Semi-automatic cover plate hoisting and paving equipment

Abstract

The invention relates to the technical field of railway construction, in particular to semi-automatic cover plate hoisting and paving equipment which comprises a paving vehicle, the paving vehicle is located on a railway platform, two ballast beds are symmetrically arranged above the railway platform, cable grooves are formed in the sides, located on the two ballast beds, of the railway platform, and the paving vehicle is arranged on the ballast beds in a straddling mode. By arranging the paving vehicle with the rotating supporting assembly and the grabbing assembly, in the whole railway construction process, the paving vehicle can stably move along a ballast bed, then the rotating supporting assembly and the grabbing assembly are matched, a cover plate between railway lines can be stably and rapidly moved to the positions above cable grooves in the two sides, manpower is saved, and the construction efficiency is improved. And the construction efficiency of the cable cover plate is improved. In addition, when the position of the cover plate is adjusted and changed, the multifunctional installation assembly is matched, excessive rotation loss of the second control cylinder can be avoided, and later replacement and maintenance convenience is improved.

Description

Technical Field

[0001] The invention relates to the technical field of railway construction, and in particular to a semi-automatic lifting and paving equipment for cover plates. Background Art

[0002] CRTSⅢ slab ballastless track and CRTSⅠ double-block ballastless track are the main high-speed rail track forms in my country. After the railway track is constructed, it is necessary to lay covers on the cable troughs on both sides of the line.

[0003] In the prior art, when laying the cable troughs on both sides of the railway line, the construction is mainly carried out by manual transportation. However, since the cable trough cover is a prefabricated concrete slab, it is mainly located in the center of the line when it is transported to the railway line. In addition, since the ballast is higher than the table top, there is a high protective wall between the cable trough and the ballast. When the cover of the cable trough is repeatedly transported, a lot of manpower will be consumed, which seriously affects the construction efficiency and is not conducive to the protection of the finished product. Summary of the invention

[0004] The purpose of the present invention is to provide a semi-automatic lifting and paving equipment for cover plates to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a semi-automatic lifting and paving equipment for cover plates, comprising a paving vehicle:

[0006] The paving vehicle is located on a railway platform, two ballasts are symmetrically arranged above the railway platform, and the railway platform is provided with cable troughs on one side of the two ballasts. The paving vehicle is straddled on the ballasts, and the paving vehicle includes a frame, and a traveling assembly is provided at the lower end of the frame, and the traveling assembly includes four mobile control boxes;

[0007] A rotating support assembly, the rotating support assembly is arranged at the center of the upper end of the frame, the rotating support assembly comprises a main column, a first rotating bracket, a second rotating bracket and a height control arm, the main column is vertically arranged at the upper end of the frame, and the first rotating bracket is movably arranged at one side of the main column;

[0008] A gripping assembly, the gripping assembly comprising a clamping jaw support and two clamping control cylinders, a second control cylinder is vertically provided at the upper end of the clamping jaw support, and the upper end of the second control cylinder is connected to the height control arm;

[0009] A multifunctional mounting component is arranged at the connection position between the clamping jaw bracket and the second control cylinder. The multifunctional mounting component includes a mounting crossbeam, an assembly box, a mounting ball head rod and an anti-slip baffle.

[0010] Preferably, the four mobile control boxes are symmetrically arranged on both sides of the lower end of the frame, and the lower ends of the four mobile control boxes are provided with running wheels, and the lower ends of the four running wheels are respectively in contact with the upper end of the railway platform.

[0011] Preferably, one side of the first rotating bracket is horizontally rotatably sleeved on the upper end of the main column through a bearing, a swing pin is provided on the side of the first rotating bracket away from the main column, the second rotating bracket is movable with the first rotating bracket through the swing pin, and two auxiliary support wheels are provided on the side of the outer peripheral surface of the first rotating bracket close to the main column and the side of the walking wheel close to the roadbed through the wheel frame.

[0012] Preferably, the upper and lower ends of the second rotating bracket away from the first rotating bracket are respectively provided with a height control arm and a first control cylinder through a pin shaft, and the side of the first control cylinder away from the second rotating bracket is movably connected to the lower end of the height control arm through a pin shaft.

[0013] Preferably, the second control cylinder is movably connected to the side of the height control arm away from the second rotating bracket through a pin shaft, the clamping jaw bracket is horizontally arranged below the second control cylinder, a manual handrail is provided on one side of the clamping jaw bracket, and an operation panel is provided on one side of the manual handrail.

[0014] Preferably, the two clamping control cylinders are horizontally arranged on both sides of the upper end of the clamping jaw bracket, and a movable clamping plate is vertically provided on one side of the two clamping control cylinders through bolts. Two guide beams are horizontally symmetrically provided on both sides of the movable clamping plate close to the clamping jaw bracket. The clamping jaw bracket is located on one side of the guide beam with a guide groove, and the two guide beams are movably connected to the guide groove.

[0015] Preferably, a reference clamping plate is vertically provided on one side of the lower end of the clamping jaw bracket away from the movable clamping plate, and rubber gaskets are provided on the opposite sides of the reference clamping plate and the movable clamping plate through bolts.

[0016] Preferably, the mounting beam is horizontally arranged at the center of the clamping claw bracket, and the assembly box is vertically arranged at the upper end center of the mounting beam, a ball groove is opened in the assembly box, and an adaptation groove is opened at the upper end of the ball groove through the assembly box, and a mounting ball head rod is provided at the lower end of the second control cylinder, and the mounting ball head rod is rotatably plugged into the ball groove of the assembly box, and a plurality of self-rotating balls are symmetrically arranged at the upper end of the ball groove, and one side of the plurality of self-rotating balls is respectively in contact with the mounting ball head rod.

[0017] Preferably, a mounting hole is provided on one side of the ball groove and passes through the assembly box. The diameter of the mounting hole is larger than the diameter of the mounting ball head rod, and a narrow groove is provided in the mounting hole connected to the adaption groove. When the mounting ball head rod contacts the rotating ball, the mounting hole and the mounting ball head rod are misaligned.

[0018] Preferably, a plate groove is provided in the installation beam and is horizontally connected to the ball groove on one side of the assembly box, and an anti-slip baffle is horizontally movably inserted in the plate groove. When the installation ball head rod is placed in the ball groove, the anti-slip baffle is horizontally inserted in the ball groove and abuts against the lower end of the installation ball head rod. Two supporting springs are horizontally symmetrically provided on one side of the anti-slip baffle placed in the plate groove, and strip grooves are respectively penetrated on the upper and lower sides of the plate groove. An anti-slip pull plate is vertically provided on one side of the anti-slip baffle located in the plate groove, and two strip grooves are respectively penetrated and inserted on both sides of the anti-slip pull plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] By setting up a laying vehicle with a rotating support assembly and a grabbing assembly, the laying vehicle can be stably moved along the roadbed during the entire railway construction process, and then the cover between the railway lines can be stably and quickly moved to above the cable troughs on both sides in conjunction with the rotating support assembly and the grabbing assembly, saving manpower and improving the construction efficiency of the cable cover. In addition, when adjusting the position of the cover, the multi-functional installation assembly can be used to avoid excessive rotation loss of the second control cylinder and facilitate subsequent replacement and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention in construction state;

[0022] Figure 2 For the present invention Figure 1 Schematic diagram of part A;

[0023] Figure 3 For the present invention Figure 2 Schematic diagram of part B;

[0024] Figure 4 For the present invention Figure 2 Schematic diagram of the C part;

[0025] Figure 5 This is a schematic diagram of the structure of the paving vehicle of the present invention;

[0026] Figure 6 For the present invention Figure 5 Schematic diagram of the D part;

[0027] Figure 7 For the present invention Figure 5 Schematic diagram of part E;

[0028] Figure 8 For the present invention Figure 5 Schematic diagram of the F part;

[0029] Fig. 9 This is a schematic diagram of the connection structure between the clamping jaw support and the second control cylinder of the present invention;

[0030] Fig.10 For the present invention Fig. 9 Schematic diagram of the G part;

[0031] Fig.11 For the present invention Fig. 9 Schematic diagram of the H part;

[0032] Fig.12 This is a schematic diagram of the crossbeam installation structure of the present invention.

[0033] In the figure: railway platform 1, roadbed 2, cable trough 3, frame 4, walking wheel 5, main column 7, first rotating bracket 8, second rotating bracket 801, first control cylinder 9, height control arm 10, second control cylinder 11, clamping claw bracket 12, clamping control cylinder 13, movable clamping plate 14, guide beam 15, reference clamping plate 16, rubber gasket 17, operation panel 18, movable control box 19, auxiliary support wheel 20, air compressor unit 21, electric control box 22, generator box 23, mounting crossbeam 24, assembly box 25, mounting ball head rod 26, self-rotating ball 27, mounting hole 28, anti-slip baffle 31, support spring 32, anti-slip pull plate 33, stabilizing guide rod 34, guide sleeve 35. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Please see attached Figure 1-Figure 12 , this application provides the following technical solutions.

[0036] Embodiment 1: A semi-automatic lifting and paving equipment for cover plates, comprising a paving vehicle, wherein the paving vehicle is located on a railway platform 1, and two roadbeds 2 are symmetrically arranged above the railway platform 1. A cable trough 3 is provided on one side of the two roadbeds 2 of the railway platform 1, and the paving vehicle is straddled on the roadbed 2. The paving vehicle comprises a frame 4, and a traveling assembly is provided at the lower end of the frame 4. The traveling assembly comprises four mobile control boxes 19, and the four mobile control boxes 19 are symmetrically arranged on both sides of the lower end of the frame 4, and the lower ends of the four mobile control boxes 19 are provided with traveling wheels 5, and the lower ends of the four traveling wheels 5 are respectively in contact with the upper end of the railway platform 1, and the traveling wheels 5 are driven and controlled by a servo brushless motor. During the drive control, manual remote control walking can be performed in conjunction with a remote control module. The frame 4 is equipped with a magnetic coil brake module of the prior art, and the span of the frame 4 can be 2.8 meters for a single line.

[0037] A rotating support assembly is provided to facilitate movement of the cover of the cable trough 3. The rotating support assembly is provided at the center of the upper end of the frame 4. The rotating support assembly includes a main column 7, a first rotating bracket 8, a second rotating bracket 801 and a height control arm 10. The main column 7 is vertically provided at the upper end of the frame 4. The first rotating bracket 8 is movably provided at one side of the main column 7. One side of the first rotating bracket 8 is horizontally rotatably sleeved on the upper end of the main column 7 through a bearing. A swing pin is provided on the side of the first rotating bracket 8 away from the main column 7. The second rotating bracket 801 is movably connected to the first rotating bracket 8 through the swing pin. The outer peripheral surface side of the first rotating bracket 8 close to the main column 7 and the side of the walking wheel 5 close to the roadbed 2 are both provided with two Auxiliary support wheel 20, the second rotating bracket 801 is away from the first rotating bracket 8, and the upper and lower ends are respectively connected by pins to provide a height control arm 10 and a first control cylinder 9. The first control cylinder 9 is away from the second rotating bracket 801 and is connected to the lower end of the height control arm 10 by a pin. The cover of the cable trough 3 is placed between the two road beds 2 when it is not laid. When the cover needs to be moved, the first rotating bracket 8 and the second rotating bracket 801 can be adaptively rotated through the support of the main column 7 to move the height control arm 10 to a suitable position. The first control cylinder 9 can control the elevation angle of the height control arm 10 to facilitate the adjustment of the height of the height control arm 10.

[0038] A grabbing assembly is provided to cooperate with the height control arm 10 to grab and move the cover plate. The grabbing assembly includes a clamping jaw bracket 12 and two clamping control cylinders 13. A second control cylinder 11 is vertically provided on the upper end of the clamping jaw bracket 12. The upper end of the second control cylinder 11 is connected to the height control arm 10. The second control cylinder 11 is movably connected to the side of the height control arm 10 away from the second rotating bracket 801 through a pin shaft. The clamping jaw bracket 12 is horizontally arranged below the second control cylinder 11. A manual handrail is provided on one side of the clamping jaw bracket 12. An operation panel 18 is provided on one side of the manual handrail. The two clamping control cylinders 13 are respectively horizontally arranged on both sides of the upper end of the clamping jaw bracket 12. A movable clamp 14 is vertically provided on one side of the two clamping control cylinders 13 through bolts. The movable clamp 14 is close to the clamping jaw bracket Two guide beams 15 are horizontally symmetrically arranged on both sides of 12, and a guide groove is provided on one side of the guide beam 15 of the clamping jaw bracket 12, and the two guide beams 15 are respectively movably plugged into the guide grooves, and a reference clamping plate 16 is vertically arranged on the side of the lower end of the clamping jaw bracket 12 away from the movable clamping plate 14, and rubber gaskets 17 are provided on the opposite sides of the reference clamping plate 16 and the movable clamping plate 14 through bolts. When the height control arm 10 moves to the top of the unlaid cover plate, the second control cylinder 11 is telescopically controlled to make the clamping jaw bracket 12 close to the cover plate, and then the clamping control cylinder 13 controls the movable clamping plate 14 to be away from the reference clamping plate 16, so that the cover plate is between the two rubber gaskets 17, and the clamping control cylinder 13 retracts and clamps the cover plate, and the cover plate is moved by the manual handrail to perform semi-automatic paving;

[0039] The first control cylinder 9 and the second control cylinder 11 control the lifting height of the clamp bracket 12 to be greater than 1 meter, ensuring that the clamp can smoothly pass through the protective wall with a maximum height of 0.96 meters during the laying process;

[0040] An air compressor unit 21 , an electric control box 22 and a power generation box 23 are respectively arranged above the frame 4 , which are used to provide electric energy for the frame 4 to travel, and to provide power for the first control cylinder 9 and the second control cylinder 11 .

[0041] In this embodiment: when it is necessary to lay a cover plate on the top of the cable trough 3, the frame 4 is controlled by remote control to move along the road bed 2. When it reaches the cover plate position, the manual handrail is held to control the position change of the first rotating bracket 8, 801 and the height control arm 10, so that the clamping claw bracket 12 is directly above the cover plate, and then the first control cylinder 9 and the second control cylinder 11 control the clamping claw bracket 12 to descend. When the cover plate is between the reference clamping plate 16 and the movable clamping plate 14, the clamping control cylinder 13 controls the movable clamping plate 14 to move, so that the cover plate is stably in a clamped state. Similarly, by controlling the position of the first rotating bracket 8, the second rotating bracket 801 and the height control arm 10, the cover plate is moved to directly above the cable trough 3, the cover plate is lowered and placed on the cable trough 3, and the final manual adjustment is performed, saving time and effort.

[0042] Embodiment 2: On the basis of embodiment 1, a multifunctional mounting assembly is provided to facilitate the installation and disassembly of the clamping jaw bracket 12 and the second control cylinder 11, and to avoid unnecessary rotation loss of the cylinder body and telescopic rod of the second control cylinder 11 during the movement of the clamping jaw bracket 12. The multifunctional mounting assembly is provided at the connection position between the clamping jaw bracket 12 and the second control cylinder 11. The multifunctional mounting assembly includes a mounting beam 24, an assembly box 25, a mounting ball head rod 26 and an anti-slip baffle 31. The mounting beam 24 is horizontally arranged at the center of the clamping jaw bracket 12, and the assembly box 25 is vertically arranged at the upper end center of the mounting beam 24. A ball groove is provided in the assembly box 25, and an adaptation groove is provided at the upper end of the ball groove through the assembly box 25. A mounting ball head rod 26 is provided at the lower end of the second control cylinder 11, and the mounting ball head rod 26 is rotatably inserted into the ball groove of the assembly box 25, and the ball groove is symmetrical at the upper end. A plurality of self-rotating balls 27 are provided, and one side of the plurality of self-rotating balls 27 are respectively in contact with the mounting ball head rod 26. A mounting hole 28 is provided on one side of the ball groove and passes through the assembly box 25. The diameter of the mounting hole 28 is larger than the diameter of the mounting ball head rod 26, and a narrow slot is provided in the mounting hole 28 connected to the adapting slot. When the mounting ball head rod 26 is in contact with the self-rotating balls 27, the mounting hole 28 is misaligned with the mounting ball head rod 26. When the second control cylinder 11 and the clamping jaw bracket 12 need to be installed, the mounting ball head rod 26 can be inserted into the ball groove through the position of the mounting hole 28, and then the second control cylinder 11 is rotated so that the rod of the mounting ball head rod 26 passes over the narrow slot and maintains a vertical posture. The upper end of the mounting ball head rod 26 is in contact with the self-rotating balls 27, and then the clamping jaw bracket 12 maintains a posture of preventing separation from the second control cylinder 11 under the action of gravity, and the clamping jaw bracket 12 can rotate freely.

[0043] When the ball head rod 26 is installed in the ball groove, the anti-slip baffle 31 is inserted into the ball groove horizontally and abuts against the lower end of the ball head rod 26, and the anti-slip baffle 31 is placed in the plate groove and is symmetrically provided with two supporting springs 32. The upper and lower sides of the plate groove are respectively penetrated with strip grooves, and the anti-slip baffle 31 is vertically provided with an anti-slip pull plate 33 on one side of the plate groove, and two strip grooves are respectively penetrated and inserted on both sides of the anti-slip pull plate 33. When the ball head rod 26 is misaligned with the mounting hole 28, one side of the anti-slip baffle 31 extends out of the plate groove and abuts against the bottom of the ball head rod 26, further preventing the second control cylinder 11 from separating from the clamping claw bracket 12, and when the ball head rod 26 is installed and connected to the assembly box 25, the anti-slip baffle 31 can be pushed to retract and squeeze the supporting spring 32, and the installation operation is simple.

[0044] In addition, a stabilizing guide rod 34 is vertically provided on one side of the telescopic rod of the second control cylinder 11, and a guide sleeve 35 is provided on one side of the cylinder body of the second control cylinder 11, and the stabilizing guide rod 34 vertically moves through the guide sleeve 35. When the clamping claw bracket 12 is used to facilitate the adjustment of the angle position of the clamped cover plate, no excessive wear is generated between the telescopic rod and the cylinder body, thereby improving the service stability and life of the second control cylinder 11.

[0045] Although 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 of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A semi-automatic lifting and paving equipment for a cover plate, comprising a paving vehicle, characterized in that: The paving vehicle is located on a railway platform (1), two ballasts (2) are symmetrically arranged above the railway platform (1), a cable trough (3) is arranged on one side of the two ballasts (2) of the railway platform (1), the paving vehicle is straddled on the ballast (2), the paving vehicle comprises a frame (4), a travel assembly is arranged at the lower end of the frame (4), and the travel assembly comprises four mobile control boxes (19); A rotating support assembly, the rotating support assembly being arranged at the center of the upper end of the frame (4), the rotating support assembly comprising a main column (7), a first rotating bracket (8), a second rotating bracket (801) and a height control arm (10), the main column (7) being vertically arranged at the upper end of the frame (4), and the first rotating bracket (8) being movably arranged at one side of the main column (7); A gripping assembly, the gripping assembly comprising a clamping jaw support (12) and two clamping control cylinders (13), a second control cylinder (11) being vertically arranged at the upper end of the clamping jaw support (12), and an upper end of the second control cylinder (11) being connected to a height control arm (10); A multifunctional mounting assembly is provided at a position where a clamping jaw support (12) is connected to a second control cylinder (11), and the multifunctional mounting assembly comprises a mounting crossbeam (24), an assembly box (25), a mounting ball head rod (26) and an anti-slip baffle (31).

2. The semi-automatic lifting and paving equipment for cover plates according to claim 1 is characterized in that: The four mobile control boxes (19) are symmetrically arranged on both sides of the lower end of the frame (4), and the lower ends of the four mobile control boxes (19) are all provided with running wheels (5), and the lower ends of the four running wheels (5) are respectively in contact with the upper end of the railway platform (1).

3. The semi-automatic lifting and paving equipment for cover plates according to claim 2 is characterized in that: One side of the first rotating bracket (8) is horizontally rotatably sleeved on the upper end of the main column (7) through a bearing, a swing pin is provided on the side of the first rotating bracket (8) away from the main column (7), the second rotating bracket (801) is movably connected with the first rotating bracket (8) through the swing pin, and two auxiliary support wheels (20) are provided on the side of the outer peripheral surface of the first rotating bracket (8) close to the main column (7) and the side of the walking wheel (5) close to the roadbed (2) through a wheel frame.

4. The semi-automatic lifting and paving equipment for cover plates according to claim 3 is characterized in that: The second rotating bracket (801) is provided with a height control arm (10) and a first control cylinder (9) at the upper and lower ends of a side away from the first rotating bracket (8) respectively, which are movably connected via a pin shaft, and the side of the first control cylinder (9) away from the second rotating bracket (801) is movably connected to the lower end of the height control arm (10) via a pin shaft.

5. The semi-automatic lifting and paving equipment for cover plates according to claim 4 is characterized in that: The second control cylinder (11) is movably connected to a side of the height control arm (10) away from the second rotating bracket (801) via a pin shaft, and the clamping jaw bracket (12) is horizontally arranged below the second control cylinder (11). A manual handrail is arranged on one side of the clamping jaw bracket (12), and an operating panel (18) is arranged on one side of the manual handrail.

6. The semi-automatic lifting and paving equipment for cover plates according to claim 5 is characterized in that: The two clamping control cylinders (13) are respectively arranged horizontally on both sides of the upper end of the clamping jaw bracket (12); a movable clamping plate (14) is vertically arranged on one side of the two clamping control cylinders (13) through bolts; two guide beams (15) are horizontally and symmetrically arranged on both sides of the movable clamping plate (14) close to the clamping jaw bracket (12); a guide groove is provided on one side of the guide beam (15) of the clamping jaw bracket (12), and the two guide beams (15) are respectively movably plugged into the guide groove.

7. The semi-automatic lifting and paving equipment for cover plates according to claim 6 is characterized by: A reference clamping plate (16) is vertically provided on one side of the lower end of the clamping jaw bracket (12) away from the movable clamping plate (14), and rubber gaskets (17) are provided on the opposite sides of the reference clamping plate (16) and the movable clamping plate (14) through bolts.

8. The semi-automatic lifting and paving equipment for cover plates according to claim 7 is characterized in that: The mounting crossbeam (24) is horizontally arranged at the center of the clamping claw bracket (12), and the assembly box (25) is vertically arranged at the center of the upper end of the mounting crossbeam (24). A ball groove is provided in the assembly box (25), and an adaptation groove is provided at the upper end of the ball groove penetrating through the assembly box (25). A mounting ball head rod (26) is provided at the lower end of the second control cylinder (11). The mounting ball head rod (26) is rotatably plugged into the ball groove of the assembly box (25), and a plurality of self-rotating balls (27) are symmetrically arranged at the upper end of the ball groove, and one side of the plurality of self-rotating balls (27) is respectively in contact with the mounting ball head rod (26).

9. The semi-automatic lifting and paving equipment for cover plates according to claim 8 is characterized in that: A mounting hole (28) is provided on one side of the ball groove and passes through the assembly box (25). The diameter of the mounting hole (28) is larger than the diameter of the mounting ball head rod (26). A narrow slot is provided in communication with the mounting hole (28) and in communication with the adaption groove. When the mounting ball head rod (26) contacts the self-rotating ball (27), the mounting hole (28) and the mounting ball head rod (26) are misaligned.

10. The semi-automatic lifting and paving equipment for cover plates according to claim 9 is characterized in that: A plate groove is provided in the installation crossbeam (24) on one side of the assembly box (25) and is horizontally connected to the ball groove. An anti-slip baffle (31) is horizontally and movably inserted in the plate groove. When the installation ball head rod (26) is placed in the ball groove, the anti-slip baffle (31) is horizontally inserted in the ball groove and abuts against the lower end of the installation ball head rod (26). Two support springs (32) are horizontally and symmetrically provided on one side of the anti-slip baffle (31) placed in the plate groove. Strip grooves are respectively penetrated on the upper and lower sides of the plate groove. An anti-slip pull plate (33) is vertically provided on one side of the anti-slip baffle (31) located in the plate groove, and two strip grooves are respectively penetrated and inserted on both sides of the anti-slip pull plate (33).

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