A fluent strip barrier structure and fluent library

Abstract

The utility model discloses a kind of fluent strip guardrail structure and fluent library, guardrail structure includes the guardrail pole that interval is arranged along fluent strip conveying direction and the guardrail assembly detachably arranged on guardrail pole, the guardrail assembly includes guardrail plate keel and wear-resistant strip buckle plate, the wear-resistant strip buckle plate is detachably buckled on guardrail plate keel along fluid strip conveying direction, adjusting component for adjusting and positioning the height of guardrail assembly is set on guardrail pole;The wear-resistant strip buckle plate of the guardrail of the utility model is detachably buckled on guardrail plate keel, can flexibly replace buckle plate, the maintenance of conveying line is facilitated, and the height of guardrail assembly can be adjusted according to the material box shape of conveying goods, so that the same fluent strip conveying line meets the conveying demand of different goods products, improve the utilization of conveying line.

Description

Technical Field

[0001] This utility model relates to the field of cargo transportation technology, specifically to a flow railing structure and a flow rail warehouse. Background Technology

[0002] When using gravity flow rails for cargo transport, guardrails need to be installed on both sides to block the cargo and prevent it from deviating from the transport path. During this process, the cargo above may jump out of the container and hit the guardrail surface due to the vibration generated by the container sliding on the gravity flow rail. If the guardrails cannot provide comprehensive protection in the transport direction of the gravity flow rail, the cargo may fall off the conveyor line due to vibration. In addition, different cargo containers mean that the existing fixed guardrail design cannot meet the cargo transport guidance requirements. Utility Model Content

[0003] Technical objective: To address the shortcomings of existing flow rail guardrail structures, this utility model discloses a flow rail guardrail structure and flow rail storage that can be flexibly adjusted according to the structure of the conveyed goods bin, effectively protecting the goods during transport.

[0004] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution:

[0005] A flow strip guardrail structure includes guardrail bars spaced apart along the flow strip conveying direction and guardrail components detachably mounted on the guardrail bars. The guardrail components include guardrail keel and wear-resistant strip buckles. The wear-resistant strip buckles are detachably fastened to the guardrail keel along the flow strip conveying direction. An adjustment component for adjusting and positioning the height of the guardrail components is provided on the guardrail bars.

[0006] Preferably, the upper part of the guardrail keel of this utility model is provided with a groove along the conveying direction of the flow strip, and the wear-resistant strip buckle is provided with a buckle part that cooperates with the groove.

[0007] Preferably, the fastening part of this utility model adopts a figure-7 shaped structure, and a wear-resistant surface is formed on the side near the flow strip for cooperating with the items conveyed by the flow strip for conveying and guiding.

[0008] Preferably, the guardrail of this utility model is a screw rod, and the adjustment component includes fasteners disposed above and below the corresponding guardrail component. The fasteners are threadedly connected to the guardrail rod, and the end face of the fastener near the guardrail component abuts against the guardrail component to press and position the guardrail component. The height of the guardrail component is adjusted by rotating the fasteners above and below the guardrail component.

[0009] Preferably, the guardrail of this utility model is a screw rod, and a driving component for driving the guardrail to rotate is connected to the end of the guardrail rod. The guardrail keel is threadedly connected to the guardrail rod, and the height of the guardrail assembly is adjusted by driving the guardrail rod to rotate through the driving component.

[0010] Preferably, the guardrail of this utility model includes several coaxial slidingly fitted rod segments, the diameter of which gradually decreases from bottom to top. At least one of the sliding rod segments is provided with a guardrail assembly, and the ends of adjacent rod segments are provided with elastic buckles for mutual cooperation. Pulling the corresponding rod segment adjusts the height of the guardrail assembly, and the relative position of adjacent rod segments is restricted by the elastic buckles.

[0011] Preferably, in this invention, the number of guardrail components along the height direction of the guardrail is several groups. Between adjacent guardrail components or non-adjacent guardrail components, several support rod groups are arranged along the conveying direction of the flow strip. Each support rod group includes two support rods arranged in an X shape. The middle parts of the support rods are hinged to each other, and the ends are connected to the guardrail keel of the corresponding guardrail component through roller cooperation. A track for the rollers to roll is provided on the guardrail keel.

[0012] Preferably, the number of guardrail components of this utility model is three sets, corresponding to the upper, middle and lower areas of the side wall of the feed box of the fluidized bed conveyor.

[0013] Preferably, in this invention, along the height direction of the guardrail, the profile formed by the wear-resistant surfaces of a plurality of guardrail components matches the edge profile of the conveyor belt transporting the items.

[0014] Preferably, the wear-resistant surface of this invention is one of a plane, a parabolic arc surface, a wavy surface, or a teardrop-shaped surface.

[0015] Preferably, the surface of the wear-resistant surface of this invention is provided with balls or rollers along the conveying direction of the flow strip to assist in conveying.

[0016] Preferably, when the flow bar conveyor box is a cuboid structure with smooth sidewalls, the wear-resistant surface can be any one of a plane, a parabolic arc surface, a wavy surface, or a teardrop-shaped surface.

[0017] Preferably, when the flow bar conveyor box is an inverted trapezoidal structure with smooth sidewalls, the wear-resistant surface of the guardrail assembly located in the upper region of the box is a flat surface, and the wear-resistant surface of the guardrail assembly located in the middle and lower regions of the box is a curved surface structure adapted to the inclination angle of the sidewall of the box.

[0018] Preferably, the curved surface structure of this utility model is a parabolic arc surface or a teardrop-shaped curved surface.

[0019] Preferably, when the side wall of the flow bar conveyor box has ribs, the wear-resistant surface of the guardrail assembly corresponding to the height area of ​​the ribs adopts a wave-shaped curved surface structure, and the trough area of ​​the wave-shaped curved surface structure corresponds to the ribs.

[0020] Preferably, the wear-resistant strip buckle of this utility model has a cavity at the crest of the wavy curved surface.

[0021] Preferably, the flow bar guardrail structure of this utility model has a guide block at the end of the guardrail assembly along the conveying direction of the flow bar for guiding the entry of items.

[0022] Preferably, the guide block of this utility model adopts a conical structure.

[0023] This utility model discloses a flow rack using the aforementioned flow rack guardrail structure, comprising flow racks, support bars, and flow rack support frame. The support bars are spaced apart on the flow rack support frame along a direction perpendicular to the flow rack's conveying direction, with the ends of the support bars snapped onto the flow rack support frame. Corresponding support bar mounting holes are provided on the flow rack support frame. The guardrail structure is symmetrically arranged on the left and right sides of the flow rack along the flow rack's conveying direction, and the bottom of the guardrail structure is connected to the support bars via guardrail rods.

[0024] Beneficial effects: The flow-through strip guardrail structure and flow-through garage provided by this utility model have the following beneficial effects:

[0025] 1. The wear-resistant strip buckle of this utility model guardrail can be detachably fastened to the guardrail keel, allowing for flexible replacement of the buckle, facilitating the maintenance of the conveyor line. At the same time, the height of the guardrail assembly can be adjusted according to the shape of the material box being conveyed, enabling the same flow strip conveyor line to meet the conveying needs of different products and improving the utilization rate of the conveyor line.

[0026] 2. The wear-resistant strip buckle of this utility model can be integrally processed and molded using polymer materials, which meets the protection requirements of long-distance conveyor lines and overcomes the problem of gaps in the buckle joints of existing technologies, which can cause goods to get caught at the joints during use.

[0027] 3. The guardrail keel and guardrail rod of this utility model guardrail assembly are connected by threaded engagement. The height of the guardrail assembly can be automatically adjusted by driving the guardrail rod to rotate through the drive component, thereby improving the degree of automation and facilitating operation.

[0028] 4. The guardrail assembly of this utility model is provided with support rod groups between the supports. The X-shaped design of the support rod groups can enhance the overall structural strength of the guardrail and maintain the connection with the guardrail assembly even when the relative distance between the guardrail assemblies changes, without affecting the height adjustment of the guardrail assembly according to the shape of the conveyor box.

[0029] 5. The guardrail assembly of this utility model is arranged in several groups along the height of the guardrail. The shape of the wear-resistant surface can be changed and adjusted according to the shape of the material box to keep the material box running along the guardrail and prevent the material box from slipping.

[0030] 6. This utility model provides a guide block at the end of the guardrail assembly for guiding, so that the material box can smoothly enter and exit the flow bar silo. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0032] Figure 1 This is a schematic diagram of the overall structure of the guardrail of this utility model;

[0033] Figure 2 This is a schematic diagram of the structure of the wear-resistant strip buckle plate and the guardrail keel of this utility model;

[0034] Figure 3 This is a schematic diagram of the cooperation between the guardrail and the adjustment component in Embodiment 1 of this utility model;

[0035] Figure 4 This is a schematic diagram of the cooperation between the guardrail and the adjustment component in Embodiment 2 of this utility model;

[0036] Figure 5 This is a schematic diagram of the guardrail structure in Embodiment 3 of this utility model;

[0037] Figure 6 This is a schematic diagram of the wear-resistant surface of the planar structure of this utility model;

[0038] Figure 7 This is a schematic diagram of the parabolic arc-shaped wear-resistant surface of this utility model;

[0039] Figure 8 This is a schematic diagram of the wavy curved wear-resistant surface of this utility model;

[0040] Figure 9 This is a schematic diagram of the cylindrical wear-resistant surface of this utility model;

[0041] Figure 10 This is a schematic diagram of the teardrop-shaped curved wear-resistant surface of this utility model;

[0042] Figure 11 A schematic diagram showing the arrangement of balls or rollers on the wear-resistant surface of this utility model;

[0043] Figure 12 These are schematic diagrams showing different shapes of material boxes according to this utility model;

[0044] Figure 13 This is a structural diagram of the flow library of this utility model;

[0045] Figure 14 This is a cross-sectional view of the flow-through warehouse of this utility model along the location of the cargo support;

[0046] Figure 15 This is a perspective view of the cargo support of this utility model;

[0047] Figure 16 This is a schematic diagram of the side structure of the cargo support of this utility model;

[0048] Among them, 1-guardrail, 2-guardrail keel, 3-wear-resistant strip buckle, 4-slot, 5-fastener, 6-wear-resistant surface, 7-fastener, 8-drive component, 9-pole section, 10-elastic buckle, 11-support rod, 12-guide block, 13-cavity, 14-flow strip, 15-cargo support, 16-flow rack bracket, 17-cargo support mounting hole. Detailed Implementation

[0049] Reference will now be made in detail to embodiments of the present disclosure, one or more of which are set forth herein. Each embodiment and example is provided by way of explanation of the apparatus, composition, and materials of the present disclosure, and not by way of limitation. Rather, the following description provides convenient illustrations for implementing exemplary embodiments of the present disclosure. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made to the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0050] like Figure 1 and Figure 2 As shown, this utility model discloses a flow strip guardrail structure, including guardrail bars 1 spaced apart along the flow strip conveying direction and guardrail components detachably mounted on the guardrail bars 1. The guardrail components include guardrail keel 2 and wear-resistant strip buckle plates 3. The wear-resistant strip buckle plates 3 are detachably fastened to the guardrail keel 2 along the flow strip conveying direction. An adjustment component for adjusting and positioning the height of the guardrail components is provided on the guardrail bars 1.

[0051] The guardrail keel 2 is made of high-strength aluminum plate to provide sufficient support for the wear-resistant strip buckle 3, preventing deformation from collisions with the box or goods. The upper part of the guardrail keel 2 has a groove 4 along the conveyor belt direction. The wear-resistant strip buckle 3 has a corresponding fastening part 5 that mates with the groove 4. The fastening part 5 has a 7-shaped structure, with a wear-resistant surface 6 on the side near the conveyor belt for guiding the conveyed items. The wear-resistant strip buckle 3 is made of wear-resistant polymer material and is designed according to the conveyor belt conveyor direction. The length of the line is integrally formed and snapped onto the guardrail keel 2. Different wear-resistant strip buckles 3 can be made according to requirements. Along the conveying direction of the flow strip, the flow strip guardrail structure has guide blocks 12 at the ends of the guardrail components to guide the entry of items. The guide blocks 12 guide the material box into and out of the flow strip conveyor line. The material box does not need to be accurately aligned when placed. During the conveying process, it can be gradually guided into the guardrail by the guide blocks 12. In the embodiment of this utility model, the guide blocks 12 adopt a conical structure.

[0052] like Figure 12 As shown, the material boxes on the same flow strip conveyor line will vary in length, width, and shape. For example, when the material box is a cuboid, the change in the width direction of the material box can be directly addressed by replacing the wear-resistant strip plate 3 with one of different thicknesses to ensure that the wear-resistant surface 6 contacts the side wall of the material box, thus guiding the movement of the material box. When the height of the material box and the shape of the side wall of the material box change, the position of the corresponding guardrail components also needs to be adjusted accordingly.

[0053] To facilitate adjustment while ensuring the structural strength of the guardrail, such as Figures 3-5 As shown, this utility model provides three embodiments for adjusting the height of guardrail components, but it is not limited to the adjustment component structure provided in this application. Without departing from the design concept of this utility model, those skilled in the art can replace the adjustment component scheme of this application with other existing methods that can realize the raising and lowering of guardrail components, and they are still within the protection scope of this application.

[0054] In Embodiment 1, the guardrail 1 of this utility model is a screw, and the adjustment component includes fasteners 7 disposed above and below the corresponding guardrail components. The fasteners 7 are threadedly connected to the guardrail 1, and the end face of the fastener 7 near the guardrail component abuts against the guardrail component to press and position the guardrail component. The height of the guardrail component is adjusted by rotating the fasteners 7 above and below the guardrail component. The method of positioning and adjusting the height of the guardrail component using fasteners 7 is highly reliable. However, since each fastener 7 needs to be turned individually for adjustment, the adjustment efficiency will be affected when there are a large number of guardrails that need to be adjusted.

[0055] Embodiment 2 of this utility model further optimizes the connection structure of Embodiment 1. The guardrail 1 is still a screw, and the guardrail keel 2 is directly connected to the guardrail 1 by a threaded engagement. The threaded engagement structure is used for limiting and height adjustment. A drive component 8 for driving the guardrail 1 to rotate is connected to the end of the guardrail 1. The height of the guardrail assembly is adjusted by driving the guardrail 1 to rotate through the drive component 8. The drive component 8 can be implemented by a stepper motor or other equipment. Embodiment 2 of this utility model can automatically realize the height adjustment of the guardrail assembly, thereby improving the line changing efficiency.

[0056] In embodiment 3 of this utility model, the guardrail 1 includes several coaxially slidingly fitted rod segments 9, the diameter of which gradually decreases from bottom to top. At least one of the slidable rod segments 9 is provided with a guardrail assembly. The ends of adjacent rod segments 9 are provided with elastic buckles 10 for mutual cooperation. Pulling the corresponding rod segment 9 adjusts the height of the guardrail assembly. The relative position of adjacent rod segments is restricted by the elastic buckles 10. This method can achieve a large range of height adjustment. Furthermore, when the height of the guardrail assembly is low, the height of the guardrail itself will also be adjusted synchronously, which can shorten the space occupied by the structure.

[0057] For situations requiring multiple sets of guardrail components, this invention provides several support rod groups along the height direction of the guardrail bar, between adjacent or non-adjacent guardrail components, arranged along the conveying direction of the flow strip. Each support rod group includes two support rods 11 arranged in an X-shape, hinged together at their middle sections, and connected to the guardrail panel keel 2 of the corresponding guardrail component via rollers at their ends. Tracks for the rollers are provided on the guardrail panel keel 2. When the height between guardrail components changes, the support rods 11 of the corresponding support rod group rotate around the hinge point, synchronously adjusting the spacing. This achieves the goal of enhancing the overall structural strength of the guardrail while satisfying the height adjustment function of the guardrail components. Using this guardrail structure, adjustment is simple and highly flexible, meeting the conveying and guiding needs of different types of material boxes and ensuring smooth transport of goods.

[0058] In an embodiment of this utility model, the number of guardrail components is preferably three sets, corresponding to the upper, middle and lower areas of the material box respectively. When the height of the material box changes, the position of the guardrail components in the lower area remains unchanged, and the height of the guardrail components corresponding to the middle and upper areas can be adjusted synchronously with the change of the material box.

[0059] For a material box whose sidewall shape is not a vertical plane, the profile of the wear-resistant surface 6 of several guardrail components can be set to match the edge profile of the conveyor belt conveyed along the height direction of the guardrail 1.

[0060] like Figures 6-10As shown, this utility model provides several specific application examples of the wear-resistant surface 6 to ensure that it can cope with the conveying guidance of different material box shapes. The shape of the wear-resistant surface 6 can be one of a plane, a parabolic arc surface, a wavy curved surface, or a teardrop-shaped curved surface, wherein... Figure 9 The cylindrical wear-resistant surface shown can be considered a deformation of a wavy curved surface; to reduce friction and extend the life of the guardrail components, such as... Figure 11 As shown, the wear-resistant surface 6 of this utility model is provided with balls or rollers along the conveying direction of the flow strip to assist in conveying.

[0061] The following describes the shape of the wear-resistant surface used in conjunction with the specific shape of the material box. When the flow bar conveyor material box is a rectangular structure with smooth side walls, the wear-resistant surface 6 can be any one of a plane, a parabolic arc surface, a wavy curved surface, or a teardrop-shaped curved surface.

[0062] When the feed box of the flow bar conveyor is an inverted trapezoidal structure with smooth side walls, the wear-resistant surface 6 of the guardrail assembly located in the upper area of ​​the feed box is a plane, and the wear-resistant surface 6 of the guardrail assembly located in the middle and lower areas of the feed box is a curved surface structure that matches the inclination angle of the side wall of the feed box; the curved surface structure is a parabolic arc surface or a teardrop-shaped curved surface.

[0063] When the side wall of a flow bar conveyor hopper has ribs, the ribs will protrude from the side wall of the hopper. It is necessary to maintain contact between the wear-resistant surface 6 and the side wall of the hopper while avoiding obstruction by the ribs. In this case, for a hopper with a single rib, the wear-resistant surface 6 of the guardrail assembly corresponding to the height area of ​​the rib should adopt the following... Figure 8 The wavy curved surface structure shown has troughs corresponding to ribs. Preferably, the wear-resistant strip plate 3 has cavities 13 at the crests of the wavy surface, allowing the crest height to vary to accommodate rib structures of different widths. This also accommodates dimensional deviations between hoppers of the same type, reducing wear between the hopper and the wear-resistant surface 6.

[0064] like Figures 13-16 As shown, this utility model also discloses a flow chute using the aforementioned flow bar guardrail structure, including flow bars 14, support bars 15, and flow chute support 16. The support bars 15 are spaced apart on the flow chute support 16 along a direction perpendicular to the flow bar's conveying direction, with their ends snapped onto the flow chute support 16. Support bar mounting holes 17 are correspondingly provided on the flow chute support 16. The guardrail structure is symmetrically arranged on the left and right sides of the flow bar 14 along its conveying direction. The bottom of the guardrail structure is connected to the support bars 15 via guardrail rods 1. By using the guardrail structure of this utility model, the stable and smooth conveying requirements of various material boxes within the flow chute can be met.

Claims

1. A smooth strip guardrail structure, characterized in that, The system includes guardrails (1) spaced apart along the fluid strip conveying direction and guardrail components detachably mounted on the guardrails (1). The guardrail components include guardrail keel (2) and wear-resistant strip buckle (3). The wear-resistant strip buckle (3) is detachably fastened to the guardrail keel (2) along the fluid strip conveying direction. An adjustment component for adjusting and positioning the height of the guardrail components is provided on the guardrails (1).

2. The smooth strip guardrail structure according to claim 1, characterized in that, The upper part of the guardrail keel (2) is provided with a slot (4) along the conveying direction of the smooth strip, and the wear-resistant strip buckle (3) is provided with a buckle part (5) that cooperates with the slot (4).

3. The smooth strip guardrail structure according to claim 2, characterized in that, The fastening part (5) adopts a 7-shaped structure, and a wear-resistant surface (6) is formed on the side near the flow bar to cooperate with the side wall of the material box for conveying and guiding.

4. The smooth strip guardrail structure according to claim 3, characterized in that, The guardrail (1) is a screw rod. The adjustment component includes fasteners (7) set above and below the corresponding guardrail component. The fasteners (7) are threadedly connected to the guardrail (1). The end face of the fastener (7) near the guardrail component abuts against the guardrail component to press and position the guardrail component. The height of the guardrail component is adjusted by rotating the fasteners (7) above and below the guardrail component.

5. A smooth strip guardrail structure according to claim 3, characterized in that, The guardrail (1) is a screw rod, and a drive component (8) for driving the guardrail (1) to rotate is connected to the end of the guardrail (1). The guardrail keel (2) is threadedly connected to the guardrail (1). The height of the guardrail assembly is adjusted by driving the guardrail (1) to rotate through the drive component (8).

6. The smooth strip guardrail structure according to claim 3, characterized in that, The guardrail (1) includes several coaxial sliding segments (9), the diameter of which gradually decreases from bottom to top. At least one of the sliding segments (9) is provided with a guardrail assembly. The ends of adjacent segments (9) are provided with elastic buckles (10) for mutual cooperation. Pulling the corresponding segment (9) adjusts the height of the guardrail assembly. The relative position of adjacent segments is restricted by the elastic buckles (10).

7. The smooth strip guardrail structure according to any one of claims 4-6, characterized in that, Along the height direction of the guardrail (1), there are several groups of guardrail components. Between adjacent guardrail components or non-adjacent guardrail components, several support rod groups are set along the conveying direction of the flow strip. The support rod group includes two support rods (11) arranged in an X shape. The middle part of the support rods (11) is hinged to each other, and the end is connected to the guardrail keel (2) of the corresponding guardrail component through roller cooperation. A track for the roller to roll is set on the guardrail keel (2).

8. A smooth strip guardrail structure according to claim 7, characterized in that, The number of guardrail components is three sets, corresponding to the upper, middle and lower areas of the side wall of the feed box of the fluidized bed conveyor.

9. A smooth strip guardrail structure according to claim 7, characterized in that, Along the height direction of the guardrail (1), the profile of the wear-resistant surface (6) of several guardrail components matches the edge profile of the flow strip conveying the items.

10. A smooth strip guardrail structure according to claim 9, characterized in that, The wear-resistant surface (6) is one of the following shapes: a plane, a parabolic arc surface, a wavy surface, or a teardrop-shaped surface.

11. A smooth strip guardrail structure according to claim 10, characterized in that, The wear-resistant surface (6) is provided with balls or rollers along the conveying direction of the flow strip to assist in conveying.

12. A smooth strip guardrail structure according to claim 10, characterized in that, When the flow bar conveyor box is a rectangular structure with smooth side walls, the wear-resistant surface (6) can be any one of a plane, a parabolic arc surface, a wavy surface or a teardrop-shaped surface.

13. A smooth strip guardrail structure according to claim 10, characterized in that, When the flow bar conveyor box is an inverted trapezoidal structure with smooth side walls, the wear-resistant surface (6) of the guardrail assembly located in the upper area of ​​the box is flat, and the wear-resistant surface (6) of the guardrail assembly located in the middle and lower areas of the box is a curved surface structure that matches the inclination angle of the side wall of the box.

14. A smooth strip guardrail structure according to claim 13, characterized in that, The curved surface structure is a parabolic arc surface or a teardrop-shaped curved surface.

15. A smooth strip guardrail structure according to claim 10, characterized in that, When the side wall of the flow bar conveyor box has ribs, the wear-resistant surface (6) of the guardrail assembly corresponding to the height area of ​​the rib adopts a wave-shaped curved surface structure, and the trough area of ​​the wave-shaped curved surface structure corresponds to the rib.

16. A smooth strip guardrail structure according to claim 15, characterized in that, The wear-resistant strip panel (3) has a cavity (13) at the crest of the wavy surface.

17. A smooth strip guardrail structure according to claim 1, characterized in that, Along the conveying direction of the flow bar, the flow bar guardrail structure has a guide block (12) at the end of the guardrail assembly for guiding the entry of items.

18. A smooth strip guardrail structure according to claim 17, characterized in that, The guide block (12) has a conical structure.

19. A flow-through library, using the flow-through strip guardrail structure as described in any one of claims 1-18, characterized in that, It includes a flow bar (14), a support (15) and a flow storage bracket (16). The support (15) is spaced on the flow storage bracket (16) along the direction perpendicular to the flow bar. The end of the support (15) is snapped onto the flow storage bracket (16). The flow storage bracket (16) is provided with a corresponding support mounting hole (17). The guardrail structure is symmetrically arranged on the left and right sides of the flow bar (14) along the direction of the flow bar (14). The bottom of the guardrail structure is connected to the support (15) through a guardrail rod (1).

Images