Caster mounting structure for trolley and trolley

Abstract

To provide a caster mounting structure for a dolly and a dolly. [Solution] The trolley includes a mounting base and a connector (4). The mounting base is rotatably connected to the caster (3). The trolley plate (1) of the trolley has a mounting groove that fits into the mounting base. The connector has a limit block protruding from its body. The connector passes through the trolley plate and the mounting base, and the limit block abuts against the mounting base. The structure is stable, easy to install and remove, and completely eliminates bolt connections, fundamentally eliminating the problem of rusted bolts making removal difficult. It is particularly suitable for humid and corrosive environments. The connector is located at the bottom of the recess, significantly improving the aesthetics of the trolley plate. During transport, the connector does not come into contact with the transported object, preventing interference. This overcomes the shortcomings of the prior art in terms of structural stability, ease of maintenance, and appearance design.

Description

[Technical Field]

[0001] The present invention belongs to the field of cart technology, and more particularly to a caster mounting structure for a cart and a cart. [Background technology]

[0002] Currently, the casters of bogies are typically fixed to the bottom of the bogie plate by welding or bolting. While welding ensures high structural strength and stability between the casters and the bogie plate, if the casters are damaged or require maintenance or replacement, the welded structure cannot be removed, making maintenance difficult and requiring the entire bogie plate to be replaced, significantly reducing the maintainability and service life of the device.

[0003] On the other hand, to facilitate easy installation and removal, some bogies use bolts to secure the casters to the bottom of the bogie plate. However, with this type of structure, each caster typically requires four sets of bolts to be secured, meaning that a conventional bogie with four casters requires 16 sets of bolts. These bolts penetrate the bogie plate from its top surface, leaving a large number of exposed metal bolt heads on the front of the bogie plate. This not only affects the cleanliness and aesthetics of the overall appearance, but is also prone to rust in humid and corrosive environments. If the bolts corrode, subsequent removal and replacement becomes extremely difficult, which actually undermines the convenient maintenance benefits that this structure was originally intended to provide. Summary of the Invention [Problem to be solved by the invention]

[0004] In order to address the various shortcomings of the prior art, such as structural stability, maintainability, and exterior design, a caster mounting structure for a cart and a cart are proposed. [Means for solving the problem]

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

[0006] According to a first aspect, the present invention provides a caster mounting structure for a trolley, comprising a mounting seat and a connector, the mounting seat is rotatably connected to the caster, the trolley plate of the trolley is provided with a mounting groove that is inserted into and engaged with the mounting seat, the connector is provided with a limit block protruding from its body, the connector passes through the trolley plate and the mounting seat in order, and the limit block abuts against the mounting seat.

[0007] The technical solution is further configured as follows: a pair of opposing groove walls of the mounting groove are provided with limit plates, which are parallel to and spaced apart from the bogie plate, and form a space for accommodating the mounting seat.

[0008] The technical solution is further configured as follows: another pair of the mounting grooves has groove openings on opposing groove walls;

[0009] The technical solution is further configured as follows: the limit plate is provided with a limit hole that matches the shape of the connector body; or 3.

[0010] The technical solution is further configured as follows: the top surface of the bogie plate is recessed to form a recess, the recess is provided corresponding to the mounting groove, and a first mounting hole is provided in the bottom surface of the recess, through which the connector body and the limit block pass.

[0011] The technical solution is further configured as follows: The top of the connector is flush with the bottom surface of the recess.

[0012] The technical solution is further configured as follows: The mounting seat is provided with a second mounting hole that fits the shape of the connector body.

[0013] According to a second aspect, the present invention provides a dolly including a dolly plate on which the caster mounting structure is provided.

[0014] The technical solution is further configured as follows: To realize the joining of a plurality of bogie plates, the edges of the bogie plates are provided with a concave-convex assembly that is inserted and engaged. [Effects of the Invention]

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. By providing mounting seats and mounting grooves, the mounting seats and casters can be inserted into the mounting grooves, and limit fixing is performed with connectors, making the structure stable and facilitating installation and removal maintenance. Bolt connections are completely eliminated, fundamentally eliminating the problem of difficult removal due to rusted bolts, and it is particularly suitable for humid and corrosive environments.

[0017] 2. The connector is located at the bottom of the recess, which greatly improves the aesthetics of the platform and prevents the connector from coming into contact with the transported object during transportation, thereby avoiding interference. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is an isometric view of a carriage according to an embodiment of the present invention; [Figure 2] 1 is a plan view of a carriage according to an embodiment of the present invention; [Figure 3] FIG. 2 is a bottom view of the carriage according to the embodiment of the present invention. [Figure 4] 3 is a cross-sectional view taken along the line AA in FIG. 2. [Figure 5] 1 is an assembly diagram of a connector and a mounting base according to an embodiment of the present invention; [Figure 6] 1 is a schematic diagram of a bogie plate according to an embodiment of the present invention; [Figure 7] FIG. 4 is a schematic diagram of part B in FIG. 3. [Figure 8] FIG. 5 is a schematic diagram of part C in FIG. 4. [Figure 9] FIG. 7 is a schematic diagram of part D in FIG. 6. DETAILED DESCRIPTION OF THE INVENTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, a clear and complete description of the technical solution of the present invention is provided below in conjunction with the drawings of the present invention, and any other similar embodiments obtained by those skilled in the art based on the embodiments of the present application without any creative work shall all fall within the scope of protection of the present application. In addition, the directional terms referred to in the following embodiments, such as "up", "down", "left", "right", etc., are merely directions referring to the drawings, and the directional terms used are intended to explain rather than limit the present invention.

[0020] The present invention will be further explained below with reference to the drawings and preferred embodiments.

[0021] Example 1: According to an embodiment of the present invention, a caster mounting structure for a carriage is provided. Referring to Figures 1 to 9, the caster mounting structure for a carriage includes a mounting base 8 and a connector 4, the mounting base 8 is rotatably connected to the caster 3, the carriage plate 1 of the carriage is provided with a mounting groove 9 that is inserted into and engaged with the mounting base 8, the connector 4 is provided with a limit block 402 protruding from its body, the connector 4 passes through the carriage plate 1 and the mounting base 8 in order, and the limit block 402 abuts against the mounting base 8.

[0022] Optionally, the caster 3 is rotatably mounted on the caster seat, the caster seat is connected to the mounting seat 8 via a connecting shaft, and a bearing is provided at the connection point between the connecting shaft and the mounting seat 8 to realize the rotatable connection.

[0023] Optionally, the mounting grooves 9 are located on the bottom surface of the bogie plate 1, and the mounting seats 8 are provided in one-to-one correspondence with the mounting grooves.

[0024] By adopting the above technical solution, compared to the conventional multiple bolt fixing, this solution allows installation and removal to be completed simply by inserting and removing the connector 4, greatly improving the efficiency of caster maintenance and replacement, completely eliminating the need for bolt connections and fundamentally eliminating the problem of difficult removal due to rusted bolts, and is particularly suitable for humid and corrosive environments. At the same time, the insertion and fitting of the mounting seat 8 and mounting groove 9 provides horizontal restriction, and the limit block 402 of the connector 4 provides vertical restriction, forming a stable three-dimensional fixation and ensuring the reliability of the caster 3 during load and movement.

[0025] In the caster mounting structure of the trolley of this embodiment, referring to Figures 1 to 9, limit plates 7 are provided on a pair of opposing groove walls of the mounting groove 9, and the limit plates 7 are arranged parallel to and spaced apart from the trolley plate 1, forming a space to accommodate the mounting seat 8.

[0026] Optionally, two limit plates 7 located on opposing groove walls are provided opposite each other, and a clearance space is left between them to accommodate the caster seat and the connecting shaft. As can be seen, in the height direction of the caster 3, the mounting seat 8 is bridged between the limit plates 7 and the bogie plate 1.

[0027] In the caster mounting structure for a dolly of this embodiment, referring to Figs. 1 to 9, groove openings are provided in the opposing groove walls of another set of the mounting grooves 9.

[0028] By adopting the above technical solution, the mounting seat 8 is inserted into the mounting groove 9 from the groove opening, and the limit plate 7 and the bogie plate 1 limit the mounting seat 8 in the vertical direction. The opposing sides of the groove opening limit the mounting seat 8 in the horizontal direction, which, combined with the vertical limit of the limit plate 7, prevents the mounting seat 8 from swinging within the mounting groove 9.

[0029] 1 to 9, in the caster mounting structure for the dolly of this embodiment, the limit plate 7 is provided with limit holes 10 that fit the shape of the connector main body 401. As can be seen, the limit holes 10 are engaged with the connector 4 to prevent the mounting seat 8 from slipping out of the mounting groove 9, and limit the mounting seat 8 in the horizontal direction.

[0030] Alternatively, the connector body 401 may be designed in a cylindrical shape, and the limit hole 10 may be designed in a circular hole or in an arc shape.

[0031] In the caster mounting structure of the trolley of this embodiment, referring to Figures 1 to 9, the top surface of the trolley plate 1 is recessed to form a recess 2, which is provided to correspond to the mounting groove 9, and a first mounting hole is provided in the bottom surface of the recess 2 for the connector body 401 and the limit block 402 to pass through.

[0032] Optionally, two limit blocks 402 are provided at intervals along the height direction of the connector body 401, the lower limit block being used to abut against the top of the mounting seat 8, and the upper limit block being positioned to seal a portion of the first mounting hole.

[0033] Alternatively, the connector body 401 may be designed as a cylinder, and the limit block 402 may be designed as a square. As can be seen, the first mounting hole may be designed as a non-circular hole, which prevents the connector 4 from rotating within the hole, achieving a true "locking" effect, preventing the connector 4 from loosening due to vibrations or other reasons, and further enhancing the reliability and stability of the connector.

[0034] In the caster mounting structure for the cart of this embodiment, with reference to FIGS. 1 to 9, the top of the connector 4 is flush with the bottom surface of the recess 2.

[0035] By adopting the above technical solution, the connector 4 is located on the bottom surface of the recess 2 and is completely hidden within the recess 2, which greatly improves the aesthetics of the carriage plate 1 and also prevents the connector from coming into contact with the transported object during transportation, thereby avoiding interference.

[0036] In the caster mounting structure for a dolly of this embodiment, referring to FIGS. 1 to 9, the mounting seat 8 is provided with a second mounting hole 11 that fits the shape of the connector main body 401.

[0037] Alternatively, a second mounting hole 11 is located at the edge of the mounting seat 8, and the same caster 3 is connected to the carriage plate 1 via two connectors 4 arranged in opposite directions.

[0038] Example 2: According to an embodiment of the present invention, a dolly is provided, which includes a dolly plate 1, and the dolly plate 1 is provided with the caster mounting structure.

[0039] During assembly, the mounting seat 8 is inserted into the mounting groove 9, and then the connector 4 is inserted from above the carriage plate 1. The connector 4 is passed through the carriage plate 1 and the mounting seat 8 in order until the limit block 402 abuts against the top surface of the mounting seat 8. Other connectors 4 are then attached to this mounting seat 8 in order, and the mounting seat 8 and caster 3 are assembled. Then, the other mounting seats 8 are attached in order.

[0040] In the bogie of this embodiment, referring to FIGS. 1 to 9, in order to realize the joining of a plurality of bogie plates 1, the edges of the bogie plates 1 are provided with concave-convex assemblies that are inserted and engaged.

[0041] Optionally, the concave-convex assembly includes a bump 5 and a groove 6 that are engaged with each other by a concave-convex engagement. The bump 5 protrudes from the carrier plate 1, and the bump 5 and the carrier plate 1 are in the same plane. A plurality of positioning claws are provided on the bottom surface of the bump 5. Correspondingly, the interior of the groove 6 is partitioned into a plurality of positioning grooves that fit with the positioning claws. By fitting the positioning claws into the positioning grooves, it is possible to ensure a strong connection between the carrier plates 1 after joining. Users can flexibly join multiple carrier plates as needed to expand the loading area and improve the practicality and application scenarios of the product.

[0042] The terms "first," "second," etc., used in the specification, claims, and drawings are used to distinguish between similar objects and are not intended to describe a particular order or priority. It should be understood that such terms are interchangeable where appropriate. This allows the embodiments of the present application described herein to be performed in an order other than that illustrated or described herein. Furthermore, the terms "comprise" and "have" and variations thereof are intended to be non-exclusive inclusive. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the explicitly recited steps or units, but may also include other steps or units that are not explicitly recited or that are inherent to the process, method, system, product, or apparatus.

[0043] Alternatively, specific examples of this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be further described here.

[0044] The example numbers in the present application are for illustrative purposes only and do not represent the superiority or inferiority of the examples.

[0045] In the above embodiments of the present application, emphasis is placed on the description of each embodiment, and some embodiments do not have detailed parts, and reference can be made to the relevant descriptions of other embodiments.

[0046] It should be pointed out that the above are only preferred embodiments of the present application, and some improvements and refinements can be made by those skilled in the art without departing from the principle of the present application, and these improvements and refinements should also be considered as the protection scope of the present application. [Explanation of symbols]

[0047] 1. Truck plate 2. Recess 3. Caster 4. Connector 401, connector body 402, Limit Block 5. Bump 6. Groove 7. Limit board 8. Mounting seat 9. Mounting groove 10. Limit hole 11. Second mounting hole.

Claims

1. 1. A caster mounting structure for a trolley, comprising: a mounting seat and a connector, the mounting seat being rotatably connected to the caster, the trolley plate of the trolley being provided with a mounting groove that is inserted into and engaged with the mounting seat, the connector being provided with a limit block that protrudes from its body, the connector passing through the trolley plate and the mounting seat in that order, and the limit block abutting against the mounting seat.

2. 2. The caster mounting structure for a trolley according to claim 1, wherein limit plates are provided on a pair of opposing groove walls of the mounting groove, the limit plates being parallel to and spaced apart from the trolley plate to form a space for accommodating the mounting seat.

3. 3. The caster mounting structure for a dolly according to claim 2, wherein the opposing groove walls of another set of said mounting grooves are provided with groove openings.

4. 4. The caster mounting structure for a dolly according to claim 2, wherein the limit plate is provided with a limit hole that fits the shape of the connector body.

5. The caster mounting structure for a trolley as described in claim 1, characterized in that the top surface of the trolley plate is recessed to form a recess, the recess is provided to correspond to the mounting groove, and a first mounting hole is provided in the bottom surface of the recess for the connector body and the limit block to pass through.

6. 6. The caster mounting structure for a dolly according to claim 5, wherein the top of the connector is flush with the bottom surface of the recess.

7. 7. The caster mounting structure for a dolly according to claim 5, wherein the mounting seat is provided with a second mounting hole that fits the shape of the connector body.

8. A dolly comprising a dolly plate provided with the caster mounting structure of claim 1.

9. 9. The bogie according to claim 8, wherein the edges of the bogie plates are provided with recess and protrusion assemblies that are interlocked and engaged to realize the joining of a plurality of bogie plates.

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