Aircraft seat transportation tool

Abstract

The utility model relates to the technical field of aircraft maintenance equipment, in particular to an aircraft seat transportation tool which comprises a moving frame, a conveying assembly obliquely arranged on the moving frame and a rotating assembly arranged on the top of the moving frame. The conveying assembly comprises a chain plate conveying belt capable of conveying the aircraft seat from the bottom of the moving frame to the top of the moving frame, and a transverse baffle is arranged on the chain plate conveying belt. The rotating assembly comprises a rotating plate in butt joint with the upper end of the chain plate conveying belt, a tooth groove plate arranged at the lower end of the rotating plate, a rotating gear meshed with the tooth groove plate and a rotating motor used for driving the rotating gear. The aircraft seat conveying device has the effects that aircraft seats on the ground can be conveniently conveyed into an aircraft from a cabin door, and labor consumption is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of aircraft maintenance equipment, and in particular to an aircraft seat transportation tool. Background Art

[0002] An airplane is a high-precision aircraft. After being used for a certain period of time or number of times, it needs to be regularly inspected. The purpose is to thoroughly check the technical condition of the equipment, discover performance changes of parts and early wear and damage inside the parts, and completely eliminate the faults found and restore the performance of technical equipment. During the inspection process, replacing aircraft seats is a common inspection item.

[0003] The Chinese patent with the authorization announcement number CN211844948U discloses an aircraft seat transport tool, including a main frame, a seat platform and a power device. One end of the main frame is inclined, and a plurality of pedals distributed in a stepped manner are provided at the inclined end of the main frame. A guide rail is provided on both sides of the inclined end of the main frame; the seat platform includes a seat plate, a back plate and a connecting bracket. One end of the connecting bracket is connected to the seat plate, and the other end is connected to a slider. The lower end of the slider is provided with a slide groove, and the guide rail is placed in the slide groove of the slider. One end of the seat plate is connected to the back plate; the connecting bracket is connected to the power device, and the power device includes a motor, a gear and a rack. The rack is fixedly installed at the inclined end of the main frame and is parallel to the guide rail. The connecting bracket is connected to the motor, and the output shaft of the motor is connected to the gear, and the gear is meshed with the rack. It is mainly used to transport seats for small and medium-sized aircraft to reduce the labor intensity of manual handling.

[0004] During the application process, it was found that most aircraft seats are arranged in rows of multiple seats, and their length is much greater than the width of the aircraft cabin door. When the aircraft seats are transported horizontally to the cabin door position, they need to be manually rotated to facilitate the transportation of the aircraft seats from the cabin door to the aircraft. Utility Model Content

[0005] In order to facilitate the transportation of aircraft seats on the ground from a cabin door into an aircraft and reduce labor consumption, the present application provides an aircraft seat transportation tool.

[0006] The present application provides an aircraft seat transportation tool that adopts the following technical solution:

[0007] An aircraft seat transport tool comprises a moving frame, a conveying assembly obliquely arranged on the moving frame, and a rotating assembly arranged on the top of the moving frame;

[0008] The conveying assembly comprises a chain conveyor belt capable of conveying the aircraft seats from the bottom to the top of the mobile frame, wherein the chain conveyor belt is provided with a transverse baffle;

[0009] The rotating assembly includes a rotating plate docked with the upper end of the chain conveyor belt, a toothed plate arranged at the lower end of the rotating plate, a rotating gear meshed with the toothed plate, and a rotating motor for driving the rotating gear.

[0010] By adopting the above technical scheme, the conveying component is tiltedly arranged on the mobile frame, the rotating component is arranged at the top of the mobile frame, the transverse baffle on the chain conveyor belt can prevent the aircraft seat from sliding, and the chain conveyor belt is operated. After the aircraft seat is placed on the lower end of the chain conveyor belt, the chain conveyor belt transports the aircraft seat from the ground to the top of the mobile frame, the rotating plate is docked with the upper end of the chain conveyor belt, and the transverse baffle is cooperated to transport the aircraft seat to the rotating plate, and the rotating motor is operated to drive the rotating gear. Through the cooperation of the rotating gear and the toothed plate, the rotating plate can be rotated, and the aircraft seat is vertically aligned with the aircraft cabin door, so that the aircraft seat can pass through the cabin door conveniently, which is convenient for transporting the aircraft seat on the ground from the cabin door into the aircraft, thereby reducing labor consumption.

[0011] Optionally, a plurality of balls are movably arranged on the top plate surface of the rotating plate, and the plurality of balls are in a rectangular array.

[0012] By adopting the above technical solution, multiple ball arrays are distributed on the top plate surface of the rotating plate, which can facilitate the chain conveyor belt to transport the aircraft seat to the rotating plate. When the aircraft seat is carried from the rotating plate into the aircraft cabin door, the friction between the aircraft seat and the rotating plate can be reduced, thereby reducing the probability of damage to the aircraft seat or the rotating plate.

[0013] Optionally, a mounting plate for mounting the rotating assembly is provided on the top of the mobile frame, and a lifting slot for mounting the rotating plate is provided on the mounting plate;

[0014] The rotating assembly further comprises an electric lifting cylinder arranged below the toothed plate and a load-bearing bearing arranged between a telescopic rod of the electric lifting cylinder and the toothed plate, and the toothed plate is kept in mesh with the rotating gear.

[0015] By adopting the above technical solution, a lifting groove is opened on the mounting plate, and the rotating plate is arranged in the lifting groove, so that the rotating plate and the top plate surface of the mounting plate can be on the same plane, which is convenient for the chain plate conveyor belt to transport the aircraft seat to the rotating plate, and the electric lifting cylinder is operated, and the telescopic rod is extended to move the rotating plate to the top of the lifting groove. The load-bearing bearing enables the electric lifting cylinder and the toothed plate to rotate relative to each other, and the toothed plate and the rotating gear are kept in meshing. After the rotating motor is operated, the rotating plate can be driven to rotate through the toothed plate and the rotating gear.

[0016] Optionally, a transmission groove for setting the toothed plate and the rotating gear is opened at the bottom of the lifting groove, the rotating motor and the electric lifting cylinder are vertically arranged on the bottom surface of the mounting plate, and the output shaft of the rotating motor and the telescopic rod of the electric lifting cylinder pass through the bottom of the transmission groove.

[0017] By adopting the above technical solution, the tooth plate and the rotating gear are arranged in the transmission groove, which can protect the tooth plate and the rotating gear and prevent foreign debris from being involved between the tooth plate and the rotating gear.

[0018] Optionally, a mounting notch is provided at one end of the mounting plate close to the chain conveyor belt to make way for the chain conveyor belt, and guardrails are provided on both sides of the mounting plate close to the mounting notch.

[0019] By adopting the above technical solution, the upper end of the chain conveyor belt is arranged in the installation notch of the mounting plate, so that the upper end of the chain conveyor belt is closer to the rotating plate, which is convenient for conveying the aircraft seat to the rotating plate, and the operator on the mounting plate can be protected by the guardrail.

[0020] Optionally, the conveying assembly further includes a mounting frame disposed on the movable frame and a conveying motor disposed on the mounting frame, wherein the mounting frame supports the chain conveyor belt, and the conveying motor is used to drive the chain conveyor belt.

[0021] By adopting the above technical solution, the installation frame is fixedly connected to the mobile frame, the chain plate conveyor belt is arranged on the installation frame, and the running conveying motor can provide power for the chain plate conveyor belt to transport the aircraft seat from the bottom of the mobile frame to the top.

[0022] Optionally, a plurality of moving wheels are arranged at the bottom of the moving frame, and a plurality of hydraulic support feet are arranged on the moving frame, wherein the hydraulic support feet include a hydraulic cylinder and a round foot plate fixedly connected to one end of the hydraulic cylinder.

[0023] By adopting the above technical solution, the moving wheels are arranged at the bottom of the moving frame, so that the operator can move it conveniently and operate the hydraulic cylinder to make the round foot plate contact with the ground, so that the moving frame can be stably set on the ground.

[0024] Optionally, a guide plate is hinged at the bottom of the movable frame, the guide plate is connected to the lower end of the chain conveyor belt, a plurality of rollers are rotatably arranged on the guide plate, and an electric hydraulic rod is arranged between the guide plate and the movable frame.

[0025] By adopting the above technical solution, the guide plate is connected to the lower end of the chain conveyor belt, and the electric hydraulic rod is operated to make the guide plate away from one end of the chain conveyor belt and abut against the ground. Multiple rollers are rotatably arranged on the guide plate, which is convenient for operators to move the aircraft seats onto the chain conveyor belt.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. By setting a mobile frame, a conveying assembly, a chain plate conveyor belt, a transverse baffle, a rotating assembly, a rotating plate, a toothed plate, a rotating gear and a rotating motor, the conveying assembly is tiltedly arranged on the mobile frame, the rotating assembly is arranged at the top of the mobile frame, the transverse baffle on the chain plate conveyor belt can prevent the aircraft seat from sliding, the chain plate conveyor belt is operated, and after the aircraft seat is placed on the lower end of the chain plate conveyor belt, the chain plate conveyor belt transports the aircraft seat from the ground to the top of the mobile frame, the rotating plate is docked with the upper end of the chain plate conveyor belt, and the transverse baffle is cooperated to transport the aircraft seat to the rotating plate, the rotating motor is operated to drive the rotating gear, and the rotating plate can be rotated through the cooperation of the rotating gear and the toothed plate, so that the aircraft seat is vertically aligned with the aircraft cabin door, so that the aircraft seat can pass through the cabin door conveniently, and it is convenient to transport the aircraft seat on the ground from the cabin door into the aircraft, thereby reducing labor consumption;

[0028] 2. By setting the mounting plate, lifting slot, electric lifting cylinder and load-bearing bearing, the mounting plate is provided with a lifting slot, and the rotating plate is arranged in the lifting slot, so that the rotating plate and the top plate surface of the mounting plate can be on the same plane, which is convenient for the chain plate conveyor belt to transport the aircraft seat to the rotating plate, and the electric lifting cylinder is operated, and the telescopic rod is extended to move the rotating plate to the top of the lifting slot. The load-bearing bearing enables the electric lifting cylinder and the toothed plate to rotate relative to each other, and the toothed plate is kept in mesh with the rotating gear. After the rotating motor is operated, the rotating plate can be driven to rotate through the toothed plate and the rotating gear;

[0029] 3. By setting a guide plate, rollers and an electric hydraulic rod, the guide plate is butted against the lower end of the chain conveyor belt, and the electric hydraulic rod is operated to make one end of the guide plate away from the chain conveyor belt contact the ground, and multiple rollers are rotatably arranged on the guide plate, so that the operator can move the aircraft seat onto the chain conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of an aircraft seat transportation tool in an embodiment of the present application.

[0031] Figure 2 It is a structural schematic diagram of the aircraft seat transportation tool from another perspective in the embodiment of the present application.

[0032] Figure 3 It is a schematic diagram of the exploded structure of the rotating assembly in the embodiment of the present application.

[0033] Explanation of the accompanying drawings: 1. Moving frame; 11. Mounting plate; 111. Lifting slot; 112. Transmission slot; 113. Mounting notch; 12. Guardrail; 13. Moving wheel; 2. Conveying assembly; 21. Chain conveyor belt; 211. Horizontal baffle; 22. Mounting frame; 23. Conveying motor; 3. Rotating assembly; 31. Rotating plate; 311. Ball; 32. Toothed plate; 33. Rotating gear; 34. Rotating motor; 35. Electric lifting cylinder; 36. Load-bearing bearing; 4. Hydraulic support foot; 41. Hydraulic cylinder; 42. Round foot plate; 5. Guide plate; 51. Roller; 52. Electric hydraulic rod. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-3 This application is described in further detail.

[0035] The present application embodiment discloses an aircraft seat transportation tool. Figure 1 and Figure 2 An aircraft seat transport vehicle includes a moving frame 1, a conveying assembly 2 obliquely arranged on the moving frame 1, and a rotating assembly 3 arranged on the top of the moving frame 1.

[0036] The height of the mobile frame 1 is set according to the height of the aircraft cabin door. The aircraft seat can be conveniently transported horizontally to the top of the mobile frame 1 through the conveying component 2. The rotating component 3 is docked with the conveying component 2, so that the aircraft seat is transported horizontally to the rotating component 3. The rotating component 3 drives the aircraft seat to rotate, which makes it convenient to align the aircraft seat vertically with the aircraft cabin door and conveniently carry the aircraft seat from the cabin door into the aircraft.

[0037] The mobile frame 1 is formed by integrally processing a plurality of rectangular rods. The mobile frame 1 is in the shape of a right-angled trapezoid. The top area of ​​the mobile frame 1 is smaller than the bottom area of ​​the mobile frame 1. A plurality of mobile wheels 13 are arranged at the bottom of the mobile frame 1. In the present embodiment, four mobile wheels 13 are arranged, and the four mobile wheels 13 are respectively arranged at the four corners of the bottom of the mobile frame 1.

[0038] A plurality of hydraulic feet 4 are provided at the bottom of the mobile frame 1. The hydraulic feet 4 are provided at a position close to the mobile wheels 13. In the present embodiment, four hydraulic feet 4 are provided. The hydraulic feet 4 include a hydraulic cylinder 41 and a circular foot plate 42 fixedly connected to one end of the hydraulic cylinder 41. When the hydraulic cylinder 41 is operated, the circular foot plate 42 can be brought into contact with the ground, so that the mobile frame 1 can be stably placed on the ground.

[0039] Reference Figure 1 and Figure 2A mounting plate 11 for mounting the rotating assembly 3 is fixedly connected to the top of the mobile frame 1, and the mounting plate 11 is in the shape of a rectangular plate. The conveying assembly 2 is arranged along the inclined surface of the mobile frame 1, the upper end of the conveying assembly 2 is close to the mounting plate 11, and is connected to the rotating assembly 3, and the lower end of the conveying assembly 2 is close to the bottom of the mobile frame 1.

[0040] The conveying assembly 2 includes a mounting frame 22 fixedly connected to the mobile frame 1, a chain conveyor belt 21 rotatably arranged on the mounting frame 22, and a conveying motor 23 fixedly connected to the mounting frame 22. The mounting frame 22 includes two horizontal sections and one inclined section. The horizontal section at the top of the mounting frame 22 is connected to the mounting plate 11. The mounting plate 11 is provided with an installation notch 113 to make way for the mounting frame 22 and the chain conveyor belt 21.

[0041] The horizontal section at the bottom end of the mounting frame 22 is butt-jointed with the bottom end of the mobile frame 1. A guide plate 5 is hingedly connected to the bottom of the mobile frame 1. The guide plate 5 is arranged at a position close to the horizontal section at the bottom end of the mounting frame 22 so that the guide plate 5 can butt-join the lower end of the chain conveyor belt 21. A plurality of rollers 51 are rotatably arranged on the top plate surface of the guide plate 5, and a plurality of electric hydraulic rods 52 are arranged between the guide plate 5 and the mobile frame 1.

[0042] In this embodiment, two electric hydraulic rods 52 are provided, one end of the electric hydraulic rod 52 is hinged to the middle of the side of the guide plate 5, and the other end of the electric hydraulic rod 52 away from the guide plate 5 is hinged to the mobile frame 1. When the electric hydraulic rod 52 is operated to extend, the end of the guide plate 5 away from the mobile frame 1 can be away from the ground, and the guide plate 5 can be retracted for easy movement. When the electric hydraulic rod 52 is operated to retract, the end of the guide plate 5 away from the mobile frame 1 can be in contact with the ground, so that the aircraft seat can be guided, and it is convenient for the operator to carry the aircraft seat to the chain plate conveyor belt 21.

[0043] A transmission shaft and a gear are arranged in the mounting frame 22, so that after the chain conveyor belt 21 is arranged on the mounting frame 22, the chain conveyor belt 21 can be driven to transmit. The chain conveyor belt 21 is a prior art and will not be repeated here. A transverse baffle 211 is vertically fixed on the belt surface of the chain conveyor belt 21. The transverse baffle 211 is provided with a plurality of pieces. The chain conveyor belt 21 can transport heavy objects. The transverse baffle 211 can prevent the aircraft seat from sliding off and facilitate the transportation of the aircraft seat to the rotating assembly 3.

[0044] Reference Figure 2 and Figure 3 The conveying motor 23 is fixedly connected to the side wall of the mounting frame 22. The conveying motor 23 is connected to the drive shaft through a reducer. Running the conveying motor 23 can drive the chain conveyor belt 21 to transmit on the mounting frame 22. The mounting frame 22 supports the chain conveyor belt 21, and the conveying motor 23 provides power for the chain conveyor belt 21.

[0045] The rotating assembly 3 includes a rotating plate 31 connected to the upper end of the chain conveyor belt 21, a toothed plate 32 arranged at the lower end of the rotating plate 31, a rotating gear 33 meshing with the toothed plate 32, a rotating motor 34 for driving the rotating gear 33, an electric lifting cylinder 35 arranged directly below the toothed plate 32, and a load-bearing bearing 36 arranged between the electric lifting cylinder 35 and the toothed plate 32.

[0046] A lifting groove 111 is provided on the top plate surface of the mounting plate 11, and the lifting groove 111 is provided at a position close to the mounting notch 113. The rotating plate 31 is adapted to the lifting groove 111, and the rotating plate 31 is arranged in the lifting groove 111, so that the top plate surface of the rotating plate 31 can be parallel to the top plate surface of the mounting plate 11. A plurality of balls 311 are movably arranged on the top plate surface of the rotating plate 31, and the plurality of balls 311 are arranged in a rectangular array, so that the chain conveyor belt 21 can convey the aircraft seat to the rotating plate 31. The shape of the rotating plate 31 can be a variety of shapes such as a rectangle, a circle, a square, etc. In this embodiment, the rotating plate 31 is a rectangular plate.

[0047] When the aircraft seat contacts the top surface of the rotating plate 31, the multiple balls 311 can change the static friction between the aircraft seat and the rotating plate 31 into sliding friction and static friction, thereby reducing the friction resistance when the aircraft seat and the rotating plate 31 move relative to each other, making it easier for the chain conveyor belt 21 to transport the aircraft seat to the rotating plate 31 while facilitating the operator to remove the aircraft seat from the rotating plate 31. In addition, there is a certain friction resistance when the aircraft seat and the rotating plate 31 move relative to each other, and this friction resistance can drive the aircraft seat to rotate when the rotating plate 31 rotates.

[0048] Reference Figure 2 and Figure 3 A transmission groove 112 is provided at the bottom of the lifting groove 111, and a toothed plate 32 and a rotating gear 33 are arranged in the transmission groove 112. The toothed plate 32 is a circular plate, and a gear groove adapted to the rotating gear 33 is provided on the circumferential surface of the toothed plate 32. The rotating motor 34 and the electric lifting cylinder 35 are vertically arranged on the bottom plate surface of the mounting plate 11, and a through hole is provided at the bottom of the transmission groove 112, so that the output shaft of the rotating motor 34 and the telescopic rod of the electric lifting cylinder 35 pass through the bottom of the transmission groove 112. The output shaft of the rotating motor 34 is fixedly connected to the rotating gear 33, and the telescopic rod of the electric lifting cylinder 35 is rotatably connected to the toothed plate 32 through a load-bearing bearing 36.

[0049] The electric lifting cylinder 35 is operated to extend the telescopic rod, which drives the load-bearing bearing 36, the toothed plate 32 and the rotating plate 31 to move, so that the rotating plate 31 is higher than the notch of the lifting groove 111 and is located above the lifting groove 111. The aircraft seat on the rotating plate 31 is higher than the bottom of the aircraft cabin door, which is convenient for operators to carry the aircraft seat through the cabin door.

[0050] When the electric lifting cylinder 35 drives the toothed plate 32 to move, the toothed plate 32 and the rotating gear 33 always keep in meshing, and the rotating motor 34 is operated to rotate the output shaft, thereby driving the rotating gear 33 and the rotating plate 31 to rotate, and the aircraft seat is driven to rotate through the rotating plate 31, so that the aircraft seat is vertically aligned with the aircraft cabin door, which is convenient for the operator to carry the aircraft seat through the cabin door.

[0051] The implementation principle of an aircraft seat transportation tool in the embodiment of the present application is as follows: the electric hydraulic rod 52 is operated to drive the guide plate 5 to rotate, so that the guide plate 5 abuts against the ground, and the roller 51 is cooperated to facilitate the transportation of the aircraft seat to the lower end of the chain plate conveyor belt 21, and the conveying motor 23 is operated to drive the chain plate conveyor belt 21 to transmit, so as to transport the aircraft seat to the mounting plate 11, and transport the aircraft seat from the bottom to the top of the mobile frame 1. The transverse baffle 211 can prevent the aircraft seat from sliding, and the ball 311 can be cooperated to conveniently transport the aircraft seat to the rotating plate 31, and the electric lifting cylinder 35 is operated to make the rotating plate 31 located above the lifting groove 111, and the rotating motor 34 is operated to drive the tooth plate 32 and the rotating plate 31 to rotate through the rotating gear 33, so that the aircraft seat rotates, can be vertically aligned with the aircraft cabin door, and the aircraft seat is higher than the bottom of the aircraft cabin door, so that the operator can carry the aircraft seat through the cabin door, and it is convenient to transport the aircraft seat on the ground from the cabin door into the aircraft, thereby reducing labor consumption.

[0052] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An aircraft seat transport vehicle, characterized in that: It comprises a moving frame (1), a conveying assembly (2) arranged obliquely on the moving frame (1), and a rotating assembly (3) arranged on the top of the moving frame (1); The conveying assembly (2) comprises a chain conveyor belt (21) capable of conveying the aircraft seats from the bottom to the top of the mobile frame (1), and a transverse baffle (211) is provided on the chain conveyor belt (21); The rotating assembly (3) comprises a rotating plate (31) connected to the upper end of the chain conveyor belt (21), a toothed plate (32) arranged at the lower end of the rotating plate (31), a rotating gear (33) meshing with the toothed plate (32), and a rotating motor (34) for driving the rotating gear (33).

2. The aircraft seat transport vehicle according to claim 1, characterized in that: A plurality of rolling balls (311) are movably arranged on the top plate surface of the rotating plate (31), and the plurality of rolling balls (311) are arranged in a rectangular array.

3. The aircraft seat transport tool according to claim 2, characterized in that: A mounting plate (11) for mounting the rotating assembly (3) is arranged on the top of the moving frame (1), and a lifting groove (111) for mounting the rotating plate (31) is provided on the mounting plate (11); The rotating assembly (3) further comprises an electric lifting cylinder (35) arranged below the toothed plate (32) and a load-bearing bearing (36) arranged between the telescopic rod of the electric lifting cylinder (35) and the toothed plate (32), and the toothed plate (32) is kept in meshing engagement with the rotating gear (33).

4. The aircraft seat transport tool according to claim 3, characterized in that: A transmission groove (112) for arranging the toothed plate (32) and the rotating gear (33) is provided at the bottom of the lifting groove (111); the rotating motor (34) and the electric lifting cylinder (35) are vertically arranged on the bottom surface of the mounting plate (11); and the output shaft of the rotating motor (34) and the telescopic rod of the electric lifting cylinder (35) pass through the bottom of the transmission groove (112).

5. The aircraft seat transport tool according to claim 4, characterized in that: An installation notch (113) is provided at one end of the installation plate (11) close to the chain conveyor belt (21) to make way for the chain conveyor belt (21), and guardrails (12) are provided on both sides of the installation plate (11) close to the installation notch (113).

6. The aircraft seat transport vehicle according to claim 5, characterized in that: The conveying assembly (2) further comprises a mounting frame (22) arranged on the moving frame (1) and a conveying motor (23) arranged on the mounting frame (22), wherein the mounting frame (22) supports the chain conveyor belt (21), and the conveying motor (23) is used to drive the chain conveyor belt (21).

7. The aircraft seat transportation tool according to claim 6, characterized in that: A plurality of moving wheels (13) are arranged at the bottom of the moving frame (1), and a plurality of hydraulic support feet (4) are arranged on the moving frame (1). The hydraulic support feet (4) include a hydraulic cylinder (41) and a round foot plate (42) fixedly connected to one end of the hydraulic cylinder (41).

8. The aircraft seat transportation tool according to claim 7, characterized in that: A guide plate (5) is hinged at the bottom of the mobile frame (1), the guide plate (5) is connected to the lower end of the chain conveyor belt (21), a plurality of rollers (51) are rotatably arranged on the guide plate (5), and an electric hydraulic rod (52) is arranged between the guide plate (5) and the mobile frame (1).

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