Special crane car for replacing scraper of submerged chain conveyor

Abstract

The utility model relates to the technical field of crane cars, in particular to a crane car special for replacing a scraper of a submerged chain conveyor, which comprises a base and a power mechanism, moving wheels are arranged at the bottom of the base, a door-shaped frame is fixedly connected to the upper portion of the base, and a fork arm mechanism is movably connected in the door-shaped frame (3). The fork arm mechanism comprises a back plate, and the right side of the back plate is fixedly connected with an upper fork arm and a lower fork arm located below the upper fork arm. The rightward extending length of the lower fork arm is greater than that of the upper fork arm; through the arrangement of the upper fork arm and the lower fork arm, the upper fork arm can be used for storing and assisting in installing a new scraper blade, the lower fork arm can be used for assisting in detaching and storing an old scraper blade, and the old scraper blade does not need to be carried to the ground, and then the new scraper blade does not need to be lifted up to a specified height to be installed; operation is simple, and efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, specifically a crane for replacing the scraper blades of a slag remover. Background Technology

[0002] The boiler ash removal system uses a scraper ash remover for ash removal. As the system operates for longer periods, the scraper blades of the ash remover experience varying degrees of wear, leading to an increased frequency of scraper replacement. Replacing the scraper requires removing the old scraper from the chain and then installing the new scraper, all of which must be done at a height of approximately 1.3 meters inside the scraper ash remover. The scraper blades are quite heavy, requiring the use of a hydraulic crane for both removal and installation. However, the hydraulic crane only has one fork arm, necessitating the use of the fork arm to lift the old scraper to the ground and then lift the new scraper to the designated height for installation each time. This process is cumbersome and inefficient. Utility Model Content

[0003] The main purpose of this utility model is to provide a special crane for replacing the scraper blades of a slag removal machine, so as to solve the problem that when using a hydraulic crane to disassemble and install scraper blades in the prior art, it is necessary to use a fork arm to carry the old scraper blade to the ground and then lift the new scraper blade to a specified height for installation, which is cumbersome and inefficient.

[0004] To achieve the above objectives, this utility model provides a special crane for replacing the scraper blades of a slag remover, including a base and a power mechanism. The bottom of the base is provided with movable wheels, and the upper part of the base is fixedly connected to a portal frame. A fork arm mechanism is movably connected inside the portal frame (3). The fork arm mechanism includes a back plate, and the right side of the back plate is fixedly connected to an upper fork arm and a lower fork arm located below the upper fork arm. The length of the lower fork arm extending to the right is greater than that of the upper fork arm.

[0005] Furthermore, a sliding groove is provided inside the portal frame, and a sliding wheel is rotatably connected to the back plate via a bracket, with the sliding wheel slidably connected inside the sliding groove.

[0006] Furthermore, the power mechanism includes a sprocket, a transmission chain, and a hydraulic cylinder. The hydraulic cylinder is located on the left side of the portal frame. The bottom of the hydraulic cylinder is fixedly connected to the base, and the top of the hydraulic cylinder is rotatably connected to the sprocket. A fixing block is fixedly connected to the left side of the portal frame. One end of the transmission chain is fixedly connected to a fork arm mechanism, and the other end is fixedly connected to the fixing block. The sprocket and the transmission chain are connected in a transmission connection.

[0007] Furthermore, the hydraulic cylinder is connected to a lifting rod for controlling the extension of the hydraulic cylinder and a pressure relief valve for controlling the retraction of the hydraulic cylinder.

[0008] Furthermore, a handle is fixedly connected to the left side of the portal frame.

[0009] This invention, by setting up an upper fork arm and a lower fork arm, allows the upper fork arm to store and assist in the installation of new scrapers, while the lower fork arm assists in the disassembly and storage of old scrapers. It eliminates the need to move the old scrapers to the ground and then lift the new scrapers to a designated height for installation; the operation is simple and highly efficient. Attached Figure Description

[0010] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0011] Figure 1 This is a schematic diagram of the structure of the special crane for replacing the scraper blade of the slag remover in the embodiment;

[0012] Figure 2 This is a schematic diagram of the fork arm mechanism in use in the embodiment. Figure 1 ;

[0013] Figure 3 This is a schematic diagram of the fork arm mechanism in use in the embodiment. Figure 2 .

[0014] In the diagram: 1. Base; 2. Casters; 3. Gate frame; 4. Power mechanism; 401. Sprocket; 402. Chain; 403. Hydraulic cylinder; 404. Lifting lever; 405. Pressure relief valve; 5. Fork arm mechanism; 501. Back plate; 502. Upper fork arm; 503. Lower fork arm; 504. Sliding wheel; 6. Handle; 7. Scraper chain; 8. Scraper. Detailed Implementation

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] like Figure 1 As shown in the embodiment of this utility model, a special crane for replacing the scraper blade of a slag remover is provided, including a base 1 and a power mechanism 4. The bottom of the base 1 is provided with a movable wheel 2, and a portal frame 3 is fixedly connected to the upper part of the base 1. A fork arm mechanism 5 is movably connected inside the portal frame 3. The fork arm mechanism 5 includes a back plate 501, and an upper fork arm 502 and a lower fork arm 503 located below the upper fork arm 502 are fixedly connected to the right side of the back plate 501. The length of the lower fork arm 503 extending to the right is greater than that of the upper fork arm 502.

[0017] The portal frame 3 is provided with a sliding groove, and the back plate 501 is rotatably connected to the sliding wheel 504 via a bracket. The sliding wheel 504 is slidably connected in the sliding groove.

[0018] The power mechanism 4 includes a sprocket 401, a transmission chain 402, and a hydraulic cylinder 403. The hydraulic cylinder 403 is located on the left side of the portal frame 3. The bottom of the hydraulic cylinder 403 is fixedly connected to the base 1, and the top of the hydraulic cylinder 403 is rotatably connected to the sprocket 401. A fixing block 301 is fixedly connected to the left side of the portal frame 3. One end of the transmission chain 402 is fixedly connected to the fork arm mechanism 5, and the other end is fixedly connected to the fixing block 301. The sprocket 401 and the transmission chain 402 are connected in a transmission connection.

[0019] A handle 6 is fixedly connected to the left side of the door frame 3.

[0020] In some embodiments, the hydraulic cylinder 403 is connected to a lifting rod 404 for controlling the extension of the hydraulic cylinder 403 and a pressure relief valve 405 for controlling the retraction of the hydraulic cylinder 403.

[0021] like Figure 2 and Figure 3 As shown, multiple scrapers 8 are installed on the scraper chain 7. When replacing scrapers 8, first drive the special crane for replacing scrapers of the slag remover to the scraper storage location and place the new scraper 8 on the upper fork arm 502. Next, drive the special crane for replacing scrapers of the slag remover to the rear of the slag remover, use the lower fork arm 503 to lift the old scraper 8 to be replaced, remove the old scraper 8 and push it to the left, storing it on the lower fork arm 503, and then remove the next scraper 8. Then, after all the scraper 8s have been removed, move the new scraper 8 to the installation position, and install the new scraper 8 on the chain 7 under the support of the upper fork arm 502. Finally, use the special crane for replacing scrapers of the slag remover to transport the removed old scrapers to the scraper storage location.

[0022] This embodiment, by setting up an upper fork arm and a lower fork arm, allows the upper fork arm to store and assist in the installation of new scrapers, while the lower fork arm assists in the disassembly and storage of old scrapers. It eliminates the need to move the old scrapers to the ground and then lift the new scrapers to a designated height for installation; the operation is simple and highly efficient.

[0023] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A special crane for replacing the scraper of a slag conveyor, comprising a base (1), a power mechanism (4), the bottom of the base (1) being provided with moving wheels (2), the upper part of the base (1) being fixedly connected with a door-shaped frame (3), and a fork arm mechanism (5) being movably connected in the door-shaped frame (3); characterized in that, The fork arm mechanism (5) comprises a back plate (501), the right side of the back plate (501) is fixedly connected with an upper fork arm (502) and a lower fork arm (503) below the upper fork arm (502); the length of the lower fork arm (503) extending to the right side is greater than that of the upper fork arm (502).

2. The special crane for changing the scraper of a slag conveyor as claimed in claim 1, characterized in that, The door type frame (3) is provided with a sliding groove, the back plate (501) is rotatably connected with a sliding wheel (504) through a support, and the sliding wheel (504) is slidably connected in the sliding groove.

3. The special crane for changing the scraper of a slag conveyor as claimed in claim 2, characterized in that, The power mechanism (4) comprises a chain wheel (401), a transmission chain (402) and a hydraulic cylinder (403), the hydraulic cylinder (403) is located at the left side of the door type frame (3), the bottom of the hydraulic cylinder (403) is fixedly connected with the base (1), and the top of the hydraulic cylinder (403) is rotatably connected with the chain wheel (401); the left side of the door type frame (3) is fixedly connected with a fixed block (301), one end of the transmission chain (402) is fixedly connected with the fork arm mechanism (5), and the other end is fixedly connected with the fixed block (301); the chain wheel (401) is in transmission connection with the transmission chain (402).

4. The special crane for changing the scraper of a slag conveyor as claimed in claim 3, characterized in that, The hydraulic cylinder (403) is connected with a lifting pressure rod (404) for controlling the extension of the hydraulic cylinder (403) and a pressure relief valve (405) for controlling the shortening of the hydraulic cylinder (403).

5. The special crane for changing the scraper of a slag conveyor as claimed in claim 1, characterized in that, The left side of the door type frame (3) is fixedly connected with a handle (6).

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