A frame turning tool

Abstract

The present invention discloses a frame flipping tool, which relates to the field of frame processing technology, including a sliding mechanism and two flipping mechanisms, wherein the flipping mechanism includes a turntable assembly and a support assembly, wherein the support assembly includes an L-shaped seat, and a support plate is provided above the top surface of the L-shaped seat. The present invention rotates the knob at the top of the lifting screw to drive the lifting plate to slide along the side wall of the lifting column, thereby adjusting the height of the lifting plate, making it convenient for the lifting plate to drive the support plate to move, so that the support plate fits with the outer wall of the frame. When the frame flips, its two ends are arc-shaped structures, and the outer wall of the frame drives the support plate to deflect, so that the support plate tilts and fits with the frame. The spiral sleeve is rotated to drive the fastening spring to be squeezed first, so that the side wall of the double-headed limit rod fits with the side wall of the fastening threaded cylinder, thereby achieving the effect of fixing the support plate, facilitating the support of both ends of the frame, and improving the stability of the frame flipping.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle frame processing, in particular to a vehicle frame turning tool. Background Art

[0002] The vehicle frame, commonly known as the girder, is a framework structure that spans the front and rear axles of a vehicle. It serves as the vehicle's foundation. It typically consists of two longitudinal beams and several transverse beams, supporting the wheels via the suspension, front axle, and rear axle. When welding the frame beams, the frame must be flipped 180 degrees to facilitate welding the bottom connector.

[0003] In the prior art, such as the Chinese patent number: CN106698196B "A RV frame flipping tool", includes a main flip frame, a secondary flip frame, a flip drive mechanism and a flip follower mechanism, wherein the main flip frame includes a flip beam, an offset angle beam, a fork pin joint, two anti-deflection guardrails and two fork-shaped baffles; the flip hoist of the flip drive mechanism is hung on the first lifting hoist, and the chain of the flip hoist is wrapped around the offset angle beam, the anti-deflection guardrail, and the fork-shaped baffle, and is positioned and connected with the locating pins on the fork-shaped baffle; the secondary flip frame includes an auxiliary beam, a support shaft and two pin-connected shafts, and a rotating wheel is provided on the support shaft, and the lifting ring of the flip follower mechanism is fixed on the second lifting hoist, and the lifting ring hangs the rotating wheel.

[0004] However, in the prior art, when the frame is flipped, the top end of the frame is an arc-shaped streamlined structure, and the bottom end is a straight structure. As a result, the frame is stable when placed upright. When the top end is placed downward, the parts at both ends cannot be effectively supported by the support platform, resulting in instability at both ends of the frame after flipping, thereby affecting the stability of the frame during the subsequent welding process. Summary of the Invention

[0005] The object of the present invention is to provide a vehicle frame flipping tool to solve the problem proposed in the above-mentioned background art that when the vehicle frame is flipped, the top end of the frame is an arc-shaped streamlined structure and the bottom end is a straight structure, which results in the frame being stable when placed upright. When the top end is placed downward, the parts at both ends cannot be effectively supported by the support platform, resulting in instability at both ends of the frame after flipping, thereby affecting the stability of the frame during the subsequent welding process.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a frame turning tool, comprising a sliding mechanism and two turning mechanisms, the turning mechanism comprising a turntable assembly and a support assembly, the support assembly comprising an L-shaped seat, a support plate being provided above the top surface of the L-shaped seat, stabilizing assemblies being provided at both ends of the support plate, the side wall of the L-shaped seat being fixedly connected to a limiting circular ring, the turntable assembly comprising a rotating disk, a positioning circular rail being fixedly connected to the side wall of the rotating disk adjacent to the L-shaped seat, the inner side wall of the positioning circular rail being rotatably engaged with the outer side wall of the limiting circular ring;

[0007] The stabilizing assembly includes a stabilizing plate, the top end of the stabilizing plate is rotatably connected to a lifting screw, the outer side wall of the lifting screw is threadedly connected to the lifting plate, the side wall of the lifting plate is threadedly connected to a fastening threaded cylinder, the inner side wall of the fastening threaded cylinder is slidably connected to a double-headed limiting rod, the outer side wall of the double-headed limiting rod is provided with a fastening spring, one end of the fastening spring is fixedly connected to the side wall of the double-headed limiting rod, the other end of the fastening spring is fixedly connected to the fastening threaded cylinder, and the outer side wall of the double-headed limiting rod is fixedly connected to the support plate.

[0008] Preferably, the sliding mechanism includes a slider base, the top of the slider base is fixedly connected to a guide rail, and the inner wall of the guide rail is slidably connected to a T-shaped slider. By sliding the T-shaped slider inside the guide rail, the other L-shaped seat of the T-shaped slider is moved, thereby adjusting the distance between the two L-shaped seats, which is convenient for fixing frames of different specifications.

[0009] Preferably, a second support column is fixedly connected between the top end of the T-shaped slider and the L-shaped seat at the corresponding position, and a first support column is fixedly connected between the top surface of the slider base and the L-shaped seat at the corresponding position.

[0010] Preferably, a limiting hole is provided on the outer side wall of the slider base, and the inner side wall of the limiting hole is slidably connected to a limiting column, one end of the limiting column is fixedly connected to a first positioning seat, and the other end of the limiting column is fixedly connected to a second positioning seat. When in use, a sliding mechanism is provided at the bottom end of the flipping mechanism and a guide rail is provided at the top end of the slider base, thereby avoiding the guide rail. When the specifications of the flipping frame are different, the lengths of the two ends thereof are also different.

[0011] Preferably, one end of the first positioning seat is fixedly connected to a cylinder, the output end of the cylinder passes through the outer wall of the first positioning seat and is fixedly connected to the side wall of the slider base, the bottom ends of the first positioning seat and the second positioning seat are fixedly connected to a bottom plate, and the cylinder is started so that the output end of the cylinder drives the slider base to move, so that the slider base slides on the limit column, thereby achieving the effect of adjusting the position of the frame on the sliding mechanism.

[0012] Preferably, a lifting groove is provided at the center of the outer wall of the rotating disk, and two connecting columns are slidably connected to the inner side of the lifting groove, one end of one of the connecting columns is fixedly connected to a fixed seat, and one end of the other connecting column is fixedly connected to a lifting seat.

[0013] Preferably, the outer side wall of the lifting seat is threadedly connected with a clamping screw, the bottom end of the clamping screw is rotatably connected to the top surface of the fixed seat, and the outer side wall of the rotating disk is fixedly connected with round handles at both outer sides of the lifting slot. Round handles are provided at both ends of the rotating disk, which makes it convenient to rotate the rotating disk by holding the round handles, thereby realizing the flipping action of the frame between the two rotating disks.

[0014] Preferably, adjacent ends of the connecting columns are fixedly connected to splints, the top of the stabilizing plate is fixedly connected to a lifting column, and the lifting column is slidably connected to the lifting plate. By arranging the lifting column on one side of the stabilizing plate, the lifting position of the lifting plate is limited.

[0015] Preferably, both ends of the double-headed limiting rod are fixedly connected with a circular baffle, and one end of the fastening threaded cylinder is fixedly connected with a spiral sleeve.

[0016] Preferably, the top end of the lifting screw and the top end of the clamping screw are fixedly connected with a knob, the outer wall of the splint is provided with anti-slip stripes, and the outer wall of the support plate is paved with a sponge foam board. By providing anti-slip stripes on the outer wall of the splint, the friction between the two splints is increased, making the frame more stable when flipping.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, by rotating the knob at the top of the lifting screw, the lifting screw drives the lifting plate to slide along the side wall of the lifting column to achieve the adjustment of the height of the lifting plate, which is convenient for the lifting plate to drive the support plate to move so that the support plate fits with the outer wall of the frame. When the frame is flipped over, its two ends are arc-shaped structures, and the outer wall of the frame drives the support plate to deflect, so that the support plate is tilted and fits with the frame. The spiral sleeve is rotated to drive the fastening spring to be squeezed first, so that the side wall of the double-headed limit rod fits with the side wall of the fastening threaded cylinder, thereby achieving the effect of fixing the support plate, facilitating the support of both ends of the frame and improving the stability of the frame flipping.

[0019] 2. In the present invention, a guide rail is provided at the top of the slider base. When the specifications of the flip frame are different, the lengths of the two ends thereof are also different. By sliding the T-shaped slider inside the guide rail, the other L-shaped seat of the T-shaped slider is moved, thereby adjusting the distance between the two L-shaped seats, making it easier to fix frames of different specifications and improving the applicability of the flip tooling.

[0020] 3. In the present invention, by starting the cylinder, the output end of the cylinder drives the slider base to move, so that the slider base slides on the limit column, thereby achieving the effect of adjusting the position of the frame on the sliding mechanism. By providing round handles at both ends of the rotating disk, it is convenient to rotate the rotating disk by holding the round handles, thereby realizing the flipping action of the frame between the two rotating disks. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a vehicle frame turning tool according to the present invention;

[0022] Figure 2 This is a schematic structural diagram of a sliding mechanism of a vehicle frame turning tool of the present invention;

[0023] Figure 3 This is a schematic side structural diagram of a turning mechanism of a vehicle frame turning tool of the present invention;

[0024] Figure 4 This is a schematic structural diagram of a turntable assembly of a vehicle frame turning tool of the present invention;

[0025] Figure 5 This is a half-section schematic diagram of a turntable assembly of a vehicle frame turning tool of the present invention;

[0026] Figure 6 This is a schematic diagram of the top structure of a support assembly of a vehicle frame turning tool of the present invention;

[0027] Figure 7 This is a schematic structural diagram of a stabilizing component of a vehicle frame flipping tool of the present invention;

[0028] Figure 8 This is an exploded rendering of the structure of the stabilizing component of a vehicle frame flipping tool according to the present invention.

[0029] In the picture:

[0030] 1. Base plate; 2. First positioning seat; 3. Cylinder; 4. Limiting column;

[0031] 5. Sliding mechanism; 51. Slider base; 52. Limiting hole; 53. Guide rail; 54. First support column; 55. Second support column; 56. T-shaped slider;

[0032] 6. Flipping mechanism; 61. Turntable assembly; 611. Rotating disk; 612. Lifting slot; 613. Round handle; 614. Positioning circular rail;

[0033] 62. Support assembly; 621. L-shaped seat; 622. Limiting ring;

[0034] 63. Stabilizing assembly; 631. Stabilizing plate; 632. Lifting plate; 633. Lifting screw; 634. Lifting column; 635. Screw sleeve; 636. Fastening spring; 637. Double-ended limiting rod; 638. Fastening threaded barrel;

[0035] 64. Fixed seat; 65. Clamping screw; 66. Lifting seat; 67. Clamping plate; 68. Connecting column; 69. Support plate; 7. Second positioning seat. Implementation Method

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention. Example

[0037] Reference Figure 1-8 As shown: a frame flip tool, including a sliding mechanism 5 and two flip mechanisms 6, the flip mechanism 6 includes a turntable assembly 61 and a support assembly 62, the support assembly 62 includes an L-shaped seat 621, a support plate 69 is provided above the top surface of the L-shaped seat 621, and a stabilizing assembly 63 is provided at both ends of the support plate 69. The side wall of the L-shaped seat 621 is fixedly connected to the limiting ring 622, the turntable assembly 61 includes a rotating disk 611, and the side wall of the adjacent L-shaped seat 621 of the rotating disk 611 is fixedly connected to the positioning circular rail 614, and the inner side wall of the positioning circular rail 614 is rotatably connected to the outer side wall of the limiting circular ring 622. When in use, by The frame is placed between the L-shaped seats 621 and clamped and fixed. By arranging a rotating disk 611 on the outer side walls of the two L-shaped seats 621, when it is necessary to flip the clamped frame, the rotating disk 611 is rotated so that the rotating disk 611 rotates inside the limiting ring 622 through the positioning circular rail 614 on the outer side wall. The limiting circular ring 622 is a circular guide rail with a T-shaped groove inside, so that the positioning circular rail 614 can rotate under the center trajectory of the limiting circular ring 622. The corresponding cross section of the positioning circular rail 614 is a T-shaped structure, which makes it easy for the positioning circular rail 614 to be clamped inside the limiting circular ring 622 when rotating, thereby preventing the turntable assembly 61 and the support assembly 62 from detaching.

[0038] The stabilizing assembly 63 includes a stabilizing plate 631, the top of which is rotatably connected to a lifting screw 633, the outer wall of which is threadedly connected to a lifting plate 632, the side wall of which is threadedly connected to a fastening threaded cylinder 638, the inner wall of which is slidably connected to a double-headed limiting rod 637, the outer wall of which is provided with a fastening spring 636, one end of which is fixedly connected to the side wall of the double-headed limiting rod 637, the other end of which is fixedly connected to the fastening threaded cylinder 638, the outer wall of which is fixedly connected to the supporting plate 69, and when the vehicle frame is flipped over, the lifting screw 633 on one side of the stabilizing plate 631 is rotated to cause the lifting screw 633 to drive the threaded lifting plate 632 to move, so that the lifting plate 632 drives the connected double-headed limiting rod 637 to move up and down, so as to facilitate the two The support plate 69 between the double-ended limit rods 637 is height-adjustable. When the vehicle frame is flipped, its two ends are in an arc structure, so that the outer wall of the vehicle frame fits together with the support plate 69, so that the support plate 69 is deflected by the action of the vehicle frame, which makes it easier for the support plate 69 to tilt to a certain angle so as to better support the side wall of the vehicle frame. When the vehicle frame is flipped over, before the clamping of the clamping plate 67 on the vehicle frame is cancelled, the fastening threaded cylinder 638 is rotated toward the inside of the lifting plate 632, so that the fastening threaded cylinder 638 drives the fastening spring 636 at one end to move toward the middle position, so that the elastic force of the fastening spring 636 drives the double-ended limit rod 637 to move inward, so that the circular baffle at the outer end of the double-ended limit rod 637 fits tightly with the spiral sleeve 635, thereby preventing the double-ended limit rod 637 from rotating inside the fastening threaded cylinder 638, so that the inclination angle of the support plate 69 remains stable, thereby achieving the function of stable support for the vehicle frame.

[0039] according to Figure 1-4 As shown, the sliding mechanism 5 includes a slider base 51, the top of which is fixedly connected to a guide rail 53, and the inner sidewall of the guide rail 53 is slidably connected to a T-shaped slider 56. A second support column 55 is fixedly connected between the top of the T-shaped slider 56 and an L-shaped seat 621 at a corresponding position, and a first support column 54 is fixedly connected between the top surface of the slider base 51 and the L-shaped seat 621 at a corresponding position. A limiting hole 52 is provided on the outer wall of the slider base 51, and the inner wall of the limiting hole 52 is slidably connected to the limiting column 4. One end of the limiting column 4 is fixedly connected to the first positioning seat 2, and the other end of the limiting column 4 is fixedly connected to the second positioning seat 7. When in use, a sliding mechanism 5 is provided at the bottom end of the flipping mechanism 6, and a guide rail 53 is provided at the top end of the slider base 51, thereby avoiding the guide rail 53. When the specifications of the flipping frame are different, the lengths of the two ends thereof are also different. By sliding the T-shaped slider 56 inside the guide rail 53, the other L-shaped seat 621 of the T-shaped slider 56 is moved, thereby adjusting the distance between the two L-shaped seats 621, which is convenient for fixing frames of different specifications.

[0040] according to Figure 1 、 Figure 2 and Figure 5 As shown, one end of the first positioning seat 2 is fixedly connected to the cylinder 3. The output end of the cylinder 3 passes through the outer wall of the first positioning seat 2 and is fixedly connected to the side wall of the slider base 51. The bottom ends of the first positioning seat 2 and the second positioning seat 7 are fixedly connected to the base plate 1. A lifting groove 612 is defined at the center of the outer wall of the rotating disk 611. Two connecting posts 68 are slidably connected to the inner side of the lifting groove 612. One end of the connecting post 68 is fixedly connected to the fixed seat 64, and the other end of the connecting post 68 is fixedly connected to the lifting seat 66. The outer wall of the lifting seat 66 is threadedly connected with a clamping screw 65, and the bottom end of the clamping screw 65 is rotatably connected to the top surface of the fixed seat 64. The outer wall of the rotating disk 611 is fixedly connected with round handles 613 at the two outer sides of the lifting groove 612. When in use, a cylinder 3 is set at the bottom end of the sliding mechanism 5. When it is necessary to drive the fixed frame to move, the cylinder 3 is started so that the output end of the cylinder 3 drives the slider base 51 to move, so that the slider base 51 slides on the limit column 4, thereby achieving the effect of adjusting the position of the frame on the sliding mechanism 5. By setting round handles 613 at both ends of the rotating disk 611, it is convenient to hold the round handles 613 to rotate the rotating disk 611, thereby realizing the flipping action of the frame between the two rotating disks 611.

[0041] according to Figure 4 、 Figure 7 and Figure 8 As shown, the adjacent ends of the connecting posts 68 are fixedly connected to the clamping plates 67, the top of the stabilizing plate 631 is fixedly connected to the lifting posts 634, and the lifting posts 634 are slidably connected to the lifting plate 632. The two ends of the double-ended limiting rod 637 are fixedly connected to the circular baffles, and one end of the fastening threaded cylinder 638 is fixedly connected to the spiral sleeve 635. The top of the lifting screw 633 and the top of the clamping screw 65 are fixedly connected with a knob, and the outer wall of the splint 67 is provided with anti-slip stripes, and the outer wall of the support plate 69 is covered with a sponge foam board. When in use, a lifting groove 612 is provided in the center of the rotating disk 611, and a fixed seat 64 and a lifting seat 66 are provided inside the lifting groove 612, so that the fixed seat 64 is fixed to one end of the lifting groove 612. The lifting seat 66 adjusts the height position through the clamping screw 65 and slides inside the lifting groove 612, so that the distance between the two splints 67 is adjusted, which is convenient for quickly clamping the two ends of the frame between the splints 67. By arranging a lifting column 634 on one side of the stabilizing plate 631, the lifting position of the lifting plate 632 is limited. By providing anti-slip stripes on the outer wall of the splint 67, the friction between the two splints 67 is increased, making the frame more stable when flipping.

[0042] The method of use and working principle of this device are as follows: when in use, the vehicle frame is placed between the two L-shaped seats 621 on the slider base 51, and the T-shaped slider 56 is slid on the guide rail 53, so that the T-shaped slider 56 drives one L-shaped seat 621 to move toward the other L-shaped seat 621, so that the two clamping plates 67 on the two L-shaped seats 621 are located at both ends of the vehicle frame;

[0043] The clamping screw 65 is rotated to drive the lifting seat 66 to move, and the lifting seat 66 drives the clamping plate 67 to move through the connecting column 68, so that the two clamping plates 67 clamp the frame in the middle. The round handle 613 is rotated to drive the rotating disk 611 to rotate, and the rotating disk 611 drives the frame to rotate, so as to achieve the effect of flipping the frame.

[0044] The lifting screw 633 is rotated to drive the lifting plate 632 upward, and the lifting plate 632 drives the support plate 69 to move, so that the support plate 69 fits against the outer wall of the frame. The two ends of the frame are in an arc structure, and the support plate 69 is deflected by the action of the frame, so that the support plate 69 can be tilted at a certain angle to better support the side wall of the frame.

[0045] After the support plate 69 is completely fitted to the bottom end of the frame, the fastening threaded cylinder 638 is rotated toward the inside of the lifting plate 632, so that the fastening threaded cylinder 638 drives the fastening spring 636 at one end to move toward the middle position, and the elastic force of the fastening spring 636 drives the double-headed limiting rod 637 to move inward, so that the circular baffle at the outer end of the double-headed limiting rod 637 is tightly fitted with the spiral sleeve 635, so that the double-headed limiting rod 637 limits the middle support plate 69 to prevent the support plate 69 from flipping over again.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vehicle frame turning tool, comprising a sliding mechanism (5) and two turning mechanisms (6), characterized in that: The turning mechanism (6) includes a turntable assembly (61) and a support assembly (62), the support assembly (62) includes an L-shaped seat (621), a support plate (69) is provided above the top surface of the L-shaped seat (621), and stabilizing assemblies (63) are provided at both ends of the support plate (69), the side wall of the L-shaped seat (621) is fixedly connected to a limiting circular ring (622), the turntable assembly (61) includes a rotating disk (611), and the side wall of the rotating disk (611) adjacent to the L-shaped seat (621) is fixedly connected to a positioning circular rail (614), and the inner side wall of the positioning circular rail (614) is rotatably engaged with the outer side wall of the limiting circular ring (622); The stabilizing assembly (63) includes a stabilizing plate (631), the top end of the stabilizing plate (631) is rotatably connected to a lifting screw (633), the outer wall of the lifting screw (633) is threadedly connected to a lifting plate (632), the side wall of the lifting plate (632) is threadedly connected to a fastening threaded cylinder (638), the inner wall of the fastening threaded cylinder (638) is slidably connected to a double-headed limiting rod (637), the outer wall of the double-headed limiting rod (637) is provided with a fastening spring (636), one end of the fastening spring (636) is fixedly connected to the side wall of the double-headed limiting rod (637), the other end of the fastening spring (636) is fixedly connected to the fastening threaded cylinder (638), and the outer wall of the double-headed limiting rod (637) is fixedly connected to the support plate (69).

2. The frame turning tool according to claim 1, characterized in that: The sliding mechanism (5) comprises a slider base (51), the top end of the slider base (51) is fixedly connected to a guide rail (53), and the inner side wall of the guide rail (53) is slidably connected to a T-shaped slider (56).

3. The frame turning tool according to claim 2, characterized in that: A second support column (55) is fixedly connected between the top end of the T-shaped slider (56) and the L-shaped seat (621) at the corresponding position, and a first support column (54) is fixedly connected between the top surface of the slider base (51) and the L-shaped seat (621) at the corresponding position.

4. The frame turning tool according to claim 2, characterized in that: The outer wall of the slider base (51) is provided with a limiting hole (52), the inner wall of the limiting hole (52) is slidably connected to a limiting column (4), one end of the limiting column (4) is fixedly connected to a first positioning seat (2), and the other end of the limiting column (4) is fixedly connected to a second positioning seat (7).

5. The frame turning tool according to claim 4, characterized in that: One end of the first positioning seat (2) is fixedly connected to a cylinder (3), an output end of the cylinder (3) passes through the outer wall of the first positioning seat (2) and is fixedly connected to the side wall of the slider base (51), and the bottom ends of the first positioning seat (2) and the second positioning seat (7) are fixedly connected to a bottom plate (1).

6. The frame turning tool according to claim 1, characterized in that: A lifting groove (612) is provided at the center of the outer wall of the rotating disk (611), and two connecting columns (68) are slidably connected to the inner side of the lifting groove (612), wherein one end of one of the connecting columns (68) is fixedly connected to a fixed seat (64), and one end of the other connecting column (68) is fixedly connected to a lifting seat (66).

7. The frame turning tool according to claim 6, characterized in that: The outer wall of the lifting seat (66) is threadedly connected to a clamping screw (65), the bottom end of the clamping screw (65) is rotatably connected to the top surface of the fixed seat (64), and the outer wall of the rotating disk (611) is fixedly connected to round handles (613) at two outer positions of the lifting slot (612).

8. The frame turning tool according to claim 7, characterized in that: Adjacent ends of the connecting columns (68) are fixedly connected to a clamping plate (67), the top end of the stabilizing plate (631) is fixedly connected to a lifting column (634), and the lifting column (634) is slidably connected to the lifting plate (632).

9. The frame turning tool according to claim 1, characterized in that: Both ends of the double-ended limiting rod (637) are fixedly connected to circular baffles, and one end of the fastening threaded cylinder (638) is fixedly connected to a spiral sleeve (635).

10. The vehicle frame turning tool according to claim 8, characterized in that: The top end of the lifting screw (633) and the top end of the clamping screw (65) are both fixedly connected with a knob, the outer wall of the clamping plate (67) is provided with anti-slip stripes, and the outer wall of the supporting plate (69) is paved with a sponge foam board.

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