Light stable trundle

Abstract

The utility model relates to the technical field of trundles, in particular to a light stable trundle which comprises a stamping bottom plate and a large bead disc, an upper steel ball groove is formed in the lower end face of the stamping bottom plate in a stamping mode, a lower steel ball groove is formed in the upper end face of the large bead disc in a turning mode, and a plurality of sets of balls are movably clamped between the upper steel ball groove and the lower steel ball groove. A screw is movably inserted in the stamping bottom plate, an insertion opening is formed in the large bead disc, a bearing assembly is movably clamped in the insertion opening, the stamping bottom plate and the large bead disc are fixedly connected through the screw, and the bearing assembly is arranged on the peripheral end face of the screw in a sleeving mode. The device can be applied to light goods conveying scenes, the steel balls are clamped through the stamping bottom plate and the large ball disc to rotate, the wear-resisting effect of the device is improved, meanwhile, the bearing assembly is matched with the steel balls to rotate, wear is further reduced, and therefore the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of casters, in particular to a light and stable caster. Background Art

[0002] For existing casters, the bracket part generally consists of a concave bottom plate after stamping, plus steel balls and a large ball tray for wrapping the steel balls. A circle of grooves is formed by stamping below the large ball tray. Steel balls are placed on the grooves, and a small brake ball tray is covered. And the above components are riveted together by rivets to form the load-bearing and rotating bracket of the caster.

[0003] For example, a heavy-duty multi-functional caster bracket disclosed in Chinese Patent No. "CN203592858U" includes a bracket assembly and a brake assembly. The bracket assembly is composed of a bottom plate, steel balls, a large ball tray, a small brake ball tray, side plates, solid rivets and iron oil nozzles. The large ball tray and the side plates are welded. The bracket assembly has a double-ball track structure. The brake assembly is one of a metal side brake assembly, a nylon full brake assembly, a nylon top brake assembly, a metal double-foot full brake assembly and a metal double-foot top brake assembly, which is suitable for short-distance transportation of heavy equipment; wheels with different diameters and materials can be selected according to different use environments, and the maximum load-bearing capacity reaches 325KG; the brake module is convenient and practical, and a bracket can be assembled with five kinds of brake components. The product has flexible versatility and good safety in use.

[0004] Existing large ball trays are mostly thin stamping parts, with low hardness of their own materials, easy to wear after long-term use, and difficult to support large heavy loads after welding the caster side plates. And there is also a circle of grooves for placing steel balls on the bottom surface of the large ball tray, which cooperate with the small ball tray to form the lower brake ball tray, so that double-sided wear occurs and it is more likely to be damaged. Therefore, improvements are proposed. Content of the Utility Model

[0005] The purpose of the utility model is to solve the disadvantages of double-sided wear and easy damage of the large ball tray in the prior art, and to propose a light and stable caster.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] Design a light and stable caster, including a stamping bottom plate and a large ball tray. An upper steel ball groove is formed by stamping on the lower end surface of the stamping bottom plate. A lower steel ball groove is formed by turning on the upper end surface of the large ball tray. A plurality of groups of ball bearings are movably clamped between the upper steel ball groove and the lower steel ball groove. A screw is movably inserted into the interior of the stamping bottom plate. An insertion opening is formed in the interior of the large ball tray. A bearing assembly is movably clamped in the interior of the insertion opening. The stamping bottom plate and the large ball tray are fixedly connected by the screw, and the bearing assembly is sleeved on the outer peripheral end surface of the screw.

[0008] Preferably, the bearing assembly includes a vertical bearing sleeve, and a vertical bearing is rotatably connected inside the vertical bearing sleeve.

[0009] Preferably, two symmetrical side plates are fixedly connected to the lower end surface of the large bead plate, and a roller is rotatably connected between the two side plates through the cooperation of bolts.

[0010] Preferably, a brake disc is sleeved on the outer peripheral end surface of the screw, and the brake disc is arranged below the bearing assembly.

[0011] Preferably, an installation hole is formed inside the side plate, and a brake structure that cooperates with the brake disc is installed inside the installation hole.

[0012] Preferably, the brake disc includes an annular plate, and a plurality of groups of brake teeth are fixedly arranged on the circumference of the lower end surface of the annular plate.

[0013] Preferably, a clamping groove is formed inside the stamping bottom plate, a clamping block is fixedly connected to the outer peripheral end surface of the screw, and the clamping block is movably clamped inside the clamping groove.

[0014] A light and stable caster wheel proposed by the present utility model has the beneficial effects that: a thickened bottom plate is adopted and then formed into a stamping bottom plate with an upper steel bead groove through stamping. The large bead plate is made of high-strength steel and then formed into a lower steel bead groove through turning, and then quenched, so as to produce a high-strength and thickened large bead plate. At this time, steel beads can be fixed between the stamping bottom plate and the large bead plate, which facilitates the rotation of the stamping bottom plate and the large bead plate. Then, the bearing assembly is cooperatively sleeved in the insertion port. At this time, through the screw locking and fixing device, this device can be applied to lighter goods transportation scenarios, increasing the wear resistance of the device. At the same time, through the cooperation of the bearing assembly and its rotation, the wear is further reduced, thereby improving the service life of the device.

[0015] When the use scenario requires a braking function, a brake disc can be additionally fixed, and then the brake structure can be installed through the installation hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a light and stable caster wheel proposed by the present utility model;

[0017] Figure 2 is a matching diagram of the stamping bottom plate and the large bead plate of a light and stable caster wheel proposed by the present utility model;

[0018] Figure 3 is a schematic cross-sectional structural diagram of a light and stable caster wheel proposed by the present utility model;

[0019] Figure 4 is for a light and stable caster wheel proposed by the present utility model Figure 3Partial enlarged view at location A in [Chinese context];

[0020] Figure 5 Exploded structural schematic diagram of a lightweight and stable caster wheel proposed by the present utility model;

[0021] Figure 6 Of a lightweight and stable caster wheel proposed by the present utility model Figure 5 Partial enlarged view at location B in [Chinese context].

[0022] In the figure: 1, stamping bottom plate; 101, upper steel ball groove; 102, clamping groove; 2, large ball plate; 201, lower steel ball groove; 202, side plate; 203, insertion interface; 3, steel balls; 4, rollers; 5, vertical bearing sleeve; 6, vertical bearing; 7, brake disc; 8, screw; 801, clamping block. Specific implementation manner

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0024] Referring to Figures 1-6 , a lightweight and stable caster wheel includes a stamping bottom plate 1 and a large ball plate 2. An upper steel ball groove 101 is formed by stamping on the lower end surface of the stamping bottom plate 1, and a lower steel ball groove 201 is formed by turning on the upper end surface of the large ball plate 2. A plurality of groups of steel balls 3 are movably engaged between the upper steel ball groove 101 and the lower steel ball groove 201. A screw 8 is movably inserted into the stamping bottom plate 1. An insertion interface 203 is formed inside the large ball plate 2, and a bearing assembly is movably engaged inside the insertion interface 203. The stamping bottom plate 1 and the large ball plate 2 are fixedly connected by the screw 8. The bearing assembly is sleeved on the outer peripheral end surface of the screw 8. A thickened bottom plate is used and then stamped to form the stamping bottom plate 1 with the upper steel ball groove 101, while the large ball plate 2 is made of high-strength steel and then turned to form the lower steel ball groove 201, and then quenched to produce a high-strength and thickened large ball plate 2. A plurality of groups of steel balls 3 are fixed between the stamping bottom plate 1 and the large ball plate 2, facilitating the rotation of the stamping bottom plate 1 and the large ball plate 2. Then, the bearing assembly is fitted and sleeved in the insertion interface 203. At this time, the fixing device is locked by the screw 8. This device can be applied to relatively light cargo transportation scenarios, increasing the wear resistance of the device. At the same time, through the rotation of the bearing assembly and its cooperation, the wear is further reduced, thereby improving the service life of the device.

[0025] Referring to Figure 6 , in order to prevent the screw 8 from rotating inside the stamping bottom plate 1, a clamping groove 102 is formed inside the stamping bottom plate 1, and a clamping block 801 is fixedly connected to the outer peripheral end surface of the screw 8. The clamping block 801 is movably engaged inside the clamping groove 102, thereby improving the stability of the device.

[0026] Reference Figure 4 、 5 The bearing assembly includes a vertical bearing sleeve 5, and a vertical bearing 6 is rotatably connected inside the vertical bearing sleeve 5. When the stamping bottom plate 1 rotates with the large bead plate 2, the vertical bearing 6 also rotates inside the vertical bearing sleeve 5, further reducing friction.

[0027] Reference Figure 1 To fix the roller 4, two sets of symmetric side plates 202 are fixedly connected to the lower end surface of the large bead plate 2, and the roller 4 is rotatably connected between the two side plates 202 through the cooperation of bolts, which facilitates the installation and disassembly of the roller 4.

[0028] Reference Figure 4 When a braking function needs to be provided, a brake disc 7 can be sleeved on the outer peripheral end surface of the screw 8, and the brake disc 7 is arranged below the bearing assembly.

[0029] Reference Figures 1-5 To facilitate the braking of the casters, mounting holes are opened inside the side plates 202, and a braking structure that cooperates with the brake disc 7 is installed inside the mounting holes. The brake disc 7 includes an annular plate, and multiple groups of brake teeth are fixedly arranged on the circumference of the lower end surface of the annular plate. In this way, by stepping on the braking structure, it can be fixed to the brake teeth, thereby preventing the casters from moving.

[0030] Working mode: During operation, a thickened bottom plate is used. After stamping, a stamping bottom plate 1 with an upper steel bead groove 101 is formed. The large bead plate 2 is made of high-strength steel, and then through turning, a lower steel bead groove 201 is formed, and then quenched to produce a high-strength thickened large bead plate 2. The steel beads 3 are clamped and fixed between the stamping bottom plate 1 and the large bead plate 2, which facilitates the rotation of the stamping bottom plate 1 and the large bead plate 2. Then, the bearing assembly is fitted into the insertion port 203. At this time, the fixing device is locked by the screw 8. Finally, the roller 4 is fixed by bolts. The device is fixed to the flatbed cart through the slot holes provided on the stamping bottom plate 1. This device can be applied to lighter cargo transportation scenarios, increasing the wear resistance of the device. At the same time, through the rotation of the bearing assembly in cooperation with it, further wear is reduced, thereby improving the service life of the device. When the use scenario requires a braking function, the brake disc 7 can be additionally fixed, and then the braking structure is installed through the mounting holes, making it more convenient to use.

[0031] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A lightweight and stable caster, comprising a stamping bottom plate (1) and a large bead plate (2), characterized in that: The lower end surface of the stamping bottom plate (1) is stamped to form an upper steel ball groove (101). The upper end surface of the large ball plate (2) is turned to form a lower steel ball groove (201). A plurality of groups of steel balls (3) are movably engaged between the upper steel ball groove (101) and the lower steel ball groove (201). A screw (8) is movably inserted into the stamping bottom plate (1). An insertion port (203) is formed inside the large ball plate (2). A bearing assembly is movably engaged inside the insertion port (203). The stamping bottom plate (1) and the large ball plate (2) are fixedly connected by the screw (8). The bearing assembly is sleeved on the outer peripheral end surface of the screw (8).

2. The light and stable caster according to claim 1, wherein: The bearing assembly includes a vertical bearing sleeve (5). A vertical bearing (6) is rotatably connected inside the vertical bearing sleeve (5).

3. A light and stable caster according to claim 1, characterized in that: Two symmetrical side plates (202) are fixedly connected to the lower end surface of the large ball plate (2). A roller (4) is rotatably connected between the two side plates (202) by means of bolts.

4. The light and stable caster according to claim 3, characterized in that: A brake disc (7) is sleeved on the outer peripheral end surface of the screw (8). The brake disc (7) is arranged below the bearing assembly.

5. The light and stable caster according to claim 4, characterized in that: An installation hole is formed inside the side plate (202). A brake structure that cooperates with the brake disc (7) is installed inside the installation hole.

6. The light and stable caster according to claim 5, characterized in that: The brake disc (7) includes an annular piece. A plurality of groups of brake teeth are fixedly arranged on the circumference of the lower end surface of the annular piece.

7. A lightweight and stable caster according to claim 1, characterized in that: A positioning groove (102) is formed inside the stamping bottom plate (1). A positioning block (801) is fixedly connected to the outer peripheral end surface of the screw (8). The positioning block (801) is movably engaged inside the positioning groove (102).

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