Adjustable wind-resistant hasp adaptive to angle steel roof batten of sloping roof

Abstract

The utility model relates to the technical field of tower buckles, and discloses an adjustable wind-resistant hasp matched with an inclined roof angle steel roof batten, which comprises a transverse strip, a wind-resistant hasp, a wind-resistant hasp and a wind-resistant hasp, and the top of one end of the transverse strip is provided with a fixing strip; the rotating mechanism is located between the transverse strip and the fixing strip and used for adjusting the orientation of the fixing strip, the rotating mechanism comprises a rotating mechanism body, a reinforcing mechanism and a fixing mechanism body, and the rotating mechanism body is used for rotating the fixing strip; through the arrangement of the rotating mechanism, the orientation of the fixing strip can be adjusted, and different wind-resistant tower buckles do not need to be frequently selected, so that the stability of the whole structure is improved, the accident risk is reduced, and the situation that the installation process is more complex and difficult due to lack of an adjusting function is avoided; and meanwhile, the problems that the application range of the wind-resistant hasp is limited by a traditional device, different structure and design requirements cannot be met, and the flexibility and the multifunctionality of the wind-resistant hasp are reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tower buckles, in particular to an adjustable wind-resistant buckle adapted for angle steel tile hanging strips on inclined roofs. Background Art

[0002] Wind buckles are structural connectors used in buildings, usually used to connect the walls and roofs of buildings to enhance the wind resistance of buildings, thereby enhancing the structural stability and wind resistance of buildings, improving the safety and durability of buildings, and simplifying the construction process and improving efficiency.

[0003] When the traditional sloping roof angle steel tile hanging wind-resistant tower buckle is in use, the cross bar and the fixed bar cooperate with each other to connect the angle steel tile to the roof, so that the angle steel tile can be effectively positioned on the roof top to prevent accidental falling off. However, the traditional device needs to select wind-resistant tower buckles of different angles to adapt to different angle steel tiles. However, it is difficult to adjust the direction of the fixed bar in the wind-resistant tower buckle, resulting in the connection of the angle steel tile not being strong enough. The wind-resistant tower buckle needs to be selected frequently, which affects the stability of the overall structure and increases the risk of accidents. The lack of angle adjustment function may make the installation process more complicated and difficult, requiring more manpower and time to adjust and install, increasing construction costs and cycles. At the same time, it will limit the scope of application of the wind-resistant buckle, and it cannot adapt to different structures and design requirements, reducing its flexibility and versatility. Utility Model Content

[0004] The utility model aims to provide an adjustable wind-resistant buckle adapted to the angle steel tile hanging strips of the sloping roof, which solves the problem in the background technology that it is difficult to adjust the direction of the fixing strip in the wind tower buckle.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] An adjustable wind-resistant buckle adapted for angle steel tile hanging strips on inclined roofs, comprising:

[0007] A horizontal bar, wherein a fixing bar is installed on the top of one end of the horizontal bar;

[0008] A rotating mechanism, wherein the rotating mechanism is located between the horizontal bar and the fixed bar and is used to adjust the orientation of the fixed bar, and the rotating mechanism comprises a rotating mechanism, a reinforcing mechanism and a fixing mechanism, wherein the rotating mechanism is used to rotate the fixed bar, the reinforcing mechanism is used to reinforce the rotating mechanism between the horizontal bar and the fixed bar, and the fixing mechanism is used to control the start and stop of the rotating mechanism.

[0009] Preferably, a slide plate and a mounting plate are respectively provided on both sides of the fixing bar, the slide plate is connected to the mounting plate, and a threaded hole is opened inside one side of the slide plate, a protective mechanism for protecting the threaded hole is provided between the threaded hole and the slide plate, and a positioning mechanism for positioning the slide plate is provided at the bottom of the slide plate.

[0010] Preferably, the rotating mechanism includes a fixed seat installed on the top of the horizontal bar and a rotating seat connected to the bottom of the fixed bar, the top of the fixed seat is provided with a rotating groove for the rotating seat to rotate, a rotating sleeve is fixed inside the rotating groove, and the outer wall of the rotating seat is provided with a groove body for the rotating sleeve to slide.

[0011] Preferably, the fixing mechanism includes a plurality of fixing grooves provided at the top of the groove body and a telescopic block arranged at the top of the rotating sleeve, the telescopic block corresponds to the fixing grooves, a receiving groove for the telescopic block to move is provided on one side of the fixing seat, a fixing rod is fixed to one side of the telescopic block, the fixing rod extends to one side of the fixing seat and is fixed with a control panel, a first spring is connected between the telescopic block and the receiving groove, and the first spring is sleeved on the outer wall of the fixing rod.

[0012] Preferably, the reinforcement mechanism includes a plurality of reinforcement blocks fixed on the top of the rotating seat, the plurality of reinforcement blocks are connected to the fixing bar, a plurality of reinforcement seats are fixed to the bottom of the fixing seat, the reinforcement seats are connected to the cross bar, and bolts are screwed between the reinforcement seats and the cross bar.

[0013] Preferably, the protective mechanism includes a protective seat fixed on the top of the mounting plate and a rotating plate rotatably mounted on the top of the protective seat, a rotating shaft is installed on the top of the protective seat, a mounting sleeve is provided on the outer wall of the rotating shaft, the mounting sleeve is connected to the rotating plate, a rotating knob is fixed on the top of the rotating shaft, and a limiting mechanism is provided between the rotating knob and the protective seat to limit the rotating knob.

[0014] Preferably, the limiting mechanism includes a limiting seat fixed on one side of the protective seat and a limiting rod inserted into the limiting seat, a plurality of limiting holes for inserting the limiting rod are provided at the bottom of the rotating knob, and a control mechanism for controlling the limiting rod is provided between the limiting rod and the limiting seat.

[0015] Preferably, the control mechanism includes a fixed groove opened inside the limit seat and a baffle fixed at the bottom of the limit rod, a second spring is connected between the baffle and the fixed groove, a control rod is fixed on one side of the baffle, and a movable groove for the control rod to move is opened on one side of the limit seat.

[0016] Preferably, the positioning mechanism includes an extension plate fixed to the bottom of the skateboard, a frame is fixed to one side of the extension plate, an insertion plate is arranged between the frame and the extension plate, a plurality of positioning grooves for the insertion plate to be inserted are opened on one side of the fixing strip, and a threaded mechanism for driving the insertion plate to move is arranged between the insertion plate and the frame.

[0017] Preferably, the threaded mechanism includes a threaded rod screwed into the frame body, a rotating disk is fixed to one side of the threaded rod, a connecting sleeve is fixed to one side of the plug plate, the connecting sleeve is connected to the threaded rod, a through groove for inserting the plug plate is opened inside the extension plate, a reinforcement frame is fixed to the top of the frame body, one end of the reinforcement frame is connected to the fixing bar, and a triangular support plate is fixed to one side of the reinforcement frame.

[0018] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0019] 1. The utility model can adjust the direction of the fixing strip through the setting of the rotating mechanism, increase the firmness of the connection of the diagonal steel hanging tile, and do not need to frequently select different wind-resistant tower buckles, thereby increasing the stability of the overall structure and reducing accidental risks. It also avoids the situation that the lack of adjustment function may make the installation process more complicated and difficult, requiring more manpower and time for adjustment and installation, reducing the construction cost and cycle, and at the same time solves the problem that the traditional device will limit the scope of application of the wind-resistant buckle, cannot adapt to different structures and design requirements, and reduce its flexibility and versatility.

[0020] 2. The utility model can protect the threaded holes by setting the protective mechanism. By protecting the threaded holes, the erosion and damage caused by environmental factors (such as wind, rain, corrosion, etc.) can be reduced, thereby extending the service life of the wind-resistant buckle. The protective threaded holes can reduce the damage and looseness of the buckle connection parts, enhance the stability and safety of the connection, reduce the risk of the buckle falling off or breaking, and ensure the safety of the building. At the same time, it can reduce the frequency and difficulty of maintenance and maintenance, reduce maintenance costs and manpower investment, and improve the use efficiency and reliability of the wind-resistant buckle.

[0021] 3. The utility model can position the slide plate at any position of the fixed strip by setting the positioning mechanism, so that the wind-resistant buckle is more flexible and changeable in adapting to different building structures and design requirements, and can ensure the precise alignment of the connection points, improve the stability and reliability of the connection, and help optimize the design of the wind-resistant buckle, improve its overall performance and use efficiency, meet a wider range of building needs, and at the same time reduce the adjustment and installation time, reduce construction costs, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is one of the overall structural diagrams of the utility model;

[0023] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0024] Figure 3 For this utility model Figure 1 Schematic diagram of the structure when the middle rotating mechanism is disassembled;

[0025] Figure 4 For this utility model Figure 3 A cross-sectional view of the middle fixing seat;

[0026] Figure 5 This is one of the structural diagrams of the protection mechanism of the utility model;

[0027] Figure 6 This is the second structural diagram of the protection mechanism of the utility model;

[0028] Figure 7 It is a structural schematic diagram of the positioning mechanism of the utility model;

[0029] Figure 8 For this utility model Figure 7 One of the structural diagrams of the thread mechanism;

[0030] Fig. 9 For this utility model Figure 7 The second structural diagram of the thread mechanism.

[0031] Among them: 1. horizontal bar; 2. fixed bar; 3. rotating mechanism; 4. protective mechanism; 5. positioning mechanism; 6. sliding plate; 7. mounting plate;

[0032] 31. Rotating seat; 32. Reinforcement block; 33. Fixed seat; 34. Reinforcement seat; 35. Control panel; 36. Rotating sleeve; 37. First spring; 38. Telescopic block;

[0033] 41. Protective seat; 42. Rotating plate; 43. Limiting seat; 44. Rotating knob; 45. Second spring; 46. Control rod;

[0034] 51. Extension plate; 52. Rotating plate; 53. Frame; 54. Reinforcement frame; 55. Insert plate; 56. Threaded rod. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] See also Figure 1 - Figure 4 , an adjustable wind-resistant buckle adapted for angle steel tile hanging strips of sloping roofs, comprising: a horizontal bar 1, a fixed bar 2 is installed on the top of one end of the horizontal bar 1; a rotating mechanism 3, the rotating mechanism 3 is located between the horizontal bar 1 and the fixed bar 2 and is used to adjust the direction of the fixed bar 2, and the rotating mechanism 3 includes a rotating mechanism, a reinforcing mechanism and a fixing mechanism, the rotating mechanism is used to rotate the fixed bar 2, the reinforcing mechanism is used to reinforce the rotating mechanism 3 between the horizontal bar 1 and the fixed bar 2, the fixing mechanism is used to control the start and stop of the rotating mechanism, the rotating mechanism includes a fixed seat 33 installed on the top of the horizontal bar 1 and a rotating seat 31 connected to the bottom of the fixed bar 2, the top of the fixed seat 33 is provided with a rotating groove for the rotating seat 31 to rotate, the inside of the rotating groove is fixed with a rotating sleeve 36, and the outer wall of the rotating seat 31 is provided with a rotating sleeve 36 for rotating The trough body in which the rotating sleeve 36 slides, the fixing mechanism includes a plurality of fixing grooves opened at the top of the trough body and a telescopic block 38 arranged at the top of the rotating sleeve 36, the telescopic block 38 corresponds to the fixing groove, and a storage groove for the telescopic block 38 to move is opened on one side of the fixed seat 33, a fixing rod is fixed on one side of the telescopic block 38, the fixing rod extends to one side of the fixed seat 33 and is fixed with a control board 35, a first spring 37 is connected between the telescopic block 38 and the storage groove, and the first spring 37 is sleeved on the outer wall of the fixing rod, the reinforcement mechanism includes a plurality of reinforcement blocks 32 fixed on the top of the rotating seat 31, the plurality of reinforcement blocks 32 are all connected to the fixing bar 2, a plurality of reinforcement seats 34 are fixed to the bottom of the fixed seat 33, the reinforcement seats 34 are connected to the cross bar 1, and bolts are screwed between the reinforcement seats 34 and the cross bar 1.

[0037] When in use, first make the horizontal bar 1 correspond to the angle steel tile of the roof, and the angle steel tile can be effectively fixed through the cooperation between the fixing bar 2 and the horizontal bar 1. Then, pull the control plate 35 to drive the fixing rod to move, and the movement of the fixing rod drives the telescopic block 38 to move, so that the telescopic block 38 is stored in the internal storage slot, and the movement of the telescopic block 38 drives the first spring 37 to contract, and the contraction of the first spring 37 makes the telescopic block 38 separate from the fixing slot. After the telescopic block 38 is separated from the fixing slot, the fixing bar 2 is rotated to drive the rotating seat 31 to rotate, so that the rotating seat 31 can rotate stably through the cooperation between the rotating sleeve 36 and the rotating slot, so that the direction of the fixing bar 2 can be adjusted, and the firmness of the connection to the angle steel tile is increased, and there is no need to frequently select the wrong The same wind-resistant tower buckle increases the stability of the overall structure, reduces the risk of accidents, and avoids the situation where the lack of adjustment function may make the installation process more complicated and difficult, requiring more manpower and time for adjustment and installation, reducing the construction cost and cycle, and at the same time solves the problem that traditional devices limit the scope of application of wind-resistant buckles, cannot adapt to different structures and design requirements, and reduce their flexibility and versatility. After the fixing bar 2 is rotated to the required direction, the control panel 35 is released, and the elastic force of the first spring 37 drives the telescopic block 38 to reset. Through the reset of the telescopic block 38, it is plugged into the fixing groove. Through the mutual plugging of the telescopic block 38 and the fixing groove, the rotating seat 31 can be effectively fixed, so that the user can use the horizontal bar 1 and the fixing bar 2 to connect and install the diagonal steel hanging tiles.

[0038] See also Figure 1 , Figure 5 and Figure 6A slide plate 6 and a mounting plate 7 are respectively provided on both sides of the fixing bar 2. The slide plate 6 is connected to the mounting plate 7, and a threaded hole is provided inside one side of the slide plate 6. A protective mechanism 4 for protecting the threaded hole is provided between the threaded hole and the slide plate 6. A positioning mechanism 5 for positioning the slide plate 6 is provided at the bottom of the slide plate 6. The protective mechanism 4 includes a protective seat 41 fixed to the top of the mounting plate 7 and a rotating plate 42 rotatably installed on the top of the protective seat 41. A rotating shaft is installed on the top of the protective seat 41, and a mounting sleeve is provided on the outer wall of the rotating shaft. The mounting sleeve is connected to the rotating plate 42, and a rotating knob 44 is fixed on the top of the rotating shaft. The rotating knob 44 is connected to the protective seat 41. A limiting mechanism for limiting the rotating knob 44 is arranged between the guard seats 41, and the limiting mechanism includes a limiting seat 43 fixed on one side of the guard seat 41 and a limiting rod inserted in the limiting seat 43. A plurality of limiting holes for inserting the limiting rod are provided at the bottom of the rotating knob 44, and a control mechanism for controlling the limiting rod is arranged between the limiting rod and the limiting seat 43, and the control mechanism includes a fixing groove provided in the limiting seat 43 and a baffle fixed at the bottom of the limiting rod, a second spring 45 is connected between the baffle and the fixing groove, and a control rod 46 is fixed on one side of the baffle, and a moving groove for moving the control rod 46 is provided on one side of the limiting seat 43.

[0039] When in use, first pull the control rod 46 to drive the baffle to move, and the movement of the baffle drives the second spring 45 to contract, and the contraction of the second spring 45 makes the limit rod slowly enter the limit seat 43, and the limit rod is moved to separate from the limit hole, and after the limit rod and the limit hole are separated from each other, the rotating knob 44 is turned to drive the rotating shaft to start rotating, and the rotation of the rotating shaft drives the installation sleeve to rotate, and the rotation of the installation sleeve drives the rotating plate 42 to rotate synchronously, and the rotation of the rotating plate 42 separates it from the protective seat 41, and after the rotating plate 42 and the protective seat 41 are separated from each other, , so that the threaded hole is exposed on the surface, which is then convenient for the user to fix the mounting plate 7. The threaded hole can be protected by the cooperation between the protective seat 41 and the rotating plate 42. By protecting the threaded hole, it can reduce the erosion and damage caused by environmental factors, thereby extending the service life of the wind-resistant buckle. The protective threaded hole can reduce the damage and looseness of the buckle connection part, enhance the stability and safety of the connection, reduce the risk of the buckle falling off or breaking, and ensure the safety of the building. At the same time, it can reduce the frequency and difficulty of maintenance and maintenance, reduce maintenance costs and manpower investment, and improve the efficiency and reliability of the use of wind-resistant buckles.

[0040] See also Figure 7 , Figure 8 and Fig. 9The positioning mechanism 5 includes an extended plate 51 fixed to the bottom of the skateboard 6, a frame 53 is fixed to one side of the extended plate 51, an insert plate 55 is arranged between the frame 53 and the extended plate 51, a plurality of positioning grooves for the insert plate 55 to be inserted are provided on one side of the fixed bar 2, a threaded mechanism for driving the insert plate 55 to move is provided between the insert plate 55 and the frame 53, the threaded mechanism includes a threaded rod 56 screwed into the inside of the frame 53, a rotating disk 52 is fixed to one side of the threaded rod 56, a connecting sleeve is fixed to one side of the insert plate 55, the connecting sleeve is connected to the threaded rod 56, a through groove for the insert plate 55 to be inserted is provided inside the extended plate 51, a reinforcement frame 54 is fixed to the top of the frame 53, one end of the reinforcement frame 54 is connected to the fixed bar 2, and a triangular support plate is fixed to one side of the reinforcement frame 54.

[0041] When in use, rotating the rotating disk 52 drives the threaded rod 56 to rotate in the frame 53, and the threaded rod 56 is moved by rotating, and the movement of the threaded rod 56 drives the connecting sleeve to move, and the movement of the connecting sleeve drives the plug plate 55 to move synchronously, and the plug plate 55 is moved through the through groove and inserted into the positioning groove, and the extension plate 51 is positioned by the mutual insertion of the plug plate 55 and the positioning groove, and the slide plate 6 is positioned synchronously by positioning the extension plate 51, so that the slide plate 6 can be positioned at any position of the fixing strip 2, so that the wind-resistant buckle is more flexible and changeable in adapting to different building structures and design requirements, and can ensure the precise alignment of the connection points, improve the stability and reliability of the connection, help optimize the design of the wind-resistant buckle, improve its overall performance and use efficiency, meet a wider range of building needs, and at the same time reduce the adjustment and installation time, reduce construction costs, and improve work efficiency.

[0042] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable wind-resistant buckle adapted for angle steel tile hanging strips on sloping roofs, characterized in that: include: A horizontal bar (1), wherein a fixing bar (2) is installed on the top of one end of the horizontal bar (1); A rotating mechanism (3), the rotating mechanism (3) is located between the horizontal bar (1) and the fixed bar (2) and is used to adjust the orientation of the fixed bar (2), and the rotating mechanism (3) comprises a rotating mechanism, a reinforcing mechanism and a fixing mechanism, the rotating mechanism is used to rotate the fixed bar (2), the reinforcing mechanism is used to reinforce the rotating mechanism (3) and the horizontal bar (1) and the fixed bar (2), and the fixing mechanism is used to control the start and stop of the rotating mechanism.

2. The adjustable wind-resistant buckle adapted for angle steel tile hanging strips of sloping roofs according to claim 1 is characterized by: A slide plate (6) and a mounting plate (7) are respectively arranged on both sides of the fixing strip (2); the slide plate (6) is connected to the mounting plate (7); a threaded hole is provided inside one side of the slide plate (6); a protection mechanism (4) for protecting the threaded hole is provided between the threaded hole and the slide plate (6); and a positioning mechanism (5) for positioning the slide plate (6) is provided at the bottom of the slide plate (6).

3. The adjustable wind-resistant buckle adapted for angle steel tile hanging strips of sloping roofs according to claim 1 is characterized by: The rotating mechanism comprises a fixed seat (33) mounted on the top of the horizontal bar (1) and a rotating seat (31) connected to the bottom of the fixed bar (2); a rotating groove for the rotating seat (31) to rotate is provided on the top of the fixed seat (33); a rotating sleeve (36) is fixed inside the rotating groove; and a groove body for the rotating sleeve (36) to slide is provided on the outer wall of the rotating seat (31).

4. The adjustable wind-resistant buckle adapted for angle steel tile hanging strips of sloping roofs according to claim 3 is characterized by: The fixing mechanism comprises a plurality of fixing grooves provided at the top of the groove body and a telescopic block (38) arranged at the top of the rotating sleeve (36), the telescopic block (38) corresponding to the fixing grooves, a receiving groove for the telescopic block (38) to move is provided on one side of the fixing seat (33), a fixing rod is fixed on one side of the telescopic block (38), the fixing rod extends to one side of the fixing seat (33) and is fixed with a control board (35), a first spring (37) is connected between the telescopic block (38) and the receiving groove, and the first spring (37) is sleeved on the outer wall of the fixing rod.

5. The adjustable wind-resistant buckle adapted for angle steel tile hanging strips of sloping roofs according to claim 3 is characterized by: The reinforcement mechanism comprises a plurality of reinforcement blocks (32) fixed on the top of the rotating seat (31), the plurality of reinforcement blocks (32) are connected to the fixing bar (2), a plurality of reinforcement seats (34) are fixed to the bottom of the fixing seat (33), the reinforcement seats (34) are connected to the cross bar (1), and bolts are screwed between the reinforcement seats (34) and the cross bar (1).

6. The adjustable wind-resistant buckle adapted for the angle steel tile hanging strip of the inclined roof according to claim 2 is characterized by: The protective mechanism (4) comprises a protective seat (41) fixed on the top of the mounting plate (7) and a rotating plate (42) rotatably mounted on the top of the protective seat (41); a rotating shaft is mounted on the top of the protective seat (41); a mounting sleeve is provided on the outer wall of the rotating shaft, the mounting sleeve is connected to the rotating plate (42); a rotating knob (44) is fixed on the top of the rotating shaft; and a limiting mechanism for limiting the rotating knob (44) is provided between the rotating knob (44) and the protective seat (41).

7. The adjustable wind-resistant buckle adapted for angle steel tile hanging strips of sloping roofs according to claim 6 is characterized by: The limiting mechanism comprises a limiting seat (43) fixed to one side of the protective seat (41) and a limiting rod inserted into the limiting seat (43); a plurality of limiting holes for inserting the limiting rod are provided at the bottom of the rotating knob (44); and a control mechanism for controlling the limiting rod is provided between the limiting rod and the limiting seat (43).

8. The adjustable wind-resistant buckle adapted for angle steel tile hanging strips of sloping roofs according to claim 7 is characterized in that: The control mechanism comprises a fixing groove provided inside the limiting seat (43) and a baffle fixed at the bottom of the limiting rod, a second spring (45) is connected between the baffle and the fixing groove, a control rod (46) is fixed on one side of the baffle, and a moving groove for the control rod (46) to move is provided on one side of the limiting seat (43).

9. The adjustable wind-resistant buckle adapted for the angle steel tile hanging strip of the sloping roof according to claim 2 is characterized by: The positioning mechanism (5) comprises an extension plate (51) fixed to the bottom of the slide plate (6); a frame body (53) is fixed to one side of the extension plate (51); an insertion plate (55) is arranged between the frame body (53) and the extension plate (51); a plurality of positioning grooves for the insertion plate (55) to be inserted are provided on one side of the fixing strip (2); and a threaded mechanism for driving the insertion plate (55) to move is arranged between the insertion plate (55) and the frame body (53).

10. The adjustable wind-resistant buckle adapted for angle steel tile hanging strips of sloping roofs according to claim 9, characterized in that: The threaded mechanism comprises a threaded rod (56) threadedly connected to the inside of the frame body (53); a rotating disk (52) is fixed to one side of the threaded rod (56); a connecting sleeve is fixed to one side of the plug plate (55); a through slot for inserting the plug plate (55) is provided inside the extension plate (51); a reinforcement frame (54) is fixed to the top of the frame body (53); one end of the reinforcement frame (54) is connected to the fixing bar (2); and a triangular support plate is fixed to one side of the reinforcement frame (54).

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