A cantilevered basket assembly

Abstract

The utility model relates to a cantilevered hanging basket technical field especially relates to a cantilevered hanging basket subassembly, including floor, the vertical parapet wall body is built in one end of floor, the cantile frame is fixedly installed at the top of floor, the cantile frame's top end is inserted with the cantilevered hanging beam of adjustable overhanging length, the cantilevered hanging beam is away from the one end of cantile frame and extends to parapet outside, and the outside end of cantilevered hanging beam is sleeved with the cable of locking through U type rope clamp, the adjustable height of still being installed on cantile frame and being in the horizontal state's adjusting mechanism, the bottom of adjusting mechanism leans on the top of parapet, and the cable passes through the end of adjusting mechanism, the utility model sets up multiple stacked counterweight on the positioning rod of bottom plate, can stably fix whole cantilevered hanging beam on the floor of roof, then realizes the distance between cable and parapet through adjusting mechanism, thereby changes the distance between the basket of cable bottom end and building, makes the basket be able to smoothly pass through the curtain wall sample of outer wall and fall to the ground.

Description

Technical Field

[0001] This utility model relates to the field of cantilevered basket technology, and in particular to a cantilevered basket assembly. Background Technology

[0002] As a key piece of equipment for high-altitude operations such as construction, maintenance, and cleaning, the suspended platform is suspended from the outside of a building by a cantilever beam, providing a high-altitude working platform for workers. The equipment mainly consists of two parts: the cantilever beam and the platform body. The cantilever beam, as the core load-bearing structure, is usually made of I-beams or channel steel. One end is firmly fixed to the building structure, while the other end bears the heavy responsibility of suspending the platform. Its stability is directly related to the safe operation of the entire equipment. The platform body is the space for workers to operate and move around. The two work together to ensure the smooth progress of high-altitude operations.

[0003] According to building construction safety regulations, cantilevered scaffolds must be lowered to the ground when not in operation to avoid the risks of high-altitude suspension. However, in actual construction, some lower floors of buildings require the preservation of the facade decoration effect for extended periods due to the need to display curtain wall samples. When construction work is carried out on the curtain wall above the display floor, the completed sample display area will hinder the scaffold from descending to the ground. Traditional cantilevered scaffolds generally lack a structural design that allows for flexible adjustment of their horizontal position, making it difficult to control the safe distance from the wall. If forced displacement is achieved by manually pulling, it is not only prone to safety accidents such as falls from heights and collision damage, but may also cause irreversible damage to the completed curtain wall samples. In view of this, this application proposes a cantilevered scaffold component. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a cantilevered basket assembly to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a cantilevered basket assembly includes a floor slab, one end of which is built with a vertical parapet wall. A cantilever frame is fixedly installed on the top of the floor slab. An adjustable suspension beam is inserted into the top of the cantilever frame. The end of the suspension beam away from the cantilever frame extends to the outside of the parapet wall, and a sling secured by a U-shaped rope clamp is sleeved on the outer end of the suspension beam. An adjustable height adjustment mechanism that is in a horizontal state is also installed on the cantilever frame. The bottom of the adjustment mechanism rests against the top of the parapet wall, and the sling passes through the end of the adjustment mechanism.

[0006] Optionally, the cantilever frame includes two sets of support frames, support pipes, and vertical rods. The two sets of support frames are vertically installed on the top of the floor slab by expansion bolts. The support pipes are horizontally fixed at the top of the two support frames. The suspension beam is inserted into the support pipes. The vertical rods are fixedly installed on the top of the support pipes. Steel cables are fixedly connected to both ends of the top of the vertical rods. The ends of the two steel cables away from the vertical rods are respectively sleeved on the two ends of the suspension beams and locked by U-shaped rope clamps.

[0007] Optionally, the support frame includes a base plate, support columns, and sleeves. The support columns are vertically installed on the top of the base plate, and the sleeves are fixedly installed on the top of the support columns. The two ends of the support tubes are welded and inserted into the two sleeves. Diagonal braces are fixedly installed between the two sides of the support columns and the base plate.

[0008] Optionally, a clamping assembly is installed at one end of the adjusting mechanism near the cantilever frame, and the clamping assembly is clamped on the support column in the support frame near the parapet wall. The clamping assembly consists of two concave clamping plates, which are respectively clamped and sleeved on both sides of the support column. A first bolt is inserted through the corners at both ends of the two clamping plates.

[0009] Optionally, the adjustment mechanism includes a horizontal plate, an adjusting plate, two fixed pulleys, a screw, a motor, and a transmission assembly. The horizontal plate is horizontally mounted on the parapet wall. A groove is provided at the end of the horizontal plate away from the clamping assembly. The adjusting plate is movably inserted into the groove. A threaded rod groove is provided at the end of the adjusting plate located in the groove. The screw is rotatably connected to the inner end of the groove and threadedly inserted into the rod groove at the end of the adjusting plate. The motor is mounted on the top of the horizontal plate near the clamping assembly. A transmission assembly is provided between the output end of the motor and the screw. A slot is provided at the end of the adjusting plate located outside the groove. The two fixed pulleys are symmetrically rotated and installed in the slot. The sling passes between the two fixed pulleys.

[0010] Optionally, the transmission assembly includes a driven gear, a transmission gear, and a driving gear. The driving gear is fixedly installed at the output end of the motor. The driven gear is fixedly sleeved on the end of the screw located outside the rod groove, and the driven gear is located directly below the driving gear. A through-hole is opened at the top of the horizontal plate and below the driving gear. The transmission gear is rotatably installed in the through-hole, and the top and bottom of the transmission gear are respectively meshed with the driving gear and the driven gear. A groove is opened at the inner end of the plate groove, and a bearing is fixedly installed in the groove. The end of the screw located outside the rod groove is fixedly inserted between the inner ring walls of the bearing.

[0011] Optionally, a first ball groove is provided at the corners of the top and bottom of the inner end of the adjusting plate, and a rotatable first limiting ball is provided in each first ball groove. Two first sliding grooves are provided at the top and bottom of the inner wall of the plate groove, and the part of each first limiting ball extending out of the first ball groove is slidably installed in the corresponding first sliding groove. A second ball groove is provided at the corners of the top and bottom of the opening of the plate groove, and a rotatable second limiting ball is provided in each second ball groove. Two second sliding grooves are provided at the top and bottom of the adjusting plate, and the part of each second limiting ball extending out of the second ball groove is slidably installed in the corresponding second sliding groove.

[0012] Optionally, two positioning rods are fixedly installed at both ends of the base plate, and multiple stacked counterweights are fitted on the two positioning rods at the same end of the base plate. Protective frames are mounted on the two sets of counterweights at the same end of the two base plates.

[0013] Optionally, the top of the protective frame is set as an X-shaped frame, and the two sides of the protective frame are set as vertical plates. The four ends of the frame are provided with positioning holes, and the four positioning holes on the frame are respectively fitted onto the four positioning rods at the same end of the two base plates. The bottom ends of both sides of the protective frame are in contact with the floor slab and are connected to the floor slab by expansion bolts.

[0014] Optionally, the side of the support tube is provided with multiple screw holes at equal intervals, and the side of the suspension beam is provided with multiple through holes at equal intervals. The distance between adjacent screw holes is the same as the distance between adjacent through holes, and a locking bolt is inserted through the corresponding screw hole and through hole.

[0015] The beneficial effects of this utility model are:

[0016] The height of the adjustment mechanism can be adjusted by the height of the parapet wall at the edge of the floor slab, and it is fixed to the support frame by the clamping assembly at its end, so that the adjustment mechanism is against the top of the parapet wall. Then, the sling is passed between the two fixed pulleys at the other end of the adjustment mechanism. When the basket is lowered, the motor is started and the rotating assembly drives the screw to rotate, so that the screw rotates with the groove in the adjustment plate, thereby driving the adjustment plate to move out of the groove. In this way, the two fixed pulleys at the end of the adjustment plate can push the sling gradually away from the wall, so that the basket avoids the curtain wall template installed on the lower floor exterior wall during the descent.

[0017] After the cantilever frame is installed and fixed, the counterweights are inserted into the two positioning rods in sequence. The weight of the counterweights increases the stability of the cantilever beam. After the counterweights are placed, the protective frame is used to fix the installed counterweights. The X-shaped frame at the top of the protective frame is fitted onto the corresponding positioning rods. The counterweights are pressed stably onto the base plate by compression. Then, the bottom of the protective frame is connected to the floor slab with expansion bolts, which can further enhance the stability of the cantilever beam installation and thus improve the safety of the device. Attached Figure Description

[0018] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the connection between the cantilever frame, counterweight, and protective frame of this utility model;

[0021] Figure 3 This is a schematic diagram of the connection between the cantilever frame, suspension beam, and adjustment mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the adjustment mechanism of this utility model;

[0023] Figure 5 This is a schematic cross-sectional view of the connection between the horizontal plate and the adjusting plate of this utility model.

[0024] Figure 6 This is a cross-sectional structural diagram of the connection between the screw and the adjusting plate of this utility model;

[0025] Figure 7 This is a schematic diagram of the connection between the support tube and the suspension beam of this utility model;

[0026] In the diagram: 1. Floor slab; 2. Support frame; 21. Base plate; 22. Support column; 23. Sleeve; 24. Diagonal brace; 3. Support pipe; 31. Locking bolt; 4. Suspension beam; 41. Through hole; 5. Vertical rod; 6. Steel cable; 7. Suspension cable; 8. Adjustment mechanism; 81. Horizontal plate; 82. Adjustment plate; 83. Fixed pulley; 84. Rod groove; 85. Screw; 86. Driven gear; 87. Transmission gear; 88. Motor; 89. Drive gear; 810. Bearing; 91. First limit ball; 92. First slide groove; 93. Second limit ball; 94. Second slide groove; 10. Clamping assembly; 11. Positioning rod; 12. Counterweight; 13. Protective frame. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] Please see Figures 1-7This utility model provides a technical solution: a cantilevered basket assembly, including a floor slab 1, one end of which is built with a vertical parapet wall. A cantilever frame is fixedly installed on the top of the floor slab 1, and an adjustable suspension beam 4 is inserted into the top of the cantilever frame. The end of the suspension beam 4 away from the cantilever frame extends to the outside of the parapet wall, and a sling 7 locked by a U-shaped rope clamp is sleeved on the outer end of the suspension beam 4. An adjustable height and horizontal adjustment mechanism 8 is also installed on the cantilever frame. The bottom of the adjustment mechanism 8 rests against the top of the parapet wall, and the sling 7 passes through the end of the adjustment mechanism 8. The suspension beam 4 is fixed by installing the cantilever frame, and the extension length of the suspension beam 4 is adjusted according to the staircase. Then, the adjustment mechanism 8 is installed and fixed according to the height of the parapet wall at the edge of the floor slab 1. Finally, the sling 7 at the end of the suspension beam 4 is passed between two fixed pulleys 83 at the end of the adjustment mechanism 8. The distance between the sling 7 and the wall can be adjusted by running the motor 88.

[0029] like Figure 3 and Figure 7 As shown, the cantilever frame includes two sets of support frames 2, support pipes 3, and vertical rods 5. The two sets of support frames 2 are vertically installed on the top of the floor slab 1 by expansion bolts. The support pipes 3 are horizontally fixedly installed on the top of the two support frames 2. The suspension beam 4 is inserted into the support pipes 3. The vertical rod 5 is fixedly installed on the top of the support pipes 3. Steel cables 6 are fixedly connected to both ends of the top of the vertical rod 5. The ends of the two steel cables 6 away from the vertical rod 5 are respectively sleeved on the two ends of the suspension beam 4 and locked by U-shaped rope clamps. The suspension beam 4 is inserted into the support pipes 3 and can be adjusted. After adjustment, the two ends of the suspension beam 4 are suspended by the two steel cables 6, which can increase the load-bearing capacity of the ends of the suspension beam 4.

[0030] like Figure 3 As shown, the support frame 2 includes a base plate 21, a support column 22, and a sleeve 23. The support column 22 is vertically installed on the top of the base plate 21, and the sleeve 23 is fixedly installed on the top of the support column 22. The two ends of the support tube 3 are welded and inserted into the two sleeves 23. Diagonal braces 24 are fixedly installed between the two sides of the support column 22 and the base plate 21. The structure in the support frame 2 is a welded integral type, which makes the structure more stable.

[0031] like Figure 3 and Figure 4As shown, a clamping assembly 10 is installed at one end of the adjustment mechanism 8 near the cantilever frame, and the clamping assembly 10 is clamped on the support column 22 in the support frame 2 near the parapet wall. The clamping assembly 10 consists of two concave clamping plates, which are respectively clamped and sleeved on both sides of the support column 22. First bolts are inserted through the corners at both ends of the two clamping plates. According to the height of the parapet wall at the edge of the floor slab 1, the clamping assembly 10 is used to install the adjustment mechanism 8 at an appropriate position on the support column 22, so that the bottom of the adjustment mechanism 8 rests against the top of the parapet wall. The parapet walls are now all made of concrete, which is highly sturdy, so the parapet wall can effectively support the adjustment mechanism 8.

[0032] like Figure 4 , Figure 5 and Figure 6 As shown, the adjusting mechanism 8 includes a horizontal plate 81, an adjusting plate 82, two fixed pulleys 83, a screw 85, a motor 88, and a transmission assembly. The horizontal plate 81 is horizontally mounted on the parapet wall. A groove is formed at the end of the horizontal plate 81 away from the clamping assembly 10. The adjusting plate 82 is movably inserted into the groove. A threaded rod groove 84 is formed at the end of the adjusting plate 82 located in the groove. The screw 85 is rotatably connected to the inner end of the groove, and the screw 85 is threaded into the rod groove 84 at the end of the adjusting plate 82. The motor 88 is mounted on the top of the horizontal plate 81 near the clamping assembly 10. The output end of the motor 88 is connected to the screw 85. A transmission assembly is provided. The adjusting plate 82 has a slot at one end outside the slot. Two fixed pulleys 83 are installed in the slot in a symmetrical manner. The sling 7 passes between the two fixed pulleys 83. The starting motor 88 transmits its power to the screw 85 through the rotating assembly, thereby causing the screw 85 to rotate in the screw groove 84 inside the adjusting plate 82. This causes the adjusting plate 82 to move out of the slot. In this way, the two fixed pulleys 83 at the end of the adjusting plate 82 can push the clamped sling 7 away from the wall, thereby increasing the distance between the suspended basket and the outer wall of the staircase, so that the suspended basket can be smoothly lowered to the ground.

[0033] like Figure 5 and Figure 6As shown, the transmission assembly includes a driven gear 86, a transmission gear 87, and a driving gear 89. The driving gear 89 is fixedly installed at the output end of the motor 88. The driven gear 86 is fixedly sleeved on one end of the screw 85 located outside the rod groove 84, and the driven gear 86 is located directly below the driving gear 89. A through-hole is opened at the top of the horizontal plate 81, below the driving gear 89. The transmission gear 87 is rotatably installed in the through-hole, and the top and bottom of the transmission gear 87 are respectively meshed with the driving gear 89 and the driven gear 86. A groove is opened at the inner end of the plate groove, and the drive gear 87 is fixed in the groove. A bearing 810 is installed, and one end of the screw 85 located outside the rod groove 84 is fixedly inserted between the inner ring walls of the bearing 810. When the motor 88 is started, it drives the drive gear 89 at the output end to rotate. The drive gear 89 drives the transmission gear 87, which is meshed with it at the bottom end, to rotate in the passage. The transmission gear 87 then drives the driven gear 86, which is meshed with it at the bottom end, to rotate, thereby driving the screw 85 to rotate. The bearing 810 connected to the end of the screw 85 can fix the position of its end, so that the screw 85 will not move during rotation.

[0034] like Figure 5 As shown, a first ball groove is provided at the corner of the top and bottom of the inner end of the adjusting plate 82. A rotatable first limiting ball 91 is provided in each first ball groove. Two first sliding grooves 92 are provided at the top and bottom of the inner wall of the groove. The part of each first limiting ball 91 extending out of the first ball groove is slidably installed in the corresponding first sliding groove 92. A second ball groove is provided at the corner of the top and bottom of the opening of the groove. A rotatable second limiting ball 93 is provided in each second ball groove. Two second sliding grooves 94 are provided at the top and bottom of the adjusting plate 82. The part of each second limiting ball 93 extending out of the second ball groove is slidably installed in the corresponding second sliding groove 94. Through the sliding cooperation of the first limiting ball 91 and the first sliding groove 92, and the sliding cooperation of the second limiting ball 93 and the second sliding groove 94, not only can the contact area between the outer wall of the adjusting plate 82 and the inner wall of the groove be reduced, thus reducing the friction between them, but the movement range of the adjusting plate 82 in the groove can also be restricted, preventing the adjusting plate 82 from detaching from the groove.

[0035] like Figure 2 and Figure 3 As shown, two positioning rods 11 are fixedly installed at both ends of the base plate 21. Multiple stacked counterweights 12 are fitted on the two positioning rods 11 at the same end of the base plate 21. A protective frame 13 is mounted on the two sets of counterweights 12 at the same end of the two base plates 21. The protective frame 13 can fix the stacked counterweights 12 on the base plate 21, so that the counterweights 12 can be stably fitted on the positioning rods 11.

[0036] like Figure 2 and Figure 3As shown, the top of the protective frame 13 is set as an X-shaped frame, and the two sides of the protective frame 13 are set as vertical plates. The four ends of the frame are provided with positioning holes, and the four positioning holes on the frame are respectively fitted onto the four positioning rods 11 at the same end of the two base plates 21. The bottom ends of both sides of the protective frame 13 are in contact with the floor slab 1 and are connected to the floor slab 1 by expansion bolts. By using expansion bolts to fix the protective frame 13 to the floor slab 1, the stability of the cantilever frame after installation can be further improved.

[0037] like Figure 3 and Figure 7 As shown, the side of the support tube 3 has multiple screw holes at equal intervals, and the side of the suspension beam 4 has multiple through holes 41 at equal intervals. The distance between adjacent screw holes is the same as the distance between adjacent through holes 41. Locking bolts 31 are inserted through the corresponding screw holes and through holes 41. By adjusting the position of the suspension beam 4 in the support tube 3, the through holes 41 on the side of the suspension beam 4 are aligned with the screw holes on the side wall of the support tube 3. Then, the position of the suspension beam 4 can be fixed in the support tube 3 using the locking bolts 31. Then, the two ends of the suspension beam 4 can be suspended using the steel cables 6 on both sides of the vertical rod 5.

[0038] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cantilevered suspended platform assembly, comprising a floor slab (1), characterized in that, One end of the floor slab (1) is built with a vertical parapet wall. A cantilever frame is fixedly installed on the top of the floor slab (1). A suspension beam (4) with adjustable extension length is inserted at the top of the cantilever frame. The end of the suspension beam (4) away from the cantilever frame extends to the outside of the parapet wall. A sling (7) locked by a U-shaped rope clamp is sleeved on the outer end of the suspension beam (4). An adjustable height adjustment mechanism (8) in a horizontal state is also installed on the cantilever frame. The bottom of the adjustment mechanism (8) abuts against the top of the parapet wall. The sling (7) passes through the end of the adjustment mechanism (8).

2. The cantilevered basket assembly according to claim 1, characterized in that, The cantilever frame includes two sets of support frames (2), support pipes (3) and vertical rods (5). The two sets of support frames (2) are vertically installed on the top of the floor slab (1) by expansion bolts. The support pipes (3) are horizontally fixedly installed on the top of the two support frames (2). The suspension beam (4) is inserted into the support pipe (3). The vertical rod (5) is fixedly installed on the top of the support pipe (3). Steel cables (6) are fixedly connected to both ends of the top of the vertical rod (5). The ends of the two steel cables (6) away from the vertical rod (5) are respectively sleeved on the two ends of the suspension beam (4) and locked by U-shaped rope clamps.

3. A cantilevered basket assembly according to claim 2, characterized in that, The support frame (2) includes a base plate (21), a support column (22) and a sleeve (23). The support column (22) is vertically installed on the top of the base plate (21). The sleeve (23) is fixedly installed on the top of the support column (22). The two ends of the support tube (3) are welded and inserted into the two sleeves (23). Diagonal braces (24) are fixedly installed between the two sides of the support column (22) and the base plate (21).

4. A cantilevered basket assembly according to claim 3, characterized in that, The adjustment mechanism (8) is equipped with a clamping assembly (10) at one end near the cantilever frame, and the clamping assembly (10) is clamped on the support column (22) in the support frame (2) near the parapet wall. The clamping assembly (10) is composed of two concave clamping plates, which are respectively clamped and sleeved on both sides of the support column (22). A first bolt is inserted through the corners at both ends of the two clamping plates.

5. A cantilevered basket assembly according to claim 3, characterized in that, The adjusting mechanism (8) includes a horizontal plate (81), an adjusting plate (82), two fixed pulleys (83), a screw (85), a motor (88), and a transmission assembly. The horizontal plate (81) is horizontally mounted on the parapet wall. A slot is provided at the end of the horizontal plate (81) away from the clamping assembly (10). The adjusting plate (82) is movably inserted into the slot. A threaded rod slot (84) is provided at the end of the adjusting plate (82) located in the slot. The screw (85) is rotatably connected to the slot. The inner end of the screw (85) is threaded into the rod groove (84) at the end of the adjusting plate (82). The motor (88) is installed on the top of the horizontal plate (81) near the clamping assembly (10). A transmission assembly is provided between the output end of the motor (88) and the screw (85). The adjusting plate (82) has a slot at one end outside the plate groove. Two fixed pulleys (83) are installed in the slot in a symmetrical manner. The sling (7) passes between the two fixed pulleys (83).

6. A cantilevered basket assembly according to claim 5, characterized in that, The transmission assembly includes a driven gear (86), a transmission gear (87), and a driving gear (89). The driving gear (89) is fixedly installed at the output end of the motor (88). The driven gear (86) is fixedly sleeved on one end of the screw (85) located outside the rod groove (84) and is located directly below the driving gear (89). A through-hole is opened at the top of the horizontal plate (81) and below the driving gear (89). The transmission gear (87) is rotatably installed in the through-hole, and the top and bottom of the transmission gear (87) are respectively meshed with the driving gear (89) and the driven gear (86). A groove is opened at the inner end of the plate groove, and a bearing (810) is fixedly installed in the groove. One end of the screw (85) located outside the rod groove (84) is fixedly inserted between the inner ring walls of the bearing (810).

7. A cantilevered basket assembly according to claim 5, characterized in that, The adjustment plate (82) has a first ball groove at the corner of the top and bottom of the inner end, and a rotatable first limiting ball (91) is provided in each first ball groove. The top and bottom of the inner wall of the plate groove have two first sliding grooves (92). The part of each first limiting ball (91) extending out of the first ball groove is slidably installed in the corresponding first sliding groove (92). The top and bottom corner of the opening of the plate groove have a second ball groove, and a rotatable second limiting ball (93) is provided in each second ball groove. The top and bottom of the adjustment plate (82) have two second sliding grooves (94). The part of each second limiting ball (93) extending out of the second ball groove is slidably installed in the corresponding second sliding groove (94).

8. A cantilevered basket assembly according to claim 3, characterized in that, Two positioning rods (11) are fixedly installed at both ends of the base plate (21). Multiple stacked counterweights (12) are fitted on the two positioning rods (11) at the same end of the base plate (21). A protective frame (13) is mounted on the two sets of counterweights (12) at the same end of the two base plates (21).

9. A cantilevered basket assembly according to claim 8, characterized in that, The top of the protective frame (13) is set as an X-shaped frame, and the two sides of the protective frame (13) are set as vertical plates. The four ends of the frame are provided with positioning holes, and the four positioning holes on the frame are respectively fitted onto the four positioning rods (11) at the same end of the two base plates (21). The bottom ends of both sides of the protective frame (13) are in contact with the floor slab (1) and are connected to the floor slab (1) by expansion bolts.

10. A cantilevered basket assembly according to claim 2, characterized in that, The side of the support tube (3) is provided with multiple screw holes at equal intervals, and the side of the suspension beam (4) is provided with multiple through holes (41) at equal intervals. The distance between adjacent screw holes is the same as the distance between adjacent through holes (41). Locking bolts (31) are inserted through the corresponding screw holes and through holes (41).

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