groove. The anti-rope-slipping mechanism includes a second support shaft arranged parallel to the drum, the second support shaft is tubular and a guide groove is opened in the second support shaft, both ends of the second support shaft are slidably equipped with sliders, the two sliders are rotatably equipped with the first support shaft through bearings, and the second support shaft extends from one end of the first support shaft, a plurality of first support blocks in the shape of an annular ring are sleeved on the first support shaft, and a plurality of second support blocks in the shape of an annular ring are sleeved on the second support shaft, the outer diameters of the first support block and the second support block are the same, and the position of the first support shaft on the second support shaft can be adjusted according to the length of the drum, thereby adjusting the distance between the two ends of the first support shaft, and by adding the first support block to the first support shaft, it can be suitable for crane drums of different specifications, which is convenient to use. The lifting mechanism is a kind of inertia of the lifting mechanism, and its first end is connected with the first gear and the second end is connected with the gear train of the lifting mechanism, and its first gear is connected with the gear train by the spring, and its second end is connected with the gear train of the lifting mechanism.

[0004] Preferably, a rope groove for winding the wire rope is provided on the drum.

[0005] Preferably, fixing plates are fixed inside both ends of the reel, and the support rod extends into the reel and is fixedly connected to the fixing plates.

[0006] The above solution has the following advantages:

[0007] With the lifting mechanism provided, when the lead screw is rotated clockwise, the lead screw pulls the support platform to move vertically upward, increasing the distance between the first support block, the second support block and the drum. When the lead screw is rotated counterclockwise, the lead screw pushes the support platform to move vertically downward, decreasing the distance between the first support block, the second support block and the drum. The settings of the first support shaft and the second support shaft can adjust the position of the first support shaft on the second support shaft according to the length of the drum, thereby adjusting the distance between the ends of the two first support shafts. By adding the first support block to the first support shaft, it can be applied to crane drums of different specifications, facilitating use. Brief Description of the Drawings

[0008] Figure 1 is a schematic structural diagram of the present utility model;

[0009] Figure 2 is a schematic structural diagram of the anti - rope - off mechanism;

[0010] Figure 3 is Figure 2 an enlarged view of part A of

[0011] Figure 4 is an enlarged view of part B of 2.

[0012] Reference Numerals: 1, support base; 2, anti - rope - off mechanism; 3, lifting mechanism; 11, drum; 12, support rod; 13, fixing plate; 14, steel wire rope; 21, second support shaft; 22, first support shaft; 23, guide groove; 24, slider; 25, first support block; 26, second support block; 27, support platform; 31, column; 32, support plate; 33, lead screw; 34, hand wheel. Detailed Description of the Embodiment

[0013] As Figures 1-4As shown in the figure, an anti - rope - off crane drum includes two symmetrically and spaced support seats 1. The support seats 1 play a role in supporting and fixing. Both support seats 1 can be detachably fixed on the trolley frame of the crane. A horizontally arranged drum 11 is provided between the two support seats 1. Both ends of the drum 11 are rotatably assembled at the upper ends of the support seats 1 through support rods 12. One of the support rods 12 extends out of the support seat 1, and a hoisting motor is fixed on the trolley frame of the crane. The power output shaft of the hoisting motor is in transmission connection with the support rod 12. An anti - rope - off mechanism 2 for preventing the wire rope 14 on the drum 11 from slipping out of the groove is provided above the drum 11. The anti - rope - off mechanism 2 includes a second support shaft 21 arranged parallel to the drum 11. The second support shaft 21 is tubular and a guide groove 23 is opened inside the second support shaft 21. Sliders 24 are slidably assembled inside both ends of the second support shaft 21. A first support shaft 22 is rotatably assembled on both sliders 24 through bearings. One end of the first support shaft 22 extends out of the second support shaft 21. A number of annular first support blocks 25 are sleeved on the first support shaft 22. A number of annular second support blocks 26 are sleeved on the second support shaft 21. The outer diameters of the first support blocks 25 and the second support blocks 26 are the same. The position of the first support shaft 22 in the second support shaft 21 can be adjusted according to the length of the drum 11, thereby adjusting the distance between the ends of the two first support shafts 22. By adding the number of the first support blocks 25 to the first support shaft 22, it can be applicable to the drums 11 of cranes with different specifications (lengths), which is convenient for use. A lifting mechanism 3 is provided between the first support shaft 22 and the support seat. The first support shaft 22 is assembled on the support seat 1 through the lifting mechanism 3. The lifting mechanism 3 includes two vertically arranged columns 31. The bottom ends of the columns 31 are fixed at the top of the support seat 1. Horizontally arranged support plates 32 are detachably fixed at the upper ends of both columns 31. Vertically arranged lead screws 33 are threadedly connected to both support plates 32. The lower ends of the lead screws 33 extend downward out of the support plates 32. A support table 27 is provided between the lead screws 33 and the first support shaft 22. The lower ends of the lead screws 33 are rotatably assembled at the top of the support table 27 through bearings. The first support shaft 22 is rotatably assembled on the support table 27 through bearings. The upper ends of the lead screws 27 extend upward out of the support plates 32. A handwheel 34 for facilitating the rotation of the lead screw 27 is fixed at the top ends of the lead screws 27. When the lead screws 33 are rotated clockwise respectively, the lead screws 33 pull the support table 27 to move vertically upward, increasing the distance between the first support blocks 25, the second support blocks 26 and the drum 11. When the lead screws 33 are rotated counterclockwise, the lead screws 33 push the support table 27 to move vertically downward, reducing the distance between the first support blocks 25, the second support blocks 26 and the drum 11.

[0014] Preferably, a rope groove for winding the wire rope is provided on the drum 11.

[0015] Preferably, fixing plates 13 are fixedly arranged inside both ends of the winding drum 11, and the support rod 12 extends into the winding drum 11 and is fixedly connected to the fixing plate 13.

[0016] Usage process:

[0017] When the present utility model is in use, first, the total lengths of the first support rod shaft 22 and the second support shaft 21 are adjusted according to the length of the winding drum 11. Then, an appropriate number of second support blocks 26 are sequentially assembled onto the second support shaft 21, and the first support blocks 25 are respectively assembled onto the first support shaft, such that the first support blocks 25 are closely arranged on the first support shaft 22, and the second support blocks 26 are closely arranged on the second support shaft 26. Then, the lead screw 33 is rotated counterclockwise by the hand wheel 34, and the lead screw 33 pushes the support table 27 to move vertically downward, reducing the distances between the first support block 25, the second support block 26, and the winding drum 11, so that the first support block 25 and the second support block 26 contact and press the steel wire rope 14 on the winding drum 11. During the process of the steel wire rope being released or wound around the winding drum 11, the first support block 25 and the second support block 26 rotate to avoid jamming the steel wire rope.

[0018] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0019] The above embodiments are illustrative of the present utility model, rather than limiting the present utility model. Any solution obtained by simply transforming the present utility model falls within the protection scope of the present utility model.

Claims

1. A crane drum that prevents rope from falling off, comprising two symmetrically and spaced support seats, both of which are detachably fixed on the trolley frame of the crane, and a horizontally arranged drum is provided between the two support seats. Both ends of the drum are rotatably assembled at the upper ends of the support seats through support rods, and it is characterized in that: Above the reel, there is an anti - rope - off mechanism for preventing the wire rope on the reel from coming out of the groove. The anti - rope - off mechanism includes a second support shaft arranged parallel to the reel. A guide groove is formed inside the second support shaft. Sliders are slidably assembled inside both ends of the second support shaft. On both sliders, a first support shaft is rotatably assembled through bearings, and one end of the first support shaft extends out of the second support shaft. A number of annular first support blocks are sleeved on the first support shaft, and a number of annular second support blocks are sleeved on the second support shaft. The outer diameters of the first support blocks and the second support blocks are the same. There is a lifting mechanism between the first support shaft and the support seat, and the first support shaft is assembled on the support seat through the lifting mechanism.

2. The anti-detachment rope crane drum according to claim 1, characterized in that: The lifting mechanism includes two vertically arranged columns. The bottom ends of the columns are fixed to the top end of the support seat. Horizontally arranged support plates are detachably fixed to the upper ends of the two columns. Vertically arranged lead screws are threadedly connected to both support plates. The lower end of the lead screw extends downward out of the support plate, and a support platform is arranged between the lead screw and the first support shaft. The lower end of the lead screw is rotatably assembled through a bearing at the top end of the support platform, and the first support shaft is rotatably assembled through a bearing on the support platform.

3. The anti-detachment rope crane drum according to claim 2, wherein: The upper end of the lead screw extends upward out of the support plate, and a handwheel for facilitating the rotation of the lead screw is fixed to the top end of the lead screw.

4. The anti-rope-off crane drum according to claim 1, characterized in that: The reel is provided with a rope groove for winding the wire rope.

5. A crane drum with an anti-detachment rope, according to any one of claims 1-4, characterized in that: Fixing plates are fixed inside both ends of the reel, and the support rod extends into the reel and is fixedly connected to the fixing plate.

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