Cover plate lifting device suitable for sewage treatment plant

Abstract

The utility model provides a cover plate hoisting device suitable for a sewage treatment plant, which belongs to the technical field of sewage treatment cover plate hoisting and comprises a portal frame, the portal frame comprises supporting frames on two sides and a connecting platform used for connecting the tops of the supporting frames, and a pair of shear type telescopic arms is hinged below the connecting platform. A shear type telescopic arm is arranged on the connecting platform, a cross rod is hinged to the bottom of the shear type telescopic arm, a suction cup is fixedly installed below the cross rod, the suction cup is used for tightly sucking a cover plate, a driving device is fixedly installed above the connecting platform corresponding to the shear type telescopic arm, and the driving device is used for driving the shear type telescopic arm to contract so as to hoist the cover plate. According to the scheme, the four corners of the cover plate are tightly sucked through the suction cups in a negative pressure mode, the firmness and stability of suction of the cover plate are guaranteed, the electric hoist is started through the electric remote controller to contract the shear type telescopic arm, the cover plate is lifted, the portal frame is pushed to move, and therefore the cover plate is moved away, operation convenience and safety are guaranteed, and meanwhile manpower is effectively saved.

Description

Technical Field

[0001] This utility model relates to the field of sewage treatment cover lifting technology, specifically to a cover lifting device suitable for sewage treatment plants. Background Technology

[0002] With the rapid development of cities and the scarcity of land resources in my country, the requirements for the wastewater treatment industry are becoming increasingly stringent. Semi-underground and fully underground wastewater treatment plants, which utilize land for multiple functions, represent a trend in the industry's development. However, current operational experience in these plants is limited. One wastewater treatment plant is semi-underground, with all equipment located below the tanks. In the event of equipment failure, maintenance personnel must open the cover to lift the equipment out for repair or descend into the tank for maintenance (e.g., ...). Figure 5 (As shown). To ensure the safety of the sewage treatment plant cover, the cover is made of 304 stainless steel, with a single cover area of ​​approximately 6 square meters and a thickness of 5 mm, making it relatively heavy. The following problems exist during the opening of the cover: 1. It requires four maintenance personnel to lift the cover; 2. Opening the cover manually poses a safety hazard, with a risk of personnel falling. Utility Model Content

[0003] The purpose of this invention is to provide a cover plate lifting device suitable for sewage treatment plants, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A cover lifting device suitable for sewage treatment plants includes: a gantry frame, the gantry frame including support frames on both sides and a connecting platform for connecting the top of the support frames, a pair of scissor arms hinged below the connecting platform, a crossbar hinged to the bottom of the scissor arms, a suction cup fixedly installed below the crossbar for gripping the cover, and a driving device fixedly installed above the connecting platform corresponding to the scissor arms for driving the scissor arms to retract, thereby lifting the cover.

[0006] Preferably, a first lug is fixedly installed under the connecting platform, a second lug is fixedly installed in the middle of the top surface of the crossbar, the top of the scissor telescopic arm is hinged to the connecting platform through the first lug, and the bottom of the scissor telescopic arm is hinged to the crossbar through the second lug.

[0007] Preferably, the scissor telescopic arm has a double-layer structure, and its corresponding hinge points are hinged using hinge rods. The central hinge rod of the scissor telescopic arm has clearance holes, and the lug and the connecting platform have through holes at the corresponding clearance hole positions. The through holes and clearance holes are vertically connected in a straight line.

[0008] Preferably, a linear bearing is fixedly installed inside the through hole.

[0009] Preferably, the driving device is an electric hoist, which is connected to the second lug by a rope passing through the through hole and the clearance hole in sequence.

[0010] Preferably, the suction cup is a negative pressure suction cup, and an air intake valve and an air release valve are fixedly installed on the top of the crossbar. Both the air intake valve and the air release valve are connected to the negative pressure suction cup through pipes.

[0011] Preferably, the suction cup is an electromagnetic suction cup.

[0012] Preferably, the support frame is equipped with casters on both sides of its bottom for easy movement.

[0013] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0014] This solution involves installing an electric hoist, a scissor-type telescopic arm, and suction cups on a gantry frame. The suction cups use negative pressure to firmly hold the cover plate at its four corners, ensuring the cover plate is securely and stably lifted. The electric hoist is activated via a remote control to retract the scissor-type telescopic arm, lifting the cover plate and moving the gantry frame to remove it. The scissor-type telescopic arm effectively prevents significant swaying of the cover plate during lifting and movement. This solution ensures convenient and safe operation while effectively saving manpower; only one person is needed for actual operation, with another person responsible for safety supervision. Attached Figure Description

[0015] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 Enlarged view of A in the middle;

[0018] Figure 3 for Figure 1 Enlarged view of B in the middle;

[0019] Figure 4 This is a schematic diagram of a scissor boom.

[0020] Figure 5 This is a schematic diagram of the wastewater treatment plant environment.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Gantry frame; 11. Support frame; 12. Connecting platform; 13. Casters; 14. Through hole; 15. Linear bearing; 2. Drive unit; 21. Rope; 3. Scissor boom; 31. Center hinge rod; 32. Clearance hole; 4. Crossbar; 41. Second lug; 42. Suction cup; 43. Suction valve; 44. Release valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] This solution utilizes a manual or electric vacuum generator (such as patent CN202768320U) to lift the cover plate. A one-way valve draws the suction cup 42 to negative pressure, firmly gripping the cover plate. The power supply to the drive unit 2 is connected, and then the drive unit 2, via rope 21, drives the scissor-type telescopic arm 3 to lift the cover plate using a jog remote control. Only two people are required for the entire lifting process: one to operate and the other to supervise safety. After the cover plate is lifted, the gantry frame 1 is moved and rope 21 is loosened. The sealed ball valve is opened to restore the suction cup 42 to normal pressure, allowing the cover plate to rotate to the ground. Maintenance personnel can then enter the pool for repairs or remove the equipment requiring maintenance. The entire cover plate lifting process eliminates the need for manual handling, significantly reducing labor costs while ensuring ease of operation and safety.

[0025] After introducing the basic principles of this utility model, various non-limiting embodiments of this utility model are described in detail below. Any quantity of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning.

[0026] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0027] Example 1

[0028] A cover lifting device suitable for sewage treatment plants, such as Figure 1-4As shown, the system includes a gantry frame 1, which comprises triangular support frames 11 on both sides and a connecting platform 12 for connecting the top of the support frames 11. A pair of drive devices 2 are fixedly installed on both sides of the top of the connecting platform 12. In this embodiment, the drive device 2 is an electric hoist with a rope 21, which is a steel cable. The electric hoist is electrically connected to a jog remote control (not shown in the figure), which controls the tightening and loosening of the rope 21. Universal wheels 13 are installed at the four corners of the bottom of the gantry frame 1 for easy movement during use.

[0029] like Figure 1 and Figure 3 As shown, a pair of lugs (not shown in the figure) are welded to the two sides below the connecting platform 12 corresponding to the positions of the rope 21. The connecting platform 12 is hinged to the top of the scissor telescopic arm 3 through the lugs. The bottom of the scissor telescopic arm 3 is provided with a crossbar 4. A second lug 41 is welded to the middle of the top surface of the crossbar 4. The crossbar 4 is hinged to the bottom of the telescopic arm through the second lug 41, so that the length direction of the crossbar 4 is perpendicular to the length direction of the connecting platform 12 in the plane.

[0030] like Figure 1-4 As shown, the scissor telescopic boom 3 has a double-layer structure. The hinge points on both sides and the middle are hinged by hinge rods. The central hinge rod 31 of the scissor telescopic boom 3 has clearance holes 32 in the vertical direction. The lug 1 and the connecting platform 12 have through holes 14 at the positions corresponding to the clearance holes 32. The through holes 14 and the clearance holes 32 are vertically connected in a straight line, which facilitates the passage of the rope 21 and its final fixed connection with the lug 2 41, thereby controlling the extension and retraction of the scissor telescopic boom 3 and driving the crossbar 4 to rise and fall.

[0031] like Figure 2 As shown, a linear bearing 15 is also fixedly installed inside the through hole 14. The rope 21 passes through the linear bearing 15 and is connected to the electric hoist. The linear bearing 15 is used to correct the friction between the rope 21 and the through hole 14 during the contraction process, and to maintain the overall stability of the device.

[0032] like Figure 1 As shown, each horizontal bar 4 has a negative pressure suction cup 42 fixedly installed at both ends below. The negative pressure suction cup 42 is made of polyurethane material. The corresponding contact position of the cover plate with the suction cup 42 is polished to ensure a firm grip. An air suction valve 43 and an air release valve 44 are also fixedly installed above the horizontal bar 4. Both the air suction valve 43 and the air release valve 44 are connected to the negative pressure suction cup 42 through pipes (not shown in the figure). The pipes are fixedly installed inside the horizontal bar 4. In this embodiment, the air suction valve 43 is a one-way valve, which is used to draw the suction cup 42 to negative pressure through an external manual or electric vacuum generator, so as to grip the cover plate tightly during lifting. The air release valve 44 is a ball valve. The ball valve is normally closed to strictly ensure its airtightness. The ball valve is used to open when the cover plate is lowered to restore the suction cup 42 to normal pressure.

[0033] The workflow of this solution is as follows: Connect the power supply. During the lifting of the cover plate, use an external manual or electric vacuum generator to draw the suction cup 42 to negative pressure through a one-way valve, firmly gripping the four corners of the cover plate. Then, by jogging the remote control, the electric hoist drives the scissor-type telescopic arm 3 via rope 21 to lift the cover plate. After the cover plate is lifted, move the gantry frame 1 and loosen rope 21. By opening the sealed ball valve, the suction cup 42 is restored to normal pressure, allowing the cover plate to rotate to the ground. Maintenance personnel can then enter the pool for repairs or lift out the equipment requiring maintenance.

[0034] Example 2

[0035] Its main difference from Example 1 is:

[0036] A pair of electromagnetic chucks are fixedly installed at both ends of the lower part of the crossbar. The electromagnetic chucks are connected to an external power source and are electrically connected to an electromagnetic switch. The electromagnetic switch controls the electromagnetic chucks to pick up or lower the cover plate.

[0037] This solution eliminates the need for suction and release valves. The electromagnetic chuck can utilize the same power source as an electric hoist, and the cover plate can be picked up and lowered simply by controlling the electromagnetic switch.

[0038] The above-described preferred embodiments of the present invention are provided for guidance, but it will be apparent to those skilled in the art that such embodiments are provided merely by way of example. Many modifications, alterations, and alternatives will arise in the mind and spirit of the present invention without departing from its intent. It should be understood that various alternatives to the embodiments of the present invention described herein may be employed in the practice of the present invention. The appended claims are intended to define the scope of protection of the present invention and therefore cover the modular compositions, equivalents, or alternatives within the scope of these claims.

Claims

1. A cover lifting device suitable for sewage treatment plants, comprising: a portal frame (1) comprising support frames (11) on both sides and a connecting platform (12) for connecting the top of the support frames (11); characterized in that a pair of scissor arms (3) is hinged below the connecting platform (12), the bottom of the scissor arms (3) is hinged with a crossbar (4), a suction cup (42) is fixedly installed below the crossbar (4), the suction cup (42) is used to suck the cover, and a driving device (2) is fixedly installed above the connecting platform (12) corresponding to the scissor arms (3), the driving device (2) is used to drive the scissor arms (3) to contract, thereby lifting the cover.

2. A cover plate lifting device suitable for use in a sewage treatment plant according to claim 1 characterised in that: An ear plate one is fixedly installed below the connecting platform (12), an ear plate two (41) is fixedly installed on the top surface of the crossbar (4), the top of the scissor arms (3) is hinged with the connecting platform (12) through the ear plate one, and the bottom of the scissor arms (3) is hinged with the crossbar (4) through the ear plate two (41).

3. A cover lifting device suitable for use in a sewage treatment plant according to claim 2, characterised in that: The scissor arms (3) are of double-layer structure, and are hinged using hinge rods corresponding to the hinge points, wherein the center hinge rod (31) of the scissor arms (3) is provided with an avoiding hole (32), the connecting platform (12) and the ear plate one are provided with a through hole (14) corresponding to the avoiding hole (32), and the through hole (14) and the avoiding hole (32) are vertically and linearly communicated.

4. A cover lifting device suitable for use in a sewage treatment plant according to claim 3, characterised in that: The driving device (2) is an electric hoist, the electric hoist passes through the through hole (14) and the avoiding hole (32) in sequence through a rope (21), and is finally fixedly connected with the ear plate two (41).

5. A cover plate lifting device suitable for use in a sewage treatment plant according to claim 3, characterised in that: A linear bearing (15) is fixedly installed in the through hole (14).

6. A cover plate lifting device suitable for use in a sewage treatment plant according to claim 1 characterised in that: The suction cup (42) is a negative pressure suction cup, an air suction valve (43) and an air release valve (44) are fixedly installed on the top of the crossbar (4), and the air suction valve (43) and the air release valve (44) are communicated with the negative pressure suction cup through pipelines.

7. A cover plate lifting device suitable for use in a sewage treatment plant according to claim 1 characterised in that: The suction cup (42) is an electromagnetic suction cup.

8. A cover plate lifting device suitable for use in a sewage treatment plant according to claim 1 characterised in that: Universal wheels (13) facilitating movement are installed on both sides of the bottom of the support frames (11).

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