Self-balancing pulley block

Abstract

The utility model discloses a self-balancing pulley block which is characterized in that the self-balancing pulley block comprises a pulley bearing main body and a pulley assembly, the side part of the pulley bearing main body is provided with a pulley groove and a bearing shaft, the pulley assembly is movably arranged in the pulley groove, and the pulley assembly is rotatably connected with the pulley bearing main body through the bearing shaft; a plurality of positioning wheels are arranged on the outer side of the pulley bearing body and used for making contact with the inner side wall of the guide rail groove, the pulley bearing body is guided to move along the guide rail groove, and the jamming phenomenon is avoided. Automatic height balance adjustment is achieved, and sliding is smooth under the condition that a guide rail is uneven; the positioning wheels can guide movement, blocking is avoided, the whole device is stable and reliable, assembling and disassembling are convenient, and running is smooth.

Description

Technical Field

[0001] This utility model relates to the field of pulley technology, and more specifically to a self-balancing pulley system. Background Technology

[0002] During long-term use, pulley tracks are prone to deformation due to external forces (such as impacts), temperature changes (thermal expansion and contraction causing deformation of the track material), and material aging (decreased track stiffness after long-term use), making it impossible for the track to maintain a consistently level state. In this situation, when the pulley slides in the track, uneven wheel height and unstable sliding often occur, not only affecting normal use and generating significant noise and vibration, but also potentially shortening the pulley's lifespan and increasing maintenance costs due to uneven stress. Existing technologies generally employ pulleys with self-balancing functions to adjust the relative height of the wheels during sliding, ensuring smooth sliding of the pulley and the connected sliding door. For example, Chinese Patent Publication No. CN211573068U discloses a self-balancing pulley, comprising: a main body with a transverse through hole in the middle; a transverse nut housed in the transverse through hole; two fixing plates hinged to opposite sides of the main body via the ends of the transverse nut; and wheels mounted on the fixing plates, located on either side of the hinge point between the fixing plates and the transverse nut. This self-balancing pulley offers better load-bearing capacity in the track, quieter sliding, and easier installation. However, it also presents some drawbacks in practical use. During installation, the track may experience bending deformation due to installation errors, foundation settlement, or other factors. In such cases, simply adjusting the pulley's height automatically cannot completely solve the sliding problem, and the pulley may still jam, affecting the normal operation of the equipment. Therefore, it is necessary to further improve the existing self-balancing pulley structure. Summary of the Invention

[0003] The purpose of this invention is to provide a stable, reliable, easy-to-assemble and disassemble, and smooth-running self-balancing pulley system to overcome the shortcomings of existing technologies.

[0004] This utility model achieves the above-mentioned objectives using the following technical solution: a self-balancing pulley system, characterized in that it includes a pulley support body and a pulley assembly; a pulley groove and a support shaft are provided on the side of the pulley support body; the pulley assembly is movably disposed within the pulley groove; the pulley assembly is rotatably connected to the pulley support body via the support shaft; multiple positioning wheels are provided on the outer side of the pulley support body for contacting the inner wall of the guide rail groove, guiding the pulley support body to move along the guide rail groove, and avoiding jamming.

[0005] As a further explanation of the above scheme, pulley grooves and corresponding pulley assemblies are provided on both the left and right sides of the pulley load-bearing body; this double-row pulley assembly greatly improves the overall load-bearing capacity of the pulley, can better support the weight of the connecting parts, and also increases the stability of connecting parts such as door panels during the sliding process, reducing swaying.

[0006] Furthermore, the pulley assembly includes a pulley housing and at least two pulley components mounted within the pulley housing via shafts. A shaft hole for accommodating a load-bearing shaft is provided in the middle of the pulley housing. The pulley housing encloses the pulley components, minimizing their contact with the outside environment and effectively preventing external sand and dust particles from entering the pulley components, thereby greatly improving their service life.

[0007] Furthermore, the end of the pulley groove is provided with an arc-shaped recess corresponding to the pulley component. This can prevent the pulley component from contacting the end of the pulley groove during the rotation of the pulley assembly, reduce unnecessary friction and collision, and ensure the smooth rotation of the pulley assembly.

[0008] Furthermore, positioning wheel mounting grooves are provided on the left front and left rear sides, and right front and right front sides of the pulley load-bearing body. The positioning wheels are horizontally installed in the positioning wheel mounting grooves, which can play a good guiding role.

[0009] Furthermore, the top of the pulley load-bearing body is provided with a groove, and there are two or more holes in the groove, in which spring pins are installed. The function of the spring pin is to provide positioning and buffering when the pulley assembly is connected to other components (such as the door leaf). When the pulley assembly drives the door leaf to slide, the spring pin can buffer the vibration of the door leaf, making the door leaf run more smoothly, while also ensuring the firmness of the connection and facilitating assembly and disassembly.

[0010] Furthermore, the main load-bearing body of the pulley is an integrated aluminum alloy metal block. Aluminum alloy has advantages such as light weight, high strength, and corrosion resistance. Using an integrated aluminum alloy metal block as the main load-bearing body of the pulley not only ensures its high load-bearing capacity, but also reduces the overall weight of the pulley assembly, making it easier to install and use. At the same time, the corrosion resistance of aluminum alloy also helps to improve the service life of the pulley assembly.

[0011] The beneficial effects that this utility model can achieve by adopting the above-mentioned technical solution are:

[0012] 1. This utility model adopts a self-balancing pulley block structure mainly composed of a pulley load-bearing body and a pulley assembly. A pulley groove and a load-bearing shaft are provided on the side of the pulley load-bearing body. The pulley assembly is movably installed in the pulley groove. The pulley assembly is rotatably connected to the pulley load-bearing body through the load-bearing shaft to realize automatic height balance adjustment. Even when the guide rail is uneven, it is relatively smooth to push. Multiple positioning wheels are provided on the outer side of the pulley load-bearing body to contact the inner side wall of the guide rail groove, guide the pulley load-bearing body to move along the guide rail groove, and avoid jamming.

[0013] 2. The pulley load-bearing body of this utility model is equipped with a double-row pulley assembly, which greatly improves the overall load-bearing capacity of the pulley and also increases the stability of the door leaf.

[0014] 3. The pulley housing of this utility model encloses the pulley components, minimizing their contact with the outside environment and effectively preventing external sand and dust particles from entering the pulley components, thereby greatly improving the service life of the pulley. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the pulley block installation structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of this utility model.

[0017] Figure 3 This is an exploded structural diagram of the present invention.

[0018] Figure 4 This is a schematic diagram of the main structure of the pulley load-bearing system.

[0019] Figure 5 This is a schematic diagram of the pulley assembly structure.

[0020] Figure 6 This is a schematic diagram of the self-balancing structure of the pulley assembly.

[0021] Explanation of reference numerals in the attached drawings: 1. Pulley load-bearing body; 1-1. Pulley groove; 1-2. Arc-shaped recess; 1-3. Positioning wheel mounting groove; 1-4. Groove; 1-5. Hole; 2. Pulley assembly; 2-1. Pulley housing; 2-2. Pulley component; 2-3. Shaft hole; 3. Load-bearing shaft; 4. Positioning wheel; 5. Guide rail groove; 6. Shaft; 7. Spring pin; 8. Guide rail; 9. Positioning wheel shaft. Detailed Implementation

[0022] In the description of this utility model, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature, and in this description of the utility model, "at least" means one or more, unless otherwise explicitly specified.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] In this utility model, unless otherwise specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Above," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings, making the technical solution and beneficial effects of this utility model clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0027] This utility model is a self-balancing pulley system, such as Figure 1As shown, it is installed in the guide rail groove 5, and the bottom of the guide rail groove 5 is provided with a guide rail 8, while the side walls of the guide rail groove 5 are higher than the self-balancing pulley group. Figures 2-6 As shown, the self-balancing pulley system structurally includes a pulley load-bearing body 1 and pulley assemblies 2. A pulley groove 1-1 and a load-bearing shaft 3 are provided on the side of the pulley load-bearing body 1. The pulley assembly 2 is movably disposed within the pulley groove 1-1 and is rotatably connected to the pulley load-bearing body 1 via the load-bearing shaft 3. Specifically, pulley grooves 1-1 and corresponding pulley assemblies 2 are provided on both the left and right sides of the pulley load-bearing body 1. This double-row pulley assembly 2 design structurally distributes the load-bearing pressure, greatly improving the overall load-bearing capacity of the pulley system. It can better support the weight of connecting components and adapt to different load requirements ranging from tens to hundreds of kilograms. Simultaneously, the symmetrical double-row design also increases the stability of connecting components such as door panels during sliding, reducing swaying caused by uneven force on one side and making the sliding process smoother. Multiple positioning wheels 4 are installed on the outer side of the pulley load-bearing body 1 to contact the inner wall of the guide rail groove 5, guiding the pulley load-bearing body 1 to move along the guide rail groove 5 and preventing jamming. Specifically, the pulley load-bearing body 1 is an integrated aluminum alloy metal block. Aluminum alloy has advantages such as light weight, high strength, and corrosion resistance. 6061-T6 aluminum alloy can be selected, which has advantages such as light weight, high strength (tensile strength up to 310MPa), and corrosion resistance. Using an integrated aluminum alloy metal block as the pulley load-bearing body, manufactured through precision casting or CNC machining, not only ensures high load-bearing capacity but also reduces the overall weight of the pulley assembly, facilitating installation and use. Furthermore, the corrosion resistance of aluminum alloy also helps to extend the service life of the pulley assembly.

[0028] The pulley assembly 2 includes a pulley housing 2-1 and two pulley components 2-2 mounted within the housing via a shaft 6. A shaft hole 2-3 for a load-bearing shaft 3 is provided in the middle of the pulley housing 2-1. Of course, a bearing is installed in the shaft hole 2-3 to allow the pulley assembly 2 to swing more smoothly around the load-bearing shaft. The pulley housing 2-1 encloses the pulley components 2-2, minimizing their contact with the outside environment and effectively preventing dust particles from entering the pulley components, thus greatly improving their service life. An arc-shaped recess 1-2 is provided at the end of the pulley groove 1-1, corresponding to the pulley component 2-2. This prevents the pulley component 2-2 from contacting the end of the pulley groove 1-1 during rotation, reducing unnecessary friction and collisions and ensuring smooth rotation of the pulley assembly.

[0029] Specifically, positioning wheel mounting grooves 1-3 are provided on the left front, left rear, right front, and right rear sides of the pulley support body 1. Positioning wheels 4 are horizontally installed in the positioning wheel mounting grooves 1-3, and the positioning wheel axle 9 of the positioning wheel 4 extends vertically downward from the top of the pulley support body 1. The positioning wheel 4 is made of rubber, such as nitrile rubber, which reduces friction and noise with the inner wall of the guide rail groove and can also buffer the impact force caused by the bending deformation of the guide rail groove to a certain extent.

[0030] The top of the pulley load-bearing body 1 is provided with a groove 1-4, and two holes 1-5 are provided in the groove 1-4. A spring pin 7 is installed in the hole 1-5. The function of the spring pin 7 is to provide positioning and buffering when the pulley assembly is connected to other components (such as the door leaf), so that the entire sliding process is more stable and quiet. When the pulley assembly drives the door leaf to slide, the spring pin can buffer the vibration of the door leaf, so that the door leaf runs more smoothly, while also ensuring the firmness of the connection and facilitating assembly and disassembly.

[0031] In this technical solution, the self-balancing pulley assembly is connected and fixed to components such as door panels via spring pins 7 in the top grooves 1-4. When the pulley assembly slides in the guide rail, if the guide rail is uneven, the pulley assembly can automatically adjust its height by rotating its load-bearing shaft relative to the pulley load-bearing body, ensuring smooth sliding. Simultaneously, the positioning wheel on the outer side of the pulley load-bearing body contacts the inner wall of the guide rail groove, guiding the movement of the pulley load-bearing body and preventing jamming when the guide rail bends or deforms. The pulley housing encloses the pulley components, effectively preventing external sand and dust particles from entering and extending the service life of the pulley components. The double-row pulley assembly improves the overall load-bearing capacity and stability, while the rubber positioning wheel and spring pin reduce friction and noise during sliding, ensuring smooth operation.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.

Claims

1. A self-balancing pulley system, characterized in that, It includes a pulley support body and a pulley assembly. A pulley groove and a support shaft are provided on the side of the pulley support body. The pulley assembly is movably disposed in the pulley groove and is rotatably connected to the pulley support body through the support shaft. Multiple positioning wheels are provided on the outside of the pulley support body for contacting the inner wall of the guide rail groove and guiding the pulley support body to move along the guide rail groove.

2. The self-balancing pulley system according to claim 1, characterized in that, The main body of the pulley is equipped with pulley grooves and corresponding pulley assemblies on both the left and right sides.

3. A self-balancing pulley system according to claim 2, characterized in that, The pulley assembly includes a pulley housing and at least two pulley components mounted in the pulley housing via shafts. A shaft hole for accommodating a load-bearing shaft is provided in the middle of the pulley housing.

4. A self-balancing pulley system according to claim 3, characterized in that, The end of the pulley groove is provided with an arc-shaped recess, which corresponds to the pulley component.

5. A self-balancing pulley system according to claim 1, characterized in that, Positioning wheel mounting grooves are provided on the left front and left rear sides, and right front and right front sides of the pulley load-bearing body. The positioning wheels are horizontally installed in the positioning wheel mounting grooves.

6. A self-balancing pulley system according to claim 1, characterized in that, The top of the pulley's load-bearing body is provided with a groove, and there are two or more holes in the groove, with spring pins installed in the holes.

7. A self-balancing pulley system according to claim 1, characterized in that, The main load-bearing body of the pulley is an integrated aluminum alloy metal block.

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