Main and auxiliary scraper arm linkage device on large-span gate-type scraper reclaimer

Abstract

The invention relates to a main and auxiliary scraper arm linkage device on a large-span gate-type scraper reclaimer, and relates to the technical field of reclaimers. The device comprises a portal frame, a main scraping plate arm frame and an auxiliary scraping plate arm frame are arranged below the portal frame, connecting pieces used for connecting the main scraping plate arm frame and the auxiliary scraping plate arm frame are arranged at the ends, close to each other, of the main scraping plate arm frame and the auxiliary scraping plate arm frame, and a lifting mechanism is arranged on the portal frame and connected with the main scraping plate arm frame. And the main scraper arm frame and the auxiliary scraper arm frame are driven to ascend. The lifting mechanism has the advantages that the main scraper boom and the auxiliary scraper boom can be lifted and lowered at the same time only through one lifting mechanism, and the overall coordination, positioning accuracy and intelligent degree are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of reclaimer, in particular to a main and auxiliary scraper arm linkage device of a large-span gantry scraper reclaimer. BACKGROUND

[0002] Large high-corrosion sulfur mines and chemical fertilizer yards need closed yards according to the inherent properties of the materials. The closed yards are increasingly large, and the gantry scraper reclaimers in the closed yards are increasingly large in track gauge, height and material taking capacity. The large-span gantry scraper reclaimer (provided with a main scraper arm frame and an auxiliary scraper arm frame) is very popular in the market. However, the lifting devices of the main and auxiliary scraper arm frames of the general current models are lifted by two sets of lifting mechanisms respectively, which are poor in coordination, high in manufacturing and maintenance cost of the two sets of steel wire rope winch lifting mechanisms, and high in frequency of maintenance and replacement of parts, thereby affecting production efficiency. The two sets of steel wire rope winch lifting mechanisms are poor in accurate positioning, and low in intelligent degree, and thus need to be improved. SUMMARY

[0003] In order to realize lifting and lowering of the main and auxiliary scraper arm frames by one set of lifting mechanism, improve the overall coordination, accurate positioning and intelligent degree, the application provides a main and auxiliary scraper arm linkage device of a large-span gantry scraper reclaimer.

[0004] The main and auxiliary scraper arm linkage device of the large-span gantry scraper reclaimer provided by the application adopts the following technical scheme: The main and auxiliary scraper arm linkage device of the large-span gantry scraper reclaimer comprises a portal frame, a main scraper arm frame and an auxiliary scraper arm frame arranged below the portal frame, a connecting piece for connecting the main scraper arm frame and the auxiliary scraper arm frame arranged at one end of the main scraper arm frame and the auxiliary scraper arm frame close to each other, and a lifting mechanism arranged on the portal frame and connected with the main scraper arm frame for driving the main scraper arm frame and the auxiliary scraper arm frame to ascend.

[0005] By adopting the above technical scheme, the main scraper arm frame and the portal frame only need to adopt one set of lifting mechanism, and one set of lifting mechanism can simultaneously complete lifting and lowering of the main scraper arm frame and the auxiliary scraper arm frame under the driving of the connecting piece. The total power required is less than the sum of the total power of two sets of lifting mechanisms, energy consumption can be effectively saved, and the overall coordination, accurate positioning and intelligent degree can be improved under the action of the connecting piece.

[0006] Preferably, a rope pulley balancer is arranged between the lifting mechanism and the main scraper arm frame.

[0007] By adopting the above technical scheme, the rope pulley balancer can optimize the distribution of mechanical structural force, thereby reducing the overall operation difficulty, improving safety and efficiency.

[0008] Preferably, the connecting piece comprises a triangular connecting frame and two connecting hinge points, and the two connecting hinge points are respectively arranged at two corners of the bottom of the triangular connecting frame, one of the two connecting hinge points is connected with the main scraper arm frame, and the other connecting hinge point is connected with the auxiliary scraper arm frame.

[0009] By adopting the above technical scheme, the triangular connecting frame is arranged, so that the auxiliary scraper arm frame can move together with the main scraper arm frame when the main scraper arm frame is lifted, and the auxiliary scraper arm frame can be in close contact with the material to scrape the material more comprehensively.

[0010] Preferably, a hydraulic oil cylinder is arranged between the main scraper arm frame and the triangular connecting frame, the base of the hydraulic oil cylinder is hingedly connected with the top end of the main scraper arm frame, and the piston rod of the hydraulic oil cylinder is hingedly connected with the top corner of the triangular connecting frame.

[0011] By adopting the above technical scheme, the hydraulic oil cylinder can make the auxiliary scraper arm frame closely contact with the material to improve the material taking efficiency, and can make the material scraped from the auxiliary scraper arm frame be smoothly transferred to the main scraper arm frame, further improve the material taking efficiency, and achieve the function of automatic positioning control.

[0012] Preferably, a supporting wheel device is arranged at the tail of the auxiliary scraper arm frame, a supporting wheel track is arranged on the portal, and the supporting wheel device is slidingly connected in the supporting wheel track.

[0013] By adopting the above technical scheme, the supporting wheel device and the supporting wheel track solve the problem that the auxiliary scraper arm frame can only be amplitude changed at one hinge point in the prior art. In this way, the length of the auxiliary scraper arm frame itself can be shortened, but the working space can be greatly increased, and the main scraper arm frame can be fed in all directions to meet the requirement of taking material at any position under the natural repose angle of the material.

[0014] Preferably, the end of the main scraper arm frame away from the auxiliary scraper arm frame is hingedly connected with the portal.

[0015] By adopting the above technical scheme, the connection stability between the main scraper arm frame and the portal can be effectively improved.

[0016] In summary, the present application has at least one of the following beneficial technical effects: 1. The main scraper arm frame and the portal only need to adopt one set of lifting mechanism, and under the driving of the connecting piece, one set of lifting mechanism can simultaneously complete the lifting of the main scraper arm frame and the auxiliary scraper arm frame, the total power required is less than the sum of the total power of two sets of lifting mechanisms, the energy consumption can be effectively saved, and under the action of the connecting piece, the coordination, positioning accuracy and intelligent degree of the whole machine can be improved; 2. The triangular connecting frame is arranged, so that the auxiliary scraper arm frame can move together with the main scraper arm frame when the main scraper arm frame is lifted, and the auxiliary scraper arm frame can be in close contact with the material to scrape the material more comprehensively. 3. The hydraulic cylinder is arranged to enable the auxiliary scraper arm frame to be closely engaged with the material, improve the material taking efficiency, and enable the material scraped from the auxiliary scraper arm frame to be more smoothly transferred to the main scraper arm frame, further improve the material taking efficiency and achieve the function of automatic positioning control; 4. The support wheel device and the support wheel track are arranged to solve the problem that the auxiliary scraper arm frame in the prior art can only be amplitude changed at one hinge point, so that the structure length of the auxiliary scraper arm frame can be shortened, but the operation space is greatly increased, and the main scraper arm frame is fully fed in all directions to meet the material taking at any position under the natural repose angle of the material. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of a main and auxiliary scraper arm linkage device on a large-span portal scraper reclaimer according to an embodiment of the present application.

[0018] Figure 2 is a structural schematic view of a connecting piece according to an embodiment of the present application.

[0019] Figure 3 is a structural schematic view of a minimum stroke state of a hydraulic cylinder according to an embodiment of the present application.

[0020] Figure 4 is a structural schematic view of a maximum stroke state of a hydraulic cylinder according to an embodiment of the present application.

[0021] Figure 5 is a schematic view of the state before and after the movement of a main and auxiliary scraper arm frame according to an embodiment of the present application.

[0022] Reference signs: 1, portal frame; 2, main scraper arm frame; 3, auxiliary scraper arm frame; 4, connecting piece; 41, triangular connecting frame; 42, connecting hinge point; 5, hoisting mechanism; 6, rope pulley balancer; 7, hydraulic cylinder; 8, support wheel device; 9, support wheel track. DETAILED DESCRIPTION

[0023] The following will be described in detail below with reference to the accompanying drawings Figures 1-5 The present application will be further described in detail.

[0024] The embodiment of the present application discloses a main and auxiliary scraper arm linkage device on a large-span portal scraper reclaimer. Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5, including portal frame 1, main scraper arm frame 2 and auxiliary scraper arm frame 3 are arranged below portal frame 1, connecting piece 4 is arranged between the ends of main scraper arm frame 2 and auxiliary scraper arm frame 3 close to each other, the end of main scraper arm frame 2 away from auxiliary scraper arm frame 3 is hinged to portal frame 1, the end of auxiliary scraper arm frame 3 away from main scraper arm frame 2 is provided with support wheel device 8, support wheel track 9 is arranged on portal frame 1, support wheel device 8 is slidingly connected in support wheel track 9, the support wheel device 8 and the support wheel track 9 solve the disadvantage that the auxiliary scraper arm frame 3 can only be amplitude at one hinge point in the prior art, so that the length of the auxiliary scraper arm frame 3 itself can be shortened, but the working space will be greatly increased, and the main scraper arm frame 2 is given full range of feeding, and any position of the material under the natural rest angle is met.

[0025] With reference to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , the lifting mechanism 5 is arranged on the portal frame 1, the lifting mechanism 5 is connected with the main scraper arm frame 2, the rope pulley balancer 6 is arranged at the connection between the lifting mechanism 5 and the main scraper arm frame 2, so as to optimize the force distribution and reduce the overall operation difficulty; the connecting piece 4 includes a triangular connecting frame 41 and two connecting hinge points 42, the two connecting hinge points 42 are arranged at the two corners of the bottom end of the triangular connecting frame 41 respectively, one corner of the triangular connecting frame 41 is hinged to the main scraper arm frame 2 through the connecting hinge point 42, and the other corner is hinged to the auxiliary scraper arm frame 3 through the connecting hinge point 42, so that the auxiliary scraper arm frame 3 is driven to move together when the main scraper arm frame 2 moves; the triangular connecting frame 41 can make the auxiliary scraper arm frame 3 move together with the main scraper arm frame 2, and can also link the auxiliary scraper arm frame 3 and the material in close contact, so that the material is scraped more comprehensively.

[0026] With reference to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 , the hydraulic oil cylinder 7 is arranged between the main scraper arm frame 2 and the triangular connecting frame 41, the base of the hydraulic oil cylinder 7 is hinged to the top end of the main scraper arm frame 2, and the piston rod of the hydraulic oil cylinder 7 is hinged to the top corner of the triangular connecting frame 41; the hydraulic oil cylinder 7 can make the auxiliary scraper arm frame 3 closely contact with the material, improve the material taking efficiency, on the other hand, the material scraped from the auxiliary scraper arm frame 3 can be more smoothly transferred to the main scraper arm frame 2, further improve the material taking efficiency and achieve the function of automatic positioning control.

[0027] The implementation principle of the linkage device of the main and auxiliary scraper arms of the large-span portal scraper reclaimer according to the embodiment of the application is as follows: one set of lifting mechanism 5 is adopted to enable the main scraper arm frame 2 and the auxiliary scraper arm frame 3 to simultaneously rise and fall, and under the driving of the connecting piece 4, one set of lifting mechanism 5 can simultaneously complete the lifting of the main scraper arm frame 2 and the auxiliary scraper arm frame 3, and the total power required is less than the sum of the total power of two sets of lifting mechanism 5, thereby effectively saving energy consumption; a set of hydraulic oil cylinder 7 positioning device is arranged between the main scraper arm frames 2 to adjust the angle of the auxiliary scraper arm frame 3, to satisfy the optimal contact of the scraper arm frame at all positions with the material, to improve the material taking efficiency, to ensure the cleanliness of the material, and to improve the smoothness of the material transition between the main scraper arm frame 2 and the auxiliary scraper arm frame 3; the hydraulic oil cylinder 7 device is reliable in sealing, strong in corrosion resistance, and accurate in positioning, thereby providing reliability for the intelligence and automation; the hinge point connection in the prior art is changed into a support wheel sliding connection at the tail of the auxiliary scraper arm frame 3, thereby shortening the structural length of the auxiliary scraper arm frame 3, reducing the manufacturing cost, and improving the three-dimensional operation space of the auxiliary scraper.

[0028] The above are the preferred embodiments of the application, and do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A linkage device for the main and auxiliary scraper arms on a large-span gantry scraper reclaimer, characterized by: It includes a gantry, a main scraper arm and an auxiliary scraper arm are arranged below the gantry, a connecting piece for connecting the main scraper arm and the auxiliary scraper arm is provided at one end where the main scraper arm and the auxiliary scraper arm are close to each other, and a lifting mechanism is provided on the gantry, which is connected to the main scraper arm to drive the main scraper arm and the auxiliary scraper arm to rise.

2. The main and auxiliary scraper arm linkage device of a large-span gantry scraper reclaimer according to claim 1 is characterized in that: A rope pulley balancer is provided between the lifting mechanism and the main scraper arm.

3. The main and auxiliary scraper arm linkage device of a large-span gantry scraper reclaimer according to claim 1 is characterized in that: The connecting member includes a triangular connecting frame and two connecting hinges, which are respectively arranged at two corners of the bottom of the triangular connecting frame. One of the connecting hinges is connected to the main scraper arm, and the other connecting hinge is connected to the auxiliary scraper arm.

4. The main and auxiliary scraper arm linkage device of a large-span gantry scraper reclaimer according to claim 3 is characterized in that: A hydraulic oil cylinder is provided between the main scraper arm and the triangular connecting frame. The base of the hydraulic oil cylinder is hinged to the top of the main scraper arm, and the piston rod of the hydraulic oil cylinder is hinged to the top angle of the triangular connecting frame.

5. The main and auxiliary scraper arm linkage device on a large-span gantry scraper reclaimer according to claim 1, characterized in that: The tail of the auxiliary scraper arm is provided with a supporting wheel device, the door frame is provided with a supporting wheel track, and the supporting wheel device is slidably connected in the supporting wheel track.

6. The main and auxiliary scraper arm linkage device of a large-span gantry scraper reclaimer according to claim 1, characterized in that: One end of the main scraper arm away from the auxiliary scraper arm is hinged to the door frame.

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