Adjustable manhole cover opening power assisting device

Abstract

The utility model relates to the technical field of manholes, and discloses an adjustable manhole cover opening power assisting device which comprises a manhole cover and a manhole flange installed on a reaction kettle, upper lug plates are symmetrically arranged on the surface of the manhole cover, two cover opening power assisting assemblies are symmetrically arranged on the surface of the manhole flange, and the upper lug plates and the two cover opening power assisting assemblies are symmetrically arranged on the surface of the manhole flange. And the two upper lug plates are located between the two cover opening assisting assemblies, a rotating shaft is installed between the two upper lug plates, and the two ends of the rotating shaft penetrate through the two upper lug plates correspondingly and extend into the cover opening assisting assemblies. According to the adjustable manhole cover opening power assisting device, the cover opening power assisting assembly is arranged, when an operator opens a manhole cover, a torsional spring releases elastic force, the torsional spring drives a rotating shaft to rotate, the rotating shaft is connected with the manhole cover through a mounting plate and an upper lug plate, the manhole cover is convenient to open, the manhole cover slowly falls under the action of the torsional spring, and the operator is prevented from being pinched.

Description

Technical Field

[0001] The utility model relates to the technical field of manholes, in particular to an adjustable manhole cover opening assisting device. Background Technique

[0002] Reaction vessels are widely used in the fields of petroleum, chemical industry, rubber, pesticides, dyes, medicine, and food. They are pressure vessels used to complete processes such as vulcanization, nitrification, hydrogenation, alkylation, polymerization, and condensation. For example, reactors, reaction kettles, decomposition kettles, polymerization kettles, etc.; the materials are generally carbon manganese steel, stainless steel, zirconium, nickel-based alloys, and other composite materials. Considering safety inspections, manholes are required to be opened on reaction vessels, which are opening structures for personnel to enter and exit the equipment for installation, maintenance, and safety inspections, mainly composed of short cylinder sections or short pipes, flanges, and manhole covers with handles.

[0003] During equipment maintenance, since the manhole cover is heavy, it is not easy for operators to open it. If it slips accidentally during the process of opening the manhole cover, it will pinch the operator and cause injury to the operator. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides an adjustable manhole cover opening assisting device, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: an adjustable manhole cover opening assisting device, comprising: a manhole cover and a manhole flange installed on the reaction vessel. Upper ear plates are symmetrically arranged on the surface of the manhole cover. Two opening assisting components are symmetrically arranged on the surface of the manhole flange, and the two upper ear plates are located between the two opening assisting components. A rotating shaft is installed between the two upper ear plates, and both ends of the rotating shaft pass through the two upper ear plates and extend into the interior of the opening assisting components;

[0006] The opening assisting component includes a spring seat and a torsion spring. Limiting grooves are opened at both ends of the rotating shaft. The spring seat is connected to the surface of the manhole flange. The torsion spring is sleeved on the surface of the rotating shaft, and one end of the torsion spring is connected to the inner wall of the spring seat, and the other end of the torsion spring is connected to the inner wall of the limiting groove.

[0007] Preferably, through grooves are opened on the surfaces of the two upper ear plates, and the inner walls of the through grooves are connected to the surface of the rotating shaft. Mounting plates are symmetrically connected to the surface of the rotating shaft. A plurality of first bolts are arranged on the surface of the mounting plate, and the mounting plate is installed on the surface of the upper ear plate through the first bolts.

[0008] Preferably, the spring seat includes a fixing plate. The fixing plate is connected to the surface of the manhole flange. A fixing sleeve is integrally formed and connected to the surface of the fixing plate. The torsion spring is located inside the fixing sleeve. A limiting column is connected to the surface of the fixing plate, and one end of the limiting column is connected to one end of the torsion spring.

[0009] Preferably, a protective cover is mounted on the surface of the fixing plate, and the fixing sleeve is located inside the protective cover.

[0010] Preferably, a connecting plate is integrally formed and connected to the surface of the protective cover. A plurality of second bolts are mounted on the connecting plate. Threaded grooves are formed on the surface of the fixing plate. One end of the second bolt is threadedly connected to the inner wall of the threaded groove.

[0011] Preferably, one end of the fixing plate is welded to the surface of the manhole flange, and one end of the upper ear plate is welded to the surface of the manhole cover.

[0012] Preferably, the spring seat, the protective cover and the connecting plate are all made of stainless steel.

[0013] Preferably, a handle is mounted on the top of the manhole cover.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] 1. For the adjustable manhole cover opening assistance device, by setting the opening assistance component, when the operator opens the manhole cover, the torsion spring releases elastic force. The torsion spring drives the rotation shaft to rotate. The rotation shaft is connected to the manhole cover through the mounting plate and the upper ear plate. The manhole cover is convenient to open, and under the action of the torsion spring, the manhole cover slowly drops, avoiding pinching the operator.

[0016] 2. For the adjustable manhole cover opening assistance device, by setting the protective cover, the protective cover protects the torsion spring in the fixing sleeve, prevents impurities from entering the fixing sleeve, and prevents the torsion spring from being worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic structural diagram of the present utility model at the position of the mounting plate;

[0019] Figure 3 is a schematic side-sectional structural diagram of the opening assistance component of the present utility model;

[0020] Figure 4 is a schematic structural diagram of the present utility model at the position of the threaded groove;

[0021] Figure 5 is a schematic structural diagram of the present utility model at the position of the protective cover.

[0022] In the figure: 1. Manhole cover; 2. Manhole flange; 3. Upper ear plate; 4. Opening assistance component; 41. Spring seat; 411. Fixed plate; 412. Fixed sleeve; 42. Torsion spring; 5. Rotating shaft; 6. Protective cover; 7. Connecting plate; 8. First bolt; 9. Thread groove; 10. Handle; 11. Mounting plate; 12. Second bolt. Detailed implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-5 , an adjustable manhole opening assistance device, comprising: a manhole cover 1 and a manhole flange 2 installed on the reactor. Upper ear plates 3 are symmetrically arranged on the surface of the manhole cover 1. Two opening assistance components 4 are symmetrically arranged on the surface of the manhole flange 2, and the two upper ear plates 3 are located between the two opening assistance components 4. A rotating shaft 5 is installed between the two upper ear plates 3. Both ends of the rotating shaft 5 pass through the two upper ear plates 3 and extend into the interior of the opening assistance component 4;

[0025] The opening assistance component 4 includes a spring seat 41 and a torsion spring 42. Limiting grooves are opened at both ends of the rotating shaft 5. The spring seat 41 is connected to the surface of the manhole flange 2. The torsion spring 42 is sleeved on the surface of the rotating shaft 5, and one end of the torsion spring 42 is connected to the inner wall of the spring seat 41, and the other end of the torsion spring 42 is connected to the inner wall of the limiting groove.

[0026] Please refer to Figure 2 , through grooves are opened on the surfaces of the two upper ear plates 3, and the inner walls of the through grooves are connected to the surface of the rotating shaft 5. Mounting plates 11 are symmetrically connected to the surface of the rotating shaft 5. A plurality of first bolts 8 are arranged on the surface of the mounting plate 11. The mounting plate 11 is installed on the surface of the upper ear plate 3 through the first bolts 8.

[0027] Please refer to Figure 3 , the spring seat 41 includes a fixed plate 411. The fixed plate 411 is connected to the surface of the manhole flange 2. A fixed sleeve 412 is integrally formed and connected to the surface of the fixed plate 411. The torsion spring 42 is located inside the fixed sleeve 412. A limiting column is connected to the surface of the fixed plate 411, and one end of the limiting column is connected to one end of the torsion spring 42.

[0028] Please refer to Figures 4-5, a protective cover 6 is mounted on the surface of the fixing plate 411. The fixing sleeve 412 is located inside the protective cover 6. The protective cover 6 protects the torsion spring 42 inside the fixing sleeve 412, preventing impurities from entering the fixing sleeve 412 and preventing the torsion spring 42 from being worn.

[0029] A connecting plate 7 is integrally formed and connected to the surface of the protective cover 6. A plurality of second bolts 12 are mounted on the connecting plate 7. Threaded grooves 9 are formed on the surface of the fixing plate 411. One end of the second bolt 12 is threadedly connected to the inner wall of the threaded groove 9.

[0030] One end of the fixing plate 411 is welded to the surface of the manhole flange 2, and one end of the upper ear plate 3 is welded to the surface of the manhole cover 1. The spring seat 41, the protective cover 6 and the connecting plate 7 are all made of stainless steel. A handle 10 is mounted on the top of the manhole cover 1, and the handle 10 facilitates the operator to hold and drive the manhole cover 1 to open and close.

[0031] The fixing plate 411 of the spring seat 41 is welded to the manhole flange 2, and the upper ear plate 3 is welded to the manhole cover 1. The mounting plate connected to the rotating shaft 5 is attached to the upper ear plate 3, and the mounting plate is fixed with the first bolt 8. When the manhole cover 1 is opened to the open position, the torsion spring 42 is inserted into the fixing sleeve 412. The torsion spring 42 is sleeved on the surface of the rotating shaft 5. One end of the torsion spring 42 is clamped in the limiting groove of the rotating shaft 5. When the manhole cover 1 is closed, under the action of the spring, the manhole cover 1 slowly falls. When the manhole cover 1 is opened, the spring releases elastic force, and the manhole cover 1 can be easily opened. After debugging, the protective cover 6 is installed, and the protective cover 6 is installed on the spring seat 41 with the second bolt 8.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable manhole cover opening assisting device, characterized in that: include: A manhole cover (1) and a manhole flange (2) mounted on a reactor, wherein the surface of the manhole cover (1) is symmetrically provided with an upper ear plate (3), the surface of the manhole flange (2) is symmetrically provided with two cover-opening assisting components (4), and the two upper ear plates (3) are located between the two cover-opening assisting components (4), a rotating shaft (5) is mounted between the two upper ear plates (3), and two ends of the rotating shaft (5) respectively pass through the two upper ear plates (3) and extend to the interior of the cover-opening assisting components (4); The cover opening assisting assembly (4) comprises a spring seat (41) and a torsion spring (42); both ends of the rotating shaft (5) are provided with limiting grooves; the spring seat (41) is connected to the surface of the manhole flange (2); the torsion spring (42) is sleeved on the surface of the rotating shaft (5); one end of the torsion spring (42) is connected to the inner wall of the spring seat (41); and the other end of the torsion spring (42) is connected to the inner wall of the limiting groove.

2. The adjustable manhole cover opening assisting device according to claim 1, characterized in that: The surfaces of the two upper ear plates (3) are provided with through grooves, and the inner walls of the through grooves are connected to the surface of the rotating shaft (5); the surface of the rotating shaft (5) is symmetrically connected with a mounting plate (11); the surface of the mounting plate (11) is provided with a plurality of first bolts (8); and the mounting plate (11) is mounted to the surface of the upper ear plate (3) via the first bolts (8).

3. The adjustable manhole cover opening assisting device according to claim 1, characterized in that: The spring seat (41) comprises a fixing plate (411), the fixing plate (411) is connected to the surface of the manhole flange (2), the surface of the fixing plate (411) is integrally formed with a fixing sleeve (412), the torsion spring (42) is located inside the fixing sleeve (412), the surface of the fixing plate (411) is connected to a limiting column, and one end of the limiting column is connected to one end of the torsion spring (42).

4. The adjustable manhole cover opening assisting device according to claim 3, characterized in that: A protective cover (6) is installed on the surface of the fixing plate (411), and the fixing sleeve (412) is located inside the protective cover (6).

5. The adjustable manhole cover opening assisting device according to claim 4, characterized in that: The surface of the protective cover (6) is integrally formed with a connecting plate (7), a plurality of second bolts (12) are mounted on the connecting plate (7), a thread groove (9) is provided on the surface of the fixing plate (411), and one end of the second bolt (12) is threadedly connected to the inner wall of the thread groove (9).

6. The adjustable manhole cover opening assisting device according to claim 3, characterized in that: One end of the fixing plate (411) is welded to the surface of the manhole flange (2), and one end of the upper ear plate (3) is welded to the surface of the manhole cover (1).

7. The adjustable manhole cover opening assisting device according to claim 5, characterized in that: The spring seat (41), the protective cover (6) and the connecting plate (7) are all made of stainless steel.

8. The adjustable manhole cover opening assisting device according to claim 1, characterized in that: A handle (10) is installed on the top of the manhole cover (1).

Images