Heavy-duty damper bearing hinge
By designing the bearing hinge's base plate and bearing seat base plate structure, and utilizing the bearing's load-bearing capacity to disperse stress, the problem of steel damper hinges being prone to deformation and inflexible opening and closing under high wind pressure environments was solved, achieving high-strength and flexible damper operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN FENGLIANG TECH CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-06-30
AI Technical Summary
Existing steel damper hinges are prone to deformation and inflexible operation under high wind pressure environments, and traditional pin assemblies are prone to problems such as stainless steel plate deformation and breakage and detachment at the connection.
A heavy-duty damper bearing hinge was designed, consisting of a shaft seat base plate, a bearing seat base plate, and a pin. It uses the bearing to bear the load and distribute the stress, and achieves rotation by using the bearing instead of friction rotation, thereby enhancing the overall strength and flexibility.
It achieves high strength and flexible opening and closing of heavy-duty dampers, avoids deformation of the stainless steel plate of the latch assembly and breakage at the connection, and improves service life.
Smart Images
Figure CN224432288U_ABST
Abstract
Description
Technical Field
[0001] This utility model pertains to door and window parts, specifically to the bearing hinge of a heavy-duty airlock door in an underground mine tunnel. Background Technology
[0002] Underground mining operations require adequate airflow, so multiple ventilation shafts are installed underground. These shafts are interconnected, and ventilation volume is regulated by air doors installed in the shafts. Air doors are commonly made of wood or bamboo, which are lightweight and have moderate compressive strength. However, these types of air doors are not suitable for shafts with high air pressure. For shafts with high air pressure, steel air doors are required. However, steel air doors are heavy (door panel weight ≥ 200kg), and when using traditional latch hinges, problems such as hinge deformation and inflexible opening and closing occur.
[0003] To address the aforementioned issues, patent document CN219119010U discloses a hinge for precision-grade heavy-duty doors. It reveals a design utilizing a bushing assembly fixedly connected to the door frame and a pin assembly fixedly connected to the door panel. The pin assembly, through a buffer assembly and a bearing assembly, achieves rolling engagement, resulting in flexible rotation of the heavy-duty door and minimizing assembly gaps and achieving high precision. However, this design has some practical problems: the pin mounting section is welded to a stainless steel plate, which is then fixed to the door panel. The pin primarily contacts the stainless steel plate through the mounting section, leading to stress concentration and potential issues such as deformation of the stainless steel plate and breakage or detachment at the connection point. Utility Model Content
[0004] The purpose of this invention is to overcome the problem of insufficient strength of existing bearing hinges and to provide a heavy-duty damper bearing hinge with higher strength and more flexible opening and closing.
[0005] The technical solution adopted by this utility model to solve its technical problem is: a heavy-duty damper bearing hinge, including a shaft seat base plate and a bearing seat base plate. The shaft seat base plate is provided with a shaft seat wall plate assembly. One end of the shaft seat wall plate assembly is vertically fixed to the shaft seat base plate, and a pin is vertically fixed at the bottom of the other end. The shaft seat wall plate assembly is composed of several parallel shaft seat wall plates spaced apart. The shaft seat wall plates are connected and fixed by reinforcing ribs I. A bearing seat is fixed on the bearing seat base plate, and a bearing is provided on the bearing seat. The inner hole of the bearing matches the pin. Several bolt mounting holes are distributed at intervals on the shaft seat base plate and the bearing seat base plate.
[0006] Optionally, the bearing seat wall panel assembly consists of two bearing seat wall panels, and the longitudinal section of the bearing seat wall panel is "L" shaped.
[0007] Optionally, a reinforcing rib II is provided between the bearing housing and the bearing housing base plate.
[0008] The usage and principle of this utility model are as follows: In use, the base plate of the bearing seat is fixed to the door panel with bolts, and the base plate of the bearing seat is fixed to the door frame with bolts. The pin is inserted into the bearing, and the heavy-duty damper can be opened and closed. Its feature is that the bearing bears the force from the pin, and the rotation is achieved by the bearing, replacing the original friction rotation, so that the heavy-duty damper is more flexible when rotating. In addition, the stress on the pin is evenly distributed to the entire base plate of the bearing seat through the bearing seat wall plate assembly, which effectively improves the strength of the product.
[0009] Compared with the prior art, the present invention has at least the following advantages: the present invention has higher overall strength and more flexible opening and closing of the door. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model;
[0011] Figure 2 This is a top view schematic diagram of the shaft seat wall panel of this utility model;
[0012] The following are the detailed markings in the attached drawings: 1. Shaft seat base plate; 2. Bearing seat base plate; 3. Pin; 4. Shaft seat wall plate; 5. Reinforcing rib I; 6. Bearing seat; 7. Bearing; 8. Bolt mounting hole; 9. Reinforcing rib II. Detailed Implementation
[0013] The specific embodiments of this utility model are described below, but the embodiments are merely illustrative and not limiting.
[0014] refer to Figure 1 and Figure 2In this embodiment, the heavy-duty damper bearing hinge includes a bearing base plate 1 and a bearing base plate 2. Both the bearing base plate and bearing base plate are rectangular and made of steel. A bearing wall plate assembly is provided on the bearing base plate. One end of the bearing wall plate assembly is vertically fixed to the bearing base plate, and the bottom of the other end is vertically fixed with a pin 3. The pin is made of high-strength metal and has a "T"-shaped cross-section. The bearing wall plate assembly consists of two parallel bearing wall plates 4 spaced apart. The longitudinal section of the bearing wall plates is "L"-shaped. The bearing wall plates are connected and fixed by reinforcing ribs I5. The pin is vertically welded to the bearing wall plates. The bearing wall plates, reinforcing ribs I, and the bearing base plate are welded into a single unit. A bearing housing 6 is fixed on the bearing housing base plate. The bearing housing base plate and the bearing housing are welded into a whole. The bearing housing is equipped with a bearing 7. The bearing housing is a bearing box with a "T"-shaped cavity inside. The bearing is placed in the cavity and fixed by the top cover plate. The cover plate has holes. The inner hole of the bearing matches the pin. The bearing and the pin are set vertically. The pin is inserted into the bearing. Under the action of the weight of the damper, the pin applies a lateral force to the bearing. The rotation of the pin drives the rotation of the bearing. Several bolt mounting holes 8 are distributed at intervals on the bearing housing base plate and the bearing housing base plate. They match the holes on the door panel and the door frame. The bearing housing base plate and the bearing housing base plate are fixed on them by bolts.
[0015] In this embodiment, in order to improve the strength of the component, an "L"-shaped reinforcing rib II9 is welded between the bearing housing and the bearing housing base plate, so that the stress can be better distributed to the entire bearing housing base plate.
[0016] The above description is merely a preferred embodiment of this utility model and is not intended to limit this embodiment in any way. Any person skilled in the art can make many possible variations and modifications to this invention, or modify it into equivalent embodiments, without departing from the scope of the invention's technical solution, using the methods and techniques disclosed above; all such modifications shall still fall within the protection scope of this utility model.
Claims
1. A heavy-duty damper bearing hinge, comprising a bearing seat base plate (1) and a bearing seat base plate (2), characterized in that: The bearing base plate is provided with a bearing wall plate assembly. One end of the bearing wall plate assembly is fixed vertically to the bearing base plate, and the bottom of the other end is fixed vertically with a pin (3). The bearing wall plate assembly is composed of several parallel bearing wall plates (4) spaced apart. The bearing wall plates are connected and fixed by reinforcing ribs I (5). The bearing base plate is fixed with a bearing seat (6), and the bearing seat is provided with a bearing (7). The inner hole of the bearing matches the pin. Several bolt mounting holes (8) are distributed at intervals on the bearing base plate and the bearing seat base plate.
2. The heavy-duty damper bearing hinge according to claim 1, characterized in that: The bearing seat wall panel assembly consists of two bearing seat wall panels, and the longitudinal section of the bearing seat wall panel is "L" shaped.
3. The heavy-duty damper bearing hinge according to claim 1, characterized in that: A reinforcing rib II (9) is provided between the bearing housing and the bearing housing base plate.