Access door

Abstract

The utility model belongs to the technical field of cooling tower equipment, and particularly discloses an access door which comprises an access door body, a spring bolt body, a first bolt, a first nut, a lead screw, a second nut and a first handle. A spring bolt moving hole is formed in the position, close to the middle, of the side edge of the access door body, a gasket matching hole and a handle fixing hole are formed in the spring bolt body, a rotating gasket is sleeved with the gasket matching hole, and first nuts are arranged on the two sides of the gasket matching hole correspondingly. A first bolt penetrates through the spring bolt mounting hole and the rotary gasket and is in threaded connection with a first nut mounting spring bolt body, second nuts are arranged on the two sides of the handle fixing hole, and a lead screw penetrates through the rotary limiting hole and the handle fixing hole and is in threaded connection with the second nuts. The lock tongue body is controlled to move in the lock tongue moving hole, the rotation limiting hole conducts rotation track limiting on the lock tongue body, and therefore opening and closing of the lock tongue body are controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling tower equipment, in particular to an inspection door. Background Art

[0002] As the scale of industrial production continues to expand, the demand for cooling tower equipment is also growing. In production, several cooling towers are often needed to meet the demand. In order to save resources and space, many projects have several cooling towers placed together. Some of the equipment has no access door installed in the middle, and some of the equipment has an industrial lock installed on the access door, which can only be opened from the outside.

[0003] For equipment without maintenance doors, there will still be maintenance openings at the original maintenance door locations for easy maintenance. When multiple devices are connected together, the number of cooling towers that are turned on will be reduced when the load is low in winter. The presence of maintenance openings will cause cross-wind and affect the cooling effect. Traditional handle-type industrial cabinet locks can only be opened on one side, which makes daily maintenance extremely inconvenient when there are a large number of devices connected together. Utility Model Content

[0004] The purpose of the utility model is to provide an inspection door to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inspection door, comprising an inspection door body, a lock tongue body, a first bolt, a first nut, a screw rod, a second nut and a first handle, the inspection door body is provided with a handle mounting hole, a lock tongue mounting hole and a rotation limit hole, a lock tongue movable hole is provided near the middle of the side of the inspection door body, the lock tongue body is inserted into the lock tongue movable hole, a gasket matching hole and a handle fixing hole are provided on the lock tongue body, the gasket matching hole and the handle fixing hole are respectively aligned with the lock tongue mounting hole and the rotation limit hole, a rotating gasket is sleeved in the gasket matching hole, and the gasket matching hole is provided with a rotating gasket. A first nut is arranged on both sides of the hole, a first bolt passes through the lock tongue mounting hole and the rotating gasket and is threadedly connected to the first nut to mount the lock tongue body, a second nut is arranged on both sides of the handle fixing hole, a screw rod passes through the rotation limiting hole and the handle fixing hole and is threadedly connected to the second nut, and first handles are arranged at both ends of the screw rod; by holding the first handle and lifting the screw rod upward, the lock tongue body can be controlled to move in the lock tongue movable hole, and the rotation limiting hole limits the rotation trajectory of the lock tongue body, thereby controlling the opening and closing of the lock tongue body; the inspection door body is formed by sheet metal processing and has folded edges all around, and the folded edge direction is the inner surface of the inspection door, and the inspection door opens inward.

[0006] Preferably, a third bolt passes through the handle mounting hole, a second handle is provided at one end of the third bolt, and a third nut is provided at a position of the third bolt near the second handle to install the second handle. The first handle and the second handle are both spherical in shape and fit the hand. After installation, they act as door handles, and their own threaded openings directly cooperate with the bolts and the screw rods. After installation, only one first handle is installed on the inner side of the inspection door body, and there are two handles on the outer side, namely the first handle and the second handle. When the cooling tower is running, the inspection door will be affected by the fan and will be subject to inward suction. The two outer handles can effectively ensure the normal opening and closing of the inspection door when the fan is running.

[0007] Preferably, the lock tongue body is in the form of a flat plate bending, one end of the lock tongue body is rectangular and has a gasket matching hole and a handle fixing hole, and the other end of the lock tongue body is in the shape of a right-angled trapezoid.

[0008] Preferably, the rotating gasket is in the shape of a ring, whose outer diameter is smaller than the diameter of the gasket matching hole, whose inner diameter is larger than the diameter of the first bolt, and whose thickness is larger than the thickness of the lock tongue body, thereby ensuring that the entire lock tongue body can rotate flexibly.

[0009] Preferably, shaft holes are provided above and below the inspection door body at positions away from the movable hole of the locking tongue, and the shaft holes are used to connect with the door frame of the cooling tower.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model uses the deadweight of the lock tongue body to limit the position of the inspection door body, and the lock tongue body is rotated upward by the first handle until the inspection door body is in an unlocked state, and the entire lock tongue body running track is limited by the screw rod passing through the rotation limit hole on the door panel. It has the characteristics of simple structure, convenient installation, flexible opening and closing, and the first handles installed at both ends of the screw rod make the door panel easy to open from the inside and outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0014] Figure 3 This is a schematic diagram of the lock tongue structure of the utility model.

[0015] In the figure: 1. Inspection door body; 101. Handle mounting hole; 102. Lock tongue mounting hole; 103. Rotation limit hole; 104. Lock tongue movable hole; 105. Axis hole; 2. Lock tongue body; 201. Gasket matching hole; 202. Handle fixing hole; 3. Rotating gasket; 4. First bolt; 5. First nut; 6. Screw rod; 7. Second nut; 8. First handle; 9. Third bolt; 10. Third nut; 11. Second handle. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] See also Figure 1-3The utility model provides a technical solution: an inspection door, including an inspection door body 1, a lock tongue body 2, a first bolt 4, a first nut 5, a screw rod 6, a second nut 7 and a first handle 8, the inspection door body 1 is provided with a handle mounting hole 101, a lock tongue mounting hole 102, and a rotation limiting hole 103, a lock tongue movable hole 104 is provided near the middle of the side of the inspection door body 1, the lock tongue body 2 is inserted in the lock tongue movable hole 104, a gasket matching hole 201 and a handle fixing hole 202 are provided on the lock tongue body 2, the gasket matching hole 201 and the handle fixing hole 202 are respectively aligned with the lock tongue mounting hole 102 and the rotation limiting hole 103, a rotating gasket 3 is sleeved in the gasket matching hole 201, and the gasket A first nut 5 is arranged on both sides of the matching hole 201, and a first bolt 4 passes through the lock tongue mounting hole 102 and the rotating gasket 3 and is threadedly connected to the first nut 5 to mount the lock tongue body 2. A second nut 7 is arranged on both sides of the handle fixing hole 202, and a screw rod 6 passes through the rotation limiting hole 103 and the handle fixing hole 202 and is threadedly connected to the second nut 7. First handles 8 are arranged at both ends of the screw rod 6; by holding the first handle 8 and lifting the screw rod 6 upward, the lock tongue body 2 can be controlled to move in the lock tongue movable hole 104, and the rotation limiting hole 103 limits the rotation trajectory of the lock tongue body 2, thereby controlling the opening and closing of the lock tongue body 2; the inspection door body 1 is formed by sheet metal processing with folded edges all around, and the folded edge direction is the inner surface of the inspection door, and the inspection door opens inward.

[0020] Furthermore, a third bolt 9 passes through the handle mounting hole 101, and a second handle 11 is arranged at one end of the third bolt 9. A third nut 10 is arranged near the second handle 11 of the third bolt 9 to install the second handle 11. The first handle 8 and the second handle 11 are both spherical in shape and fit the hand. After installation, they serve as door handles, and their own threaded openings directly cooperate with the bolts and the screw rod 6. After installation, only one first handle 8 is installed on the inner side of the inspection door body 1, and there are two handles on the outer side, namely the first handle 8 and the second handle 11. When the cooling tower is running, the inspection door will be affected by the fan and will be subject to inward suction. The two outer handles can effectively ensure the normal opening and closing of the inspection door when the fan is running.

[0021] Furthermore, the lock tongue body 2 is in the form of a flat plate bending, one end of the lock tongue body 2 is rectangular and has a gasket matching hole 201 and a handle fixing hole 202, and the other end of the lock tongue body 2 is in the shape of a right-angled trapezoid.

[0022] Furthermore, the rotating gasket 3 is in a circular ring shape, with an outer diameter smaller than the diameter of the gasket matching hole 201, an inner diameter larger than the diameter of the first bolt 4, and a thickness larger than the thickness of the lock tongue body 2, thereby ensuring that the entire lock tongue body 2 can rotate flexibly.

[0023] Furthermore, shaft holes 105 are provided above and below the inspection door body 1 at positions away from the bolt movable hole 104, and the shaft holes 105 are used to be connected to the door frame of the cooling tower.

[0024] In summary, the utility model is a traditional mechanical type, which cleverly uses the deadweight of the lock tongue body 2 to limit the inspection door body 1. Under normal conditions, the deadweight of the lock tongue body 2 drops to the downward limit position, and the inspection is in a locked state. When in use, it is only necessary to rotate the lock tongue body 2 upward through the first handle 8 until the inspection door is in an unlocked state. The entire running track of the lock tongue body 2 is limited by passing the screw rod 6 through the rotation limit hole 103 on the inspection door body 1. The first handle 8 is installed at both ends of the screw rod 6, which effectively ensures that the mechanical structure can be unlocked from both inside and outside. The simultaneous action of the external double balls can ensure that it can be opened and closed from the outside when the fan is running. It has the characteristics of simple structure, easy installation, stable operation, etc.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An access door, characterized in that: The invention comprises an inspection door body (1), a lock tongue body (2), a first bolt (4), a first nut (5), a screw rod (6), a second nut (7) and a first handle (8); the inspection door body (1) is provided with a handle mounting hole (101), a lock tongue mounting hole (102) and a rotation limit hole (103); a lock tongue movable hole (104) is provided near the middle of the side of the inspection door body (1); the lock tongue body (2) is inserted into the lock tongue movable hole (104); a gasket matching hole (201) and a handle fixing hole (202) are provided on the lock tongue body (2); the gasket matching hole (201) and the handle fixing hole (202) are provided ) are respectively aligned with the bolt mounting hole (102) and the rotation limiting hole (103); a rotation gasket (3) is sleeved in the gasket matching hole (201); and first nuts (5) are arranged on both sides of the gasket matching hole (201); a first bolt (4) passes through the bolt mounting hole (102) and the rotation gasket (3) and is threadedly connected to the first nut (5) to mount the bolt body (2); second nuts (7) are arranged on both sides of the handle fixing hole (202); a screw rod (6) passes through the rotation limiting hole (103) and the handle fixing hole (202) and is threadedly connected to the second nut (7); and first handles (8) are respectively arranged at both ends of the screw rod (6).

2. The inspection door according to claim 1, characterized in that: A third bolt (9) passes through the handle mounting hole (101), a second handle (11) is arranged at one end of the third bolt (9), and a third nut (10) is arranged near the second handle (11) of the third bolt (9) to mount the second handle (11), and both the first handle (8) and the second handle (11) are spherical.

3. The inspection door according to claim 1, characterized in that: The lock tongue body (2) is in the form of a flat plate bending, one end of the lock tongue body (2) is rectangular and has a gasket matching hole (201) and a handle fixing hole (202), and the other end of the lock tongue body (2) is in the shape of a right-angled trapezoid.

4. The inspection door according to claim 1, characterized in that: The rotating gasket (3) is in the shape of a ring, its outer diameter is smaller than the diameter of the gasket matching hole (201), its inner diameter is larger than the diameter of the first bolt (4), and its thickness is larger than the thickness of the locking tongue body (2).

5. The inspection door according to claim 1, characterized in that: Axial holes (105) are provided above and below the inspection door body (1) at positions away from the locking bolt movable hole (104).

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