Built-in safety lock of cab door

Abstract

The utility model relates to a built-in safety lock of a cab door, which is characterized in that a cab comprises a cab body and a cab door, the built-in safety lock comprises a locking hole arranged on the side end face of the cab door, a guide hole is arranged on the cab body opposite to the locking hole, a locking block is horizontally and slidably connected in the guide hole, a first cavity is arranged in the locking block, and a second cavity is arranged in the first cavity. A guide part is vertically and slidably connected into the first cavity, a vertical rod is integrally arranged on the upper surface of the guide part, a through hole is formed in the position, right opposite to the vertical rod, of the locking block, a stepped hole is formed in the position, located above the through hole, of the cab body, and a T-shaped limiting column is movably inserted into the stepped hole. According to the device, the driving door can be opened only when the locking block is unlocked after being closed, the situation that a driver opens the vehicle door at will under the condition that attention is not concentrated is avoided, the safety of the vehicle door in the opening process is improved, and the device is suitable for industrial production and has very high practicability.

Description

Technical Field

[0001] This utility model belongs to the technical field of driver's cab, and particularly relates to a built-in safety lock for driver's cab doors. Background Technology

[0002] In existing technologies, vehicle door accidents mainly fall into two categories: first, ordinary vehicles colliding with pedestrians / vehicles when opening the door (common in urban areas); and second, construction vehicles with cabs high off the ground, causing personnel to fall (in industrial scenarios). Existing solutions such as radar warnings and limit switches are only stopgap measures—radar has blind spots and a high false alarm rate, and limit switches cannot actively prevent falls, leading to injuries and fatalities, posing significant safety hazards. Therefore, this paper aims to propose a built-in safety lock for the driver's cab door, which can prevent drivers from opening the door at will, reduce the occurrence of door-opening accidents, and improve the safety of the driver's cab door during opening. Utility Model Content

[0003] The technical problem this utility model aims to solve is how to improve the safety of personnel when opening vehicle doors and avoid dangerous situations such as door-opening accidents. In order to improve its shortcomings, this utility model provides a built-in safety lock for the driver's cab door.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A built-in safety lock for a driver's cab door is disclosed. The driver's cab includes a cab body and a driver's door. A locking hole is formed on the side end face of the driver's door. A guide hole is formed on the cab body opposite the locking hole. A locking block is horizontally slidably connected within the guide hole. A first cavity is formed inside the locking block. A guide member is vertically slidably connected within the first cavity. A vertical rod is integrally formed on the upper surface of the guide member. A through hole is formed in the locking block opposite the vertical rod. A stepped hole is formed in the cab body above the through hole. A T-shaped limiting post is movably inserted into the stepped hole. When the locking block is inserted into the locking hole, the limiting post is inserted into the corresponding through hole. A second cavity is formed in the locking block above the guide member. A miniature servo cylinder is fixedly installed in the second cavity. The free end of the piston rod of the miniature servo cylinder is fixedly connected to the upper end of the guide member. A servo electric cylinder is fixedly installed on the inner wall of the guide hole on the right side of the guide member. The free end of the servo electric cylinder is fixedly connected to the right end face of the guide member.

[0006] Compared with the prior art, the beneficial effects of this utility model are: by controlling the locking block and the internal guide, the driver's door can be opened only after the locking block is unlocked, which avoids the driver opening the door at will when the driver is not paying attention, thus improving the safety of the door during the opening process. This device is suitable for industrial production and has strong practicality.

[0007] As a preferred embodiment, the locking block is L-shaped, with its horizontal section movably inserted into the locking hole, and the guide member includes an integrally formed horizontal section, an upwardly inclined section, and a guide section.

[0008] As a preferred embodiment, a guide post is integrally provided at the bottom of the first cavity located at the guide section, and a blind hole for inserting the guide post is opened at the bottom of the guide section. The upper end of the guide section is fixedly connected to the free end of the piston rod of the micro servo electric cylinder.

[0009] As a preferred embodiment, at least three sets of limiting posts and vertical rods are provided corresponding to each other. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0012] In the diagram: 1. Cab body, 2. Cab door, 3. Locking hole, 4. Guide hole, 5. Locking block, 6. First cavity, 7. Guide component, 701. Horizontal section, 702. Inclined section, 703. Guide section, 8. Vertical rod, 9. Through hole, 10. Step hole, 11. Limiting post, 12. Second cavity, 13. Miniature servo electric cylinder, 14. Servo electric cylinder, 15. Guide post. Detailed Implementation

[0013] The technical solution of this application will be further described below with reference to the accompanying drawings and embodiments.

[0014] like Figure 1-2The diagram shows a built-in safety lock for a driver's cab door. The cab includes a cab body 1 and a driver's door 2. A locking hole 3 is provided on the side face of the driver's door 2. A guide hole 4 is provided on the cab body 1 opposite the locking hole 3. A locking block 5 is horizontally slidably connected within the guide hole 4. To ensure the sliding stability of the locking block 5 within the guide hole 4, a protruding ridge is provided at the bottom of the guide hole 4, and a groove is provided on the bottom surface of the locking block 5. A first cavity 6 is provided inside the locking block 5. A guide member 7 is vertically slidably connected within the first cavity 6. A vertical rod 8 is integrally provided on the upper surface of the guide member 7. A through hole 9 is provided in the locking block 5 opposite the vertical rod 8. A stepped hole 10 is provided in the cab body 1 above the through hole 9. A T-shaped limiting post 11 is movably inserted into the stepped hole 10. When locked... When block 5 is inserted into locking hole 3, limiting post 11 is inserted into corresponding through hole 9. Locking block 5 located above guide 7 has a second cavity 12. Miniature servo cylinder 13 is fixedly installed in the second cavity 12. Miniature servo cylinder 13 is fixed in the second cavity 12 by bolts. The free end of piston rod of miniature servo cylinder 13 is fixedly connected to the upper end of guide 7. The free end of piston rod is fixedly connected to guide 7 by means of pin or other common fixed connection methods. Servo electric cylinder 14 is fixedly installed on the inner wall of guide hole 4 on the right side of guide 7. Servo electric cylinder 14 with T-shaped guide rod is used here to improve the stability of locking block 5 during movement. The free end of servo electric cylinder 14 is fixedly connected to the right end face of guide 7. The locking block 5 is L-shaped, and its horizontal section 701 is movably inserted into the locking hole 3. The guide member 7 includes an integrally formed horizontal section 701, an upwardly inclined section 702, and a guide section 703. The structure of the guide member 7 is an adaptive configuration in this solution, and its shape can be adjusted as needed. A guide post 15 is integrally formed at the bottom of the first cavity 6 located at the guide section 703. A blind hole for inserting the guide post 15 is opened at the bottom of the guide section 703. The upper end of the guide section 703 is fixedly connected to the free end of the piston rod of the micro servo cylinder 13. The cooperation between the guide post 15 and the blind hole is designed to improve the stability of the guide member 7 during vertical movement. At least three sets of limiting posts 11 and vertical rods 8 are provided corresponding to each other.

[0015] The working process of this utility model is as follows: When the driver's door 2 is closed and locked to the cab body 1, the driver controls the servo electric cylinder 14 via buttons inside the cab, causing the locking block 5 to move towards the locking hole 3. During this process, the piston rod of the micro servo electric cylinder 13 is always extended, thus causing the vertical rod 8 on the guide 7 to disengage from the through hole 9. When the locking block 5 is inserted into the locking hole 3, the limiting post 11 falls downward into the through hole 9 due to its own weight, limiting the movement of the locking block 5. At the same time, the head of the limiting post 11 rests on the transition of the stepped hole 10. When the driver's door 2 is opened, which requires unlocking the locking block 5, the driver first controls the micro servo cylinder 13 via the buttons in the cab, causing the guide 7 to move vertically upward until the vertical rod 8 is inserted into the through hole 9, pushing out the limiting post 11 that was originally located in the through hole 9, so that the limiting post 11 returns to the step hole 10. Then, the driver controls the servo cylinder 14 to move the entire locking block 5 horizontally to the right, so that the locking block 5 disengages from the locking hole 3, thereby completing the unlocking between the driver's door 2 and the cab body 1, allowing the driver to open the driver's door 2.

[0016] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A built-in safety lock for a driver's cab door, the driver's cab including a driver's cab body (1) and a driver's door (2), characterized in that: The system includes a locking hole (3) on the side end face of the driver's door (2), a guide hole (4) on the cab body (1) opposite to the locking hole (3), a locking block (5) horizontally slidably connected in the guide hole (4), a first cavity (6) inside the locking block (5), a guide member (7) vertically slidably connected in the first cavity (6), a vertical rod (8) integrally provided on the upper surface of the guide member (7), a through hole (9) on the locking block (5) opposite to the vertical rod (8), and a step hole (10) on the cab body (1) above the through hole (9). A T-shaped limiting post (11) is inserted. When the locking block (5) is inserted into the locking hole (3), the limiting post (11) is inserted into the corresponding through hole (9). A second cavity (12) is opened in the locking block (5) located above the guide (7). A micro servo electric cylinder (13) is fixedly installed in the second cavity (12). The free end of the piston rod of the micro servo electric cylinder (13) is fixedly connected to the upper end of the guide (7). A servo electric cylinder (14) is fixedly installed on the inner wall of the guide hole (4) on the right side of the guide (7). The free end of the servo electric cylinder (14) is fixedly connected to the right end face of the guide (7).

2. The built-in safety lock for a driver's cab door according to claim 1, characterized in that: The locking block (5) is L-shaped, and the horizontal section (701) of the locking block (5) is movably inserted into the locking hole (3). The guide (7) includes an integrally formed horizontal section (701), an upwardly inclined section (702), and a guide section (703).

3. The built-in safety lock for a driver's cab door according to claim 2, characterized in that: The bottom of the first cavity (6) located at the guide section (703) is integrally provided with a guide post (15). The bottom of the guide section (703) is provided with a blind hole for the guide post (15) to be inserted. The upper end of the guide section (703) is fixedly connected to the free end of the piston rod of the micro servo electric cylinder (13).

4. A built-in safety lock for a driver's cab door according to any one of claims 1-3, characterized in that: At least three sets of the limiting post (11) and the vertical rod (8) are provided.

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