Adjustable heavy-duty cantilevered shelving

Abstract

The application provides an adjustable heavy cantilever shelf, and relates to the field of cantilever shelves.The adjustable heavy cantilever shelf comprises a limiting support frame, a load-bearing cantilever, a material bearing frame, a state monitoring rod, a sliding trigger rod and an audible and visual alarm.The load-bearing cantilever is rotationally connected to the rear side of the limiting support frame.The material bearing frame is bolted to the front side of the load-bearing cantilever.The state monitoring rod is fixedly connected to the front side of the load-bearing cantilever.The sliding trigger rod is rotationally connected to the rear side of the state monitoring rod.The audible and visual alarm is bolted to the outer side of the limiting support frame.The application can accurately capture and convert the tiny plastic deformation of the root of the load-bearing cantilever caused by long-term stress concentration and metal fatigue, which is difficult to identify with the naked eye.When the deformation reaches the safety threshold, the audible and visual alarm is triggered in time, which significantly reduces the safety risk in the industrial storage scene.The application solves the problem that the deflection is extremely small in the initial stage of cantilever deformation, which is difficult to identify with the naked eye and is prone to sudden cantilever rupture.

Description

Technical Field

[0001] This invention relates to the field of cantilever rack technology, and particularly to an adjustable heavy-duty cantilever rack. Background Technology

[0002] In industrial warehousing scenarios, long and narrow materials such as seamless steel pipes, angle steel, channel steel, aluminum profiles, round steel, and long plates are difficult to store efficiently using ordinary pallet racks due to their special dimensions. Cantilever racks, as special storage equipment for long materials, are mainly composed of columns, cantilever arms, connecting beams, tensile support structures, and fasteners. They can accommodate the storage needs of long materials of various specifications by adjusting the cantilever angle.

[0003] For example, CN114468622B discloses a heavy-duty cantilever rack composed of several rack units. The rack units are connected by connecting rods. Each rack unit includes a base, vertical frames, and cantilever cross frames. The base is fixed to the ground, securing the entire rack unit to the ground. The lower end of the vertical frame is perpendicular to the side of the base. The connecting rods are placed between the vertical frames of two adjacent rack units to connect adjacent rack units into a cantilever rack as a whole. Cantilever cross frames are provided on both sides of the vertical frame. The cantilever cross frames on both sides are symmetrically arranged, with the outer end height higher than the inner end height. A reinforcing tube passes through the middle of the corresponding cantilever cross frames on both sides. The reinforcing tubes can connect the corresponding cantilever cross frames on both sides to form a structural whole, improving the load-bearing capacity of the cantilever cross frames.

[0004] However, during long-term use, continuous stress concentration will occur at the root of the cantilever, gradually causing metal fatigue microcracks to propagate inward, resulting in plastic bending deformation of the cantilever. In the early stage of deformation, the deflection is extremely small and difficult to detect with the naked eye. When subsequent loads are superimposed or when subjected to slight impacts from forklift operations, the cantilever is prone to sudden breakage, causing long materials to roll off. This can not only damage the goods, but also easily cause safety accidents such as injuring people and damaging surrounding equipment. Summary of the Invention

[0005] In view of this, the present invention provides an adjustable heavy-duty cantilever rack, which enables flexible adjustment of the cantilever angle to accommodate the storage needs of long and narrow materials of different shapes and specifications, such as seamless steel pipes, angle steel, channel steel, and aluminum profiles. This significantly expands the rack's applicability, avoids the limitations of material storage caused by fixed rack structures, and improves the utilization rate of warehouse space. It can accurately detect and transform minute plastic deformations at the base of the load-bearing cantilever that are difficult to detect with the naked eye due to long-term stress concentration and metal fatigue. When the deformation reaches a safety threshold, it promptly triggers an audible and visual alarm, reminding operators to stop use and carry out maintenance. This prevents accidents caused by sudden cantilever breakage leading to long materials rolling down, effectively protecting the personal safety of warehouse personnel and avoiding damage to goods and surrounding equipment. This significantly reduces economic losses and safety risks in industrial warehousing scenarios. It can detect the placement status of goods in real time, and when goods are unbalanced at the front, it guides operators to place goods in a standardized manner through intuitive visual warnings. This reduces stress concentration at the root of the cantilever caused by unbalanced loading, delays the generation and propagation of metal fatigue microcracks, effectively extends the service life of the load-bearing cantilever, and avoids damage to the rack structure caused by unreasonable load distribution. It can absorb and dissipate the impact energy generated by forklift collisions, evenly distribute the concentrated force generated by the collision, and prevent deformation of the limit support frame due to local stress concentration. This greatly reduces the impact of forklift collisions on the overall stability of the rack, reduces the repair costs required for rack damage caused by collisions, and further extends the overall service life of the rack.

[0006] This invention provides an adjustable heavy-duty cantilever rack, specifically comprising: a limiting support frame, load-bearing cantilever arms, a material support frame, status monitoring rods, a buffer structure, a limiting structure, a detection structure, sliding trigger rods, and audible and visual alarms; multiple load-bearing cantilever arms are evenly distributed and rotatably connected to the rear side of the limiting support frame; multiple material support frames are respectively bolted to the front side of the multiple load-bearing cantilever arms; multiple status monitoring rods are respectively fixedly connected to the front side of the multiple load-bearing cantilever arms; the buffer structure is located at the lower part of the limiting support frame; the limiting structure is located on the outer side of the load-bearing cantilever arms; multiple sliding trigger rods are respectively rotatably connected to the rear side of the multiple status monitoring rods; multiple audible and visual alarms are evenly distributed and bolted to the outer side of the limiting support frame; and the detection structure is located at the upper part of the material support frame.

[0007] Furthermore, the buffer structure includes a limiting fixing plate and rubber buffer blocks; multiple limiting fixing plates are provided, and the multiple limiting fixing plates are evenly distributed and bolted to the lower part of the limiting support frame; multiple rubber buffer blocks are provided, and the multiple rubber buffer blocks are respectively bonded to the outer side of the multiple limiting fixing plates.

[0008] Furthermore, the buffer structure also includes damping elastic elements and force-bearing rigid plates; multiple damping elastic elements are provided, and the multiple damping elastic elements are evenly distributed and fixedly connected to the inner side of multiple rubber buffer blocks; multiple force-bearing rigid plates are provided, and the multiple force-bearing rigid plates are respectively fixedly connected to the outer side of multiple rubber buffer blocks.

[0009] Furthermore, the limiting structure includes limiting connecting shafts and guide connecting sleeves; multiple limiting connecting shafts are provided, and the multiple limiting connecting shafts are respectively fixedly connected to the outer side of the multiple load-bearing cantilever arms, and the multiple limiting connecting shafts are respectively rotatably connected to the multiple status monitoring rods; multiple guide connecting sleeves are provided, and the multiple guide connecting sleeves are respectively fixedly connected to the rear side of the multiple load-bearing cantilever arms, and the multiple guide connecting sleeves are respectively slidably connected to the multiple sliding trigger rods.

[0010] Furthermore, the limiting structure also includes a push-button switch and a positioning connecting shaft; multiple push-button switches are provided, each push-button switch is respectively disposed inside the multiple guide connecting sleeves, and each push-button switch is connected in series with the control circuit of the multiple audible and visual alarms; multiple positioning connecting shafts are provided, each positioning connecting shaft is respectively fixedly connected to the rear side of the multiple status monitoring rods, and each positioning connecting shaft is rotatably connected to the multiple sliding trigger rods.

[0011] Furthermore, the detection structure includes a status observation frame and a front pressure plate; multiple status observation frames are provided, and the multiple status observation frames are respectively opened on the front side of multiple material carriers; multiple front pressure plates are provided, and the multiple front pressure plates are respectively slidably connected to the front side of multiple material carriers.

[0012] Furthermore, the detection structure also includes a status indicator plate and a first reset elastic element; multiple status indicator plates are provided, and the multiple status indicator plates are respectively fixedly connected to the front side of the multiple front pressure plates; multiple first reset elastic elements are provided, the upper ends of the multiple first reset elastic elements are respectively fixedly connected to the middle of the multiple front pressure plates, and the lower ends of the multiple first reset elastic elements are respectively fixedly connected to the inner side of the multiple material carriers.

[0013] Furthermore, the detection structure also includes position limiting grooves and central pressure plates; multiple position limiting grooves are provided, and the multiple position limiting grooves are respectively opened on the rear side of the multiple front pressure plates; multiple central pressure plates are provided, and the multiple central pressure plates are respectively slidably connected to the middle of the multiple material carriers.

[0014] Furthermore, the detection structure also includes a position limiting member and a second reset elastic member; multiple position limiting members are provided, and the multiple position limiting members are slidably connected up and down to the middle of the multiple material carriers; multiple second reset elastic members are provided, the rear ends of the multiple second reset elastic members are fixedly connected to the lower part of the multiple position limiting members, and the front ends of the multiple second reset elastic members are fixedly connected to the inner side of the multiple material carriers.

[0015] Furthermore, the detection structure also includes limiting compression ramps and third reset elastic elements; multiple limiting compression ramps are provided, and the multiple limiting compression ramps are respectively fixedly connected to the front side of the multiple central pressure plates, and the multiple limiting compression ramps are respectively slidably connected to the multiple material carriers; multiple third reset elastic elements are provided, the upper ends of the multiple third reset elastic elements are respectively fixedly connected to the middle of the multiple central pressure plates, and the lower ends of the multiple third reset elastic elements are respectively fixedly connected to the inner side of the multiple material carriers.

[0016] Beneficial effects

[0017] This invention achieves flexible adjustment of the cantilever angle through a rotating connection design between the load-bearing cantilever and the limiting support frame. This adapts to the storage needs of long, narrow materials of different shapes and specifications, such as seamless steel pipes, angle steel, channel steel, and aluminum profiles, significantly expanding the applicability of the shelving system. It avoids the limitations of material storage caused by fixed shelving structures, improving the utilization rate of warehouse space. Through the combination of a status monitoring rod, sliding trigger rod, push-button switch, and audible and visual alarm, it can accurately capture and transform minute plastic deformations at the base of the load-bearing cantilever that are difficult to detect with the naked eye due to long-term stress concentration and metal fatigue. When the deformation reaches a safety threshold, it promptly triggers an audible and visual alarm, reminding operators to stop use and perform maintenance. This prevents accidents caused by sudden cantilever breakage leading to long materials rolling down, effectively protecting the personal safety of warehouse personnel and preventing damage to goods and surrounding equipment. The system significantly reduces economic losses caused by forklift collisions and safety risks in industrial warehousing scenarios. It can monitor the placement status of goods in real time, and when goods are unbalanced at the front, it guides operators to place goods correctly through intuitive visual warnings. This reduces stress concentration at the root of the cantilever caused by unbalanced loading, delays the generation and propagation of metal fatigue microcracks, and effectively extends the service life of the load-bearing cantilever. It also avoids damage to the rack structure caused by unreasonable load distribution. Through the combination of rubber buffer blocks, damping elastic components and load-bearing rigid plates, it effectively absorbs and dissipates the impact energy generated by forklift collisions, evenly distributes the concentrated force generated by the collision, and avoids deformation of the limit support frame due to local stress concentration. This greatly reduces the impact of forklift collisions on the overall stability of the rack, reduces the maintenance costs required for rack damage caused by collisions, and further extends the overall service life of the rack. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram showing the positional relationship between the limiting support frame, the load-bearing cantilever, and the audible and visual alarm of the present invention.

[0023] Figure 3 This is a schematic diagram showing the positional relationship between the limiting support frame, the load-bearing cantilever, and the material carrying frame of the present invention.

[0024] Figure 4 This is a schematic diagram showing the positional relationship between the load-bearing cantilever, the material support frame, and the status monitoring rod of the present invention.

[0025] Figure 5 This is a schematic diagram showing the positional relationship between the limiting support frame, the limiting fixing plate, and the material carrying frame of the present invention.

[0026] Figure 6 This is a schematic diagram showing the positional relationship between the material support frame, the front pressure plate, the middle pressure plate, and the limiting extrusion block of the present invention.

[0027] Figure 7 This is a schematic diagram showing the positional relationship between the front pressure plate, the position limiting member, and the limiting extrusion block of the present invention.

[0028] Figure 8 This is the present invention. Figure 7 A magnified schematic diagram of the structure at point A in the middle.

[0029] List of reference numerals

[0030] 1. Limiting support frame; 101. Limiting fixing plate; 102. Rubber buffer block; 103. Damping elastic element; 104. Force-bearing rigid plate; 2. Load-bearing cantilever; 201. Limiting connecting shaft; 202. Guide connecting sleeve; 203. Push-button switch; 3. Material carrier frame; 301. Status observation frame; 302. Front pressure plate; 303. Status indicator plate; 304. First reset elastic element; 305. Position limiting groove; 306. Position limiting element; 307. Second reset elastic element; 308. Middle pressure plate; 309. Limiting squeezing inclined block; 310. Third reset elastic element; 4. Status monitoring rod; 401. Positioning connecting shaft; 5. Sliding trigger rod; 6. Audible and visual alarm. Detailed Implementation

[0031] Example 1:

[0032] Please refer to Figures 1 to 5 As shown:

[0033] This invention provides an adjustable heavy-duty cantilever rack, comprising a limiting support frame 1, load-bearing cantilever arms 2, material carrier racks 3, status monitoring rods 4, a buffer structure, a limiting structure, sliding trigger rods 5, and audible and visual alarms 6. Multiple load-bearing cantilever arms 2 are evenly distributed and rotatably connected to the rear side of the limiting support frame 1. Multiple material carrier racks 3 are bolted to the front side of the multiple load-bearing cantilever arms 2. Multiple status monitoring rods 4 are fixedly connected to the front side of the multiple load-bearing cantilever arms 2. The buffer structure is located at the lower part of the limiting support frame 1. The limiting structure is located on the outer side of the load-bearing cantilever arms 2. Multiple sliding trigger rods 5 are rotatably connected to the rear side of the multiple status monitoring rods 4. Multiple audible and visual alarms 6 are evenly distributed and bolted to the outer side of the limiting support frame 1.

[0034] The buffer structure includes a limiting fixing plate 101 and a rubber buffer block 102. Multiple limiting fixing plates 101 are provided, and the multiple limiting fixing plates 101 are evenly distributed and bolted to the lower part of the limiting support frame 1. Multiple rubber buffer blocks 102 are provided, and the multiple rubber buffer blocks 102 are respectively bonded to the outside of the multiple limiting fixing plates 101.

[0035] The buffer structure also includes damping elastic elements 103 and force-bearing rigid plates 104; multiple damping elastic elements 103 are provided, and multiple damping elastic elements 103 are evenly distributed and fixedly connected to the inner side of multiple rubber buffer blocks 102; multiple force-bearing rigid plates 104 are provided, and multiple force-bearing rigid plates 104 are respectively fixedly connected to the outer side of multiple rubber buffer blocks 102.

[0036] The limiting structure includes a limiting connecting shaft 201 and a guide connecting sleeve 202. Multiple limiting connecting shafts 201 are provided, and the multiple limiting connecting shafts 201 are fixedly connected to the outside of multiple load-bearing cantilever arms 2 respectively. The multiple limiting connecting shafts 201 are rotatably connected to multiple status monitoring rods 4 respectively. Multiple guide connecting sleeves 202 are provided, and the multiple guide connecting sleeves 202 are fixedly connected to the rear side of multiple load-bearing cantilever arms 2 respectively. The multiple guide connecting sleeves 202 are slidably connected to multiple sliding trigger rods 5 respectively.

[0037] The limiting structure also includes a push-button switch 203 and a positioning connecting shaft 401. Multiple push-button switches 203 are provided, and the multiple push-button switches 203 are respectively located inside multiple guide connecting sleeves 202. The multiple push-button switches 203 are connected in series with the control circuits of multiple audible and visual alarms 6. Multiple positioning connecting shafts 401 are provided, and the multiple positioning connecting shafts 401 are respectively fixedly connected to the rear side of multiple status monitoring rods 4. The multiple positioning connecting shafts 401 are respectively rotatably connected to multiple sliding trigger rods 5.

[0038] The specific usage and function of this embodiment: Rotating the load-bearing cantilever 2 adjusts the angle and position of the material support frame 3, and simultaneously adjusts the distance between adjacent load-bearing cantilever 2 and the entire material support frame 3, facilitating the storage of goods of different sizes and improving the adaptability of the shelf. The material support frame 3 is connected by bolts for easy replacement and angle fixing later. When the load-bearing cantilever 2 undergoes slight bending deformation due to long-term overload and metal fatigue, the front end of the status monitoring rod 4 deflects downward with the deformation of the load-bearing cantilever 2. The limiting connecting shaft 201 can limit and guide the status monitoring rod 4. Through the positioning connecting shaft 401, the sliding trigger rod 5 slides upward along the guide connecting sleeve 202. When the deformation reaches the preset safety threshold, the upper end of the sliding trigger rod 5 presses against the ground. The push-button switch 203 inside the guide connecting sleeve 202 connects the control circuit of the audible and visual alarm 6. The audible and visual alarm 6 then emits an audible and visual alarm signal to promptly remind the operator to stop using the cantilever and carry out maintenance. When the rack is impacted, the limit fixing plate 101 can provide an installation base for the buffer structure. The rubber buffer block 102 and the force-bearing rigid plate 104 can initially absorb the impact energy generated by the forklift collision. The damping elastic element 103 can further dissipate the remaining impact energy, weaken the vibration transmission, and thus evenly distribute the concentrated force generated by the collision, avoiding local deformation of the limit support frame 1 due to stress concentration. This buffer structure can effectively reduce the impact of forklift collisions on the overall stability of the rack and extend the service life of the rack.

[0039] Example 2:

[0040] like Figures 5 to 8 As shown:

[0041] Based on Embodiment 1, a detection structure is also included; the detection structure is disposed on the upper part of the material support frame 3.

[0042] The detection structure includes a status observation frame 301 and a front pressure plate 302. Multiple status observation frames 301 are provided, and the multiple status observation frames 301 are respectively opened on the front side of multiple material support frames 3. Multiple front pressure plates 302 are provided, and the multiple front pressure plates 302 are respectively slidably connected to the front side of multiple material support frames 3.

[0043] The detection structure also includes a status indicator plate 303 and a first reset elastic element 304. Multiple status indicator plates 303 are provided, and multiple status indicator plates 303 are fixedly connected to the front side of multiple front pressure plates 302 respectively. Multiple first reset elastic elements 304 are provided, and the upper ends of multiple first reset elastic elements 304 are fixedly connected to the middle of multiple front pressure plates 302 respectively, and the lower ends of multiple first reset elastic elements 304 are fixedly connected to the inner side of multiple material support frames 3 respectively.

[0044] The detection structure also includes a position limiting groove 305 and a central pressure plate 308. Multiple position limiting grooves 305 are provided, and multiple position limiting grooves 305 are respectively opened on the rear side of multiple front pressure plates 302. Multiple central pressure plates 308 are provided, and multiple central pressure plates 308 are respectively slidably connected to the middle of multiple material support frames 3.

[0045] The detection structure also includes a position limiting member 306 and a second reset elastic member 307. Multiple position limiting members 306 are provided, and the multiple position limiting members 306 are slidably connected to the middle of multiple material carriers 3. Multiple second reset elastic members 307 are provided, and the rear ends of the multiple second reset elastic members 307 are fixedly connected to the lower part of the multiple position limiting members 306, and the front ends of the multiple second reset elastic members 307 are fixedly connected to the inner side of the multiple material carriers 3.

[0046] The detection structure also includes limiting compression inclined blocks 309 and third reset elastic elements 310. Multiple limiting compression inclined blocks 309 are provided, and multiple limiting compression inclined blocks 309 are fixedly connected to the front side of multiple central pressure plates 308 respectively. Multiple limiting compression inclined blocks 309 are slidably connected to multiple material carriers 3 respectively. Multiple third reset elastic elements 310 are provided, and the upper ends of multiple third reset elastic elements 310 are fixedly connected to the middle of multiple central pressure plates 308 respectively. The lower ends of multiple third reset elastic elements 310 are fixedly connected to the inner side of multiple material carriers 3 respectively.

[0047] The specific usage and function of this embodiment are as follows: When the goods are evenly placed in the middle of the material support frame 3, the weight of the goods presses down the middle pressure plate 308. The middle pressure plate 308 drives the limiting squeezing inclined block 309 to move downwards simultaneously. The inclined surface of the limiting squeezing inclined block 309 pushes the position limiting member 306 to slide forward against the elastic force of the second reset elastic member 307, so that the front end of the position limiting member 306 is inserted into the position limiting groove 305 on the rear side of the front pressure plate 302, locking the front pressure plate 302. At this time, when a large number of goods are placed and simultaneously squeezed against the front pressure plate 302, the front pressure plate 302 cannot slide downwards, and the status indicator plate 303 will not be exposed from the status observation frame 301. When the goods are only placed at the front end of the material support frame 3 and are unevenly loaded, the middle pressure plate 308 is not pressed down by the goods, and the position limiting member 306 remains in the initial position under the action of the second reset elastic member 307. Without the position limiting slot 305 inserted, the weight of the goods presses down on the front pressure plate 302. The front pressure plate 302 drives the status indicator plate 303 to move downwards synchronously, so that the red status indicator plate 303 is fully exposed from the status observation frame 301. The operator can clearly see the off-center load warning and adjust the placement position of the goods in time. After the goods are removed from the material support frame 3, the front pressure plate 302 resets upwards under the elastic force of the first reset elastic member 304. The goods can then be repositioned to the appropriate position. After all the goods are removed, the middle pressure plate 308 resets upwards under the elastic force of the third reset elastic member 310. The limiting squeezing inclined block 309 moves upwards synchronously with the middle pressure plate 308. The position limiting member 306 slides backwards and exits the position limiting slot 305 under the elastic force of the second reset elastic member 307. The entire detection structure returns to its initial state and waits for the next goods storage detection.

[0048] The following points should be noted in this article:

[0049] 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.

[0050] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.

[0051] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An adjustable heavy-duty cantilever rack, comprising a limiting support frame (1), load-bearing cantilever arms (2), a material carrying frame (3), a status monitoring rod (4), a buffer structure, a limiting structure, a detection structure, a sliding trigger rod (5), and an audible and visual alarm (6); wherein multiple load-bearing cantilever arms (2) are provided, and the multiple load-bearing cantilever arms (2) are evenly distributed and rotatably connected to the rear side of the limiting support frame (1); characterized in that: Multiple material support frames (3) are provided, and multiple material support frames (3) are bolted to the front side of multiple load-bearing cantilever arms (2); multiple status monitoring rods (4) are provided, and the front ends of multiple status monitoring rods (4) are fixedly connected to the front side of multiple load-bearing cantilever arms (2); the buffer structure is provided at the lower part of the limiting support frame (1); the limiting structure is provided on the outside of the load-bearing cantilever arm (2); multiple sliding trigger rods (5) are provided, and multiple sliding trigger rods (5) are rotatably connected to the rear side of multiple status monitoring rods (4); multiple audible and visual alarms (6) are provided, and multiple audible and visual alarms (6) are evenly distributed and bolted to the outside of the limiting support frame (1); the detection structure is provided at the upper part of the material support frame (3).

2. The adjustable heavy-duty cantilever rack as described in claim 1, characterized in that: The buffer structure includes a limiting fixing plate (101) and a rubber buffer block (102); multiple limiting fixing plates (101) are provided, and multiple limiting fixing plates (101) are evenly distributed and bolted to the lower part of the limiting support frame (1); multiple rubber buffer blocks (102) are provided, and multiple rubber buffer blocks (102) are respectively bonded to the outside of multiple limiting fixing plates (101).

3. The adjustable heavy-duty cantilever rack as described in claim 2, characterized in that: The buffer structure further includes damping elastic elements (103) and force-bearing rigid plates (104); multiple damping elastic elements (103) are provided, and multiple damping elastic elements (103) are evenly distributed and fixedly connected to the inner side of multiple rubber buffer blocks (102); multiple force-bearing rigid plates (104) are provided, and multiple force-bearing rigid plates (104) are respectively fixedly connected to the outer side of multiple rubber buffer blocks (102).

4. The adjustable heavy-duty cantilever rack as described in claim 1, characterized in that: The limiting structure includes a limiting connecting shaft (201) and a guide connecting sleeve (202); multiple limiting connecting shafts (201) are provided, and multiple limiting connecting shafts (201) are respectively fixedly connected to the outside of multiple load-bearing cantilever (2), and multiple limiting connecting shafts (201) are respectively rotatably connected to multiple status monitoring rods (4); multiple guide connecting sleeves (202) are provided, and multiple guide connecting sleeves (202) are respectively fixedly connected to the rear side of multiple load-bearing cantilever (2), and multiple guide connecting sleeves (202) are respectively slidably connected to multiple sliding trigger rods (5).

5. An adjustable heavy-duty cantilever rack as described in claim 4, characterized in that: The limiting structure also includes a push-button switch (203) and a positioning connecting shaft (401); multiple push-button switches (203) are provided, and multiple push-button switches (203) are respectively provided inside multiple guide connecting sleeves (202), and multiple push-button switches (203) are respectively connected in series with the control circuits of multiple sound and light alarms (6); multiple positioning connecting shafts (401) are provided, and multiple positioning connecting shafts (401) are respectively fixedly connected to the rear side of multiple status monitoring rods (4), and multiple positioning connecting shafts (401) are respectively rotatably connected to multiple sliding trigger rods (5).

6. The adjustable heavy-duty cantilever rack as described in claim 1, characterized in that: The detection structure includes a status observation frame (301) and a front pressure plate (302); multiple status observation frames (301) are provided, and multiple status observation frames (301) are respectively opened on the front side of multiple material carriers (3); multiple front pressure plates (302) are provided, and multiple front pressure plates (302) are respectively slidably connected to the front side of multiple material carriers (3).

7. An adjustable heavy-duty cantilever rack as described in claim 6, characterized in that: The detection structure further includes a status indicator plate (303) and a first reset elastic member (304); multiple status indicator plates (303) are provided, and multiple status indicator plates (303) are respectively fixedly connected to the front side of multiple front pressure plates (302); multiple first reset elastic members (304) are provided, and the upper ends of multiple first reset elastic members (304) are respectively fixedly connected to the middle of multiple front pressure plates (302), and the lower ends of multiple first reset elastic members (304) are respectively fixedly connected to the inner side of multiple material carriers (3).

8. The adjustable heavy-duty cantilever rack as described in claim 1, characterized in that: The detection structure also includes a position limiting groove (305) and a central pressure plate (308); multiple position limiting grooves (305) are provided, and multiple position limiting grooves (305) are respectively opened on the rear side of multiple front pressure plates (302); multiple central pressure plates (308) are provided, and multiple central pressure plates (308) are respectively slidably connected to the middle of multiple material carriers (3).

9. An adjustable heavy-duty cantilever rack as described in claim 1, characterized in that: The detection structure further includes a position limiting member (306) and a second reset elastic member (307); multiple position limiting members (306) are provided, and multiple position limiting members (306) are slidably connected to the middle of multiple material carriers (3); multiple second reset elastic members (307) are provided, and the rear ends of multiple second reset elastic members (307) are fixedly connected to the lower part of multiple position limiting members (306), and the front ends of multiple second reset elastic members (307) are fixedly connected to the inner side of multiple material carriers (3).

10. An adjustable heavy-duty cantilever rack as described in claim 8, characterized in that: The detection structure further includes a limiting compression ramp (309) and a third reset elastic element (310); multiple limiting compression ramps (309) are provided, and multiple limiting compression ramps (309) are respectively fixedly connected to the front side of multiple central pressure plates (308), and multiple limiting compression ramps (309) are respectively slidably connected to multiple material carriers (3); multiple third reset elastic elements (310) are provided, and the upper ends of multiple third reset elastic elements (310) are respectively fixedly connected to the middle of multiple central pressure plates (308), and the lower ends of multiple third reset elastic elements (310) are respectively fixedly connected to the inner side of multiple material carriers (3).

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