Composite sliding rail mechanism and application thereof to vehicle sliding-out system

Abstract

The invention relates to a composite sliding rail mechanism and a vehicle sliding-out system thereof, the composite sliding rail mechanism comprises a first sliding combined guide rail, a second sliding combined guide rail and a guider, and the first sliding combined guide rail and the second sliding combined guide rail are installed on the guider in parallel. A vehicle sliding-out system comprises a composite sliding rail mechanism, a driving device, a rack frame, a supporting frame, a bearing box and a sliding-out box body, the composite sliding rail mechanism comprises a first sliding combined guide rail, a second sliding combined guide rail and a guider, the first sliding combined guide rail is fixed to the supporting frame, and the second sliding combined guide rail is fixed to the supporting frame; the second sliding combination guide rail is fixed to the bearing box, the driving device is fixed to the supporting frame, the supporting frame is fixed to the vehicle body, the bearing box is fixed to the two sides of the sliding-out box body, a long-strip-shaped opening is formed in the bottom of the bearing box, and the sliding-out box body is arranged at the opening of the vehicle body. Two-stage stretching can be achieved, the use space of the vehicle is increased, the cantilever type moving assembly, the driving device and the supporting frame are integrally arranged in the bearing box, neatness and attractiveness are achieved, and rapid mounting and dismounting are convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slide rail extension, in particular to a composite slide rail mechanism and its use in a vehicle slide-out system. BACKGROUND

[0002] Existing vehicles and recreational vehicles use slide-out boxes to increase the use space inside the recreational vehicle. The outer wall of the slide-out box is flush with the outside of the vehicle or trailer during driving, and when the vehicle stops, the slide-out room is slid out from the opening of the vehicle, thereby increasing the internal use space of the vehicle.

[0003] US20010030437A1 discloses a vehicle slide-out box device, in which the slide-out support mechanism and the slide-out driver mechanism are separately arranged, reducing the use space of the slide-out box and the space utilization.

[0004] US201615339481A discloses a device in which the slide-out mechanism is located below the vehicle body, occupying a large space and being inconvenient to install.

[0005] In addition, the extension of the existing vehicle slide-out box is mostly achieved by using multiple sets of linear guide rails and sliding blocks, and the linear guide rails and sliding blocks limit the rolling body with plastic or other materials, and are installed using an integrated retainer. The volume is too large, the design is complex, the installation is inconvenient, the use space of the recreational vehicle is occupied, the slide-out part of the vehicle cannot be well sealed, and the rolling balls are affected by the sundries, increasing the friction, requiring professional maintenance, and increasing the related use cost.

[0006] According to the related technology in the above, the inventors believe that the extension mechanism of the vehicle slide-out box is relatively large, the installation is complex, and the cost is high. Therefore, it is considered that the extension mechanism of the vehicle slide-out box has the problem of low space utilization. SUMMARY

[0007] In order to improve the problem of low space utilization of the extension mechanism of the vehicle slide-out box, the present application provides a composite slide rail mechanism and its use in a vehicle slide-out system. The composite slide rail mechanism is integrally arranged below both sides of the box body, and suspends the weight of the slide-out box, which is used in the vehicle slide-out system, can save space, improve space utilization and is convenient to install and maintain.

[0008] The present application provides a composite slide rail mechanism and its use in a vehicle slide-out system, which adopts the following technical scheme:

[0009] A composite slide rail mechanism, comprising a guide, a first sliding combination guide rail, and a second sliding combination guide rail, the first sliding combination guide rail and the second sliding combination guide rail are installed in parallel on the guide.

[0010] By adopting the technical scheme, the composite slide rail mechanism can be linearly extended and retracted in parallel, and the use space is expanded.

[0011] Preferably, the two sides of the guide are respectively provided with a first guide groove and a second guide groove, the upper and lower surfaces of the first guide groove are respectively provided with a first guide slide, the upper and lower surfaces of the second guide groove are respectively provided with a second guide slide, the first sliding combination guide rail is correspondingly arranged with the first guide slide, and the second sliding combination guide rail is correspondingly arranged with the second guide slide.

[0012] By adopting the technical scheme, the first sliding combination guide rail and the second sliding combination guide rail are arranged in the guide slides of the corresponding guide grooves, the friction of the sliding combination guide rail is reduced, and the composite slide rail mechanism is conveniently extended and retracted.

[0013] Preferably, the two sides of the first guide groove are respectively provided with a first control block and a second control block.

[0014] By adopting the technical scheme, the two control blocks can control the extension length of the composite slide rail mechanism.

[0015] Preferably, the first sliding combination guide rail and the second sliding combination guide rail are each composed of three metal plates with different thicknesses, the two metal plates of the first sliding combination guide rail are each provided with a corresponding first circulating raceway, a plurality of balls are arranged in the first circulating raceway, the balls are uniformly slid in the first circulating raceway, part of the surface of the balls is exposed, the balls are slid on the corresponding first guide slide, the combination of the three metal plates, the first circulating raceway and the balls constitutes the first sliding combination guide rail, and the second sliding combination guide rail has the same principle as the first sliding combination guide rail.

[0016] By adopting the technical scheme, the first sliding combination guide rail composed of the metal plates with different thicknesses can be connected with the support frame, and a sliding gap is left for the guide, and the second sliding combination guide rail composed of the metal plates with different thicknesses can be connected with the bearing box and the guide, and a sliding gap is left for the guide. The balls are uniformly slid in the first circulating raceway, part of the surface of the balls is exposed, and the balls are slid in the corresponding guide groove of the guide, so that the sliding resistance is reduced.

[0017] Preferably, the first circulating raceway is a half shape corresponding to the three metal plates, the two metal plates of the three metal plates are parallel to each other and constitute a complete first circulating raceway, the diameter of the ball is smaller than that of the first circulating raceway, the first circulating raceway clamps the ball, and the ball can be circularly rolled in the first circulating raceway.

[0018] By adopting the above technical scheme, the sliding of the ball in the first circulating raceway can reduce the friction force, facilitate the telescopic sliding of the composite slide rail mechanism, and enable the first sliding combined guide rail and the second sliding combined guide rail to obtain uniform bearing capacity at any position, thereby avoiding local overload or suspension phenomenon and improving the bearing capacity and stability of the system.

[0019] Preferably, a vehicle sliding-out system comprises a composite slide rail mechanism, a driving device, a support frame, a bearing box and a sliding-out box body, the composite slide rail mechanism comprises a first sliding combined guide rail, a second sliding combined guide rail and a guide, the first sliding combined guide rail is fixed on the support frame, the second sliding combined guide rail is fixed on the bearing box, the driving device is fixed on the support frame, the support frame is fixed on a vehicle body, the bearing box is fixed on both sides of the sliding-out box body, the bottom of the bearing box is provided with a long strip opening, and the sliding-out box body is arranged at an opening of the vehicle body.

[0020] By adopting the above technical scheme, the composite slide rail mechanism, the driving device and part of the support frame are integrally arranged in the bearing box, which can isolate the influence of the external environment on the composite slide rail mechanism and the driving device, facilitate installation and disassembly, have an attractive appearance and can increase the internal use space of the vehicle.

[0021] Preferably, the lower part of the bearing box is provided with a long strip opening, and the bearing box passes through the long strip opening from below the support frame.

[0022] By adopting the above technical scheme, the sliding-out of the sliding-out box body is facilitated, and space can be saved.

[0023] Preferably, the driving device comprises a rack, a driving seat, a motor, a speed reducer, a gear and a rack frame, the rack is arranged on the rack frame, the motor is arranged on the driving seat, the output shaft of the motor is connected with the speed reducer, the output shaft of the speed reducer is connected with the gear, the motor drives the gear to rotate through the speed reducer, the tooth surface of the gear is engaged with the tooth surface of the rack, the driving seat, the motor and the speed reducer are fixed on the support frame, the rack is arranged on the rack frame, and the rack frame is fixed on the bearing box, so as to convert the rotary motion of the gear into the linear motion of the rack.

[0024] By adopting the above technical scheme, the driving device converts the rotary motion of the gear into the linear motion of the rack, drives the sliding-out box body to slide out and retract.

[0025] Preferably, the rack frame is fixed on the bearing box, the two ends of the rack frame are both provided with a first limiting baffle and a second limiting baffle, the first limiting baffle is arranged in correspondence with the first limiting block, and the second limiting baffle is arranged in correspondence with the second limiting block.

[0026] By adopting the above technical scheme, when the sliding-out box slides out, the first limiting baffle cooperates with the first limiting block to drive the guide to slide out; when the sliding-out box is retracted, the second limiting baffle cooperates with the second limiting block to drive the guide to retract.

[0027] 1. The first sliding combination guide rail and the second sliding combination guide rail are connected with the guide to form a composite slide rail mechanism, which is integrally arranged in the same two bearing boxes corresponding to the vehicle sliding-out box, can realize two-stage extension and retraction, increases the vehicle use space, saves space, and facilitates quick installation and disassembly.

[0028] 2. The length of the first sliding combination guide rail, the second sliding combination guide rail and the guide can be adjusted according to the requirements of different application scenarios.

[0029] 3. The three metal plates constituting the sliding combination guide rail clamp the balls, which facilitates the limiting of the balls on the circulating raceway and avoids the falling of the balls.

[0030] 4. The balls in the first circulating raceway circulate and roll, which can enable the first sliding combination guide rail and the second sliding combination guide rail to obtain uniform bearing capacity at any position, and improve the bearing capacity and stability of the vehicle sliding-out system. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a structure schematic view of the composite slide rail mechanism in the specific embodiment of the present application.

[0032] Figure 2 It is a front view of the composite slide rail mechanism in the specific embodiment of the present application.

[0033] Figure 3 It is a structure schematic view of the guide in the specific embodiment of the present application.

[0034] Figure 4 It is a structure schematic view of the first sliding combination guide rail in the specific embodiment of the present application.

[0035] Figure 5 It is a structure schematic view of the first sliding combination guide rail in the specific embodiment of the present application.

[0036] Figure 6 It is a sectional view of the first sliding combination guide rail in the specific embodiment of the present application.

[0037] Figure 7 It is a structure schematic view of the second sliding combination guide rail in the specific embodiment of the present application.

[0038] Figure 8 It is a structure schematic view of the second sliding combination guide rail in the specific embodiment of the present application.

[0039] Figure 9 Figure 2 is a side view of the vehicle body in the embodiment of the present application.

[0040] Figure 10 Figure 3 is a schematic view of the vehicle body structure with the slide-out box fully extended in the embodiment of the present application.

[0041] Figure 11 Figure 4 is a sectional view of the vehicle body with the slide-out box fully extended in the embodiment of the present application.

[0042] Figure 12 Figure 5 is a sectional view of the vehicle body with the slide-out box fully retracted in the embodiment of the present application.

[0043] Figure 13 Figure 6 is a front view of the slide-out box structure in the embodiment of the present application.

[0044] Figure 14 Figure 7 is a schematic view of the box structure carrying the box in the embodiment of the present application.

[0045] Figure 15 Figure 8 is a schematic view of the support frame structure in the embodiment of the present application.

[0046] Figure 16 Figure 9 is a front view of the box carrying the box in the embodiment of the present application.

[0047] Figure 17 Figure 10 is an exploded schematic view of the drive device in the embodiment of the present application.

[0048] Figure 18 Figure 11 is a schematic view of the internal structure of the box carrying the box in the embodiment of the present application.

[0049] Figure 19 Figure 12 is an exploded schematic view of the composite slide rail mechanism in the embodiment of the present application.

[0050] Figure 20 Figure 13 is an exploded schematic view of the vehicle slide-out system in the embodiment of the present application.

[0051] Figure 21 Figure 14A, 14B, 14C are perspective views, sectional views of the internal structure of the slide-out box, the box carrying the box fully extended in the embodiment of the present application.

[0052] Figure 22 Figure 15A, 15B, 15C are perspective views, sectional views of the internal structure of the slide-out box, the box carrying the box fully retracted in the embodiment of the present application.

[0053] Explanation of reference numerals: 1 slide-out box body; 2 bearing box; 3 support frame; 301 support bottom plate; 302 support top plate; 303 support vertical plate; 4 rack; 5 guide; 501 first guide groove; 502 second guide groove; 503A first guide slide; 503B second guide slide; 504A first control block; 504B second control block; 6 first sliding combination guide rail; 601 first thick metal plate; 602 first medium metal plate; 603 first thin metal plate; 604 first circulating rolling track; 605 first mounting hole; 606 first connecting threaded hole; 607 first connecting through hole; 7 second sliding combination guide rail; 701 second thin metal plate; 702 second medium metal plate; 703 second thick metal plate; 704 second circulating rolling track; 705 second mounting hole; 706 second connecting threaded hole; 707 second connecting through hole; 8 gear; 9 rack frame; 10 motor; 11 drive seat; 12A first limit stopper; 12B second limit stopper; 13 speed reducer; 14A first limit stop plate; 14B second limit stop plate; 15 vehicle body; 16 ball; 17 first guide lip; 18 long strip opening; 19 first fixing hole; 20 second fixing hole; 21 third fixing hole; 22 second guide lip; 23 drive device. DETAILED DESCRIPTION

[0054] The following will be described in detail below with reference to the accompanying drawings. Figures 1-22 The present application is further described in detail.

[0055] Referring to Figure 1 , 2 , 3, a composite sliding rail mechanism: comprising a first sliding combination guide rail 6, a second sliding combination guide rail 7 and a guide 5, the two sides of the guide 5 are respectively provided with a first guide groove 501 and a second guide groove 502, the upper and lower sides of the first guide groove 501 are provided with a first guide slide 503A, the upper and lower sides of the second guide groove 502 are provided with a second guide slide 503B, the first sliding combination guide rail 6 and the first guide slide 503A are correspondingly arranged, the second sliding combination guide rail 7 and the second guide slide 503B are correspondingly arranged, the first sliding combination guide rail 6 and the second sliding combination guide rail 7 not only have the functions of guide rails and sliders, but also have the purpose of bearing the weight of cantilever, which are composite guide rails, the guide 5 not only has the function of a connecting plate, but also has the function of a slider that can slide, and also has the purpose of bearing the weight of guide, which is a composite guide. The guide 5, the first sliding combination guide rail 6 and the second sliding combination guide rail 7 are combined into a composite sliding rail mechanism. The two sides of the first guide groove 501 are provided with a first control block 504A and a second control block 504B, which can effectively control the extension length of the composite sliding rail mechanism.

[0056] Referring to Figure 4 , 5, 6, the first sliding combined guide rail 6 is composed of a first thick metal plate 601, a first medium metal plate 602 and a first thin metal plate 603, two first circulating raceways 604 capable of accommodating the balls 16 are arranged between the three metal plates, the two first circulating raceways 604 are symmetrical, have the same specification and are parallel to each other, the first circulating raceway 604 and the first guide lip 17 are half shapes corresponding to each other on the three metal plates, and the three metal plates are combined to form the complete first circulating raceway 604 and the first guide lip 17. The first connecting threaded holes 606 and the first connecting through holes 607 are arranged on the side surfaces of the three metal plates, the balls 16 are clamped, the diameter of the ball 16 is smaller than that of the first circulating raceway 604, the ball 16 uniformly slides in the first circulating raceway 604, and the three metal plates are clamped and fixed, so that the ball 16 can leak out of part of the surface of the first circulating raceway 604, facilitating the sliding of the ball 16 in the first guide groove 501, the combination of the three metal plates, the first circulating raceway 604 and the circulating ball 16 forms two rows of respective circulating systems which are parallel to each other, and finally forms the first sliding combined guide rail 6.

[0057] With reference to Figure 7 , 8 , the second sliding combined guide rail 7 is longer than the first sliding combined guide rail 6, and the number of raceways and balls is also larger, but the principle is the same; including a second thin metal plate 701, a second intermediate metal plate 702 and a second thick metal plate 703, three metal plates are arranged between the three metal plates, three second circulating raceways 704 capable of accommodating the balls 16 are arranged, the second circulating raceway 704 and the second guide lip 22 are half shapes on the three metal plates, and the three metal plates are combined to form the complete second circulating raceway 704 and the second guide lip 22. The second connecting threaded holes 706 and the second connecting through holes 707 are arranged on the side surfaces of the three metal plates, the balls 16 are clamped and fixed, the balls 16 uniformly slide in the second circulating raceway 704, and the three metal plates are clamped and fixed, so that the ball 16 can leak out of part of the surface of the second circulating raceway 704, facilitating the sliding of the ball 16 in the second guide groove 502 of the guide 5, the combination of the three metal plates and the circulating ball 16 forms three rows of respective circulating systems which are parallel to each other, and finally forms the second sliding combined guide rail 7.

[0058] With reference to Figures 9-17The vehicle sliding-out system comprises a composite sliding rail mechanism, a driving device 23, a support frame 3, a bearing box 2 and a sliding-out box 1. The first sliding combination guide rail 6 is fixed on the support frame 3, and the second sliding combination guide rail 7 is fixed on the bearing box 2. The weight of the bearing box 2 is applied to the guide 5 through the second sliding combination guide rail 7. The force applied to the guide 5 is applied to the support frame 3 through the first sliding combination guide rail 6, so that the weight of the entire sliding-out box 1 is applied to the support frame 3. The lower part of the support frame 3 is fixed on the vehicle body 15. The support frame 3 is in the shape of an I-beam and comprises a support bottom plate 301, a support top plate 302 and a support vertical plate 303. The first sliding combination guide rail 6 is connected to the support frame 3 through the third fixing hole 21. The support frame 3 stably supports the sliding-out box 1 and the bearing box 2. The long strip opening 18 arranged on the lower part of the bearing box 2 in the length direction facilitates the sliding-out of the sliding-out box 1. The long strip opening 18 of the lower part of the bearing box 2 passes through the support vertical plate 303. The first fixing hole 19 arranged on the side surface of the bearing box 2 is used for fixing the second sliding combination guide rail 7.

[0059] Referring to Figure 17 , 18 As shown in the figure, the upper surface of the support frame 3 is connected with the driving device 23, which comprises a driving seat 11. The driving seat 11 is in the shape of an L. The horizontal section of the driving seat 11 is fixed on the upper surface of the support frame 3. The driving seat 11 is connected with a motor 10 and a speed reducer 13. The output shaft of the motor 10 is connected with the speed reducer 13. The output shaft of the speed reducer 13 is connected with a gear 8. The tooth surface of the gear 8 is engaged with the tooth surface of a rack 4. The rack 4 is fixed on the upper surface of a rack frame 9. The rack frame 9 is fixed on the bearing box 2 through the second fixing hole 20 arranged on the upper surface of the bearing box 2. The rotary motion of the gear 8 is converted into the linear motion of the rack 4. The rack 4 controls the rack frame 9 to drive the bearing box 2 to move. The internal structure of the bearing box 2 when sliding out is shown in the figure. Figure 18

[0060] Referring to Figure 19 , 20 ​As shown, the first sliding combination guide rail 6 is provided with threaded through holes 605 at both ends, and is fixed on the support frame 3 through the third fixing hole 21 and remains unchanged. The first thick metal plate 601 is thickened to connect the support frame 3 and leave a sliding gap for the guide 5, so as to avoid interference between the support frame 3 and the side surface of the guide 5. The first control block 504A prevents the guide 5 from slipping off. The second sliding combination guide rail 7 is provided with threaded through holes 705 at both ends and in the middle, and is connected with the first fixing hole 19 of the bearing box 2. The second thick metal plate 703 is thickened to leave a sliding gap for the bearing box 2 and the guide 5, so as to facilitate the back-and-forth sliding of the bearing box 2. The guide 5 is provided with a first limiting block 12A and a second limiting block 12B on the upper surface. The lower surface of the rack 9 is provided with a first limiting baffle 14A and a second limiting baffle 14B at both ends. The first limiting block 12A and the first limiting baffle 14A are correspondingly arranged, and the second limiting block 12B and the second limiting baffle 14B are correspondingly arranged. When the sliding rail mechanism is extended or retracted, the guide 5 is driven to slide back and forth.

[0061] Reference Figure 21 A, 21B, 21C, When the sliding box 1 slides out, the rack 9 and the side surface of the second sliding combination guide rail 7 are fixed on the side wall in the bearing box 2. The rack 4 converts the spiral motion into linear motion under the action of the gear 8. The rack 9 pulls the bearing box 2 to move. The bearing box 2 drives the second sliding combination guide rail 7 to slide. When the first limiting baffle 14A hits the first limiting block 12A, the guide 5 is driven to slide. When the first control block 504A hits one side of the first sliding combination guide rail 6, the movement stops, and the box is completely slid out.

[0062] Reference Figure 22 A, 22B, 22C, When the sliding box 1 is retracted, the gear 8 is reversed under the action of the speed reducer 13, driving the rack 4 and the rack 9 to pull the bearing box 2. The bearing box 2 drives the second sliding combination guide rail 7 to slide back. When the second sliding combination guide rail 7 slides, the second limiting baffle 14B hits the second limiting block 12B, driving the guide 5 to slide. When the second control block 504B hits the other side of the first sliding combination guide rail 6, the movement stops, and the box is completely retracted.

[0063] The above description of disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A composite slide rail mechanism, comprising a guide (5), a first sliding combined guide rail (6), and a second sliding combined guide rail (7), the first sliding combined guide rail (6) and the second sliding combined guide rail (7) being installed in parallel on the guide (5).

2. The composite slide mechanism of claim 1, wherein, Both sides of the guide (5) are respectively provided with a first guide groove (501) and a second guide groove (502), the first guide groove (501) is provided with a first guide slide (503A) above and below, the second guide groove (502) is provided with a second guide slide (503B) above and below, the first sliding combined guide rail (6) and the first guide slide (503A) are correspondingly arranged, and the second sliding combined guide rail (7) and the second guide slide (503B) are correspondingly arranged.

3. The composite slide mechanism of claim 2, wherein, Both sides of the first guide groove (501) are fixed with a first control block (504A) and a second control block (504B).

4. The composite slide mechanism of claim 3, wherein: The first sliding combined guide rail (6) comprises three metal plates with different thicknesses, and corresponding first circulating tracks (604) are arranged between each two of the three metal plates in parallel, a plurality of balls (16) are arranged in the first circulating tracks (604), the balls (16) uniformly slide in the first circulating tracks (604), can leak part of the surface of the balls (16), and slide on the corresponding first guide slide (503A), the combination of the three metal plates, the first circulating tracks (604), and the balls (16) constitutes the first sliding combined guide rail (6), and the second sliding combined guide rail (7) has the same principle as the first sliding combined guide rail (6).

5. The composite slide mechanism of claim 4, wherein: The first circulating tracks (604) are half shapes corresponding to each other on the three metal plates, complete first circulating tracks (604) are formed between each two of the three metal plates in parallel, the diameter of the balls (16) is smaller than that of the first circulating tracks (604), the first circulating tracks (604) clamp the balls (16), and the balls (16) can circulate and roll in the first circulating tracks (604).

6. A vehicle sliding-out system, comprising a composite slide rail mechanism, a driving device (23), a support frame (3), a bearing box (2), and a sliding-out box body (1), the composite slide rail mechanism comprising a first sliding combined guide rail (6), a second sliding combined guide rail (7), and a guide (5), the first sliding combined guide rail (6) being fixed on the support frame (3), the second sliding combined guide rail (7) being fixed on the bearing box (2), the driving device (23) being fixed on the support frame (3), the support frame (3) being fixed on a vehicle body (15), the bearing box (2) being fixed on both sides of the sliding-out box body (1), the bearing box (2) being provided with a long strip opening (18) at the bottom, and the sliding-out box body (1) being arranged at an opening of the vehicle body (15).

7. A vehicle composite slide-out system as in claim 6, wherein, The lower part of the bearing box (2) is provided with a long strip opening (18), and the bearing box (2) passes through below the support frame (3) through the long strip opening (18).

8. A vehicle ejection system according to claim 6, wherein The upper portion of the guider (5) is provided with a first limiting block (12A) and a second limiting block (12B).

9. A vehicle ejection system according to claim 8, wherein The driving device (23) comprises a rack (4), a driving seat (11), a motor (10), a speed reducer (13), a gear (8) and a rack frame (9), the motor (10) is installed on the driving seat (11), the output shaft of the motor (10) is connected with the speed reducer (13), the output shaft of the speed reducer (13) is connected with the gear (8), the motor (10) drives the gear (8) to rotate through the speed reducer (13), the tooth surface of the gear (8) is engaged with the tooth surface of the rack (4), the driving seat (11), the motor (10) and the speed reducer (13) are fixed on the support frame (3), the rack (4) is installed on the rack frame (9), and the rack frame (9) is fixed on the bearing box (2), and the rotating motion of the gear (8) is converted into the linear motion of the rack (4).

10. A vehicle ejection system according to claim 9, wherein The rack frame (9) is fixed on the bearing box (2), both ends of the rack frame (9) are provided with a first limiting baffle (14A) and a second limiting baffle (14B), the first limiting baffle (14A) is correspondingly arranged with the first limiting block (12A), and the second limiting baffle (14B) is correspondingly arranged with the second limiting block (12B).

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