Quick-opening mechanism and quick-opening type skirt inspection hole protective cover

Abstract

The utility model discloses a quick-opening mechanism and a quick-opening type skirt inspection hole protective cover, which comprise a first fixed seat, a second fixed seat, a third fixed seat and a fourth fixed seat, the second fixing seat is arranged on the other one of the first component and the second component, and a locking groove is formed in the second fixing seat; the adjusting screw rod is rotatably arranged on the first fixed seat; the movable insertion block is provided with a threaded part in threaded fit with the adjusting screw rod and an insertion part used for being in insertion fit with the locking groove, when the insertion part is inserted into the locking groove, the first component and the second component are locked, the movable insertion block moves in the axial direction of the adjusting screw rod so as to be switched between the locking position and the unlocking position, and when the movable insertion block is located at the locking position, the movable insertion block is in threaded fit with the adjusting screw rod. And when the movable insertion block is located at the unlocking position, the insertion part is separated from the locking groove. According to the utility model, the first part and the second part can be locked and unlocked quickly only by rotating the adjusting screw rod, so that the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of skirt-type supports, and more specifically to a quick-opening mechanism and a quick-opening skirt-type inspection hole protective cover. Background Art

[0002] Skirt is the abbreviation of skirt support, which is generally used to support tall upright equipment. The skirt of upright equipment is usually equipped with facilities such as insulation, fire protection, and lead-out pipes, which need to be inspected and maintained regularly. Therefore, an inspection hole is opened on the skirt for staff to enter and exit. The existing skirt inspection hole does not require the installation of an inspection hole protective cover according to the commonly used standards and specifications. The inspection hole is only a circular channel pipe connected to the outside. Although the maintenance operation is relatively simple in this setting, the open skirt inspection hole may cause small animals or unrelated personnel in the vicinity to enter by mistake, causing safety hazards.

[0003] Based on this, many users currently require that the inspection hole must be equipped with a protective cover to improve safety. The common practice in the prior art is to fix the inspection hole protective cover to the inspection hole through a full circle of bolts to cover the inspection hole. Although this method of setting the inspection hole protective cover can avoid the risk of accidentally entering the inspection hole, when opening or closing the inspection hole protective cover, the full circle of bolts need to be removed or reinstalled and locked separately, resulting in cumbersome operation steps, time-consuming and labor-intensive, and if the bolts and nuts are rusted, it will be more inconvenient to handle.

[0004] Therefore, how to quickly open and close the inspection hole protective cover while meeting the protection function and improve the maintenance efficiency has become a technical problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a quick-opening mechanism, so that the inspection hole protection cover can be quickly opened and closed while satisfying the protection function, thereby improving the maintenance efficiency.

[0006] Another object of the utility model is to provide a quick-opening skirt inspection hole protective cover including the quick-opening mechanism.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A quick-opening mechanism, used for locking and unlocking a first component and a second component, comprising:

[0009] A first fixing seat, disposed on one of the first component and the second component;

[0010] A second fixing seat is disposed on the other of the first component and the second component, and a locking groove is disposed on the second fixing seat;

[0011] An adjusting screw, rotatably disposed on the first fixing seat;

[0012] The movable plug block has a threaded portion that cooperates with the thread of the adjusting screw and a plug-in portion that is used to plug and cooperate with the locking groove. When the plug-in portion is inserted into the locking groove, the first component and the second component are locked. The movable plug block moves along the axial direction of the adjusting screw to switch between a locked position and an unlocked position. When the movable plug block is in the locked position, the plug-in portion is inserted into the locking groove. When the movable plug block is in the unlocked position, the plug-in portion is disengaged from the locking groove.

[0013] Optionally, in the above-mentioned quick-opening mechanism, the adjusting screw has a first thread segment and a second thread segment, and the first thread segment and the second thread segment have opposite thread rotation directions;

[0014] There are at least two movable plug blocks, at least one of which is threadably matched with the first thread segment, and at least one of which is threadably matched with the second thread segment.

[0015] Optionally, in the above-mentioned quick-opening mechanism, there are two movable plug blocks, and the two movable plug blocks are symmetrically arranged on both sides of the second fixing seat.

[0016] Optionally, in the above quick-open mechanism, the adjusting screw further has an optical axis segment, and the first thread segment and the second thread segment are symmetrically arranged at two ends of the optical axis segment;

[0017] The optical axis segment is rotatably arranged on the first fixing seat, and a screw displacement limiting portion which is limited by the first fixing seat is arranged on the optical axis segment.

[0018] Optionally, in the above-mentioned quick-opening mechanism, the screw displacement limiting portion is two screw displacement limiting blocks protruding from the outer circumference of the optical axis segment, and the two screw displacement limiting blocks are respectively arranged on both sides of the first fixing seat; or,

[0019] The screw displacement limiting portion is a screw displacement limiting groove recessed on the outer peripheral surface of the optical axis segment, and the screw displacement limiting groove cooperates with the limiting boss of the first fixing seat.

[0020] Optionally, in the above-mentioned quick-opening mechanism, at least one end of the adjusting screw is provided with a rotating block, and the rotating block is used to drive the adjusting screw to rotate; or,

[0021] A rotating block is provided at one end of the adjusting screw, and an insert block limit block is provided at the other end. The rotating block is used to drive the adjusting screw to rotate, and the rotating block is used to limit one of the movable insert blocks from detaching from the adjusting screw, and the insert block limit block is used to limit the other movable insert block from detaching from the adjusting screw.

[0022] Optionally, in the above-mentioned quick-opening mechanism, a plurality of anti-slip grooves arranged at intervals are provided on the outer surface of the rotating block.

[0023] Optionally, in the above quick-opening mechanism, it further comprises a guide rod fixed on one of the first fixing seat and the second fixing seat, and the guide rod is arranged parallel to the adjusting screw;

[0024] The movable plug block is slidably matched with the guide rod.

[0025] Optionally, in the above-mentioned quick-opening mechanism, the guide rod is fixed to the first fixing seat through a guide rod fixing block.

[0026] The quick opening mechanism provided by the utility model can realize the quick locking and unlocking of the first component and the second component. After the first component and the second component are closed, by controlling the rotation of the adjusting screw, the movable plug block that is threadedly matched with the adjusting screw will move along the adjusting screw as the adjusting screw rotates. In the process of the movable plug block moving along the adjusting screw, it will gradually move in the direction close to the locking groove on the second fixed seat until the plug-in portion of the movable plug block is inserted into the locking groove, thereby realizing the locking of the first component and the second component. Since the plug-in portion needs to be disengaged from the locking groove when the first component and the second component are opened, the locking of the first component and the second component can prevent the accidental opening and the occurrence of danger. When the first component and the second component need to be opened, it is only necessary to rotate the adjusting screw in the opposite direction so that the movable plug block gradually moves in the direction away from the locking groove until the plug-in portion of the movable plug block is disengaged from the locking groove, thereby realizing the unlocking of the first component and the second component. At this time, since the locking of the quick opening structure is lost, the first component and the second component can be opened according to demand. The utility model only needs to rotate the adjusting screw to quickly realize the mutual locking and unlocking of the first component and the second component, thereby improving the maintenance efficiency.

[0027] A quick-opening skirt inspection hole protective cover, comprising:

[0028] An annular support and a protective cover body, wherein one side of the protective cover body is hinged to the annular support via a hinge shaft;

[0029] The quick opening mechanism is a quick opening mechanism as described in any one of the above items, wherein the first component is the annular support, the second component is the protective cover body, and the quick opening mechanism and the hinge shaft are staggered.

[0030] The quick-opening skirt seat inspection hole protective cover provided by the utility model has the quick-opening mechanism mentioned above, and therefore has all the technical effects of the quick-opening mechanism mentioned above, which will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a schematic diagram of the structure of the quick-opening skirt seat inspection hole protection cover disclosed in the embodiment of the utility model;

[0033] Figure 2 It is a partial cross-sectional view of the quick-opening skirt inspection hole protective cover disclosed in the embodiment of the utility model;

[0034] Figure 3 for Figure 1 A partial enlarged view of middle A;

[0035] Figure 4 for Figure 1 A partial enlarged view of B in the middle;

[0036] Figure 5 for Figure 2 A partial enlarged view of C in the middle.

[0037] The meanings of the reference numerals in the figures are as follows:

[0038] 100-first component; 110-third fixing seat;

[0039] 200-second component; 210-rotating sleeve;

[0040] 300-quick opening mechanism; 310-first fixed seat; 320-second fixed seat; 321-locking groove; 330-adjusting screw; 331-rotating block; 332-insertion block limit block; 340-movable insertion block; 350-guide rod; 360-guide rod fixing block; 370-screw displacement limit part;

[0041] 400 - Articulated shaft. DETAILED DESCRIPTION

[0042] The core of the utility model is to provide a quick-opening mechanism, so that the inspection hole protection cover can be quickly opened and closed while meeting the protection function, thereby improving the maintenance efficiency.

[0043] Another core of the utility model is to provide a quick-opening skirt seat inspection hole protective cover including the quick-opening mechanism.

[0044] The following is an explanation of the embodiments with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the contents of the utility model described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to those necessary as solutions of the utility model described in the claims. It should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. In the absence of conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0045] The inspection hole protective cover is fixed to the inspection hole by a full circle of bolts to cover the inspection hole. Although this fixing method can achieve the locking of the inspection hole protective cover at the inspection hole and prevent the inspection hole protective cover from falling off, it makes it difficult to open the inspection hole protective cover.

[0046] Based on this, the embodiment of the utility model discloses a quick-opening mechanism, which can quickly open and close the inspection hole protective cover while satisfying the protection function, thereby improving the maintenance efficiency. It should be noted that the quick-opening mechanism disclosed in this embodiment is not limited to the locking and unlocking of the inspection hole protective cover, but can also be used for other products with similar needs. The following text will introduce the locking and unlocking of the first component 100 and the second component 200 as an example. When it is applied to the field of inspection holes, the first component 100 is an annular support, and the second component 200 is the protective cover body.

[0047] like Figure 4 and Figure 5 As shown, the quick-opening mechanism disclosed in the embodiment of the utility model includes a first fixing seat 310 , a second fixing seat 320 , an adjusting screw 330 and a movable insert block 340 .

[0048] The first fixing seat 310 is disposed on one of the first component 100 and the second component 200; the second fixing seat 320 is disposed on the other of the first component 100 and the second component 200, and a locking groove 321 is disposed on the second fixing seat 320. In this embodiment, for ease of understanding, the first fixing seat 310 is disposed on the first component 100, and the second fixing seat 320 is disposed on the second component 200. It should be noted that the first fixing seat 310 and the second fixing seat 320 can also be disposed in the opposite direction.

[0049] In addition, the first fixing seat 310 can be fixed to the first component 100 by fasteners, or welded to the first component 100, and of course the first fixing seat 310 and the first component 100 can also be designed as an integrated structure. Correspondingly, the second fixing seat 320 can be fixed to the second component 200 by fasteners, or welded to the second component 200, and of course the second fixing seat 320 and the second component 200 can also be designed as an integrated structure.

[0050] The adjusting screw 330 is rotatably disposed on the first fixing seat 310. It should be noted that the adjusting screw 330 should be axially limited on the first fixing seat 310 so that the adjusting screw 330 can only rotate around its own axis and cannot move axially.

[0051] The movable plug block 340 has a threaded portion that is threadably matched with the adjusting screw 330, and a plug-in portion that is plugged into and matched with the locking groove 321. By rotating the adjusting screw 330, the movable plug block 340 can be moved axially along the adjusting screw 330, and the moving direction of the movable plug block 340 can be changed according to the different rotation directions of the adjusting screw 330.

[0052] By moving the movable plug block 340, the plug-in portion can be moved between the inside and outside of the locking groove 321. For example, when the plug-in portion is inserted into the locking groove 321, the first component 100 and the second component 200 are locked, and the movable plug block 340 moves along the axial direction of the adjusting screw 330 to switch between the locking position and the unlocking position. When the movable plug block 340 is in the locking position, the plug-in portion is inserted into the locking groove 321, and when the movable plug block 340 is in the unlocking position, the plug-in portion is separated from the locking groove 321.

[0053] When the first component 100 and the second component 200 need to be separated, the adjusting screw 330 needs to be rotated to put the movable plug block 340 in the unlocked position; when the first component 100 and the second component 200 need to be fixed, the adjusting screw 330 needs to be rotated to put the movable plug block 340 in the locked position.

[0054] The quick opening mechanism provided by the utility model can realize the rapid locking and unlocking of the first component 100 and the second component 200. After the first component 100 and the second component 200 are closed, by controlling the rotation of the adjusting screw 330, the movable plug 340 threadedly matched with the adjusting screw 330 will move along the adjusting screw 330 as the adjusting screw 330 rotates. In the process of the movable plug 340 moving along the adjusting screw 330, it will gradually move in the direction close to the locking groove 321 on the second fixed seat 320 until the plug-in portion of the movable plug 340 is inserted into the locking groove 321, thereby realizing the locking of the first component 100 and the second component 200.

[0055] Since the plug-in portion needs to be disengaged from the locking groove 321 when the first component 100 and the second component 200 are opened, the locking of the first component 100 and the second component 200 can prevent accidental opening and dangerous situations. When the first component 100 and the second component 200 need to be opened, it is only necessary to rotate the adjusting screw 330 in the opposite direction so that the movable plug block 340 gradually moves away from the locking groove 321 until the plug-in portion of the movable plug block 340 is disengaged from the locking groove 321, thereby unlocking the first component 100 and the second component 200. At this time, since the locking of the quick-opening structure is lost, the first component 100 and the second component 200 can be opened as needed. The utility model only needs to rotate the adjusting screw 330 to quickly realize the mutual locking and unlocking of the first component 100 and the second component 200, thereby improving the maintenance efficiency.

[0056] In order to improve the stability of mutual locking and unlocking of the first component 100 and the second component 200, in this embodiment, the adjusting screw 330 has a first thread segment and a second thread segment, and the thread rotation directions of the first thread segment and the second thread segment are opposite. It should be noted that the pitches of the first thread segment and the second thread segment can be the same or different. When the pitches of the first thread segment and the second thread segment are different, by rotating the adjusting screw 330, the moving distances of the moving plug 340 matched with the first thread segment and the second thread segment are different. In other words, the moving speeds of the moving plug 340 matched with the first thread segment and the second thread segment are different. It is sufficient to ensure that the moving plug 340 matched with the first thread segment and the second thread segment can achieve simultaneous insertion and disengagement with the corresponding locking grooves 321.

[0057] Inserting and disengaging from the locking slot 321 simultaneously does not specifically mean synchronization. As long as one of the movable blocks 340 is inserted into the corresponding locking slot 321, the other movable block 340 can also be inserted into the corresponding locking slot 321; accordingly, when one of the movable blocks 340 is disengaged from the corresponding locking slot 321, the other movable block 340 can also be disengaged from the corresponding locking slot 321.

[0058] There are at least two movable plugs 340, and at least one is threadedly matched with the first thread segment, and at least one is threadedly matched with the second thread segment. It should be noted that one movable plug 340 can be set on the first thread segment and the second thread segment, or multiple movable plugs 340 can be set. When multiple movable plugs 340 are set, the plug-in parts of the movable plugs 340 located on the same thread segment (first thread segment / second thread segment) should be staggered, for example, they can be staggered in the up and down directions. Among the multiple movable plugs 340 arranged at intervals in the axial direction of the same thread end, among any two adjacent movable plugs 340, the plug-in part of the movable plug 340 located on the outside (the outside refers to the side away from the second fixed seat 320) is defined as the first plug-in part, and the plug-in part of the movable plug 340 located on the inside (the inside refers to the side close to the second fixed seat 320) is defined as the second plug-in part. The first plug-in part is located at the lower side of the second plug-in part, and correspondingly, multiple locking grooves 321 need to be opened in the height direction.

[0059] In this embodiment, two movable plug blocks 340 are used as an example for description. From the perspective of locking, the two movable plug blocks 340 can ensure the reliability of the mutual locking of the first component 100 and the second component 200, and the two movable plug blocks 340 are symmetrically arranged on both sides of the second fixed seat 320. In order to achieve synchronous movement of the two movable plug blocks 340, the pitch of the first thread segment and the second thread segment should be the same.

[0060] In a specific embodiment of the present invention, the adjusting screw 330 further has an optical axis segment, and the first thread segment and the second thread segment are symmetrically arranged at both ends of the optical axis segment, that is, the optical axis segment is arranged between the first thread segment and the second thread segment.

[0061] The optical axis section is a supporting part of the adjusting screw 330 and is rotatably arranged on the first fixing seat 310. It should be noted that the optical axis section can be supported on the first fixing seat 310 through supporting parts such as bearings and sleeves to reduce the resistance when the adjusting screw 330 rotates; of course, it can also be directly rotatably arranged on the first fixing seat 310. Since there is no requirement for the rotation speed of the adjusting screw 330, and the adjusting screw 330 is usually only required to be rotated during maintenance, even if supporting parts such as bearings are not provided, the difficulty of using the quick-opening mechanism will not be significantly increased.

[0062] The optical axis section is provided with a screw displacement limiting portion 370 which is limited with the first fixing seat 310. In this embodiment, by providing the screw displacement limiting portion 370 on the optical axis section, the limiting effect of the screw displacement limiting portion 370 and the first fixing seat 310 can be used to prevent the adjusting screw 330 from axially moving when rotating, so that the adjusting screw 330 has only rotational freedom.

[0063] Specifically, the screw displacement limit portion 370 is two screw displacement limit blocks protruding from the outer circumferential surface of the optical axis segment, and the two screw displacement limit blocks are respectively arranged on both sides of the first fixed seat 310. When the adjusting screw 330 has a tendency to move to the left, the screw displacement limit portion 370 located on the right side of the first fixed seat 310 forms a limit with the first fixed seat 310 to prevent the adjusting screw 330 from moving to the left; when the adjusting screw 330 has a tendency to move to the right, the screw displacement limit portion 370 located on the left side of the first fixed seat 310 forms a limit with the first fixed seat 310 to prevent the adjusting screw 330 from moving to the right.

[0064] It should be noted that when the adjusting screw 330 rotates, the screw displacement limiter 370 rotates synchronously. In order to avoid interference between the screw displacement limiter 370 and surrounding components during rotation, the screw displacement limiter 370 can be designed as a disc structure coaxially arranged with the adjusting screw 330.

[0065] The screw displacement limiting portion 370 can also be a screw displacement limiting groove concave on the outer circumference of the optical axis segment, and the screw displacement limiting groove cooperates with the limiting boss of the first fixing seat 310. Such a configuration can also limit the left and right movement of the adjusting screw 330 along the axial direction.

[0066] In order to facilitate the rotation of the adjusting screw 330, in this embodiment, at least one end of the adjusting screw 330 is provided with a rotating block 331, and the rotating block 331 is used to drive the adjusting screw 330 to rotate. When rotating the adjusting screw 330, the operator can manually rotate the rotating block 331 so that the adjusting screw 330 rotates accordingly. The rotating block 331 can have a larger outer dimension than the adjusting screw 330 to facilitate operation. The rotating block 331 can be a cylindrical structure coaxially arranged with the adjusting screw 330, or it can be a prismatic structure, as long as it can facilitate the rotation of the adjusting screw 330.

[0067] Rotating blocks 331 may be provided at both ends of the adjusting screw 330. In addition to facilitating the operator to rotate the adjusting screw 330, the rotating blocks 331 also have a limiting effect on the movable plug block 340, thereby preventing the movable plug block 340 from detaching from the adjusting screw 330 due to excessive moving distance when moving in a direction away from the second fixed seat 320.

[0068] In addition, a rotating block 331 may be provided at one end of the adjusting screw 330, and an insert block limit block 332 may be provided at the other end. The rotating block 331 is used to drive the adjusting screw 330 to rotate, and the rotating block 331 is used to limit one of the movable insert blocks 340 from being separated from the adjusting screw 330, that is, the rotating block 331 not only assists the rotation of the adjusting screw 330, but also limits the movable insert block 340. The insert block limit block 332 is used to limit the other movable insert block 340 from being separated from the adjusting screw 330. The difference between the insert block limit block 332 and the rotating block 331 is that the insert block limit block 332 may not have the ability to conveniently rotate the adjusting screw 330, and there is no friction requirement on its outer surface. As long as it can form a limit, the outer surface may be a smooth structure, and there is no requirement for its width along the axial direction of the adjusting screw 330.

[0069] Since the rotating block 331 needs to facilitate the operator to rotate the adjusting screw 330, it needs to have a high friction force so that the operator can avoid the fingers and the rotating block 331 from slipping when the rotating block 331 is rotated. In this embodiment, a plurality of anti-skid grooves arranged at intervals are provided on the outer surface of the rotating block 331. The extension direction of the anti-skid groove can be parallel to the axial direction of the adjusting screw 330. The torque of the operator rotating the rotating block 331 is perpendicular to the axial direction of the adjusting screw 330, and therefore is also perpendicular to the anti-skid groove. The anti-skid groove has a large friction force with the operator's fingers, making it easier to rotate the adjusting screw 330.

[0070] In order to improve the stability of the movable plug block 340 when it moves, in this embodiment, the quick opening mechanism may further include a guide rod 350 fixed to one of the first fixed seat 310 and the second fixed seat 320, and the guide rod 350 is arranged parallel to the adjustment screw 330. The movable plug block 340 and the guide rod 350 are slidably matched. Specifically, a sliding hole may be provided on the movable plug block 340, and the sliding hole may be used to sleeve the movable plug block 340 on the guide rod 350.

[0071] It should be noted that there are many solutions for guiding the mobile plug block 340, such as a slide rail and slide groove structure. A slide groove that cooperates with the slide rail is provided on the mobile plug block 340, which can also determine the moving direction of the mobile plug block 340.

[0072] Furthermore, the guide rod 350 can be fixed to the first fixing seat 310 by means of a guide rod fixing block 360. The guide rod fixing block 360 can be designed to be an integrated structure with the first fixing seat 310, or can be welded to the first fixing seat 310, or can be fixed to the first fixing seat 310 by means of a fastener. The present invention does not limit the connection method between the guide rod fixing block 360 and the first fixing seat 310. Similarly, the fixing method of the guide rod 350 and the guide rod fixing block 360 is also not limited.

[0073] like Figure 1-Figure 3As shown, the embodiment of the utility model also discloses a quick-open skirt seat inspection hole protective cover, which includes an annular support, a protective cover body and a quick-open mechanism 300. Among them, one side of the protective cover body is hinged to the annular support through a hinge shaft 400.

[0074] Specifically, a third fixed seat 110 may be provided on the annular support, and two third fixed seats 110 may be provided, and the two ends of the hinge shaft 400 are respectively connected to the two third fixed seats 110. A rotating sleeve 210 is rotatably provided on the hinge shaft 400, and the rotating sleeve 210 is fixedly connected to the protective cover body. It should be noted that this is only for the convenience of understanding of the scheme, and a method of implementing that the protective cover body is hinged to the annular support through the hinge shaft 400 is listed. Those skilled in the art can understand that there are many other ways to realize the hinge connection between the protective cover body and the annular support, and it is not limited to the methods listed in the above embodiments.

[0075] The quick opening mechanism 300 is the quick opening mechanism 300 disclosed in the above embodiment, the first component 100 disclosed in the above embodiment is an annular support, the second component 200 is a protective cover body, and the quick opening mechanism 300 and the hinge shaft 400 are staggered. As a preferred embodiment, the quick opening mechanism 300 and the hinge shaft 400 can be staggered by 180°.

[0076] In summary, the quick-opening skirt inspection hole protective cover disclosed in the embodiment of the utility model has the following technical effects:

[0077] 1. This embodiment realizes the function of quickly opening the inspection hole protection cover through the structural design of the quick opening mechanism 300, and solves the technical problems caused by the existing skirt seat not being provided with an inspection hole protection cover or fixing the inspection hole protection cover of the skirt seat by multiple bolts. For example, when opening the inspection hole protection cover, it is necessary to remove a whole circle of multiple bolts separately before it can be completed, resulting in a long time in use and cumbersome operation steps. This embodiment improves the convenience of opening through the structural design of the quick opening mechanism 300;

[0078] 2. This embodiment realizes the function of rapid closing and locking through the structural design of the quick opening mechanism 300, which solves the problem in the prior art that after the inspection hole protective cover is removed, it is necessary to fix it with bolts one by one, which results in complicated operation steps and reduced work efficiency.

[0079] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0080] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0081] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0082] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A quick opening mechanism, characterized in that: Used for locking and unlocking a first component (100) and a second component (200), comprising: A first fixing seat (310) is disposed on one of the first component (100) and the second component (200); A second fixing seat (320) is disposed on the other of the first component (100) and the second component (200), and a locking groove (321) is disposed on the second fixing seat (320); An adjusting screw (330) rotatably disposed on the first fixing seat (310); The movable plug block (340) comprises a threaded portion threadably matched with the adjusting screw (330), and a plug-in portion for plugging and matching with the locking groove (321). When the plug-in portion is inserted into the locking groove (321), the first component (100) and the second component (200) are locked. The movable plug block (340) moves along the axial direction of the adjusting screw (330) to switch between a locked position and an unlocked position. When the movable plug block (340) is in the locked position, the plug-in portion is inserted into the locking groove (321). When the movable plug block (340) is in the unlocked position, the plug-in portion is disengaged from the locking groove (321).

2. The quick opening mechanism according to claim 1, characterized in that: The adjusting screw (330) comprises a first thread segment and a second thread segment, wherein the thread rotation directions of the first thread segment and the second thread segment are opposite; There are at least two movable plug blocks (340), at least one of which is threadably matched with the first thread segment, and at least one of which is threadably matched with the second thread segment.

3. The quick opening mechanism according to claim 2, characterized in that: There are two movable plug blocks (340), and the two movable plug blocks (340) are symmetrically arranged on both sides of the second fixed seat (320).

4. The quick opening mechanism according to claim 2, characterized in that: The adjusting screw (330) further comprises an optical axis segment, and the first thread segment and the second thread segment are symmetrically arranged at two ends of the optical axis segment; The optical axis section is rotatably arranged on the first fixing seat (310), and a screw displacement limiting portion (370) is provided on the optical axis section for limiting the position of the first fixing seat (310).

5. The quick opening mechanism according to claim 4, characterized in that: The screw displacement limiting portion (370) is two screw displacement limiting blocks protruding from the outer peripheral surface of the optical axis segment, and the two screw displacement limiting blocks are respectively arranged on both sides of the first fixing seat (310); or, The screw displacement limiting portion (370) is a screw displacement limiting groove recessed on the outer peripheral surface of the optical axis segment, and the screw displacement limiting groove cooperates with the limiting boss of the first fixing seat (310).

6. The quick opening mechanism according to claim 2, characterized in that: At least one end of the adjusting screw (330) is provided with a rotating block (331), and the rotating block (331) is used to drive the adjusting screw (330) to rotate; or, A rotating block (331) is provided at one end of the adjusting screw (330), and an insert block limiting block (332) is provided at the other end; the rotating block (331) is used to drive the adjusting screw (330) to rotate, and the rotating block (331) is used to limit one of the movable insert blocks (340) from being separated from the adjusting screw (330); and the insert block limiting block (332) is used to limit the other movable insert block (340) from being separated from the adjusting screw (330).

7. The quick opening mechanism according to claim 6, characterized in that: A plurality of anti-slip grooves arranged at intervals are provided on the outer surface of the rotating block (331).

8. The quick opening mechanism according to any one of claims 1 to 7, characterized in that: It also includes a guide rod (350) fixed on one of the first fixing seat (310) and the second fixing seat (320), wherein the guide rod (350) is arranged in parallel with the adjusting screw (330); The movable insert block (340) is slidably matched with the guide rod (350).

9. The quick opening mechanism according to claim 8, characterized in that: The guide rod (350) is fixed to the first fixing seat (310) via a guide rod fixing block (360).

10. A quick-opening skirt inspection hole protective cover, characterized in that: include: An annular support and a protective cover body, one side of the protective cover body being hinged to the annular support via a hinge shaft (400); The quick opening mechanism (300) is the quick opening mechanism (300) according to any one of claims 1 to 9, wherein the first component (100) is the annular support, the second component (200) is the protective cover body, and the quick opening mechanism (300) and the hinge shaft (400) are staggered.

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