High-precision rope-clamping-free mute pulley

Abstract

The utility model relates to the technical field of silent pulleys, in particular to a high-precision rope-clamping-free silent pulley which comprises a supporting frame, a rotating groove is formed in one side of the supporting frame, a roller body is rotationally connected into the rotating groove, and a connecting sleeve is fixedly connected to the side, close to the rotating groove, of the roller body. One of the attaching blocks is controlled by the pushing block to compress and push the spring, so that the attaching blocks compress and push the spring to be separated from the outside of the ratchet wheel, the roller body can rotate in one direction in the rotating groove at the moment, a rope can be pulled up in the rotating direction, and the roller body cannot rotate in the releasing process; therefore, the friction force is increased, the released force is reduced, the problems that a gap exists between the roller main body and the supporting frame and the roller main body and the supporting frame are prone to being clamped, and the force needed in the releasing process is larger due to an original bearing rotating mode are solved, the running stability of the roller main body is improved, and the force needed in the releasing process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of silent pulleys, in particular to a high-precision rope-free silent pulley. Background Art

[0002] Silent pulley, also known as silent hoist, is a machine component that combines a rope or other flexible material with a pulley. This kind of pulley has many uses, but it is generally used for lifting work, while silent pulleys are generally used more in stage performances.

[0003] In order to avoid friction between the roller and the two sides of the fixed frame, the existing silent pulley needs to have a certain gap to avoid friction between the roller and the two sides of the fixed frame. However, when in use, when lifting performance props or performers, the lifting rope is easily embedded in the gap between the roller and the fixed frame, causing the roller to get stuck, resulting in the rope being unable to move. When the rope needs to be slowly extended along the surface of the roller, the sliding structure of the roller causes the problem of greater force required for release.

[0004] Therefore, a high-precision rope-free silent pulley is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a high-precision rope-free silent pulley to solve the problem raised in the above-mentioned background technology that when using the lifting props or performers, the lifting rope is easily embedded in the gap between the roller and the fixed frame, causing the roller to be stuck and the rope to be unable to move. When the rope needs to be slowly lengthened along the roller surface, the sliding structure of the roller causes a greater force to be required for release.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: it includes a support frame, a rotation groove is provided on one side of the support frame, a roller body is provided on the opposite side of the support frame, the outside of the roller body is rotatably connected to the inside of the rotation groove near the two ends, a connecting sleeve is fixedly connected to the side of the roller body near the rotation groove, a ratchet gear is fixedly connected to the end of the connecting sleeve away from the roller body, a control shell is rotatably connected to the outside of the connecting sleeve, the control shell is fixedly connected to the inside of the support frame, and a chimeric component is provided on one side of the ratchet gear, and the chimeric component is used to control the rotation direction of the roller body.

[0007] Preferably, the chimeric component comprises fitting blocks, and the fitting blocks are symmetrically arranged in two groups. A push spring is fixedly connected to one side of the fitting block away from the opposite side, and one end of the push spring away from the fitting block is fixedly connected to the inside of the control shell.

[0008] Preferably, a push block is provided on the opposite side of the control shell, the push block is wide at the top and narrow at the bottom, the fitting block is rotatably connected to the inside of the control shell away from the ratchet gear, and the push spring is conically arranged.

[0009] Preferably, the pushing block is fixedly connected to a rotating block on one side away from the ratchet gear, and a positioning assembly is provided on one side of the supporting frame close to the rotating block, and the positioning assembly is used to limit the position of the rotating block.

[0010] Preferably, the positioning assembly comprises a limit spring, the limit spring is fixedly connected inside the support frame, and one end of the limit spring away from the support frame is fixedly connected to a limit block.

[0011] Preferably, there are two groups of the limit blocks and limit springs which are symmetrically arranged, and the limit blocks are arranged in an oblique shape on the side close to the rotating block.

[0012] Preferably, the roller body and the support frame are symmetrically arranged in two groups, the roller body is rotatably connected to a clamping plate on one opposite side, the support frame and the clamping plate are rotatably connected to a rotating shaft inside, and the support frame and the clamping plate are rotatably connected to a connecting shaft on a side away from the rotating shaft.

[0013] Preferably, a connecting frame is rotatably connected to the outside of the connecting shaft at a side opposite to the supporting frame, and a collar is rotatably connected to the inside of the connecting frame.

[0014] Beneficial effects of the utility model:

[0015] 1. The utility model controls one of the fitting blocks to compress the push spring through the pushing block, so that the fitting block compresses the push spring and thus detaches from the outside of the ratchet gear. At this time, the roller body can choose a direction to rotate inside the rotating groove, so that the rope can be pulled up along the rotating direction. When released, the roller body will not rotate, thereby increasing the friction force and reducing the release force. This solves the problem that the gap between the roller body and the support frame is easy to get stuck, and the previous bearing rotation method results in a greater force required for release. This improves the stability of the roller body operation and reduces the force required for release.

[0016] 2. The utility model realizes pushing the fitting block on only one side through the structure of the pushing block, and the limiting spring pushes the limiting block to engage on one side of the rotating block, which can limit the rotation position of the rotating block, solves the problem of only using a single rotating structure, resulting in the inability to limit the fitting block on one side, and improves the control effect when fixing the ratchet gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a high-precision rope-free silent pulley according to an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the support frame of the high-precision rope-free silent pulley according to an embodiment of the utility model;

[0020] Figure 3 The utility model embodiment of the high-precision non-caged rope silent pulley Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the control shell of the high-precision rope-free silent pulley according to an embodiment of the utility model;

[0022] Figure 5 The utility model embodiment of the high-precision non-caged rope silent pulley Figure 4 The enlarged structural diagram at B in the middle;

[0023] Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of a high-precision rope-free silent pulley according to an embodiment of the utility model;

[0024] Figure 7 The utility model embodiment of the high-precision non-caged rope silent pulley Figure 6 Enlarged structural diagram at point C in the middle.

[0025] The markings in the figure are: 1. Roller body; 2. Support frame; 3. Rotating groove; 4. Ratchet gear; 5. Fitting block; 6. Pushing block; 7. Pushing spring; 8. Rotating block; 9. Limiting spring; 10. Limiting block; 11. Connecting sleeve; 12. Control shell; 13. Rotating shaft; 14. Connecting shaft; 15. Clamp; 16. Connecting frame; 17. Ring. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0027] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] like Figures 1 to 7 As shown, a specific embodiment of the utility model provides a high-precision rope-free silent pulley, including a support frame 2, a rotation groove 3 is opened on one side of the support frame 2, a roller body 1 is arranged on the opposite side of the support frame 2, the outer side of the roller body 1 is rotatably connected to the inside of the rotation groove 3 near the two ends, a connecting sleeve 11 is fixedly connected to the side of the roller body 1 near the rotation groove 3, the connecting sleeve 11 is fixedly connected to a ratchet gear 4 at one end away from the roller body 1, the outer side of the connecting sleeve 11 is rotatably connected to a control shell 12, the control shell 12 is fixedly connected to the inside of the support frame 2, a chimeric component is arranged on one side of the ratchet gear 4, the chimeric component is used to control the rotation direction of the roller body 1, the chimeric component includes a fitting block 5, there are two groups of the fitting blocks 5 symmetrically arranged, the fitting block 5 is fixedly connected to a push spring 7 away from the opposite side, and the push spring 7 is fixedly connected to the inside of the control shell 12 at one end away from the fitting block 5.

[0029] By adopting the above technical scheme, the utility model realizes the sound-absorbing effect by the roller body 1 being embedded in the rotating groove 3 provided in the support frame 2 and rotating. Moreover, when the rope rotates outside the roller body 1, even if the rope shakes, it will not be stuck between the roller body 1 and the support frame 2, thereby ensuring the smooth movement of the rope on the surface of the roller body 1. When the roller body 1 rotates, it will also drive the connecting sleeve 11 and the ratchet gear 4 to rotate at the same time. When it is necessary to control the direction of the roller body 1, one of the pushing springs 7 can be selected to push the fitting block 5 to be embedded outside the ratchet gear 4, thereby realizing a restriction on the rotation of the ratchet gear 4, making it easier to rotate in one direction when pulling up, and the roller body 1 will not rotate when releasing, thereby ensuring that there is friction between the roller body 1 and the rope, thereby reducing the force required for release.

[0030] Specifically, Figure 3 and Figure 5As shown, a pushing block 6 is provided on the opposite side of the control shell 12, and the pushing block 6 is wide at the top and narrow at the bottom. The fitting block 5 is rotatably connected to the inside of the control shell 12 away from the ratchet gear 4, and the pushing spring 7 is conically arranged. The pushing block 6 is fixedly connected to the side away from the ratchet gear 4 with a rotating block 8, and a positioning assembly is provided on one side of the support frame 2 near the rotating block 8. The positioning assembly is used to limit the position of the rotating block 8, and the positioning assembly includes a limit spring 9, which is fixedly connected to the inside of the support frame 2, and the limit spring 9 is fixedly connected to the limit block 10 at one end away from the support frame 2.

[0031] By adopting the above technical solution, the structure of the pushing block 6 that is wide at the top and narrow at the bottom ensures that the pushing block 6 will be driven to rotate when the rotating block 8 is rotated, and the wider side of the pushing block 6 will fit and squeeze one side of the bonding block 5, and the bonding block 5 will squeeze the pushing spring 7 to contract when it is away from the surface of the ratchet gear 4, and the rotating block 8 will push the limiting block 10 through the limiting spring 9 when rotating, so that the limiting block 10 is engaged with one side of the rotating block 8, thereby limiting the rotation position of the rotating block 8. In this way, it is ensured that when determining the position of the rotating block 8, the rotating block 8 will not be reset due to the push of the pushing spring 7, and the bonding block 5 will not be given enough squeezing force.

[0032] Specifically, Figure 2 and Figure 3 As shown, there are two groups of limit blocks 10 and limit springs 9 which are symmetrically arranged, the limit block 10 is beveled on the side close to the rotating block 8, the roller body 1 and the support frame 2 are symmetrically arranged in two groups, the roller body 1 is rotatably connected to the opposite side with a splint 15, the support frame 2 and the splint 15 are internally rotatably connected with a rotating shaft 13, the support frame 2 and the splint 15 are internally rotatably connected with a connecting shaft 14 on the side away from the rotating shaft 13, the connecting shaft 14 is rotatably connected to a connecting frame 16 on the outside of the connecting shaft 14 close to the side opposite to the support frame 2, and the connecting frame 16 is internally rotatably connected with a ring 17.

[0033] By adopting the above technical scheme, the structure of the limit block 10 is used to ensure that the rotating block 8 can slide along the beveled surface of the limit block 10 when it rotates, and when the rotating block 8 leaves the limit block 10, it will be pushed out by the limit spring 9, so that the limit block 10 can limit the rotating block 8. The two groups of structures of the roller body 1 can ensure that the roller body 1 can rotate smoothly inside the rotating groove 3, and the structure of the splint 15 can distinguish the two groups of roller bodies 1. The rotating shaft 13 enables the roller body 1 to rotate on the surface of the rotating shaft 13, the connecting shaft 14 cooperates with the rotating shaft 13 to fix the support frame 2 and the splint 15, and the connecting frame 16 cooperates with the ring 17 to rotate outside the connecting shaft 14 to fix the entire device, thereby improving the stability of the fixation.

[0034] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0035] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A high-precision rope-free silent pulley, comprising a support frame (2), characterized in that: A rotation groove (3) is provided on one side of the support frame (2), and a roller body (1) is provided on the opposite side of the support frame (2); the outside of the roller body (1) is rotatably connected to the inside of the rotation groove (3) near the two ends; a connecting sleeve (11) is fixedly connected to the side of the roller body (1) near the rotation groove (3); the end of the connecting sleeve (11) away from the roller body (1) is fixedly connected to a ratchet gear (4); the outside of the connecting sleeve (11) is rotatably connected to a control shell (12); the control shell (12) is fixedly connected to the inside of the support frame (2); and a chimeric component is provided on one side of the ratchet gear (4); the chimeric component is used to control the rotation direction of the roller body (1).

2. The high-precision rope-free silent pulley according to claim 1 is characterized in that: The interlocking assembly comprises a fitting block (5), wherein two groups of the fitting blocks (5) are symmetrically arranged, and a push spring (7) is fixedly connected to one side of the fitting block (5) away from the opposite side, and one end of the push spring (7) away from the fitting block (5) is fixedly connected to the inside of the control shell (12).

3. The high-precision rope-free silent pulley according to claim 2 is characterized in that: A push block (6) is arranged on the opposite side of the control shell (12), and the push block (6) is arranged to be wide at the top and narrow at the bottom. The fitting block (5) is rotatably connected to the inside of the control shell (12) away from the position of the ratchet gear (4), and the push spring (7) is arranged to be conical.

4. The high-precision rope-free silent pulley according to claim 3 is characterized in that: A rotating block (8) is fixedly connected to the side of the pushing block (6) away from the ratchet gear (4), and a positioning assembly is provided on one side of the support frame (2) near the rotating block (8), wherein the positioning assembly is used to limit the position of the rotating block (8).

5. The high-precision rope-free silent pulley according to claim 4 is characterized in that: The positioning assembly comprises a limit spring (9), the limit spring (9) is fixedly connected inside the support frame (2), and one end of the limit spring (9) away from the support frame (2) is fixedly connected to a limit block (10).

6. The high-precision rope-free silent pulley according to claim 5 is characterized in that: The limit blocks (10) and limit springs (9) are provided in two groups in a symmetrical manner, and the limit blocks (10) are provided in an oblique manner on the side close to the rotating block (8).

7. The high-precision rope-free silent pulley according to claim 6 is characterized in that: The roller body (1) and the support frame (2) are arranged in two groups in a symmetrical manner. The roller body (1) is rotatably connected to a clamping plate (15) on one opposite side. The support frame (2) and the clamping plate (15) are rotatably connected to a rotating shaft (13). The support frame (2) and the clamping plate (15) are rotatably connected to a connecting shaft (14) on a side away from the rotating shaft (13).

8. The high-precision rope-free silent pulley according to claim 7 is characterized in that: A connecting frame (16) is rotatably connected to the outside of the connecting shaft (14) and the side opposite to the supporting frame (2), and a sleeve ring (17) is rotatably connected to the inside of the connecting frame (16).

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