Access door capable of being quickly opened and closed

Abstract

The utility model provides an access door capable of being opened and closed quickly, which comprises an access plate, a manhole is arranged on one side of the access plate, a support positioned on one side of the manhole is fixedly connected to one side of the access plate, an arm rod is hinged to the top of the support, and a cover plate used for blocking the manhole on the access plate is hinged to one side of the arm rod. One side of the maintenance plate is fixedly connected with a positioning seat located on the other side of the manhole, and a U-shaped plate is arranged on the positioning seat. According to the utility model, the positioning seat, the U-shaped plate, the screw rod, the turntable and the pressing plate are arranged, so that the arm rod carrying the cover plate can push the pressing plate to extrude the arm rod when driving the cover plate to be closed, and then when the screw rod is screwed, the pressing plate extrudes the arm rod and improves the extrusion tightness between the cover plate and the maintenance plate; the device has the advantage that the operation of closing and locking the cover plate is quicker, and on the contrary, the cover plate can be controlled to be opened by lifting the screw rod after the screw rod is unscrewed.

Description

TECHNICAL FIELD

[0001] The utility model relates to manhole access door technical field, specifically for a kind of access door of quick opening and closing. BACKGROUND

[0002] Access door is the structure that some large pipeline or boiler engineering is indispensable, mainly to facilitate maintenance personnel maintenance or repair equipment.Access door is not frequently opened and closed, but needs to be quickly opened when fault occurs, so quick-opening performance becomes an important indicator of access door.

[0003] The utility model with publication number CN210858469U proposes a quick-opening access door, including bottom plate, cover and sealing ring, the bottom plate is opened and closed with access hole, the sealing ring is fixed on the bottom plate and is around access hole setting, one end of cover is hinged on the bottom plate, so that cover can be covered on sealing ring or is turned over from sealing ring, the other end of cover and the position of bottom plate relative to the position of other end of cover is provided with locking device for locking bottom plate and cover.In need of overhaul, operator rotates rotating handle, makes screw rod leave turnover arm, releases the locking of screw rod to turnover arm, then, operator turns over crank arm, quickly releases the influence of crank arm to turnover arm, then operator can turn over cover plate, opens access hole.Through the above-mentioned setting, operator only needs to rotate screw rod a small distance, can turn over crank arm, quickly releases the locking of cover plate, to quickly open and close valve plate, reduces the time of opening and closing cover plate, improves overhaul speed.

[0004] However, the above-mentioned prior art still has the following problems in use: 1, there is the problem of inconvenient operation when cover is closed, specifically, when cover is closed, manually rotating crank arm is needed, then manually rotating screw rod through handle, screw rod is tightened to press turnover arm, at this time, the closing of cover is realized, and this kind of closing locking mode still has the defect of low closing efficiency;2, since access door is not frequently opened, sealing ring is easy to be adhered to cover and bottom plate after long-time closing of cover, which leads to the increase of opening resistance of cover, and further has the defect of laborious and time-consuming opening.

[0005] Therefore, the utility model provides a kind of access door of quick opening and closing. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies of the prior art, the utility model aims to provide an access door that can be quickly opened and closed to solve the problems raised in the background art, and the access door of the utility model has the advantages of being more quick and labor-saving when opening and closing.

[0007] In order to achieve the above object, the utility model is through the following technical scheme to realize: a kind of maintenance door of quick opening and closing, including access panel, the side of access panel is equipped with manhole, the side of access panel is fixedly connected with the support of one side of manhole, the top of support is hingedly connected with arm rod, the side of arm rod is hingedly connected with the cover plate for plugging the manhole on access panel, characterized by, the side of access panel is fixedly connected with the locating seat of the other side of manhole, U-shaped plate is arranged on locating seat, U-shaped plate is rotatably connected with the position of both sides and near middle part of locating seat, the free end of arm rod is screw-connected with the lead screw that cooperates with the inner groove of U-shaped plate, the rotating disc is sleeved on the lead screw, the open end of U-shaped plate is fixedly connected with two pressing plates that cooperate with the side of arm rod.

[0008] Further, the locating seat is a groove structure and a support sleeve is welded to the top of the locating seat, the locating shaft is rotatably connected to the both sides of the U-shaped plate and welded to the support sleeve, and a torsion spring is sleeved on the locating shaft and cooperates with the support sleeve.

[0009] Further, two support shafts are welded to the outer peripheral wall of the rotating disc and symmetrically distributed, and a baffle disc is sleeved on the outside of the rotating disc and rotatably connected to the support shafts.

[0010] Further, the both sides of the arm rod are welded to a supporting plate, a limiting hole is formed in the plate surface of the supporting plate, and a limiting rod is welded to the free end of the pressing plate and cooperates with the limiting hole.

[0011] Further, a plug hole is formed in one side of the two pressing plates and coaxially arranged and close to the limiting rod, and a pin hole is formed in one side of the arm rod and cooperates with the plug hole.

[0012] Further, a driving head is welded to one end of the lead screw, and a power stick is slidably connected through the outer peripheral wall of the driving head.

[0013] Further, a handlebar is rotatably connected to the outer peripheral wall of the power stick and close to one end.

[0014] The utility model has the following advantages:

[0015] 1. In the utility model, by setting the locating seat, U-shaped plate, lead screw, rotating disc and pressing plate, the arm rod carrying the cover plate can push the pressing plate to extrude on itself when driving the cover plate to close, then when tightening the lead screw, the pressing plate will extrude the arm rod and improve the extrusion sealing degree between the cover plate and the access panel, this kind of setting has the advantage that closing and locking the cover plate is more quick, and vice versa, lifting the lead screw after loosening the lead screw can control the cover plate to open.

[0016] 2. In the utility model, when the opening resistance is generated between the cover plate and the maintenance plate, the pressing plate is pulled manually to the direction far from the cover plate at this time, the U-shaped plate acts as a crowbar and props up the arm lever at this time, the cover plate is separated from the maintenance plate, thereby the quick opening of the cover plate can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the utility model quick open and close maintenance door;

[0018] Figure 2 It is Figure 1 It is a schematic view of the local "a" after amplification;

[0019] Figure 3 It is Figure 1 It is a schematic view of the bottom.

[0020] In the drawing: 1, maintenance plate;11, manhole;12, support;13, positioning seat;131, support sleeve;2, arm lever;21, supporting plate;211, limiting hole;22, pin hole;3, cover plate;4, U-shaped plate;41, positioning shaft;411, torsional spring;5, lead screw;51, driving head;511, power stick;5111, steering handle;7, rotary disc;71, support shaft;8, pressing plate;81, limiting rod;82, jack;9, baffle disc. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0022] Please refer to Figures 1 to 3 The utility model provides a technical scheme: a kind of quick open and close maintenance door, including maintenance plate 1, the side of maintenance plate 1 is provided with manhole 11, manhole 11 is the passageway into the inside of tank, the side of this maintenance plate 1 is fixedly connected with the support 12 located manhole 11 side, the top of the support 12 is hingedly connected with arm lever 2, the side of arm lever 2 is hinged with the cover plate 3 for plugging the manhole 11 on maintenance plate 1, when arm lever 2 is rotated towards maintenance plate 1, arm lever 2 can drive cover plate 3 to press on maintenance plate 1, and sealing washer is installed between maintenance plate 1 and cover plate 3 when using.

[0023] In the technical solution, the positioning seat 13 is fixedly connected to one side of the maintenance plate 1 and located on the other side of the manhole 11, and the U-shaped plate 4 is arranged on the positioning seat 13, and the two sides of the U-shaped plate 4 are rotationally connected to the positioning seat 13 and close to the middle part. In the specific implementation, the positioning seat 13 is preferably a groove structure, and a support sleeve 131 is welded to the top of the positioning seat 13. The U-shaped plate 4 is located in the positioning seat 13, and the two sides of the U-shaped plate 4 are welded with positioning shafts 41 that are rotationally connected to the support sleeve 131. A torsional spring 411 that cooperates with the support sleeve 131 is sleeved on the positioning shaft 41. When the U-shaped plate 4 is not stressed, the U-shaped plate 4 is in a parallel state with the maintenance plate 1. The free end of the arm rod 2 is screw-coupled with a lead screw 5 that cooperates with the gap of the inner groove of the U-shaped plate 4. The gap cooperation refers to that, during the rotation of the arm rod 2 to the limit position of the maintenance plate 1, the lead screw 5 enters the inner groove from the opening of the U-shaped plate 4. The lead screw 5 is sleeved with a rotating disc 7. The rotation of the lead screw 5 drives the rotating disc 7 to move to one side of the U-shaped plate 4. After the rotating disc 7 abuts against the U-shaped plate 4, the rotating disc 7 drives the U-shaped plate 4 to rotate. The opening end of the U-shaped plate 4 is fixedly connected with two pressing plates 8 that cooperate with one side of the arm rod 2. When the U-shaped plate 4 rotates to the limit position, the two pressing plates 8 abut against the arm rod 2. At this time, the arm rod 2 is subjected to the extrusion force in the direction of the maintenance plate 1. At this time, the cover plate 3 is closed. When it is needed to open the cover plate 3, the lead screw 5 is reversely rotated, and then the lead screw 5 is lifted to drive the arm rod 2 to swing to control the opening of the cover plate 3.

[0024] In the embodiment, the outer peripheral wall of the rotating disc 7 is welded with two symmetrically distributed support shafts 71, and the rotating disc 7 is externally sleeved with a baffle disc 9 that is rotationally connected to the support shafts 71. Since the U-shaped plate 4 is in linear contact with the rotating disc 7 when the U-shaped plate 4 rotates, the baffle disc 9 is arranged to replace the rotating disc 7 to be in surface contact with the U-shaped plate 4. This arrangement can avoid the damage of the lead screw 5.

[0025] In the embodiment, the two sides of the arm rod 2 are welded with a supporting plate 21, and the plate surface of the supporting plate 21 is provided with a limiting hole 211. The free end of the pressing plate 8 is welded with a limiting rod 81 that cooperates with the gap of the limiting hole 211. When the free end of the pressing plate 8 abuts against the supporting plate 21, the limiting rod 81 is inserted into the limiting hole 211. This arrangement can prevent the pressing plate 8 from sliding away from the arm rod 2 after being stressed.

[0026] Further, the one side of the two pressing plates 8 is provided with a coaxial insertion hole 82 close to the limiting rod 81, and the one side of the arm rod 2 is provided with a pin hole 22 that cooperates with the insertion hole 82. When the cover plate 3 is in the closed state, the pin hole 22 and the insertion hole 82 are coaxial. When a pin is inserted into the pin hole 22 and the insertion hole 82, the stability of the closed cover plate 3 can be improved.

[0027] The one end of the screw rod 5 is welded with a driving head 51, the outer wall of the driving head 51 is penetrated and slidably connected with a force bar 511, the artificial hand holding the force bar 511 can control the rotation of the screw rod 5 when driving the driving head 51 to rotate, and the setting has the advantages of saving labor and controlling the rotation of the screw rod 5.

[0028] Further, the outer wall of the force bar 511 is rotationally connected with a handlebar 5111 close to one end, the handlebar 5111 is perpendicular to the force bar 511, and the rotation axis of the handlebar 5111 is perpendicular to the axis of the force bar 511, so that the hand holding the handlebar 5111 can quickly control the rotation of the screw rod 5.

[0029] Working principle: when the cover plate 3 needs to be opened, the force bar 511 is held to loosen the screw rod 5, then the handlebar 5111 is held to quickly rotate the screw rod 5, under the driving of the torsion spring 411, the U-shaped plate 4 rotates and drives the pressing plate 8 to move away from the supporting plate 21, at this time the screw rod 5 is manually held and lifted, when there is a lifting resistance, the top of the U-shaped plate 4 is held and pulled away from the cover plate 3, at this time the bottom of the U-shaped plate 4 will pry the arm lever 2 upwards, so that the cover plate 3 can overcome the adhesion and separate from the maintenance plate 1, at this time the cover plate 3 is opened.

[0030] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A quick-opening and closing inspection door, comprising an inspection plate (1), wherein a manhole (11) is provided on one side of the inspection plate (1), a support (12) is fixedly connected to one side of the inspection plate (1) and located on one side of the manhole (11), an arm (2) is hinged to the top of the support (12), and a cover plate (3) for sealing the manhole (11) on the inspection plate (1) is hinged to one side of the arm (2), characterized in that, The inspection plate (1) is fixedly connected to a positioning seat (13) located on the other side of the manhole (11). A U-shaped plate (4) is provided on the positioning seat (13). The two sides of the U-shaped plate (4) and the position near the middle are rotatably connected to the positioning seat (13). The free end of the arm (2) is screwed to a lead screw (5) that is in clearance with the inner groove of the U-shaped plate (4). A turntable (7) is sleeved on the lead screw (5). The open end of the U-shaped plate (4) is fixedly connected to two pressure plates (8) that are used in conjunction with one side of the arm (2).

2. The inspection door that can be quickly opened and closed according to claim 1, characterized in that: The positioning seat (13) has a groove structure and a support sleeve (131) is welded to its top. The U-shaped plate (4) is located inside the positioning seat (13) and has a positioning shaft (41) that is rotatably connected to the support sleeve (131) welded to both sides. A torsion spring (411) that works with the support sleeve (131) is sleeved on the positioning shaft (41).

3. The inspection door that can be quickly opened and closed according to claim 1, characterized in that: The turntable (7) has two symmetrically distributed support shafts (71) welded to its outer peripheral wall, and a baffle (9) that is rotatably connected to the support shafts (71) is sleeved on the outside of the turntable (7).

4. The inspection door that can be quickly opened and closed according to claim 1, characterized in that: The arm (2) is welded with a support plate (21) on both sides. A limit hole (211) is opened on the plate surface of the support plate (21). A limit rod (81) that is clearance-fitted with the limit hole (211) is welded to the free end of the pressure plate (8).

5. A quick-opening and closing inspection door according to claim 4, characterized in that: One side of each of the two pressure plates (8) is provided with a coaxial insertion hole (82) close to the limiting rod (81), and one side of the arm (2) is provided with a pin hole (22) that cooperates with the insertion hole (82).

6. A quick-opening and closing inspection door according to claim 1, characterized in that: One end of the lead screw (5) is welded with a drive head (51), and an assist rod (511) is slidably connected through the outer peripheral wall of the drive head (51).

7. A quick-opening and closing inspection door according to claim 6, characterized in that: The outer peripheral wall of the assist rod (511) is rotatably connected to a handle (5111) near one end.

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