Safe adjustable bearing door shaft

Abstract

The utility model discloses a safe adjustable load-bearing door spindle, which relates to the technical field of load-bearing door spindles of heavy side-hung door leaves and comprises an upper door frame, a right door frame, a left door frame and a load-bearing door body, the load-bearing door body is arranged below the upper door frame, the left door frame is arranged on one side of the load-bearing door body, and the right door frame is arranged on the other side of the load-bearing door body. The door body upper shaft is fixedly installed at the upper left end of the load-bearing door body, the shaft pin is inserted into the door body upper shaft, the load-bearing door is integrally made of 45 # steel, the load-bearing strength of the load-bearing door is far higher than that of cast aluminum materials in the market, the safety performance of a heavy door is improved, the notch of the upper shaft is designed, left and right door crack adjustment of installation personnel is facilitated, the fast-installation shaft pin is installed more conveniently and rapidly, and the installation efficiency is improved. The lower shaft adopts the tapered roller bearing design and can bear a 2-ton door body, the safety and reliability of the heavy door are further improved, the upper and lower adjusting jackscrews are arranged, upper and lower door gaps are convenient to adjust, upper and lower bearings are matched, the door opening and closing resistance is reduced, and the heavy door body can be easily opened or closed.

Description

Technical Field

[0001] The utility model relates to the technical field of heavy-duty flat-opening door leaf load-bearing door shafts, in particular to a safe and adjustable load-bearing door shaft. Background Art

[0002] Load-bearing doors usually refer to those designed to bear heavy weight or have special functional requirements, such as doors commonly found in large commercial buildings or industrial facilities. The load-bearing door shaft is an important component used to support and operate the door body, specially designed to bear the weight of the door and ensure its smooth operation. The existing door shaft structures are mainly spring latch structures, hinged door shafts, or welded door shafts. The spring latch door shaft needs to be welded to the door body and cannot be replaced or adjusted. It is generally installed at the upper door shaft position. Due to the nature of the spring mechanism, there is a safety hazard of falling off. The door shaft has a high failure rate due to its thin diameter and there is a risk of breakage. Hinged door shafts are commonly used in wooden doors and fire doors. They are suitable for lighter door bodies. The production process is complicated and difficult to install and adjust. The load-bearing capacity is poor. Heavy doors are prone to deformation and falling off after long-term use.

[0003] The prior art can realize the opening and closing of the door through the door shaft, but the installation and disassembly of the existing door shaft and door are relatively troublesome, and it is inconvenient to replace the door shaft after it is damaged. In addition, since the door shaft is fixed, the gap between the upper and lower door gaps and the left and right door gaps cannot be adjusted, which makes installation difficult. Therefore, those skilled in the art provide a safe and adjustable load-bearing door shaft to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a safe and adjustable load-bearing door shaft to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A safe and adjustable load-bearing door shaft comprises an upper door frame, a right door frame, a left door frame and a load-bearing door body, wherein a load-bearing door body is arranged below the upper door frame, a left door frame is arranged on one side of the load-bearing door body, and a right door frame is arranged on the other side of the load-bearing door body, an upper door shaft is fixedly installed on the upper left end of the load-bearing door body, an axle pin is inserted in the door body upper shaft, an upper door frame shaft sleeve is arranged above the door body upper shaft, wherein the upper end of the axle pin is inserted in the door frame upper shaft sleeve, an upper bearing is fixedly installed on the inner wall of the door frame upper shaft sleeve, wherein the upper bearing sleeve is arranged on the axle pin.

[0007] As a further solution of the utility model: a door body lower shaft is fixedly installed on the lower left end of the load-bearing door body, an upper end of the door body lower shaft is provided with an upper and lower adjustment top screw, and a tapered roller load-bearing bearing is fixedly installed on the inner wall of the lower end of the door body lower shaft.

[0008] As a further solution of the utility model: one side of the lower end of the left doorframe is fixedly connected with a left-opening lower doorframe shaft replica, and the upper end of the left-opening lower doorframe shaft replica is fixedly connected with a lower doorframe shaft, wherein the upper end of the lower doorframe shaft is inserted into the lower door shaft of the door body, and a tapered roller bearing is sleeved on the outer side of the upper end of the lower doorframe shaft.

[0009] As a further solution of the utility model: the back end of the upper doorframe shaft sleeve is fixedly connected with an upper doorframe shaft back plate, and the upper doorframe shaft back plate can be fixed on the upper doorframe and the left doorframe by bolts.

[0010] As a further solution of the utility model: a lock core is detachably installed on the load-bearing door body, and a lead door lock piece is installed on one side of the right doorframe by bolts. The doorframe, the door body and the door shaft are all processed by using 45# steel.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The whole is processed by using 45# steel, far exceeding the load-bearing strength of the market-cast aluminum material, improving the safety performance of the heavy-duty door. The upper shaft notch design facilitates the adjustment of the left and right door seams by the installer. The quick-install shaft pin is more convenient and fast to install, facilitating installation and maintenance. The lower shaft adopts a tapered roller bearing design, which can bear a 2-ton door body, further improving the safety and reliability of the heavy-duty door, and is provided with upper and lower adjusting screws to facilitate the adjustment of the upper and lower door seams. The upper and lower bearings cooperate to reduce the resistance of opening and closing the door, enabling the heavy-duty door body to be easily opened or closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a safe and adjustable load-bearing door shaft.

[0014] Figure 2 It is a structural schematic diagram of the upper bearing and the shaft pin in a safe and adjustable load-bearing door shaft.

[0015] Figure 3 It is a structural schematic diagram of the upper and lower adjusting screws and the tapered roller bearing in a safe and adjustable load-bearing door shaft.

[0016] Figure 4 It is a structural schematic diagram of the left doorframe and the right doorframe in a safe and adjustable load-bearing door shaft.

[0017] Figure 5 It is a structural schematic diagram of the upper doorframe shaft sleeve and the upper door shaft of the door body in a safe and adjustable load-bearing door shaft.

[0018] In the figure: 1. Upper door frame; 2. Right door frame; 3. Left door frame; 4. Lock core; 5. Lead door lock piece; 6. Upper shaft back plate of door frame; 7. Upper shaft sleeve of door frame; 8. Upper bearing; 9. Axle pin; 10. Upper shaft of door body; 11. Upper and lower adjusting jackscrew; 12. Lower shaft of door body; 13. Tapered roller bearing for load bearing; 14. Lower shaft of door frame; 15. Load-bearing door body; 16. Left-opening duplicate of lower shaft of door frame. Specific implementation mode

[0019] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation modes.

[0020] Please refer to Figures 1 to 5 , in an embodiment of the present utility model, a safety adjustable load-bearing door shaft includes an upper door frame 1, a right door frame 2, a left door frame 3 and a load-bearing door body 15. The load-bearing door body 15 is arranged below the upper door frame 1. A left door frame 3 is arranged on one side of the load-bearing door body 15, and a right door frame 2 is arranged on the other side of the load-bearing door body 15. A door body upper shaft 10 is fixedly installed at the upper left end of the load-bearing door body 15. An axle pin 9 is inserted into the door body upper shaft 10. An upper shaft sleeve 7 of the door frame is arranged above the door body upper shaft 10. The upper end of the axle pin 9 is inserted into the upper shaft sleeve 7 of the door frame. An upper bearing 8 is fixedly installed on the inner wall of the upper shaft sleeve 7 of the door frame. The upper bearing 8 is sleeved on the axle pin 9. A door body lower shaft 12 is fixedly installed at the lower left end of the load-bearing door body 15. An upper and lower adjusting jackscrew 11 is arranged at the upper end of the door body lower shaft 12. A tapered roller bearing for load bearing 13 is fixedly installed on the inner wall at the lower end of the door body lower shaft 12. One side at the lower end of the left door frame 3 is fixedly connected with a left-opening duplicate 16 of the lower shaft of the door frame. The upper end of the left-opening duplicate 16 of the lower shaft of the door frame is fixedly connected with a lower shaft 14 of the door frame. The upper end of the lower shaft 14 of the door frame is inserted into the door body lower shaft 12, and the tapered roller bearing for load bearing 13 is sleeved on the outer side of the upper end of the lower shaft 14 of the door frame. The rear end of the upper shaft sleeve 7 of the door frame is fixedly connected with an upper shaft back plate 6 of the door frame. The upper shaft back plate 6 of the door frame can be fixed on the upper door frame 1 and the left door frame 3 through bolts. A lock core 4 is detachably installed on the load-bearing door body 15. A lead door lock piece 5 is installed on one side of the right door frame 2 through bolts. The door frame, the door body and the door shaft are all processed by using 45# steel.

[0021] The working principle of the present utility model is as follows: The whole is processed by using 45# steel, far exceeding the load-bearing strength of the market cast aluminum material. The upper shaft sleeve 7 of the door frame, the upper shaft 10 of the door body, the upper bearing 8 and the axle pin 9 are combined to form the upper shaft of the load-bearing door. The upper shaft notch design facilitates the adjustment of the left and right door seams by the installation personnel. The upper shaft back plate 6 of the door frame can be easily detached from the upper door frame 1 and the left door frame 3, thus facilitating the disassembly and replacement of the axle pin 9. The lower shaft adopts a tapered roller bearing design, which can bear a 2-ton door body, further improving the safety and reliability of the heavy door. And an upper and lower adjusting jackscrew 11 is provided to facilitate the adjustment of the upper and lower door seams. The cooperation of the upper and lower bearings enables the heavy door body to be easily opened or closed.

[0022] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A safe and adjustable load-bearing door shaft, comprising an upper door frame (1), a right door frame (2), a left door frame (3) and a load-bearing door body (15), characterized in that: A load-bearing door body (15) is arranged below the upper door frame (1), a left door frame (3) is arranged on one side of the load-bearing door body (15), and a right door frame (2) is arranged on the other side of the load-bearing door body (15), a door body upper shaft (10) is fixedly installed on the left upper end of the load-bearing door body (15), an shaft pin (9) is inserted into the door body upper shaft (10), and a door frame upper shaft sleeve (7) is arranged above the door body upper shaft (10), wherein the upper end of the shaft pin (9) is inserted into the door frame upper shaft sleeve (7), and the inner wall of the door frame upper shaft sleeve (7) is fixedly mounted on the door body upper shaft sleeve (7). An upper bearing (8) is fixedly installed, wherein the upper bearing (8) is sleeved on the shaft pin (9); a door body lower shaft (12) is fixedly installed on the left lower end of the load-bearing door body (15); an upper end of the door body lower shaft (12) is provided with an upper and lower adjustment screw (11); a tapered roller load-bearing bearing (13) is fixedly installed on the inner wall of the lower end of the door body lower shaft (12); a door frame lower shaft replica left opening (16) is fixedly connected to one side of the lower end of the left door frame (3); and a door frame lower shaft (14) is fixedly connected to the upper end of the door frame lower shaft replica left opening (16).

2. A safe and adjustable load-bearing door shaft according to claim 1, characterized in that: The rear end of the door frame upper shaft sleeve (7) is fixedly connected to the door frame upper shaft back plate (6).

3. A safe and adjustable load-bearing door shaft according to claim 1, characterized in that: A lock core (4) is detachably mounted on the load-bearing door body (15).

4. A safe and adjustable load-bearing door shaft according to claim 1, characterized in that: A lead door lock plate (5) is bolted on one side of the right door frame (2).

5. The safe and adjustable load-bearing door shaft according to claim 1, characterized in that: The upper end of the door frame lower shaft (14) is inserted into the door body lower shaft (12), and the tapered roller load-bearing bearing (13) is sleeved on the outer side of the upper end of the door frame lower shaft (14).

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