A multifunctional pulley device

Abstract

The present application belongs to the technical field of pulley, and particularly relates to a multifunctional pulley device, which comprises a main shell, one end of the main shell is provided with a drill adapter and a reboundable release handle, the other end of the main shell is provided with a rope wheel, the outer side of the rope wheel is provided with a movable side plate hinged with the main shell, the main shell is internally provided with a main gear connected with the rope wheel, the main gear is meshed with a secondary gear on one side, the secondary gear is connected with the drill adapter, a one-way bearing is arranged between the drill adapter and the secondary gear, a rope pressing rod is installed on the movable side plate, after the above scheme is adopted, the device can be used as a fixed pulley or a movable pulley, can be combined with multiple pulleys to form a labor-saving system, has a self-locking function, can smoothly and stably release goods by pulling the release handle, has high safety performance, can be manually operated or operated with the aid of a drill, and can be quickly used to wind the rope with the aid of a drill, has a simple structure and is convenient to use.

Description

Technical Field

[0001] This invention belongs to the field of pulley technology, and specifically relates to a multifunctional pulley device. Technical Background

[0002] A typical pulley is a circular wheel that can rotate around a central axis. The wheel has grooves on its circumference; a rope is wound around these grooves, and pulling either end of the rope causes the friction between the rope and the wheel to rotate around its central axis. A pulley is essentially a modified, rotating lever. The main functions of a pulley are to pull loads, change the direction of force, and transmit power. Pulleys can also be components of chain drives or belt drives, transferring power from one rotating shaft to another.

[0003] Pulleys are widely used in high-altitude operations and lifting heavy objects. However, in actual work, commonly used pulleys often cause workers or goods to fall due to problems with the coordination between the pulley and the rope, posing a huge risk to users. Furthermore, during the descent, pulleys cannot spontaneously control the danger, which is not conducive to user operation. At the same time, commonly used pulleys cannot be installed at any length of the rope, nor can they achieve the function of combining manual operation and electric auxiliary operation. Therefore, they need to be improved. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multifunctional pulley device.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multifunctional pulley device, comprising a main housing, one end of which is provided with an electric drill connector and a resilient release handle, and the other end of which is provided with a rope pulley. A movable side plate, hinged to the main housing, is provided on the outer side of the rope pulley. A main gear, connected to the rope pulley, is provided inside the main housing. A secondary gear meshes with one side of the main gear and is connected to the electric drill connector. A one-way bearing is provided between the electric drill connector and the secondary gear. A rope-pressing rod is installed on the movable side plate. Two friction hooks are provided on one side of the main housing, and a friction rod connected to the main housing is provided between the two friction hooks.

[0006] Furthermore, a ratchet pawl is hinged inside the main housing, and the ratchet pawl elastically abuts against one side of the main gear.

[0007] Furthermore, a rotatable release shaft is installed at the angle formed by the engagement of the pawl teeth and the main gear. The release shaft extends to the outside of the main housing and is connected to the release handle. A flat end is provided on one side of the release shaft.

[0008] Furthermore, the release handle is provided with a torsion spring, which includes a first torsion spring and a second torsion spring. The release handle includes a connecting end and a rebound end. The release shaft is connected to one end of the connecting end and is provided with the first torsion spring. The other end of the connecting end is hinged to the rebound end and is provided with the second torsion spring.

[0009] Furthermore, the movable side plate is hinged to the main shell via a first guide wheel column, and a second guide wheel column is installed on the main shell. A latch is provided on one side of the movable side plate, and the latch can be engaged with the second guide wheel column in a detachable manner.

[0010] Furthermore, the bottom end of the main shell is provided with a main lock hole, and the bottom end of the movable side plate is provided with a secondary lock hole that can overlap with the main lock hole.

[0011] Furthermore, the rope-pressing rod is rotatably mounted on the movable side plate, and the main shell is provided with a protruding point for blocking and limiting the rope-pressing rod.

[0012] Furthermore, the friction hook includes a first friction hook and a second friction hook. The first friction hook is fixedly installed at the bottom end of the main shell, and the second friction hook is fixedly installed at the top end of the main shell. The openings of the first friction hook and the second friction hook face outward.

[0013] Furthermore, the friction rod is fixedly connected to one side of the main shell.

[0014] Furthermore, the rope pulley is provided with a groove for accommodating the rope, and the left and right inner sidewalls of the groove are provided with opposing concave and convex surfaces.

[0015] The beneficial effects of this invention are as follows: By adopting the above solution, the addition of a bearing-type rope-pressing rod allows the rope to be slightly compressed by the rope-pressing rod and rope wheel after the rope is installed. Whether the rope is loaded or unloaded, the rope wheel can drive the rope to run smoothly and without obstruction. It also enables rapid rope retrieval, thereby improving work efficiency. The addition of a friction rod and two staggered friction hooks allows the rope to be wound in different ways. The friction force can be adjusted according to the weight of the lowered object, and the rope can be kept from contacting the housing during operation, extending the service life of the device. The addition of a one-way power input function enables counterclockwise power input and clockwise rotation, effectively preventing the drill from reversing and causing injury due to incorrect power input direction, thus increasing safety. The release handle automatically springs back to the locked position and can be stored on the side of the device without obstructing other operations, making it more aesthetically pleasing. It can be used as a fixed pulley or a movable pulley, and can also be combined with multiple pulleys to form a labor-saving system. It also has a self-locking function. Pulling the release handle can smoothly and steadily release the goods. It has high safety performance. It can be operated manually or with the assistance of an electric drill. It can also be used with an electric drill to quickly reel in the rope. Its structure is simple and easy to use.

[0016] Explanation of the attached diagram

[0017] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall reverse side structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the overall internal structure of the present invention;

[0020] Figure 4 A schematic diagram of the main gear, secondary gear, ratchet pawl, and release handle;

[0021] Figure 5 This is a schematic diagram of the rope wheel, rope pressing bar, and movable side plate structure of the present invention;

[0022] Figure 6 This is a schematic diagram showing the connection between the rope pulley and the rope of the present invention;

[0023] Figure 7 This is a schematic diagram of the release handle and the first torsion spring structure of the present invention;

[0024] Figure 8 This is a schematic diagram of the release handle and the second torsion spring structure of the present invention;

[0025] Figure 9 This is an enlarged structural schematic diagram of the one-way bearing component of the present invention;

[0026] Figure 10 This is an enlarged structural schematic diagram of the ratchet tooth component of the present invention;

[0027] Figure 11 This is an enlarged structural schematic diagram of the release shaft component of the present invention;

[0028] Figure 12 This is a schematic diagram of the pawl teeth, spring, and main shell structure of the present invention. Detailed Implementation

[0029] The principles and features of the present invention are described below with reference to the accompanying drawings. The embodiments described are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0030] like Figures 1 to 12As shown, this embodiment provides a multifunctional pulley device, including a main housing 1. One end of the main housing 1 is provided with an electric drill connection port 2 and a spring-loaded release handle 3. The other end of the main housing 1 is provided with a rope wheel 6. A movable side plate 4, hinged to the main housing 1, is provided on the outside of the rope wheel 6. A main gear 101 connected to the rope wheel 6 is provided inside the main housing 1. A secondary gear 103 meshes with one side of the main gear 101. The secondary gear 103 is connected to the electric drill connection port 2. A one-way bearing 201 is provided between the electric drill connection port 2 and the secondary gear 103. A rope pressing rod 5 is installed on the movable side plate 4. Two friction hooks are provided on one side of the main housing 1. A friction rod 8 connected to the main housing is provided between the two friction hooks. When the drill connector 2 rotates, power can only be input in one direction, and power input in the other direction is ineffective. Then the input shaft 104 rotates and drives the auxiliary gear 103, which drives the main gear 101 to rotate. The main gear 101 drives the rope wheel 6 to rotate. The rope wheel 6 presses the rope 601 through the rope pressing rod 5 on the movable side plate 4, providing friction, so that the rope 601 can rotate with the rope wheel 6 when the rope wheel 6 rotates.

[0031] Furthermore, a ratchet pawl 301 is hinged inside the main housing 1. The ratchet pawl 301 is pressed against the main housing by a spring 309 and meshes with the main gear 101. When the main gear 101 rotates in one direction, it can automatically disengage the ratchet pawl 301 and rotate freely. When the main gear 101 rotates in another direction, the ratchet pawl 301 meshes with it. Therefore, the main gear 101 can only rotate in one direction.

[0032] Furthermore, a rotatable release shaft 303 is installed at the angle formed by the engagement of the pawl teeth 301 and the main gear 101. The release shaft 303 extends to the outside of the main housing 1 and is connected to the release handle 3. A flat end 3031 is provided on one side of the release shaft 303. When the flat end contacts the pawl teeth 301, the pawl teeth 301 engages with the main gear 101. When the release handle 3 is rotated, the release shaft 303 will rotate. When the arc portion 3032 of the release shaft 303 contacts the pawl teeth 301, it can push the pawl teeth 301 away, thereby separating them from the main gear 101. In addition, a spring 309 is provided between the main housing and the pawl teeth. One end of the spring 309 is connected to the main housing, and the other end is connected to the round hole at the top of the pawl teeth. The elastic force of the spring 309 causes the pawl teeth to actively engage with the main gear.

[0033] Furthermore, the release handle 3 is equipped with a torsion spring, which includes a first torsion spring 1001 and a second torsion spring 1002. The release handle 3 includes a connecting end 1003 and a rebound end 1004. The release shaft 303 is connected to one end of the connecting end 1003 and is provided with the first torsion spring 1001. The other end of the connecting end 1003 is hinged to the rebound end 1004 and is provided with the second torsion spring 1002. Utilizing the characteristics of the torsion spring, the release handle 3 can rebound and fold, saving space and making it more aesthetically pleasing.

[0034] Furthermore, the movable side plate 4 is hinged to the main shell via the first guide wheel post 701. A second guide wheel post 702 is mounted on the main shell 1. A latch is provided on one side of the movable side plate 4, which can be detachably engaged with the second guide wheel post 702. Using the first guide wheel post 701 as the rotation center, the latch on one side of the movable side plate 4 is rotated to the second guide wheel post 702 and engaged with it. In addition, pulleys 703 are fitted around both the first guide wheel post 701 and the second guide wheel post 702, engaging with the movable side plate 4. The addition of pulleys 703 ensures smooth and unobstructed rope movement.

[0035] Furthermore, the bottom end of the main shell 1 is provided with a main locking hole 106, and the bottom end of the movable side plate 4 is provided with a secondary locking hole 402 that coincides with the main locking hole 106. A latch (not shown in the figure) engages the main locking hole 106 and the secondary locking hole 402 to increase security.

[0036] Furthermore, the rope-pressing rod 5 is rotatably hinged to the movable side plate 4, and the main shell 1 is provided with a protruding point 403 to block and limit the rope-pressing rod 5. The protruding point restricts the rope-pressing rod from excessive rotation.

[0037] Furthermore, the friction hook includes a first friction hook 901 and a second friction hook 902. The first friction hook 901 is fixedly installed at the bottom end of the main shell 1, and the second friction hook 902 is fixedly installed at the top end of the main shell 1. The openings of the first friction hook 901 and the second friction hook 902 face outwards. The two friction hooks allow for more ways to wrap the rope and provide greater stability.

[0038] Furthermore, the friction rod 8 is non-rotatably hinged to one side of the main shell 1, thereby preventing the rope from rubbing against the main shell.

[0039] Furthermore, the pulley 6 is provided with a groove for accommodating the rope 601, and the left and right inner sidewalls of the pulley are provided with opposing concave and convex surfaces, so that the rope is slightly wavy in the groove and can be clamped by the groove. The rope rotates as the pulley rotates.

[0040] Working principle: First, manually rotate the movable side plate 4 counterclockwise, causing the rope pressing rod 5 to rotate to the limit point 403. Then, install the rope 601 into the rope wheel 6. Utilize the opposing concave and convex surfaces to press the rope 601 together. As the rope wheel rotates, the rope moves with it. Next, rotate the movable side plate 4 clockwise. When the secondary locking hole 402 at the bottom of the movable side plate 4 coincides with the main locking hole 106 at the bottom of the main shell 1, lock the movable side plate 4 and the main shell 1 with the latch. At this time, the rope pressing rod 5 presses the rope 601, generating resistance. When the rope 601 extends out of the rope wheel 6, it becomes two sections. One section connects to the human body or object, and the other end abuts against the friction rod 8 and wraps around the first friction hook 901 and the second friction hook 902, thereby achieving a locked state.

[0041] Next, rotate the release handle 3 counterclockwise. When the release handle 3 rotates counterclockwise, it drives the release shaft 303 to rotate. The arc 3032 on the back of the release shaft 303 rotates to the side end of the pawl tooth 301 and abuts against it, thereby causing the pawl tooth 301 to release the main gear 101.

[0042] When the handle 3 is released and springs back, the flat end 3031 abuts against the pawl tooth 301, thereby causing the pawl tooth 301 to engage the main gear 101.

[0043] Finally, insert an electric drill (not shown in the figure) into the drill connector 2, turn on the electric drill (not shown in the figure), and input power. Due to the setting of the one-way bearing 201, the electric drill can only input power when it rotates forward or backward. In this embodiment, only reverse rotation is allowed. Then, the input shaft 104 drives the auxiliary gear 103 in the main housing 1. The auxiliary gear 103 meshes with the main gear 101, so when the auxiliary gear 103 rotates, it will apply power to the main gear 101, causing it to rotate. The other end of the main shaft 102 connected to the main gear 101 is connected to the rope pulley 6. When the rope pulley 6 is working, the concave and convex surfaces on both sides press the rope 601 together. The resistance applied by the rope pressure bar 5 makes the rope 601 rotate.

[0044] This product can be used to lift and lower goods and personnel. It can also be used alone as a fixed pulley, or combined with additional pulleys to form a labor-saving system with appropriate proportions. The working principle is to lift or lower goods and personnel. The usage method of the fixed pulley is provided below. Please study the usage method of the labor-saving system on your own.

[0045] When used as a fixed pulley: the auxiliary locking hole 402 at the bottom of the movable side plate 4 and the main locking hole 106 at the bottom of the main shell 1 are fastened to the hanging point. One end of the rope 601 is tied to the goods. The other end of the rope 601 is manually pulled to lift the goods. Since the pawl 301 engages with the main gear 101, it stops when you release your hand and the goods will not fall.

[0046] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multifunctional pulley device, comprising a main housing, characterized in that: One end of the main housing is provided with an electric drill connector and a... The main housing has a release handle with a rebound mechanism. A rope pulley is located at one end of the main housing. A movable side plate, hinged to the main housing, is located outside the rope pulley. A main gear connected to the rope pulley is located inside the main housing. A secondary gear meshes with one side of the main gear and connects to an electric drill connector. A one-way bearing is located between the electric drill connector and the secondary gear. A rope-pressing rod is mounted on the movable side plate. Two friction hooks are located on one side of the main housing. A friction rod connected to the main housing is located between the two friction hooks. A pawl is hinged inside the main housing and elastically abuts against one side of the main gear. A rotatable release shaft is mounted at the angle formed by the meshing of the pawl and the main gear. The release shaft extends to the outside of the main housing and connects to the release handle. A flat end is located on one side of the release shaft. A torsion spring, including a first torsion spring and a second torsion spring, is mounted on the release handle. The release handle includes a connecting end and a rebound end. The release shaft connects to the connecting... One end of the connecting end is connected to the first torsion spring, and the other end of the connecting end is hinged to the rebound end and is provided with the second torsion spring. The movable side plate is hinged to the main shell through the first guide wheel column. The main shell is equipped with the second guide wheel column. One side of the movable side plate is provided with a bayonet, which can be engaged with the second guide wheel column. The bottom end of the main shell is provided with a main locking hole. The bottom end of the movable side plate is provided with a secondary locking hole that can coincide with the main locking hole. The rope pressing rod is rotatably mounted on the movable side plate. The main shell is provided with a protruding point for blocking and limiting the rope pressing rod. The friction hook includes a first friction hook and a second friction hook. The first friction hook is fixedly mounted on the bottom end of the main shell, and the second friction hook is fixedly mounted on the top end of the main shell. The opening direction of the first friction hook and the second friction hook is outward. The friction rod is fixedly connected to one side of the main shell. The rope wheel is provided with a groove for accommodating the rope. The left and right inner sidewalls of the groove are provided with concave and convex surfaces.

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