Truck side guardrail assembly capable of being flexibly adjusted in multiple directions

Abstract

The invention is suitable for the technical field of vehicle accessories, and provides a multidirectional flexibly-adjusted truck side guardrail assembly which comprises a fixed fence support and an overhaul fence support which are installed on the lower portion of a truck body, a fixed base fence is fixedly installed on the fixed fence support, and the left end and the right end of the fixed base fence are rotationally connected with a crawling ladder side fence frame and an overhaul side fence frame respectively. The fixed base fence, the crawling ladder side fence frame and the overhauling side fence frame jointly form a side fence of the truck to protect the side portion of the truck, the crawling ladder side fence frame and the overhauling side fence frame can be overturned to the outer side of the fixed base fence when needed, the original positions are vacated, and after the position of the overhauling side fence frame is vacated, the bottom of the truck can be overhauled conveniently. In the overturning process of the crawling ladder side barriers, the folding type multi-section crawling ladder originally located on the inner sides of the crawling ladder side barriers can be brought out to one side of the truck body, and after the folding type multi-section crawling ladder is unfolded, the folding type multi-section crawling ladder can conveniently enter a truck warehouse from the ground.

Description

Technical Field

[0001] The invention is applicable to the technical field of vehicle accessories and provides a truck side guardrail assembly that is flexibly adjustable in multiple directions. Background Art

[0002] Trucks, especially heavy trucks, have a high chassis, so there is usually a large gap between the rear cargo compartment of the truck and the ground. In order to protect other vehicles and pedestrians on the road, side guardrails are usually added to the sides of the truck to prevent the side of the truck from being rolled into the bottom of the truck and causing danger. However, the side guardrails of trucks are usually fixed, and in order to achieve better protection, the bottom of the side guardrails is generally close to the ground, so when the bottom of the truck needs to be inspected, it is difficult for maintenance personnel to enter. At the same time, some heavy trucks, especially the attached Figure 1 The high-bar truck shown in the figure has a relatively high side railing of the cargo hold. When entering the cargo hold, additional height is required. At this time, some drivers will directly climb with the help of the side guardrails. However, since the highest point of the side guardrail is still a certain distance from the cargo hold side railing, this method has certain safety risks. Some trucks choose to add a ladder on the side to achieve the climbing function, but in this structure, the position of the ladder and the side guardrail will conflict. The ladder is easily damaged if it is exposed to the outside of the truck for a long time, and the side protection of the truck will also be weakened. Summary of the invention

[0003] To this end, the present invention provides a truck side guardrail assembly that is flexibly adjustable in multiple directions, and is provided with a flippable maintenance side guardrail frame. When bottom maintenance is required, a passage is opened on the side of the truck by flipping the maintenance side guardrail frame, which is convenient for maintenance personnel to enter. At the same time, a flippable ladder side guardrail frame is also provided on the other side. By flipping the ladder side guardrail frame, a foldable multi-section ladder can be pulled out for use or pushed into the rear side of the ladder side guardrail frame for storage and protection as needed.

[0004] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a multi-directional and flexible adjustable truck side guardrail assembly, comprising:

[0005] A fixed fence bracket, comprising a fixed fence body connecting plate, the fixed fence body connecting plate is used to be connected to the truck frame, and the fixed fence body connecting plate is connected to a fixed fence mounting frame;

[0006] A maintenance fence bracket, comprising a maintenance fence body connecting plate, the maintenance fence body connecting plate is used to be connected to the truck frame, and the maintenance fence body connecting plate is connected to the maintenance fence mounting frame;

[0007] A fixed base fence, wherein the fixed side fence frame is fixedly connected to the fixed fence mounting frame;

[0008] Ladder side railing frame and maintenance side railing frame, the left and right ends of the fixed base rail are rotatably connected to the ladder side railing frame and the maintenance side railing frame respectively, the maintenance side railing frame is detachably fixedly connected to the maintenance railing mounting frame, and the ladder side railing frame is rotatably connected to a ladder drive rod;

[0009] A foldable multi-section ladder, wherein both ends of the ladder drive rod are rotatably connected to the foldable multi-section ladder and the ladder side railing, respectively; the foldable multi-section ladder comprises a ladder base, a fixed ladder section and a telescopic ladder section, wherein the fixed ladder section is fixedly connected to the ladder base, and the telescopic ladder section is slidably connected to the fixed ladder section;

[0010] The elastic support rod is used to connect the truck frame and the foldable multi-section ladder. The two ends of the elastic support rod are rotatably connected to the truck frame and the foldable multi-section ladder respectively.

[0011] Furthermore, the foldable multi-section ladder also includes a transition platform, one end of which is rotatably connected to the ladder base, and the other end of which is rotatably connected to a grounding ladder section.

[0012] Furthermore, the ladder base includes a first limit plate and a second limit plate, and the transition platform can be stopped by the first limit plate and the second limit plate respectively during the rotation process.

[0013] Furthermore, there are two ladder driving rods, which are arranged in parallel up and down, and there are two elastic support rods, which are arranged in parallel left and right. The telescopic parts of the two elastic support rods are rotatably connected to the left and right side parts of the fixed ladder section respectively.

[0014] Furthermore, the elastic support rod is a pneumatic support rod.

[0015] Furthermore, the fixed base rail is provided with at least one side rail temporary fixing unit, the side rail temporary fixing unit includes an elastically retractable side rail temporary fixing shaft, the side rail fixing shaft is provided with a rotatable side rail temporary blocking block, and the ladder side rail frame and the maintenance side rail frame are both provided with side rail fixing holes that are compatible with the side rail temporary blocking blocks.

[0016] Furthermore, the inspection fence mounting frame is provided with an inspection fence back pressure block on the side facing the inspection side fence frame, and the inspection fence back pressure block is detachably connected with an inspection fence fixing block, and the number of the inspection fence back pressure block and the inspection fence fixing block matches the number of the side fence fixing holes on the inspection side fence frame;

[0017] Furthermore, the fixed fence body connecting plate is provided with a plurality of fixed fence adjustment waist holes, the fixed fence mounting frame is provided with a plurality of fixed fence mounting frame connecting holes matched with the plurality of fixed fence adjustment waist holes, the fixed fence body connecting plate and the fixed fence mounting frame are detachably fixedly connected together by a bolt fastening mechanism that passes through the fixed fence adjustment waist holes and the fixed fence mounting frame connecting holes respectively, the fixed fence mounting frame is detachably connected with a plurality of fixed fence connecting blocks, and the fixed base fence is provided with an array of fixed fence limiting flanges matched with the fixed fence connecting blocks on the side facing the fixed fence mounting frame.

[0018] Furthermore, the inspection fence body connecting plate is provided with a plurality of inspection fence adjustment waist holes, and the inspection fence mounting frame is provided with a plurality of inspection fence mounting frame connecting holes matched with the plurality of inspection fence adjustment waist holes. The inspection fence body connecting plate and the inspection fence mounting frame are detachably and fixedly connected together by a bolt fastening mechanism that passes through the inspection fence adjustment waist holes and the inspection fence mounting frame connecting holes respectively.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. A flippable inspection side fence is provided on one side of the fixed base fence. When the vehicle is in normal use, the inspection side fence is detachably fixed on the inspection fence bracket to protect the side of the vehicle body. When the bottom of the vehicle needs to be inspected, the inspection side fence can be flipped to the outside of the fixed base fence, so that the maintenance personnel can enter the bottom of the vehicle from the position vacated after the inspection side fence is flipped for easy inspection;

[0021] 2. A reversible ladder side rail frame is arranged on one side of the fixed base rail. The ladder side rail frame can drive the foldable multi-section ladder to move while reversing. In the process of the ladder side rail frame flipping from one side of the fixed base rail to the front of the fixed base rail, the ladder side rail frame can drive the foldable multi-section ladder to move from the rear of the ladder side rail frame to the outside of the truck. After the foldable multi-section ladder is unfolded, the operator can easily move from the ground to the truck cargo hold. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a multi-directional flexibly adjustable truck side guardrail assembly installed on one side of a truck body mentioned in the present invention when both the ladder side guardrail frame and the maintenance side guardrail frame are unfolded;

[0023] Figure 2 for Figure 1 A schematic structural diagram of a multi-directionally flexibly adjustable truck side guardrail assembly when both a ladder side guardrail frame and an inspection side guardrail frame are unfolded;

[0024] Figure 3 for Figure 2 A local enlarged schematic diagram of the middle A;

[0025] Figure 4 for Figure 2 A schematic diagram of a top view structure of a truck side guardrail assembly with multi-directional flexibility adjustment when both the ladder side guardrail frame and the maintenance side guardrail frame are unfolded;

[0026] Figure 5 It is a structural schematic diagram of a multi-directional flexibly adjustable truck side guardrail assembly installed on one side of a truck body mentioned in the present invention when the ladder side guardrail frame is flipped and folded and the foldable multi-section ladder is unfolded;

[0027] Figure 6 for Figure 5 A schematic top view of a multi-directional flexibly adjustable truck side guardrail assembly when a ladder side guardrail frame is flipped and folded and a foldable multi-section ladder is unfolded;

[0028] Figure 7 It is a structural schematic diagram of a multi-directional flexibly adjustable truck side guardrail assembly installed on one side of a truck body mentioned in the present invention when the side guardrail frame for maintenance is flipped and folded;

[0029] Figure 8 for Figure 7 A schematic diagram of the structure of a truck side guardrail assembly with multi-directional flexibility adjustment when the side guardrail frame is flipped and folded for maintenance;

[0030] Fig. 9 It is a structural schematic diagram of the fixed fence bracket mentioned in the present invention;

[0031] Fig.10 It is a structural schematic diagram of the maintenance fence bracket mentioned in the present invention;

[0032] Fig.11 It is a structural schematic diagram of the foldable multi-section ladder of the maintenance fence bracket mentioned in the present invention in a folded and stored state;

[0033] Fig.12 It is a structural schematic diagram of the foldable multi-section ladder of the maintenance fence bracket mentioned in the present invention in the unfolded state.

[0034] In the figure:

[0035] 100, fixed rail bracket, 110, fixed rail body connecting plate, 120, fixed rail mounting frame, 130, fixed rail connecting block;

[0036] 200, fixed base fence, 210, temporary fixing unit of side fence, 211, temporary fixing shaft of side fence, 212, temporary clamping block of side fence;

[0037] 300, ladder side rail, 310, ladder drive rod;

[0038] 400. Repair side rails;

[0039] 500, foldable multi-section ladder, 510, ladder base, 520, transition platform, 530, grounding ladder section, 540, fixed ladder section, 550, telescopic ladder section;

[0040] 600, maintenance fence bracket, 610, maintenance fence body connecting plate, 620, maintenance fence mounting frame, 630, maintenance fence back pressure block, 640, maintenance fence fixing block;

[0041] 700, truck body, 710, cargo hold side rail, 720, truck frame,;

[0042] 800. Elastic support rod. DETAILED DESCRIPTION

[0043] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0044] For example, see the attached Figure 2 , Attachment Figure 4 As shown, the present invention is a multi-directional and flexible truck side guardrail assembly, comprising a fixed guardrail bracket 100 mounted on the lower part of a truck body 700 and a maintenance guardrail bracket 600, wherein the fixed guardrail bracket 100 comprises a fixed guardrail body connecting plate 110, the fixed guardrail body connecting plate 110 is used to connect with a truck frame 720, and the fixed guardrail body connecting plate 110 is connected to a fixed guardrail mounting frame 120, as shown in the attached Fig. 9 As shown, the fixed fence body connecting plate 110 is provided with a plurality of fixed fence adjusting waist holes, and the fixed fence mounting frame 120 is provided with a plurality of fixed fence mounting frame 120 connecting holes adapted to the plurality of fixed fence adjusting waist holes. The fixed fence body connecting plate 110 and the fixed fence mounting frame 120 are detachably fixedly connected together by a bolt fastening mechanism that passes through the fixed fence adjusting waist holes and the fixed fence mounting frame 120 connecting holes respectively. The fixed fence mounting frame 120 is installed with a fixed base fence 200. The design of the fixed fence adjusting waist holes can adjust the extension distance of the fixed fence mounting frame 120 within a certain range, and thus can adjust the extension distance of the fixed base fence 200. The design has a wider applicability. The number of fixed fence brackets 100 depends on the length of the fixed base fence 200. Generally, the same fixed base fence 200 will be used in conjunction with several fixed fence brackets 100 arranged in parallel. The fixed fence mounting frame 120 is detachably connected with several fixed fence connecting blocks 130. The fixed base fence 200 is provided with an array of fixed fence limiting flanges adapted to the fixed fence connecting blocks 130 on the side facing the fixed fence mounting frame 120. When the fixed base fence 200 is installed on the fixed fence mounting frame 120, the fixed fence limiting flanges are pressed against the side of the fixed fence mounting frame 120 by the fixed fence connecting blocks 130, thereby completing the fixing of the fixed base fence 200.

[0045] The left and right ends of the fixed base fence 200 are respectively rotatably connected with the ladder side fence frame 300 and the maintenance side fence frame 400. The fixed base fence 200 is provided with at least one side fence temporary fixing unit 210. In this embodiment, two side fence temporary fixing units 210 are arranged at intervals up and down to ensure the stability of temporary fixing. Figure 3 As shown, the side rail temporary fixing unit 210 includes a side rail temporary fixing shaft 211 that can be elastically extended, and the side rail fixing shaft is provided with a rotatable side rail temporary clamping block 212. The ladder side rail frame 300 and the maintenance side rail frame 400 are both provided with side rail fixing clamping holes that are compatible with the side rail temporary clamping block 212. When the ladder side rail frame 300 or the maintenance side rail frame 400 is flipped to the outside of the fixed base rail 200, the side rail temporary clamping block 212 is rotated and pulled so that the angle of the side rail temporary clamping block 212 can pass through the side rail fixing clamping hole, so that the side rail temporary clamping block 212 can pass through the ladder side rail frame 300 or the maintenance side rail frame 400. After the side rail fixing hole passes through the ladder side rail frame 300 or the maintenance side rail frame 400, the angle of the side rail temporary clamping block 212 is rotated again so that the side rail temporary clamping block 212 and the side rail fixing clamping hole are staggered and cannot pass through. At this time, the side rail temporary clamping block 212 is released, and under the action of the elastically retractable side rail temporary fixing shaft 211, the side rail temporary clamping block 212 can be pressed on the surface of the ladder side rail frame 300 or the maintenance side rail frame 400 to form a temporary fixation. This structure is more convenient to operate when in use, and avoids the ladder side rail frame 300 or the maintenance side rail frame 400 from being unable to be fixed when flipped or the fixing method is too cumbersome;

[0046] At the same time, the maintenance side fence frame 400 is also provided with a maintenance fence bracket 600, which is arranged in parallel with the fixed fence bracket 100 and has a similar structure. Fig.10As shown, the inspection fence body connecting plate 610 includes a maintenance fence body connecting plate 610, which is also used to connect with the truck frame 720. The inspection fence body connecting plate 610 is connected with the inspection fence mounting frame 620. The inspection fence body connecting plate 610 is provided with a plurality of inspection fence adjustment waist holes. The inspection fence mounting frame 620 is provided with a plurality of inspection fence mounting frame 620 connecting holes adapted to the plurality of inspection fence adjustment waist holes. The inspection fence body connecting plate 610 and the inspection fence mounting frame 620 are detachably fixedly connected together by a bolt fastening mechanism that passes through the inspection fence adjustment waist holes and the inspection fence mounting frame 620 connecting holes respectively. The inspection fence adjustment waist holes are also used to adjust the extension distance of the inspection side fence frame 400 to adapt to the extension distance of the fixed base fence 200. The difference is that the inspection side fence frame 400 and the inspection fence The fence mounting frames 620 are installed in a detachable connection manner, and the specific structure is as follows: the inspection fence mounting frame 620 is provided with an inspection fence back pressure block 630 facing the inspection side fence frame 400, and the inspection fence back pressure block 630 is detachably connected with the inspection fence fixing block 640, through which the inspection fence fixing block 640 can pass through the side fence fixing hole on the inspection side fence frame 400 from the back of the inspection side fence frame 400, and then be rotated to be clamped on the front of the inspection side fence frame 400, and finally the inspection fence fixing block 640 is pressed by a connecting mechanism such as a bolt fastening mechanism, at which time the inspection fence back pressure block 630 abuts against the back of the inspection side fence frame 400, so that the inspection side fence frame 400 can be fixedly connected to the inspection fence mounting frame 620, and this front pressing method is also convenient for releasing the fixation;

[0047] The ladder side railing 300 is rotatably connected to a ladder driving rod 310, and both ends of the ladder driving rod 310 are rotatably connected to the foldable multi-section ladder 500 and the ladder side railing 300, respectively, for driving the foldable multi-section ladder 500. In this embodiment, for the sake of driving stability, there are two ladder driving rods 310, and the two ladder driving rods 310 are arranged in parallel up and down. The foldable multi-section ladder 500 is connected to the truck frame 720 through an elastic strut 800. In order to ensure stable connection, this embodiment adopts a structure in which two elastic struts 800 are arranged in parallel left and right, and the elastic strut 800 adopts a pneumatic strut in this embodiment, and the elastic strut 800 can The foldable multi-section ladder 500 is provided with a guiding and suppressing force. When the ladder side railing 300 is unfolded to one side of the fixed base railing 200, the foldable multi-section ladder 500 is in a folded and stored state. At this time, the foldable multi-section ladder 500 is located below the truck body 700. The ladder side railing 300 provides protection for the foldable multi-section ladder 500 on the outside. When the ladder side railing 300 is flipped to the outside of the fixed base railing 200, the foldable multi-section ladder 500 is driven by the ladder driving rod 310 to move from the position below the truck body 700 to the outside of the truck body 700. At this time, the foldable multi-section ladder 500 can be unfolded and used, as shown in the attached figure. Fig.11 , Attachment Fig.12As shown, the foldable multi-section ladder 500 includes a ladder base 510, a transition platform 520, a grounding ladder section 530, a fixed ladder section 540 and a telescopic ladder section 550, the fixed ladder section 540 is fixedly connected to the ladder base 510, the telescopic ladder section 550 is slidably connected to the fixed ladder section 540, one end of the transition platform 520 is rotatably connected to the ladder base 510, and the other end is rotatably connected to the grounding ladder section 530, the ladder base 510 includes a first limit plate and a second limit plate, the transition platform 520 can be stopped by the first limit plate and the second limit plate during the rotation process, the first limit plate and the second limit plate are used to control the rotation angle of the transition platform 520, and the two limit plates are respectively The angles of the transition platform 520 when it is folded and when it is unfolded correspond to each other. When the transition platform 520 is folded, it is roughly parallel to the fixed ladder section 540, and when it is unfolded, it is parallel to the horizontal plane. At the same time, when it is unfolded, the grounding ladder section 530 can connect the transition platform 520 and the ground. When the foldable multi-section ladder 500 is folded, the fixed ladder section 540 is generally equivalent to the height of the ladder side railing 300, and the telescopic ladder section 550 can be raised to the upper edge of the cargo hold side rail 710 when the foldable multi-section ladder 500 is in use. In this way, the operator can enter the vehicle cargo hold from the ground through the grounding ladder section 530, the transition platform 520, the fixed ladder section 540 and the telescopic ladder section 550 in sequence, which is convenient to use.

[0048] The working principle of this embodiment is as follows:

[0049] Under normal driving conditions of the truck, as shown in the attached Figure 1 , Attachment Figure 2 And attached Figure 4 As shown, the inspection side railing 400 is fixed to one side of the fixed base railing 200 through the inspection railing bracket 600, and the ladder side railing 300 is also arranged on one side of the fixed base railing 200. At this time, the foldable multi-section ladder 500 is in a folded and stored state. The ladder side railing 300 drives the foldable multi-section ladder 500 to the inside of the ladder side railing 300 through the ladder driving rod 310 to protect it under the truck body 700 to prevent it from being damaged. When the truck stops and the operator needs to climb over the cargo hold side railing 710 to enter the truck cargo hold for operation, as shown in the attached figure Figure 5 , Attachment Figure 6As shown, by operating the ladder side railing 300 to flip to the outside of the fixed base railing 200, and temporarily fixing the ladder side railing 300 through the side rail temporary fixing unit 210, during the flipping process, the ladder side railing 300 drives the foldable multi-section ladder 500 to the position vacated after the ladder side railing 300 is flipped through the ladder driving rod 310, and then the transition platform 520 is flipped to be parallel to the horizontal plane, and then the grounding ladder section 530 is rotated until one end of the grounding ladder section 530 contacts the ground. At this time, the grounding ladder section 530 not only has the function of lifting people, but also can use the contact with the ground to support the entire foldable multi-section ladder 500. The operator moves to the transition platform 520 through the grounding ladder section 530, and on the transition platform 5 20, the upper end of the telescopic ladder section 550 is raised to a suitable height outside the cargo hold side rail 710 and then locked, and then the ladder section 540 and the telescopic ladder section 550 are raised to a height that can climb over the cargo hold side rail 710. After the foldable multi-section ladder 500 is used, the transition platform 520 and the ground ladder section 530 are folded in reverse, and the telescopic ladder section 550 is retracted, and the ladder side rail frame 300 is flipped back to the side of the fixed base rail 200, so that the foldable multi-section ladder 500 can be stored inside the ladder side rail frame 300 again to protect it under the truck body 700; and when the operator needs to inspect the bottom of the truck body 700, the inspection bar fixing block 640 on the inspection bar mounting frame 620 is loosened, and then as shown in the attached Figure 7 , Attachment Figure 8 As shown, the inspection fence fixing block 640 is rotated to an angle that can pass through the side fence fixing hole. At this time, the inspection side fence frame 400 can be separated from the inspection fence bracket 600 and flipped to the outside of the fixed base fence 200. The inspection side fence frame 400 can be temporarily fixed by the side fence temporary fixing unit 210 in the same way as the method of temporarily fixing the ladder side fence frame 300. At this time, the position of the original inspection side fence frame 400 will be vacated, and the maintenance personnel can easily enter the bottom of the truck body 700 for maintenance. After the maintenance is completed, the reverse operation is performed to flip the inspection side fence frame 400 back to its original position and re-fix it together with the inspection fence bracket 600.

[0050] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0051] The above are only preferred embodiments of the present invention. Any person skilled in the art may modify the present invention by using the above technical solutions or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solution of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A truck side guardrail assembly with multi-directional flexibility, characterized in that: include: A fixed fence bracket (100) comprises a fixed fence body connecting plate (110), the fixed fence body connecting plate (110) is used to be connected to a truck frame (720), and the fixed fence body connecting plate (110) is connected to a fixed fence mounting frame (120); The inspection fence bracket (600) includes an inspection fence body connecting plate (610), the inspection fence body connecting plate (610) is used to connect to the truck frame (720), and the inspection fence body connecting plate (610) is connected to the inspection fence mounting frame (620); A fixed base fence (200), wherein the fixed side fence frame is fixedly connected to the fixed fence mounting frame (120); A ladder side railing frame (300) and a maintenance side railing frame (400), the left and right ends of the fixed base railing (200) are rotatably connected to the ladder side railing frame (300) and the maintenance side railing frame (400), the maintenance side railing frame (400) is detachably fixedly connected to the maintenance railing mounting frame (620), and the ladder side railing frame (300) is rotatably connected to a ladder driving rod (310); A foldable multi-section ladder (500), wherein both ends of the ladder driving rod (310) are rotatably connected to the foldable multi-section ladder (500) and the ladder side railing (300), respectively; the foldable multi-section ladder (500) comprises a ladder base (510), a fixed ladder section (540) and a telescopic ladder section (550); the fixed ladder section (540) is fixedly connected to the ladder base (510), and the telescopic ladder section (550) is slidably connected to the fixed ladder section (540); The elastic support rod (800) is used to connect the truck frame (720) and the foldable multi-section ladder (500), and the two ends of the elastic support rod (800) are rotatably connected to the truck frame (720) and the foldable multi-section ladder (500) respectively.

2. The multi-directional flexible adjustable truck side guardrail assembly according to claim 1, characterized in that: The foldable multi-section ladder (500) further comprises a transition platform (520), one end of which is rotatably connected to the ladder base (510) and the other end of which is rotatably connected to a grounding ladder section (530).

3. The multi-directionally flexibly adjustable truck side guardrail assembly according to claim 2, characterized in that: The ladder base (510) comprises a first limit plate and a second limit plate, and the transition platform (520) can be stopped by the first limit plate and the second limit plate respectively during rotation.

4. The multi-directionally flexibly adjustable truck side guardrail assembly according to claim 3, characterized in that: There are two ladder driving rods (310) arranged in parallel vertically, there are two elastic support rods (800) arranged in parallel horizontally, and the telescopic parts of the two elastic support rods (800) are rotatably connected to the left and right side parts of the fixed ladder section (540) respectively.

5. The multi-directionally flexibly adjustable truck side guardrail assembly according to claim 4, characterized in that: The elastic support rod (800) is a pneumatic support rod.

6. The multi-directionally flexibly adjustable truck side guardrail assembly according to claim 1, characterized in that: The fixed base fence (200) is provided with at least one side fence temporary fixing unit (210), the side fence temporary fixing unit (210) comprises an elastically retractable side fence temporary fixing shaft (211), the side fence fixing shaft is provided with a rotatable side fence temporary clamping block (212), and the ladder side fence frame (300) and the maintenance side fence frame (400) are both provided with side fence fixing clamping holes adapted to the side fence temporary clamping block (212).

7. The multi-directionally flexibly adjustable truck side guardrail assembly according to claim 6, characterized in that: The inspection fence mounting frame (620) is provided with an inspection fence back pressure block (630) on the side facing the inspection side fence frame (400), and the inspection fence back pressure block (630) is detachably connected to the inspection fence fixing block (640), and the number of the inspection fence back pressure block (630) and the inspection fence fixing block (640) is adapted to the number of the side fence fixing holes on the inspection side fence frame (400).

8. The multi-directionally flexibly adjustable truck side guardrail assembly according to claim 1, characterized in that: The fixed fence body connecting plate (110) is provided with a plurality of fixed fence adjustment waist holes, and the fixed fence mounting frame (120) is provided with a plurality of fixed fence mounting frame (120) connection holes matched with the plurality of fixed fence adjustment waist holes. The fixed fence body connecting plate (110) and the fixed fence mounting frame (120) are detachably fixedly connected together by means of a bolt fastening mechanism that passes through the fixed fence adjustment waist holes and the fixed fence mounting frame (120) connection holes respectively. The fixed fence mounting frame (120) is detachably connected with a plurality of fixed fence connection blocks (130), and a plurality of fixed fence limiting flanges matched with the fixed fence connection blocks (130) are provided on a side of the fixed base fence (200) facing the fixed fence mounting frame (120).

9. The multi-directionally flexibly adjustable truck side guardrail assembly according to claim 8, characterized in that: The inspection fence body connecting plate (610) is provided with a plurality of inspection fence adjustment waist holes, and the inspection fence mounting frame (620) is provided with a plurality of inspection fence mounting frame (620) connection holes adapted to the plurality of inspection fence adjustment waist holes. The inspection fence body connecting plate (610) and the inspection fence mounting frame (620) are detachably fixedly connected together by means of a bolt fastening mechanism that passes through the inspection fence adjustment waist holes and the inspection fence mounting frame (620) connection holes, respectively.

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