High-hardness zinc alloy structure

Abstract

The utility model discloses a high-hardness zinc alloy structure, and relates to the field of metal material application, the high-hardness zinc alloy structure comprises a bottom plate, four corners of the bottom of the bottom plate are provided with first connecting assemblies convenient for dismounting and mounting of supporting wheels, and one side of each first connecting assembly is provided with a second connecting assembly; during installation, a connecting column and a second limiting column of the second connecting block can be rapidly and accurately inserted into a rectangular hole and a limiting hole of the first connecting block respectively, and then under the elastic force effect of a first compression spring, the first connecting block and the second connecting block are connected through a second compression spring. When a first connecting assembly is installed on a bottom plate, a shifting plate is pushed, a limiting rod overcomes the elastic force of a second compression spring, after the shifting plate is loosened, an inserting block is automatically inserted into a positioning groove, stable connection of the second connecting block, the first connecting block and the bottom plate is achieved, and no complex tool is needed in the whole process; and manpower and time are greatly saved.

Description

Technical Field

[0001] This application relates to the field of metallic materials applications, and in particular to a high-hardness zinc alloy structure. Background Technology

[0002] Zinc alloy casters have a high load-bearing capacity. The wheel frame may be made of zinc alloy, which has good casting properties, high strength, and corrosion resistance to provide good structural support and stability.

[0003] Furthermore, the existing patent publication number CN220923701U discloses a caster and a trolley. The end of the device is connected to the bracket via a vertical shaft. This connection method causes metal-to-metal wear during the rotation of the caster. In particular, the caster is frequently subjected to impacts during movement, such as vibrations generated when starting quickly, braking suddenly, or passing over uneven surfaces. The vertical shaft is also subjected to a large instantaneous impact force, which accelerates the wear. This dynamic load impact may cause fatigue cracks inside the vertical shaft and wear on the outside. Over time, the cracks will gradually expand, eventually leading to damage to the vertical shaft.

[0004] Therefore, in a factory, some trolleys require regular inspection of their casters during long-term use, and damaged casters need to be removed and replaced in a timely manner. However, the removal and replacement of casters inevitably delays the use of the trolleys. To facilitate the removal and installation of casters, this solution proposes a high-hardness zinc alloy structure. Utility Model Content

[0005] To address the issue of low caster replacement efficiency, this application provides a high-hardness zinc alloy structure.

[0006] This application provides a high-hardness zinc alloy structure using the following technical solution:

[0007] A high-hardness zinc alloy structure includes a base plate, with first connecting components for easy assembly and disassembly of support wheels at the four bottom corners of the base plate, a second connecting component on one side of the first connecting component, and fixing components for fixing the first connecting component and the second connecting component at the four corners of the base plate.

[0008] By adopting the above technical solution, the assembly of the first connecting component and the second connecting component not only facilitates the replacement of the caster, but also facilitates the replacement of the ball bearings in the caster connection part. The installation of the fixing component is used to fix the first connecting component and the second connecting component, thereby improving the convenience of disassembly and assembly.

[0009] Preferably, the first connecting component includes a first connecting block, a first connecting ring fixedly disposed at the bottom of the first connecting block, a first arc-shaped groove annularly formed at the bottom of the first connecting ring, and a first limiting groove formed at the center of the first arc-shaped groove at the bottom of the first connecting block. The second connecting component includes a second connecting block, a second connecting ring fixedly disposed at the bottom of the second connecting block, a second arc-shaped groove annularly formed at the bottom of the second connecting ring, and a second limiting groove formed at the center of the second arc-shaped groove at the bottom of the second connecting block. A vertical shaft movably passes through the first limiting groove and the second limiting groove. A zinc alloy frame is fixedly connected to the bottom end of the vertical shaft. A third arc-shaped groove annularly formed at the top of the zinc alloy frame. A ball bearing rotatably connected to the top of the third arc-shaped groove and rotatably connected to the second arc-shaped groove and the first arc-shaped groove is rotatably connected.

[0010] By adopting the above technical solution, the first connecting block is used to connect and fix the components, providing a connecting support. The first connecting ring provides a rotation track for the ball bearings, enabling the components to rotate flexibly. The first arc groove cooperates with the ball bearings to allow the components to rotate relative to each other and reduce friction. The first and second limiting grooves together limit and position the vertical shaft to ensure accurate installation. The second connecting block is also used to connect and fix the components, providing a connecting support. The second connecting ring provides a rotation track for the ball bearings, enabling the components to rotate flexibly. The second arc groove cooperates with the ball bearings to allow the components to rotate relative to each other and reduce friction. The vertical shaft provides vertical support and a rotation axis for the overall structure. The zinc alloy frame supports the fixed components and provides a rotation track for the ball bearings. The third arc groove cooperates with other arc grooves to allow the ball bearings to rotate flexibly and reduce friction. The ball bearings reduce the friction between the components by rolling.

[0011] Preferably, one side of the first connecting block is provided with a plurality of limiting holes, a rectangular hole is symmetrically provided on the side of the first connecting block near the limiting holes, a rectangular groove communicating with the rectangular hole is provided on the side of the first connecting block away from the rectangular hole, and a positioning groove is symmetrically provided on the side of the first connecting block near the rectangular groove.

[0012] By adopting the above technical solution, the limiting hole on the first connecting block is used to cooperate with other components to limit the relative position of the components and prevent them from moving or rotating at will. The rectangular holes symmetrically opened on the side near the limiting hole can be inserted and cooperate with other components, play a role in weight reduction, or be used for wiring and ventilation, etc. The rectangular groove communicating with the rectangular hole facilitates the installation and disassembly of the components that cooperate with the rectangular hole, while the positioning grooves symmetrically opened on the side near the rectangular hole provide positioning for other components to ensure accurate installation.

[0013] Preferably, one side of the second connecting block is symmetrically provided with connecting posts that are inserted into rectangular holes, and the ends of the connecting posts are provided with slots. A plurality of second limiting posts that are inserted into limiting holes are fixedly installed on one side of the second connecting block.

[0014] By adopting the above technical solution, the symmetrically arranged connecting posts on the second connecting block are used to insert into the rectangular holes of the first connecting block to achieve the connection between the two. The slots at the ends are used to further cooperate with other components. Multiple second limiting posts are used to insert into the limiting holes of the first connecting block, which plays the role of limiting the relative position of the second connecting block and the first connecting block and preventing arbitrary movement or rotation.

[0015] Preferably, a fixing plate is symmetrically fixedly installed inside the rectangular groove, and a first limiting post is movably inserted through the fixing plate and inserted into the slot. The end of the first limiting post is fixedly connected to a toggle block that is slidably connected to the rectangular groove. A limiting ring for abutting against the second connecting ring is fixedly inserted through the outer peripheral surface of the first limiting post, and a first compression spring is sleeved on the outer peripheral surface of the first limiting post for abutting against the fixing plate and the limiting ring at both ends.

[0016] By adopting the above technical solution, the symmetrically arranged fixing plates in the rectangular groove provide movable support for the first limiting post. The first limiting post, which moves through the fixing plate, is inserted into the slot at the end of the connecting post to realize the limiting connection between the components. The actuating block connected at the end can slide in the rectangular groove to facilitate the insertion and disengagement of the first limiting post. The limiting ring fixed on the outer periphery abuts against the second connecting ring to limit the position. The first compression spring, which is sleeved on the outer periphery and abuts against the fixing plate and the limiting ring at both ends, provides elastic force to the first limiting post to ensure its stable insertion.

[0017] Preferably, the fixing component includes a limiting plate fixedly connected to the base plate, the limiting plate movably passing through a limiting rod, one end of the limiting rod being fixedly connected to a plug for insertion into the fixing plate, the outer peripheral surface of the limiting rod being sleeved with a second compression spring at both ends for abutting against the plug and the limiting plate respectively, and the end of the limiting rod away from the plug being fixedly connected to a toggle plate.

[0018] By adopting the above technical solution, the limiting plate fixedly connected to the base plate provides support for the limiting rod. The plug connected to one end of the limiting rod is used to insert into the fixed plate to fix the corresponding components. The second compression spring sleeved on the outer periphery of the limiting rod abuts against the plug and the limiting plate at both ends, providing elastic support force for the plug to ensure the stability of the insertion. The actuating plate fixedly connected to the other end of the limiting rod facilitates the operation of the limiting rod, realizing the insertion and disengagement of the plug and the fixed plate.

[0019] Preferably, a gasket is movably passed through the outer peripheral surface of the vertical shaft, and the outer peripheral surface of the gasket is provided with a toothed groove, with a plurality of the ball bearings arranged equidistantly in the toothed groove on the outer peripheral surface of the gasket.

[0020] By adopting the above technical solution, the gasket that moves through the outer periphery of the vertical shaft has toothed grooves on its outer periphery for arranging multiple balls at equal intervals in a ring, so as to achieve flexible rotational cooperation between components.

[0021] Preferably, the outer peripheral surface of the base plate is provided with a transverse groove, and the four bottom corners of the base plate are provided with third limiting grooves for inserting the first connecting block and the second connecting block, and the top of the first connecting block and the second connecting block abuts against the bottom surface of the base plate.

[0022] By adopting the above technical solution, the third limiting grooves opened at the four corners of the bottom of the base plate are used to insert the first connecting block and the second connecting block. The tops of the first connecting block and the second connecting block abut against the bottom surface of the base plate, thereby achieving a stable connection and position limitation between the components.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. During installation, the connecting post and the second limiting post of the second connecting block can be quickly and accurately inserted into the rectangular hole and the limiting hole of the first connecting block, respectively. Then, under the action of the first compression spring, the limiting post is locked into the connecting post slot, fixing the two connecting blocks. When installing the first connecting assembly to the base plate, push the actuating plate to make the limiting rod overcome the force of the second compression spring. After releasing the actuating plate, the insert automatically inserts into the positioning groove, realizing a stable connection between the second connecting block, the first connecting block and the base plate. During disassembly, push the actuating plate again to disengage the insert from the positioning groove, remove the assembly from the base plate, and then push the actuating plate to quickly disengage the limiting post from the slot, separating the two connecting blocks. The entire process requires no complicated tools, greatly saving manpower and time and improving work efficiency.

[0025] 2. The connecting blocks, through the limiting groove at the bottom, move through the vertical shaft. This not only ensures the stability of the relative position of the connecting blocks but also gives them the flexibility to rotate around the vertical shaft. At the same time, the balls roll in the arc grooves at the top of the zinc alloy frame, the bottom of the first connecting ring, and the bottom of the second connecting ring. When the support wheel is under force, the balls change the original sliding friction into rolling friction, thereby reducing the friction between metal parts. This extends the service life of the vertical shaft and the entire caster, reducing the cost of frequent caster replacements. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the application documents;

[0027] Figure 2 This is a schematic diagram of the structure of the fixed component in this application.

[0028] Figure 3 This is a bottom view of the structure of the first connecting component and the second connecting component in this application.

[0029] Figure 4 This is a side view of the first connecting component and the second connecting component of this application.

[0030] Figure 5 This is a cross-sectional view of the first connecting component and the second connecting component of this application.

[0031] Figure 6 This is a schematic diagram of the connection between the vertical axis and the zinc alloy frame in this application.

[0032] Figure 7 This is a schematic diagram of the connection between the limit rod, the insert block, and the second compression spring in this application.

[0033] Figure label:

[0034] 1. Base plate; 101. Horizontal groove; 102. Third limiting groove;

[0035] 2. First connecting assembly; 201. First connecting block; 2010. First limiting groove; 2011. Positioning groove; 202. First connecting ring; 203. First arc-shaped groove; 204. Limiting hole; 205. Rectangular hole; 206. Rectangular groove; 207. Fixing plate; 208. First limiting post; 209. Actuating block; 210. Limiting ring; 211. First compression spring;

[0036] 3. Second connecting component; 301. Second connecting block; 3010. Second limiting groove; 302. Second connecting ring; 303. Second arc-shaped groove; 304. Connecting post; 3040. Slot; 305. Second limiting post;

[0037] 4. Vertical shaft; 5. Shim; 6. Zinc alloy frame; 601. Third arc groove; 7. Ball bearing; 8. Horizontal shaft; 9. Roller; 10. Limiting plate; 11. Limiting rod; 12. Insert block; 13. Second compression spring; 14. Actuating plate. Detailed Implementation

[0038] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0039] The device's "up, down, left, right" perspectives are... Figure 1 The orientation of the attached diagram is the reference.

[0040] This application discloses a high-hardness zinc alloy structure.

[0041] Reference Figure 1 , Figure 3 , Figure 5As shown, a high-hardness zinc alloy structure includes a base plate 1. The four bottom corners of the base plate 1 are provided with third limiting grooves 102. The four bottom corners of the base plate 1 are provided with first connecting components 2 for easy assembly and disassembly of support wheels. A second connecting component 3 is provided on one side of the first connecting component 2. The first connecting component 2 includes a first connecting block 201 that is inserted into the third limiting groove 102. A first connecting ring 202 is fixedly connected to the bottom inner side of the first connecting block 201. The bottom of the first connecting ring 202 is provided with a first arc-shaped groove 203 centered on the center point of the first connecting ring 202. The bottom of the first connecting block 201 is provided with a first limiting groove 2010 centered on the center point of the first connecting ring 202.

[0042] The second connecting component 3 includes a second connecting block 301 that is inserted into the third limiting groove 102. A second connecting ring 302 is fixedly connected to the bottom inner side of the second connecting block 301. A second arc-shaped groove 303 is formed annularly around the center point of the second connecting ring 302 at the bottom. A second limiting groove 3010 is formed around the center point of the second connecting block 301 at the bottom. A vertical shaft 4 movably passes through the first limiting groove 2010 and the second limiting groove 3010. The outer peripheral surface of the vertical shaft 4 is flush with the first connecting block 301. 1 and the second connecting block 301 are attached together. The vertical shaft 4 is composed of two columns with different diameters. The bottom end of the vertical shaft 4 is fixedly connected to the top center position of the zinc alloy frame 6. The top center position of the zinc alloy frame 6 is provided with a third arc groove 601 with the same diameter as the first arc groove 203 and the second arc groove 303. The top of the third arc groove 601 is rotatably connected to a ball bearing 7. The ball bearing 7 is rotatably connected to the second arc groove 303 and the first arc groove 203. The top ends of the first connecting block 201 and the second connecting block 301 are both in contact with the bottom surface of the base plate 1.

[0043] When the entire structure is in operation, the base plate 1 serves as the basic load-bearing component, providing a support platform for the entire structure. The third limiting groove 102 provides installation positions for the first connecting block 201 and the second connecting block 301. The first connecting block 201 and the second connecting block 301 are rotatably connected to the vertical shaft 4. The vertical shaft 4 moves through the first limiting groove 2010 and the second limiting groove 3010, thereby ensuring the relative position stability of the first connecting component 2 and the second connecting component 3. The zinc alloy frame 6 is fixed at the bottom of the vertical shaft 4, forming a whole with the first connecting component 2 and the second connecting component 3. The third arc-shaped groove 601 at the top of the zinc alloy frame 6, the first arc-shaped groove 203 at the bottom of the first connecting ring 202, and the second arc-shaped groove 303 at the bottom of the second connecting ring 302 are rotatably connected by ball bearings 7. When the support wheel is subjected to external force, the ball bearings 7 roll in these three arc-shaped grooves, converting sliding friction into rolling friction, reducing the friction of the first connecting ring 202. The friction generated between the second connecting ring 302 and the zinc alloy frame 6 and the vertical shaft 4 improves the service life of the casters.

[0044] Reference Figures 3-5 As shown, the first connecting block 201 has multiple limiting holes 204 on the side near the first connecting ring 202. On one side of the first connecting block 201, and on the side near the limiting holes 204, rectangular holes 205 are symmetrically provided. On the side of the first connecting block 201 away from the rectangular holes 205, a rectangular groove 206 is provided. The rectangular groove 206 communicates with the two rectangular holes 205. On one side of the first connecting block 201, on the side near the rectangular groove 206, positioning grooves 2011 for fixing the first connecting block 201 are symmetrically provided.

[0045] The second connecting block 301 has symmetrically arranged connecting posts 304 on the side near the second connecting ring 302. The connecting posts 304 are inserted into the rectangular holes 205, and the outer surface of the connecting posts 304 is in contact with the first connecting block 201. A slot 3040 is opened below the end of one connecting post 304, and a slot 3040 is opened above the end of the other connecting post 304. A second limiting post 305 corresponding to the limiting hole 204 is fixedly installed on the side of the second connecting block 301 located on the connecting posts 304. The second limiting post 305 is inserted into the limiting hole 204, and the outer peripheral surface of the second limiting post 305 is in contact with the first connecting block 201. A circular opening in the middle is symmetrically fixedly installed inside the rectangular groove 206. A fixing plate 207 with a hole is provided. A first limiting post 208 is movably inserted through the hole. The end of the first limiting post 208 away from the fixing plate 207 is inserted into the slot 3040. A toggle block 209 with an arc-shaped end is fixedly connected to the end of the first limiting post 208. The toggle block 209 is slidably connected to the rectangular groove 206. A limiting ring 210 is fixedly inserted through the outer peripheral surface of the first limiting post 208. One side of the limiting ring 210 abuts against the connecting post 304. A first compression spring 211 is sleeved on the outer peripheral surface of the first limiting post 208. One end of the first compression spring 211 abuts against the fixing plate 207, and the other end of the first compression spring 211 abuts against the limiting ring 210.

[0046] When installing the first connecting block 201 and the second connecting block 301, the connecting posts 304 symmetrically arranged on the second connecting block 301 are inserted into the corresponding rectangular holes 205 on the first connecting block 201. At the same time, the second limiting post 305 is inserted into the limiting hole 204 on the first connecting block 201. This dual cooperation realizes the initial positioning and connection between the first connecting block 201 and the second connecting block 301, ensuring that their relative positions are accurate. After the connecting posts 304 and the second limiting post 305 have been initially inserted, the first limiting post 208, which moves through the fixing plate 207 inside the rectangular groove 206, moves towards the slot 3040 and is inserted into the slot 3040 under the elastic force of the first compression spring 211. Since the two connecting posts 304 have slots 3040 at their ends, the first limiting post 208 can be effectively engaged and fixed, thereby fixing the first connecting block 201 and the second connecting block 301 together. The limiting ring 210 abuts against the connecting post 304 under the action of the first compression spring 211, further enhancing the stability of the connection.

[0047] When it is necessary to disassemble the first connecting block 201 and the second connecting block 301, by pushing the actuating block 209, since the actuating block 209 is slidably connected to the rectangular groove 206, and the end of the actuating block 209 is arc-shaped to facilitate the application of force, the first limiting post 208 can overcome the elastic force of the first compression spring 211 and be pulled out from the slot 3040. After the first limiting post 208 is pulled out, the connecting post 304 and the second limiting post 305 lose the locking effect of the first limiting post 208. At this time, the connecting post 304 is pulled out from the rectangular hole 205, and the second limiting post 305 is pulled out from the limiting hole 204, thereby realizing the separation of the first connecting block 201 and the second connecting block 301.

[0048] Reference Figure 1 , Figure 6 , Figure 7 As shown, fixing components for fixing the first connecting component 2 and the second connecting component 3 are provided at the four corners of the base plate 1. A transverse groove 101 is formed on the outer peripheral surface of the base plate 1. The fixing components include a limiting plate 10, which is fixed in the transverse groove 101 on the side of the base plate 1. The side surface of the limiting plate 10 has symmetrically formed circular holes. The limiting plate 10 is located in the circular holes and a limiting rod 11 passes through it. One end of the limiting rod 11 is fixedly connected to an insert block 12. The insert block 12 is inserted into the fixing plate 207, and the side surface of the insert block 12 is in contact with the first connecting block 201. A second compression spring 13 is sleeved on the outer peripheral surface of the limiting rod 11, and one end of the second compression spring 13 abuts against the insert block 12. The other end of the second compression spring 13 abuts against the limiting plate 10. The end of the limiting rod 11 away from the insert block 12 is fixedly connected to a toggle plate 14 with an arc-shaped end. A pad 5 with a toothed groove on its outer peripheral surface movably passes through the outer peripheral surface of the vertical shaft 4. The top surface of the pad 5 is rotatably connected to the bottom of the first connecting ring 202 and the second connecting ring 302. The bottom surface of the pad 5 is rotatably connected to the top surface of the zinc alloy frame 6. Multiple balls 7 are arranged in a ring at equal intervals in the toothed groove on the outer peripheral surface of the pad 5. A circular hole is opened at the bottom end of the zinc alloy frame 6. A horizontal shaft 8 moves through the circular hole. The horizontal shaft 8 is fixedly connected to the zinc alloy frame 6 by bolts. A roller 9 moves through the horizontal shaft 8.

[0049] The first connecting assembly 2 and the second connecting assembly 3 are installed at the four corners of the base plate 1. By actuating the actuating plate 14 with its curved end, an external force is applied to the limiting rod 11, causing the limiting rod 11 to move away from the fixing plate 207 against the elastic force of the second compression spring 13. During this process, the second compression spring 13 is compressed, and its elastic potential energy increases. Then, the first connecting assembly 2 and the second connecting assembly 3 are placed at the predetermined positions at the four corners of the base plate 1, so that the fixing plate 207 is aligned with the insert block 12. When the position is accurate, the actuating plate 14 is released. At this time, the second compression spring 13 releases its elastic potential energy, pushing the limiting rod 11 to move towards the fixing plate 207, thereby driving the insert block 12 to be inserted into the fixing plate 207, thus firmly connecting the first connecting assembly 2 and the second connecting assembly 3 to the base plate 1, preventing displacement or loosening during subsequent use.

[0050] If it is necessary to disassemble the first connecting assembly 2 and the second connecting assembly 3, the operator pushes the toggle plate 14 again, and the limit rod 11 drives the insert block 12 to overcome the elastic force of the second compression spring 13 and pull it out from the fixing plate 207, thereby releasing the fixation of the first connecting assembly 2 and the second connecting assembly 3, so as to carry out the subsequent disassembly process.

[0051] It should be noted that the formula for calculating the spring force of a compression spring is F=kx, where F represents the spring force, represents the spring constant (the magnitude of the spring force generated by the spring under force per unit length), and x represents the spring compression (the displacement distance of the spring from its original state to its compressed state). The spring forces of the first compression spring 211 and the second compression spring 13 can be calculated using this formula.

[0052] The implementation principle of a high-hardness zinc alloy structure in this application embodiment is as follows: The base plate 1 serves as the foundation of the entire structure. The first connecting block 201 and the second connecting block 301 are inserted into the third limiting grooves 102 at the four corners of the base plate 1. This tight connection utilizes the characteristics of the high-hardness zinc alloy material to ensure the stability of the structure during initial assembly. The connecting post 304 and the second limiting post 305 of the second connecting block 301 are respectively inserted into the rectangular holes 205 and 204 of the first connecting block 201 to complete the initial positioning. The high-hardness zinc alloy material allows these connecting parts to withstand greater external forces without easily deforming, ensuring the accuracy and strength of the positioning. Subsequently, under the action of the first compression spring 211… The first limiting post 208 engages with the slot 3040 of the connecting post 304, thereby fixing the second connecting block 301 to the first connecting block 201. This fixing method fully utilizes the strength advantage of the high-hardness zinc alloy, making the connection more robust and durable. After installing the first connecting assembly 2 and the second connecting assembly 3 onto the base plate 1, push the actuating plate 14 to allow the limiting rod 11 to overcome the elastic force of the second compression spring 13. Then, release the actuating plate 14 to allow the insert 12 to insert into the positioning groove 2011, thus fixing the second connecting block 301 to the first connecting block 201 and the base plate 1. To disassemble, push the actuating plate 14 to disengage the insert 12 from the positioning groove 2011, allowing the first connecting assembly 2 to be disassembled. The connection between the second connecting component 3 and the base plate 1 effectively integrates the advantages of high-hardness zinc alloy into the connection system of the entire structure, enhancing the overall stability of the structure. By pushing the toggle block 209, the first limiting post 208 disengages from the slot 3040, thus separating the first connecting block 201 and the second connecting block 301. The characteristics of high-hardness zinc alloy enable these disassembly operations to be carried out smoothly without damaging the components, demonstrating the convenience of the structure in terms of maintenance and component replacement.

[0053] The first connecting block 201 and the second connecting block 301 are connected to the vertical shaft 4 through the first limiting groove 2010 and the second limiting groove 3010 at the bottom, allowing the first connecting block 201 and the second connecting block 301 to rotate around the vertical shaft 4. The zinc alloy frame 6 is fixed at the bottom of the vertical shaft 4. Due to its high hardness, the zinc alloy frame 6 provides support for the entire structure and forms an integral part with the first connecting component 2 and the second connecting component 3. When the support wheel is under force, the balls 7 in the first arc groove 203 and the second arc groove 303 at the top of the zinc alloy frame 6, the bottom of the first connecting ring 202, and the bottom of the second connecting ring 302 roll, changing sliding friction into rolling friction. The high hardness of the zinc alloy material allows these arc grooves and balls to maintain good surface quality during long-term friction, effectively reducing the friction between metal parts, thereby extending the service life of the caster and fully demonstrating the superior performance of this high-hardness zinc alloy structure.

[0054] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A high-hardness zinc alloy structure, characterized in that: Includes a base plate (1), with a first connecting component (2) at the bottom four corners of the base plate (1) for easy assembly and disassembly of the support wheel, a second connecting component (3) on one side of the first connecting component (2), and a fixing component at the four corners of the base plate (1) for fixing the first connecting component (2) and the second connecting component (3).

2. The high-hardness zinc alloy structure according to claim 1, characterized in that: The first connecting component (2) includes a first connecting block (201), a first connecting ring (202) is fixedly provided at the bottom of the first connecting block (201), a first arc-shaped groove (203) is circumferentially provided at the bottom of the first connecting ring (202), and a first limiting groove (2010) is provided at the center of the first arc-shaped groove (203) at the bottom of the first connecting block (201). The second connecting component (3) includes a second connecting block (301), a second connecting ring (302) is fixedly provided at the bottom of the second connecting block (301), and a first limiting groove (2010) is provided at the center of the first arc-shaped groove (203) at the bottom of the second connecting ring (302). A second arc-shaped groove (303) is provided. The bottom of the second connecting block (301) is provided with a second limiting groove (3010) located at the center of the second arc-shaped groove (303). A vertical shaft (4) is movably connected through the first limiting groove (2010) and the second limiting groove (3010). A zinc alloy frame (6) is fixedly connected to the bottom end of the vertical shaft (4). A third arc-shaped groove (601) is provided in a ring at the top of the zinc alloy frame (6). A ball bearing (7) is rotatably connected to the top of the third arc-shaped groove (601) and is rotatably connected to the second arc-shaped groove (303) and the first arc-shaped groove (203).

3. The high-hardness zinc alloy structure according to claim 2, characterized in that: The first connecting block (201) has a plurality of limiting holes (204) on one side, and rectangular holes (205) are symmetrically provided on the side of the first connecting block (201) near the limiting holes (204). A rectangular groove (206) communicating with the rectangular hole (205) is provided on the side of the first connecting block (201) away from the rectangular hole (205). A positioning groove (2011) is symmetrically provided on the side of the first connecting block (201) near the rectangular groove (206).

4. A high-hardness zinc alloy structure according to claim 2, characterized in that: The second connecting block (301) has symmetrical connecting posts (304) that are inserted into rectangular holes (205) on one side. The end of the connecting post (304) has a slot (3040). The second connecting block (301) has multiple second limiting posts (305) that are inserted into limiting holes (204) fixedly installed on one side.

5. A high-hardness zinc alloy structure according to claim 3, characterized in that: A fixing plate (207) is symmetrically fixedly installed inside the rectangular groove (206). A first limiting post (208) is movably inserted through the fixing plate (207) and inserted into the slot (3040). A toggle block (209) is fixedly connected to the end of the first limiting post (208) and slidably connected to the rectangular groove (206). A limiting ring (210) for abutting against the second connecting ring (302) is fixedly inserted through the outer peripheral surface of the first limiting post (208). A first compression spring (211) is sleeved on the outer peripheral surface of the first limiting post (208) for abutting against the fixing plate (207) and the limiting ring (210) at both ends.

6. A high-hardness zinc alloy structure according to claim 1, characterized in that: The fixing assembly includes a limiting plate (10) fixedly connected to the base plate (1). The limiting plate (10) is movably connected through a limiting rod (11). One end of the limiting rod (11) is fixedly connected to a plug (12) for insertion into the fixing plate (207). The outer peripheral surface of the limiting rod (11) is fitted with a second compression spring (13) with both ends abutting against the plug (12) and the limiting plate (10) respectively. The end of the limiting rod (11) away from the plug (12) is fixedly connected to a toggle plate (14).

7. A high-hardness zinc alloy structure according to claim 2, characterized in that: The outer peripheral surface of the vertical shaft (4) is movably penetrated by a gasket (5), and the outer peripheral surface of the gasket (5) is provided with a toothed groove. Multiple balls (7) are arranged in a ring at equal intervals in the toothed groove on the outer peripheral surface of the gasket (5).

8. A high-hardness zinc alloy structure according to claim 1, characterized in that: A transverse groove (101) is provided on the outer peripheral surface of the base plate (1), and a third limiting groove (102) is provided at the four bottom corners of the base plate (1) for inserting the first connecting block (201) and the second connecting block (301). The tops of the first connecting block (201) and the second connecting block (301) abut against the bottom surface of the base plate (1).

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