Overturning plate door with external shaft

Abstract

The utility model discloses a flap door with an external shaft, and belongs to the technical field of flap doors. The device comprises a cylinder, a door plate body, a driving shaft end, a driven shaft end, a bearing seat, a crank arm, a first sleeve, a second sleeve, a check ring, an air cylinder, a fisheye connector, a first dustproof sealing ring, a first gasket, a second gasket, a second dustproof sealing ring, a first knuckle bearing, a buckle plate, a second knuckle bearing, a baffle, a double-lug fixing seat and a fixing seat welded to a box body. In the utility model, the two shaft ends of the driving shaft end and the driven shaft end and the door plate body are of a split structure, the size of the door plate body is the size of a blocking space, and the driving shaft end and the driven shaft end are inserted and assembled from the outside of the structure, so that not only is the redundant installation space saved, but also the problems of internal inclined installation and the like are avoided; the turning plate door section rotating shaft and the door plate body are of an integrated welding structure, the rotating surface is smooth, redundant connecting pieces do not exist, the risk that internal scattered connecting pieces fall off is avoided, and the contact tightness of the rotating shaft and a sealing strip is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flap doors, in particular to an externally mounted shaft flap door. Background Art

[0002] Common existing flap doors are usually installed or welded with a through-axis and a door panel. Since the length of the shaft head greatly exceeds the size of the door panel, a larger installation space and shaft hole size are required, which not only increases the structure and hole size and reduces assembly accuracy, but also affects the movement accuracy and sealing effect. Utility Model Content

[0003] The purpose of the utility model is to provide an externally mounted shaft flap door to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an external shaft flap door, comprising a cylinder, a door panel, a driving shaft end, a driven shaft end, a bearing seat, a crank arm, a first sleeve, a second sleeve, a retaining ring, a cylinder, a fisheye joint, a first dustproof seal, a first gasket, a second gasket, a second dustproof seal, a first joint bearing, a gusset plate, a second joint bearing, a baffle, a double-ear fixed seat and a fixed seat welded to the box body, characterized in that the two fixed seats are symmetrically fixed on both sides of the cylinder body, the first sleeve is installed and sleeved on the driving shaft end, the second sleeve is installed and sleeved on the driven shaft end, the first sleeve and the second sleeve respectively pass through two fixed The fixed seat is inserted into the two ends of the door plate body, the first dustproof sealing ring and the first gasket are pressed onto the active shaft end in the fixed seat, the second gasket and the second dustproof sealing ring are pressed onto the driven shaft end in the fixed seat, the two bearing seats are respectively installed on the two fixed seats, the first joint bearing and the buckle plate are installed on the active shaft end in turn, the second joint bearing and the baffle are installed on the driven shaft end in turn, one end of the cylinder is fixedly connected with a double-ear fixed seat, the moving end of the cylinder is fixedly connected to the fisheye joint, the fisheye joint is rotatably connected to the crank arm, the crank arm and the baffle are fixed by a second screw group, and the double-ear fixed seat is installed on the cylinder support of the cylinder body.

[0005] As a further solution of the utility model: wherein, the first joint bearing, the buckle plate and the active shaft end, and the second joint bearing, the baffle plate and the driven shaft end are all fastened and fixed by a first screw group.

[0006] As a further solution of the present invention: wherein, the first sleeve and the second sleeve need to be firmly pressed against the roots of the shoulders of the driving shaft end and the driven shaft end.

[0007] As a further solution of the utility model: wherein, the inner sleeve milling planes of the driving shaft end and the driven shaft end are respectively consistent with and fit with the milling planes at the shaft heads at both ends of the door panel body, and this plane is the circumferential direction rotary drive positioning surface.

[0008] As a further solution of the utility model: wherein, a shaft elastic retaining ring is installed at the rotation connection between the fisheye joint and the crank arm.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The externally mounted axial flap door has a separate structure between the driving shaft end and the driven shaft end and the door panel body. The size of the door panel body is the size of the blocked space, and the driving and driven shaft ends are assembled from the outside of the structure. This structure not only saves excess installation space, but also avoids problems such as internal oblique installation and extended strip holes. In addition, the rotating shaft of the flap door section and the door panel body are an integrally welded structure with a smooth rotating surface and no redundant connecting parts. This not only solves the risk of internal scattered connecting parts falling off, but also improves the tightness of the contact between the rotating shaft and the sealing strip, making the seal more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front view structural schematic diagram of the utility model;

[0012] Figure 2 For the utility model Figure 1 Schematic diagram of the cross-sectional structure at AA.

[0013] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0014] 1. Door panel body; 2. Active shaft end; 3. First sleeve; 4. First dustproof seal; 5. First gasket; 6. Bearing seat; 7. First spherical bearing; 8. Buckle plate; 9. First screw group; 10. Crank arm; 11. Cylinder body; 12. Circlip; 13. Second screw group; 14. Cylinder; 15. Fisheye joint; 16. Elastic circlip for shaft; 17. Double-ear fixing seat; 18. Driven shaft end; 19. Second sleeve; 20. Second gasket; 21. Second dustproof seal; 22. Second spherical bearing; 23. Baffle; 24. Fixing seat. DETAILED DESCRIPTION

[0015] See also Figures 1-2In the present practical embodiment, the external shaft flap door includes a cylinder 11, a door panel body 1, a driving shaft end 2, a driven shaft end 18, a bearing seat 6, a crank arm 10, a first sleeve 3, a second sleeve 19, a retaining ring 12, a cylinder 14, a fisheye joint 15, a first dustproof seal 4, a first gasket 5, a second gasket 20, a second dustproof seal 21, a first joint bearing 7, a gusset plate 8, a second joint bearing 22, a baffle 23, a double-ear fixed seat 17 and a fixed seat 24 welded to the box body, the two fixed seats 24 are symmetrically fixed on both sides of the cylinder 11, the first sleeve 3 is installed and sleeved on the driving shaft end 2, the second sleeve 19 is installed and sleeved on the driven shaft end 18, the first sleeve 3 and the second sleeve 19 respectively pass through the two fixed seats 24 and Insert the two ends of the door plate body 1, the first dustproof seal ring 4 and the first gasket 5 are pressed onto the active shaft end 2 in the fixed seat 24, the second gasket 20 and the second dustproof seal ring 21 are pressed onto the driven shaft end 18 in the fixed seat 24, the two bearing seats 6 are respectively installed on the two fixed seats 24, the first joint bearing 7 and the buckle plate 8 are installed on the active shaft end 2 in sequence, the second joint bearing 22 and the baffle 23 are installed on the driven shaft end 18 in sequence, one end of the cylinder 14 is fixedly connected with a double-ear fixed seat 17, the moving end of the cylinder 14 is fixedly connected with the fisheye joint 15, the fisheye joint 15 is rotatably connected with the crank arm 10, the crank arm 10 is fixed with the baffle ring 12 by the second screw group 13, and the double-ear fixed seat 17 is installed on the cylinder support of the cylinder body 11;

[0016] When installing this device, install the first sleeve 3 on the active shaft end 2, and install the second sleeve 19 on the driven shaft end 18. The sleeve needs to be firmly pressed against the root of the shaft shoulder and protect the surface finish of the sleeve. It is a tight fit here and there should be no stringing. Then install the door panel body 1 from the inside of the cylinder body 11, and insert the active shaft end 2 and the driven shaft end 18 with the first sleeve 3 and the second sleeve 19 installed from the external fixed seat 24 of the cylinder body 11 respectively, and insert them into the two ends of the door panel body 1. Here, the inner milling planes of the active shaft end 2 and the driven shaft end 18 are respectively consistent with the milling planes at the shaft heads at both ends of the door panel body 1 and fit together. This plane is the circumferential direction rotary drive positioning surface, press the first dustproof sealing ring 4 and the first gasket 5 together onto the active shaft end 2 in the fixed seat 24; press the second gasket 20 and the second dustproof sealing ring 21 together onto the driven shaft end 18 in the fixed seat 24, and the sealing ring and gasket are in the position. The bearing seats 6 are respectively installed on the fixing seats 24 at both ends of the cylinder 11. The driving shaft end 2 and the driven shaft end 18 are installed with the first joint bearing 7, the second joint bearing 22, the baffle plate 23, and the buckle plate 8 in the order of the assembly drawing, and are fastened and fixed with the first screw group 9. During this assembly process, attention should be paid to the coaxiality of each seal and bearing to ensure free rotation without jamming. Finally, the driving shaft end 2 is installed with the crank arm 10, the retaining ring 12, the fisheye joint 15, the cylinder 14, the shaft elastic retaining ring 16, the double-ear fixing seat 17 and other flap door driving parts. The installation direction of the crank arm 10 should be correctly installed according to the figure. The double-ear fixing seat 17 is installed to the cylinder support of the cylinder 11 for support and fixation, thus completing the assembly of the entire flap door.

[0017] like Figure 1 As shown: the first joint bearing 7, the buckle plate 8 and the active shaft end 2, the second joint bearing 22, and the baffle plate 23 and the driven shaft end 18 are all fastened and fixed by the first screw group 9, and the connection is firm and detachable.

[0018] like Figure 1 As shown: the first sleeve 3 and the second sleeve 19 need to be firmly pressed against the roots of the shaft shoulders of the driving shaft end 2 and the driven shaft end 18, and the surface finish of the sleeves must be protected. This is a tight fit and there should be no play.

[0019] like Figure 1 As shown: the inner milling planes of the driving shaft end 2 and the driven shaft end 18 are respectively consistent with and in contact with the milling planes at the shaft heads at both ends of the door panel body 1, and this plane is the circumferential direction rotary drive positioning surface.

[0020] like Figure 1 As shown: a shaft elastic retaining ring 16 is installed at the rotation connection between the fisheye joint 15 and the crank arm 10 to improve the sealing performance.

[0021] Working principle: When installing the device, install the first sleeve 3 on the driving shaft end 2, install the second sleeve 19 on the driven shaft end 18, and then install the door panel body 1 from the inside of the cylinder body 11, and insert the driving shaft end 2 and the driven shaft end 18 with the first sleeve 3 and the second sleeve 19 installed from the fixed seat 24 outside the cylinder body 11 respectively, and insert them into the two ends of the door panel body 1, and press the first dustproof seal ring 4 and the first gasket 5 together to the driving shaft end 2 in the fixed seat 24; press the second gasket 20 and the second dustproof seal ring 21 together to the driven shaft end 1 in the fixed seat 24. 8, the bearing seats 6 are respectively installed on the fixing seats 24 at both ends of the cylinder 11, the driving shaft end 2 and the driven shaft end 18 are sequentially installed with the first joint bearing 7, the second joint bearing 22, the baffle 23, and the buckle plate 8 according to the assembly drawing sequence, and are fastened and fixed with the first screw group 9, and finally, the driving shaft end 2 is installed with the crank arm 10, the retaining ring 12, the fisheye joint 15, the cylinder 14, the shaft elastic retaining ring 16, the double-ear fixing seat 17 and other flap door driving parts, and the double-ear fixing seat 17 is installed to the cylinder support of the cylinder 11 for support and fixing, that is, the assembly work of the entire flap door is completed;

[0022] The action process is: when the cylinder 14 extends, the door panel body 1 rotates downward to complete the opening action; when the cylinder 14 retracts, the door panel body 1 rotates upward to the position of the sealing strip around the compression cylinder 11 to complete the closing and blocking action. The entire structure is a standard matching assembly relationship, without large gaps caused by long holes, and without equal gaps and protrusions caused by connecting clips, so that the flap door rotation mechanism is accurately positioned, rotates freely, and is tightly sealed, which significantly improves the flap door's sealing effect on materials.

[0023] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An external shaft flap door, comprising a cylinder (11), a door panel (1), a driving shaft end (2), a driven shaft end (18), a bearing seat (6), a crank arm (10), a first sleeve (3), a second sleeve (19), a retaining ring (12), a cylinder (14), a fisheye joint (15), a first dustproof seal ring (4), a first gasket (5), a second gasket (20), a second dustproof seal ring (21), a first joint bearing (7), a buckle plate (8), a second joint bearing (22), a baffle (23), a double-ear fixing seat (17) and a fixing seat (24) welded to a box body, characterized in that: The two fixing seats (24) are symmetrically fixed on both sides of the cylinder (11), the first sleeve (3) is installed and sleeved on the driving shaft end (2), and the second sleeve (19) is installed and sleeved on the driven shaft end (18). The first sleeve (3) and the second sleeve (19) pass through the two fixing seats (24) and are inserted into the two ends of the door plate (1). The first dustproof sealing ring (4) and the first gasket (5) are pressed onto the driving shaft end (2) in the fixing seat (24), and the second gasket (20) and the second dustproof sealing ring (21) are pressed onto the driven shaft end (18) in the fixing seat (24). The two bearing seats ( 6) are respectively mounted on two fixing seats (24), the first joint bearing (7) and the buckle plate (8) are sequentially mounted on the driving shaft end (2), the second joint bearing (22) and the baffle plate (23) are sequentially mounted on the driven shaft end (18), one end of the cylinder (14) is fixedly connected to a double-ear fixing seat (17), the moving end of the cylinder (14) is fixedly connected to a fisheye joint (15), the fisheye joint (15) is rotatably connected to the crank arm (10), the crank arm (10) is fixed to the retaining ring (12) by a second screw group (13), and the double-ear fixing seat (17) is mounted on the cylinder support of the cylinder body (11).

2. The externally mounted pivot flap door according to claim 1, characterized in that: The first joint bearing (7), the buckle plate (8) and the driving shaft end (2), and the second joint bearing (22), the baffle plate (23) and the driven shaft end (18) are all fastened and fixed by a first screw group (9).

3. The externally mounted pivot flap door according to claim 1, characterized in that: The first sleeve (3) and the second sleeve (19) need to be firmly seated against the roots of the shaft shoulders of the driving shaft end (2) and the driven shaft end (18).

4. The externally mounted pivot flap door according to claim 1, characterized in that: The inner milling planes of the driving shaft end (2) and the driven shaft end (18) are respectively aligned with and in contact with the milling planes at the shaft heads at both ends of the door panel body (1), and the planes are circumferentially rotating driving positioning surfaces.

5. The externally mounted pivot flap door according to claim 1, characterized in that: A shaft elastic retaining ring (16) is installed at the rotation connection between the fisheye joint (15) and the crank arm (10).

Images