Rack container
By using a hinge device with trapezoidal cross-section locking pins in a bench-type container, the problems of poor locking effect and difficulty in operation of the existing hinge mechanism are solved, and the stable fixation of the end frame is achieved and the cost is reduced.
Patent Information
- Application Number
- CN201710179366.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2017-03-23
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2037-03-23
AI Technical Summary
The hinge mechanism of existing bench-type containers has poor locking effect, resulting in end frame shaking problems, and the operation is laborious or costly.
A hinge device including a fixed hinge, a movable hinge, a rotating shaft and a locking pin is adopted. The locking pin has a trapezoidal cross-section, the first surface is not parallel to the second surface, the intersection line is located below the movable hinge, and the locking pin is inserted into the fixed hinge When locking the pin hole, there is friction to achieve a firm fixation.
The stable fixation of the bench-type container end frame is achieved, eliminating top shaking, and simplifying locking and unlocking operations, reducing operating costs.
Smart Images
Figure CN108622554B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of machinery, and in particular relates to a platform type container. Background Art
[0002] Foldable end-frame containers (referred to as platform containers or folding boxes) include a cargo-carrying bottom frame and end frames (walls) at both ends of the bottom frame. The end walls at both ends can be folded to reduce space occupation during the return transportation of empty containers. Platform containers are very flexible to use. Since there is no top plate and side walls, they can be easily loaded with extra-wide cargo, and are easy to load and unload cargo. They are highly efficient and have a wide range of uses. They are also very economical. When not transporting cargo, several folded boxes can be linked together into a transport module, greatly reducing transportation costs.
[0003] The folding mechanism of the platform container, that is, the hinge mechanism, is a very critical component, which directly affects the carrying capacity and performance of the platform container. At present, there are two mainstream hinge mechanisms, one is the tapered locking pin hinge, and the other is the square locking pin hinge, each of which has its own advantages and disadvantages. The tapered locking pin has a good locking effect. After locking, it can completely eliminate the gap between the pin and the inner and outer hinge edges, making the hinge connection very tight. However, this design is more expensive, and it needs to be knocked during operation to make the tapered pin enter the pin-tight state, which is more laborious to operate. Moreover, the square pin hinge is just the opposite. The manufacturing cost is relatively low and the operation is easier. However, since the gap between the square pin and the inner and outer hinges cannot be eliminated, there is still a gap between the inner and outer hinges after locking, which makes the inner hinge always have a certain amount of sway relative to the outer hinge. When this sway is magnified by the end wall to the top corner piece, it is often not small. It is not as operable as the tapered pin hinge.
[0004] Figure 1 The figure shows a conventional platform container using a square pin hinge. As can be seen from the figure, the end frame of the platform container is connected to the bottom frame through a hinge device 3. Figure 2 It can be seen that the square pin hinge is composed of a fixed hinge 31, a movable hinge 32, a rotating shaft 33 and a square locking pin 34. The fixed hinge 31 is fixedly connected to the end frame 2. The movable hinge 32 is fixed to the base frame 1, and the rotating shaft 33 hinges the fixed hinge 31 on the movable hinge 32. The fixed hinge 31 can rotate around the rotating shaft, thereby driving the end frame structure to rotate. The square locking pin 34 can pass through the inner movable hinge to lock the fixed hinge 31 in a specific position. Then ensure that the end frame 2 structure is in a vertical state. However, in order to facilitate the insertion and removal of the square locking pin 34, the hole on the inner movable hinge is slightly larger than the square locking pin 34, so that a gap G will be formed between the square locking pin 34 and the hole, as shown in the figure. This gap will cause the fixed hinge 31 to shake. And the shaking will be transmitted to the top of the end frame 2 several times.
[0005] Figure 3 An example of an existing tapered pin hinge is shown, in which a fixed hinge 41 has a tapered sleeve 411 for a tapered locking pin to pass through. As can be seen from the figure, the inner size of the sleeve is larger on one side than on the other side. The tapered locking pin 42 is tapered, and is connected to a sliding hammer locking device (referred to as a sliding hammer 421). The tapered locking pin 42 passes through the large end of the tapered sleeve 411. Under the action of the hammering edge of the sliding hammer 421, the fit with the tapered sleeve 411 can be very tight. In this way, there is no gap between the fixed hinge and the movable hinge, thereby reducing the shaking of the top of the end frame 2. However, the construction cost of the tapered pin hinge is higher, and it needs to be knocked during operation to make the tapered locking pin 42 enter the pinned state, which is time-consuming and laborious. Summary of the invention
[0006] In order to at least partially solve the above technical problems, according to one aspect of the present invention, a platform-type container is provided, characterized in that the platform-type container comprises:
[0007] chassis;
[0008] end walls, the end walls being arranged at both ends of the base frame; and
[0009] A hinge device, the hinge device comprising:
[0010] A fixed hinge, the fixed hinge is connected to the base frame, and the fixed hinge is provided with a fixed hinge rotation axis hole and a locking pin hole;
[0011] A movable hinge, the movable hinge is connected to the end wall, and the movable hinge is provided with a movable hinge rotation axis hole and an attachment surface;
[0012] a rotation shaft, the rotation shaft passing through the fixed hinge rotation shaft hole and the movable hinge rotation shaft hole, hinge-connecting the fixed hinge and the movable hinge so that the movable hinge can rotate relative to the base frame; and
[0013] A locking pin, wherein the locking pin has a first surface and a second surface opposite to the first surface. When the end wall is in a vertical locking state, the locking pin is inserted into the locking pin hole of the fixed hinge, the first surface is in contact with the attachment surface of the movable hinge, the second surface is in contact with the surface corresponding to the locking pin hole, the first surface and the second surface are not parallel, and the intersection of the first surface and the second surface is located below the movable hinge.
[0014] Optionally, the attachment surface extends downwardly towards an outer end of the platform container.
[0015] Optionally, the attachment surface is an open structure.
[0016] Optionally, the locking pin hole on the fixed hinge is larger than the size of the locking pin. When the end wall is in a vertical locking state, the locking pin is inserted into the locking pin hole of the fixed hinge. In addition to the first surface, the locking pin has at least one surface that does not contact the locking pin hole.
[0017] Optionally, the locking pin has a trapezoidal cross-section, and when the end wall is in a vertical locking state, a lower surface of the trapezoidal cross-section is smaller than an upper surface of the trapezoidal cross-section.
[0018] Optionally, when the end wall is in a vertical locking state, an angle b1 between the first surface of the locking pin and a perpendicular line between a midpoint of the first surface and the rotation axis is less than arctan(a), and an angle b2 between the second surface of the locking pin and a perpendicular line between a midpoint of the second surface and the rotation axis is less than arctan(a), where a is the friction coefficient between the locking pin and the fixed hinge and the movable hinge.
[0019] Optionally, both b1 and b2 are smaller than 9 degrees.
[0020] The platform-type container according to the present invention has a hinge device including a locking pin, so that locking and unlocking operations can be conveniently performed and firm fixation between the fixed hinge, the movable hinge and the locking pin can be achieved, thereby eliminating the shaking of the top of the end frame of the platform-type container. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to make the advantages of the invention more easily understood, the invention briefly described above will be described in more detail by reference to specific embodiments shown in the accompanying drawings. It will be understood that these drawings depict only typical embodiments of the invention and are therefore not to be considered as limiting the scope of protection thereof, and the invention is described and explained with additional specificity and detail through the accompanying drawings. In the drawings:
[0022] Figure 1 It is an existing bench-type container (using square locking pin hinge);
[0023] Figure 2 yes Figure 1 A structural diagram of a square locking pin hinge of a platform container shown;
[0024] Figure 3 It is a structural diagram of an existing tapered locking pin;
[0025] Figure 4 is a partial enlarged view of a platform-type container according to a preferred embodiment of the present invention;
[0026] Figure 5is an exploded detail of a trapezoidal cross-section locking pin hinge with a portion of the outer hinge removed;
[0027] Figure 6 It is a structural diagram of the inner hinge;
[0028] Fig. 7A It is a structural diagram of a trapezoidal locking pin;
[0029] Figure 7B is a cross-sectional view of a trapezoidal locking pin;
[0030] Fig. 8A yes Figure 5 A schematic diagram of a hinge device of a platform container is shown;
[0031] Figure 8B yes Fig. 8A An enlarged view of part B in FIG.
[0032] Fig. 9 is a partial enlarged view of a platform-type container according to another preferred embodiment of the present invention; and
[0033] Fig.10 yes Figure 8B Another enlarged view of the figure, showing the intersection of the first surface and the second surface.
[0034] Description of reference numerals:
[0035] 1: Base frame 2: End wall
[0036] 3: Hinge device 31: Living hinge
[0037] 32: Fixed hinge 33: Rotating axis
[0038] 34: Square locking pin 41: Living hinge
[0039] 411: Tapered sleeve 42: Tapered locking pin
[0040] 421: Slide hammer 51: Living hinge
[0041] 511: Attachment surface 512: Living hinge rotation axis hole
[0042] 52: Fixed hinge 521: Locking pin hole
[0043] 53: Rotating shaft 54: Locking pin
[0044] 541: first surface 542: second surface DETAILED DESCRIPTION
[0045] In the discussion below, details are given to provide a more thorough understanding of the present invention. However, it will be appreciated by those skilled in the art that the present invention can be implemented without one or more of these details. In certain examples, some technical features known in the art are not described in detail to avoid confusion with the present invention. It should be noted that the terms "upper", "lower", "front", "back", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.
[0046] refer to Figure 4 and Figure 5 , which shows a partial enlarged view of a platform container according to a preferred embodiment of the present invention. The platform container may include a base frame and an end wall arranged at the end of the base frame, and a hinge device connecting the base frame and the end wall. Through the hinge device, the end wall can rotate relative to the base frame between an erected position and a flipped position.
[0047] The hinge device of the platform container according to the present invention comprises a fixed hinge 52, a movable hinge 51, a rotation shaft 53 and a locking pin 54. Specifically, the fixed hinge 52 is connected to the base frame, and the movable hinge 51 is connected to the end wall. The fixed hinge 52 is provided with a fixed hinge rotation shaft hole and a locking pin hole 521, and the movable hinge 51 has a movable hinge rotation shaft hole and an attachment surface 511. The rotation shaft 53 passes through the fixed hinge rotation shaft hole 512 and the movable hinge rotation shaft hole, and hinges the fixed hinge 52 and the movable hinge 51, so that the movable hinge 51 can rotate relative to the base frame.
[0048] like Figure 6 As shown, the attachment surface 511 of the living hinge 51 is used to contact the locking pin 54. In the illustrated embodiment, when the end wall is in the vertical locking state, the angle between the attachment surface 511 of the living hinge 51 and the horizontal plane can be greater than 90 degrees.
[0049] When in use, the locking pin 54 can extend through the locking pin hole 521 and contact the attachment surface 511, and the locking pin 54 has a first surface 541 and a second surface 542 opposite to each other. The first surface 541 for contacting the attachment surface 511 of the movable hinge 51 and the second surface 542 for contacting the locking pin hole 521 of the fixed hinge 52 are not parallel. Specifically, the first surface is in contact with the attachment surface 511 of the movable hinge 51, and the second surface 542 is in contact with the corresponding surface of the locking pin hole 521.
[0050] like Fig. 7A and Figure 7B As shown, unlike the square cross-section locking pin, the locking pin 54 has a trapezoidal cross section along the radial direction, and when the end wall is in a vertical locking state, the lower surface of the trapezoidal cross section is smaller than the upper surface of the trapezoidal cross section. Correspondingly, the locking pin hole 521 has a pair of parallel sides.
[0051] As described above, the two side surfaces of the locking pin 54 are the first surface 541 and the second surface 542 respectively, and the first surface 541 and the second surface 542 are not parallel. In other words, as can be seen in FIG. 7, there is an included angle C between the first surface 541 and the second surface 542.
[0052] Optionally, the attachment surface 511 may extend downward toward the outer end of the platform container. This facilitates the generation of frictional force by the locking pin 54. Further, the attachment surface 511 may be configured as an open structure, whereby the cooperation between the locking pin 54 and the attachment surface 511 can be facilitated.
[0053] It can be conceived that since the first surface 541 and the second surface 542 are not parallel, when the locking pin 54 passes through the locking pin hole 521 and contacts the attachment surface 511, under the action of gravity, the locking pin 54 can move downward until the first surface 541 of the locking pin 54 abuts or is in full contact with the attachment surface 511, and the locking pin hole 521 abuts against the second surface 542. Thereby, a firm fixation among the fixed hinge 52 (locking pin hole 521), the movable hinge 51 (attachment surface 511), and the locking pin 54 can be achieved.
[0054] The platform container according to the present invention has a hinge device including a locking pin, so that the locking and unlocking operations can be conveniently performed, and a firm fixation among the fixed hinge, the movable hinge, and the locking pin can be achieved, and the shaking at the top of the end frame of the platform container can be eliminated.
[0055] The included angle between the first surface 541 and the second surface 542 can be selected according to the locking pin 54 and the materials of the first surface 541 and the second surface 542, and this included angle needs to be less than the friction self-locking angle of the materials.
[0056] Specifically, when the end wall is in the vertical locking state, the included angle b1 between the first surface 541 of the locking pin 54 and the perpendicular line of the connection line AX1 between the midpoint of the first surface 541 and the rotation axis (center) is less than arctan(a), and the included angle b2 between the second surface 542 of the locking pin 54 and the perpendicular line of the connection line AX2 between the midpoint of the second surface 542 and the rotation axis (center) is also less than arctan(a), where a is the friction coefficient between the locking pin and the fixed hinge and the movable hinge.
[0057] Preferably, both b1 and b2 are less than 9 degrees. For example, if the friction coefficient between the locking pin 54 and the movable hinge 51 is 0.15, then the included angle a < arctan(0.15), that is, it should be less than 8.53 degrees.
[0058] In addition, referring to Fig.10The intersection line M of the first surface 541 and the second surface 542 should be located below the locking pin, that is, the small head of the trapezoid faces downward (the downward angle here is selected according to needs, for example, it can be diagonally downward or vertically downward).
[0059] Optionally, the locking pin hole 521 on the fixed hinge 52 is larger than the size of the locking pin 54, so that when the end wall is in the vertical locking state, when the locking pin 54 is inserted into the locking pin hole 521 of the fixed hinge 52, as shown in FIG. Fig. 8A As shown, the first surface 541 of the locking pin 54 contacts the movable hinge 51 , and the second surface 542 contacts the fixed hinge 52 , and except for the first surface 541 , the locking pin 54 has at least one surface that does not contact the locking pin hole.
[0060] For example, in the illustrated embodiment, in addition to the first surface 541, the locking pin 54 also has two surfaces that do not contact the locking pin hole 521. Of course, in an embodiment not shown, in addition to the first surface 541, the locking pin 54 may have at least one surface that does not contact the locking pin hole 521.
[0061] When there is a gap between the locking pin 54 and the first surface 541 or the second surface 542 and they are not completely fitted together, the locking pin 54 will slide downward along the attachment surface 511 under the action of gravity, so that the first surface 541 fits with the attachment surface 511 and the second surface 542 contacts the locking pin hole 521.
[0062] Even when the friction between the locking pin 54 and the first surface 541 or the second surface 542 is large and the locking pin 54 cannot slide by itself, the locking pin 54 can be shaken to make it contact with both the movable hinge 51 and the fixed hinge 52.
[0063] In the working state, the two first surfaces 541 or the second surfaces 542 will receive a squeezing force perpendicular to the first surface 541 or the second surface 542. In other words, the first surface 541 receives a force from the attachment surface 511 of the movable hinge 51, and the second surface 542 receives a force from the locking pin hole 521 of the fixed hinge 52.
[0064] Since the angle between the first surface 541 and the second surface 542 is smaller than the friction angle, no relative sliding occurs between the movable hinge 51 and the locking pin 54 or between the locking pin 54 and the fixed hinge 52, thereby ensuring the locking state of the movable hinge 51. This also ensures that the top of the end frame will not shake.
[0065] Now go to Fig. 9In another embodiment of the present invention, the locking pin hole 521 on the fixed hinge 52 has two parallel sides, and the parallel sides are arranged in the horizontal direction. And, as required, when the end wall is in the vertical locking state, the angle between the attachment surface 511 of the movable hinge 51 and the horizontal plane can be greater than or equal to 90 degrees.
[0066] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "component" and the like appearing herein may represent either a single part or a combination of multiple parts. Terms such as "installation" and "setting" and the like appearing herein may represent either a component being directly attached to another component or a component being attached to another component through an intermediate. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.
[0067] 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 illustration, and are not intended to limit the present invention to the described embodiments. It can be understood by those skilled in the art that 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 platform container, characterized in that: The platform container comprises: chassis; end walls, the end walls being arranged at both ends of the base frame; and A hinge device, comprising: A fixed hinge, the fixed hinge is connected to the base frame, and the fixed hinge is provided with a fixed hinge rotation axis hole and a locking pin hole; A movable hinge, the movable hinge being connected to the end wall, the movable hinge being provided with a movable hinge rotation axis hole and an attachment surface, the attachment surface extending downward toward the outer end of the platform container; a rotation shaft, the rotation shaft passing through the fixed hinge rotation shaft hole and the movable hinge rotation shaft hole, hinge-connecting the fixed hinge and the movable hinge so that the movable hinge can rotate relative to the base frame; and A locking pin, wherein the locking pin has a first surface and a second surface opposite to the first surface, when the end wall is in a vertical locking state, the locking pin is inserted into the locking pin hole of the fixed hinge, the first surface is in contact with the attachment surface of the movable hinge, the second surface is in contact with the surface corresponding to the locking pin hole, the first surface and the second surface are not parallel, and the intersection of the first surface and the second surface is located below the movable hinge, Wherein, the locking pin hole on the fixed hinge is larger than the size of the locking pin. When the locking pin passes through the locking pin hole, under the action of gravity, the locking pin can move downward along the attachment surface to put the end wall in a vertical locking state.
2. The platform container according to claim 1, characterized in that: The attachment surface is an open structure.
3. The platform container according to claim 1, characterized in that: When the end wall is in a vertical locking state, the locking pin is inserted into the locking pin hole of the fixed hinge, and except for the first surface, the locking pin has at least one surface that does not contact the locking pin hole.
4. The platform container according to claim 1, characterized in that: The locking pin has a trapezoidal cross section along the radial direction. When the end wall is in a vertical locking state, the lower surface of the trapezoidal cross section is smaller than the upper surface of the trapezoidal cross section.
5. The platform container according to any one of claims 1 to 4, characterized in that: When the end wall is in a vertical locking state, an angle b1 between the first surface of the locking pin and a perpendicular line between the midpoint of the first surface and the rotation axis is less than arctan(a), and an angle b2 between the second surface of the locking pin and a perpendicular line between the midpoint of the second surface and the rotation axis is less than arctan(a), where a is the friction coefficient between the locking pin and the fixed hinge and the movable hinge.
6. The platform container according to claim 5, characterized in that: Both b1 and b2 are smaller than 9 degrees.