A port tractor rear sliding door system and vehicle

Abstract

The utility model discloses a kind of port tractor rear sliding door system and vehicle, comprising: door body;Sliding assembly, between door body and vehicle body, it includes push-pull guide rail and limit pulley, the limit pulley is adapted with push-pull guide rail, the sliding connection of both, guide door body along the track defined by push-pull guide rail sliding;Locking assembly, respectively installed in the corresponding position of door body and cab door hole, it includes double-end door lock and two lock catch, two lock catch are respectively fixed at the both ends of cab door hole, the double-end door lock and two lock catch can be respectively adapted to bite;Sealing buffer assembly, installed in the corresponding side of door body, it includes door sealing strip and anti-collision rubber strip.The utility model's port tractor rear sliding door system, door does not need to rely on limit pulley load bearing in non-sliding state, significantly reduce pulley load, effectively prolong the service life of limit pulley.

Description

Technical Field

[0001] This utility model relates to a port tractor rear sliding door system and vehicle, belonging to the field of automotive parts technology. Background Technology

[0002] In port operations, tractor units often need to navigate narrow areas such as container yards and loading / unloading berths. Since the rear sliding door does not need to open outwards or inwards and occupy extra space, it has become a core vehicle body component that is suitable for this scenario and is a key mechanism to ensure flexible vehicle passage and meet the needs of efficient operation.

[0003] However, the port environment presents unique challenges, including high dust levels, abundant gravel, and fluctuating humidity. Combined with the frequent opening and closing of the rear sliding door, the existing structure is prone to several problems: First, the guide rails are mostly designed with side or top openings, allowing dust, gravel, and seawater salt generated during operation to accumulate inside the rails. This causes noticeable jamming when the door slides, sometimes accompanied by harsh noises, severely impacting operational smoothness. Second, the door is only secured by a single lock when closed; when open, it relies on pulleys for continuous load-bearing. Prolonged stress can easily damage the guide rail pulleys. Wear and tear increase the frequency of component replacement; thirdly, the door seals are mostly fixed with adhesive, which are prone to falling off and cracking under the tangential stress of repeated pushing and pulling. In addition, the lack of a buffer structure when the door is closed makes it easy for the door to deform due to direct impact. These two factors together cause the cab to leak water and air, which greatly reduces the driver's comfort; fourthly, the above-mentioned problems such as jamming, component damage, and seal failure require frequent repairs, which not only interrupts the efficiency of port operations, but also leads to a significant increase in the customer's maintenance costs and component replacement costs, increasing the overall cost burden of vehicle use. Summary of the Invention

[0004] To address the problems existing in the prior art, this utility model provides a port tractor rear sliding door system and vehicle.

[0005] To achieve the above objectives, this utility model employs a port tractor rear sliding door system, comprising:

[0006] The door body is the main load-bearing structure of the rear sliding door, which is adapted to the door opening of the cab of the port tractor.

[0007] A sliding assembly is installed between the door body and the vehicle body. It includes a push-pull guide rail and a limiting pulley. The limiting pulley is adapted to the push-pull guide rail. Through the sliding connection between the two, the door body is guided to slide along the trajectory defined by the push-pull guide rail.

[0008] The locking assembly is installed on the corresponding positions of the door body and the driver's cab door opening. It includes a double-headed door lock and two latches. The two latches are fixed at both ends of the driver's cab door opening. The double-headed door lock and the two latches can be adapted and engaged respectively. When the door is in the open state, the double-headed door lock is engaged and fixed with the latch at one end of the door opening. When the door is in the closed state, the double-headed door lock is engaged and fixed with the latch at the other end of the door opening, so as to realize bidirectional locking in the open and closed states of the door.

[0009] A sealing and buffer assembly is installed on the corresponding side of the door body. It includes a door sealing strip and an anti-collision strip. The door sealing strip is attached to the corresponding part of the vehicle body to achieve sealing, dust prevention and sound insulation. The anti-collision strip contacts the door body first when the door is closed to prevent the door body from directly colliding with the vehicle body.

[0010] In some embodiments, the push-pull guide rail includes an upper push-pull guide rail and a lower push-pull guide rail, both of which have a bottom-opening structure.

[0011] In some embodiments, the push-pull guide rail is further provided with a guide rail sealing plate, which includes an upper guide rail sealing plate and a lower guide rail sealing plate, respectively blocking the door mounting sides of the upper push-pull guide rail and the lower push-pull guide rail.

[0012] In some embodiments, the dual-head door lock is installed on the door body, and the dual-head door lock has an inward opening handle and an outward handle. The inward opening handle and the outward handle work together to open the door from the inside and outside.

[0013] In some embodiments, the limiting pulley includes an upper limiting pulley, which includes a support bearing, an upper guide bearing, a T-shaped shaft, a limiting bushing, and a positioning pin.

[0014] The upper end of the T-shaped shaft is connected to two vertically arranged support bearings, which roll along the inner surface of the upper push-pull guide rail. The lower end of the T-shaped shaft passes through a horizontally arranged upper guide bearing and a limiting sleeve. The upper guide bearing rolls in contact with the upper push-pull guide rail to control the movement of the door body along the push-pull guide rail. The end of the T-shaped shaft is provided with an external thread. The T-shaped shaft is threadedly connected to the door body and fixed by a double nut or a lock nut. The limiting sleeve is installed on the T-shaped shaft located between the upper push-pull guide rail and the door body by a positioning pin.

[0015] In some embodiments, the limiting pulley further includes a lower limiting pulley, which includes an anti-fall sleeve, a lower guide bearing, and a rotating shaft; the rotating shaft passes through the anti-fall sleeve and the lower guide bearing sequentially from top to bottom, and the end of the rotating shaft is connected to the door body; the lower guide bearing makes rolling contact with the lower push-pull guide rail, assisting the upper limiting pulley in guiding the door to slide; the anti-fall sleeve protrudes from the outer periphery of the lower limiting pulley and is used to limit the door body when it becomes detached from the upper limiting pulley.

[0016] In some embodiments, the outer periphery of the door body is provided with a rubber strip snap-fit ​​structure, and the door sealing strip has a built-in steel strip, which is snap-fitted into the rubber strip snap-fit ​​structure.

[0017] In some embodiments, the anti-collision strip is made of elastic rubber and is fixed to the side edge of the cab door opening by adhesive or snap-fit; when the door is closed to near the vehicle body, the anti-collision strip first abuts against the corresponding contact surface of the door body.

[0018] In a second aspect, the present invention also provides a vehicle on which the aforementioned port tractor rear sliding door system is installed.

[0019] Compared with the prior art, the port tractor rear sliding door system of this utility model includes a double-headed door lock and two latches. The two latches are respectively fixed at both ends of the cab door opening. The double-headed door lock can be adapted and engaged with the two latches respectively. When the door is open, the double-headed door lock is engaged and fixed with the latch at one end of the door opening; when the door is closed, it is engaged and fixed with the latch at the other end. Through this two-way locking structure, the door does not need to rely on the limit pulley for load-bearing in the non-sliding state, which significantly reduces the load on the pulley and effectively extends the service life of the limit pulley. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the push-pull guide rail of this utility model; in the figure, (A) is the upper push-pull guide rail and (B) is the lower push-pull guide rail;

[0023] Figure 3 This is a schematic diagram of the bidirectional fixing of the vehicle door according to this utility model;

[0024] Figure 4 This is a schematic diagram of the double-headed door lock and the outer handle of this utility model.

[0025] Figure 5 This is a schematic diagram of the limiting pulley of this utility model and its cooperation with the car door; in the figure, (A) is the upper limiting pulley and (B) is the lower limiting pulley;

[0026] Figure 6 This is a schematic diagram illustrating the fit between the car door and the sealing strip according to this utility model;

[0027] In the diagram: 1. Door body; 2. Upper push-pull guide rail; 3. Lower push-pull guide rail; 4. Upper guide rail sealing plate; 5. Lower guide rail sealing plate; 6. Lock; 7. Double-headed door lock; 7-a. Inward opening handle; 8. Outer handle; 9. Upper limit pulley; 9-a. Support bearing; 9-b. Upper guide bearing; 9-c. T-shaped shaft; 9-d. Limiting bushing; 9-e. Positioning pin; 10. Lower limit pulley; 10-a. Anti-fall bushing; 10-b. Lower guide bearing; 10-c. Rotating shaft; 11. Door sealing strip; 11-a. Steel strip; 12. Anti-collision rubber strip; 13. Double nuts. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations thereof. In the absence of conflict, the embodiments and technical features in the embodiments can be combined with each other.

[0029] like Figures 1-6 As shown, a port tractor rear sliding door system includes a door body 1, a sliding assembly, a locking assembly, and a sealing buffer assembly.

[0030] The door body 1 is the main load-bearing structure of the rear sliding door, which is adapted to the door opening of the port tractor cab. It can ensure that the rear sliding door and the door opening of the cab are precisely matched, providing a stable installation foundation for the subsequent sliding components, locking components and sealing buffer components, and ensuring the overall assembly reliability of the system.

[0031] The sliding assembly is installed between the door body 1 and the vehicle body. It includes a push-pull guide rail and a limiting pulley. The limiting pulley is adapted to the push-pull guide rail. Through the sliding connection between the two, the door body 1 is guided to slide along the trajectory defined by the push-pull guide rail. The sliding assembly, through the adaptation design of the limiting pulley and the push-pull guide rail, can reduce the frictional resistance when the door slides, ensure the smooth opening / closing process of the door, and at the same time prevent the door from deviating, thus improving the ease of operation.

[0032] The locking components are respectively installed on the door body 1 and the corresponding positions of the driver's cab door opening. They include a double-headed door lock 7 and two latches 6. The two latches 6 are respectively fixed at both ends of the driver's cab door opening (open end and closed end). The double-headed door lock 7 and the two latches 6 can be adapted and engaged respectively. When the door is in the open state, the double-headed door lock 7 is engaged and fixed with the latch 6 at the open end of the door opening. When the door is in the closed state, the double-headed door lock 7 is engaged and fixed with the latch 6 at the closed end of the door opening, realizing bidirectional locking in the open and closed states of the door. This bidirectional locking structure can prevent the door from loosening due to bumps and shaking when opening and due to sealing pressure when closing. At the same time, it reduces the load on the limit pulley in the non-sliding state, effectively extends the service life of the pulley, and reduces maintenance costs.

[0033] The sealing and buffer assembly is installed on the corresponding side of the door body 1. It includes a door sealing strip 11 and an anti-collision strip 12. The door sealing strip 11 fits against the corresponding part of the vehicle body to achieve sealing, dust prevention and sound insulation. The anti-collision strip 12 contacts the door body 1 first when the door is closed to prevent the door body 1 from directly colliding with the vehicle body. The door sealing strip 11 can isolate external dust, rain and noise, improving the comfort of the cab. The anti-collision strip 12 can absorb the impact force when the door is closed, avoid the door from directly colliding with the metal parts of the vehicle body and causing deformation, extend the service life of the door and the vehicle body, and reduce the problem of sealing failure caused by deformation.

[0034] In some embodiments, such as Figure 2 As shown, the push-pull guide rail includes an upper push-pull guide rail 2 and a lower push-pull guide rail 3. Both of them adopt a bottom-opening structure, which is suitable for the dusty and dirt-prone working environment of the port. It can reduce the accumulation of dust and gravel inside the guide rail, avoid the sliding difficulties caused by dirt jamming, and facilitate the assembly of the car door and the subsequent cleaning and maintenance of the guide rail.

[0035] The push-pull guide rail is also equipped with a guide rail sealing plate, which includes an upper guide rail sealing plate 4 and a lower guide rail sealing plate 5, respectively blocking the lower opening structure of the upper push-pull guide rail 2 and the lower push-pull guide rail 3 on the door mounting side (the door body 1 is assembled onto the push-pull guide rail from this mounting side). This can prevent dust, gravel and other dirt in the port operation environment from entering the push-pull guide rail from the source, avoiding the limit pulley and push-pull guide rail from jamming due to dirt, causing jamming and abnormal noise, while reducing the wear of the guide rail and pulley, further ensuring the smooth sliding of the door and extending the overall service life of the sliding components.

[0036] In some embodiments, such as Figure 4As shown, the dual-head door lock 7 comes with an inner opening handle 7-a and an outer handle 8. The inner opening handle 7-a is located inside the driver's cab, and the outer handle 8 is installed on the outside of the door body 1. The two work together to enable the door to be opened from the inside and outside. The driver can unlock and open the door from inside the driver's cab using the inner opening handle 7-a, and operate it from outside the vehicle using the outer handle 8. There is no need to set up additional transmission components, which reduces the space occupied inside the driver's cab, reduces assembly complexity, and avoids opening failure due to the failure of additional components. It also makes future maintenance and replacement more convenient.

[0037] In some embodiments, such as Figure 5 As shown, the limiting pulley includes an upper limiting pulley 9, which includes a support bearing 9-a, an upper guide bearing 9-b, a T-shaped shaft 9-c, a limiting bushing 9-d, and a positioning pin 9-e.

[0038] The upper end of the T-shaped shaft 9-c is connected to two vertically arranged support bearings 9-a. The two support bearings 9-a roll along the inner surface of the upper push-pull guide rail 2, which can stably bear the vertical load of the door body 1 and prevent the door from sinking. The lower end of the T-shaped shaft 9-c passes through a horizontally arranged upper guide bearing 9-b and a limiting bushing 9-d. The upper guide bearing 9-b rolls in contact with the upper push-pull guide rail 2 to control the movement of the door body 1 along the push-pull guide rail, further improving the accuracy of the door sliding and preventing deviation. The end of shaft 9-c is provided with an external thread. T-shaped shaft 9-c is threaded to the door body 1 and fixed by double nuts 13 or anti-loosening nuts. This can prevent the nuts from loosening under bumpy conditions of the port tractor and ensure that the upper limit pulley 9 is firmly connected to the door body 1. On T-shaped shaft 9-c located between upper push-pull guide rail 2 and door body 1, the limiting bushing 9-d is installed by positioning pin 9-e. The limiting bushing 9-d can limit the axial position of T-shaped shaft 9-c, prevent the upper limit pulley 9 from moving along the shaft, and ensure sliding stability.

[0039] In some embodiments, such as Figure 5 As shown, the limiting pulley also includes a lower limiting pulley 10, which includes an anti-fall bushing 10-a, a lower guide bearing 10-b, and a rotating shaft 10-c.

[0040] The rotating shaft 10-c passes through the anti-fall sleeve 10-a and the lower guide bearing 10-b from top to bottom, and the end of the rotating shaft 10-c is connected to the door body 1. The lower guide bearing 10-b makes rolling contact with the lower push-pull guide rail 3, assisting the upper limit pulley 9 in guiding the door to slide. This utility model adopts a double guide structure with upper and lower double pulleys, which greatly improves the stability and smoothness of the door sliding. The anti-fall sleeve 10-a protrudes from the outer periphery of the lower limit pulley 10 and is used to limit the door body 1 in the vertical direction when the door body 1 is detached from the upper limit pulley 9. This can effectively prevent the door from falling and avoid safety accidents caused by the door falling off under extreme working conditions. At the same time, it reduces damage to the vehicle body and lowers maintenance costs.

[0041] In some embodiments, such as Figure 6 As shown, the outer periphery of the door body 1 is provided with a rubber strip snap-fit ​​structure, and the door sealing strip 11 has a built-in steel strip 11-a, which is snap-fitted with the rubber strip snap-fit ​​structure.

[0042] The steel strip 11-a has a stable elastic clamping force, and its cooperation with the rubber strip snap-fit ​​structure can achieve a firm fixation between the door sealing strip 11 and the door body 1. It can effectively resist the stress generated during the door pushing and pulling process, prevent the door sealing strip 11 from falling off, ensure that it is always in close contact with the corresponding part of the vehicle body, and continuously perform the functions of sealing, dust prevention and sound insulation, reduce the problem of rain and air leakage caused by the sealing strip falling off, and ensure the comfort of the cab in the long term.

[0043] In some embodiments, the anti-collision strip 12 is made of elastic rubber and is fixed to the side edge of the cab door opening by adhesive or snap-fit. When the door is closed close to the vehicle body, the anti-collision strip 12 first abuts against the corresponding contact surface of the door body 1. The elastic rubber material can effectively absorb the impact force when the door is closed, avoiding direct collision between the door body 1 and the metal parts of the vehicle body, thus preventing deformation and extending the service life of the door and the vehicle body. The adhesive or snap-fit ​​fixing method takes into account both the ease of assembly and the reliability of connection, which can adapt to the complex operating conditions of port tractors, reduce the risk of the anti-collision strip 12 falling off, and continuously play a buffering and protective role.

[0044] Finally, this utility model also provides a vehicle, which is a port tractor, and the port tractor is equipped with the aforementioned port tractor rear sliding door system.

[0045] By equipping the port tractor with this rear sliding door system, the port tractor can effectively solve problems such as jamming and abnormal noise, easy damage of parts, failure of seals and safety hazards of traditional rear sliding doors by means of the system's two-way locking, anti-fouling guide rail, anti-falling sealing strip and anti-falling pulley. It not only improves the driver's driving comfort and operation convenience, but also reduces the frequency and cost of maintenance of the vehicle's rear sliding door. It is suitable for the complex working conditions of high dust and bumpy conditions in port operations, and ensures the long-term stable operation of the port tractor.

[0046] The above descriptions are merely embodiments of this utility model, and common technical solutions and / or characteristics known in the scheme are not described in detail here. It should be noted that those skilled in the art can make various modifications, improvements, or equivalent substitutions without departing from the technical solution of this utility model, and all such modifications, improvements, or equivalent substitutions should be covered within the scope of the claims of this utility model. The scope of protection claimed in this application should be determined by the content of its claims, and the detailed descriptions of the embodiments can be used to interpret the content of the claims.

Claims

1. A port tractor rear sliding door system, characterized in that, include: The door body (1) is the main load-bearing structure of the rear sliding door, which is adapted to the door opening of the port tractor cab; A sliding assembly is installed between the door body (1) and the vehicle body. It includes a push-pull guide rail and a limiting pulley. The limiting pulley is adapted to the push-pull guide rail. Through the sliding connection between the two, the door body (1) is guided to slide along the trajectory defined by the push-pull guide rail. The locking assembly is installed on the door body (1) and the corresponding position of the driver's cab door opening. It includes a double-headed door lock (7) and two latches (6). The two latches (6) are fixed at both ends of the driver's cab door opening. The double-headed door lock (7) and the two latches (6) can be adapted and engaged respectively. When the door is in the open state, the double-headed door lock (7) is engaged and fixed with the latch (6) at one end of the door opening. When the door is in the closed state, the double-headed door lock (7) is engaged and fixed with the latch (6) at the other end of the door opening, so as to realize bidirectional locking in the open and closed states of the door. A sealing and buffer assembly is installed on the corresponding side of the door body (1). It includes a door sealing strip (11) and an anti-collision strip (12). The door sealing strip (11) is attached to the corresponding part of the vehicle body to achieve sealing, dust prevention and sound insulation. The anti-collision strip (12) contacts the door body (1) first when the door is closed to prevent the door body (1) from directly colliding with the vehicle body.

2. The port tractor rear sliding door system according to claim 1, characterized in that, The push-pull guide rail includes an upper push-pull guide rail (2) and a lower push-pull guide rail (3), both of which adopt a bottom-opening structure.

3. The port tractor rear sliding door system according to claim 2, characterized in that, The push-pull guide rail is also equipped with a guide rail sealing plate, which includes an upper guide rail sealing plate (4) and a lower guide rail sealing plate (5), respectively blocking the door mounting side of the upper push-pull guide rail (2) and the lower push-pull guide rail (3).

4. The port tractor rear sliding door system according to claim 1, characterized in that, The double-headed door lock (7) is installed on the door body (1). The double-headed door lock (7) comes with an inner opening handle (7-a) and an outer handle (8). The inner opening handle (7-a) and the outer handle (8) work together to open the door from the inside and outside.

5. A port tractor rear sliding door system according to claim 1, characterized in that, The limiting pulley includes an upper limiting pulley (9), which includes a support bearing (9-a), an upper guide bearing (9-b), a T-shaped shaft (9-c), a limiting bushing (9-d), and a positioning pin (9-e). The upper end of the T-shaped shaft (9-c) is connected to two vertically arranged support bearings (9-a), which roll along the inner surface of the upper push-pull guide rail (2). The lower end of the T-shaped shaft (9-c) passes through the horizontally arranged upper guide bearing (9-b) and the limiting bushing (9-d). The upper guide bearing (9-b) rolls in contact with the upper push-pull guide rail (2) to control the movement of the door body (1) along the push-pull guide rail. The end of the T-shaped shaft (9-c) is provided with an external thread. The T-shaped shaft (9-c) is threadedly connected to the door body (1) and fixed by a double nut (13) or a lock nut. The limiting bushing (9-d) is installed on the T-shaped shaft (9-c) located between the upper push-pull guide rail (2) and the door body (1) by a positioning pin (9-e).

6. A port tractor rear sliding door system according to claim 5, characterized in that, The limiting pulley also includes a lower limiting pulley (10), which includes a fall-prevention bushing (10-a), a lower guide bearing (10-b), and a rotating shaft (10-c). The rotating shaft (10-c) passes through the anti-fall bushing (10-a) and the lower guide bearing (10-b) from top to bottom, and the end of the rotating shaft (10-c) is connected to the door body (1); the lower guide bearing (10-b) rolls in contact with the lower push-pull guide rail (3) to assist the upper limit pulley (9) in guiding the door to slide; the anti-fall bushing (10-a) protrudes from the outer periphery of the lower limit pulley (10) and is used to limit the door body (1) when it is detached from the upper limit pulley (9).

7. A port tractor rear sliding door system according to claim 1, characterized in that, The outer periphery of the door body (1) is provided with a rubber strip snap-fit ​​structure, and the door sealing strip (11) has a built-in steel strip (11-a), which is snap-fitted with the rubber strip snap-fit ​​structure.

8. A port tractor rear sliding door system according to claim 1, characterized in that, The anti-collision strip (12) is made of elastic rubber and is fixed to the side edge of the cab door opening by adhesive or snap-fit. When the door is closed to the point of being close to the vehicle body, the anti-collision strip (12) first comes into contact with the corresponding contact surface of the door body (1).

9. A vehicle, characterized in that, The vehicle is equipped with a port tractor rear sliding door system as described in any one of claims 1-8.

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