Air-tight door special for aluminum alloy granary

Abstract

The utility model discloses an air-tight door special for an aluminum alloy granary. The air-tight door special for the aluminum alloy granary comprises a door frame, hinges, a door leaf, a sealing strip, a crank and a locking device. The door frame is fixed in a door opening of the granary, the door leaf comprises an aluminum alloy frame and a heat preservation and insulation plate arranged in the aluminum alloy frame, the door frame is connected with the door leaf through hinges, and a sealing strip is arranged between the door frame and the door leaf. The locking device comprises a conical bevel gear transmission locking mechanism, a transmission connecting rod, a plug pin, an anti-rotation support and an insertion hole, the insertion hole is formed in the door frame, a crank is sequentially connected with the conical bevel gear transmission locking mechanism, the transmission connecting rod and the plug pin, and the plug pin is inserted into the insertion hole in a matched mode. The air-tight door special for the aluminum alloy granary is good in air-tight heat preservation performance, high in compressive strength, light in weight, low in manufacturing cost, flexible and light in operation and attractive in appearance, and is an ideal product for transformation and updating of modern tall and large horizontal warehouses and old warehouses.

Description

Technical Field

[0001] The utility model belongs to the technical field of grain storage and heat preservation engineering, and specifically relates to a special closed door for aluminum alloy grain silo. Background Art

[0002] Reserve grain is not only a backup for stabilizing grain prices and preparing for famine, but also a life-saving grain for the people of the country during critical periods. In recent years, facing the challenges of frequent fluctuations in the international grain and oil market, China Grain Reserves Corporation has played the role of a major force in service regulation and control. Through reserve throughput regulation, it has ensured the smooth operation of China's staple grain market and promoted the stability of the overall macroeconomic situation.

[0003] Grain storage warehouses are used to store and preserve grain. The construction of grain storage warehouses is very important to ensure the safety of grain storage. Among them, the construction of the warehouse door of the grain storage warehouse is particularly important for the moisture-proof and heat-insulating work of grain.

[0004] At present, the insulated and sealed doors used in the majority of domestic grain storage warehouses are mostly made of galvanized materials (the door frame is made of galvanized square tube materials, and the door leaf frame is made of galvanized channel steel), which cannot meet the long-term airtight insulation performance of the warehouse; and the material is prone to rust, wear and corrosion after long-term use, which affects the appearance; and its locking device is a container galvanized pull rod lock, which is relatively cumbersome to operate and not very flexible to open and close.

[0005] At present, there is another product on the market for insulated and sealed doors in grain storage warehouses, namely, stainless steel grain silo-specific sealed doors. The door frame and door leaf frame of this product are all made of stainless steel 304 profiles. It also has the disadvantage of being heavy in overall weight and difficult to install. In addition, this product also has the disadvantage of being expensive. Summary of the invention

[0006] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide a special closed door for aluminum alloy granaries, which solves the problems of complex opening in the prior art, the problem of rust and corrosion affecting the appearance after long-term use, the problem of poor sealing performance, and the high cost. It is an essential product in the existing grain storage industry.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] A special closed door for aluminum alloy granary, including a door frame, hinges, door leaves, sealing strips, a crank and a locking device; the door frame is fixed in the door opening of the granary, the door leaves include an aluminum alloy frame and a thermal insulation board arranged in the aluminum alloy frame, the door frame is connected to the door leaves through hinges, and a sealing strip is arranged between the door frame and the door leaves; the locking device includes a conical bevel gear transmission locking mechanism, a transmission connecting rod, a latch, an anti-rotation bracket and a socket, the socket is arranged on the door frame, the crank is connected to the conical bevel gear transmission locking mechanism, the transmission connecting rod, and the latch in sequence, and the latch is matched and inserted into the socket.

[0009] Furthermore, the conical bevel gear transmission locking mechanism includes conical main bevel gears, upper passive bevel gears and lower passive bevel gears. The conical main bevel gears are externally connected to the core shaft of the crank handle, and the conical main bevel gears are internally connected to the upper passive bevel gears and the lower passive bevel gears respectively. The upper passive bevel gears and the lower passive bevel gears are respectively connected to their own transmission connecting rods. A transmission nut is provided at the outer end of the transmission connecting rod, and the end of the transmission nut is provided with the pin. The pin shaft of the pin is telescopically inserted into the socket in the anti-rotation bracket.

[0010] Furthermore, the transmission connecting rod and the transmission nut are positioned and rotated.

[0011] Furthermore, the anti-rotation bracket is provided with an anti-rotation hole for fixing the outer part of the latch.

[0012] Furthermore, the conical bevel gear transmission locking mechanism, transmission connecting rod, latch, and anti-rotation bracket are arranged inside the door leaf; and the crank handle is arranged on the door leaf.

[0013] Furthermore, a plurality of hinges are evenly arranged on both sides of the door frame.

[0014] Furthermore, a first sealing strip is embedded around the outer side of the door leaf, and a second sealing strip is embedded around the inner side of the door leaf.

[0015] Furthermore, the sealing strip is made of EPDM rubber.

[0016] Furthermore, a handle is provided on the door leaf.

[0017] Furthermore, the door frame is formed by bending and welding stainless steel plates.

[0018] The advantages of the utility model are as follows:

[0019] The utility model of the aluminum alloy granary special closed door has the advantages of beautiful appearance, low cost, light weight, easy installation and use, high air tightness and durability. The invention effectively makes up for the shortcomings of the existing technology and is a necessary product in the existing grain storage industry.

[0020] The utility model of the special closed door for aluminum alloy granary not only maintains the beautiful appearance of stainless steel, but also has the advantages of flexible and light opening and low cost. The special closed door for aluminum alloy granary adopts double-channel sealing and has high airtightness; the door leaf hinge is a precision stainless steel casting, and the spacing can be fine-tuned after the hinge is fixed to meet the airtight requirements of the door leaf. The opening device is a conical bevel gear transmission locking mechanism, which is built into the door leaf and does not affect the overall appearance. The external opening device is a stainless steel hand wheel (crank handle). When opening and closing, you only need to rotate the hand wheel to control the locking of the door leaf. It is flexible and convenient to open, has good airtight insulation performance and high strength. It is an ideal product for the insulated and closed door of modern grain warehouses. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of the utility model special closed door for aluminum alloy granary.

[0022] Figure 2 It is a side sectional view of the utility model of a special closed door for an aluminum alloy granary.

[0023] Figure 3 It is a top sectional view of the utility model of a special closed door for an aluminum alloy granary.

[0024] Figure 4 It is a schematic diagram of the conical bevel gear transmission locking mechanism.

[0025] Figure 5 It is a cross-sectional view of the conical bevel gear transmission locking mechanism.

[0026] Figure 6 This is the operating principle diagram of the conical bevel gear transmission locking mechanism.

[0027] Figure 7 This is a bottom view of the anti-rotation bracket.

[0028] Figure 8 It is a side view of the anti-rotation bracket.

[0029] Fig. 9 It is a schematic diagram of the latch.

[0030] Fig.10 Schematic diagram of the latch in the anti-rotation bracket.

[0031] Among them, 1-bent door frame; 2-stainless steel hinge; 3-first sealing strip; 4-second sealing strip; 5-locking mechanism crank handle, 51-crank handle core shaft; 6-conical bevel gear transmission locking mechanism, 61-conical main bevel gear, 62-upper passive bevel gear, 63-lower passive bevel gear; 7-thermal insulation board, 8-handle, 9-door leaf, 10-transmission connecting rod, 101-transmission nut; 11-latch, 111-latch shaft; 12-anti-rotation bracket, 121-anti-rotation hole; 13-aluminum alloy profile frame. Implementation

[0032] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0033] like Figure 1 As shown, the aluminum alloy granary-specific closed door of this embodiment includes a bent door frame 1, a stainless steel hinge 2, a door leaf 9, a sealing strip, a crank 5 and a locking device.

[0034] The bent door frame 1 is formed by bending and welding stainless steel plates, and is welded and fixed to the embedded parts of the closed door, specifically to the walls around the door opening.

[0035] Hinge seats are fixed on both sides of the bending door frame 1, and two door leaves 9 are fixed by stainless steel hinges 2 on the hinge seats. The stainless steel hinges 2 can be adjusted so that the sealing strips of the door leaves 9 are completely close to the bending door frame 1.

[0036] Preferably, three hinge seats are evenly arranged at the upper, middle and lower sides of the bending door frame 1, and the hinges fix the two door leaves 9 so that the door leaves 9 do not sag after installation.

[0037] The door leaf 9 comprises an aluminum alloy profile frame 13 and a thermal insulation board 7 . The frame of the door leaf 9 (the aluminum alloy profile frame 13 ) is edged with an aluminum alloy profile, and the thermal insulation board 7 is arranged inside the aluminum alloy profile frame 13 .

[0038] Regarding the sealing strip, a first sealing strip 3 is embedded around the outer side of the door leaf 9, and a second sealing strip 4 is embedded around the inner side of the door leaf 9 to ensure the airtightness of the closed door.

[0039] Preferably, the material of the first sealing strip 3 and the second sealing strip 4 is EPDM rubber.

[0040] The door leaf 9 is provided with a handle 8, and the handle 8 is made of stainless steel.

[0041] The door leaf 9 is also provided with a crank 5, which is connected to the locking device to open or close the door leaf 9. A crank spindle 51 is provided inside the crank 5.

[0042] The locking device comprises a conical bevel gear transmission locking mechanism 6, a transmission connecting rod 10, a latch pin 11, and an anti-rotation bracket.

[0043] Among them, the conical bevel transmission locking mechanism 6, the transmission connecting rod 10, the latch 11 and the anti-rotation bracket 12 are arranged inside the door leaf 9. A socket matching the latch 11 is correspondingly arranged in the bending door frame 1.

[0044] The crank 5 is connected to the conical bevel gear transmission locking mechanism 6 in the door leaf 9 through the crank core shaft 51. The conical bevel gear transmission locking mechanism 6 includes a conical main bevel gear 61, an upper passive bevel gear 62, and a lower passive bevel gear 63. The conical main bevel gear 61 is connected to the crank core shaft 51 outwardly, and the conical main bevel gear 61 is respectively connected to the upper passive bevel gear 62 and the lower passive bevel gear 63 inwardly. The upper passive bevel gear 62 is connected to the upper transmission connecting rod 10, and the lower passive bevel gear 63 is connected to the lower transmission connecting rod 10. The outer end of the transmission connecting rod 10 is provided with a transmission nut 101, and the end of the transmission nut 101 is provided with a pin 11. The pin 11 can be extended and retracted up and down in the anti-rotation bracket 12, and the pin shaft 111 of the pin 11 can be inserted into the socket of the bent door frame 1 when it is extended.

[0045] The installation and use process of the aluminum alloy granary special closed door of this embodiment is as follows:

[0046] During installation, firstly weld the formed stainless steel bending door frame 1 to the embedded parts of the closed door to make it firm and flat; fix three stainless steel hinges 2 on the two side columns of the bending door frame respectively, the hinges are fixed to the two door leaves 9, the first sealing strip 3 is embedded around the outer side of the door leaf 9, and the second sealing strip 4 is embedded around the inner side of the door leaf 9. Turn the crank 5, through the crank spindle 51, the conical main bevel gear 61 of the conical bevel gear transmission locking mechanism 6 drives the upper passive bevel gear 62 and the lower passive bevel gear 63 to rotate in the opposite direction at the same time; the upper and lower transmission connecting rods 10 are linked to position and rotate, and the upper and lower transmission nuts 101 are driven to position and rotate at the same time; the upper and lower latches 11 are extended and retracted up and down in the anti-rotation holes 121 of the anti-rotation bracket 12 to complete the opening or closing of the door.

[0047] The aluminum alloy granary-specific airtight door of this embodiment has good sealing and heat preservation performance, high strength, easy operation, and beautiful appearance. It is an important and indispensable infrastructure in the construction of modern grain depots.

[0048] The aluminum alloy granary special airtight door of this embodiment is the first choice for modern new tall bungalows and old warehouse reconstruction. The bending door frame 1 is made of stainless steel 304 material and is directly fixed on the walls around the door opening. Three sets of precision stainless steel hinges 2 are installed on both sides of the aluminum alloy profile frame 13 to ensure that the insulation door leaf 9 does not sag when it is installed. The edge of the door leaf 9 is made of aluminum alloy profile. A conical bevel gear transmission locking mechanism 6 is built in the middle of each door, and the upper and lower conical locks (bolts 11) are rotated into the fixing holes (jacks) through the upper and lower transmission connecting rods 10. The stainless steel hand wheel (crank 5) is rotated clockwise to lock, and the two EPDM sealing strips on the stainless steel door leaf 9 are pressed on the bending door frame 1, fully close to ensure its airtightness. After the custodian closes the warehouse door tightly, the crank 5 can be directly pulled out. It is convenient for the warehouse custodian to keep it, and prevents other personnel from opening it without authorization. The product has beautiful appearance, high airtight heat preservation performance, high mechanical strength, fine workmanship, and is light and convenient to operate.

[0049] The above description is only a preferred embodiment of the present invention and does not constitute a limitation on the protection scope of the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Aluminum alloy granary special closed door, characterized by: The aluminum alloy granary special closed door includes a door frame, hinges, door leaves, sealing strips, a crank and a locking device; the door frame is fixed in the door opening of the granary, the door leaves include an aluminum alloy frame and a thermal insulation board arranged in the aluminum alloy frame, the door frame is connected to the door leaves through hinges, and a sealing strip is arranged between the door frame and the door leaves; the locking device includes a conical bevel gear transmission locking mechanism, a transmission connecting rod, a latch, an anti-rotation bracket and a socket, the socket is arranged on the door frame, the crank is connected to the conical bevel gear transmission locking mechanism, the transmission connecting rod, and the latch in sequence, and the latch is matched and inserted into the socket.

2. The aluminum alloy granary-specific airtight door according to claim 1, characterized in that: The conical bevel gear transmission locking mechanism includes conical main bevel gears, upper passive bevel gears and lower passive bevel gears. The conical main bevel gears are externally connected to the core shaft of the crank handle, and the conical main bevel gears are internally connected to the upper passive bevel gears and the lower passive bevel gears respectively. The upper passive bevel gears and the lower passive bevel gears are respectively connected to their own transmission connecting rods. A transmission nut is provided at the outer end of the transmission connecting rod, and the end of the transmission nut is provided with the pin. The pin shaft of the pin is telescopically inserted into the socket in the anti-rotation bracket.

3. The aluminum alloy granary-specific airtight door as claimed in claim 2, characterized in that: The transmission connecting rod and the transmission nut are positioned and rotated.

4. The aluminum alloy granary-specific airtight door as claimed in claim 2, characterized in that: The anti-rotation bracket is provided with an anti-rotation hole for fixing the outer portion of the latch.

5. The aluminum alloy granary-specific airtight door according to any one of claims 1 to 4, characterized in that: The conical bevel gear transmission locking mechanism, the transmission connecting rod, the latch pin and the anti-rotation bracket are arranged inside the door leaf; and the crank handle is arranged on the door leaf.

6. The aluminum alloy granary-specific airtight door according to any one of claims 1 to 4, characterized in that: A plurality of hinges are evenly arranged on both sides of the door frame.

7. The aluminum alloy granary-specific airtight door according to any one of claims 1 to 4, characterized in that: The first sealing strip is embedded around the outer side of the door leaf, and the second sealing strip is embedded around the inner side of the door leaf.

8. The aluminum alloy granary-specific airtight door as claimed in claim 7, characterized in that: The material of the sealing strip is EPDM rubber.

9. The aluminum alloy granary-specific airtight door according to any one of claims 1 to 4, characterized in that: A handle is provided on the door leaf.

10. The aluminum alloy granary-specific airtight door according to any one of claims 1 to 4, characterized in that: The door frame is formed by bending and welding stainless steel plates.

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