A caster with anti-jamming function

Abstract

This utility model discloses a caster with anti-jamming function, including a mounting plate, a mounting frame below the mounting plate, a mounting assembly inside the mounting frame, and a pulley mounted on the mounting frame via the mounting assembly. A fixing frame is fixedly mounted on one side of the mounting plate, allowing for convenient replacement of the pulley via the mounting assembly. A plug passes through the round holes on both sides of the mounting frame and engages with the pulley. A threaded post is fixed in place with the threaded groove of the plug. During replacement, simply unscrew the threaded post and pull out the plug to remove the pulley, significantly shortening maintenance time. Simultaneously, a first scraper and two second scrapers form a multi-directional impurity cleaning structure. The first scraper is connected to the fixing frame via a first spring and a first telescopic rod, and the second scrapers are connected to the fixing block via a second spring and a second telescopic rod. When the pulley rolls, the scraper scrapes away dirt against the wheel surface. When encountering hard stones, the spring contracts to buffer the impact, and the scraper automatically resets after the stone passes, achieving continuous cleaning and reducing the risk of impurity accumulation.

Description

Technical Field

[0001] This utility model relates to the field of caster technology, and in particular to a caster with anti-jamming function. Background Technology

[0002] Casters, as key components for enabling equipment movement, are widely used in industrial production lines, logistics and transportation equipment, medical devices, furniture and other fields. Their core structure typically includes the wheel body, bearings, steering mechanism (such as the steering shaft of a swivel wheel), and mounting bracket, achieving flexible movement of equipment through rolling friction.

[0003] When casters are rolling, impurities such as stones, mud, and sand on the road surface easily adhere to the side of the wheel and the contact surface between the wheel and the ground. Over time, these impurities can accumulate or even jam, leading to a sharp increase in the rolling resistance of the casters, accelerated structural wear, and the need for frequent equipment shutdowns for maintenance. Therefore, a caster with anti-jamming function is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a caster with an anti-jamming function, which solves the problems mentioned in the background art.

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

[0006] A caster with anti-jamming function includes a mounting plate, a mounting frame below the mounting plate, a mounting assembly inside the mounting frame, a pulley mounted on the mounting frame via the mounting assembly, a fixing frame fixedly mounted on one side of the mounting plate, the fixing frame being V-shaped, two circular grooves being formed on the bottom side of the fixing frame, a first spring fixedly mounted on the inner wall of one side of each of the two circular grooves, the other end of the two first springs being fixedly connected to the same first scraper, the other side of the first scraper being in contact with the surface of the pulley, and side cleaning assemblies being provided on both sides of the mounting frame.

[0007] Preferably, the mounting assembly includes a mounting bracket with round holes on both sides, a single rod inserted into the two round holes, a pulley movably sleeved on the outside of the rod, and a threaded groove on one end of the rod, with a threaded post threadedly installed in the groove.

[0008] Preferably, the side cleaning component includes a mounting bracket with fixing blocks fixedly installed on both sides, and a connecting block fixedly connected to one side of each fixing block. The two connecting blocks are symmetrically arranged, and a set of circular grooves is opened on the bottom side of each connecting block, with two circular grooves in each set.

[0009] Preferably, a second spring is fixedly installed in each of the two sets of circular grooves, and a second scraper is fixedly connected to the other end of each of the two sets of second springs. The opposite surfaces of the two second scrapers are respectively in contact with the two sides of the pulley.

[0010] Preferably, each of the two sets of second springs is provided with a second telescopic rod, and the two ends of the two sets of second telescopic rods are respectively fixedly connected to one side of the inner wall of the circular groove and the top side of the second scraper.

[0011] Preferably, each of the two first springs is provided with a first telescopic rod, and the two ends of the two first telescopic rods are respectively fixedly connected to one side of the inner wall of the circular groove and the top side of the first scraper.

[0012] Preferably, a connecting column is fixedly installed on the bottom side of the mounting plate, and the top side of the mounting bracket is fixedly connected to the bottom end of the connecting column. The mounting plate has two mounting holes, and bolts are threaded into both mounting holes.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This caster with anti-jamming function allows for convenient replacement of the pulley through the installation components. The insert rod passes through the round holes on both sides of the mounting bracket and is sleeved onto the pulley. The threaded post and the threaded groove of the insert rod are fitted together for fixation. When replacing, simply unscrew the threaded post and pull out the insert rod to remove the pulley, which greatly shortens the maintenance time. At the same time, the first scraper and two second scrapers form a multi-directional impurity cleaning structure. The first scraper is connected to the fixed frame through the first spring and the first telescopic rod, and the second scraper is connected to the fixed block through the second spring and the second telescopic rod. When the pulley rolls, the scraper scrapes away the mud by adhering to the wheel surface. When encountering hard stones, the spring contracts to buffer the movement. After the stone passes, it automatically resets, achieving continuous cleaning and reducing the risk of impurity accumulation. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0016] Figure 3 This is a schematic diagram of some parts of the structural fixing frame of this utility model;

[0017] Figure 4 This is a schematic diagram of some parts of the structural mounting frame of this utility model.

[0018] In the diagram: 1. Mounting plate; 2. Mounting hole; 3. Bolt; 4. Connecting post; 5. Mounting bracket; 6. Insert rod; 7. Threaded groove; 8. Threaded post; 9. Pulley; 10. Fixing bracket; 11. First spring; 12. First scraper; 13. First telescopic rod; 14. Fixing block; 15. Connecting block; 16. Second spring; 17. Second telescopic rod; 18. Second scraper. Detailed Implementation

[0019] 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.

[0020] Reference Figure 1-4 A caster with anti-jamming function includes a mounting plate 1, a mounting bracket 5 below the mounting plate 1, a mounting assembly inside the mounting bracket 5, and a pulley 9 mounted on the mounting bracket 5 via the mounting assembly. A fixing bracket 10 is fixedly mounted on one side of the mounting plate 1. The fixing bracket 10 is V-shaped and has two circular grooves on its bottom side. A first spring 11 is fixedly mounted on the inner wall of one side of each of the two circular grooves. The other end of the two first springs 11 is fixedly connected to the same first scraper 12. The other side of the first scraper 12 is in contact with the surface of the pulley 9. Side cleaning assemblies are provided on both sides of the mounting bracket 5. Because of the first scraper 12 and the fact that one side of the first scraper 12 is in contact with the surface of the pulley 9, when the pulley 9 rolls forward, the surface of the scraper 9 is cleaned. When removing impurities such as mud and stones, the first scraper 12 can scrape off the mud and impurities adhering to the pulley 9. Two first springs 11 are fixedly connected to the other side of the first scraper 12. When the first scraper 12 comes into contact with a hard stone, the two first springs 11 will retract into the circular groove opened in the fixing frame 10. After the first scraper 12 passes the hard stone, the elastic force of the two first springs 11 will be restored, so that they will come into contact with the surface of the pulley 9 again. As the first scraper 12 comes into contact with the stone repeatedly, it can scrape the stone off by relying on the loosening during the previous contacts. With the help of the two second scrapers 18 to clean the side of the pulley 9, the adhesion of mud and stones can be greatly reduced, thereby preventing the pulley 9 from getting stuck.

[0021] Specifically, the mounting components include two circular holes on both sides of the mounting bracket 5, into which the same insert rod 6 is inserted. The pulley 9 is movably sleeved on the outside of the insert rod 6. One end of the insert rod 6 has a threaded groove 7, into which a threaded post 8 is threadedly installed. Because the threaded post 8 is threadedly installed in the threaded groove 7 of the insert rod 6, when the pulley 9 needs to be replaced, simply unscrew the threaded post 8 from the insert rod 6, and then pull the insert rod 6 to remove it from the mounting bracket 5. After removal, the pulley 9 will fall off, and then a new pulley 9 can be replaced for use.

[0022] Specifically, the side cleaning component includes a mounting bracket 5 with fixing blocks 14 fixedly installed on both sides. Each of the two fixing blocks 14 has a connecting block 15 fixedly connected to one side. The two connecting blocks 15 are symmetrically arranged. Each of the two connecting blocks 15 has a set of circular grooves on its bottom side. Each set of circular grooves has two grooves. Each of the two sets of circular grooves has a set of second springs 16 fixedly installed in its grooves. The other end of each of the two sets of second springs 16 is fixedly connected to a second scraper 18. The opposite surfaces of the two second scrapers 18 are respectively in contact with the two sides of the pulley 9. By setting two second scrapers 18, the two second scrapers 18 can clean the mud on both sides of the pulley 9. In conjunction with the two sets of second springs 16, the two second scrapers 18 can cyclically contact the stones on the side and continue to scrape the stones off by relying on the loosening during the previous contacts.

[0023] Specifically, each of the two sets of second springs 16 is provided with a second telescopic rod 17. The two ends of the two sets of second telescopic rods 17 are fixedly connected to one side of the inner wall of the circular groove and the top side of the second scraper 18, respectively. Each of the two first springs 11 is provided with a first telescopic rod 13. The two ends of the two first telescopic rods 13 are fixedly connected to one side of the inner wall of the circular groove and the top side of the first scraper 12, respectively. By providing the second telescopic rods 17 and the first telescopic rods 13, and because the second telescopic rods 17 and the first telescopic rods 13 are located in the second springs 16 and the first springs 11, respectively, the second telescopic rods 17 and the first telescopic rods 13 can play a limiting role when the second springs 16 and the first springs 11 contract, so as to avoid excessive twisting when the second springs 16 and the first springs 11 contract severely.

[0024] Specifically, a connecting column 4 is fixedly installed on the bottom side of the mounting plate 1, and the top side of the mounting bracket 5 is fixedly connected to the bottom end of the connecting column 4. The mounting plate 1 has two mounting holes 2, and bolts 3 are threaded into both mounting holes 2. The connecting column 4 is used to fix the mounting bracket 5. With two mounting holes 2, when the caster needs to be installed on the trolley or equipment, simply align the two mounting holes 2 with the mounting slots reserved on the trolley or equipment, and then use the bolts 3 to install and fix it.

[0025] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be any conventional known device, such as a computer, that can control the operation of the electrical components mentioned in the article.

[0026] In use: Two bolts 3 symmetrically arranged on the mounting plate 1 facilitate quick installation and removal of the pulley 9, ensuring easy operation during maintenance or replacement. When the pulley 9 rolls forward and accumulates dirt, stones, or other impurities, the first scraper 12 located on one axial side of the pulley 9 begins to function. One side of the scraper 12 remains in contact with the outer circumference of the pulley 9, while the other side is connected to the fixing frame 10 via two first springs 11. When the first scraper 12 encounters a hard stone, the reaction force generated by the stone compresses the first spring 11, causing it to retract into the circular groove opened in the fixing frame 10, preventing the scraper from being damaged by rigid collision. After the stone passes, the elastic potential energy of the spring is released, pushing the first scraper 12 to re-contact the surface of the pulley 9. This elastic scraping mechanism not only effectively removes dirt... It can also gradually loosen stubborn stones through repeated contact until they are completely scraped off. Furthermore, the pulley 9 is equipped with second scrapers 18 on both sides, which further enhances the all-round cleaning capability. Each second scraper 18 is elastically connected to the mounting structure through two sets of second springs 16. Its working principle is similar to that of the first scraper 12. When stones attached to the side obstruct the movement of the scraper, the spring contracts to buffer the impact force. After the stones pass, the scraper resets under the elastic action and continues cleaning. Through the cleaning of the outer circumference of the pulley 9 by the first scraper 12 and the synchronous cleaning of the two sides by the second scraper 18, a multi-directional anti-debris adhesion is formed, which fundamentally avoids the problem of pulley 9 failure caused by impurities jamming, and significantly improves the reliability and service life of the pulley 9 under complex working conditions.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A caster with anti-locking function, comprising a mounting plate (1), characterized in that, A mounting frame (5) is provided below the mounting plate (1). A mounting component is provided inside the mounting frame (5). A pulley (9) is provided on the mounting frame (5) through the mounting component. A fixing frame (10) is fixedly installed on one side of the mounting plate (1). The fixing frame (10) is V-shaped. Two circular grooves are opened on the bottom side of the fixing frame (10). A first spring (11) is fixedly installed on the inner wall of one side of each of the two circular grooves. The other end of the two first springs (11) is fixedly connected to the same first scraper (12). The other side of the first scraper (12) is in contact with the surface of the pulley (9). Side cleaning components are provided on both sides of the mounting frame (5).

2. The caster with anti-lock function according to claim 1, characterized in that, The mounting assembly includes a mounting bracket (5) with round holes on both sides, and the same insert rod (6) is inserted into the two round holes. A pulley (9) is movably sleeved on the outside of the insert rod (6). A threaded groove (7) is opened at one end of the insert rod (6), and a threaded column (8) is threaded in the threaded groove (7).

3. The caster with anti-lock function according to claim 1, characterized in that, The side cleaning component includes a mounting bracket (5) with fixing blocks (14) fixedly installed on both sides. Each of the two fixing blocks (14) is fixedly connected to a connecting block (15) on one side. The two connecting blocks (15) are symmetrically arranged. Each of the two connecting blocks (15) has a set of circular grooves on its bottom side, and each set of circular grooves has two grooves.

4. The caster with anti-lock function according to claim 3, characterized in that, A second spring (16) is fixedly installed in each of the two sets of circular grooves. The other end of each set of second springs (16) is fixedly connected to a second scraper (18). The opposite surfaces of the two second scrapers (18) are respectively attached to the two sides of the pulley (9).

5. The caster with anti-lock function according to claim 4, characterized in that, Each of the two sets of second springs (16) is equipped with a second telescopic rod (17), and the two ends of the two sets of second telescopic rods (17) are fixedly connected to the inner wall of one side of the circular groove and the top side of the second scraper (18), respectively.

6. The caster with anti-lock function according to claim 1, wherein, Each of the two first springs (11) is provided with a first telescopic rod (13), and the two ends of the two first telescopic rods (13) are fixedly connected to one side of the inner wall of the circular groove and the top side of the first scraper (12), respectively.

7. The caster with anti-lock function according to claim 1, characterized in that, The mounting plate (1) has a connecting column (4) fixedly installed on its bottom side. The top side of the mounting bracket (5) is fixedly connected to the bottom end of the connecting column (4). The mounting plate (1) has two mounting holes (2), and bolts (3) are threaded into both mounting holes (2).

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