A mine heavy self-unloading truck cab anti-falling fence

Abstract

The application discloses a mine-used heavy self-unloading truck cab anti-falling guardrail, which comprises side fences fixed on both sides of a truck head walkway and a front rod at the front end, a foot ladder is installed at the front end of the truck head walkway, and a closing door is installed on the truck head and matched with the front rod and the side fences, wherein the closing door comprises a main rod and a door frame, the bottom of the main rod is fixed with the door frame, both ends of the main rod are provided with butt joints matched with the front rod and the side fences, and the top of the side fence is fixed with a top rod; and a protection mechanism, wherein the top rod, the front rod and the main rod are all hollow rod structures, and the protection mechanism is installed in the top rod, the existing guardrail is optimized, the protection mechanism is additionally arranged and matched with a safety belt buckle of a person, so that the person can be locked in time when the person falls down by accident when performing relevant operations on the walkway, the person can be prevented from falling to the ground continuously, and the safety of the person walking on the walkway is improved.

Description

Technical Field

[0001] This invention relates to the field of dump truck technology, and in particular to a fall protection railing for the cab of a heavy-duty mining dump truck. Background Technology

[0002] Mining dump trucks are heavy-duty trucks used in mining areas and construction sites to transport bulk materials such as ore and sand, and are capable of automatic unloading. If their maximum gross vehicle weight and maximum axle load exceed highway regulations, they can only travel on designated road sections.

[0003] Mining heavy-duty dump trucks are over seven meters high. Drivers have to climb ladders two or three stories high to get in and out of the truck every day to inspect the vehicle, troubleshoot problems, and clean the windows and rearview mirrors on the truck platform. To improve safety, railings are usually installed on the platform to prevent people from falling. However, to avoid obstructing the driver's view, the railings are usually only designed to reach the upper thigh of a normal adult. If people are working on the platform while leaning against the railing, or cleaning the platform while backing up, there is a risk of accidentally falling from a height. Therefore, it is necessary to design a fall protection railing for the cab of mining heavy-duty dump trucks to solve this problem. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the fact that conventional guardrail designs in the prior art cannot avoid the risk of people falling accidentally when operating on the platform, this invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a fall protection guardrail for the cab of a heavy-duty mining dump truck, which protects personnel through a protective mechanism, locking them in place even in the event of a fall and preventing them from falling to the ground and causing injury.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a fall protection railing for the cab of a heavy-duty mining dump truck, comprising side railings fixed on both sides of the cab walkway and a front bar at the front end, a ladder installed at the front end of the cab walkway, and a closing door installed on the cab and adapted to the front bar and side railings. The closing door comprises a main bar and a gantry, the bottom of the main bar being fixed to the gantry, and the two ends of the main bar being fitted with connecting parts that connect with the front bar and the side railings. A top bar is fixed to the top of the side railings; and a protective mechanism, wherein the top bar, the front bar, and the main bar are all hollow bar structures, and the protective mechanism is installed inside the top bar.

[0008] As a preferred embodiment of the anti-fall guardrail for the cab of a heavy-duty dump truck in mining according to the present invention, the protective mechanism includes two movable tubes, and the outer side of each movable tube is fixedly connected to a belt outlet frame. The top rod, front rod, and main rod all have a cross-sectional shape of U-shape, and the belt outlet frame is slidably connected to the notches of the top rod, front rod, and main rod. Each movable tube is a tube structure with an end plate at one end, and the end plate of the movable tube is rotatably mounted with a belt take-up shaft via a rotating shaft. One end of the belt take-up shaft is fixed with a spiral spring, and the outer end of the movable tube is fixed with a docking ring that is fixed to the outer end of the spiral spring. The other end of the belt take-up shaft is fixed with a connecting belt, and the connecting belt is wrapped around the outer side of the belt take-up shaft and extends out of the belt outlet frame, and is fixed with a buckle. Both ends of the movable tube are fixed with side plates for limiting the belt take-up shaft, and clamping components for limiting the belt take-up shaft are installed on the side plates. The adjacent ends of the two belt take-up shafts are fixed with connecting ropes.

[0009] As a preferred embodiment of the anti-fall guardrail for the cab of the heavy-duty dump truck of the present invention, the clamping assembly includes a track plate fixed on the side plate, a clamping piece slidably inserted in the track plate, a clamping wheel fixed on the outer side of the take-up shaft, and the outer end of the clamping piece is an arc-shaped head adapted to the clamping wheel, and the other end is fixed with a linkage rod, the linkage rod is fixed to the outer ends of the clamping pieces in the two clamping assemblies, and one end of the linkage rod is fixed with an elastic rope fixed to the inner wall of the output frame, and the linkage rod is pulled outward through the elastic rope.

[0010] As a preferred embodiment of the anti-fall guardrail for the cab of a heavy-duty dump truck in mining according to the present invention, the protective mechanism further includes a clamping component that abuts against the clamping assembly. The clamping component is installed in the conveyor belt frame and includes a clamping plate. Track grooves are opened on both sides of the conveyor belt frame, and reset components adapted to the track grooves are fixed on both sides of the clamping plate. One end of the clamping plate abuts against the outside of the linkage rod, and the other end is fixed with a diagonal strip. A slanted frame is installed at the port of the conveyor belt frame, and a clamping component adapted to the diagonal strip is fixed in the slanted frame. Multiple elastic elements for elasticity are installed in the clamping component.

[0011] As a preferred embodiment of the anti-fall guardrail for the cab of the heavy-duty dump truck in mining according to the present invention, the reset component includes a sliding plate that is slidably inserted into the inner wall of the track groove, and a reset spring that is fixed to the inner wall of the track groove is fixed at one end of the sliding plate.

[0012] As a preferred embodiment of the anti-fall guardrail for the cab of a heavy-duty dump truck in mining according to the present invention, the abutting member includes an abutting plate, the abutting plate has multiple grooves, and the elastic member is installed in the grooves. The outer end of the abutting plate has an arc-shaped surface structure, and a push bar that abuts against the inclined strip is fixed on its outer side.

[0013] As a preferred embodiment of the anti-fall guardrail for the cab of a heavy-duty dump truck in mining according to the present invention, the elastic element includes a rod that is slidably inserted into the groove, one end of the rod is fixed to the inner wall of the inclined frame, and the other end is slidably inserted into the groove and fixed with a limit ring, and a push spring that is fixed to the inner wall of the groove is fixed to the outer side of the limit ring.

[0014] As a preferred embodiment of the anti-fall guardrail for the cab of the heavy-duty dump truck of the present invention, wherein: a spherical ring is fixedly sleeved on the outer side of the movable tube, the spherical ring is in contact with the inner wall of the top rod, the front rod and the main rod, and a pad rod in contact with the connecting strip is fixed at the bottom of the belt frame.

[0015] As a preferred embodiment of the anti-fall guardrail for the cab of a heavy-duty dump truck in mining according to the present invention, the connecting component includes a socket fixed to one end of the main rod, a connecting seat fixed to the outer end of the side railing, a connecting rod slidably inserted into the socket and connected to the connecting seat, the connecting rod being made of iron, and a magnetic block attracted to the connecting rod being installed in the connecting seat.

[0016] As a preferred embodiment of the anti-fall guardrail for the cab of the heavy-duty dump truck of the present invention, the connecting part further includes an arc-shaped sleeve fixed to the end of the main rod away from the socket, the arc-shaped sleeve being fastened to the outer side of the front rod, and being made of rubber.

[0017] The beneficial effects of the present invention are as follows: By optimizing the existing guardrails and adding a safety mechanism that is fastened to the safety belt of the personnel, the present invention can lock the personnel in time when they accidentally fall while performing related operations on the platform, thereby preventing them from falling further to the ground and improving the safety of personnel walking on the platform.

[0018] The closed door designed in this scheme connects with the side railing and the front bar, so that when personnel are connected to the protective mechanism, they can move freely within the top bar, front bar and main bar as they walk on the platform. At the same time, the telescopic connecting belt facilitates the movement of personnel in various parts of the platform and provides safety. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0020] Figure 1 A schematic diagram of the overall anti-fall guardrail of the cab of a heavy-duty mining dump truck according to an embodiment of the present invention, showing its installation position on the truck.

[0021] Figure 2 This is a schematic diagram of the overall structure of the anti-fall guardrail for the cab of a heavy-duty mining dump truck, as provided in one embodiment of the present invention.

[0022] Figure 3 This is a partial structural schematic diagram of the anti-fall guardrail for the cab of a heavy-duty mining dump truck, as provided in one embodiment of the present invention.

[0023] Figure 4 A schematic diagram of the connection structure between the side railing and the closed door of the anti-fall guardrail for the cab of a heavy-duty dump truck in mining, as provided in one embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram showing the open and closed states of the anti-fall guardrail of the cab of a heavy-duty mining dump truck according to an embodiment of the present invention.

[0025] Figure 6 A schematic diagram of the connection structure between the protective mechanism and the top rod of the anti-fall guardrail for the cab of a heavy-duty mining dump truck, as provided in one embodiment of the present invention.

[0026] Figure 7 This is a schematic diagram of the protective mechanism of the anti-fall guardrail for the cab of a heavy-duty mining dump truck, as described in one embodiment of the present invention, after being connected with the top rod at another angle.

[0027] Figure 8 This is a partial cross-sectional view of the protective mechanism of the anti-fall guardrail for the cab of a heavy-duty mining dump truck, as described in one embodiment of the present invention.

[0028] Figure 9 A schematic diagram of the internal clamping component structure of the anti-fall guardrail for the cab of a heavy-duty mining dump truck, as provided in one embodiment of the present invention.

[0029] Figure 10 This is a partial cross-sectional view of the moving tube behind the frame of the anti-fall guardrail for the cab of a heavy-duty mining dump truck, as provided in an embodiment of the present invention.

[0030] Figure 11 This is a partial cross-sectional view of the backstop component structure of the anti-fall guardrail for the cab of a heavy-duty mining dump truck, as described in an embodiment of the present invention.

[0031] Figure 12 This is a schematic diagram showing the positions of the protective mechanism and the straight and curved sections of the top bar of the anti-fall guardrail for the cab of a heavy-duty mining dump truck, as described in one embodiment of the present invention. Detailed Implementation

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0035] Example 1

[0036] Reference Figures 1-5 This is the first embodiment of the present invention. This embodiment provides a fall protection railing for the cab of a heavy-duty dump truck used in mining. Through the designed protective mechanism 300, it can protect personnel and prevent accidental falls.

[0037] Specifically, it includes side railings 100 fixed on both sides of the front walkway and a front bar 101 at the front end. A step ladder 102 is installed at the front end of the front walkway. It also includes a closing door 200, which is installed on the front of the vehicle and is compatible with the front bar 101 and the side railings 100. The closing door 200 includes a main bar 201 and a mast 202. The bottom of the main bar 201 is fixed to the mast 202, and the two ends of the main bar 201 are equipped with connecting parts 203 that connect with the front bar 101 and the side railings 100. A top bar 204 is fixed to the top of the side railings 100. It also includes a protective mechanism 300. The top bar 204, the front bar 101 and the main bar 201 are all hollow bar structures, and the protective mechanism 300 is installed inside the top bar 204.

[0038] It should be noted that in this design, the gap between the side railing 100 and the front bar 101 is just enough to allow the door 200 to rotate and open. After the door 200 is closed, the top bar 204, the front bar 101, and the main bar 201 are all hollow bar structures, allowing the protective mechanism 300 to move smoothly between them. This allows personnel to move freely in different areas of the walkway, ensuring that while providing fall protection, it does not hinder their operations on the walkway.

[0039] It should be noted that: (referring to...) Figures 6-11 The protective mechanism 300 includes two movable tubes 301, and a tape outlet frame 302 is fixedly connected to the outer side of each movable tube 301. The top rod 204, front rod 101, and main rod 201 all have C-shaped cross-sections, and the tape outlet frame 302 slides and connects with the notches of the top rod 204, front rod 101, and main rod 201. The movable tube 301 is a tube structure with an end plate at one end, and a tape take-up shaft 303 is rotatably mounted on the end plate of the movable tube 301 via a rotating shaft. A spiral spring 304 is fixed to one end of the tape take-up shaft 303, and the movable tube... The outer end of 301 is fixed with a docking ring 305 that is fixed to the outer end of the spiral spring 304. The other end of the take-up shaft 303 is fixed with a connecting belt 306, which is wrapped around the outside of the take-up shaft 303 and extends out of the belt frame 302. A buckle 307 is fixed thereon. The two ends of the moving tube 301 are fixed with side plates 308 for limiting the take-up shaft 303, and a clamping assembly 309 for limiting the take-up shaft 303 is installed on the side plates 308. A connecting rope 310 is fixed to the adjacent ends of the two take-up shafts 303.

[0040] The clamping assembly 309 includes a track plate 309a fixed on the side plate 308, a clamping piece 309b slidably inserted in the track plate 309a, a clamping wheel 309c fixed on the outer side of the take-up shaft 303, and the outer end of the clamping piece 309b is an arc-shaped head adapted to the clamping wheel 309c. The other end is fixed with a linkage rod 309d, which is fixed to the outer end of the clamping piece 309b in the two clamping assemblies 309. One end of the linkage rod 309d is fixed with an elastic rope 309e fixed to the inner wall of the output frame 302, and the linkage rod 309d is pulled outward by the elastic rope 309e.

[0041] The principle behind locking the device to prevent accidental falls is as follows: When a person is performing related operations on the walkway and accidentally falls over the guardrail, the connecting belt 306 will flip outward and abut against the inside of the belt extension frame 302, which is also against the linkage rod 309d. This causes the clamping plate 309b to move, pushing the arc-shaped head at the other end of the clamping plate 309b to engage with any notch on the clamping wheel 309c, thus locking the wheel 309c and preventing the connecting belt 306 from being pulled out further. This prevents the person from falling further even if they accidentally fall over the guardrail, thus achieving a fall prevention effect.

[0042] Meanwhile, in this plan, refer to Figures 8-11 A spherical ring 301a is fixedly sleeved on the outside of the moving tube 301. The spherical ring 301a fits against the inner wall of the top rod 204, the front rod 101 and the main rod 201. A pad rod 302a that contacts the connecting belt 306 is fixed at the bottom of the output frame 302.

[0043] It should be noted that the design of the spherical ring 301a allows the moving tube 301 to move stably within the top rod 204, the front rod 101, and the main rod 201, and to smoothly pass through the bend of the main rod 201, such as... Figure 12 As shown, the design of the pad rod 302a also makes the contact friction between the connecting belt 306 and the belt exit frame 302 less when the belt is pulled out, resulting in a smoother operation.

[0044] In this solution, please refer to Figure 5 The docking component 203 shown in the figure includes a socket 203a fixed to one end of the main rod 201, a docking seat 203b fixed to the outer end of the side fence 100, a docking rod 203c that is slidably inserted into the socket 203a and is inserted into the docking seat 203b, the docking rod 203c is made of iron, and a magnetic block that attracts the docking rod 203c is installed in the docking seat 203b.

[0045] It should be noted that the designed socket 203a and docking rod 203c are matched with docking seat 203b so that the main rod 201 and the top rod 204 can be connected, making the movement of the moving tube 301 smoother.

[0046] The method to prevent personnel from falling and improve safety is as follows: First, personnel step onto ladder 102 to enter the walkway at the front of the vehicle, then close the closed door 200. Next, they fasten the buckle 307 in the protective mechanism 300 to their safety belt. The moving tube 301 moves at any point on the top rod 204, front rod 101, and main rod 201. Simultaneously, the connecting belt 306 is pulled, and with the reverse rotation of the spiral spring 304 and the retracting shaft 303, the connecting belt 306 is retracted. This allows personnel to walk on different areas of the walkway and perform corresponding inspections and cleaning operations. If a person accidentally falls over the railing, the connecting belt 306 will come into contact with the top of the belt exit frame 302, squeezing the linkage rod 309d. This causes the locking plate 309b to lock the locking wheel 309c, preventing the connecting belt 306 from being released further, thus preventing further falls and providing a certain degree of protection against injury from a fall to the ground.

[0047] Example 2

[0048] Reference Figure 10 and Figure 11 This is the second embodiment of the present invention. This embodiment supplements the description of the first embodiment. The difference between this embodiment and the first embodiment is that the addition of the protective mechanism 300 structure makes the locking effect more sensitive to trigger.

[0049] Specifically, the protective mechanism 300 also includes a clamping component 311 that abuts against the clamping assembly 309. The clamping component 311 is installed inside the belt delivery frame 302 and includes a clamping piece 311a. Track grooves 311b are opened on both sides of the belt delivery frame 302, and reset pieces 311c that are adapted to the track grooves 311b are fixed on both sides of the clamping piece 311a. One end of the clamping piece 311a abuts against the outside of the linkage rod 309d, and the other end is fixed with a diagonal strip 311d. A diagonal frame 311e is installed at the port of the belt delivery frame 302, and a clamping component 311f that is adapted to the diagonal strip 311d is fixed inside the diagonal frame 311e. Multiple elastic elements 311g for elasticity are installed inside the clamping component 311f.

[0050] Among them, the reset component 311c includes a sliding plate 311c-1 that is slidably inserted into the inner wall of the track groove 311b, and a reset spring 311c-2 that is fixed to the inner wall of the track groove 311b is fixed at one end of the sliding plate 311c-1.

[0051] Meanwhile, the clamping member 311f includes a clamping plate 311f-1, which has multiple grooves 311f-2, and the elastic member 311g is installed in the grooves 311f-2. The outer end of the clamping plate 311f-1 has an arc-shaped surface structure, and a pusher 311f-3 that abuts against the inclined bar 311d is fixed on its outer side.

[0052] Specifically, the elastic element 311g includes a rod 311g-1 that is slidably inserted into the groove 311f-2. One end of the rod 311g-1 is fixed to the inner wall of the inclined frame 311e, and the other end is slidably inserted into the groove 311f-2 and fixed with a limiting ring 311g-2. The limiting ring 311g-2 and the outer side are fixed with a push spring 311g-3 that is fixed to the inner wall of the groove 311f-2.

[0053] The principle of more sensitive trigger locking in case of accidental fall: In the event of an accidental fall, the connecting belt 306 flips outward, thus first contacting the abutment 311f inside the inclined frame 311e, first squeezing the abutment plate 311f-1 inside the abutment 311f, causing the pusher bar 311f-3 to squeeze the inclined bar 311d, as... Figure 10 As shown, this causes the outer end of the clamping plate 311a to press against the linkage rod 309d, causing the outer end of the clamping plate 309b to extend and engage with the clamping wheel 309c, thereby achieving locking. The locking is faster and more sensitive, making personnel safer in the event of an accident.

[0054] Example 3

[0055] Reference Figure 5 This is the third embodiment of the present invention. This embodiment provides supplementary explanations to the other embodiments. The difference between this embodiment and the other embodiments is the optimization of the docking component 203.

[0056] Specifically, the docking part 203 also includes an arc-shaped sleeve 203d fixed to the end of the main rod 201 away from the socket 203a. The arc-shaped sleeve 203d is engaged with the outer side of the front rod 101 and is made of rubber.

[0057] In this scheme, by using the docking rod 203c to connect with the docking seat 203b, the main rod 201 and the top rod 204 cooperate with each other, and then the arc sleeve 203d is used to fasten with the front rod 101, making the main rod 201 more stable after closing.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A fall protection railing for the cab of a heavy-duty mining dump truck, comprising: Side railing (100), the side railing (100) is fixed on both sides of the front walkway, including a front bar (101) set at the front end of the walkway, and a step (102) installed at the front end of the front walkway. A closing door (200) is mounted on the front of the vehicle and is adapted to the front pole (101) and the side railing (100). The closing door (200) includes a main pole (201) and a mast (202). The bottom of the main pole (201) is fixed to the mast (202), and both ends of the main pole (201) are fitted with connecting parts (203) that engage with the front pole (101) and the side railing (100). A top rod (204) is fixed to the top of the side railing (100). The protective mechanism (300) is provided, wherein the top rod (204), the front rod (101) and the main rod (201) are all hollow rod structures, and the protective mechanism (300) is installed inside the top rod (204); The protective mechanism (300) includes two movable tubes (301), and a belt outlet frame (302) is fixedly connected to the outside of the movable tubes (301). The top rod (204), the front rod (101), and the main rod (201) all have C-shaped cross-sections. The belt outlet frame (302) is slidably connected to the notches of the top rod (204), the front rod (101), and the main rod (201). The movable tube (301) is a tube structure with an end plate at one end. The end plate is rotatably mounted with a take-up shaft (303) via a rotating shaft. One end of the take-up shaft (303) is fixed with a spiral spring (304), and the outer end of the moving tube (301) is fixed with a docking ring (305) that is fixed to the outer end of the spiral spring (304). The other end of the take-up shaft (303) is fixed with a connecting belt (306), and the connecting belt (306) is wrapped around the outside of the take-up shaft (303) and extends out of the tape exit frame (302), and is fixed with a buckle (307). The moving tube (301) has side plates (308) fixed at both ends for limiting the take-up shaft (303), and a clamping assembly (309) for limiting the take-up shaft (303) is installed on the side plates (308), and a connecting rope (310) is fixed at the adjacent ends of the two take-up shafts (303). The clamping assembly (309) includes a track plate (309a) fixed on the side plate (308), a clamping piece (309b) slidably inserted in the track plate (309a), a clamping wheel (309c) fixed on the outer side of the take-up shaft (303), and the outer end of the clamping piece (309b) is an arc-shaped head adapted to the clamping wheel (309c), and the other end is fixed with a linkage rod (309d). The linkage rod (309d) is fixed to the outer end of the clamping piece (309b) in the two clamping assemblies (309), and one end of the linkage rod (309d) is fixed with an elastic rope (309e) that is fixed to the inner wall of the belt conveyor frame (302), and the linkage rod (309d) is pulled outward through the elastic rope (309e); The protective mechanism (300) further includes a clamping component (311) that abuts against the clamping assembly (309). The clamping component (311) is installed in the tape delivery frame (302) and includes a clamping piece (311a). Track grooves (311b) are opened on both sides of the tape delivery frame (302), and reset pieces (311c) that are adapted to the track grooves (311b) are fixed on both sides of the clamping piece (311a). One end of the clamping piece (311a) abuts against the outside of the linkage rod (309d), and the other end is fixed with a diagonal strip (311d). A diagonal frame (311e) is installed at the port of the belt conveyor (302), and a clamping member (311f) adapted to the diagonal strip (311d) is fixed inside the diagonal frame (311e). A plurality of elastic members (311g) for elasticity are installed inside the clamping member (311f).

2. The anti-fall guardrail for the cab of a heavy-duty mining dump truck as described in claim 1, characterized in that: The reset component (311c) includes a sliding plate (311c-1) that is slidably inserted into the inner wall of the track groove (311b), and a reset spring (311c-2) that is fixed to the inner wall of the track groove (311b) is fixed at one end of the sliding plate (311c-1).

3. The anti-fall guardrail for the cab of a heavy-duty mining dump truck as described in claim 1 or 2, characterized in that: The clamping member (311f) includes a clamping plate (311f-1), which has multiple grooves (311f-2) and the elastic member (311g) is installed in the grooves (311f-2). The outer end of the clamping plate (311f-1) has an arc-shaped surface structure, and a pusher (311f-3) that abuts against the inclined strip (311d) is fixed on its outer side.

4. The anti-fall guardrail for the cab of a heavy-duty mining dump truck as described in claim 3, characterized in that: The elastic element (311g) includes a rod (311g-1) that is slidably inserted into the groove (311f-2). One end of the rod (311g-1) is fixed to the inner wall of the inclined frame (311e), and the other end is slidably inserted into the groove (311f-2) and fixed with a limiting ring (311g-2). The limiting ring (311g-2) and a push spring (311g-3) that is fixed to the inner wall of the groove (311f-2) are fixed to the outer side.

5. The anti-fall guardrail for the cab of a heavy-duty mining dump truck as described in claim 1, characterized in that: A spherical ring (301a) is fixedly sleeved on the outside of the moving tube (301). The spherical ring (301a) is in contact with the inner wall of the top rod (204), the front rod (101) and the main rod (201). A pad rod (302a) that contacts the connecting belt (306) is fixed at the bottom of the belt frame (302).

6. The anti-fall guardrail for the cab of a heavy-duty mining dump truck as described in claim 1, characterized in that: The docking component (203) includes a socket (203a) fixed to one end of the main rod (201), a docking seat (203b) fixed to the outer end of the side fence (100), a docking rod (203c) that is slidably inserted into the socket (203a) and is inserted into the docking seat (203b), the docking rod (203c) is made of iron, and a magnetic block that attracts the docking rod (203c) is installed in the docking seat (203b).

7. The anti-fall guardrail for the cab of a heavy-duty mining dump truck as described in claim 6, characterized in that: The docking component (203) also includes an arc-shaped sleeve (203d) fixed to the end of the main rod (201) away from the socket (203a). The arc-shaped sleeve (203d) is engaged with the outer side of the front rod (101) and is made of rubber.

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