Cantilever eave structure lower hanging basket system

Abstract

The utility model relates to the related technical field of ancient building outer wall construction, in particular to a lower hanging basket system of a cantilever eave structure. A frame is fixedly connected to the top of the bottom plate, a hanging basket body is arranged in the frame, and an emergency stop box is fixedly connected to the bottom of the hanging basket body. Under the matching action of the bottom plate, the frame, the hanging basket body, the emergency stop box, the lifting sliding block, the emergency stop rod and the emergency brake mechanism, the hanging basket can be quickly fixed in situ when a steel cable is broken, the hanging basket is prevented from falling from high altitude, safety accidents are further avoided, and the safety of a worker is guaranteed. The problems that an existing lower hanging basket system of an overhanging eave structure does not have the emergency braking function, lifting of a hanging basket is generally controlled through cooperation of a motor and a steel cable, but the steel cable is prone to breakage due to abrasion and corrosion in the long-term use process, the hanging basket rapidly falls from the high altitude, and the safety of the hanging basket is affected are solved. Therefore, safety accidents are caused.

Description

Technical Field

[0001] This utility model relates to the technical field of ancient building exterior wall construction, specifically a suspended basket system under cantilevered eaves structure. Background Technology

[0002] Ninety-nine percent of the ancient dwellings in Xi'an's old city have disappeared, leaving only a few scattered remains. However, some features of these ancient buildings have been preserved in modern architectural designs, especially the "large roof" structure. These structures, widely distributed throughout the city and most closely intertwined with the daily lives of its residents, are undoubtedly found in the ubiquitous streets and alleys. To ensure the aesthetic appeal of these buildings, regular maintenance of their exterior walls is necessary; however, the standard construction system is a suspended platform system.

[0003] Utility model patent CN219773565U discloses a suspended platform system for cantilevered eaves structures, belonging to the technical field of ancient building exterior wall construction. It addresses the problem that most high-rise cantilevered eaves structures are steep, making it impossible to place suspension frames, resulting in difficult and inefficient construction, and negatively impacting exterior wall decoration. The system includes a suspended platform and a crossbar. The crossbar is horizontally fixed to the top surface of the cantilever structure. Steel wire ropes are connected to the left and right ends of the suspended platform, passing through pre-drilled holes in the cantilever structure and connecting to the crossbar.

[0004] However, the above patent still has shortcomings: the patent does not have an emergency braking function. Since the suspended platform is generally controlled by the cooperation of motor and steel cable, the steel cable is prone to breakage due to wear and corrosion during long-term use, causing the suspended platform to fall rapidly from the height, thus causing a safety accident. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a suspended platform system under a cantilevered eaves structure to solve the problem mentioned in the background art that the existing suspended platform system under a cantilevered eaves structure does not have an emergency braking function. Since the suspended platform is generally controlled by the cooperation of a motor and a steel cable to raise and lower the platform, the steel cable is prone to breakage due to wear and corrosion during long-term use, causing the suspended platform to fall rapidly from a height, thus causing a safety accident.

[0006] The technical solution of this utility model is:

[0007] A suspended platform system under a cantilevered eaves structure includes: a base plate; a frame fixedly connected to the top of the base plate, a suspended platform body disposed inside the frame, an emergency stop box fixedly connected to the bottom of the suspended platform body, lifting sliders disposed on both sides of the emergency stop box, the lifting sliders being fixedly connected to the suspended platform body and the emergency stop box, an emergency stop rod slidably connected inside each lifting slider, the two ends of the emergency stop rod being fixedly connected to the base plate and the frame respectively; an emergency braking mechanism is disposed inside the emergency stop box to prevent the suspended platform body from falling from a height; and buffer mechanisms are disposed at the four corners of the top of the base plate to improve the safety performance of the device.

[0008] Preferably, the emergency braking mechanism includes: a linkage block is disposed inside the emergency stop box; a circular plate is fixedly connected to the top of the linkage block; first rotating shafts are fixedly connected to both sides of the linkage block; first linkage rods are rotatably connected to the outer surface of the middle portion of each of the first rotating shafts; a second rotating shaft is rotatably connected to the end of each first linkage rod away from the first rotating shaft; first fixing blocks are fixedly connected to both ends of the second rotating shaft; a pull rod is fixedly connected to the top center of the circular plate; the top end of the pull rod passes through the basket body and extends to a limiting plate; the limiting plate is fixedly connected to the pull rod; and the pull rod is slidably connected to the basket body. A first spring is provided between the circular plate and the suspended basket body, and the first spring is sleeved on the outer surface of the pull rod; a moving block is provided at the bottom of the second rotating shaft, and the first fixed block is fixedly connected to the moving block; an extension block is fixedly connected to the side of the moving block near the emergency stop lever; three limiting teeth are fixedly connected to the side of the extension block near the emergency stop lever; a matching limiting groove is provided on the side of the emergency stop lever near the limiting teeth; a matching through hole is provided on the emergency stop box and the lifting slider near the extension block; a connecting mechanism for lifting the suspended basket body is provided at the top of the limiting plate.

[0009] Preferably, the connecting mechanism includes: a fixing ring fixedly connected to the top of the limiting plate, a first steel cable connected inside the fixing ring, a connecting block fixedly connected to the top of the first steel cable, and a lifting steel cable fixedly connected to the top of the connecting block; a second steel cable fixedly connected to each of the four corners of the connecting block, and the end of the second steel cable away from the connecting block being fixedly connected to the top four corners of the suspended basket body respectively.

[0010] Preferably, the emergency stop box is fixedly connected to two first sliding rods near the moving block, and both moving blocks are slidably connected to the first sliding rods.

[0011] Preferably, the buffer mechanism includes: support blocks fixedly connected to the top four corners of the base plate; two support blocks are fixedly connected to each other via a second slide rod; buffer blocks are slidably connected to the outer surfaces of both ends of the second slide rod; a second linkage rod is provided on the top of each buffer block; a third rotating shaft is rotatably connected to one end of the second linkage rod; a second fixing block is fixedly connected to both ends of the third rotating shaft; the second fixing block is fixedly connected to the buffer plate; a fourth rotating shaft is rotatably connected to the end of the second linkage rod away from the third rotating shaft; a third fixing block is fixedly connected to both ends of the fourth rotating shaft; the third fixing block is fixedly connected to the buffer block respectively; a second spring is provided between each buffer block and the support block; the second spring is sleeved on the outer surface of the second slide rod.

[0012] Preferably, rubber blocks are provided at the four bottom corners of the emergency stop box, and the rubber blocks are fixedly connected to the emergency stop box.

[0013] Preferably, two structural plates are provided on each side of the frame, and the structural plates are fixedly connected to the frame and the base plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] Firstly, this utility model, through the coordinated action of the base plate, frame, suspended platform body, emergency stop box, lifting slider, emergency stop bar, and emergency braking mechanism, can quickly fix the suspended platform in its original position even when the steel cable breaks, preventing the suspended platform from falling from a height and thus avoiding safety accidents. It solves the problem that existing suspended platform systems under cantilevered eaves structures do not have an emergency braking function. Since the suspended platform is generally controlled by the cooperation of motor and steel cable, the steel cable is prone to breakage due to wear and corrosion during long-term use, causing the suspended platform to fall rapidly from a height and thus causing safety accidents.

[0016] Secondly, through the coordinated action of the base plate, frame, suspended platform body, emergency stop box, lifting slider, emergency stop bar, and buffer mechanism, this utility model can buffer the suspended platform as it descends, preventing it from colliding with the bottom of the device and causing instability among the workers inside the platform, thus improving safety. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the suspended basket system under the cantilevered eaves structure of this utility model;

[0018] Figure 2 This is a side sectional view of the suspended basket system under the cantilevered eaves structure of this utility model.

[0019] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0020] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point B;

[0021] Figure 5 This is a schematic diagram of the emergency braking mechanism of this utility model;

[0022] Figure 6 This is a schematic diagram of the buffer mechanism structure of this utility model.

[0023] In the picture:

[0024] 1. Base plate; 2. Frame; 3. Suspended basket body; 4. Emergency stop box; 5. Lifting slider; 6. Emergency brake mechanism; 7. Buffer mechanism; 8. Linkage block; 9. Circular plate; 10. First rotating shaft; 11. First linkage rod; 12. Second rotating shaft; 13. First fixing block; 14. Structural plate; 15. Tie rod; 16. Limiting plate; 17. First spring; 18. Moving block; 19. Extension block; 20. Limiting tooth; 21. Limiting groove; 22. Through 23. Hole; 24. Fixing ring; 25. First steel cable; 26. Connecting block; 27. Lifting steel cable; 28. Second steel cable; 29. ​​First sliding rod; 30. Support block; 31. Second sliding rod; 32. Buffer block; 33. Second linkage rod; 34. Third rotating shaft; 35. Second fixing block; 36. Fourth rotating shaft; 37. Third fixing block; 38. Second spring; 39. Rubber block; 40. Buffer plate; 41. Connecting mechanism; 42. Emergency stop lever. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1 to 6 The present invention will describe the above technical solution in detail through the following embodiments:

[0027] The suspended platform system under the cantilevered eaves structure includes: a base plate 1; a frame 2 fixedly connected to the top of the base plate 1, a suspended platform body 3 housed inside the frame 2, an emergency stop box 4 fixedly connected to the bottom of the suspended platform body 3, lifting sliders 5 on both sides of the emergency stop box 4, the lifting sliders 5 being fixedly connected to the suspended platform body 3 and the emergency stop box 4, an emergency stop rod 41 slidably connected inside each lifting slider 5, the two ends of the emergency stop rod 41 being fixedly connected to the base plate 1 and the frame 2 respectively; the emergency stop box 4 is equipped with an emergency brake to prevent the suspended platform body 3 from falling from a height. Mechanism 6; The four corners of the top of the base plate 1 are equipped with buffer mechanisms 7 to improve the safety performance of the device. The user pulls the emergency braking mechanism 6 by the motor, so that the emergency braking mechanism 6 is separated from the emergency stop lever 41, and then pulls the basket body 3. The basket body 3 slides up and down on the outer surface of the emergency stop lever 41 through the cooperation of the lifting slider 5. When the steel cable inside the device breaks, the emergency braking mechanism 6 loses the upward pulling force and then resets, so that the emergency braking mechanism 6 and the emergency stop lever 41 are engaged, thereby limiting the basket body 3 and preventing the basket body 3 from falling from a height.

[0028] like Figures 2 to 5As shown, the emergency braking mechanism 6 includes: a linkage block 8 is provided inside the emergency stop box 4; a circular plate 9 is fixedly connected to the top of the linkage block 8; first rotating shafts 10 are fixedly connected to both sides of the linkage block 8; first linkage rods 11 are rotatably connected to the outer surface of the middle part of the first rotating shafts 10; a second rotating shaft 12 is rotatably connected to the end of the first linkage rod 11 away from the first rotating shaft 10; first fixing blocks 13 are fixedly connected to both ends of the second rotating shaft 12; a pull rod 15 is fixedly connected to the top center of the circular plate 9; the top end of the pull rod 15 passes through the basket body 3 and extends to the limiting plate 16; the limiting plate 16... The pull rod 15 is fixedly connected to the pull rod 15 and slidably connected to the basket body 3. A first spring 17 is provided between the circular plate 9 and the basket body 3, and the first spring 17 is sleeved on the outer surface of the pull rod 15. The bottom of the second rotating shaft 12 is provided with a moving block 18, and the first fixed block 13 is fixedly connected to the moving block 18. An extension block 19 is fixedly connected to the side of the moving block 18 near the emergency stop lever 41. Three limiting teeth 20 are fixedly connected to the side of the extension block 19 near the emergency stop lever 41. A matching limiting groove 21 is opened on the side of the emergency stop lever 41 near the limiting teeth 20. Both the box 4 and the lifting slider 5 have matching through holes 22 near the extension block 19; the top of the limiting plate 16 is provided with a connecting mechanism 40 for lifting the basket body 3. The motor pulls the limiting plate 16 through the connecting mechanism 40, and the limiting plate 16 drives the circular plate 9 through the pull rod 15. The circular plate 9 drives the linkage block 8 to move upward. At the same time, the linkage block 8 moves upward and pulls one end of the first linkage rod 11 through the first rotating shaft 10, so that the first linkage rod 11 pulls the second rotating shaft 12. The second rotating shaft 12 drives the moving block 18 through the first fixed block 13, and the moving block 18 drives the extension block. 19, which causes the limiting teeth 20 on the extension block 19 to separate from the limiting groove 21 on the surface of the emergency stop lever 41. When the steel cable breaks, the tension at the top of the limiting plate 16 disappears, and the first spring 17 elastically recovers and pushes the linkage block 8 downward through the circular plate 9. While the linkage block 8 moves downward, it squeezes one end of the first linkage rod 11 through the first rotating shaft 10, so that the first linkage rod 11 pushes the extension block 19 through the moving block 18, which in turn causes the limiting teeth 20 on the extension block 19 to engage with the limiting groove 21 on the surface of the emergency stop lever 41, thereby achieving the purpose of limiting and stopping the suspended basket body 3.

[0029] like Figure 1 and Figure 2As shown, the connecting mechanism 40 includes: a fixing ring 23 fixedly connected to the top of the limiting plate 16; a first steel cable 24 connected inside the fixing ring 23; a connecting block 25 fixedly connected to the top of the first steel cable 24; and a lifting steel cable 26 fixedly connected to the top of the connecting block 25. Second steel cables 27 are fixedly connected to the four corners of the connecting block 25. The ends of the second steel cables 27 away from the connecting block 25 are respectively fixedly connected to the top four corners of the suspended basket body 3. The user connects one end of the lifting steel cable 26 to the motor. When the motor pulls the lifting steel cable 26, the lifting steel cable 26 pulls the connecting block 25. Simultaneously, the connecting block 25 pulls the suspended basket body 3 via the second steel cable 27 and also pulls the fixing ring 23 via the first steel cable 24. The fixing ring 23 then drives the limiting plate 16.

[0030] like Figure 5 As shown, two first sliding rods 28 are fixedly connected to the emergency stop box 4 near the moving block 18. Both moving blocks 18 are slidably connected to the first sliding rods 28, which can limit the movement of the moving blocks 18, allowing the moving blocks 18 to slide flexibly inside the emergency stop box 4.

[0031] like Figure 1 , Figure 2 and Figure 6 As shown, the buffer mechanism 7 includes: support blocks 29 are fixedly connected to the top four corners of the base plate 1; two support blocks 29 are fixedly connected to each other via a second slide rod 30; buffer blocks 31 are slidably connected to the outer surfaces of both ends of the second slide rod 30; a second linkage rod 32 is provided on the top of each buffer block 31; a third rotating shaft 33 is rotatably connected to one end of the second linkage rod 32; a second fixing block 34 is fixedly connected to both ends of the third rotating shaft 33; the second fixing blocks 34 are fixedly connected to the buffer plate 39; a fourth rotating shaft 35 is rotatably connected to the end of the second linkage rod 32 away from the third rotating shaft 33; a third fixing block 36 is fixedly connected to both ends of the fourth rotating shaft 35; the third fixing blocks 36 are respectively fixedly connected to the buffer blocks 31; and buffer blocks 31 and support blocks 29 are provided with... A second spring 37 is provided, and the second spring 37 is sleeved on the outer surface of the second slide rod 30. The buffer block 31 is provided with a damping pad to offset the rebound force of the second spring 37. When the basket body 3 descends, the basket body 3 drives the emergency stop box 4. The emergency stop box 4 presses down the buffer plate 39. The buffer plate 39 drives the second fixing block 34. The second fixing block 34 presses the top of the second linkage rod 32 through the third rotating shaft 33, so that the second linkage rod 32 pushes the third fixing block 36 through the fourth rotating shaft 35. The third fixing block 36 drives the buffer block 31, so that the buffer block 31 slides on the surface of the second slide rod 30 and, with the cooperation of the support block 29, presses the second spring 37. The second spring 37 buffers and releases the force of the basket body 3 through its own elasticity.

[0032] like Figure 1As shown, rubber blocks 38 are provided at the four corners of the bottom of the emergency stop box 4. The rubber blocks 38 are fixedly connected to the emergency stop box 4 to avoid generating a lot of noise when the emergency stop box 4 comes into contact with the buffer plate 39, and further improve the buffering effect of the suspended basket body 3.

[0033] like Figure 1 and Figure 2 As shown, two structural plates 14 are provided on both sides of the frame 2. The structural plates 14 are fixedly connected to the frame 2 and the base plate 1, which improves the structural strength at the connection between the frame 2 and the base plate 1.

[0034] Working principle: The user connects one end of the lifting cable 26 to the motor. When the motor pulls the lifting cable 26, the lifting cable 26 pulls the connecting block 25. The connecting block 25 pulls the basket body 3 through the second cable 27, and also pulls the fixing ring 23 through the first cable 24. The fixing ring 23 drives the limiting plate 16. The limiting plate 16 drives the circular plate 9 through the pull rod 15. The circular plate 9 drives the linkage block 8 to move upward. When the linkage block 8 moves upward, it pulls one end of the first linkage rod 11 through the first rotating shaft 10, so that the first linkage rod 11 pulls the second rotating shaft 12. The second rotating shaft 12 drives the moving block 18 through the first fixing block 13. The moving block 18 drives the extension block 19, which in turn causes the limiting tooth 20 on the extension block 19 to separate from the limiting groove 21 on the surface of the emergency stop rod 41. When the cable breaks, the tension at the top of the limiting plate 16 disappears, and the first spring... 17. The elastic recovery is generated by the circular plate 9 pushing the linkage block 8 downward. At the same time, the linkage block 8 moves downward and squeezes one end of the first linkage rod 11 through the first rotating shaft 10. This causes the first linkage rod 11 to push the extension block 19 through the moving block 18. In turn, the limiting tooth 20 on the extension block 19 engages with the limiting groove 21 on the surface of the emergency stop rod 41, thereby achieving the purpose of limiting and stopping the suspended basket body 3. This can quickly fix the suspended basket in its original position when the steel cable breaks, avoiding the suspended basket from falling from a height and thus avoiding safety accidents. This solves the problem that the existing suspended basket system under the cantilever eaves structure does not have an emergency braking function. Since the suspended basket is generally controlled by the cooperation of the motor and the steel cable, the steel cable is prone to breakage due to wear and corrosion during long-term use, causing the suspended basket to fall rapidly from a height and thus causing safety accidents.

[0035] As the suspended platform body 3 descends, it drives the emergency stop box 4, which presses down on the buffer plate 39. The buffer plate 39 drives the second fixing block 34, which presses the top of the second linkage rod 32 through the third rotating shaft 33. This causes the second linkage rod 32 to push the third fixing block 36 through the fourth rotating shaft 35. The third fixing block 36 drives the buffer block 31, which slides on the surface of the second sliding rod 30 while pressing the second spring 37 with the support block 29. The second spring 37 uses its own elasticity to buffer and release the force on the suspended platform body 3. This allows the device to control the descent of the suspended platform and buffer the platform when it is about to reach the bottom of the device, preventing the platform from colliding with the bottom of the device and causing the workers inside the platform to lose their footing, thus improving safety.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A suspended platform system under a cantilevered roof structure, including: Base plate (1); The feature is that: a frame (2) is fixedly connected to the top of the base plate (1), a basket body (3) is provided inside the frame (2), an emergency stop box (4) is fixedly connected to the bottom of the basket body (3), a lifting slider (5) is provided on both sides of the emergency stop box (4), the lifting slider (5) is fixedly connected to the basket body (3) and the emergency stop box (4), an emergency stop rod (41) is slidably connected inside the lifting slider (5), and the two ends of the emergency stop rod (41) are fixedly connected to the base plate (1) and the frame (2) respectively; The emergency stop box (4) is equipped with an emergency braking mechanism (6) to prevent the basket body (3) from falling from a height; The base plate (1) is equipped with buffer mechanisms (7) at the four corners of its top to improve the safety performance of the device.

2. The suspended platform system under the cantilevered eaves structure as described in claim 1, characterized in that: The emergency braking mechanism (6) includes: The emergency stop box (4) is equipped with a linkage block (8). A circular plate (9) is fixedly connected to the top of the linkage block (8). A first rotating shaft (10) is fixedly connected to both sides of the linkage block (8). A first linkage rod (11) is rotatably connected to the outer surface of the middle part of the first rotating shaft (10). A second rotating shaft (12) is rotatably connected to the end of the first linkage rod (11) away from the first rotating shaft (10). A first fixing block is fixedly connected to both ends of the second rotating shaft (12). 13) A pull rod (15) is fixedly connected to the top center of the circular plate (9). The top end of the pull rod (15) passes through the basket body (3) and extends to the limiting plate (16). The limiting plate (16) is fixedly connected to the pull rod (15). The pull rod (15) is slidably connected to the basket body (3). A first spring (17) is provided between the circular plate (9) and the basket body (3). The first spring (17) is sleeved on the outer surface of the pull rod (15). The bottom of the second rotating shaft (12) is provided with a moving block (18), and the first fixed block (13) is fixedly connected to the moving block (18). The moving block (18) is fixedly connected to an extension block (19) on the side near the emergency stop lever (41). The extension block (19) is fixedly connected to three limiting teeth (20) on the side near the emergency stop lever (41). The emergency stop lever (41) is provided with a matching limiting groove (21) on the side near the limiting teeth (20). The emergency stop box (4) and the lifting slider (5) are provided with matching through holes (22) near the extension block (19). The top of the limiting plate (16) is provided with a connecting mechanism (40) for lifting the basket body (3).

3. The suspended platform system under the cantilevered eaves structure as described in claim 2, characterized in that: The connecting mechanism (40) includes: The top of the limiting plate (16) is fixedly connected to a fixing ring (23), the inside of the fixing ring (23) is connected to a first steel cable (24), the top of the first steel cable (24) is fixedly connected to a connecting block (25), and the top of the connecting block (25) is fixedly connected to a lifting steel cable (26). The four corners of the connecting block (25) are fixedly connected with second steel cables (27), and the end of the second steel cable (27) away from the connecting block (25) is fixedly connected to the top four corners of the basket body (3).

4. The suspended platform system under the cantilevered eaves structure as described in claim 2, characterized in that: The emergency stop box (4) is fixedly connected to two first slide rods (28) near the moving block (18), and both moving blocks (18) are slidably connected to the first slide rods (28).

5. The suspended platform system under the cantilevered eaves structure as described in claim 1, characterized in that: The buffer mechanism (7) includes: Support blocks (29) are fixedly connected to the top four corners of the base plate (1). The two support blocks (29) are fixedly connected to each other by a second slide rod (30). Buffer blocks (31) are slidably connected to the outer surfaces of both ends of the second slide rod (30). A second linkage rod (32) is provided on the top of each buffer block (31). A third rotating shaft (33) is rotatably connected to one end of the second linkage rod (32). A second fixing block (34) is fixedly connected to both ends of the third rotating shaft (33). The second fixing block (34) is fixedly connected to the buffer plate (39). A fourth rotating shaft (35) is rotatably connected to the end of the second linkage rod (32) away from the third rotating shaft (33). A third fixing block (36) is fixedly connected to both ends of the fourth rotating shaft (35). The third fixing block (36) is fixedly connected to the buffer block (31) respectively. A second spring (37) is provided between the buffer block (31) and the support block (29), and the second spring (37) is sleeved on the outer surface of the second slide rod (30).

6. The suspended platform system under the cantilevered eaves structure as described in claim 1, characterized in that: The emergency stop box (4) has rubber blocks (38) at each of its four bottom corners, and the rubber blocks (38) are fixedly connected to the emergency stop box (4).

7. The suspended platform system under the cantilevered eaves structure as described in claim 1, characterized in that: Two structural plates (14) are provided on both sides of the frame (2), and the structural plates (14) are fixedly connected to the frame (2) and the base plate (1).

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