External enclosure door frame structure

Abstract

The utility model discloses an external enclosure door frame structure which comprises a door frame, a first guide wheel set is arranged on the door frame and comprises a plurality of first guide wheels, the first guide wheels are connected to the left side and the right side of the door frame respectively, guide wheel bases are arranged on the outer sides of the first guide wheels, and rotating rods are inserted in the circle centers of the first guide wheels. The first guide wheel is rotationally connected with the rotating rod, a wheel groove is formed in the guide wheel base, guide grooves are formed in the side walls of the two sides of the wheel groove, the two ends of the rotating rod are inserted into the guide grooves and slidably connected with the guide grooves, the guide grooves are obliquely formed, the sides, facing the middle of the door frame, of the guide grooves are higher, tension springs are connected into the guide grooves, and the other ends of the tension springs are fixedly connected with the rotating rod. The elevator guide wheel device is reasonable in structure, the first guide wheel can move downwards in an inclined mode, abrasion to the first guide wheel in the descending process of the elevator car body is reduced, and therefore an elevator can operate stably.

Description

Technical Field

[0001] This utility model relates to the field of lifting platforms, and in particular to an outer protective door frame structure. Background Technology

[0002] A lifting platform, also known as a lift, is, as the name suggests, a device that uses mechanical or hydraulic means to raise a height. It is widely used in daily life, and most functions of a lifting platform are to lift a car or people to a designated height.

[0003] Each elevator platform has its external enclosure, which is a crucial factor in ensuring the smooth operation of the elevator car. The elevator platform will stop at certain floors, where the door frame structure of the external enclosure will be located. The elevator platform is most prone to vibration when it is stopped at a floor; therefore, the door frame structure is a vital factor in ensuring a smooth stop. How to make the elevator stop more smoothly is a current research and development direction. To address the above issues, a solution is proposed below. Utility Model Content

[0004] The purpose of this utility model is to provide an outer protective door frame structure that has the advantages of reducing the wear of the guide wheels and making the box less prone to vibration during lifting and lowering.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] An external protective door frame structure includes a door frame with a first guide wheel assembly. The first guide wheel assembly includes a plurality of first guide wheels, which are respectively connected to the left and right sides of the door frame. A guide wheel seat is provided on the outer side of each first guide wheel. A rotating rod is inserted into the center of each first guide wheel. The first guide wheel and the rotating rod are rotatably connected. The guide wheel seat has a wheel groove, and guide grooves are provided on the sidewalls of both sides of the wheel groove. Both ends of the rotating rod are inserted into the guide grooves and slidably connected to them. The guide grooves are inclined, with the side facing the middle of the door frame being higher. A tension spring is connected to the guide groove, and the other end of the tension spring is fixedly connected to the rotating rod.

[0007] Preferably, the inner side of the door frame is provided with a vertical sliding groove, a slider is provided in the sliding groove, the slider is slidably connected to the sliding groove, the guide wheel seat is fixedly connected to the slider, a spring is provided in the sliding groove, the lower end of the spring is fixedly connected to the bottom of the sliding groove, and the upper end of the spring is fixedly connected to the slider.

[0008] Preferably, the door frame is also provided with two second guide wheels, which are located on the left and right sides above the door frame, respectively. The two second guide wheels are rotatably connected to the door frame, and the second guide wheels are located in front of the first guide wheel.

[0009] Preferably, both the second guide wheel and the first guide wheel are concave guide wheels, and both the surface of the second guide wheel and the first guide wheel are provided with an anti-wear layer.

[0010] Preferably, the rear side of the door frame is further provided with an extension plate, which is located at the lowest end of the door frame opening and is perpendicular to the door frame.

[0011] Preferably, a plurality of stabilizing plates are fixed at the lower end of the extension plate, and the plurality of stabilizing plates are used to support the extension plate.

[0012] The beneficial effects of this invention are as follows: When the elevator passes through the door frame during its ascent and descent, the elevator presses the first guide wheel into the wheel groove. Due to the elastic force of the tension spring, the first guide wheel rests against both sides of the elevator, allowing for smooth ascent and descent. Because the first guide wheel can retract into the wheel groove, wear caused by the elevator on the first guide wheel is reduced to a certain extent, thus allowing the first guide wheel to maintain a smooth outer surface for a longer period, ensuring the stability of the elevator during operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0014] Figure 2 This is a schematic diagram of the structure used for the rear side of the door frame in an embodiment;

[0015] Figure 3 This is a schematic diagram of the connection structure of the first guide wheel in the embodiment;

[0016] Figure 4 This is a side view schematic diagram of the connection structure of the first guide wheel in the embodiment.

[0017] Reference numerals in the attached diagram: 1. Door frame; 2. First guide wheel; 3. Guide wheel seat; 4. Rotating rod; 5. Guide groove; 6. Tension spring; 7. Slider; 8. Spring; 9. Second guide wheel; 10. Extension plate; 11. Stabilizing plate. Detailed Implementation

[0018] The following description is merely a preferred embodiment of this utility model, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of this utility model's concept should be protected. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom" and "top," "inner" and "outer" refer to directions toward or away from the geometric center of a specific component.

[0019] like Figures 1 to 4As shown, an external protective door frame structure includes a door frame 1. The door frame 1 consists of two side posts, a top connecting rod, and a bottom connecting rod, with an opening formed in the middle for passage. The side of the door frame 1 facing the elevator is designated as the inner side, and the other side as the outer side. An extension plate 10 is provided on the door frame 1, located on the inner side of the door frame 1 and fixed at the lowest end of the opening. When the elevator car is stationary, there is a gap between the elevator car and the door frame 1. The extension plate 10 is horizontally positioned facing inward to cover the gap between the door frame 1 and the elevator car, preventing people from getting stuck in the gap when entering or exiting the elevator car. To ensure the stability of the extension plate 10, several stabilizing plates 11 are fixed at the lower end of the extension plate 10. These stabilizing plates 11 are vertically positioned to improve the load-bearing capacity of the extension plate 10.

[0020] A first guide wheel assembly is provided on the door frame 1, comprising several first guide wheels 2. These first guide wheels 2 are respectively connected to the left and right sides of the door frame 1, i.e., the first guide wheels 2 are fixed to the two side posts and to the inner sides of the side posts. In this application, the first guide wheels 2 are connected to the side posts via guide wheel seats 3. A vertical sliding groove is provided on the inner side of the door frame 1, and a slider 7 is provided within the groove, slidably connected to the groove. The guide wheel seat 3 is fixedly connected to the slider 7; this fixed connection can be achieved through welding or screws and other fasteners to ensure that the guide wheel seat 3 and the slider 7 do not loosen. A spring 8 is provided within the groove; the lower end of the spring 8 is fixedly connected to the bottom of the groove, and the upper end of the spring 8 is fixedly connected to the slider 7. The initial state is defined as when the door frame 1 is not in contact with the elevator car. In the initial state, the slider 7 is located in the middle or slightly above or below the groove, meaning that the slider 7 can slide upwards or downwards in the initial position. When the elevator car moves to the position of the door frame 1, it will exert an upward or downward force on the first guide wheel 2. When the first guide wheel 2 is subjected to force, it will drive the guide wheel seat 3 to move upward or downward, reducing the friction on the first guide wheel 2. Moreover, the first guide wheel 2 and the guide wheel seat 3 are rotatably connected. When the elevator car passes by, the first guide wheel 2 will start to rotate, which can not only make the elevator move smoothly, but also reduce the wear on the first guide wheel 2, thereby extending the service life of the first guide wheel 2.

[0021] A rotating rod 4 is inserted into the center of the first guide wheel 2. The guide wheel seat 3 has a groove, and guide grooves 5 are provided on the side walls of both sides of the groove. The first guide wheel 2 is placed into the groove, and both ends of the rotating rod 4 are respectively engaged in the guide grooves 5 on both sides. The rotating rod 4 and the guide groove 5 are slidably connected, and the first guide wheel 2 and the rotating rod 4 are rotatably connected. A tension spring 6 is connected inside the guide groove 5, and the other end of the tension spring 6 is fixedly connected to the rotating rod 4. When the elevator car passes by, the first guide wheel 2 will drive the rotating rod 4 to move inward towards the groove, reducing the pressure between the first guide wheel 2 and the elevator car, thereby reducing the wear of the first guide wheel 2 and extending its service life.

[0022] In this design, the guide groove 5 is inclined, with the side facing the middle of the door frame 1 being higher. The inclination direction can be set according to requirements. Compared with a horizontal setting, the inclined guide groove 5 can better decompose the force on the first guide wheel 2, thereby reducing the wear of the first guide wheel 2.

[0023] The door frame 1 is also equipped with two second guide wheels 9, which are fixed to the upper ends of the two side columns and are located in front of the first guide wheel 2. The two second guide wheels 9 cooperate with the first guide wheel 2 to increase the guiding range on both sides of the elevator car, thereby increasing the stability of the elevator car.

[0024] Both the second guide wheel 9 and the first guide wheel 2 are concave guide wheels, meaning they are recessed in the middle. This reduces the contact area with the elevator car body. Furthermore, if there are outwardly protruding guide posts on the side of the elevator car body, the second guide wheel 9 and the first guide wheel 2 can also be engaged with these posts, further increasing the stability of the elevator car body. Both the second guide wheel 9 and the first guide wheel 2 have an anti-wear layer on their surfaces, which further extends their service life and ensures that they maintain a complete circular shape, thereby guaranteeing the stability of the elevator car body during operation.

[0025] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An outer perimeter door frame structure, comprising a door frame (1), characterized in that, The door frame (1) is provided with a first guide wheel group, which includes a plurality of first guide wheels (2). The plurality of first guide wheels (2) are respectively connected to the left and right sides of the door frame (1). A guide wheel seat (3) is provided on the outer side of the first guide wheel (2). A rotating rod (4) is inserted at the center of the first guide wheel (2). The first guide wheel (2) and the rotating rod (4) are rotatably connected. A wheel groove is provided on the guide wheel seat (3). Guide grooves (5) are provided on the side walls on both sides of the wheel groove. The two ends of the rotating rod (4) are inserted into the guide grooves (5) and are slidably connected to the guide grooves (5). The guide grooves (5) are inclined and the side facing the middle of the door frame (1) is higher. A tension spring (6) is connected in the guide grooves (5). The other end of the tension spring (6) is fixedly connected to the rotating rod (4).

2. The outer protective door frame structure according to claim 1, characterized in that, The inner side of the door frame (1) is provided with a vertical sliding groove, and a slider (7) is provided in the sliding groove. The slider (7) is slidably connected to the sliding groove. The guide wheel seat (3) is fixedly connected to the slider (7). A spring (8) is provided in the sliding groove. The lower end of the spring (8) is fixedly connected to the bottom of the sliding groove, and the upper end of the spring (8) is fixedly connected to the slider (7).

3. The outer protective door frame structure according to claim 1, characterized in that, The door frame (1) is also provided with two second guide wheels (9). The two second guide wheels (9) are located on the left and right sides above the door frame (1) respectively. The two second guide wheels (9) are rotatably connected to the door frame (1). The second guide wheels (9) are located in front of the first guide wheel (2).

4. The outer protective door frame structure according to claim 3, characterized in that, Both the second guide wheel (9) and the first guide wheel (2) are concave guide wheels, and both the surface of the second guide wheel (9) and the first guide wheel (2) are provided with an anti-wear layer.

5. The outer protective door frame structure according to claim 1, characterized in that, An extension plate (10) is also provided on the rear side of the door frame (1). The extension plate (10) is located at the lowest end of the opening of the door frame (1) and is perpendicular to the door frame (1).

6. The outer protective door frame structure according to claim 5, characterized in that, The lower end of the extension plate (10) is fixed with a plurality of stabilizing plates (11), which are used to support the extension plate (10).

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