Adjustable hinge of subway safety door

Abstract

The utility model discloses an adjustable hinge of a subway safety door, which comprises a connecting shaft, a first rotating shaft and a second rotating shaft are sleeved outside the connecting shaft, the first rotating shaft and the second rotating shaft are respectively provided with a connecting assembly, and each connecting assembly comprises a plurality of limiting rods fixedly connected with the outer wall of one side of the first rotating shaft. The multiple limiting rods are slidably sleeved with connecting blades, a lead screw is rotationally connected to the middle of the outer wall of one side of the first rotating shaft, the lead screw is in threaded connection in the connecting blades, a plurality of bolts are in threaded connection with the outer wall of one end of the first rotating shaft, and the bolts can make contact with the multiple limiting rods correspondingly. According to the hinge, the connecting assembly is arranged, the position of the connecting blade can be adjusted when the punching position deviates, and therefore the procedure of punching again is omitted, installation is convenient, and the adaptability of the hinge can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hinges, in particular to an adjustable hinge for subway safety doors. Background Technique

[0002] Subway safety doors are an important integral part of modern subway platforms. They play a role in isolating the subway platform and the running track and guiding passengers to board the train in an orderly manner. Hinges are necessary parts for installing some safety doors.

[0003] After retrieval, a utility model with the Chinese patent publication number CN218844102U discloses a subway safety door, including a frame. A through groove is opened on one side of the frame. A first sliding groove is opened in the through groove. Two safety doors are slidably sleeved in the first sliding groove. Safety mechanisms are arranged on one side of each safety door. A second sliding groove is opened at the upper end of the first sliding groove. Two sliders are slidably arranged in the second sliding groove. The sliders are fixedly connected to the safety doors.

[0004] When installing the above safety door, when the hinge is installed on the door body and the door frame, if there is a deviation in the opening position, the connecting blade may not be installed. At this time, it is necessary to re-open the hole, which is more difficult to operate and there is room for improvement. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an adjustable hinge for subway safety doors to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An adjustable hinge for subway safety doors includes a connecting shaft. A first rotating shaft and a second rotating shaft are sleeved outside the connecting shaft. Connecting components are installed on both the first rotating shaft and the second rotating shaft. The connecting component includes a plurality of limiting rods fixedly connected to the outer wall on one side of the first rotating shaft. A connecting blade is slidably sleeved outside the plurality of limiting rods. A lead screw is rotatably connected to the middle of the outer wall on one side of the first rotating shaft. The lead screw is threadedly connected to the connecting blade. A plurality of bolts are threadedly connected to the outer wall at one end of the first rotating shaft. The plurality of bolts can respectively contact the plurality of limiting rods.

[0007] As a further preferred solution of this technical solution, a driving rod is slidably inserted into the lead screw, and the driving rod is rectangular.

[0008] When the punching position is offset, the position of the connecting blade can be adjusted, thus eliminating the need for re-punching, facilitating installation, and increasing the adaptability of the hinge. The driving rod drives the lead screw to rotate on one side of the rotating shaft. Since the connecting blade is restricted by multiple limiting rods, it can only translate along them. Then, the lead screw can drive the connecting blade to move outwards until the through hole of the connecting blade corresponds to the punching position. Finally, rotate the bolt so that it contacts the outer wall of the limiting rod to further increase the stability of the connecting blade.

[0009] As a further preference of this technical solution, a limiting sleeve is threadedly connected to the bottom of the connecting shaft, and the diameter of the limiting sleeve is larger than that of the connecting shaft.

[0010] As a further preference of this technical solution, a lubrication component is installed at the top of the connecting shaft. The lubrication component includes a bellows fixedly installed on the outer wall of the top of the connecting shaft. Through holes are provided on both the top and bottom outer walls of the bellows. A sponge column is placed inside the bellows. An inlet is provided outside the through hole at the top of the bellows, and a one-way valve is provided inside the inlet.

[0011] As a further preference of this technical solution, a vertical groove is provided inside the connecting shaft, and the vertical groove communicates with the through hole at the bottom of the bellows. A plurality of liquid outlets are provided on the outer circumference of the connecting shaft, and the liquid outlets communicate with the vertical groove.

[0012] Press the top of the bellows to make it contract and shorten. Due to the presence of the one-way valve, the lubricating oil inside it cannot overflow outwards and can only be injected from the outside inwards. The lubricating oil that overflows from the sponge column to the outside flows into the through hole of the connecting shaft from the bottom and then flows to the outside from the plurality of liquid outlets, thus ensuring that the rotation of the connecting blade is smoother. When not in use, the lubricating oil will not drip down due to the suction of the sponge column.

[0013] As a further preference of this technical solution, the positions of the plurality of liquid outlets correspond one by one to the intersection positions of the first rotating shaft and the second rotating shaft.

[0014] As a further preference of this technical solution, the lead angles of the two lead screws are smaller than the equivalent friction angle.

[0015] The utility model provides an adjustable hinge for a subway safety door, which has the following beneficial effects:

[0016] (1) By providing a connection component, the utility model can adjust the position of the connection blade when the punching position is offset, thus eliminating the process of punching again, facilitating installation, and being beneficial to increasing the adaptability of the hinge. The driving rod drives the lead screw to rotate on one side of the rotating shaft. Since the connection blade is restricted by multiple limiting rods, it can only translate along them. Furthermore, the lead screw can drive the connection blade to move outwards until the through hole of the connection blade corresponds to the punching position. Finally, rotate the bolt so that it contacts the outer wall of the limiting rod, which can further increase the stability of the connection blade.

[0017] (2) By providing a lubrication component, press the top of the corrugated pipe to make it shrink and become shorter. Due to the presence of the one-way valve, the lubricating oil inside it cannot overflow outwards and can only be injected inwards from the outside. The lubricating oil that overflows from the sponge column to the outside flows into the through hole of the connecting shaft from the bottom and then flows to the outside from multiple liquid outlets, thereby ensuring smoother rotation of the connection blade. When not in use, the lubricating oil will not drip down due to the suction of the sponge column. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the whole of the utility model from the first perspective;

[0019] Figure 2 is a schematic structural diagram of the whole of the utility model from the second perspective;

[0020] Figure 3 is of the utility model Figure 1 amplified structural diagram at A in;

[0021] Figure 4 is of the utility model Figure 2 amplified structural diagram at B in;

[0022] In the figure: 1, connecting shaft; 2, limiting sleeve; 3, rotating shaft one; 4, rotating shaft two; 5, connection component; 6, lubrication component; 501, limiting rod; 502, connection blade; 503, lead screw; 504, bolt; 505, driving rod; 601, corrugated pipe; 602, sponge column; 603, inlet; 604, one-way valve; 605, liquid outlet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the utility model.

[0024] The utility model provides technical solutions: as Figure 1 , Figure 2 and Figure 3As shown in the figure, in this embodiment, an adjustable hinge for a subway safety door includes a connecting shaft 1, characterized in that: a rotating shaft 3 and a rotating shaft 4 are sleeved outside the connecting shaft 1, and connecting components 5 are installed on both the rotating shaft 3 and the rotating shaft 4. The connecting component 5 includes a plurality of limiting rods 501 fixedly connected to the outer wall on one side of the rotating shaft 3. A connecting blade 502 is slidably sleeved outside the plurality of limiting rods 501. A lead screw 503 is rotatably connected to the middle of the outer wall on one side of the rotating shaft 3. The lead screw 503 is threadedly connected to the connecting blade 502. A plurality of bolts 504 are threadedly connected to the outer wall of one end of the rotating shaft 3, and the plurality of bolts 504 can respectively contact the plurality of limiting rods 501.

[0025] A driving rod 505 is slidably inserted into the lead screw 503, and the driving rod 505 is rectangularly arranged. Since it is rectangular as a whole and can slide, it can ensure the smooth adjustment of the position of the connecting blade 502.

[0026] The driving rod 505 drives the lead screw 503 to rotate on one side of the rotating shaft 3. Because the connecting blade 502 is restricted by the plurality of limiting rods 501, it can only translate along them. Thus, the lead screw 503 can drive the connecting blade 502 to move outward until the through hole of the connecting blade 502 corresponds to the punching position. Finally, rotate the bolt 504 so that it contacts the outer wall of the limiting rod 501, which can further increase the stability of the connecting blade 502.

[0027] As Figure 1 and Figure 2 shown, a limiting sleeve 2 is threadedly connected to the bottom of the connecting shaft 1. The diameter of the limiting sleeve 2 is larger than the diameter of the connecting shaft 1, which can prevent the position of the connecting shaft 1 from disengaging from the rotating shaft 3 and the rotating shaft 4.

[0028] As Figure 2 and Figure 4 shown, a lubricating component 6 is installed on the top of the connecting shaft 1. The lubricating component 6 includes a bellows 601 fixedly installed on the outer wall of the top of the connecting shaft 1. Through holes are provided on both the top and bottom outer walls of the bellows 601. A sponge column 602 is placed inside the bellows 601. An inlet 603 is provided outside the through hole at the top of the bellows 601, and a one-way valve 604 is provided inside the inlet 603.

[0029] A vertical groove is provided inside the connecting shaft 1, and the vertical groove is communicated with the through hole at the bottom of the bellows 601. A plurality of liquid outlets 605 are provided on the outer circumference of the connecting shaft 1, and the liquid outlets 605 are communicated with the vertical groove.

[0030] As Figure 2 shown, the positions of the plurality of liquid outlets 605 correspond one by one to the intersection positions of the rotating shaft 3 and the rotating shaft 4, so that the lubricating effect of the lubricating oil is more obvious.

[0031] Press the top of the corrugated pipe 601 to make it contract and shorten. Due to the existence of the one-way valve 604, the lubricating oil inside it cannot overflow outward and can only be injected from the outside. The lubricating oil that overflows from the sponge column to the outside flows into the through hole of the connecting shaft 1 from the bottom and then flows to the outside from the plurality of liquid outlets 605, so as to ensure that the rotation of the connecting blade 502 is smoother. When not in use, the lubricating oil will not drip downward due to the suction of the sponge column 602.

[0032] As Figure 1 and Figure 2 shown, the lead angles of the threads of the two lead screws 503 are smaller than the equivalent friction angle, so that the two have a self-locking property.

[0033] The present utility model provides an adjustable hinge for a subway safety door, and the specific working principle is as follows:

[0034] When the device works, if the punching position is offset, only need to rotate the driving rod 505. Since it is integrally rectangular and can slide, it can ensure the smooth adjustment of the position of the connecting blade 502. The driving rod 505 drives the lead screw 503 to rotate on one side of the rotating shaft 3. Because the connecting blade 502 is restricted by a plurality of limiting rods 501, it can only translate along them. Further, the lead screw 503 can drive the connecting blade 502 to move outward until the through hole of the connecting blade 502 corresponds to the punching position. Finally, rotate the bolt 504 to make it contact with the outer wall of the limiting rod 501, which can further increase the stability of the connecting blade 502. As the use time increases, just press the top of the corrugated pipe 601 to make it contract and shorten. Due to the existence of the one-way valve 604, the lubricating oil inside it cannot overflow outward and can only be injected from the outside. The lubricating oil that overflows from the sponge column to the outside flows into the through hole of the connecting shaft 1 from the bottom and then flows to the outside from the plurality of liquid outlets 605, so as to ensure that the rotation of the connecting blade 502 is smoother. When not in use, the lubricating oil will not drip downward due to the suction of the sponge column 602.

[0035] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable hinge for a subway safety door, comprising a connecting shaft (1), characterized in that: The connecting shaft (1) is sleeved with a rotating shaft 1 (3) and a rotating shaft 2 (4) on the outside. The rotating shaft 1 (3) and the rotating shaft 2 (4) are both installed with a connecting assembly (5). The connecting assembly (5) comprises a plurality of limit rods (501) fixedly connected to the outer wall of one side of the rotating shaft 1 (3). The plurality of limit rods (501) are sleeved with connecting blades (502) on the outside of the sliding sleeves. A screw rod (503) is rotatably connected to the middle of the outer wall of one side of the rotating shaft 1 (3). The screw rod (503) is threadedly connected to the connecting blade (502). A plurality of bolts (504) are threadedly connected to the outer wall of one end of the rotating shaft 1 (3). The plurality of bolts (504) can respectively contact the plurality of limit rods (501).

2. The adjustable hinge for subway safety door according to claim 1, characterized in that: A driving rod (505) is slidably inserted inside the screw rod (503), and the driving rod (505) is arranged in a rectangular shape.

3. The adjustable hinge for subway safety door according to claim 1, characterized in that: The bottom of the connecting shaft (1) is threadedly connected to a limiting sleeve (2), and the diameter of the limiting sleeve (2) is greater than the diameter of the connecting shaft (1).

4. The adjustable hinge for subway safety door according to claim 1, characterized in that: A lubrication assembly (6) is installed at the top of the connecting shaft (1), and the lubrication assembly (6) comprises a bellows (601) fixedly installed on the outer wall of the top of the connecting shaft (1), the top and bottom outer walls of the bellows (601) are both provided with through holes, a sponge column (602) is placed inside the bellows (601), an inlet (603) is provided outside the through hole at the top of the bellows (601), and a one-way valve (604) is provided inside the inlet (603).

5. The adjustable hinge for subway safety door according to claim 4, characterized in that: The connecting shaft (1) is provided with a vertical groove inside, and the vertical groove is connected to the through hole at the bottom of the bellows (601). The connecting shaft (1) is provided with a plurality of liquid outlets (605) on the circumference, and the liquid outlets (605) are connected to the vertical groove.

6. The adjustable hinge for subway safety door according to claim 5, characterized in that: The positions of the plurality of liquid outlets (605) correspond one-to-one to the intersection positions of the rotating shaft 1 (3) and the rotating shaft 2 (4).

7. The adjustable hinge for subway safety door according to claim 1, characterized in that: The thread lead angles of the two screw rods (503) are smaller than the equivalent friction angle.

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