Limitable hoisting type manhole door device
By designing a limitable lifting manhole door device, the weight of the manhole door is supported by arc-shaped lifting support and hook-lock structures, and a limit structure is set on the fixed bracket, the problems of deformation, high replacement cost and inability to fix the angle of the support components of the traditional manhole door device are solved, and the stability and safety of the device are improved.
Patent Information
- Application Number
- CN202420412603.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-04
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-03-04
AI Technical Summary
Traditional hoisted manhole doors have problems such as deformation of support components, high replacement costs, and inability to fix the angle after opening, resulting in low safety.
A limitable lifting manhole door device is designed, adopting an arc-shaped lifting support and hook lock structure, supporting the weight of the manhole door through a bearing and a fixed bracket, and a limit structure is set on the fixed bracket to fix the angle of the manhole door.
It effectively solves the problem of high deformation and replacement costs of support components, improves the stability and stability of the device, and avoids accidental touching of manhole doors and safety accidents through the limit structure.
Smart Images
Figure CN222595898U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of iron and steel metallurgy, and in particular relates to a limitable hoisting manhole door device. Background Art
[0002] As we all know, manhole refers to the opening structure used for personnel to enter and exit equipment for installation, maintenance and safety inspection. Manhole door, also known as manhole cover, is the general term for the cover plate with sealing performance installed on the manhole and its fixing accessories. Manhole door and its accessories are usually made of hot-rolled carbon steel or the same material as the surrounding of the ship's air door, and are heavy. Manhole doors are mostly used in the field of steel metallurgy on flues, dust collectors, medium pipelines with larger pipe diameters, boxes and other equipment.
[0003] At present, in the traditional hoisting manhole door, the manhole door is fixed to the hoisting arm, and the hoisting arm supports the weight of the manhole door. The staff can perform simple push and pull operations to open and close the manhole door.
[0004] However, it was found during use that the manhole door of the above structure still has the following defects:
[0005] Firstly, the manhole door is heavy, and the supporting components may be deformed after long-term use, resulting in inconsistency between the manhole door and the manhole interface, which may hinder the normal operation of the factory and even cause safety accidents. In addition, since the components are fixedly connected, the replacement cost is high.
[0006] Secondly, since the traditional hoisting manhole door uses the rotation of the hoisting arm to achieve the opening and closing operation, the angle of the manhole door cannot be fixed after it is opened, and it is easy to accidentally touch the manhole door, causing the manhole door to collide or workers to be injured, and the safety is relatively low. Utility Model Content
[0007] The purpose of the utility model is to provide a limitable hoisting manhole door device to solve the technical problems of deformation of supporting components in traditional hoisting manhole doors, high replacement cost and inability to fix the angle of the manhole door after opening, as mentioned in the above background technology.
[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0009] A limitable hoisting manhole door device comprises a manhole door located on a vertical plane, and also comprises an arc-shaped hoisting support, the lower end of the hoisting support is connected with a fixed bracket through a bearing, and is used to support the weight of the manhole door, so that the manhole door can be suspended and rotated, and at the same time, the friction and resistance encountered by the hoisting support during rotation are reduced, the stability and stability of the device are improved, and it is convenient to replace it after deformation; the upper end of the hoisting support is connected with a hook lock; a door nose is fixedly installed on the top of the manhole door, and the hook lock is connected to the manhole door through the door nose; a limiting structure is arranged on the fixed bracket; the limiting structure comprises a limiting plate fixed to the lower end of the hoisting support, a vertical through hole is opened on the limiting plate, and a limiting groove is opened on the upper surface of the fixed bracket, and the limiting rod can pass through the through hole from top to bottom and then be inserted into the limiting groove, and is used to fix the manhole door at a specific angle after it is opened, so as to improve the simplicity of subsequent operation and avoid accidental touch causing collision of the manhole door or injury to workers.
[0010] Preferably, the hook lock is made of steel bars with a diameter of 2mm to 8mm, which provides greater durability and load-bearing capacity; the lower end of the hook lock is bent into a hook, and the hook passes through the door nose and is connected to the manhole door; the upper end of the hook lock is a connecting rod with a threaded outer wall, and the connecting rod is fixedly connected to the lower end of the hook and the upper end of the bolt of the hook lock on the lifting support with a nut, so that the hook lock can be replaced in time after deformation during long-term use, thereby reducing the loss cost.
[0011] Preferably, the lifting support is made of steel bars with a diameter of 5 mm to 10 mm to provide greater durability and load-bearing capacity; the contact surface between the top of the lifting support and the nut is flat, making it more firmly fixed to the hook lock.
[0012] Preferably, it also includes a flange base, and the fixed bracket includes an upper arm plate and a lower arm plate arranged horizontally, and the upper arm plate and the lower arm plate are connected by a vertical side wall. The structure is relatively simple and the installation is usually relatively easy; the fixed bracket is welded to the flange base.
[0013] Preferably, the rotation angle of the hoisting support is 0° to 180°, which has strong adaptability and can meet various complex engineering and assembly requirements.
[0014] Preferably, the lifting support and the fixed support are provided with two connections, the first connection is located at the upper arm plate of the fixed support, and the second connection is located at the lower arm plate of the fixed support, which is used to improve the structural stability of the device and can provide better fixed support capability.
[0015] Preferably, two fixing gaskets are also included, the first fixing gasket is closely attached to the lower surface of the upper arm plate of the fixing bracket, and the second fixing gasket is closely attached to the upper surface of the lower arm plate of the fixing bracket, so as to further improve the structural stability and supporting capacity of the device.
[0016] Preferably, the limiting plate is provided with a plurality of through holes in the vertical direction, and the plurality of through holes are located on the same circumference; the upper surface of the fixing bracket is provided with a plurality of limiting grooves, and the plurality of limiting grooves are located on the same circumference, for ensuring that the manhole door can be limited to a plurality of angles after being opened.
[0017] Preferably, the distance between the lower end of the hook lock and the floor is greater than the diameter of the manhole door, which is used to avoid wear and friction and prevent the manhole door from getting stuck, causing damage to the device or destroying the ground.
[0018] Preferably, it also includes a porous flange, which is vertically welded to the side of the flange base. When the manhole door is closed, the manhole door and the porous flange are fixed with bolts to ensure the sealing and stability of the manhole door when it is closed.
[0019] Compared with the prior art, the beneficial effects of the utility model are:
[0020] The utility model effectively solves the problems of deformation of supporting components of traditional hoisting manhole door devices and high replacement cost by arranging a hoisting support and a hook lock; the hoisting support is made of steel bars with a diameter of 5mm to 10mm, which is used to provide strong durability and load-bearing capacity; the lower end of the hoisting support is connected through a bearing and a fixed bracket, which is used to support the weight of the manhole door, so that the manhole door can be suspended and rotated, while reducing the friction and resistance of the hoisting support during rotation, improving the stability and stability of the device, and facilitating replacement after deformation; the upper end of the hoisting support is connected with the hook lock; the hook lock is made of steel bars with a diameter of 2mm to 8mm, which provides strong durability and load-bearing capacity; the lower end of the hook lock is bent into a hook, and the hook passes through the door nose and is connected to the manhole door; the upper end of the hook lock is a connecting rod with a thread on the outer wall, and the connecting rod is fixedly connected to the lower end of the hook and the upper end of the bolt of the hook lock on the hoisting support with a nut, which is convenient for timely replacement of the hook lock after deformation occurs during long-term use, thereby reducing loss costs.
[0021] The utility model effectively solves the problem that the traditional hoisting manhole door cannot be fixed at a fixed angle after opening, which is easy to cause accidental touch and cause the manhole door to collide or workers to be injured by setting a limiting structure; the limiting structure is arranged on the bracket, and the limiting structure includes a limiting plate fixed at the lower end of the hoisting support, a vertical through hole is opened on the limiting plate, and a limiting groove is opened on the upper surface of the fixed bracket. The limiting rod can pass through the through hole from top to bottom and then be inserted into the limiting groove, which is used to fix the manhole door at a specific angle after opening, thereby improving the simplicity of subsequent operation and avoiding accidental touch and cause the manhole door to collide or workers to be injured; a plurality of vertical through holes are opened on the limiting plate, and the plurality of through holes are located on the same circumference; a plurality of limiting grooves are opened on the upper surface of the fixed bracket, and the plurality of limiting grooves are located on the same circumference, so as to ensure that the manhole door can be limited to a plurality of angles after opening. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a front view of a preferred embodiment of the utility model;
[0023] Figure 2 It is a left view of a preferred embodiment of the utility model;
[0024] Figure 3 It is a top view of a preferred embodiment of the utility model.
[0025] In the figure: 1. Lifting support; 2. Hook lock; 3. Door nose; 4. Limiting structure; 5. Fixed bracket; 6. Manhole door; 7. Flange base; 8. Multi-hole flange. DETAILED DESCRIPTION
[0026] 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 of 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.
[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0028] In the description of the invention of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the invention of the utility model and simplifying the description, rather than indicating or implying 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 invention of the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention of the present utility model, unless otherwise specified, the meaning of "multiple" is two or more.
[0029] In the description of the invention of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 invention of the utility model can be understood according to specific circumstances.
[0030] like Figure 1-Figure 3 As shown:
[0031] First embodiment: A limitable hoisting manhole door 6 device, including a manhole door 6 located on a vertical plane, and also includes an arc-shaped hoisting support 1. In order to support the weight of the manhole door 6, the manhole door 6 can be suspended and rotated, and at the same time reduce the friction and resistance of the hoisting support 1 during rotation, improve the stability and stability of the device, and facilitate replacement after deformation. The lower end of the hoisting support 1 is connected to the fixed bracket 5 through a bearing; the upper end of the hoisting support 1 is connected to the hook lock 2; the top of the manhole door 6 is fixedly installed A door nose 3 is installed, and the hook lock 2 is connected to the manhole door 6 through the door nose 3; in order to improve the convenience of subsequent operations and avoid accidental touches that may cause collisions with the manhole door 6 or injuries to workers, a limiting structure 4 is provided on the fixed bracket 5; the limiting structure 4 includes a limiting plate fixed to the lower end of the lifting support 1, a vertical through hole is provided on the limiting plate, and a limiting groove is provided on the upper surface of the fixed bracket 5, and the limiting rod can pass through the through hole from top to bottom and then be inserted into the limiting groove, which is used to fix the manhole door 6 at a specific angle after it is opened.
[0032] Second embodiment: On the basis of the above-mentioned first embodiment, in order to provide stronger durability and bearing capacity, and at the same time be able to adjust the height of the manhole door 6, so as to facilitate timely replacement of the hook lock 2 after deformation due to long-term use and reduce the loss cost, the hook lock 2 is made of steel bars with a diameter of 2mm to 8mm; in order to facilitate timely replacement of the hook lock 2 after deformation due to long-term use and reduce the loss cost, the lower end of the hook lock 2 is bent into a hook, and the hook passes through the door nose 3 to be connected to the manhole door 6; the upper end of the hook lock 2 is a connecting rod with a thread on the outer wall, and the connecting rod is fixedly connected to the lower end of the hook and the upper end of the bolt of the hook lock 2 on the lifting support 1 with a nut.
[0033] The third embodiment: On the basis of the above-mentioned second embodiment, in order to provide stronger durability and load-bearing capacity, the lifting support 1 is made of steel bars with a diameter of 5mm to 10mm; in order to fix the hook lock 2 more firmly, the contact surface between the top of the lifting support 1 and the nut is a plane.
[0034] Fourth embodiment: Based on the above-mentioned first embodiment, it also includes a flange base 7, and the fixed bracket 5 includes an upper arm plate and a lower arm plate arranged horizontally, and the upper arm plate and the lower arm plate are connected by a vertical side wall. The structure is relatively simple and the installation is usually relatively easy; the fixed bracket 5 is welded to the flange base 7.
[0035] Fifth embodiment: Based on the first embodiment, in order to have a wider application range and meet various complex engineering and assembly requirements, the rotation angle of the lifting support 1 is 0° to 180°.
[0036] Sixth embodiment: On the basis of the above-mentioned fourth embodiment, in order to achieve higher structural stability and provide better fixed support capability, the lifting support 1 and the fixed bracket 5 are provided with two connections, the first connection is located at the upper arm plate of the fixed bracket 5, and the second connection is located at the lower arm plate of the fixed bracket 5.
[0037] Seventh embodiment: On the basis of the sixth embodiment, in order to further improve the structural stability and fixed support capacity of the device, two fixing pads are further included, the first fixing pad is closely attached to the lower surface of the upper arm plate of the fixing bracket 5, and the second fixing pad is closely attached to the upper surface of the lower arm plate of the fixing bracket 5.
[0038] Eighth embodiment: On the basis of the sixth embodiment, in order to ensure that the manhole door 6 can be limited to a number of angles after opening, the limiting plate is provided with a number of through holes in the vertical direction, and the number of through holes are located on the same circumference; the upper surface of the fixed bracket 5 is provided with a number of limiting grooves, and the number of limiting grooves are located on the same circle.
[0039] Ninth embodiment: Based on the above-mentioned first embodiment, in order to avoid wear and friction and prevent the manhole door 6 from getting stuck, causing damage to the device or damaging the ground, the distance between the lower end of the hook lock 2 and the floor is greater than the diameter of the manhole door 6.
[0040] The tenth embodiment: On the basis of the above-mentioned first embodiment, in order to ensure the sealing and stability of the manhole door 6 when it is closed, it also includes a porous flange 8, and the porous flange 8 is vertically welded to the side of the flange base 7. When the manhole door 6 is closed, the manhole door 6 and the porous flange 8 are fixed with bolts.
[0041] In the utility model, the arc-shaped lifting support 1 is made of a steel bar with a diameter of 5mm to 10mm, the lower end of which is connected to the fixed bracket 5 through a bearing, and the upper end is connected to the hook lock 2, which is used to support the weight of the manhole door 6 so that the manhole door 6 can be suspended and rotated, while reducing the friction and resistance encountered by the lifting support 1 during rotation, improving the stability and stability of the device, and facilitating replacement after deformation; it also includes a flange base 7, and the fixed bracket 5 includes a horizontally arranged upper arm plate and a lower arm plate, and the upper arm plate and the lower arm plate are connected by a vertical side wall. The structure is relatively simple and the installation is usually relatively easy; the fixed bracket 5 is welded to the flange base 7. A limiting structure 4 is provided on the fixed bracket 5; the limiting structure 4 includes a limiting plate fixed to the lower end of the lifting support 1, a through hole in the vertical direction is provided on the limiting plate, and a limiting groove is provided on the upper surface of the fixed bracket 5. The limiting rod can pass through the through hole from top to bottom and then be inserted into the limiting groove, which is used to fix the manhole door 6 at a specific angle after it is opened, thereby improving the simplicity of subsequent operation and avoiding accidental touch that may cause the manhole door 6 to collide or injure workers; a plurality of through holes in the vertical direction are provided on the limiting plate, and the plurality of through holes are located on the same circumference; a plurality of limiting grooves are provided on the upper surface of the fixed bracket 5, and the plurality of limiting grooves are located on the same circumference, so as to ensure that the manhole door 6 can be limited to a plurality of angles after it is opened. Angle, also includes a porous flange 8, the porous flange 8 is vertically welded to the side of the flange base 7, when the manhole door 6 is closed, the manhole door 6 and the porous flange 8 are fixed with bolts, which are used to ensure the sealing and stability of the manhole door 6 when it is closed; the hook lock 2 is made of steel bars with a diameter of 2mm to 8mm, providing strong durability and bearing capacity; the lower end of the hook lock 2 is bent into a hook, and the hook passes through the door nose 3 to be connected to the manhole door 6; the upper end of the hook lock 2 is a connecting rod with a thread on the outer wall, and the connecting rod is fixedly connected to the lifting support 1 with a nut. The lower end of the hook of the hook lock 2 and the upper end of the bolt are convenient for timely replacement of the hook lock 2 after deformation during long-term use, thereby reducing the loss cost.
[0042] Working principle:
[0043] When the manhole door 6 is in a closed state, bolts are used to fix the manhole door 6 and the porous flange 8 to ensure the sealing and stability of the manhole door 6 when it is closed; when the operator needs to open the manhole door 6, a wrench is used to remove all the bolts connecting the manhole door 6 and the flange. After removal, the operator stands on the left side of the manhole door 6 and uses the handle on the manhole door 6 to pull the manhole door 6 to the right. The lower end of the lifting support 1 is connected to the fixed bracket 5 through a bearing, combined with the hook lock 2 and the door nose 3, it can support the weight of the manhole door 6, so that the manhole door 6 can be hung and rotated; when the manhole door 6 is opened to the required angle, the operator can use the limit joint The structure 4 easily fixes the manhole door 6 at this angle. The limiting structure 4 includes a limiting plate fixed at the lower end of the lifting support 1, a vertical through hole is opened on the limiting plate, and a limiting groove is opened on the upper surface of the fixed bracket 5. The limiting rod can pass through the through hole from top to bottom and then be inserted into the limiting groove. It is used to fix the manhole door at a specific angle after it is opened, which is used to improve the simplicity of subsequent operation and avoid accidental touch that may cause the manhole door 6 to collide or workers to be injured. After the work is completed, the personnel open the limiting structure 4, and with the support of the lifting support 1, the manhole door 6 is easily pushed into the manhole, and then all bolts of the manhole door 6 and the porous flange 8 are installed and tightened.
[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A positionable hoisting manhole door device, comprising a manhole door (6) located on a vertical surface, characterized in that: It also includes an arc-shaped lifting support (1), the lower end of which is connected to a fixed bracket (5) via a bearing; the upper end of the lifting support (1) is connected to a hook lock (2); a door nose (3) is fixedly installed on the top of the manhole door (6), and the hook lock (2) is connected to the manhole door (6) via the door nose (3); a limiting structure (4) is arranged on the fixed bracket (5); the limiting structure (4) includes a limiting plate fixed to the lower end of the lifting support (1), a vertical through hole is provided on the limiting plate, and a limiting groove is provided on the upper surface of the fixed bracket (5), and a limiting rod can pass through the through hole from top to bottom and then be inserted into the limiting groove.
2. A position-limitable hoisting manhole door device according to claim 1, characterized in that: The hook lock (2) is made of a steel bar with a diameter of 2 mm to 8 mm. The lower end of the hook lock (2) is bent into a hook, and the hook passes through the door nose (3) and is connected to the manhole door (6); the upper end of the hook lock (2) is a connecting rod with a threaded outer wall, and the connecting rod is fixedly connected to the lifting support (1) with a nut.
3. A position-limitable hoisting manhole door device according to claim 2, characterized in that: The hoisting support (1) is made of steel bars with a diameter of 5 mm to 10 mm, and the contact surface between the top end of the hoisting support (1) and the nut is a flat surface.
4. A position-limitable hoisting manhole door device according to claim 1, characterized in that: It also includes a flange base (7), the fixed bracket (5) includes an upper arm plate and a lower arm plate arranged horizontally, the upper arm plate and the lower arm plate are connected via a vertical side wall, and the fixed bracket (5) is welded to the flange base (7).
5. The position-limitable hoisting manhole door device according to claim 1, characterized in that: The rotation angle of the lifting support (1) is 0° to 180°.
6. A position-limitable hoisting manhole door device according to claim 4, characterized in that: The hoisting support (1) and the fixed support (5) are provided with two connection points, the first connection point is located at the upper arm plate of the fixed support (5), and the second connection point is located at the lower arm plate of the fixed support (5).
7. A position-limitable hoisting manhole door device according to claim 6, characterized in that: It also includes two fixing gaskets, wherein the first fixing gasket is in close contact with the lower surface of the upper arm plate of the fixing bracket (5), and the second fixing gasket is in close contact with the upper surface of the lower arm plate of the fixing bracket (5).
8. The position-limitable hoisting manhole door device according to claim 6, characterized in that: The limiting plate is provided with a plurality of through holes in a vertical direction, and the plurality of through holes are located on the same circumference; the upper surface of the fixing bracket (5) is provided with a plurality of limiting grooves, and the plurality of limiting grooves are located on the same circumference.
9. The position-limitable hoisting manhole door device according to claim 1, characterized in that: The distance between the lower end of the hook lock (2) and the floor is greater than the diameter of the manhole door (6).
10. The position-limitable hoisting manhole door device according to claim 1, characterized in that: It also includes a porous flange (8), which is vertically welded to the side of the flange base (7). When the manhole door (6) is closed, bolts are used to fix the manhole door and the porous flange (8).