A fixing device for coil material transportation

Abstract

This application provides a fixing device for transporting roll materials. The fixing device includes a base and two support frames. The base includes a base frame and a bearing plate fixed to the base frame. The two support frames are rotatably connected to opposite sides of the base. Each support frame includes a vertical support rod and a horizontal connecting rod. A limiting part for restricting the movement of the roll material is formed on the support frame. A plane perpendicular to the horizontal connecting rod and substantially bisects the limiting part is defined as a plane of symmetry. The distance from the lowest point of the limiting part to the bearing plate is defined as a first distance. The distance between the planes of symmetry of the two limiting parts on the support frame is defined as a second distance. The ratio between the first distance and the second distance ranges from 0.35 to 0.53. By limiting the ratio of the first distance and the second distance, it is ensured that the roll material of any size maintains a certain distance from the bearing plate below during transportation, avoiding damage to the bottom film material of the roll material due to its own weight during transportation.

Description

Technical Field

[0001] This application relates to the field of transport packaging technology, and in particular to a fixing device for transporting roll materials. Background Technology

[0002] Layered products such as polymer film materials and metal films are typically transported in rolls. To protect the rolls and prevent displacement during transport, traditional methods employ fixing devices to secure and limit their movement. However, these fixing devices have inherent limitations in their layout and placement, making the rolls susceptible to damage after transport. This is particularly true for photovoltaic encapsulant films, essential in the photovoltaic industry. Using these fixing devices during transport can easily lead to damage due to compression or other factors, affecting subsequent use and even the performance of the final photovoltaic modules. Utility Model Content

[0003] To address the aforementioned issues, this application provides a fixing device for transporting rolled materials with a reasonable structural layout. This fixing device can improve the stability of the rolled material during transportation and prevent damage to the rolled material caused by mutual compression or gravitational compression during transportation.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0005] This application provides a fixing device for transporting roll material. The fixing device includes a base, two support frames, and a locking mechanism. The base includes a base frame and a bearing plate fixed on the base frame. The two support frames are rotatably connected to two opposite sides of the base. Each support frame includes two vertical support rods and a horizontal connecting rod. The two vertical support rods are respectively connected to the two ends of the horizontal connecting rod. At least two limiting parts for restricting the movement of the roll in the roll material are also formed on the support frame. The limiting parts are configured to be basically at the same height in the support frame.

[0006] A locking mechanism, comprising a locking base connected to a base or support frame and a locking element connected to the locking base and restricting relative rotation of the support frame;

[0007] A plane perpendicular to the transverse connecting rod and substantially bisects one of the limiting parts is defined as a plane of symmetry. The distance from the lowest point of the limiting part to the bearing plate is defined as the first distance. The distance between the planes of symmetry of two limiting parts on the same support frame is defined as the second distance. The ratio between the first distance and the second distance ranges from 0.35 to 0.53.

[0008] Furthermore, the first distance ranges from 230mm to 300mm, and the second distance ranges from 490mm to 640mm.

[0009] Furthermore, the support frame also includes a support member, which is fixedly connected to the upper surface of the transverse connecting rod, and the support member forms a limiting part; or

[0010] The fixing device also includes a limiting frame that can cooperate with the transverse connecting rod to form a limiting part, the limiting frame being configured to be rotatably connected to the support frame or the limiting frame being configured to be detachably connected to the transverse connecting rod.

[0011] Furthermore, the cross-sectional shape of the limiting part is at least one of the following: V-shape, a derivative shape of V-shape, arc shape, a derivative shape of arc shape, or rectangle.

[0012] Furthermore, when the cross-sectional shape of the limiting part is an arc or a derivative of an arc, the range of the central angle corresponding to the arc is 60° to 180°.

[0013] Furthermore, when the cross-sectional shape of the limiting part is V-shaped or a derivative of V-shaped, the included angle between the two sides ranges from 5° to 75°.

[0014] Furthermore, the support frame also includes a stop, which is configured to surround the limiting portion, and the stop includes a baffle located on the outside of the support.

[0015] Furthermore, the base is also equipped with an outward-folding limiting component to limit the outward-folding angle of the support frame. When the support frame folds outward, the angle between the support frame and the vertical plane ranges from 5° to 90°.

[0016] Furthermore, the ratio of the height of the support frame to the distance between the two sides of the support frame ranges from 0.2 to 0.6.

[0017] Furthermore, the base frame is basically quadrilateral, and the base frame includes at least two oppositely distributed main load-bearing sides and at most two oppositely distributed secondary load-bearing sides. The bottom of one main load-bearing side is provided with at least two load-bearing feet and a load-bearing base plate connecting the load-bearing feet together. The bottom of one secondary load-bearing side is provided with at least two load-bearing feet located near the four corners of the base frame.

[0018] Furthermore, the base also includes a first positioning part located at the top of the base and a second positioning part located at the bottom of the base for cooperating with the first positioning part. The first positioning part is a positioning protrusion and the second positioning part is a positioning groove, or the first positioning part is a positioning groove and the second positioning part is a positioning protrusion.

[0019] Furthermore, the base includes a first stacking part located on the base, and a second stacking part is provided at the top of the vertical support rod for connecting the first stacking part. The first stacking part is a stacking protrusion and the second stacking part is a stacking groove, or the first stacking part is a stacking groove and the second stacking part is a stacking protrusion.

[0020] In this application, by limiting the ratio of the first distance to the second distance to a range of 0.35 to 0.53, it is ensured that the roll material of any size is always kept at a certain distance from the support plate below during transportation. This gap is used to prevent damage to the film material at the bottom of the roll material due to its own gravity during transportation. At the same time, by limiting the first distance and the second distance, the size of the gap between the roll material and the support plate below is controlled, so as to avoid damage to the roll material caused by falling during unloading due to excessive gap height. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the fixing device provided in the embodiments of this application;

[0022] Figures 2 to 6 A structural schematic diagram of the support frame provided in this application;

[0023] Figure 7 The structural diagram of the support frame with a material stop provided in this application

[0024] Figure 8 A schematic diagram showing the support frame provided in this application flipped outwards;

[0025] Figure 9 A schematic diagram of the support frame folded inward in the fixing device provided in this application;

[0026] Figure 10 This is a structural schematic diagram of the base in the fixing device provided in this application;

[0027] Figure 11 This is a schematic diagram of the structure of multiple fixing devices stacked together, as provided in this application.

[0028] In the figure: fixing device 100, base 11, base frame 111, main load-bearing side 1111, secondary load-bearing side 1112, load-bearing foot 1113, load-bearing base plate 1114, bearing plate 112, outward limiting part 113, first positioning part 114, second positioning part 115, first stacking part 116, support frame 12, vertical support rod 121, horizontal connecting rod 122, limiting part 123, support member 124, limiting frame 125, material stop 126, second stacking part 127, locking mechanism 13, locking base 131, locking member 132; symmetry plane 101. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in specific embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0030] This application provides a method such as Figure 1The shown is a fixing device 100 for transporting rolls of material, which includes a base 11, two support frames 12 and a locking mechanism 13.

[0031] This application describes the fixing device 100 in its normal use state, that is, it is located below the base 11 and in contact with the ground or mounting surface, while the support frame 12 is located above the base 11. In addition, for better explanation, the application may use terms such as "inner", "outer", "inner side", "outer side", etc. In this application, a straight line extending vertically and passing through the center of the base 11 is used as the center line, the direction closer to the center line is "inner", the direction away from the center line is "outer", the side closer to the center line is "inner side", and the side away from the center line is "outer side".

[0032] The base 11 constitutes the basic main structure of the fixing device 100, and other components are directly or indirectly connected to or installed on the base 11. During the use of the fixing device 100, the base 11 is in direct contact with the ground or the mounting surface, and the base 11 also serves to support and stabilize the fixing device 100.

[0033] The base 11 includes a base frame 111 and a support plate 112, with the support plate 112 fixed to the base frame 111. The base frame 111 constitutes the main load-bearing structure of the base 11, and the support plate 112 is used to bear or support the roll material during unloading, especially to catch the roll material falling from the support frame 12 during unloading.

[0034] The support frame 12 is mainly used to support the roll material during transportation and also serves to limit the movement of the roll material. The support frame 12 is rotatably connected to the base 11, and the support frame 12 can rotate relative to the base 11, allowing the support frame 12 to switch between a vertical state supporting the roll material during transportation, an outward flipped state when unloading the roll material, and an inward folded storage state after transportation. A locking device locks the support frame 12 in each of these corresponding states. The support frames 12, located only on two opposite sides of the base 11, serve the purpose of supporting the roll material during transportation while freeing up space on the remaining two sides of the base 11, improving the convenience of loading and unloading the roll material. This also saves on the cost and overall weight of the fixing device 100. The support frame 12 includes vertical support rods 121 and horizontal connecting rods 122, with the two vertical support rods 121 connected to the two ends of the horizontal connecting rods 122 respectively. The support frame 12 is connected to the base 11, and when the support frame 12 is in a vertical position, the vertical support rods 121 are basically located at the four corners of the base 11. At least two limiting portions 123 are also formed on one of the support frames 12. These limiting portions 123 are mainly used to restrict the movement of the roll of material, especially during the transport of the roll, to confine the roll within the limiting portions 123, preventing collisions between the roll and other components, and also limiting collisions between adjacent roll supports. The limiting portions 123 on the two opposing support frames 12 can cooperate to fix a roll of material. The limiting portions 123 also effectively support the roll of material, supporting the roll and maintaining a certain gap between the roll and the support plate 112 during transport. The limiting portions 123 are basically at the same height in the support frame 12, which facilitates the installation and fixation of the roll within the fixing device 100, and also facilitates the transport of the roll. Furthermore, the support frame 12 may include a structural member (which may be referred to as a limiting member) forming a limiting portion 123, which can form the limiting portion 123 on its own, or the limiting portion 123 can be formed by the structural member cooperating with the transverse connecting rod 122.

[0035] As mentioned above, the locking mechanism 13 is mainly used to lock the support frame 12 and the base 11 together. When necessary, it can fix the support frame 12 and the base 11 to prevent rotation between them. The locking mechanism 13 can lock the support frame 12 to any of the three states mentioned above according to actual needs. The locking mechanism 13 basically includes a locking base 131 and a locking member 132. The locking mechanism 13 is located at one of the base 11 or the support frame 12. At least a part of the locking member 132 is connected to the locking base 131, and the other part of the locking member 132 can be locked to the support frame 12 or the base 11, thereby achieving the purpose of locking the support frame 12 and the base 11 together.

[0036] Furthermore, a plane perpendicular to the transverse connecting rod 122 and substantially bisecting one of the limiting portions 123 is defined as the symmetry plane 101. The distance from the lowest point of the limiting portion 123 to the support plate 112 is defined as the first distance L1. The distance between the symmetry planes 101 of the two limiting portions 123 on the same support frame 12 is defined as the second distance L2. The ratio between the first distance L1 and the second distance L2 ranges from 0.35 to 0.53. When the bottom of the limiting portion 123 is parallel to the support plate 112, the first distance L1 is the distance from the bottom of the roll shaft to the support plate 112. Since the function of the limiting portion 123 is to support the roll shaft and restrict its position, even if the bottom of the limiting portion 123 and the support plate 112 are not parallel, the first distance L1 is still substantially equal to the distance from the bottom of the roll shaft to the support plate 112. To better restrict the position of the roll, after the roll is installed to the limiting part 123, the axis of the roll also passes through the symmetrical plane of the limiting part 123. The second distance L2 is basically the distance between the axes of the rolls in two adjacent rolls. By limiting the ratio of the first distance L1 and the second distance L2 to the above range, it is possible to ensure that there is always a gap between the roll and the support plate 112 after it is installed on the fixing device 100, avoiding damage to the roll caused by compression between the roll and the support plate 112 due to gravity during transportation. At the same time, it is also possible to ensure that the roll will not suffer irreversible drop damage due to an excessive distance between the roll and the support plate 112 when it is disassembled. Further, the ratio of the first distance L2 to the second distance L2 is in the range of 0.40 to 0.48. Even further, the ratio of the first distance L1 to the second distance L2 is in the range of 0.42 to 0.46.

[0037] As an optional implementation, the first distance L1 ranges from 230mm to 300mm. Within this range, the first distance L1 avoids both situations where a small distance prevents the loading of larger roll materials or causes direct contact between the roll material loaded onto the fixing device 100 and the support plate 112, and situations where an excessive distance prevents irreversible drop damage during roll material removal. Further, the first distance L1 ranges from 240mm to 300mm. Even further, the first distance L1 ranges from 255mm to 285mm.

[0038] As an optional implementation, the second distance L2 ranges from 490mm to 640mm. Within this range, the second distance L2 can accommodate the loading of conventionally sized rolls while avoiding wasted space. Further, the second distance L2 ranges from 530mm to 600mm. Even further, the second distance L2 ranges from 550mm to 580mm.

[0039] As an optional implementation method, such as Figure 2As shown, the support frame 12 also includes a support member 124, which is fixedly connected to the upper surface of the transverse connecting rod 122, and the support member 124 forms a limiting part 123; or, as Figure 3 As shown, the fixing device 100 also includes a limiting frame 125 that can cooperate with the transverse connecting rod 122 to form a limiting part 123. The limiting frame 125 is configured to be rotatably connected to the support frame 12 or the limiting frame 125 is configured to be detachably connected to the transverse connecting rod 122.

[0040] In the fixing device 100 of this application, a limiting part 123 for limiting the position of the roll in the roll material can be formed. This limiting part 123 in the fixing device 100 can be formed in basically two forms. For example... Figure 2 As shown, the first method involves providing a support member 124 capable of supporting the roll on the support frame 12. This application relies solely on the support member 124 to provide support and limit the movement of the roll. For example... Figure 3 As shown, the second method is to provide a limiting frame 125 in the fixing device 100, which can form a limiting part 123 by cooperating with the transverse connecting rod 122 in the support frame 12.

[0041] like Figure 2 As shown, in the first embodiment, the bottom of the support member 124 is fixedly connected to the upper surface of the transverse connecting rod 122 of the support frame 12, and a limiting part 123 is formed on the support member 124 to accommodate the spool in the roll material. When loading the roll material, the spool is placed into the limiting part 123 formed by the support member 124 from above, and the support member 124 serves the purpose of both bearing and limiting the spool.

[0042] like Figure 3 As shown, in the second method, the limiting frame 125 only serves to limit the movement of the roll, while the transverse connecting rod 122 serves to support the roll. The limiting frame 125 and the transverse connecting rod 122 cooperate to form a limiting part 123, which serves both limiting and supporting purposes. The limiting frame 125 can be rotatably connected to the transverse connecting rod 122. When loading the roll, the limiting frame 125 rotates to above the transverse connecting rod 122, and the limiting frame 125 and the transverse tension rod form the limiting part 123. When loading and unloading the roll, the limiting frame 125 can fold outwards to facilitate loading and unloading. The limiting frame 125 can also be connected to the transverse connecting rod 122 by means of insertion or other methods (e.g., ...). Figure 3 As shown in the figure, when loading the roll material, the limiting frame 125 is inserted into the transverse connecting rod 122 from above or the side. After the limiting frame 125 and the transverse tension rod cooperate, a limiting part 123 is formed in the vertical direction. When loading and unloading the roll material, the limiting frame 125 can be stepped down from the transverse connecting rod 122 to facilitate the loading and unloading of the roll material.

[0043] As an optional implementation, the cross-sectional shape of the limiting part 123 is V-shaped (e.g., Figure 2 As shown), derivative shapes of the V-shape (such as...) Figure 4 As shown), arc-shaped (as shown) Figure 5 As shown), arc-shaped derivative shapes (such as...) Figure 6 (as shown) or rectangle (such as) Figure 3 At least one of the following (as shown). V-shaped derivative structures include shapes resembling an inverted "eight" (such as...). Figure 4 As shown, the two sides form an included angle, but their vertices do not intersect. The limiting part 123 has a V-shaped or V-shaped derivative cross-section to accommodate various sizes of reels. A circular arc or circular arc derivative cross-section allows for a higher degree of fit between the limiting part 123 and the reel of the roll material, increasing the contact area between the limiting part 123 and the reel and improving the limiting effect. When the limiting part 123 has a rectangular cross-section, its structure is simple and it can limit the reel of the roll material through its four sides, offering advantages such as simple manufacturing, low cost, and excellent limiting effect.

[0044] As an optional implementation, when the cross-sectional shape of the limiting part 123 is V-shaped or a derivative of V-shaped, such as... Figure 2 and Figure 4 As shown, the included angle α between the two sides ranges from 5° to 75°. In V-shaped or V-derived shapes, the included angle between the two sides falls within this range, which satisfies the requirement to accommodate various scroll sizes while avoiding the problem of the limiting part 123 being too large and occupying too much space, thus affecting other structures. Further, the included angle α ranges from 20° to 60°. Even further, the included angle α ranges from 30° to 50°.

[0045] As an optional implementation method, such as Figure 5 and Figure 6 As shown, when the cross-sectional shape of the limiting part 123 is an arc shape or a derivative of an arc shape, the central angle β corresponding to the arc ranges from 60° to 180°. When the central angle of the arc is within this range, it avoids the problem of being unable to limit the roll of material due to an excessively small central angle, while also avoiding the problem of an excessively large central angle occupying too much space and affecting other structures. Further, the central angle β corresponding to the arc ranges from 60° to 150°. Even further, the central angle β corresponding to the arc ranges from 90° to 180°.

[0046] As an optional implementation method, such as Figure 7As shown, the support frame 12 also includes a baffle 126, which is configured to surround the limiting portion 123. The baffle 126 includes a baffle located outside the support member 124. The baffle 126 can be a baffle located outside the support member 124, which can restrict the axial movement of the spool and the roll material, and prevent damage to the fixing device 100 and the roll material caused by axial movement of the spool and the roll material during transportation and other processes.

[0047] As an optional implementation method, such as Figure 8 As shown, the base 11 is also provided with an outward-folding limiting member 113 for limiting the outward-folding angle of the support frame 12. When the support frame 12 is folded outward, the angle γ between the support frame 12 and the vertical plane ranges from 0° to 90°. In this application, the support frame 12 can also be folded outward to achieve the purpose of removing the limiting part 123 in the roll material. Figure 8 The solid line indicates the support frame 12 in a vertical position, while the dashed line indicates the support frame in an outward-folded position. The outward-folding angle of the support frame 12 is limited by the outward-folding limiting member 113. By limiting the outward-folding angle of the support frame 12 within the aforementioned range, the purpose of allowing the roll and material to be withdrawn from the limiting part 123 for unloading after the support frame 12 is folded outwards is achieved, while avoiding excessive occupation of lateral space or inconvenience caused by an excessively large outward-folding angle. Furthermore, the angle γ between the support frame 12 and the vertical plane when the support frame 12 is folded outwards ranges from 0° to 60°. Even further, the angle γ between the support frame 12 and the vertical plane when the support frame 12 is folded outwards ranges from 0° to 30°.

[0048] As an optional implementation method, such as Figure 9 As shown, the ratio of the height L3 of the support frame 12 to the distance L4 between the two sides of the support frame 12 ranges from 0.2 to 0.6. When the roll material is not loaded, in order to reduce the space occupied by the fixing device 100, the support frame 12 in the fixing device 100 needs to be folded inward for storage. When the height of the support frame 12 and the distance between the two sides of the support frame 12 are within the above range, it can ensure that the support frame 12 has a suitable height to achieve good support and restraint for the roll material, while also improving the storage convenience of the support frame 12 and the flatness of the support frame 12 on the base 11 after storage, which facilitates the storage and subsequent transportation of the fixing device 100. Further, the ratio of the height L3 of the support frame 12 to the distance L4 between the two sides of the support frame 12 ranges from 0.3 to 0.5. Even further, the ratio of the height L3 of the support frame 12 to the distance L4 between the two sides of the support frame 12 ranges from 0.35 to 0.45.

[0049] As an optional implementation method, such as Figure 10As shown, the base frame 111 is basically quadrilateral. The base frame 111 includes at least two oppositely distributed main load-bearing sides 1111 and at most two oppositely distributed secondary load-bearing sides 1112. The bottom of one main load-bearing side 1111 is provided with at least two load-bearing feet 1113 and a load-bearing base plate 1114 connecting the load-bearing feet 1113 together. The bottom of one secondary load-bearing side 1112 is provided with at least two load-bearing feet 1113 located near the four corners of the base frame 111.

[0050] Multiple load-bearing feet 1113 and load-bearing base plates 1114 connecting the load-bearing feet 1113 are provided in the main load-bearing side 1111 of the base 11, and the load-bearing feet 1113 are evenly distributed, which can improve the load-bearing capacity of the load-bearing side and enhance the overall load-bearing capacity and load-bearing stability of the fixing device 100. The secondary load-bearing side 1112 of the base 11 is provided with a correspondingly smaller number of load-bearing feet 1113, and the position of the load-bearing feet 1113 is closer to the four corners of the base frame 111, which can ensure that the secondary load-bearing side 1112 also has a certain load-bearing capacity and can obtain a larger empty space. Setting all four sides of the base 11 as load-bearing sides obviously improves the load-bearing capacity of the fixing device 100. However, the number of load-bearing feet 1113 in the secondary load-bearing side 1112 is small and they are set close to the four corners, which can free up a large space in the middle of the secondary load-bearing side 1112. This space is convenient to accommodate the forklift fork arm, and the fixing device can be loaded and unloaded using forklifts and other transfer devices, which improves the convenience of transfer and also improves the work efficiency during the transfer process.

[0051] Limiting the number of main load-bearing sides 1111 in the base frame 111 to at least two and the number of secondary load-bearing sides 1112 to at most two better ensures the load-bearing capacity of the base 11 and the fixing device 100, while also allowing for the provision of operating space for the forklift arms according to actual needs. When all four sides of the base frame 111 are set as main load-bearing sides 1111, that is, when the base frame 111 has a large number of evenly distributed load-bearing feet 1113 on all four sides, the positions of the load-bearing feet 1113 can be slightly adjusted to provide operating space for the forklift arms.

[0052] As an optional implementation method, such as Figure 10 As shown, the base 11 also includes a first positioning part 114 located at the top of the base 11 and a second positioning part 115 located at the bottom of the base 11 and cooperating with the first positioning part 114. The first positioning part 114 is a positioning protrusion and the second positioning part 115 is a positioning groove, or the first positioning part 114 is a positioning groove and the second positioning part 115 is a positioning protrusion.

[0053] The fixing device 100 of this application can be stored when it is not needed to load the roll material. After being stored, the fixing devices 100 are stacked together for transportation. After providing a first positioning part 114 and a second positioning part 115 that cooperates with the first positioning part 114 on the base 11, it is possible to quickly position the fixed devices 100 during the stacking process after storage, and at the same time, it is possible to fix and connect the fixed devices 100 together after stacking, thereby improving the stability of the fixed devices 100 after stacking.

[0054] Specifically, in the base 11, a first positioning part 114 is provided at the top and a second positioning part 115 is provided at the bottom of a pair of opposite sides. In specific applications, the structure of the first positioning part 114 and the second positioning part 115 can be selected according to actual needs. Furthermore, positioning protrusions and positioning grooves of appropriate shapes can also be selected according to the actual application scenario and usage requirements, as long as the positioning protrusions and positioning grooves have corresponding structures and can cooperate to achieve the positioning and connection of the first positioning part 114 and the second positioning part 115.

[0055] As an optional implementation method, Figure 11 As shown, the base 11 includes a first stacking part 116 located at the bottom of the base 11, and the support frame 12 includes a second stacking part 127 for connecting the first stacking part 116 located at the top of the vertical support rod 121.

[0056] A first stacking section 116 and a second stacking section 127 are respectively provided at the bottom of the base 11 and the top of the vertical support rod 121, which can assist in the stacking of the fixing device 100 after loading the roll material. When multiple sets of fixing devices 100 are stacked along the height direction, the first stacking section 116 and the second stacking section 127 can be used for positioning, so that the stacking structure formed by multiple fixing devices 100 is reasonable and appropriate, and the purpose of quickly stacking the fixing devices 100 can also be achieved. At the same time, the first stacking section 116 and the second stacking section 127 cooperate with each other to improve the stability of adjacent fixing devices 100 after stacking, and avoid problems such as overturning caused by unstable connection.

[0057] The first stacking portion 116 is a stacking protrusion and the second stacking portion 127 is a stacking groove, or the first stacking portion 116 is a stacking groove and the second stacking portion 127 is a stacking protrusion. In the first stacking portion 116 and the second stacking portion 127, one can be a stacking protrusion with a raised structure, and the other can be a stacking groove with a recessed structure. The protrusion and groove can quickly adapt and achieve a stable connection. Specifically, the first stacking portion 116 can be a stacking protrusion, and correspondingly, the second stacking portion 127 can be a stacking groove. Alternatively, the first stacking portion 116 can be a stacking groove, and correspondingly, the second stacking portion 127 can be a stacking protrusion. In specific applications, the structure of the first stacking portion 116 and the second stacking portion 127 can be selected according to actual needs. Furthermore, stacking protrusions and grooves of appropriate shapes can also be selected according to actual application scenarios and usage requirements, as long as the stacking protrusions and grooves have corresponding structures and can achieve the connection of the first stacking portion 116 and the second stacking portion 127 through mutual cooperation. Using the first stacking portion 116 and the second stacking portion 127 in the fixing device 100, multiple fixing devices 100 can be used as follows: Figure 11 The rolls are stacked together to increase convenience and space utilization during transport.

[0058] Finally, it should be noted that the above are only some preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fixing device for transporting rolled materials, characterized in that, include: The base includes a base frame and a support plate fixed on the base frame; Two support frames are rotatably connected to two opposite sides of the base. One support frame includes two vertical support rods and a horizontal connecting rod. The two vertical support rods are respectively connected to both ends of the horizontal connecting rod. At least two limiting portions for restricting the movement of the roll in the roll material are also formed on the support frame. The limiting portions are configured to be substantially at the same height in the support frame. A locking mechanism includes a locking base connected to the base or the support frame and a locking member connected to the locking base and restricting the relative rotation of the support frame. A plane perpendicular to the transverse connecting rod and substantially bisects one of the limiting parts is defined as a plane of symmetry. The distance from the lowest point of the limiting part to the bearing plate is defined as a first distance. The distance between the planes of symmetry of two limiting parts on the same support frame is defined as a second distance. The ratio between the first distance and the second distance ranges from 0.35 to 0.

53.

2. The fixing device according to claim 1, characterized in that: The first distance ranges from 230mm to 300mm, and the second distance ranges from 490mm to 640mm.

3. The fixing device according to claim 1, characterized in that: The support frame further includes a support member, which is fixedly connected to the upper surface of the transverse connecting rod, and the support member forms the limiting portion; or The fixing device further includes a limiting frame that can cooperate with the transverse connecting rod to form the limiting portion, the limiting frame being configured to be rotatably connected to the support frame or the limiting frame being configured to be detachably connected to the transverse connecting rod.

4. The fixing device according to claim 3, characterized in that: The cross-sectional shape of the limiting part is at least one of the following: V-shape, V-shaped derivative, arc shape, arc-shaped derivative, or rectangle.

5. The fixing device according to claim 4, characterized in that: When the cross-sectional shape of the limiting part is an arc or a derivative of the arc, the range of the central angle corresponding to the arc is 60° to 180°. When the cross-sectional shape of the limiting part is a V-shape or a derivative of the V-shape, the included angle between the two sides ranges from 5° to 75°.

6. The fixing device according to claim 3, characterized in that: The support frame further includes a baffle, which is configured to surround the limiting portion, and the baffle includes a baffle located outside the support.

7. The fixing device according to claim 1, characterized in that: The base is also provided with an outward turning limiter for limiting the outward turning angle of the support frame. When the support frame is turned outward, the angle between the support frame and the vertical plane is in the range of 0° to 90°.

8. The fixing device according to claim 1, characterized in that: The ratio of the height of the support frame to the distance between the two sides of the support frame is in the range of 0.2 to 0.

6.

9. The fixing device according to claim 1, characterized in that: The base frame is basically quadrilateral. The base frame includes at least two oppositely distributed main load-bearing sides and at most two oppositely distributed secondary load-bearing sides. The bottom of one of the main load-bearing sides is provided with at least two load-bearing feet and a load-bearing base plate connecting the load-bearing feet together. The bottom of one of the secondary load-bearing sides is provided with at least two load-bearing feet located near the four corners of the base frame.

10. The fixing device according to claim 1, characterized in that: The base also includes a first positioning part located at the top of the base and a second positioning part located at the bottom of the base and used to cooperate with the first positioning part. The first positioning part is a positioning protrusion and the second positioning part is a positioning groove, or the first positioning part is a positioning groove and the second positioning part is a positioning protrusion. The base includes a first stacking part located on the base. The top of the vertical support rod is provided with a second stacking part for connecting the first stacking part. The first stacking part is a stacking protrusion and the second stacking part is a stacking groove, or the first stacking part is a stacking groove and the second stacking part is a stacking protrusion.

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