Novel pulley

Abstract

The utility model discloses a novel pulley, which belongs to the technical field of pulleys and comprises a connecting frame, and a hook is movably mounted at the top of the connecting frame. A ball with the two ends connected to the two sides of the connecting frame respectively is installed at the bottom of the connecting frame, a rotating ring is installed on the ball, a ball groove is formed in the inner side of the middle of the rotating ring in the circumferential direction of the rotating ring, a plurality of balls are placed in the ball groove, and a lower rope groove is formed in the outer side of the middle of the rotating ring in the circumferential direction of the rotating ring. An arc-shaped sliding rail located above the ball body is installed on the connecting frame, a sliding block is arranged on the arc-shaped sliding rail, and the bottom of the sliding block is tightly attached to the top of the rotating ring. By the adoption of the novel pulley, the rotating direction of the pulley can be kept consistent with the stress direction of a rope as far as possible, friction force between the rope and the pulley can be effectively reduced, the rope can be effectively prevented from being separated from the pulley, and construction safety can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulleys, in particular to a novel pulley. Background Art

[0002] A pulley is a simple machine used to lift heavy objects and save effort. Existing pulleys generally are small wheels with grooves on the periphery and capable of rotating around an axis, consisting of a grooved disc that can rotate around a central axis and a flexible cable (rope, tape, steel cable, chain, etc.) that crosses the disc, and can rotate around the central axis for simple mechanical operations.

[0003] In the prior art, a fixed pulley generally rotates around a single axis, and only the rotation between the hook and the housing can change the direction. However, in the actual use process, the steel wire rope inevitably exerts a force on the side, resulting in an eccentric frictional force between the steel wire rope and the fixed pulley, which is not conducive to construction safety. Summary of the Invention

[0004] The purpose of the utility model is to provide a novel pulley, which can make the rotation direction of the pulley as consistent as possible with the force direction of the rope, can effectively reduce the frictional force between the rope and the pulley, and can also effectively prevent the rope from disengaging from the pulley, which is beneficial to improving construction safety.

[0005] To achieve the above purpose, the utility model provides a novel pulley, including a connecting frame, and a hook is movably installed at the top of the connecting frame; a sphere with both ends respectively connected to both sides of the connecting frame is installed at the bottom of the connecting frame, a swivel ring is installed on the sphere, a ball groove is circumferentially formed in the inner side of the middle part of the swivel ring along the circumference of the swivel ring, a number of balls are placed in the ball groove, and a lower rope groove is circumferentially formed in the outer side of the middle part of the swivel ring along the circumference of the swivel ring; an arc-shaped slide rail is installed on the connecting frame above the sphere, a slider is arranged on the arc-shaped slide rail, and the bottom of the slider is closely attached to the top of the swivel ring.

[0006] Preferably, the swivel ring includes a first swivel ring block and a second swivel ring block, and threaded holes are correspondingly formed in the first swivel ring block and the second swivel ring block and are connected and fixed by swivel ring bolts.

[0007] Preferably, the depth of the ball groove is less than the diameter of the ball.

[0008] Preferably, sealing heads are arranged on both sides of the bottom of the connecting frame, internal bearings are arranged in the sealing heads, and shaft rods corresponding to the internal bearings are arranged on both sides of the sphere.

[0009] Preferably, the shaft rod penetrates through the sphere.

[0010] Preferably, inclined bearings are installed on the outer sides of the sealing heads close to one end of the sphere.

[0011] Preferably, both ends of the arc-shaped slide rail are fixedly connected to the mounting block, and the top of the mounting block is fixedly mounted on the connecting frame by mounting block bolts.

[0012] Preferably, a upper rope groove corresponding to the lower rope groove is formed in the middle below the slider.

[0013] Preferably, the slider includes a first group block and a second group block, and the first group block and the second group block are connected and fixed by slider bolts; slide rail grooves corresponding to the arc-shaped slide rail are formed on the first group block and the second group block.

[0014] Therefore, by adopting the above-mentioned novel pulley of the present utility model, the rotation direction of the pulley can be made to be as consistent as possible with the force direction of the rope, the friction between the rope and the pulley can be effectively reduced, and the rope can be effectively prevented from disengaging from the pulley, which is beneficial to improving construction safety.

[0015] The technical solution of the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of an embodiment of a novel pulley of the present utility model;

[0017] Figure 2 is a schematic internal structure diagram of an embodiment of a novel pulley of the present utility model;

[0018] Figure 3 is a schematic cross-sectional diagram of a swivel of an embodiment of a novel pulley of the present utility model;

[0019] Figure 4 is a schematic structural diagram of a slider of an embodiment of a novel pulley of the present utility model.

[0020] Reference Signs

[0021] 1, hook; 2, connecting frame; 3, sphere; 4, swivel; 41, first swivel block; 42, second swivel block; 43, lower rope groove; 44, threaded hole; 45, ball groove; 5, head; 6, internal bearing; 7, shaft rod; 8, ball; 9, inclined bearing; 10, mounting block; 11, arc-shaped slide rail; 12, slider; 121, first group block; 122, second group block; 123, upper rope groove; 124, slide rail groove; 125, slider bolt; 13, mounting block bolt. Detailed Embodiments

[0022] The technical solution of the present utility model will be further described below with reference to the accompanying drawings and embodiments.

[0023] Unless otherwise defined, the technical terms or scientific terms used in this utility model shall have the ordinary meanings understood by those with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0024] Embodiment 1

[0025] As Figure 1 shown, this utility model provides a new type of pulley, including a connecting frame 2. A hook 1 is movably installed at the top of the connecting frame 2. The hook 1 can rotate on the top of the connecting frame 2. During the use of the pulley, the direction of the connecting frame 2 can be appropriately adjusted according to the acting force direction of the rope, which is beneficial to reducing the friction between the rope and the pulley.

[0026] Sealing heads 5 are arranged on both sides of the bottom of the connecting frame 2. In this embodiment, bolts are used to fix the sealing heads 5 on the inner side of the bottom of the connecting frame 2. Other methods can also be used to fix the sealing heads 5, which are all prior arts and will not be elaborated here. As Figure 2 shown, a sphere 3 is fixed between the two sealing heads 5. The sealing heads 5 at both ends are in close fit with the sphere 3. Inner bearings 6 are arranged in the sealing heads 5. A shaft rod 7 passing through the sphere 3 and corresponding to the inner bearings 6 is arranged in the middle of the sphere 3, which can effectively reduce the friction during the rotation of the sphere 3.

[0027] A swivel ring 4 is installed on the sphere 3. A ball groove 45 is circumferentially formed along the inner side of the middle part of the swivel ring 4. As Figure 3 shown, a lower rope groove 43 is circumferentially formed along the outer side of the middle part of the swivel ring 4 for limiting the rope. A number of balls 8 are placed in the ball groove 45. The depth of the ball groove 45 is less than the diameter of the balls 8, which can ensure that the swivel ring 4 can rotate smoothly on the sphere 3. During the use of the pulley, the position of the swivel ring 4 on the sphere 3 can be automatically adjusted according to the force direction of the rope to ensure that the rotation direction of the swivel ring 4 is as consistent as possible with the force direction of the rope, which can further reduce the friction between the rope and the pulley during the use of the pulley and is also beneficial to improving the construction safety and preventing the rope from easily falling off the pulley.

[0028] Among them, asFigure 3 As shown, the swivel 4 includes a first swivel block 41 and a second swivel block 42. The ball groove 45 and the lower rope groove 43 are respectively located on the inner and outer sides of the connection between the first swivel block 41 and the second swivel block 42. As Figure 2 shown, threaded holes 44 are correspondingly provided on the first swivel block 41 and the second swivel block 42 and are connected and fixed by swivel bolts, which facilitates the smooth installation of the swivel 4 on the sphere 3.

[0029] As Figure 2 shown, an arc-shaped slide rail 11 is installed on the connecting frame 2 above the sphere 3. Both ends of the arc-shaped slide rail 11 are fixedly connected to the mounting block 10, and the top of the mounting block 10 is fixed to the connecting frame 2 by mounting block bolts 13. A slider 12 is provided on the arc-shaped slide rail 11. The bottom of the slider 12 is in close contact with the top of the swivel 4. An upper rope groove 123 corresponding to the lower rope groove 43 is provided in the middle below the slider 12, which can effectively limit the rope and prevent the rope from falling off the pulley. The arc of the arc-shaped slide rail 11 corresponds to the arc of the sphere 3, which can ensure that the slider 12 can always be in close contact with the swivel 4 and be correspondingly arranged to limit the rope. The swivel 4 can also be limited by the slider 12 to prevent the swivel 4 from detaching from the sphere 3. Due to the presence of the slider 12, finally the swivel 4 can slide left and right stably on the sphere 3, and the angle of the swivel 4 can be automatically adjusted accordingly according to the direction of the rope force during the use of the pulley, so as to ensure that the friction between the rope and the pulley is reduced as much as possible.

[0030] Among them, as Figure 4 shown, the slider 12 includes a first set of blocks 121 and a second set of blocks 122. Slide rail grooves corresponding to the arc-shaped slide rail 11 are provided on the first set of blocks 121 and the second set of blocks 122. The first set of blocks 121 and the second set of blocks 122 are connected and fixed by slider bolts 125, and this design facilitates the installation of the slider 12 on the arc-shaped slide rail 11.

[0031] In addition, inclined bearings 9 are installed on the outer sides of the head 5 near one end of the sphere 3. When the inclination angle of the swivel 4 is relatively large, the swivel 4 can be limited, and friction between the swivel 4 and the head 5 can also be avoided, which is beneficial to the smooth rotation of the swivel 4.

[0032] Therefore, the above-mentioned new type of pulley adopted by the present utility model can make the rotation direction of the pulley as consistent as possible with the force direction of the rope, can effectively reduce the friction between the rope and the pulley, and can also effectively prevent the rope from detaching from the pulley, which is beneficial to improving construction safety.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions of the present invention or make equivalent replacements, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A new type of pulley, characterized in that: It includes a connecting frame, a hook is movably installed on the top of the connecting frame; a sphere is installed at the bottom of the connecting frame, and its two ends are respectively connected to the two sides of the connecting frame, a swivel is installed on the sphere, a ball groove is opened on the inner side of the middle part of the swivel along the circumference of the swivel, a plurality of balls are placed in the ball groove, and a lower rope groove is opened on the outer side of the middle part of the swivel along the circumference of the swivel; an arc-shaped slide rail located above the sphere is installed on the connecting frame, a slider is arranged on the arc-shaped slide rail, and the bottom of the slider is tightly fitted with the top of the swivel.

2. A new type of pulley according to claim 1, characterized in that: The swivel includes a first swivel block and a second swivel block. The first swivel block and the second swivel block are correspondingly provided with threaded holes and are connected and fixed by swivel bolts.

3. A new type of pulley according to claim 1, characterized in that: The depth of the ball groove is smaller than the diameter of the ball.

4. A novel pulley according to claim 1, characterized in that: Both sides of the bottom of the connecting frame are provided with heads, and internal bearings are provided in the heads. Both sides of the sphere are provided with shaft rods corresponding to the internal bearings.

5. A new type of pulley according to claim 4, characterized in that: The shaft passes through the sphere.

6. A novel pulley according to claim 4, characterized in that: An oblique bearing is installed on the outer side of the sealing head close to one end of the sphere.

7. A novel pulley according to claim 1, characterized in that: Both ends of the arc-shaped slide rail are fixedly connected to the mounting block, and the top of the mounting block is fixed to the connecting frame by mounting block bolts.

8. A novel pulley according to claim 1, characterized in that: An upper rope groove corresponding to the lower rope groove is provided in the middle portion below the sliding block.

9. A novel pulley according to claim 1, characterized in that: The slider comprises a first block and a second block, wherein the first block and the second block are connected and fixed by slider bolts; the first block and the second block are provided with slide rail grooves corresponding to the arc-shaped slide rail.

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