Container caster and container

Abstract

The invention discloses a container trundle and a container, the container trundle comprises a supporting wheel part and a tapered end part, the supporting wheel part comprises a wheel and a support, and the support is arranged above the wheel; the lock head part is arranged above the support and comprises a lock body and a lock block, the lock block can rotate in the lock body, and the outer end of the lock block can stretch out of the lock body and retract into the lock body. According to the container trundle, the lock head part is arranged in the container trundle, and when the lock head part is inserted into the bottom corner piece of the container, the lock block can be automatically locked with the bottom corner piece, so that the container trundle is quickly connected with the bottom corner piece, the operation of a worker is facilitated, the labor intensity is reduced, and unsafe operation is eliminated.

Description

Technical Field

[0001] The present invention generally relates to the technical field of cargo boxes and containers, and more particularly to a box caster and a container. Background Art

[0002] Containers can be loaded with packaged or unpackaged goods for sea, land and air transportation. Container transportation is an important mode of transportation in the process of multimodal transportation of international trade goods. The goods in the container do not need to be moved during transshipment. The container can be quickly loaded and unloaded as a transport unit, which is convenient for loading and unloading with mechanical equipment and can be reused for a long time. Freight transportation through containers can greatly improve transportation efficiency and reduce transportation costs.

[0003] Container casters are the most commonly used container mobile conveying tools in container production. Container casters need to follow containers to frequently enter and exit sandblasting rooms, paint rooms and other places with great environmental pollution. Therefore, container casters are required to be strong, durable, and anti-fall and anti-collision. In production and use, the general installation process of container casters is: use a lifting platform to lift the container as a whole, and then four people at the four corners will insert the container casters into the lower corner pieces. In order to prevent the container casters from falling off during walking, anti-drop pins must be inserted. Workers must hold the more than ten kilograms of container casters tightly in the corner pieces with one hand, and quickly insert the anti-drop pins with the other hand, so workers often get their hands pinched. The anti-drop pins of container casters are easy to fall off during movement. If the walking track is deformed or the ground is uneven, the container casters will fall off. At least the container casters need to be reinstalled, which affects the production rhythm of the entire line. In severe cases, the container will derail, causing damage to production equipment or personnel.

[0004] Therefore, it is necessary to provide a container caster and a container to at least partially solve the above problems. Summary of the invention

[0005] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0006] In order to at least partially solve the above problems, a first aspect of the present invention provides a box caster, comprising:

[0007] A supporting wheel portion, the supporting wheel portion comprising a wheel and a bracket, the bracket being arranged above the wheel;

[0008] The lock part is arranged above the bracket, and the lock part comprises a lock body and a lock block. The lock block can rotate in the lock body, and the outer end of the lock block can extend from and be retracted into the lock body.

[0009] Optionally, a rotation cavity is provided inside the lock body, the locking block is arranged in the rotation cavity, a through hole is provided on the side wall of the rotation cavity, and the outer end of the locking block can extend out and be retracted from the through hole.

[0010] Optionally, both ends of the locking block are rotationally symmetrical structures, and both ends of the locking block can be extended from and retracted from the through hole.

[0011] Optionally, the end of the locking block is wedge-shaped and is provided with a slope with a gradually shrinking top. When the locking head is inserted into the bottom corner piece of the container, the bottom corner piece is pressed against the slope, so that the locking block rotates in the rotating cavity along the first direction and gradually retracts into the lock body.

[0012] Optionally, the locking portion further includes:

[0013] A rotating shaft, wherein the rotating shaft is arranged in the lock body, the axial direction of the rotating shaft is perpendicular to the rotation plane of the locking block, the locking block is sleeved on the rotating shaft, and the locking block and the rotating shaft can rotate synchronously in the lock body;

[0014] A torsion spring is sleeved on the rotating shaft and is located below the locking block. The first end of the torsion spring is connected to the rotating shaft, and the second end of the torsion spring abuts against the lock body. When the locking block drives the rotating shaft to rotate in a first direction, the torsion spring is twisted to undergo elastic deformation.

[0015] Optionally, when the locking block is not affected by external force, the torsion spring drives the rotating shaft to rotate in the second direction, and the rotating shaft drives the locking block to rotate in the second direction. Both ends of the locking block gradually extend from the through hole, and the locking block stops rotating when it rotates until it abuts against the side wall of the rotating chamber.

[0016] Optionally, a accommodating cavity is provided at the lower portion of the lock body, the accommodating cavity is located below the rotating cavity, the rotating shaft passes through the accommodating cavity, and the torsion spring is arranged in the accommodating cavity.

[0017] Optionally, a first support plate is provided between the rotating chamber and the accommodating chamber, the first support plate is provided with a first axial hole, the rotating shaft passes through the first axial hole, and a second washer is provided in the first axial hole to support the rotating shaft and the locking block.

[0018] Optionally, a first washer is disposed at the lower end of the rotating shaft to support the torsion spring, and a third washer is disposed at the upper end of the rotating shaft to support the locking block.

[0019] Optionally, the locking portion further includes:

[0020] A rotating shaft, wherein the rotating shaft is arranged in the lock body, the axial direction of the rotating shaft is perpendicular to the rotation plane of the locking block, the locking block is sleeved on the rotating shaft, and the locking block and the rotating shaft can rotate synchronously in the lock body;

[0021] A compression spring sheet, the compression spring sheet is connected to the rotating shaft and is located above the locking block, and the compression spring sheet and the rotating shaft can rotate synchronously in the lock body;

[0022] A compression spring, wherein the first end of the compression spring abuts against the compression spring sheet, and the second end of the compression spring abuts against the lock body, and when the lock block drives the rotating shaft to rotate along the first direction, the compression spring sheet squeezes the compression spring to elastically deform.

[0023] Optionally, when the locking block is not affected by external force, the compression spring drives the compression spring sheet to drive the rotating shaft to rotate in the second direction, and the rotating shaft drives the locking block to rotate in the second direction. Both ends of the locking block gradually extend from the through hole, and the locking block stops rotating when it rotates until it abuts against the side wall of the rotating chamber.

[0024] Optionally, an accommodating cavity is provided at the upper portion of the lock body, the accommodating cavity is located above the rotating cavity, the rotating shaft passes through the accommodating cavity, and the compression spring and the compression spring sheet are arranged in the accommodating cavity.

[0025] Optionally, a second support plate is provided between the rotating chamber and the accommodating chamber, the second support plate is provided with a second axial hole, the rotating shaft passes through the second axial hole, and a fourth washer is provided in the second axial hole to support the rotating shaft.

[0026] Optionally, the locking portion further includes:

[0027] A cover plate is sealed on the upper end of the accommodating cavity.

[0028] Optionally, the locking block is connected to the rotating shaft via a key.

[0029] Optionally, the shape of the lock body is adapted to the shape of the bottom connecting hole of the bottom corner piece of the container.

[0030] Optionally, the lock body is fixed to the top of the bracket by welding, or fixed by bolts.

[0031] A second aspect of the present invention provides a container, comprising: a container caster according to any one of the above technical solutions;

[0032] A bottom corner piece, the box caster is connected to the bottom corner piece, the locking head can be inserted into the bottom corner piece, and the locking block can be automatically locked with the bottom corner piece.

[0033] According to a box caster and a container of the present invention, the box caster is provided with a locking portion, and when the locking portion is inserted into the bottom corner piece of the container, the locking block can be automatically locked with the bottom corner piece, so that the box caster is inserted and locked, thereby realizing a quick connection between the box caster and the bottom corner piece, which is convenient for the staff to operate. The staff can hold the box caster with both hands and insert it into the bottom corner piece of the container, which will automatically lock it, eliminating the action of inserting the anti-drop pin, reducing labor intensity, eliminating unsafe operations such as the staff supporting the wheel with one hand, and can also effectively prevent the box caster from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The embodiments of the present invention and their description are shown in the drawings to explain the principles of the present invention. In the drawings,

[0035] Figure 1 A front view of a box caster according to a preferred embodiment of the present invention;

[0036] Figure 2 A left side view of a box caster according to a preferred embodiment of the present invention;

[0037] Figure 3 A perspective view of a container according to a preferred embodiment of the present invention;

[0038] Figure 4 A cross-sectional view of a lock portion according to a preferred embodiment of the present invention;

[0039] Figure 5 for Figure 4 Sectional view along AA;

[0040] Figure 6 A cross-sectional view of a lock portion according to a preferred embodiment of the present invention;

[0041] Figure 7 for Figure 6 Cross-sectional view along BB.

[0042] Description of reference numerals:

[0043] 100: Support wheel 101: Wheel

[0044] 102: Axle 103: Bracket

[0045] 104: Bolt 200: Lock head

[0046] 201: Lock body 202: Lock block

[0047] 221: Slope 203: Axis

[0048] 204: Torsion spring 205: Key

[0049] 206: First washer 207: Second washer

[0050] 208: third gasket 209: first support plate

[0051] 210: Rotation chamber 211: Side wall

[0052] 212: connection hole 213: receiving cavity

[0053] 214: Compression spring 215: Compression spring

[0054] 216: Cover plate 217: Fourth gasket

[0055] 218: Second support plate 300: Container

[0056] 301: bottom frame 302: bottom corner piece DETAILED DESCRIPTION

[0057] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0058] In order to fully understand the present invention, a detailed description will be provided in the following description. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0059] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifications and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of the "second component", and the term "second component" itself does not imply the existence of the "first component".

[0060] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and similar expressions used in the present invention are for illustrative purposes only and are not limiting.

[0061] The invention discloses a container caster and a container.

[0062] Now, exemplary embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.

[0063] like Figure 1 , Figure 2 As shown, in a preferred embodiment, a box caster includes: a supporting wheel portion 100 and a locking portion 200;

[0064] The supporting wheel part 100 includes a wheel 101 and a bracket 103, wherein the bracket 103 is arranged above the wheel 101; the bracket 103 is an inverted U-shaped structure as a whole, and a wheel axle 102 is arranged in the middle of the wheel 101, and the lower end of the bracket 103 is mounted on the wheel axle 102 to obtain support from the wheel axle 102. The wheel 101 can be a metal wheel or a rubber wheel, and a bearing is arranged in the middle to enable flexible rotation;

[0065] The lock part 200 is arranged above the bracket 103, and the lock part 200 includes a lock body 201 and a lock block 202. The lock block 202 can rotate in the lock body 201, and the outer end of the lock block 202 can extend from the lock body 201 and retract into the lock body 201. The lock body 201 and the lock block 202 can be made of metal material, such as steel.

[0066] like Figure 3 As shown, the container 300 includes a bottom corner piece 302, and the bottom and sides of the bottom corner piece 302 are provided with connecting holes. The box casters are connected to the bottom corner piece 302 of the container 300, and the locking head 200 can be inserted into the bottom corner piece 302 from the bottom connecting hole of the bottom corner piece 302. The locking block 202 can be locked with the side connecting hole of the bottom corner piece 302, and the locking head 200 can be automatically locked in the bottom corner piece 302.

[0067] Before the lock head portion 200 is inserted into the bottom corner piece 302, the outer end of the lock block 202 can extend from the lock body 201 and always remain in this state; during the process of the lock head portion 200 being inserted into the bottom corner piece 302, the outer end of the lock block 202 can be retracted into the lock body 201, and after the lock head portion 200 is inserted into the bottom corner piece 302, the outer end of the lock block 202 can again extend from the lock body 201, lock with the side connecting hole of the bottom corner piece 302, and always remain in this state.

[0068] The box caster in this embodiment, when the locking head is inserted into the bottom corner piece of the container, the locking block can automatically lock with the bottom corner piece, so that the box caster is locked as soon as it is inserted, thereby realizing a quick connection between the box caster and the bottom corner piece, which is convenient for the staff to operate. The staff can hold the box caster with both hands and insert it into the bottom corner piece of the container, which will automatically lock it, eliminating the action of inserting the anti-drop pin, reducing labor intensity, eliminating unsafe operations such as the staff supporting the wheel with one hand, and can also effectively prevent the box caster from falling off.

[0069] In one embodiment, if Figure 4 , Figure 5As shown, a rotation cavity 210 is provided inside the lock body 201, and a locking block 202 is disposed in the rotation cavity 210. A through hole is provided on a side wall 211 of the rotation cavity 210, and the outer end of the locking block 202 can extend out and be retracted from the through hole.

[0070] The height of the locking block 202 is smaller than the height of the rotating cavity 210, so that it can rotate smoothly in the rotating cavity 210. The outer end of the locking block 202 extends from the through hole to a proper length beyond the outer side of the lock body 201, so that it can extend into the side connection hole of the bottom corner piece 302 and be locked with the side connection hole of the bottom corner piece 302.

[0071] In one embodiment, if Figure 5 As shown, the two ends of the locking block 202 are 180-degree rotationally symmetrical structures, and both ends of the locking block 202 can be extended and retracted from the through holes of the side wall 211. The side wall 211 needs to be provided with two through holes. Both ends of the locking block 202 can be locked with the side connection holes of the bottom corner piece 302, which can improve the firmness of the locking of the box caster with the bottom corner piece 302 and effectively prevent it from loosening from the bottom corner piece 302.

[0072] In one embodiment, if Figure 1 , Figure 5 As shown, the end of the lock block 202 is wedge-shaped and is provided with a slope 221 with a gradually shrinking top. When the lock head 200 is inserted into the bottom corner piece 302 of the container, the bottom corner piece 302 presses against the slope 221, so that the lock block 202 rotates in the first direction in the rotation cavity 210 and gradually retracts into the lock body 201. In the figure, the first direction is clockwise, and the lock head 200 is inserted upward into the bottom corner piece 302 of the container, and the bottom corner piece 302 can press down the lock block 202. By providing the slope 221, the bottom corner piece 302 can force the lock block 202 to rotate in the clockwise direction and gradually retract into the lock body 201.

[0073] In one embodiment, if Figure 4 , Figure 5 As shown, the lock head 200 also includes:

[0074] The rotating shaft 203 is disposed in the lock body 201. The axial direction of the rotating shaft 203 is perpendicular to the rotation plane of the locking block 202. The locking block 202 is sleeved on the rotating shaft 203. The locking block 202 and the rotating shaft 203 can rotate synchronously in the lock body 201. The locking block 202 can drive the rotating shaft 203 to rotate, and the rotating shaft 203 can also drive the locking block 202 to rotate.

[0075] The torsion spring 204 is sleeved on the rotating shaft 203 and is located below the locking block 202. The first end of the torsion spring 204 is connected to the rotating shaft 203, and the second end of the torsion spring 204 abuts against the lock body 201. When the locking block 202 drives the rotating shaft 203 to rotate along the first direction, the torsion spring 204 is twisted to undergo elastic deformation, specifically, the torsion spring 204 is tightened to generate elastic potential energy. When the locking block 202 can be extended outward, the elastic potential energy of the torsion spring 204 can be used to automatically restore the locking block 202 to extend outward.

[0076] In one embodiment, if Figure 4 , Figure 5 As shown, when the locking block 202 is not affected by external force, the torsion spring 204 drives the rotating shaft 203 to rotate in the second direction, and the rotating shaft 203 drives the locking block 202 to rotate in the second direction. The two ends of the locking block 202 gradually extend from the through hole, and the locking block 202 stops rotating when it rotates to abut against the side wall 211 of the rotating chamber 210. The second direction in the figure is counterclockwise. Because the torsion spring 204 has accumulated elastic potential energy, when there is no external force to prevent the locking block 202 and the rotating shaft 203 from rotating, the torsion spring 204 can drive the rotating shaft 203 and the locking block 202 to rotate in the counterclockwise direction until the locking block 202 stops rotating when it rotates to abut against the side wall 211 of the rotating chamber 210, and the locking block 202 is automatically reset. After the lock head 200 is inserted into the bottom angle piece 302, the locking block 202 is automatically reset, and it can be locked with the side connecting hole of the bottom angle piece 302.

[0077] In one embodiment, if Figure 4 As shown, the lower part of the lock body 201 is provided with a receiving chamber 213, the receiving chamber 213 is located below the rotating chamber 210, the rotating shaft 203 is passed through the receiving chamber 213, and the torsion spring 204 is arranged in the receiving chamber 213. After the lock part 200 is arranged on the top of the bracket 103, the bottom of the receiving chamber 213 will be closed. Because the container 300 needs to enter the sandblasting room, paint room and other places with great environmental pollution, in order to prevent the force spring of the self-locking mechanism from being contaminated, the torsion spring 204 is placed in a separate space, which can isolate the harsh environment such as sandblasting and painting, ensure the performance of the lock part 200, and extend the service life.

[0078] In one embodiment, if Figure 4 As shown, a first support plate 209 is provided between the rotating chamber 210 and the accommodating chamber 213, and the first support plate 209 is provided with a first shaft hole, and the rotating shaft 203 is passed through the first shaft hole, and a second washer 207 is provided in the first shaft hole to support the rotating shaft 203 and the locking block 202. The first support plate 209 closes the accommodating chamber 213 from the top to isolate it from the harsh environment such as sandblasting and painting. The second washer 207 is a T-shaped structure, and the second washer 207 also plays the role of closing the first shaft hole to prevent debris from entering the accommodating chamber 213.

[0079] In one embodiment, if Figure 4 As shown, a first washer 206 is disposed at the lower end of the rotating shaft 203 to support the torsion spring 204 , and a third washer 208 is disposed at the upper end of the rotating shaft 203 to support the locking block 202 .

[0080] The first washer 206 can prevent the torsion spring 204 from rubbing against the top of the bracket 103, and the third washer 208 can prevent the top of the lock block 202 from rubbing against the lock body 201. The first washer 206, the second washer 207, and the third washer 208 can all be made of plastic or nylon.

[0081] Figure 6 , Figure 7 The embodiment shown and Figure 4 , Figure 5 The following is a detailed introduction.

[0082] In one embodiment, if Figure 6 , Figure 7 As shown, the lock head 200 also includes:

[0083] The rotating shaft 203 is disposed in the lock body 201. The axial direction of the rotating shaft 203 is perpendicular to the rotation plane of the locking block 202. The locking block 202 is sleeved on the rotating shaft 203. The locking block 202 and the rotating shaft 203 can rotate synchronously in the lock body 201. The locking block 202 can drive the rotating shaft 203 to rotate, and the rotating shaft 203 can also drive the locking block 202 to rotate.

[0084] A compression spring 215, which is connected to the rotating shaft 203 and is located above the lock block 202. The compression spring 215 and the rotating shaft 203 can rotate synchronously in the lock body 201; the compression spring 215 can drive the rotating shaft 203 to rotate, and the rotating shaft 203 can also drive the compression spring 215 to rotate; a radial slot can be provided at the top of the rotating shaft 203, and the compression spring 215 is provided in the slot;

[0085] Compression spring 214, the first end of the compression spring 214 abuts against the compression spring sheet 215, and the second end of the compression spring 214 abuts against the lock body 201. When the lock block 202 drives the rotating shaft 203 to rotate along the first direction, the compression spring sheet 215 squeezes the compression spring 214 for elastic deformation, specifically squeezing the compression spring 214 to generate elastic potential energy. When the lock block 202 can extend outward, the elastic potential energy of the compression spring 214 can be used to automatically restore the lock block 202 to extend outward.

[0086] Figure 6 The length of the rotating shaft 203 may be less than Figure 4 The rotating shaft 203 in the. Figure 6 Two compression springs 214 can be provided in the lock head portion 200, distributed on both sides of the compression spring sheet 215, to ensure that sufficient elastic force is provided.

[0087] In one embodiment, if Figure 6 , Figure 7 As shown, when the lock block 202 is not affected by external force, the compression spring 214 drives the compression spring sheet 215 to drive the rotating shaft 203 to rotate along the second direction, and the rotating shaft 203 drives the lock block 202 to rotate along the second direction. The two ends of the lock block 202 gradually extend from the through hole, and the lock block 202 stops rotating when it rotates to abut against the side wall 211 of the rotating chamber 210. The second direction in the figure is counterclockwise. Because the compression spring 214 has accumulated elastic potential energy, when there is no external force to prevent the lock block 202 and the rotating shaft 203 from rotating, the compression spring 214 can drive the rotating shaft 203 and the lock block 202 to rotate in the counterclockwise direction until the lock block 202 rotates to abut against the side wall 211 of the rotating chamber 210 and stops rotating, and the lock block 202 is automatically reset. After the lock head 200 is inserted into the bottom angle piece 302, the lock block 202 is automatically reset, and it can be locked with the side connecting hole of the bottom angle piece 302.

[0088] In one embodiment, if Figure 6 , Figure 7 As shown, the upper part of the lock body 201 is provided with a receiving chamber 213, the receiving chamber 213 is located above the rotating chamber 210, the rotating shaft 203 is passed through the receiving chamber 213, and the compression spring 214 and the compression spring sheet 215 are arranged in the receiving chamber 213. Because the container 300 needs to enter the sandblasting room, paint room and other places with great environmental pollution, in order to prevent the force spring of the self-locking mechanism from being contaminated, the compression spring 214 and the compression spring sheet 215 are placed in a separate space, which can isolate the harsh environment such as sandblasting and painting, ensure the performance of the lock head 200, and extend the service life.

[0089] In one embodiment, if Figure 6 As shown, a second support plate 218 is provided between the rotating chamber 210 and the accommodating chamber 213, and the second support plate 218 is provided with a second shaft hole, and the rotating shaft 203 is passed through the second shaft hole, and a fourth gasket 217 is provided in the second shaft hole to support the rotating shaft 203. The second support plate 218 closes the accommodating chamber 213 from the bottom to isolate it from the harsh environment such as sandblasting and painting. The fourth gasket 217 is an inverted T-shaped structure, and the fourth gasket 217 also plays the role of closing the second shaft hole to prevent debris from entering the accommodating chamber 213.

[0090] like Figure 6 As shown, a first support plate 209 is disposed below the rotating chamber 210, and the first support plate 209 is provided with a first shaft hole, the rotating shaft 203 is passed through the first shaft hole, and a second washer 207 is disposed in the first shaft hole to support the rotating shaft 203 and the locking block 202. The second washer 207 is a T-shaped structure.

[0091] In one embodiment, if Figure 6 As shown, the lock head 200 also includes:

[0092] The cover plate 216 is sealed at the upper end of the accommodating cavity 213. The cover plate 216 and the upper end of the accommodating cavity 213 can be threadedly connected to isolate the harsh environment such as sandblasting and painting, ensure the performance of the lock part 200, and extend the service life.

[0093] In one embodiment, if Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the locking block 202 and the rotating shaft 203 are connected by a key, which can ensure that the locking block 202 and the rotating shaft 203 rotate synchronously. Either a flat key or a spline can be used.

[0094] In one embodiment, if Figure 5 , Figure 7 As shown, the shape of the lock body 201 is adapted to the shape of the bottom connection hole of the bottom corner piece 302 of the container. The cross-sectional shape of the lock body 201 in the figure is a combination of a middle rectangle and two ends of semicircular, adapted to the bottom connection hole of the bottom corner piece 302, and can be smoothly inserted into the connection hole.

[0095] In one embodiment, if Figure 1 , Figure 2 As shown, the lock body 201 is fixed to the top of the bracket 103 by welding or bolting to ensure a firm connection. In the figure, the lock body 201 is fixed to the top of the bracket 103 by two bolts 104, and a connection hole 212 is correspondingly provided at the bottom of the lock body 201.

[0096] like Figure 3 As shown, an embodiment of the present invention further provides a container 300, comprising: the container caster of any one of the above embodiments;

[0097] The bottom corner piece 302 , the box caster is connected to the bottom corner piece 302 , the locking head 200 can be inserted into the bottom corner piece 302 , and the locking block 202 can be automatically locked with the bottom corner piece 302 .

[0098] The bottom frame 301 of the container 300 is usually provided with four bottom corner pieces 302, and four container casters need to be combined to support the movement of the container 300.

[0099] If it is necessary to remove the container casters from the bottom corner fitting 302, first use a lifting platform to lift the container 300 as a whole, then use a tool to insert into the side connecting hole of the bottom corner fitting 302 to push the locking block 202, forcing the locking block 202 to rotate clockwise until the locking block 202 is retracted into the lock body 201, and the lock between the locking block 202 and the bottom corner fitting 302 can be released. The container casters will automatically detach from the bottom corner fitting 302 under the action of gravity, and the removal can be completed.

[0100] Other structures of the container 300 may refer to the prior art, such as corner columns, top corner fittings, side walls, end plates, doors, etc., and will not be described in detail here.

[0101] According to the box caster and container of the present invention, the box caster is provided with a locking portion, and when the locking portion is inserted into the bottom corner piece of the container, the locking block can be automatically locked with the bottom corner piece, so that the box caster is inserted and locked, thereby realizing quick connection between the box caster and the bottom corner piece, which is convenient for the staff to operate. The staff can hold the box caster with both hands and insert it into the bottom corner piece of the container, which will automatically lock it, eliminating the action of inserting the anti-drop pin, reducing labor intensity, eliminating unsafe operations such as the staff supporting the wheel with one hand, and can also effectively prevent the box caster from falling off.

[0102] The processes and steps described in all the above preferred embodiments are only examples. Unless adverse effects occur, various processing operations can be performed in a sequence different from the sequence of the above processes. The sequence of steps in the above processes can also be increased, merged or deleted according to actual needs.

[0103] In understanding the scope of the present invention, the term "comprise" and its derivatives as used herein are intended to be open terms, which specify the existence of recorded features, elements, components, groups, wholes and / or steps, but do not exclude the existence of other unrecorded features, elements, components, groups, wholes and / or steps. This concept also applies to words with similar meanings, such as the terms "include", "have" and their derivatives.

[0104] The terms "attached" or "attached" as used herein include: a configuration where an element is directly secured to another element by directly securing the element to the other element; a configuration where an element is indirectly secured to another element by securing the element to an intermediate member which in turn is secured to the other element; and a configuration where one element is integral with the other element, i.e., one element is substantially a part of the other element. This definition also applies to words with similar meanings such as "connect," "connect," "couple," "mount," "bond," "fix," and their derivatives. Finally, terms of degree such as "substantially," "approximately," and "approximately" as used herein represent the amount of deviation that modifies the term such that the end result will not be significantly changed.

[0105] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. The features described herein in one embodiment may be applied to another embodiment individually or in combination with other features, unless the feature is not applicable or otherwise specified in the other embodiment.

[0106] The present invention has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the present invention to the described embodiments. In addition, it can be understood by those skilled in the art that the present invention is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of the protection claimed by the present invention.

Claims

1. A box caster, characterized in that: include: A supporting wheel portion (100), the supporting wheel portion (100) comprising a wheel (101) and a bracket (103), the bracket (103) being arranged above the wheel (101); A lock portion (200), the lock portion (200) being arranged above the bracket (103), the lock portion (200) comprising a lock body (201) and a lock block (202), the lock block (202) being capable of rotating in the lock body (201), and the outer end of the lock block (202) being capable of extending from the lock body (201) and being retracted into the lock body (201).

2. The box caster according to claim 1, characterized in that: The lock body (201) is provided with a rotating cavity (210) inside, the locking block (202) is arranged in the rotating cavity (210), the side wall (211) of the rotating cavity (210) is provided with a through hole, and the outer end of the locking block (202) can extend out and be retracted from the through hole.

3. The box caster according to claim 2, characterized in that: The two ends of the locking block (202) are 180-degree rotationally symmetrical structures, and both ends of the locking block (202) can be extended from and retracted into the through hole.

4. The box caster according to claim 2, characterized in that: The end of the locking block (202) is wedge-shaped and is provided with a slope (221) with a gradually shrinking top. When the locking head (200) is inserted into the bottom corner piece (302) of the container, the bottom corner piece (302) presses against the slope (221), so that the locking block (202) rotates in the rotating cavity (210) along a first direction and gradually retracts into the lock body (201).

5. The box caster according to claim 2, characterized in that: The locking part (200) further comprises: A rotating shaft (203), the rotating shaft (203) being arranged in the lock body (201), the axial direction of the rotating shaft (203) being perpendicular to the rotation plane of the locking block (202), the locking block (202) being sleeved on the rotating shaft (203), and the locking block (202) and the rotating shaft (203) being capable of synchronously rotating in the lock body (201); A torsion spring (204), wherein the torsion spring (204) is sleeved on the rotating shaft (203) and is located below the locking block (202); a first end of the torsion spring (204) is connected to the rotating shaft (203), and a second end of the torsion spring (204) is in contact with the lock body (201); when the locking block (202) drives the rotating shaft (203) to rotate in a first direction, the torsion spring (204) is twisted to undergo elastic deformation.

6. The box caster according to claim 5, characterized in that: When the locking block (202) is not affected by external force, the torsion spring (204) drives the rotating shaft (203) to rotate along the second direction, and the rotating shaft (203) drives the locking block (202) to rotate along the second direction. The two ends of the locking block (202) gradually extend out of the through hole, and the locking block (202) stops rotating when it rotates to abut against the side wall (211) of the rotating chamber (210).

7. The box caster according to claim 5, characterized in that: The lower part of the lock body (201) is provided with a receiving chamber (213), the receiving chamber (213) is located below the rotating chamber (210), the rotating shaft (203) is passed through the receiving chamber (213), and the torsion spring (204) is arranged in the receiving chamber (213).

8. The box caster according to claim 7, characterized in that: A first support plate (209) is provided between the rotating chamber (210) and the accommodating chamber (213), the first support plate (209) being provided with a first axial hole, the rotating shaft (203) being passed through the first axial hole, and a second washer (207) being provided in the first axial hole to support the rotating shaft (203) and the locking block (202).

9. The box caster according to claim 8, characterized in that: A first washer (206) is provided at the lower end of the rotating shaft (203) to support the torsion spring (204), and a third washer (208) is provided at the upper end of the rotating shaft (203) to support the locking block (202).

10. The box caster according to claim 2, characterized in that: The locking part (200) further comprises: A rotating shaft (203), the rotating shaft (203) being arranged in the lock body (201), the axial direction of the rotating shaft (203) being perpendicular to the rotation plane of the locking block (202), the locking block (202) being sleeved on the rotating shaft (203), and the locking block (202) and the rotating shaft (203) being capable of synchronously rotating in the lock body (201); A compression spring (215), the compression spring (215) being connected to the rotating shaft (203) and being located above the locking block (202), the compression spring (215) and the rotating shaft (203) being capable of synchronously rotating in the lock body (201); A compression spring (214), wherein the first end of the compression spring (214) abuts against the compression spring sheet (215), and the second end of the compression spring (214) abuts against the lock body (201), and when the lock block (202) drives the rotating shaft (203) to rotate in a first direction, the compression spring sheet (215) squeezes the compression spring (214) to elastically deform.

11. The box caster according to claim 10, characterized in that: When the locking block (202) is not affected by external force, the compression spring (214) drives the compression spring sheet (215) to drive the rotating shaft (203) to rotate along the second direction, and the rotating shaft (203) drives the locking block (202) to rotate along the second direction. The two ends of the locking block (202) gradually extend out of the through hole, and the locking block (202) stops rotating when it rotates to abut against the side wall (211) of the rotating chamber (210).

12. The box caster according to claim 10, characterized in that: The upper part of the lock body (201) is provided with a receiving chamber (213), the receiving chamber (213) is located above the rotating chamber (210), the rotating shaft (203) is passed through the receiving chamber (213), and the compression spring (214) and the compression spring sheet (215) are arranged in the receiving chamber (213).

13. The box caster according to claim 12, characterized in that: A second support plate (218) is provided between the rotating chamber (210) and the accommodating chamber (213); the second support plate (218) is provided with a second axial hole; the rotating shaft (203) is passed through the second axial hole; a fourth washer (217) is provided in the second axial hole to support the rotating shaft (203).

14. The box caster according to claim 12, characterized in that: The locking part (200) further comprises: A cover plate (216), wherein the cover plate (216) is sealed on the upper end of the accommodating cavity (213).

15. The box caster according to claim 5 or 10, characterized in that: The locking block (202) is connected to the rotating shaft (203) via a key.

16. The box caster according to claim 1, characterized in that: The shape of the lock body (201) is adapted to the shape of the bottom connection hole of the bottom corner piece (302) of the container.

17. The box caster according to claim 1, characterized in that: The lock body (201) is fixed to the top of the bracket (103) by welding, or connected and fixed by bolts (104).

18. A container, characterized in that: include: The box caster according to any one of claims 1 to 17; A bottom corner piece (302), the box caster is connected to the bottom corner piece (302), the locking head (200) can be inserted into the bottom corner piece (302), and the locking block (202) can be automatically locked with the bottom corner piece (302).

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