Adjustable pulley convenient to install

Abstract

The utility model relates to the technical field of pulley adjustment, and discloses a convenient-to-install adjustable pulley which comprises an installation plate and a protection box, sliding grooves are formed in the left side and the right side of the protection box, a fixing rod is slidably connected to the top of the installation plate, a spring is arranged on the outer wall of the fixing rod in a sleeved mode, and a connecting rod is slidably connected to the interior of the installation plate. A fixing column is fixedly connected to one end of the connecting rod, a fixing block is fixedly connected to the outer wall of the fixing column, a sliding plate is fixedly connected to one end of the fixing column, and a protective shell is fixedly connected to the bottom of the fixing block. The mounting plate is slidably connected with the top of the fixing rod and the inside of the connecting rod respectively, so that the fixing rod and the connecting rod can slide at corresponding positions, the spring is sleeved on the outer wall of the fixing rod, the functions of buffering and assisting the fixing rod in resetting are realized by means of elastic deformation, and the fixing rod is matched with the through groove at the top end of the connecting rod for fixing, so that mounting and dismounting are quicker and more convenient; and the assembly efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of pulley adjustment technology, and in particular to an adjustable pulley that is easy to install. Background Technology

[0002] A pulley is a small wheel with grooves around its perimeter that can rotate around an axis. It consists of a grooved disc that can rotate around a central axis and a flexible cord (rope, tape, steel cable, chain, etc.) that passes over the disc. A simple machine that can rotate around a central axis is called a pulley.

[0003] Traditional pulleys typically require complex bolting and welding for installation, which demands specialized tools and skills, and consumes significant time and manpower. In special circumstances, such as confined spaces or high-altitude operations, the installation difficulty increases considerably. Lacking adjustability, the position and function of traditional pulleys are often difficult to change after installation. Once installed, adjusting the pulley height usually requires disassembly and reinstallation, which is not only troublesome but may also damage surrounding structures. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an adjustable pulley that is easy to install, thus solving the problems of complicated installation processes and the inability to adjust the height of existing pulleys.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An adjustable pulley for easy installation includes a mounting plate and a protective box. The protective box has grooves on both the left and right sides. A fixing rod is slidably connected to the top of the mounting plate. A spring is sleeved on the outer wall of the fixing rod. A connecting rod is slidably connected to the inside of the mounting plate. A fixing post is fixedly connected to one end of the connecting rod. A fixing block is fixedly connected to the outer wall of the fixing post. A sliding plate is fixedly connected to one end of the fixing post. A protective shell is fixedly connected to the bottom of the fixing block.

[0007] Furthermore, the bottom of the protective shell is fixedly connected to two protective plates, the inside of the two protective plates is fixedly connected to a fixed shaft, and the outer wall of the fixed shaft is rotatably connected to a roller.

[0008] Furthermore, the top of the protective box is threaded with bolts, the inner wall of the protective box is fixedly connected with a limiting plate, and a groove is provided on the left side of the protective box.

[0009] Furthermore, the inner wall of the protective box is provided with a sliding groove, and a connecting block is slidably connected inside the sliding groove. A positioning plate is fixedly connected to one side of the connecting block.

[0010] Furthermore, the mounting plate is slidably connected inside the slide groove on the left side of the protective box, and the sliding plate is slidably connected inside the slide groove on the right side of the protective box.

[0011] Furthermore, a positioning groove is provided on the rear side of the protective shell corresponding to one side of the positioning plate, and the size of the positioning groove is adapted to the positioning plate.

[0012] Furthermore, the bottom end of the bolt is rotatably connected to the inside of the positioning plate.

[0013] Furthermore, the size of the groove is adapted to the size of the slide plate.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the mounting plate is slidably connected to the top of the fixing rod and the inside of the connecting rod, so that the two can slide in their respective positions. The spring is sleeved on the outer wall of the fixing rod, and its elastic deformation realizes the function of buffering and assisting the fixing rod to reset. The fixing rod and the top slot of the connecting rod are fixed together, making the installation and disassembly faster and more convenient, and greatly improving the assembly efficiency.

[0016] 2. In this utility model, the bolt is threadedly connected to the protective box and rotatably connected to the positioning plate. The rotating bolt can push or pull the positioning plate to make lifting and lowering movements. The connecting block is slidably connected to the inner wall groove of the protective box and fixedly connected to the positioning plate, providing guidance and stable support for the lifting and lowering of the positioning plate. The inner wall of the protective box has a limit plate to restrict the lifting and lowering range of the positioning plate, so that the positioning plate can be lifted and lowered stably and accurately, which is convenient for operation and control and ensures the rationality of the movement range. Attached Figure Description

[0017] Figure 1 A perspective view of an adjustable pulley that is easy to install according to this utility model;

[0018] Figure 2 This is a schematic diagram of a limiting plate for an adjustable pulley that is easy to install, as proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of a fixing rod for an adjustable pulley that is easy to install, as proposed in this utility model.

[0020] Legend:

[0021] 1. Protective box; 2. Limiting plate; 3. Bolt; 4. Positioning plate; 5. Connecting block; 6. Groove; 7. Slide plate; 8. Mounting plate; 9. Fixing rod; 10. Spring; 11. Connecting rod; 12. Fixing block; 13. Fixing column; 14. Protective shell; 15. Guard plate; 16. Fixing shaft; 17. Roller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figures 1-3 This utility model provides an embodiment of an adjustable pulley that is easy to install, including a mounting plate 8, a protective box 1, and sliding grooves on both the left and right sides of the protective box 1. A fixing rod 9 is slidably connected to the top of the mounting plate 8, and a spring 10 is sleeved on the outer wall of the fixing rod 9. A connecting rod 11 is slidably connected inside the mounting plate 8, and a fixing post 13 is fixedly connected to one end of the connecting rod 11. A fixing block 12 is fixedly connected to the outer wall of the fixing post 13, and a sliding plate 7 is fixedly connected to one end of the fixing post 13. A protective shell 14 is fixedly connected to the bottom of the fixing block 12, and two protective plates 15 are fixedly connected to the bottom of the protective shell 14. A fixing shaft 16 is fixedly connected inside the two protective plates 15. Rollers 17 are rotatably connected to the outer wall of the protective box 1. Bolts 3 are threadedly connected to the top of the protective box 1. The bottom end of the bolts 3 is rotatably connected to the inside of the positioning plate 4. Limiting plate 2 is fixedly connected to the inner wall of the protective box 1. A groove 6 is provided on the left side of the protective box 1. The size of the groove 6 is adapted to the size of the sliding plate 7. A sliding groove is provided on the inner wall of the protective box 1. A connecting block 5 is slidably connected inside the sliding groove. A positioning plate 4 is fixedly connected to one side of the connecting block 5. The mounting plate 8 is slidably connected inside the sliding groove on the left side of the protective box 1. The sliding plate 7 is slidably connected inside the sliding groove on the right side of the protective box 1. A positioning groove is provided on the rear side of the protective shell 14 corresponding to one side of the positioning plate 4. The size of the positioning groove is adapted to the positioning plate 4.

[0024] Specifically, a fixed rod 9 is slidably connected to the top of the mounting plate 8 by pulling it. A spring 10 is sleeved on the outer wall of the fixed rod 9. When the fixed rod 9 slides on the mounting plate 8, the spring 10 can buffer and reset. A connecting rod 11 is slidably connected inside the mounting plate 8. A through groove is opened at the top of the connecting rod 11. The size of the through groove matches the size of the fixed rod 9. When the connecting rod 11 needs to be fixed, the fixed rod 9 is pulled, and then the bottom end of the fixed rod 9 is inserted into the through groove at the top of the connecting rod 11 to fix it. A fixed post 13 is fixedly connected to one end of the connecting rod 11. When the sliding plate 7 at the right end of the fixed post 13 slides into the sliding groove on the right side of the protective box 1 through the groove 6, one end of the connecting rod 11 is then connected to the fixed post 13 through the sliding groove inside the mounting plate 8 to fix it. A fixed block 12 is fixedly connected to the outer wall of the fixed post 13, and a sliding plate 7 is fixedly connected to one end of the fixed post 13. The fixing block 12 serves to connect the fixing column 13 and other components. The sliding plate 7 is indirectly connected to the mounting plate 8 through the fixing column 13. A protective shell 14 is fixedly connected to the bottom of the fixing block 12. A positioning groove is opened on the rear side of the protective shell 14 corresponding to one side of the positioning plate 4. The size of the positioning groove is adapted to the positioning plate 4. The positioning plate 4 can be inserted into the positioning groove to fix the protective shell 14. The sliding of the connecting block 5 in the groove provides a basis for adjusting the position of the positioning plate 4. By moving the connecting block 5, the positioning plate 4 can change its relative position within a certain range, thereby adapting to different installation and usage requirements. Two protective plates 15 are fixedly connected to the bottom of the protective shell 14. A fixing shaft 16 is fixedly connected inside the two protective plates 15. A roller 17 is rotatably connected to the outer wall of the fixing shaft 16. The protective plates 15 are used to fix the fixing shaft 16. The roller 17 can rotate around the fixing shaft 16 to facilitate the movement of the device. A bolt 3 is threadedly connected to the top of the protective box 1. The bottom end of the bolt 3 is rotatably connected to the inside of the positioning plate 4. The position of the positioning plate 4 can be adjusted by rotating the bolt 3. A limiting plate 2 is fixedly connected to the inner wall of the protective box 1, which limits the positioning plate 4 within the protective box 1. A groove 6 is provided on the left side of the protective box 1, the size of which is adapted to the size of the sliding plate 7. The sliding plate 7 can slide within the groove 6. When installing the pulley, the sliding plate 7 enters the slide groove on the right side of the protective box 1 through the groove 6. The mounting plate 8 is slidably connected to the slide groove on the left side of the protective box 1. This connection method allows the mounting plate 8 to slide relative to the protective box 1. The slide groove provides a track and guide for the movement of the mounting plate 8, ensuring stable and accurate movement. The sliding plate 7 is slidably connected to the slide groove on the right side of the protective box 1. Similar to the mounting plate 8, the slide groove provides a track and guide for the movement of the sliding plate 7. The sliding of the sliding plate 7 within the slide groove can achieve specific functions, enabling flexible fixing and adjustment of the internal components of the device, while facilitating the movement and installation of the device, thus improving its practicality and reliability.

[0025] Working principle: The relative position of the mounting plate 8 is adjusted by sliding it within a groove on the left side of the protective box 1, allowing the position of the mounting plate 8 on the protective box 1 to be changed according to actual installation needs. Simultaneously, a fixing rod 9 is slidably connected to the top of the mounting plate 8, and a spring 10 is fitted onto its outer wall. A bolt 3 is threadedly connected to the top of the protective box 1. By rotating the bolt 3, it can move downwards along the thread, and its bottom end is rotatably connected to the inside of the positioning plate 4. As the bolt 3 rotates downwards, the positioning plate 4 is gradually pressed down. A limiting plate 2 is fixedly connected to the inner wall of the protective box 1. It can limit the movement of the positioning plate 4 to a certain extent, ensuring that the positioning plate 4 moves within a reasonable range. Finally, the positioning plate 4 contacts and presses against the external mounting surface, thereby fixing the entire pulley device in the corresponding position and completing the installation and fixing work. The two guard plates 15 at the bottom of the protective shell 14 are fixedly connected to the fixed shaft 16. The roller 17 is sleeved on the outer wall of the fixed shaft 16 and can rotate around the fixed shaft 16. This constitutes the basic rotation structure of the pulley, which allows the pulley to roll smoothly on the corresponding surface and realize the function of convenient movement. The fixed column 13 fixedly connected to one end of the connecting rod 11, as well as the fixed block 12 and the sliding plate 7 fixed on the fixed column 13, work together. The sliding plate 7 at one end of the fixed column 13 is slidably connected to the slide groove on the right side of the protective box 1. When it is necessary to adjust the height or position of the pulley, the positioning plate 4 can be driven by rotating the bolt 3, and then the sliding plate 7 can be driven to slide in the slide groove. This allows the fixed block 12, the protective shell 14 and the entire pulley roller 17 to be adjusted in the up and down directions. The protective shell 14 has a positioning groove on the rear side corresponding to the positioning plate 4. After the adjustment is in place, the positioning plate 4 can be inserted into the positioning groove to further position and stabilize the pulley position, ensuring that the pulley is maintained in a suitable and adjusted position during operation.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable pulley for easy installation, characterized in that Including installation plate (8), protection box (1), both sides of the protection box (1) are provided with a sliding slot, the top of the installation plate (8) is slidably connected with a fixed rod (9), the outer wall of the fixed rod (9) is provided with a spring (10), the inside of the installation plate (8) is slidably connected with a connecting rod (11), one end of the connecting rod (11) is fixedly connected with a fixed column (13), the outer wall of the fixed column (13) is fixedly connected with a fixed block (12), one end of the fixed column (13) is fixedly connected with a sliding plate (7), the bottom of the fixed block (12) is fixedly connected with a protection shell (14).

2. A conveniently mounted adjustable pulley according to claim 1, characterized in that: The bottom of the protection shell (14) is fixedly connected with two guard plates (15), the inside of the two guard plates (15) is fixedly connected with a fixed shaft (16), and the outer wall of the fixed shaft (16) is rotatably connected with a roller (17).

3. A conveniently mounted adjustable pulley according to claim 1, wherein: The top of the protection box (1) is threadedly connected with a bolt (3), the inner wall of the protection box (1) is fixedly connected with a limiting plate (2), and the left side of the protection box (1) is provided with a groove (6).

4. A conveniently mounted adjustable pulley as claimed in claim 1 wherein: The inner wall of the protection box (1) is provided with a sliding slot, and the inside of the sliding slot is slidably connected with a connecting block (5).

5. A conveniently mounted adjustable pulley as claimed in claim 1 wherein: The installation plate (8) is slidably connected in the sliding slot on the left side of the protection box (1), and the sliding plate (7) is slidably connected in the sliding slot on the right side of the protection box (1).

6. A conveniently mounted adjustable pulley as claimed in claim 1 wherein: The rear side of the protection shell (14) is provided with a positioning groove corresponding to one side of the positioning plate (4), and the size of the positioning groove is matched with the positioning plate (4).

7. A conveniently mounted adjustable pulley as claimed in claim 3 wherein: The bottom end of the bolt (3) is rotatably connected in the inside of the positioning plate (4).

8. A conveniently mounted adjustable pulley according to claim 3, wherein: The size of the groove (6) is matched with the size of the sliding plate (7).

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